/* ============================================
   有限会社デジタルフュージョン - メインスタイルシート
   ============================================ */

/* --- CSS変数 --- */
:root {
  --color-primary: #1A1A1A;
  --color-primary-dark: #111111;
  --color-blue: #6B9FD6;
  --color-blue-dark: #5080B8;
  --color-blue-light: #D6E4F0;
  --color-blue-pale: #EBF1F8;
  --color-accent: #6B9FD6;
  --color-accent-hover: #5080B8;
  --color-text: #1A1A1A;
  --color-text-light: #555555;
  --color-text-white: #FFFFFF;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F8FC;
  --color-bg-dark: #1A1A1A;
  --color-border: #E2E8F0;
  --font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --max-width: 1100px;
  --header-height: 72px;
  --transition: 0.3s ease;
}

/* --- リセット --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-accent-hover);
}

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

ul {
  list-style: none;
}

/* --- ユーティリティ --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-white);
}

.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.section--dark .section__title {
  color: var(--color-text-white);
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 48px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section--dark .section__subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.section__action {
  text-align: center;
  margin-top: 40px;
}

.text-link {
  color: var(--color-accent);
  font-weight: 500;
  font-size: 0.9rem;
}

.text-link:hover {
  color: var(--color-accent-hover);
}

/* --- ヘッダー --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.header__logo-img {
  height: 28px;
  width: auto;
}

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

.header__nav a {
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  letter-spacing: 0.02em;
}

.header__nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.header__nav a:hover::after,
.header__nav a.active::after {
  width: 100%;
}

.header__nav a:hover {
  color: var(--color-accent);
}

/* 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: 8px;
  z-index: 1001;
}

.hamburger__line {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

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

/* --- ヒーロー --- */
.hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, #1A1A1A 0%, #2A3A50 40%, var(--color-blue) 100%);
  color: var(--color-text-white);
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero-bg.png') center/cover no-repeat;
  opacity: 0.3;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__logo {
  max-width: 340px;
  margin: 0 auto 36px;
  border-radius: 12px;
}

.hero__catch {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero__lead {
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: 40px;
  line-height: 1.9;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__cta {
  display: inline-block;
  background: var(--color-text-white);
  color: var(--color-primary);
  padding: 14px 36px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.02em;
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: var(--color-primary);
}

.hero__cta--outline {
  background: transparent;
  color: var(--color-text-white);
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero__cta--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-white);
  border-color: var(--color-text-white);
}

/* --- 強みセクション --- */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.strength-item {
  text-align: center;
  padding: 32px 24px;
}

.strength-item__number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.strength-item h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.strength-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- サービスカード（画像付き） --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  justify-items: center;
}

.services-grid .service-card:last-child:nth-child(3n+1) {
  grid-column: 2;
}

.services-grid .service-card {
  width: 100%;
}

.service-card {
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  color: inherit;
}

.service-card__image {
  height: 200px;
  overflow: hidden;
}

.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.service-card:hover .service-card__image img {
  transform: scale(1.05);
}

.service-card__body {
  padding: 24px;
}

.service-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.service-card__text {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- 実績ハイライト（トップページ） --- */
.works-highlight {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.works-highlight__item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.works-highlight__item:nth-child(even) {
  direction: rtl;
}

.works-highlight__item:nth-child(even) > * {
  direction: ltr;
}

.works-highlight__image {
  border-radius: 8px;
  overflow: hidden;
}

.works-highlight__image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.works-highlight__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-blue-pale);
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 12px;
}

.works-highlight__content h3 {
  font-size: 1.3rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.works-highlight__content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

/* --- 会社紹介セクション --- */
.about-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-summary__image {
  border-radius: 8px;
  overflow: hidden;
}

.about-summary__image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.about-summary__text h3 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.about-summary__text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about-summary__info {
  background: var(--color-bg);
  border-radius: 8px;
  padding: 24px;
  margin-top: 8px;
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}

.about-summary__info dl {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 10px 16px;
}

.about-summary__info dt {
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-primary);
}

