/* ===== リセット・基本設定 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a1a;
  line-height: 1.9;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.04em;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 800px; }
.sp-only { display: none; }

/* ===== ボタン ===== */
.btn {
  display: inline-block;
  padding: 16px 48px;
  border-radius: 9999px;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  text-align: center;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary {
  background: #1a1a1a;
  color: #fff;
  border-color: #1a1a1a;
}
.btn--primary:hover { background: #333; border-color: #333; }
.btn--outline {
  background: transparent;
  color: #1a1a1a;
  border-color: #1a1a1a;
}
.btn--outline:hover { background: #1a1a1a; color: #fff; }
.btn--white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.btn--white:hover { background: #fff; color: #1a1a1a; border-color: #fff; }
.btn--hero-primary {
  background: #fff;
  color: #1a1a1a;
  border-color: #fff;
  font-weight: 500;
}
.btn--hero-primary:hover { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn--lg { padding: 18px 56px; font-size: 0.95rem; }
.btn--sm { padding: 10px 28px; font-size: 0.8rem; }

/* ===== セクションタイトル ===== */
.section-header { text-align: center; margin-bottom: 64px; }
.section-header__en {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 12px;
  font-weight: 400;
}
.section-header__ja {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.8rem;
  font-weight: 400;
  color: #1a1a1a;
  letter-spacing: 0.1em;
  line-height: 1.5;
}
.section-header__ja--white { color: #fff; }
.section-header__en--white { color: rgba(255,255,255,0.5); }
.section-header__line {
  width: 40px;
  height: 1px;
  background: #1a1a1a;
  margin: 20px auto 0;
}
.section-header__line--white { background: rgba(255,255,255,0.4); }

/* ===== ヘッダー ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0);
  transition: all 0.4s;
}
.header.is-scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.header__logo { display: flex; flex-direction: column; line-height: 1.2; }
.header__logo-main {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  transition: color 0.4s;
}
.header.is-scrolled .header__logo-main { color: #1a1a1a; }
.header__logo-sub {
  font-size: 0.55rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.2em;
  transition: color 0.4s;
}
.header.is-scrolled .header__logo-sub { color: #999; }
.header__nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.header__nav-list a {
  color: rgba(255,255,255,0.85);
  transition: color 0.3s;
  font-weight: 400;
}
.header.is-scrolled .header__nav-list a { color: #555; }
.header__nav-list a:hover { color: #fff; }
.header.is-scrolled .header__nav-list a:hover { color: #1a1a1a; }
.header__nav-list .btn {
  color: #fff;
  border-color: rgba(255,255,255,0.5);
  padding: 8px 24px;
  font-size: 0.75rem;
}
.header.is-scrolled .header__nav-list .btn {
  color: #1a1a1a;
  border-color: #1a1a1a;
}
.header.is-scrolled .header__nav-list .btn:hover {
  background: #1a1a1a;
  color: #fff;
}
.header__hamburger { display: none; }

/* ===== ヒーロー ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0a0a0a;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: url('images/work04.jpg') center/cover no-repeat;
  opacity: 0.45;
  filter: brightness(0.7);
}
.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 0 24px;
}
.hero__en {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 24px;
  font-weight: 400;
}
.hero__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}
.hero__desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 48px;
  line-height: 2;
  font-weight: 300;
  letter-spacing: 0.06em;
}
.hero__actions { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== リード文 ===== */
.lead {
  padding: 120px 0;
  background: #fff;
}
.lead__inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}
.lead__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 2;
  letter-spacing: 0.08em;
  color: #1a1a1a;
  margin-bottom: 32px;
}
.lead__text {
  font-size: 0.9rem;
  color: #666;
  line-height: 2.2;
  font-weight: 300;
}

/* ===== サービス ===== */
.service { padding: 120px 0; background: #fafafa; }
.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.service__grid--4col {
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.service__card {
  background: #fff;
  overflow: hidden;
  transition: transform 0.4s, box-shadow 0.4s;
}
.service__card:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.08); }
.service__img-wrap {
  height: 260px;
  overflow: hidden;
}
.service__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.service__card:hover .service__img-wrap img { transform: scale(1.06); }
.service__body { padding: 28px 24px 32px; }
.service__card h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: 12px;
  color: #1a1a1a;
  letter-spacing: 0.06em;
}
.service__card p {
  font-size: 0.85rem;
  color: #888;
  line-height: 1.9;
  font-weight: 300;
}

/* ===== 強み ===== */
.strength { padding: 120px 0; background: #fff; }
.strength__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: #e8e8e8;
  border: 1px solid #e8e8e8;
}
.strength__item {
  background: #fff;
  padding: 48px 40px;
  transition: background 0.3s;
}
.strength__item:hover { background: #fafafa; }
.strength__number {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: #bbb;
  margin-bottom: 16px;
  font-weight: 400;
}
.strength__item h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 12px;
  color: #1a1a1a;
  letter-spacing: 0.06em;
}
.strength__item p {
  font-size: 0.85rem;
  color: #888;
  line-height: 1.9;
  font-weight: 300;
}

