/* =========================================================================
   A CAN SOLUTIONS Co.,Ltd. — main stylesheet
   Canva モバイル版 (8 ページ) と Canva デスクトップ版 (2 ページ) を元に
   モバイルファーストで構築し、768px 以上で PC レイアウトに切り替える。
   ヘッダー / フッター / ハンバーガーメニューは持たない。
   ブレークポイントは 768px の 1 つのみ。
   ========================================================================= */

/* ---------- design tokens ---------- */
:root {
  --color-ink: #1a1a1a;
  --color-ink-soft: #3a3a3a;
  --color-muted: #6e6e6e;
  --color-paper: #ffffff;
  --color-paper-cool: #f6f7f9;       /* 各セクションの薄いオフホワイト */
  --color-paper-warm: #fbf5e6;       /* お問い合わせのベージュ */
  --color-line: #c4944b;             /* 見出しのオレンジ/ゴールド下線 */
  --color-line-soft: rgba(196, 148, 75, 0.5);
  --color-accent: #a25a30;
  --color-accent-soft: #d49a78;
  --color-blue: #1f4fa0;
  --color-red: #d32a2f;
  --color-send: #f1a546;

  --font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Menlo, monospace;

  --container-max: 1200px;

  --transition: 220ms ease;
}

/* ---------- reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

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

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================================================================
   MOBILE FIRST STYLES (default = mobile, < 768px)
   Canva モバイル版モックアップ準拠
   ========================================================================= */

.container {
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* ---------- HERO (mobile) ---------- */
.hero {
  position: relative;
  background: var(--color-paper);
  padding: 4rem 1.25rem 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__desktop {
  display: none; /* desktop hero is hidden on mobile */
}

.hero__mobile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  max-width: 480px;
}

/* ---------- hero ロゴ要素の共通 wipe-up アニメーション ---------- */
/* Canva モバイル版の各テキストが上からスライドインして順番に現れる振る舞いを再現する */
/* ため、各要素を overflow:hidden と inner span の translateY で maskインさせる。 */
.hero__pre,
.hero__sub,
.hero__company {
  overflow: hidden;
  display: block;
}

.hero__pre-inner,
.hero__sub-inner,
.hero__company-inner {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
  animation: hero-rise-in 900ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}

.hero__pre-inner       { animation-delay: 100ms; }
.hero__sub-inner       { animation-delay: 1100ms; }
.hero__company-inner   { animation-delay: 1350ms; }

@keyframes hero-rise-in {
  0% {
    opacity: 0;
    transform: translateY(110%);
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__pre {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.95rem;
  color: var(--color-line);
  letter-spacing: 0.02em;
  margin: 0 0 1.5rem;
}

.hero__pre-inner {
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-underline-offset: 0.3em;
}

.hero__title {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: clamp(2.6rem, 12vw, 4rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1em;
}

.hero__title-line {
  display: inline-flex;
  justify-content: center;
  gap: 0.25em;
  flex-wrap: wrap;
  overflow: hidden;
}

.hero__title-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: hero-word-rise 900ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}

.hero__title-line:nth-child(1) .hero__title-word:nth-child(1) { animation-delay: 300ms; }
.hero__title-line:nth-child(1) .hero__title-word:nth-child(2) { animation-delay: 500ms; }
.hero__title-line:nth-child(2) .hero__title-word:nth-child(1) { animation-delay: 700ms; }

@keyframes hero-word-rise {
  0% {
    opacity: 0;
    transform: translateY(100%);
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__sub {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-line);
  letter-spacing: 0.02em;
  line-height: 1.6;
  margin: 1.5rem 0 0;
}

.hero__company {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  text-align: center;
}

.hero__company-inner {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.hero__logo {
  width: 28px;
  height: 28px;
}

/* ---------- SERVICES OVERVIEW (mobile) ---------- */
.services {
  background: var(--color-paper);
  padding: 3rem 0 3.5rem;
}