.about-summary__info dd {
  font-size: 0.85rem;
  color: var(--color-text);
}

/* --- CTAセクション --- */
.cta-section {
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: 1.5rem;
  color: var(--color-text-white);
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}

.btn {
  display: inline-block;
  padding: 14px 40px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-white);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(107, 159, 214, 0.3);
  color: var(--color-text-white);
}

.btn--white {
  background: var(--color-text-white);
  color: var(--color-primary);
}

.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  color: var(--color-primary);
}

/* --- ページヒーロー --- */
.page-hero {
  margin-top: var(--header-height);
  background: var(--color-primary);
  color: var(--color-text-white);
  padding: 60px 0;
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-hero p {
  opacity: 0.8;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* --- リード文 --- */
.works-lead {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.works-lead p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 2;
}

/* --- 事業詳細 --- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0;
}

.service-detail--reverse {
  direction: rtl;
}

.service-detail--reverse > * {
  direction: ltr;
}

.service-detail__content h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.service-detail__content p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.8;
}

.service-detail__list {
  list-style: none;
}

.service-detail__list li {
  padding: 6px 0;
  padding-left: 24px;
  position: relative;
  color: var(--color-text);
  font-size: 0.95rem;
}

.service-detail__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.service-detail__visual {
  border-radius: 12px;
  overflow: hidden;
}

.service-detail__visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* --- 制作フロー --- */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.flow-step {
  text-align: center;
  padding: 32px 16px;
  position: relative;
}

.flow-step__number {
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.flow-step h3 {
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.flow-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- 実績ページ --- */
.work-item {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 48px;
  align-items: start;
}

.work-item--reverse {
  grid-template-columns: 1fr 400px;
}

.work-item--reverse .work-item__image {
  order: 2;
}

.work-item__image {
  border-radius: 8px;
  overflow: hidden;
}

.work-item__image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.work-item__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-blue-pale);
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 12px;
}

.work-item__content h2 {
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.work-item__subtitle {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-weight: 500;
}

.work-item__content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.work-item__details {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.work-item__detail {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  line-height: 1.6;
}

.work-item__detail strong {
  flex-shrink: 0;
  width: 90px;
  color: var(--color-primary);
  font-weight: 700;
}

.work-item__detail span {
  color: var(--color-text-light);
}

.work-item__testimonial {
  margin-top: 20px;
  padding: 20px 24px;
  background: var(--color-blue-pale);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
}

.work-item__testimonial blockquote {
  font-size: 0.9rem;
  color: var(--color-text);
  font-style: italic;
  line-height: 1.7;
}

.work-item__testimonial cite {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 8px;
  font-style: normal;
}

/* --- パートナー --- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.partner-card {
  background: var(--color-bg);
  border-radius: 8px;
  padding: 32px;
  border: 1px solid var(--color-border);
}

.partner-card h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.partner-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- 代表挨拶 --- */
.message-block {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 48px;
  align-items: center;
}

.message-block__image {
  border-radius: 8px;
  overflow: hidden;
}

.message-block__image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.message-block__text p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.9;
}

.message-block__sign {
  font-weight: 700;
  color: var(--color-primary) !important;
  font-size: 1rem !important;
  margin-top: 24px !important;
}

/* --- 沿革 --- */
.history-list {
  max-width: 700px;
  margin: 0 auto;
}

.history-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.history-item:last-child {
  border-bottom: none;
}

.history-item__year {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.95rem;
}

.history-item__text {
  font-size: 0.95rem;
  color: var(--color-text);
}

/* --- 会社概要ページ --- */
.company-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.company-table th,
.company-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.company-table th {
  width: 160px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-bg-alt);
  white-space: nowrap;
}

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

.access-block {
  margin-top: 16px;
}

.access-block__map {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 24px;
}

.access-block__map iframe {
  display: block;
  width: 100%;
  height: 400px;
}

.access-block__info {
  padding: 28px;
  background: var(--color-bg-alt);
  border-radius: 8px;
}

.access-block__info p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* --- お問い合わせページ --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-box {
  background: var(--color-bg-alt);
  border-radius: 8px;
  padding: 36px;
}

.contact-info-box h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.contact-info-item__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info-item__label {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 2px;
}

