/* =========================================
   KOBELCO-inspired Portfolio Site
   Design Tokens
   ========================================= */
:root {
  --color-primary: #003a78;      /* KOBELCO風メインブルー */
  --color-primary-dark: #002347;
  --color-primary-light: #1857a4;
  --color-accent: #0078d4;
  --color-text: #1a1a1a;
  --color-text-sub: #5a5a5a;
  --color-text-mute: #8a8a8a;
  --color-bg: #ffffff;
  --color-bg-soft: #f5f7fa;
  --color-bg-gray: #eef1f5;
  --color-border: #e0e4ea;
  --color-white: #ffffff;

  --font-jp: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
  --font-en: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  --header-height: 72px;
  --header-height-mobile: 60px;
  --container-max: 1200px;
  --radius: 4px;

  --shadow-sm: 0 2px 8px rgba(0, 58, 120, 0.06);
  --shadow-md: 0 6px 20px rgba(0, 58, 120, 0.10);
  --shadow-lg: 0 12px 40px rgba(0, 58, 120, 0.15);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================
   Loader (intro logo animation)
   ========================================= */
.loader {
  position: fixed;
  inset: 0;
  background: #ffffff;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.9s ease, visibility 0.9s ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.loader-svg {
  width: 180px;
  height: 180px;
  display: block;
}

.loader-svg path {
  fill: transparent;
  stroke: #003a78;
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill-rule: evenodd;
}

/* Per-path draw + fill animations
   ─ ロゴ部分は旧タイミングの半速 (合計 ~4.0s → ~2.2s) */
.loader-svg .p-outer {
  stroke-dasharray: 5800;
  stroke-dashoffset: 5800;
  animation: l-draw 0.85s ease forwards 0.05s,
             l-fill 0.25s ease forwards 0.85s;
}
.loader-svg .p-ear-l,
.loader-svg .p-ear-r {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: l-draw 0.275s ease forwards 0.7s,
             l-fill 0.2s ease forwards 0.975s;
}
.loader-svg .p-ear-in-l,
.loader-svg .p-ear-in-r {
  stroke-dasharray: 700;
  stroke-dashoffset: 700;
  animation: l-draw 0.175s ease forwards 0.925s,
             l-fill 0.175s ease forwards 1.1s;
}
.loader-svg .p-face {
  /* 顔の輪郭 + 左右レンズの抜き穴 + 小さなアクセント2つを含む複合パス */
  stroke-dasharray: 5200;
  stroke-dashoffset: 5200;
  animation: l-draw 0.525s ease forwards 1.0s,
             l-fill 0.25s ease forwards 1.5s;
}
.loader-svg .p-eye-l,
.loader-svg .p-eye-r {
  /* 顔のレンズ穴が描かれた後に黒目が現れる */
  stroke-dasharray: 350;
  stroke-dashoffset: 350;
  animation: l-draw 0.15s ease forwards 1.5s,
             l-fill 0.15s ease forwards 1.65s;
}
.loader-svg .p-smile {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: l-draw 0.25s ease forwards 1.4s,
             l-fill 0.2s ease forwards 1.65s;
}
.loader-svg .p-check {
  stroke: #0078d4;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: l-draw 0.325s ease forwards 1.675s,
             l-fill-check 0.2s ease forwards 2.0s;
}

@keyframes l-draw { to { stroke-dashoffset: 0; } }
@keyframes l-fill { to { fill: #003a78; } }
@keyframes l-fill-check { to { fill: #0078d4; } }

.loader__name {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  letter-spacing: 0.55em;
  font-weight: 700;
  color: #003a78;
  text-transform: uppercase;
  padding-left: 0.55em; /* compensate for letter-spacing on last char */
  opacity: 0;
  animation: l-fadein 0.8s ease forwards 2.25s;
}

.loader__tagline {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: #8a8a8a;
  text-transform: uppercase;
  padding-left: 0.3em;
  margin-top: -10px;
  opacity: 0;
  animation: l-fadein 0.7s ease forwards 2.7s;
}

@keyframes l-fadein { to { opacity: 1; } }

/* Lock scroll while loader is up */
body.is-loading {
  overflow: hidden;
}

/* Reduce-motion: show static logo briefly */
@media (prefers-reduced-motion: reduce) {
  .loader-svg path {
    animation: none !important;
    stroke-dashoffset: 0 !important;
    fill: #003a78;
  }
  .loader-svg .p-check { fill: #0078d4; }
  .loader__name,
  .loader__tagline {
    animation: none !important;
    opacity: 1;
  }
}

/* =========================================
   Reset & Base
   ========================================= */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16.5px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

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

/* =========================================
   Header / Navigation
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0);
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

/* ヒーローのないページではデフォルトで白背景 */
.header.solid {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

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

.header__logo {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-white);
  transition: color 0.3s ease;
}

.header__logo .logo-mark {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  margin-right: 10px;
  vertical-align: middle;
}

.header.scrolled .header__logo,
.header.solid .header__logo {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  position: relative;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-white);
  padding: 8px 0;
  transition: color 0.3s ease;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s var(--ease-out);
}