/* セクションヘッド共通(左寄せ + 下線 + 英語サブ) */
.section-head {
  margin: 0 0 1.5rem;
}

.section-head__ja {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  display: inline-block;
  margin: 0;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-line);
  color: var(--color-ink);
}

.section-head__en {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  margin: 0.5rem 0 0;
  line-height: 1.4;
}

.br-mobile { display: inline; }

.services__lead {
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.9;
  margin: 0 0 2rem;
  color: var(--color-ink);
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-card {
  border: 1px dashed rgba(196, 148, 75, 0.7);
  background: var(--color-paper);
  border-radius: 4px;
  transition: transform var(--transition), border-color var(--transition);
}

.service-card:hover {
  border-color: var(--color-line);
  transform: translateY(-2px);
}

.service-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.5rem;
  min-height: 110px;
}

.service-card__body {
  flex: 1;
  min-width: 0;
}

.service-card__title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0 0 0.4rem;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  line-height: 1.15;
}

.service-card__sub {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  margin: 0;
}

.service-card__more {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-ink);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

/* ---------- CASE DETAILS (mobile) ---------- */
.case {
  position: relative;
  isolation: isolate;
  background: var(--color-paper);
  padding: 3.5rem 0 5rem;
  overflow: hidden;
}

/* 各サービス詳細の下半分に異なるスパークル背景を敷く */
.case::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
  pointer-events: none;
}

.case--tech::before { background-image: url("../img/sparkle-tech.svg"); }
.case--design::before { background-image: url("../img/sparkle-design.svg"); }
.case--kpo::before { background-image: url("../img/sparkle-kpo.svg"); }
.case--consulting::before { background-image: url("../img/sparkle-consulting.svg"); }

/* 各サービス詳細セクションの上下端を背景色（白）にフェードさせ、
   隣接セクションとの境界線をぼかす。 */
.case::before {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 14%, #000 78%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 14%, #000 78%, transparent 100%);
}

.case::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 6rem;
  pointer-events: none;
  z-index: 0;
  background: linear-gradient(to bottom, transparent 0%, var(--color-paper) 100%);
}

.case__head {
  margin-bottom: 1rem;
}

.case__title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.85rem;
  letter-spacing: 0.01em;
  margin: 0;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--color-line);
  display: inline-block;
  color: var(--color-ink);
}

.case__subtitle {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--color-ink);
  letter-spacing: 0.01em;
  margin: 0.6rem 0 0;
  padding: 0 0.6rem;
  line-height: 1.4;
}

.case__desc {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-ink);
  margin: 1.5rem 0 0;
  padding: 0 0 1.25rem;
  border-bottom: 1px solid var(--color-line-soft);
}

.case__desc strong {
  font-weight: 700;
}

.case-block {
  margin-top: 2.25rem;
}

.case-block__ja {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  margin: 0;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-line);
  display: inline-block;
  color: var(--color-ink);
}

.case-block__en {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  margin: 0.5rem 0 1rem;
}

.case-block__lead {
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  padding-left: 0.5rem;
  color: var(--color-ink);
  line-height: 1.45;
}

.case-block__list {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-ink);
  padding-left: 1.5rem;
}

.case-block__list li {
  position: relative;
  padding-left: 1em;
  margin-bottom: 0.15rem;
}

.case-block__list li::before {
  content: "・";
  position: absolute;
  left: -0.1em;
  color: var(--color-ink);
}

.case-block__list--indent {
  padding-left: 1rem;
}

/* ---------- ABOUT (mobile) ---------- */
.about {
  background: var(--color-paper);
  padding: 3rem 0 3.5rem;
}

.about__head {
  text-align: center;
  margin-bottom: 1.5rem;
}

.about__title {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: 1.7rem;
  margin: 0 auto;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-line);
  display: inline-block;
  letter-spacing: 0.04em;
}

.about__title-en {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.6rem;
  color: #6b5a2a;
  letter-spacing: 0.04em;
  margin: 0.6rem 0 0;
}

