/* ============================================
   Tether Light — base styles
   ============================================ */

@font-face {
  font-family: "Harenosora";
  src: url("../fonts/Harenosora.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --color-primary: #649CD3;
  --color-primary-dark: #4B759E;
  --color-primary-light: #83B0DC;
  --color-primary-tint: #F3F7FB;
  --color-white: #FFFFFF;
  --color-black: #1A1B24;
  --color-gray: #6B7180;
  --color-gray-light: #F5F6FA;
  --color-border: #E3E6F0;

  --font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-en: "Inter Tight", "Noto Sans JP", sans-serif;
  --font-hand: "Harenosora", "Klee One", "Noto Sans JP", cursive;

  --container-width: 1160px;
  --header-height: 76px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-jp);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.br-sp { display: none; }

@media (max-width: 600px) {
  .br-pc { display: none; }
  .br-sp { display: inline; }
}

/* ============================================
   共通パーツ
   ============================================ */

.section {
  padding: 100px 0;
}

.section-tag {
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  font-size: 14px;
  text-align: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.section-lead {
  text-align: center;
  color: var(--color-gray);
  max-width: 560px;
  margin: 0 auto 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.03em;
  transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn__arrow {
  display: inline-block;
  transition: transform var(--transition);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
}
.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 8px 24px rgba(100, 156, 211, 0.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(100, 156, 211, 0.45);
}
.btn--primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* 表示アニメーション */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* スクロールで表示されてから少し間をおいて不透明になるセクション（事業内容・ニュース・会社概要） */
.scroll-reveal {
  opacity: 0;
  transition: opacity 0.9s ease;
}

.scroll-reveal.is-visible {
  opacity: 1;
}

/* ============================================
   ヘッダー
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.is-scrolled,
.header.header--solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header .container {
  max-width: none;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--color-white);
  transition: color var(--transition);
}

.header.is-scrolled .logo,
.header.header--solid .logo {
  color: var(--color-black);
}

.logo__mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo__text-img {
  height: 15px;
  width: auto;
}

.logo__mark--blue,
.logo__text-img--blue {
  display: none;
}

.header.is-scrolled .logo__mark--white,
.header.is-scrolled .logo__text-img--white,
.header.header--solid .logo__mark--white,
.header.header--solid .logo__text-img--white {
  display: none;
}

.header.is-scrolled .logo__mark--blue,
.header.is-scrolled .logo__text-img--blue,
.header.header--solid .logo__mark--blue,
.header.header--solid .logo__text-img--blue {
  display: block;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-white);
  position: relative;
  transition: color var(--transition);
}

.header.is-scrolled .nav__link,
.header.header--solid .nav__link {
  color: var(--color-black);
}

.nav__link:not(.nav__link--cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width var(--transition);
}
.nav__link:not(.nav__link--cta):hover::after {
  width: 100%;
}

.nav__link--cta {
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-white) !important;
}
.nav__link--cta:hover {
  background: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  margin: 0 auto;
}

.header.is-scrolled .nav-toggle span,
.header.header--solid .nav-toggle span {
  background: var(--color-black);
}

.nav-toggle.is-active span {
  background: var(--color-black) !important;
}
.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   ヒーロー
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 15%, rgba(70, 93, 170, 0.5), transparent 45%),
    radial-gradient(circle at 90% 85%, rgba(70, 93, 170, 0.4), transparent 55%),
    linear-gradient(160deg, rgba(5, 6, 11, 0.65) 0%, rgba(18, 22, 43, 0.6) 45%, rgba(38, 52, 101, 0.55) 80%, rgba(100, 156, 211, 0.5) 130%),
    url("../images/hero-photo.jpg");
  background-size: auto, auto, auto, cover;
  background-position: center, center, center, center;
  background-repeat: no-repeat, no-repeat, no-repeat, no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.05), transparent 35%),
    radial-gradient(circle at 75% 25%, rgba(255, 255, 255, 0.05), transparent 30%);
}

.hero__curve {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  line-height: 0;
}

.hero__curve svg {
  display: block;
  width: 100%;
  height: clamp(50px, 8vw, 110px);
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding-top: var(--header-height);
  color: var(--color-white);
  /* 画面が広がってもテキストを中央に寄せず、左端からの余白を一定に保つ。
     .container の中央寄せ（max-width + margin auto）をヒーローでのみ解除する。 */
  max-width: none;
  margin-left: 0;
  margin-right: auto;
  padding-left: clamp(24px, 7vw, 120px);
  padding-right: 24px;
}

/* ヒーロー内のテキストは上下の動きをつけず、ゆっくり不透明度だけを上げて表示する。
   （他セクションの [data-animate] は従来どおり下から浮かび上がる） */
.hero__eyebrow[data-animate],
.hero__brand[data-animate],
.hero__lead[data-animate] {
  transform: none;
  transition: opacity 1.1s ease;
}