.contact-info-item__value {
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 500;
}

.contact-info-item__value a {
  color: var(--color-text);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

.form-group label .required {
  color: #D32F2F;
  font-size: 0.75rem;
  margin-left: 4px;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--color-bg);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(107, 159, 214, 0.15);
}

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

.form-submit {
  margin-top: 8px;
}

/* --- 送信完了ページ --- */
.thanks-box {
  text-align: center;
  padding: 60px 24px;
  max-width: 600px;
  margin: 0 auto;
}

.thanks-box__icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.thanks-box h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.thanks-box p {
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

/* --- フッター --- */
.footer {
  background: var(--color-primary);
  color: var(--color-text-white);
  padding: 48px 0 24px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__company h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.footer__company p {
  font-size: 0.85rem;
  opacity: 0.7;
  line-height: 1.7;
}

.footer__nav h4 {
  font-size: 0.85rem;
  margin-bottom: 12px;
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer__nav ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.footer__nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: var(--color-text-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.5;
}

/* --- 私たちの仕事のやり方（philosophyブロック） --- */
.philosophy-block {
  max-width: 800px;
  margin: 0 auto;
}

.philosophy-block p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: 20px;
}

.philosophy-block p strong {
  color: var(--color-primary);
}

.philosophy-block__list {
  background: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 24px 28px;
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
}

.philosophy-block__list p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 2.2;
  margin-bottom: 0;
}

/* --- チャネルテーブル（実績ページ） --- */
.channel-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 0.85rem;
}

.channel-table th,
.channel-table td {
  padding: 8px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.channel-table thead th {
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-blue-pale);
  font-size: 0.8rem;
}

.channel-table tbody td {
  color: var(--color-text);
}

.channel-table tbody td:first-child {
  font-weight: 500;
}

/* --- 実績ページ ハイライトボックス --- */
.work-item__highlight {
  background: var(--color-blue-pale);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.work-item__highlight h4 {
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.work-item__highlight ul {
  list-style: disc;
  padding-left: 20px;
}

.work-item__highlight li {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding: 2px 0;
}

/* --- 実績ページ リストスタイル --- */
.work-item__list {
  list-style: none;
  margin-bottom: 16px;
}

.work-item__list li {
  padding: 4px 0 4px 20px;
  position: relative;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.work-item__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* --- アニメーション --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- レスポンシブ --- */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .hamburger {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 0;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    transition: right var(--transition);
  }

  .header__nav.open {
    right: 0;
  }

  .header__nav a {
    padding: 16px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
  }

  .hero {
    padding: 70px 0 60px;
  }

  .hero__logo {
    max-width: 240px;
    margin-bottom: 24px;
  }

  .hero__catch {
    font-size: 1.6rem;
  }

  .hero__lead {
    font-size: 0.9rem;
  }

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

  .strengths-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .works-highlight__item {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .works-highlight__item:nth-child(even) {
    direction: ltr;
  }

  .works-highlight__image img {
    height: 200px;
  }

  .about-summary {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-summary__image img {
    height: 240px;
  }

  .service-detail {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0;
  }

  .service-detail--reverse {
    direction: ltr;
  }

  .service-detail__visual {
    order: -1;
  }

  .service-detail__visual img {
    height: 220px;
  }

  .flow-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .work-item,
  .work-item--reverse {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .work-item--reverse .work-item__image {
    order: 0;
  }

  .work-item__image img {
    height: 200px;
  }

  .work-item__detail {
    flex-direction: column;
    gap: 4px;
  }

  .work-item__detail strong {
    width: auto;
  }

  .partners-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .message-block__image img {
    height: 220px;
  }

  .history-item {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 16px 0;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }

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

  .company-table td {
    padding-top: 4px;
  }

  .philosophy-block__list {
    padding: 16px 20px;
  }

  .channel-table th,
  .channel-table td {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .section {
    padding: 56px 0;
  }

  .section__title {
    font-size: 1.4rem;
  }

  .page-hero {
    padding: 40px 0;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }
}

/* --- 背景オーバーレイ（モバイルメニュー用） --- */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
}

.nav-overlay.active {
  display: block;
}