.about__text {
  margin: 1.5rem 0 2.5rem;
}

.about__lead,
.about__mission {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.7;
  text-align: center;
  margin: 0 0 1.5rem;
  color: var(--color-ink);
}

.about__lead strong,
.about__mission strong {
  font-weight: 700;
}

.about__body {
  font-size: 0.85rem;
  line-height: 2;
  color: var(--color-ink);
  margin: 0 0 1.5rem;
  text-align: justify;
}

.team {
  display: grid;
  /* チームを 1行 × 2列 のグリッドにし、その中の テキスト行 と 画像行 を サブグリッドで
     共有することで、職位行数が異なってもメンバー間で画像の位置をそろえる。 */
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  column-gap: 1rem;
  row-gap: 0.4rem;
  margin-top: 1.5rem;
}

/* `.reveal { display: block }` を打ち消すために `.team > .team__member` の
   セレクタで詳細度を上げる。 */
.team > .team__member {
  text-align: left;
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 2;
  row-gap: 0;
}

.team__info {
  grid-row: 1;
}

.team__photo {
  grid-row: 2;
  align-self: start;
}

.team__name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  margin: 0;
  line-height: 1.4;
}

.team__role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-ink);
  margin: 0.35rem 0 0.75rem;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.team__role span {
  font-weight: 700;
}

.team__photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 0;
  overflow: hidden;
  background: #eceae4;
}

.team__photo-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
}

/* ---------- GROUP / LOCATIONS (mobile) ---------- */
.group {
  background: linear-gradient(
    to bottom,
    var(--color-paper) 0%,
    var(--color-paper) 65%,
    var(--color-paper-warm) 100%
  );
  padding: 3rem 0 3.5rem;
}

.group__head {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-line-soft);
  margin-bottom: 2rem;
}

.group__title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.14em;
  margin: 0;
  color: var(--color-ink);
}

.locations {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.location {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}

.location__map {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 11;
  background: #e3e3df;
  overflow: hidden;
  border-radius: 0;
}

/* Google Maps の iframe を 地図コンテナにフィットさせる。 */
.location__map-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.location__caption {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-ink);
  margin: 0.5rem 0 0;
  align-self: flex-end;
  text-align: right;
}

.location__info {
  text-align: center;
  margin-top: 0.5rem;
}

.location__name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
  line-height: 1.3;
}

.location__address {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  line-height: 1.6;
}

/* ---------- CONTACT (mobile) ---------- */
.contact {
  background: var(--color-paper-warm);
  padding: 2.5rem 0 4rem;
}

.contact__grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact__head {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.contact__title {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: 1.5rem;
  margin: 0;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-line);
  display: inline-block;
  align-self: flex-start;
}

.contact__title-en {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  margin: 0.25rem 0 0;
}

.contact__note {
  font-family: var(--font-jp);
  font-size: 0.78rem;
  color: var(--color-ink);
  margin: 0.5rem 0 0;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-row label {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-ink);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 0;
  border-radius: 10px;
  background: var(--color-paper);
  font: inherit;
  font-size: 0.85rem;
  color: var(--color-ink);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
  transition: box-shadow var(--transition);
}

.form-row textarea {
  border-radius: 10px;
  min-height: 100px;
  resize: vertical;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: #b6b6b6;
  font-family: var(--font-jp);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--color-accent);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

.btn-send {
  background: transparent;
  border: 0;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 0;
  color: var(--color-ink);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: transform var(--transition);
}

.btn-send:hover,
.btn-send:focus-visible {
  transform: translateY(-2px);
}

.btn-send__icon {
  position: relative;
  display: inline-block;
  width: 64px;
  height: 48px;
}

.btn-send__icon svg {
  width: 100%;
  height: 100%;
}

.btn-send__label {
  position: absolute;
  inset: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
}

.btn-send {
  position: relative;
}

/* ---------- HERO MARKETING (mobile = hidden) ---------- */
/* Canva デスクトップ版で言及される「Benefit from our tried and tested */
/* solutions.」で始まる GROW YOUR COMPANY セクション。モバイルでは     */
/* hero__mobile 側に同等の表示があるためここでは非表示にする。        */
.hero-marketing {
  display: none;
}