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

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

.nav__cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 11px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: background 0.3s ease, transform 0.2s ease;
}

.nav__cta:hover { background: var(--color-primary); transform: translateY(-1px); }
.nav__cta::after { display: none; }

/* Hamburger */
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 1100;
}

.hamburger span {
  position: absolute;
  left: 8px;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 20px; }
.hamburger span:nth-child(3) { top: 26px; }

.header.scrolled .hamburger span,
.header.solid .hamburger span { background: var(--color-text); }

.hamburger.active span:nth-child(1) { top: 20px; transform: rotate(45deg); background: var(--color-text); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 20px; transform: rotate(-45deg); background: var(--color-text); }

/* =========================================
   Hero (Top page)
   ========================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  color: var(--color-white);
}

.hero__slides {
  position: absolute;
  inset: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 2.2s ease-in-out;
  /* zoom は .active の切替と独立して常時動かす。これで切替時に
     transform が初期値に戻る「ガク戻り」が発生しない。 */
  animation: hero-zoom 16s ease-in-out infinite alternate;
  will-change: opacity, transform;
}

.hero__slide.active { opacity: 1; }

@keyframes hero-zoom {
  from { transform: scale(1); }
  to   { transform: scale(1.1); }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 35, 71, 0.55) 0%, rgba(0, 58, 120, 0.35) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__eyebrow {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 0.3em;
  margin-bottom: 24px;
  opacity: 0;
  animation: fade-up 1s 0.3s var(--ease-out) forwards;
}

.hero__title {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 28px;
  opacity: 0;
  animation: fade-up 1s 0.5s var(--ease-out) forwards;
}

.hero__title .accent { color: #6ec4ff; }

.hero__lead {
  font-size: clamp(16px, 1.7vw, 19px);
  max-width: 640px;
  line-height: 1.95;
  opacity: 0;
  animation: fade-up 1s 0.7s var(--ease-out) forwards;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  color: var(--color-white);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  z-index: 2;
  opacity: 0;
  animation: fade-up 1s 1.5s var(--ease-out) forwards;
}

.hero__scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 50px;
  background: var(--color-white);
  margin: 12px auto 0;
  animation: scroll-line 2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scroll-line {
  0%   { transform: scaleY(0); }
  50%  { transform: scaleY(1); }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================
   Page Title (for subpages)
   ========================================= */
.page-header {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' preserveAspectRatio='none'><polygon points='100,0 100,100 0,100' fill='%23ffffff' opacity='0.05'/></svg>");
  background-size: cover;
}

.page-header__inner {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.page-header__en {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.3em;
  opacity: 0.8;
  margin-bottom: 12px;
}

.page-header__title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
}

/* =========================================
   Sections
   ========================================= */
.section {
  padding: 100px 0;
}

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

.section__head {
  text-align: center;
  margin-bottom: 60px;
}

.section__en {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: block;
}

.section__title {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section__title::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  background: var(--color-accent);
  margin: 22px auto 0;
}

.section__lead {
  font-size: 16px;
  color: var(--color-text-sub);
  max-width: 760px;
  margin: 0 auto;
}

/* タイトル自体がリンクの場合 */
.section__title-link {
  display: inline-block;
  color: var(--color-primary);
  transition: color 0.3s ease;
  position: relative;
}

.section__title-link::after {
  content: " →";
  font-size: 0.65em;
  vertical-align: middle;
  margin-left: 8px;
  color: var(--color-accent);
  transition: transform 0.3s var(--ease-out);
  display: inline-block;
}

.section__title-link:hover { color: var(--color-accent); }
.section__title-link:hover::after { transform: translateX(6px); }

/* =========================================
   Scroll-in animation
   ========================================= */
.reveal {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* =========================================
   Work cards
   ========================================= */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.work-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.work-card__img {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  position: relative;
  overflow: hidden;
}

.work-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.work-card:hover .work-card__img img { transform: scale(1.06); }

.work-card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255,255,255,0.95);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border-radius: 2px;
}

.work-card__body {
  padding: 28px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.work-card__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.work-card__desc {
  font-size: 15px;
  color: var(--color-text-sub);
  margin-bottom: 22px;
  flex: 1;
  line-height: 1.85;
}

.work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.work-card__tag {
  font-size: 12px;
  background: var(--color-bg-gray);
  color: var(--color-text-sub);
  padding: 5px 12px;
  border-radius: 999px;
}

.work-card__link {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  align-self: flex-start;
}

.work-card__link::after {
  content: " →";
  transition: margin-left 0.3s ease;
  display: inline-block;
}

.work-card__link:hover::after { margin-left: 6px; }

/* =========================================
   About / Profile
   ========================================= */
.profile {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: start;
}

.profile__photo {
  aspect-ratio: 1;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 38px rgba(0, 58, 120, 0.12);
  padding: 18px;
  overflow: hidden;
}

.profile__photo img,
.profile__photo svg {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.profile__name {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.profile__role {
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 14px;
  letter-spacing: 0.15em;
  margin-bottom: 28px;
}