.hero__eyebrow[data-animate].is-visible,
.hero__brand[data-animate].is-visible,
.hero__lead[data-animate].is-visible {
  transform: none;
}

.hero__eyebrow {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
}

.hero__tagline {
  position: relative;
  z-index: 1;
  display: inline-block;
  font-family: var(--font-hand);
  font-size: clamp(36px, 5.8vw, 76px);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.15;
  /* 手書きフォントは描画範囲が行ボックスより上下に大きく、そのままクリップすると
     文字の上下が切れる。clip-path の負の値は Safari で無効になるため、
     パディングでボックス自体を広げて逃がす。
     見た目の位置が変わらないよう、広げた分は margin で打ち消している。 */
  padding-top: 0.25em;
  padding-bottom: 0.25em;
  margin-top: -0.25em;
  margin-bottom: calc(44px - 0.25em);
  opacity: 0;
  -webkit-clip-path: inset(0 100% 0 0);
  clip-path: inset(0 100% 0 0);
  /* 他のテキスト（英字キャッチ・ロゴ・説明文）が 1.1s かけて出そろってから描き始める */
  animation: tagline-reveal 1s 1.3s ease-out forwards;
}

@keyframes tagline-reveal {
  from {
    opacity: 0;
    -webkit-clip-path: inset(0 100% 0 0);
    clip-path: inset(0 100% 0 0);
  }
  to {
    opacity: 1;
    -webkit-clip-path: inset(0 0 0 0);
    clip-path: inset(0 0 0 0);
  }
}

/* 動きを減らす設定では、左から現れる演出は使わない。
   ただし完全に無効化すると見出しだけが突然現れて他のテキストと揃わないため、
   他と同じく不透明度だけを上げるアニメーションに差し替える。 */
@media (prefers-reduced-motion: reduce) {
  .hero__tagline {
    -webkit-clip-path: none;
    clip-path: none;
    animation: tagline-fade 1s 1.3s ease-out forwards;
  }
}

@keyframes tagline-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hero__brand {
  margin-bottom: 16px;
}

.hero__brand-img {
  width: clamp(140px, 16vw, 200px);
  height: auto;
}

.hero__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin-bottom: 44px;
}

.hero__scroll {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.75);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--color-white);
  animation: scrollLine 1.8s infinite;
}

@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(250%); }
}

/* ============================================
   ニュース
   ============================================ */

.news {
  background: var(--color-white);
}

.news-list {
  border-top: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.news-item:hover {
  background: var(--color-gray-light);
}

.news-item:hover .news-item__arrow {
  transform: translateX(4px);
  opacity: 1;
}

.news-item__thumb {
  flex-shrink: 0;
  width: 180px;
  height: 120px;
  border-radius: 14px;
  object-fit: cover;
  background: var(--color-gray-light);
}

/* 仮サムネイル（実データ導入後は img タグに置き換え） */
.news-item__thumb--sample-1 {
  background: linear-gradient(135deg, #5E76C7, var(--color-primary));
}
.news-item__thumb--sample-2 {
  background: linear-gradient(135deg, var(--color-primary), #2C3B75);
}
.news-item__thumb--sample-3 {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
}

.news-item__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.news-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.news-item__category {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-tint);
  padding: 4px 12px;
  border-radius: 999px;
  flex-shrink: 0;
}

.news-item__date {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  flex-shrink: 0;
}

.news-item__title {
  font-size: 15.5px;
  color: var(--color-black);
}

.news-item__arrow {
  font-family: var(--font-en);
  color: var(--color-gray);
  opacity: 0.6;
  transition: transform var(--transition), opacity var(--transition);
  flex-shrink: 0;
}

.news-viewall {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary-dark);
  transition: color var(--transition);
}

.news-viewall:hover {
  color: var(--color-primary);
}

.news-viewall .btn__arrow {
  transition: transform var(--transition);
}

.news-viewall:hover .btn__arrow {
  transform: translateX(4px);
}

/* ============================================
   事業内容
   ============================================ */

.business {
  background: var(--color-gray-light);
}

.business-list {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.business-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.business-item--reverse .business-item__media {
  order: 2;
}
.business-item--reverse .business-item__body {
  order: 1;
}

.business-item__visual {
  aspect-ratio: 4 / 3;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.business-item__visual--framed {
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
  background: var(--color-white);
  padding: 32px;
}

.business-item__logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.business-item__visual--slideshow {
  background: var(--color-gray-light);
  /* SNSメディア運営事業のロゴ（--framed）と同じ落ち影を揃える */
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
}

.business-item__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.business-item__slide.is-active {
  opacity: 1;
}