/* ============================================================ */
/* Scroll-triggered reveal animations (shared)                    */
/* Canva デザインで使われている 3 種類の入場アニメをそれぞれ      */
/* CSS で再現する。クラスを使い分けて部位ごとに適用する。         */
/*                                                                */
/* 1. .reveal         : 既定の wipe-up（マスク + translateY 100→0）*/
/*    GROW YOUR COMPANY 系の見出しや本文に使用。                  */
/* 2. .reveal--pop    : 文字ごとに左から順番にポップ表示する。     */
/*    section heading（サービスについて / Technology 等）に使用。 */
/* 3. .reveal--slide-l: 左からスライドインしてフェードイン。       */
/*    本文・リード文・段落（テキストブロック）に使用。           */
/* 4. .reveal--slide-r: 右からスライドインしてフェードイン。       */
/*    サービスカードや右寄せ要素に使用。                         */
/* ============================================================ */
.reveal {
  --reveal-delay: 0ms;
  display: block;
  /* JS がラッパー / 文字分割を行うまで隠して FOUC を防ぐ。 */
  visibility: hidden;
}

.reveal.reveal--ready {
  visibility: visible;
}

.reveal--delay-1 { --reveal-delay: 150ms; }
.reveal--delay-2 { --reveal-delay: 300ms; }
.reveal--delay-3 { --reveal-delay: 450ms; }

/* ---------- 1. 既定: マスク wipe-up（GROW YOUR COMPANY と同じ） ---------- */
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) {
  overflow: hidden;
}

.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > * {
  transform: translateY(110%);
  opacity: 0;
  transition: transform 950ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay),
    opacity 700ms ease-out var(--reveal-delay);
  will-change: transform, opacity;
}

.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf).is-visible > * {
  transform: translateY(0);
  opacity: 1;
}

/* 子要素が複数ある .reveal では順番に立ち上げてカスケード表現にする。 */
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > *:nth-child(2) {
  transition-delay: calc(var(--reveal-delay) + 100ms);
}
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > *:nth-child(3) {
  transition-delay: calc(var(--reveal-delay) + 200ms);
}
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > *:nth-child(4) {
  transition-delay: calc(var(--reveal-delay) + 300ms);
}
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > *:nth-child(5) {
  transition-delay: calc(var(--reveal-delay) + 400ms);
}
.reveal:not(.reveal--pop):not(.reveal--slide-l):not(.reveal--slide-r):not(.reveal--leaf) > *:nth-child(6) {
  transition-delay: calc(var(--reveal-delay) + 500ms);
}

/* JS が text-only な .reveal をこのラッパーで包む。マスク内で translateY するために */
/* block 表示にする。                                                                 */
.reveal__inner {
  display: block;
}

/* ---------- 2. ポップコーン式: 文字ごとに左からポップ表示 ---------- */
/* JS が .reveal--pop 配下のテキストノードを 1 文字ずつ <span class="reveal__char"> */
/* に分解する。各文字は scale + translateY + opacity でポップアップする。          */
.reveal--pop {
  overflow: visible;
  /* インライン要素にも適用できるよう display は変更しない */
}

.reveal--pop .reveal__char {
  display: inline-block;
  transform: translateY(0.4em) scale(0.4);
  opacity: 0;
  transition: transform 650ms cubic-bezier(0.34, 1.56, 0.64, 1) var(--reveal-char-delay, 0ms),
    opacity 500ms ease-out var(--reveal-char-delay, 0ms);
  will-change: transform, opacity;
}

.reveal--pop.is-visible .reveal__char {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* 改行用の空白文字は幅を確保しつつアニメーションさせない */
.reveal--pop .reveal__char--space {
  transform: none;
  opacity: 1;
  transition: none;
  width: 0.25em;
}

/* ---------- 3. 左からスライドイン ---------- */
.reveal--slide-l {
  overflow: hidden;
}

