:root {
  /* 背景・文字（暖色オフホワイト基調） */
  --bg:        #f6f4ef;
  --bg-2:      #ece7de;
  --ink:       #14202c;
  --ink-2:     #5a6573;
  --line:      #ddd6c9;

  /* 差し色＝暗めネイビー */
  --navy:      #102438; /* 主役（ボタン・ラベル・線） */
  --navy-deep: #081521; /* 最暗（ヒーロー被せ・暗バンド・フッター） */
  --navy-soft: #16314a;
  --navy-mid:  #1c3a57;
  --on-navy:   #eaf0f6;
  --on-navy-2: #9fb2c4;
  --navy-hair: rgba(255,255,255,.14);

  --serif: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  --sans:  "Zen Kaku Gothic New", -apple-system, "Hiragino Kaku Gothic ProN", sans-serif;

  --maxw: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
/* 固定ヘッダー分、ページ内リンクの着地位置を下げる（ずれ防止） */
[id] { scroll-margin-top: 88px; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.wrap { width: min(92%, var(--maxw)); margin-inline: auto; }

/* 共通：英字ラベル＋和文ラベル */
.eyebrow {
  font-family: var(--serif);
  letter-spacing: .35em;
  font-size: .72rem;
  font-weight: 500;
  color: var(--navy-mid);
  text-transform: uppercase;
}
.label-jp {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: .18em;
}
.en {
  display: block;
  font-family: var(--serif);
  letter-spacing: .4em;
  font-size: .7rem;
  color: var(--navy-mid);
  text-transform: uppercase;
  margin-bottom: .9rem;
}
.sec-head { margin-bottom: 3rem; }
.sec-head .en { margin-bottom: .9rem; }
.sec-head h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  line-height: 1.5;
  letter-spacing: .04em;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 700; }

/* ボタン（角丸ゼロ・差し色ネイビー） */
.btn {
  display: inline-flex; align-items: center; gap: .8em;
  font-family: var(--sans);
  font-weight: 500;
  letter-spacing: .12em;
  font-size: .9rem;
  padding: 1.05em 2.4em;
  background: var(--navy);
  color: var(--on-navy);
  border: 1px solid var(--navy);
  transition: background .25s, color .25s, gap .25s;
  position: relative; overflow: hidden;
}
/* ホバーで光が斜めに走る */
.btn::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.22) 50%, transparent 60%);
  transform: translateX(-130%);
}
.btn:hover::after { transform: translateX(130%); transition: transform .7s ease; }
.btn:hover { background: var(--navy-deep); gap: 1.3em; }
.btn .arrow { transition: transform .25s; }
.btn:hover .arrow { transform: translateX(4px); }
.btn--ghost { background: transparent; color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: var(--on-navy); }
.btn--on-dark { border-color: var(--navy-hair); background: transparent; color: var(--on-navy); }
.btn--on-dark:hover { background: var(--on-navy); color: var(--navy-deep); }

.textlink {
  display: inline-flex; align-items: center; gap: .6em;
  font-size: .9rem; letter-spacing: .1em;
  border-bottom: 1px solid currentColor;
  padding-bottom: .25em;
  color: var(--navy-mid);
  transition: gap .25s;
}
.textlink:hover { gap: 1em; }

/* =========================== ヘッダー =========================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem clamp(1rem, 4vw, 2.6rem);
  transition: background .35s, box-shadow .35s, padding .35s;
}
.site-header.scrolled {
  background: rgba(8,21,33,.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--navy-hair);
  padding-block: .8rem;
}
.brand { display: flex; align-items: baseline; gap: .6rem; color: #fff; }
.brand .mark { font-family: var(--serif); font-weight: 700; font-size: 1.25rem; letter-spacing: .12em; }
.brand .sub { font-size: .64rem; letter-spacing: .25em; color: rgba(255,255,255,.75); }
.nav { display: flex; align-items: center; gap: 2rem; }
.nav a {
  color: #fff; font-size: .86rem; letter-spacing: .12em; position: relative;
  opacity: .92;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 1px;
  background: currentColor; transition: width .25s;
}
.nav a:hover::after { width: 100%; }
.nav .nav-cta {
  border: 1px solid rgba(255,255,255,.4); padding: .55em 1.3em; letter-spacing: .14em;
}
.nav .nav-cta:hover { background: #fff; color: var(--navy-deep); }
.nav .nav-cta::after { display: none; }
.nav-toggle { display: none; }