.business-item__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.18), transparent 40%),
    radial-gradient(circle at 80% 75%, rgba(255,255,255,0.14), transparent 45%);
}

.business-item__visual--shooting {
  background: linear-gradient(135deg, #5E76C7, var(--color-primary));
}

.business-item__visual--media {
  background: linear-gradient(135deg, var(--color-primary), #2C3B75);
}

.visual-icon {
  font-size: 72px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.2));
}

.business-item__number {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 96px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.2));
}

.business-item__no {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.business-item__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin: 12px 0 20px;
}

.business-item__desc {
  color: var(--color-gray);
  margin-bottom: 24px;
}

.business-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.business-item__tags li {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary-dark);
  background: var(--color-primary-tint);
  padding: 8px 16px;
  border-radius: 999px;
}

.business-item__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-primary-dark);
  transition: color var(--transition);
}

.business-item__cta:hover {
  color: var(--color-primary);
}

.business-item__cta:hover .btn__arrow {
  transform: translateX(4px);
}

/* ============================================
   実績（Works）
   ============================================ */

.works-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 48px;
}

.works-tabs__item {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-gray);
  background: var(--color-gray-light);
  border: 1px solid transparent;
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.works-tabs__item:hover {
  color: var(--color-primary-dark);
}

.works-tabs__item.is-active {
  background: var(--color-primary);
  color: var(--color-white);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 24px;
  margin-bottom: 48px;
}

.work-card {
  display: block;
  color: inherit;
}

.work-card__thumb-wrap {
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  background: var(--color-gray-light);
  margin-bottom: 16px;
}

.work-card__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.work-card:hover .work-card__thumb {
  transform: scale(1.04);
}

.work-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 6px;
}

.work-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 12.5px;
  color: var(--color-gray);
}

.works-empty {
  text-align: center;
  color: var(--color-gray);
  padding: 64px 0;
}

.works-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.works-count {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--color-gray);
  font-variant-numeric: tabular-nums;
}

.works-loadmore {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-primary-dark);
  background: var(--color-primary-tint);
  border: none;
  padding: 14px 36px;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.works-loadmore:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* 案件詳細ページ */

.work-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-family: var(--font-en);
  font-size: 13.5px;
  color: var(--color-gray);
}

.work-header__category {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-tint);
  padding: 4px 12px;
  border-radius: 999px;
}

.work-description {
  color: var(--color-black);
  margin-bottom: 48px;
}

.work-video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 48px;
}

.work-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.work-gallery {
  display: flex;
  flex-direction: column;
  gap: 64px;
  margin-bottom: 64px;
}

.work-gallery__item {
  display: flex;
  flex-direction: column;
}

.work-gallery__img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  cursor: zoom-in;
}

.work-gallery__caption {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--color-gray);
}

.work-related {
  border-top: 1px solid var(--color-border);
  padding-top: 48px;
  margin-bottom: 48px;
}

.work-related__heading {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-gray);
  margin-bottom: 24px;
}

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

.work-pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
}

.work-pager__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13.5px;
  color: var(--color-gray);
  transition: color var(--transition);
  max-width: 45%;
}

.work-pager__link:hover {
  color: var(--color-primary);
}

.work-pager__link--next {
  text-align: right;
  align-items: flex-end;
}

.work-pager__label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-gray);
}

.work-pager__title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-black);
}

/* ライトボックス */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(5, 6, 11, 0.92);
}

.lightbox.is-open {
  display: flex;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 8px;
}

.lightbox__caption {
  position: absolute;
  bottom: 32px;
  left: 0;
  right: 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  border: none;
  border-radius: 999px;
  width: 44px;
  height: 44px;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255, 255, 255, 0.24);
}

.lightbox__close {
  top: 24px;
  right: 24px;
}

.lightbox__prev {
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__next {
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
}

/* ============================================
   会社概要
   ============================================ */

.company {
  background: var(--color-white);
}

.company-table-wrap {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
}

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

.company-table tr {
  border-bottom: 1px solid var(--color-border);
}
.company-table tr:last-child {
  border-bottom: none;
}

.company-table th,
.company-table td {
  text-align: left;
  padding: 22px 28px;
  font-size: 14.5px;
  vertical-align: top;
}

.company-table th {
  width: 160px;
  color: var(--color-primary-dark);
  font-weight: 700;
  background: var(--color-primary-tint);
}

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

/* ============================================
   CTA
   ============================================ */

.cta {
  background: linear-gradient(135deg, #2C3B75, var(--color-primary));
  padding: 90px 0;
}

.cta__inner {
  text-align: center;
  color: var(--color-white);
}

.cta__title {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta__text {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
}

/* ============================================
   記事ページ（ニュース詳細・一覧）
   ============================================ */

.article {
  padding: calc(var(--header-height) + 64px) 0 100px;
}

.article__inner {
  max-width: 720px;
}

.article__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-gray);
  margin-bottom: 40px;
  transition: color var(--transition);
}