.reveal--slide-l > * {
  transform: translateX(-60px);
  opacity: 0;
  transition: transform 900ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay),
    opacity 700ms ease-out var(--reveal-delay);
  will-change: transform, opacity;
}

.reveal--slide-l.is-visible > * {
  transform: translateX(0);
  opacity: 1;
}

/* ---------- 4. 右からスライドイン ---------- */
.reveal--slide-r {
  overflow: hidden;
}

.reveal--slide-r > * {
  transform: translateX(60px);
  opacity: 0;
  transition: transform 900ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay),
    opacity 700ms ease-out var(--reveal-delay);
  will-change: transform, opacity;
}

.reveal--slide-r.is-visible > * {
  transform: translateX(0);
  opacity: 1;
}

/* ---------- 5. Leaf（子要素を持たない .reveal）はそれ自体をスライドアップ ---------- */
.reveal--leaf {
  display: block;
  overflow: visible;
  transform: translateY(60px);
  opacity: 0;
  transition: transform 950ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay),
    opacity 700ms ease-out var(--reveal-delay);
  will-change: transform, opacity;
}

.reveal--leaf > * {
  transform: none;
  opacity: 1;
  transition: none;
}

.reveal--leaf.is-visible {
  transform: translateY(0);
  opacity: 1;
}

/* =========================================================================
   DESKTOP STYLES (≥ 768px)
   Canva デスクトップ版モックアップ準拠 — モバイルとは別レイアウト
   ========================================================================= */
@media (min-width: 768px) {
  .container {
    max-width: var(--container-max);
    padding-inline: 3rem;
  }

  /* ---------- HERO (desktop): logo + name ONLY ---------- */
  .hero {
    min-height: 100vh;
    padding: 0;
  }

  .hero__mobile {
    display: none;
  }

  .hero__desktop {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 1.5rem;
  }

  .hero__desktop[aria-hidden="true"] {
    /* visible but decorative */
  }

  .hero__desktop-logo {
    width: clamp(140px, 18vw, 240px);
    height: auto;
  }

  .hero__desktop-name {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.08em;
    margin: 0;
    color: var(--color-ink);
  }

  .hero__desktop-tag {
    font-family: var(--font-mono);
    font-size: clamp(0.95rem, 1.6vw, 1.15rem);
    letter-spacing: 0.18em;
    color: var(--color-muted);
    text-transform: lowercase;
    margin: 0;
  }

  /* ---------- HERO MARKETING (desktop only) ---------- */
  /* PC 版で「Benefit from our tried and tested solutions.」で始まる        */
  /* GROW YOUR COMPANY 大見出しのページを 1 画面として表示する。         */
  .hero-marketing {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 4rem 3rem;
    background: var(--color-paper);
    text-align: center;
  }

  .hero-marketing__inner {
    width: 100%;
    max-width: 1080px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-marketing__pre {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: clamp(1rem, 1.4vw, 1.25rem);
    color: var(--color-line);
    margin: 0 0 2rem;
    line-height: 1.4;
    letter-spacing: 0.02em;
    overflow: hidden;
  }

  .hero-marketing__pre-inner {
    text-decoration: underline;
    text-decoration-color: var(--color-line);
    text-underline-offset: 0.3em;
  }

  .hero-marketing__pre-inner {
    display: inline-block;
    transform: translateY(110%);
    opacity: 0;
    animation: hero-rise-in 900ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
    animation-delay: 100ms;
    /* hero-marketing セクションがスクロールで可視になるまでアニメを一時停止しておく。 */
    animation-play-state: paused;
  }

  .hero-marketing.is-visible .hero-marketing__pre-inner {
    animation-play-state: running;
  }

  .hero-marketing__title {
    font-family: var(--font-jp);
    font-weight: 900;
    font-size: clamp(4.5rem, 11vw, 9rem);
    line-height: 0.95;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.05em;
  }

  .hero-marketing__title-line {
    display: inline-flex;
    justify-content: center;
    gap: 0.25em;
    flex-wrap: wrap;
    overflow: hidden;
  }