.profile__text { color: var(--color-text-sub); font-size: 16px; line-height: 1.95; }
.profile__text p { margin-bottom: 18px; }

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.skill-card {
  background: var(--color-white);
  padding: 28px 24px;
  border-radius: var(--radius);
  border-top: 3px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.skill-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.skill-card__desc {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.85;
}

/* =========================================
   CTA Section / Contact
   ========================================= */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 80px 0;
  text-align: center;
}

.cta__title {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  margin-bottom: 18px;
}

.cta__text {
  color: rgba(255,255,255,0.88);
  font-size: 16px;
  margin-bottom: 36px;
}

.btn {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 16px 44px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.05em;
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 14px rgba(0, 120, 212, 0.4);
}

.btn:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,255,255,0.3);
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-white);
  box-shadow: none;
}

.btn--primary {
  background: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0, 58, 120, 0.3);
}

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

/* Contact form */
.contact {
  max-width: 720px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.form-label .required {
  color: #d04040;
  margin-left: 8px;
  font-size: 11px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 16px;
  background: var(--color-white);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-primary) 50%),
                    linear-gradient(135deg, var(--color-primary) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.15);
}

.form-help {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 6px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; gap: 0; }
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

.form-submit {
  text-align: center;
  margin-top: 32px;
}

/* 送信ボタンの送信中・無効状態 */
.btn:disabled,
.btn[aria-busy="true"] {
  opacity: 0.6;
  cursor: wait;
  pointer-events: none;
}

/* 送信完了・エラーの表示エリア */
.form-result {
  text-align: center;
  padding: 56px 24px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  animation: result-fade 0.6s var(--ease-out);
}

.form-result--error {
  border-top: 3px solid #d04040;
}

.form-result--success {
  border-top: 3px solid var(--color-accent);
}

.form-result__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-white);
}

.form-result--error .form-result__icon {
  background: #d04040;
}

.form-result__icon svg {
  width: 36px;
  height: 36px;
  stroke: currentColor;
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.form-result__title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.form-result--error .form-result__title { color: #b03030; }

.form-result__text {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.9;
  margin-bottom: 24px;
}

@keyframes result-fade {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* honeypot - 完全に非表示 */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* =========================================
   Footer
   ========================================= */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 24px;
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
}

.footer__brand {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer__desc {
  font-size: 14px;
  line-height: 1.85;
}

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

.footer__col-title {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer__col a {
  display: block;
  font-size: 14px;
  padding: 5px 0;
  transition: color 0.2s ease;
}

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

.footer__bottom {
  max-width: var(--container-max);
  margin: 40px auto 0;
  padding: 24px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 12px;
  font-family: var(--font-en);
}

/* =========================================
   Home: Service / Intro section
   ========================================= */
.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.intro-card {
  text-align: center;
  padding: 36px 24px 32px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
  border-top: 3px solid transparent;
}

.intro-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-top-color: var(--color-accent);
}

/* グレー背景セクション内ではカードに枠だけ与える */
.section--gray .intro-card { background: var(--color-white); }

/* アイコン円 */
.intro-card__icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 22px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  box-shadow: 0 10px 24px rgba(0, 58, 120, 0.20);
  transition: transform 0.5s var(--ease-out);
}

.intro-card:hover .intro-card__icon {
  transform: rotate(-6deg) scale(1.06);
}

.intro-card__icon svg {
  width: 42px;
  height: 42px;
}

.intro-card__num {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--color-accent);
  letter-spacing: 0.3em;
  margin-bottom: 14px;
}

.intro-card__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.intro-card__desc {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.85;
}

/* セクション末尾の詳細リンク */
.section__more {
  text-align: center;
  margin-top: 48px;
}

.section__more-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 32px;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease-out);
}

.section__more-link::after {
  content: "→";
  font-family: var(--font-en);
  transition: transform 0.3s var(--ease-out);
}

.section__more-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.section__more-link:hover::after { transform: translateX(6px); }

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 1024px) {
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header { height: var(--header-height-mobile); }

  .hamburger { display: block; }

  /* モバイルナビ */
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 80px 40px;
    gap: 24px;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    transition: right 0.4s var(--ease-out);
  }

  .nav.is-open { right: 0; }

  .nav__link {
    color: var(--color-text) !important;
    font-size: 17px;
    width: 100%;
  }

  .nav__cta {
    margin-top: 12px;
    width: 100%;
    text-align: center;
  }

  /* オーバーレイ */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 999;
  }

  .nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .section { padding: 70px 0; }
  .section__head { margin-bottom: 40px; }

  .hero { min-height: 500px; }
  .hero__scroll { bottom: 24px; }

  .page-header { padding-top: calc(var(--header-height-mobile) + 40px); padding-bottom: 40px; }

  .profile {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .profile__photo {
    width: 180px;
    margin: 0 auto;
  }

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

  .footer__nav { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header__inner { padding: 0 16px; }
  .works-grid { grid-template-columns: 1fr; }
}

/* Print / Reduce-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}