.article__back:hover {
  color: var(--color-primary);
}

.article__date {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.article__title {
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.article__body {
  font-size: 15.5px;
  color: var(--color-black);
}

.article__body p {
  margin-bottom: 24px;
}

.article__body h2 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  margin: 40px 0 16px;
}

.article__body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin: 32px 0 12px;
}

.article__body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 8px 0 24px;
}

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

.article__body ul,
.article__body ol {
  margin: 0 0 24px 1.4em;
}

.article__body li {
  margin-bottom: 8px;
}

.article__body blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: 16px;
  color: var(--color-gray);
  margin: 0 0 24px;
}

.article__body strong {
  font-weight: 700;
}

.article__thumb {
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-bottom: 32px;
}

.article__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 16px;
}

@media (max-width: 480px) {
  .article__actions {
    flex-direction: column;
  }
  .article__actions .btn {
    width: 100%;
  }
}

.news-index-list {
  border-top: 1px solid var(--color-border);
}

/* ============================================
   お問い合わせフォーム
   ============================================ */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 8px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-black);
}

.form-label__badge {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 2px 10px;
  border-radius: 999px;
}

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

.form-label__badge--optional {
  color: var(--color-gray);
  background: var(--color-gray-light);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 16px 18px;
  font-family: var(--font-jp);
  font-size: 16px;
  color: var(--color-black);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-textarea {
  min-height: 180px;
  line-height: 1.8;
  resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.form-input:invalid:not(:placeholder-shown),
.form-textarea:invalid:not(:placeholder-shown) {
  border-color: var(--color-black);
}

.form-checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-top: 8px;
}

.form-checkbox-field input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.form-checkbox-field label {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.form-hint {
  font-size: 12.5px;
  color: var(--color-gray);
}

.contact-form .btn {
  align-self: center;
  width: 100%;
  max-width: 360px;
  margin-top: 8px;
}

@media (max-width: 480px) {
  .contact-form .btn {
    align-self: stretch;
  }
}

/* ============================================
   フッター
   ============================================ */

.footer {
  background: var(--color-white);
  color: var(--color-gray);
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer__nav ul {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer__nav a {
  font-size: 13.5px;
  color: var(--color-gray);
  transition: color var(--transition);
}
.footer__nav a:hover {
  color: var(--color-primary);
}

.footer__copy {
  text-align: center;
  font-size: 11.5px;
  color: var(--color-gray);
  margin-top: 20px;
  opacity: 0.7;
}

/* ============================================
   レスポンシブ対応（タブレット）
   ============================================ */

@media (max-width: 1024px) {
  .business-item {
    gap: 36px;
  }
}

/* ============================================
   レスポンシブ対応（スマホ／タブレット共通）
   ============================================ */

@media (max-width: 860px) {
  /* 狭い画面では従来どおりコンテナと同じ左右余白に戻す */
  .hero__inner {
    padding-left: 24px;
  }

  /* 画面が狭いと写真が左右に切り取られるため、
     主役である右側の額縁が中心に残るよう写真レイヤーだけ表示位置をずらす。 */
  .hero__bg {
    background-position: center, center, center, 85% center;
  }

  .section {
    padding: 72px 0;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }

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

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 32px 24px;
  }

  .nav__list li {
    width: 100%;
  }

  .nav__link {
    display: block;
    width: 100%;
    padding: 16px 4px;
    color: var(--color-black) !important;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link--cta {
    margin-top: 16px;
    text-align: center;
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .news-item {
    gap: 14px;
    padding: 16px 4px;
  }

  .news-item__thumb {
    width: 126px;
    height: 84px;
    border-radius: 12px;
  }

  .news-item__date {
    font-size: 13px;
  }

  .news-item__category {
    font-size: 11px;
    padding: 3px 10px;
  }

  .news-item__title {
    font-size: 14.5px;
  }

  .business-item,
  .business-item--reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .business-item--reverse .business-item__media,
  .business-item--reverse .business-item__body {
    order: initial;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 16px;
  }

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

  .work-gallery {
    gap: 40px;
  }

  .lightbox__prev,
  .lightbox__next {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  :root {
    --header-height: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 56px 0;
  }

  .company-table th,
  .company-table td {
    padding: 16px 18px;
    font-size: 13.5px;
  }

  .company-table th {
    width: 110px;
  }

  .business-item__tags li {
    font-size: 12px;
    padding: 6px 14px;
  }

  .footer__nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

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

  .work-related__grid {
    grid-template-columns: 1fr;
  }

  .work-pager {
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
  }

  .work-pager__link,
  .work-pager__link--next {
    max-width: 100%;
    align-items: flex-start;
    text-align: left;
  }
}