/* ===== 外構・植栽 ビジュアル訴求 ===== */
.visual-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
}
.visual-feature__img {
  overflow: hidden;
}
.visual-feature__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.visual-feature__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 64px 56px;
  background: #fafafa;
}
.visual-feature__en {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #bbb;
  margin-bottom: 16px;
}
.visual-feature__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.08em;
  color: #1a1a1a;
  margin-bottom: 24px;
}
.visual-feature__text {
  font-size: 0.88rem;
  color: #777;
  line-height: 2.2;
  font-weight: 300;
}

/* ===== 制作実績 ===== */
.works { padding: 120px 0; background: #0a0a0a; }
.works__gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.works__item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
}
.works__item--wide { grid-column: span 2; aspect-ratio: 2 / 1; }
.works__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.4s;
}
.works__item:hover img { transform: scale(1.05); opacity: 0.8; }
.works__caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s, transform 0.4s;
}
.works__item:hover .works__caption { opacity: 1; transform: translateY(0); }
.works__caption h3 {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.works__caption p {
  font-size: 0.75rem;
  opacity: 0.7;
  font-weight: 300;
}

/* ===== お客様の声 ===== */
.voice { padding: 120px 0; background: #fafafa; }
.voice__list { display: flex; flex-direction: column; gap: 0; }
.voice__item {
  padding: 40px 0;
  border-bottom: 1px solid #e8e8e8;
  text-align: center;
}
.voice__item:first-child { border-top: 1px solid #e8e8e8; }
.voice__text {
  font-family: 'Noto Serif JP', serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 2;
  color: #333;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.voice__meta {
  font-size: 0.78rem;
  color: #aaa;
  font-weight: 300;
  letter-spacing: 0.1em;
}
.voice__intro {
  text-align: center;
  font-size: 0.88rem;
  color: #999;
  line-height: 2;
  font-weight: 300;
  margin-bottom: 32px;
}
.voice__note {
  text-align: center;
  font-size: 0.78rem;
  color: #aaa;
  line-height: 2;
  font-weight: 300;
  margin-top: 32px;
}

/* ===== 料金 ===== */
.price { padding: 120px 0; background: #fff; }
.price__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid #e0e0e0;
}
.price__card {
  padding: 48px 32px;
  text-align: center;
  border-right: 1px solid #e0e0e0;
  position: relative;
  transition: background 0.3s;
}
.price__card:last-child { border-right: none; }
.price__card:hover { background: #fafafa; }
.price__card--popular { background: #fafafa; }
.price__badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: #bbb;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.price__card--popular .price__badge { color: #1a1a1a; }
.price__card h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 4px;
  letter-spacing: 0.06em;
}
.price__desc { font-size: 0.8rem; color: #aaa; margin-bottom: 24px; font-weight: 300; }
.price__amount {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 28px;
}
.price__amount span {
  font-family: 'Noto Serif JP', serif;
  font-size: 2.2rem;
  font-weight: 400;
  color: #1a1a1a;
  letter-spacing: 0.02em;
}
.price__features {
  text-align: left;
  margin-bottom: 32px;
  padding: 0;
}
.price__features li {
  padding: 8px 0;
  font-size: 0.82rem;
  color: #777;
  border-bottom: 1px solid #f0f0f0;
  font-weight: 300;
}
.price__features li:last-child { border-bottom: none; }
.price__note {
  text-align: center;
  font-size: 0.8rem;
  color: #aaa;
  line-height: 2;
  margin-top: 40px;
  font-weight: 300;
}

/* ===== ご依頼の流れ ===== */
.flow { padding: 120px 0; background: #fafafa; }
.flow__steps {
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
}
.flow__step {
  flex: 1;
  text-align: center;
  padding: 0 16px;
  position: relative;
}
.flow__step-number {
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1px solid #1a1a1a;
  color: #1a1a1a;
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  font-weight: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.flow__step h3 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.flow__step p {
  font-size: 0.78rem;
  color: #999;
  line-height: 1.7;
  font-weight: 300;
}
.flow__connector {
  position: absolute;
  top: 28px;
  right: -20px;
  width: 40px;
  height: 1px;
  background: #ccc;
}
.flow__step:last-child .flow__connector { display: none; }

/* ===== FAQ ===== */
.faq { padding: 120px 0; background: #fff; }
.faq__list { max-width: 720px; margin: 0 auto; }
.faq__item {
  border-bottom: 1px solid #e8e8e8;
}
.faq__item:first-child { border-top: 1px solid #e8e8e8; }
.faq__item summary {
  padding: 24px 48px 24px 0;
  font-weight: 400;
  cursor: pointer;
  font-size: 0.95rem;
  color: #1a1a1a;
  list-style: none;
  position: relative;
  letter-spacing: 0.04em;
  line-height: 1.7;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 12px; height: 12px;
  border-right: 1px solid #999;
  border-bottom: 1px solid #999;
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s;
}
.faq__item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}
.faq__item p {
  padding: 0 0 24px;
  font-size: 0.85rem;
  color: #888;
  line-height: 2;
  font-weight: 300;
}