  .hero-marketing__title-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: hero-word-rise 900ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
    /* スクロールで可視になるまでアニメを一時停止しておく。 */
    animation-play-state: paused;
  }

  .hero-marketing.is-visible .hero-marketing__title-word {
    animation-play-state: running;
  }

  .hero-marketing__title-line:nth-child(1) .hero-marketing__title-word:nth-child(1) { animation-delay: 350ms; }
  .hero-marketing__title-line:nth-child(1) .hero-marketing__title-word:nth-child(2) { animation-delay: 550ms; }
  .hero-marketing__title-line:nth-child(2) .hero-marketing__title-word:nth-child(1) { animation-delay: 750ms; }

  .hero-marketing__sub {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: clamp(1rem, 1.4vw, 1.25rem);
    letter-spacing: 0.04em;
    line-height: 1.6;
    color: var(--color-line);
    margin: 2.5rem 0 0;
  }

  .hero-marketing__company {
    /* テキスト中央揃えのブロックとして配置し、実際の横並びレイアウトは
       JS が起こした wipe-up 用の .reveal__inner 側に付与し、アニメと
       並びの両方を成り立たせる。 */
    display: block;
    text-align: center;
    margin-top: 3rem;
    font-family: var(--font-mono);
    font-size: clamp(0.95rem, 1.1vw, 1.1rem);
    color: var(--color-ink);
    letter-spacing: 0.04em;
  }

  .hero-marketing__company > .reveal__inner {
    /* ロゴと社名を一行に inline-flex で並べる。 */
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
  }

  .hero-marketing__logo {
    width: clamp(36px, 3.5vw, 48px);
    height: auto;
    flex-shrink: 0;
  }

  /* ---------- SERVICES OVERVIEW (desktop) ---------- */
  /* PC 版: 左列に見出し+リード文、右列に4カードを縦並び */
  .services {
    padding: 6rem 0 7rem;
  }

  .services .container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 5rem;
    align-items: start;
  }

  .services__intro {
    display: block;
  }

  .services .section-head {
    margin: 0;
  }

  .services__lead {
    font-size: 1.05rem;
    line-height: 2;
    text-align: left;
    max-width: none;
    margin: 1.75rem 0 0;
  }

  .service-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .section-head__ja {
    font-size: 2.2rem;
  }

  .section-head__en {
    font-size: 1.2rem;
  }

  .br-mobile { display: none; }

  .service-card a {
    padding: 1.75rem 2rem;
    min-height: 110px;
  }

  .service-card__title {
    font-size: 1.75rem;
  }

  .service-card__sub {
    font-size: 0.85rem;
  }

  /* ---------- CASE (desktop): 2 column ---------- */
  .case {
    padding: 6rem 0 8rem;
  }

  .case::before {
    background-position: right bottom;
  }

  .case .container {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    column-gap: 5rem;
    row-gap: 2rem;
    align-items: start;
  }

  .case__head {
    grid-column: 1;
  }

  .case__title {
    font-size: 2.4rem;
  }

  .case__subtitle {
    font-size: 1.5rem;
    padding: 0;
  }

  .case__desc {
    grid-column: 1;
    margin-top: 1.5rem;
    font-size: 1.05rem;
    line-height: 2;
    padding-bottom: 2rem;
  }

  .case-block {
    grid-column: 2;
    margin-top: 0;
  }

  .case-block + .case-block {
    margin-top: 3rem;
  }

  .case-block__ja {
    font-size: 1.6rem;
  }

  .case-block__en {
    font-size: 0.95rem;
  }

  .case-block__lead {
    font-size: 1.25rem;
  }

  .case-block__list {
    font-size: 1rem;
    line-height: 2;
  }

  /* ---------- ABOUT (desktop) ---------- */
  .about {
    padding: 6rem 0;
  }

  .about__title {
    font-size: 2.4rem;
  }

  .about__title-en {
    font-size: 2.2rem;
  }

  .about__text {
    max-width: 78ch;
    margin: 2.5rem auto 4rem;
  }

  .about__lead,
  .about__mission {
    font-size: 1.4rem;
    line-height: 1.75;
  }

  .about__body {
    font-size: 1rem;
    line-height: 2;
    text-align: center;
  }

  .team {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 880px;
    margin-inline: auto;
  }

  .team__member {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .team__name {
    font-size: 1.05rem;
  }

  .team__role {
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
  }

  .team__photo {
    width: 280px;
    max-width: 100%;
    aspect-ratio: 3 / 4;
  }

  /* ---------- GROUP (desktop): map left, info right ---------- */
  .group {
    padding: 5rem 0 6rem;
  }

  .group__title {
    font-size: 2.4rem;
    letter-spacing: 0.18em;
  }

  .locations {
    gap: 4rem;
  }

  .location {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    text-align: left;
  }

  .location__map {
    aspect-ratio: 4 / 3;
    width: 100%;
  }

  .location__info {
    text-align: center;
    margin-top: 0;
  }

  .location__caption {
    text-align: center;
    align-self: center;
    margin-top: 0.75rem;
  }

  .location__name {
    font-size: 1.3rem;
  }

  .location__address {
    font-size: 0.95rem;
  }

  /* ---------- CONTACT (desktop): label left / field right ---------- */
  .contact {
    padding: 5rem 0 6rem;
  }

  .contact__grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    align-items: start;
  }

  .contact__head {
    position: sticky;
    top: 2rem;
    gap: 0.5rem;
  }

  .contact__title {
    font-size: 2.4rem;
  }

  .contact__title-en {
    font-size: 1.15rem;
  }

  .contact__note {
    font-size: 0.95rem;
    margin-top: 1rem;
  }

  .form-row:not(.form-row--textarea) {
    display: grid;
    grid-template-columns: 180px 1fr;
    align-items: center;
    gap: 1.5rem;
  }

  .form-row--textarea {
    display: grid;
    grid-template-columns: 180px 1fr;
    align-items: start;
    gap: 1.5rem;
  }

  .form-row label {
    font-size: 1rem;
    text-align: left;
  }

  .form-row input,
  .form-row textarea {
    padding: 1rem 1.4rem;
    border-radius: 999px;
    font-size: 0.95rem;
  }

  .form-row textarea {
    border-radius: 18px;
    min-height: 160px;
  }

  .btn-send__icon {
    width: 80px;
    height: 60px;
  }

  .btn-send__label {
    font-size: 1rem;
  }
}

/* ---------- reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .hero__title-word,
  .hero__pre-inner,
  .hero__sub-inner,
  .hero__company-inner,
  .hero-marketing__pre-inner,
  .hero-marketing__title-word,
  .reveal,
  .reveal > *,
  .reveal--leaf,
  .reveal--pop .reveal__char,
  .reveal--slide-l > *,
  .reveal--slide-r > * {
    opacity: 1;
    transform: none;
    filter: none;
    visibility: visible;
  }
}

/* ---------- BACK TO TOP ---------- */
/* Canva デザインの "Up Arrow" 表現に合わせ、青色のダブルシェブロンのみを表示する。 */
/* 背景・枠線は持たず、画面右端の上下中央に固定する。ページ毎に置かず 1 つだけ。     */
.back-to-top {
  position: fixed;
  top: 50%;
  right: 0.75rem;
  transform: translateY(-50%);
  z-index: 1000;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-blue);
  text-decoration: none;
  transition: transform var(--transition), color var(--transition), opacity var(--transition);
  opacity: 0.85;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  color: var(--color-blue);
  opacity: 1;
  transform: translateY(-50%) translateY(-4px);
  outline: none;
}

.back-to-top__icon {
  width: 36px;
  height: 36px;
  display: block;
}

@media (min-width: 768px) {
  .back-to-top {
    right: 1.25rem;
    width: 56px;
    height: 56px;
  }

  .back-to-top__icon {
    width: 48px;
    height: 48px;
  }
}