/* ===== お問い合わせ ===== */
.contact {
  padding: 120px 0;
  background: #0a0a0a;
  color: #fff;
}
.contact__desc {
  text-align: center;
  color: rgba(255,255,255,0.6);
  margin-bottom: 56px;
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 2;
}
.contact__methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 640px;
  margin: 0 auto;
}
.contact__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 48px 24px;
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  transition: all 0.4s;
}
.contact__card:hover {
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.04);
}
.contact__icon { font-size: 1.5rem; margin-bottom: 16px; opacity: 0.7; }
.contact__icon svg { width: 28px; height: 28px; }
.contact__card h3 {
  font-size: 0.85rem;
  font-weight: 400;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}
.contact__card p {
  font-size: 0.78rem;
  opacity: 0.5;
  margin-bottom: 20px;
  font-weight: 300;
}

/* ===== フッター ===== */
.footer {
  padding: 48px 0;
  background: #050505;
  color: rgba(255,255,255,0.4);
}
.footer__inner { text-align: center; }
.footer__logo {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  display: block;
  margin-bottom: 4px;
  letter-spacing: 0.1em;
}
.footer__brand p {
  font-size: 0.7rem;
  margin-bottom: 20px;
  letter-spacing: 0.1em;
  font-weight: 300;
}
.footer__nav {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}
.footer__nav a { transition: color 0.3s; }
.footer__nav a:hover { color: rgba(255,255,255,0.8); }
.footer__copy { font-size: 0.65rem; letter-spacing: 0.1em; }

/* ===== フェードインアニメーション ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in--delay1 { transition-delay: 0.1s; }
.fade-in--delay2 { transition-delay: 0.2s; }
.fade-in--delay3 { transition-delay: 0.3s; }

/* ===== レスポンシブ ===== */
@media (max-width: 900px) {
  .service__grid, .service__grid--4col { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .strength__grid { grid-template-columns: 1fr; }
  .works__gallery { grid-template-columns: repeat(2, 1fr); }
  .works__item--wide { grid-column: span 2; }
  .price__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    border: none;
  }
  .price__card {
    border-right: none;
    border-bottom: 1px solid #e0e0e0;
  }
  .price__card:last-child { border-bottom: none; }
}

@media (max-width: 768px) {
  .sp-only { display: inline; }

  /* ヘッダー */
  .header { background: rgba(0,0,0,0.3); }
  .header.is-scrolled { background: rgba(255,255,255,0.97); }
  .header__inner { height: 64px; padding: 0 20px; }
  .header__logo-main { font-size: 1.2rem; }
  .header__nav {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,10,10,0.97);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s;
    z-index: 999;
  }
  .header__nav.is-open { opacity: 1; pointer-events: auto; }
  .header__nav-list {
    flex-direction: column;
    gap: 28px;
    font-size: 0.9rem;
  }
  .header__nav-list a { color: rgba(255,255,255,0.8) !important; }
  .header__nav-list a:hover { color: #fff !important; }
  .header__nav-list .btn { color: #fff !important; border-color: rgba(255,255,255,0.4) !important; }
  .header__hamburger {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
  }
  .header__hamburger span {
    display: block;
    width: 22px;
    height: 1px;
    background: #fff;
    transition: all 0.3s;
  }
  .header.is-scrolled .header__hamburger span { background: #1a1a1a; }
  .header__hamburger.is-active span { background: #fff !important; }
  .header__hamburger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .header__hamburger.is-active span:nth-child(2) { opacity: 0; }
  .header__hamburger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* ヒーロー */
  .hero { min-height: 100vh; }
  .hero__title { font-size: 1.8rem; letter-spacing: 0.08em; }
  .hero__en { font-size: 0.6rem; }
  .hero__desc { font-size: 0.85rem; }
  .hero__actions { flex-direction: column; align-items: center; }
  .hero__actions .btn { width: 260px; }

  .service__grid, .service__grid--4col { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
  .visual-feature { grid-template-columns: 1fr; }
  .visual-feature__img { max-height: 300px; }
  .visual-feature__body { padding: 48px 24px; }
  .visual-feature__title { font-size: 1.3rem; }

  /* セクション */
  .lead, .service, .strength, .works, .price, .flow, .faq, .contact, .voice { padding: 80px 0; }
  .section-header { margin-bottom: 48px; }
  .section-header__ja { font-size: 1.4rem; }
  .lead__title { font-size: 1.2rem; }

  /* 制作実績 */
  .works__gallery { grid-template-columns: 1fr; }
  .works__item--wide { grid-column: span 1; }
  .works__item { aspect-ratio: 4 / 3; }

  /* 依頼の流れ */
  .flow__steps { flex-direction: column; align-items: center; gap: 32px; }
  .flow__connector {
    position: static;
    width: 1px;
    height: 24px;
    margin: 0 auto;
  }
  .flow__step { padding: 0; }

  /* お問い合わせ */
  .contact__methods { grid-template-columns: 1fr; max-width: 320px; }
}