/* =========================== ヒーロー =========================== */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-start; color: #fff; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 60%; animation: kenburns 16s cubic-bezier(.25,.5,.4,1) both; }
/* ケンバーンズ：暗幕が明ける間もゆっくり引き続け、写真が「生きている」印象に */
@keyframes kenburns { from { transform: scale(1.08); } to { transform: scale(1); } }
/* 明るさ変化は「暗幕の不透明度フェード」で実現（画像は静止＝再描画なし＝チラつかない） */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: var(--navy-deep);
  animation: heroReveal 4.6s cubic-bezier(.37,.06,.32,1) both;
}
@keyframes heroReveal { from { opacity: 1; } to { opacity: 0; } }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  /* 中央は元写真の明るさ、周囲だけ薄暗く（ビネット）。上部は文字可読性用の薄スクリム */
  background:
    radial-gradient(125% 115% at 50% 42%, rgba(8,21,33,0) 48%, rgba(8,21,33,.20) 78%, rgba(8,21,33,.52) 100%),
    linear-gradient(180deg, rgba(8,21,33,.30) 0%, rgba(8,21,33,0) 24%);
}
.hero__inner { position: relative; z-index: 2; width: min(92%, var(--maxw)); margin-inline: auto; padding-top: clamp(7.5rem, 20vh, 12rem); padding-bottom: 0; }
.hero .eyebrow { color: rgba(255,255,255,.85); margin-bottom: 1.6rem; }
.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.32;
  letter-spacing: .06em;
  text-shadow: 0 2px 16px rgba(8,21,33,.55), 0 1px 3px rgba(8,21,33,.5);
}
.hero h1 .accent { color: #fff; }
.hero .eyebrow { text-shadow: 0 1px 8px rgba(8,21,33,.5); }
.hero__sub { margin-top: 1.8rem; font-size: clamp(.95rem, 1.8vw, 1.1rem); letter-spacing: .08em; color: rgba(255,255,255,.95); font-weight: 400; text-shadow: 0 1px 10px rgba(8,21,33,.6); }
.hero__scroll {
  position: absolute; left: 50%; bottom: 1.8rem; transform: translateX(-50%); z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: .7rem;
  font-family: var(--serif); font-size: .62rem; letter-spacing: .35em; color: rgba(255,255,255,.8);
}
.hero__scroll .line { width: 1px; height: 54px; background: rgba(255,255,255,.6); animation: scrolldown 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes scrolldown { 0%,100%{transform:scaleY(.3);opacity:.4} 50%{transform:scaleY(1);opacity:1} }

/* 文字の順次フェードアップ（画像が少し明るくなった頃に出る） */
@keyframes heroTextUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
@keyframes heroFade   { from { opacity: 0; } to { opacity: 1; } }
.hero .eyebrow { animation: heroTextUp .95s cubic-bezier(.2,.6,.2,1) 1.3s both; }
.hero h1       { animation: heroTextUp 1.05s cubic-bezier(.2,.6,.2,1) 1.65s both; }
.hero__sub     { animation: heroTextUp .95s cubic-bezier(.2,.6,.2,1) 2.1s both; }
.hero__scroll  { animation: heroFade .9s ease-out 2.7s both; } /* transformは基底のtranslateX(-50%)を保持 */

/* =========================== 想い（暗バンド） =========================== */
.philosophy { background: var(--navy-deep); color: var(--on-navy); padding: clamp(5rem, 12vh, 9rem) 0; overflow: hidden; }
.philosophy .grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: center; }
.philosophy .figure { position: relative; }
.philosophy .figure img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.philosophy .figure .vlabel {
  position: absolute; top: 1.4rem; left: -1.1rem;
  writing-mode: vertical-rl; font-family: var(--serif); letter-spacing: .3em;
  font-size: .8rem; color: var(--on-navy-2);
  background: var(--navy-deep); padding: .8rem .35rem;
}
.philosophy .en { color: var(--on-navy-2); }
.philosophy h2 { color: #fff; font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.55; margin-bottom: 1.8rem; }
.philosophy h2 em { font-style: normal; color: #cdb78a; } /* 夕日を想わせる差し（ごく僅か） */
.philosophy p { color: var(--on-navy-2); margin-bottom: 2.2rem; }

/* =========================== 強み =========================== */
.strength { padding: clamp(5rem, 12vh, 9rem) 0; }
.strength .grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: center; }
.strength .figure img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.strength-h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); line-height: 1.5; letter-spacing: .04em; }
.strength p { color: var(--ink-2); margin: 1.6rem 0 2.2rem; }
.strength .points { list-style: none; display: grid; gap: .9rem; margin-top: 1.8rem; }
.strength .points li { display: flex; gap: .9rem; align-items: baseline; font-size: .95rem; }
.strength .points .no { font-family: var(--serif); color: var(--navy-mid); letter-spacing: .1em; min-width: 2.2em; }

/* =========================== 想いバンド（全幅） =========================== */
.creed { position: relative; min-height: 60vh; display: grid; place-items: center; text-align: center; color: #fff; overflow: hidden; }
.creed__bg { position: absolute; inset: 0; }
.creed__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }
.creed__bg::after { content: ""; position: absolute; inset: 0; background: rgba(8,21,33,.55); }
.creed__inner { position: relative; z-index: 2; width: min(90%, 760px); padding: 5rem 0; }
.creed blockquote { font-family: var(--serif); font-size: clamp(1.4rem, 3.4vw, 2.3rem); line-height: 1.8; letter-spacing: .06em; text-shadow: 0 2px 24px rgba(0,0,0,.4); }
.creed .cite { margin-top: 1.6rem; font-size: .8rem; letter-spacing: .25em; color: rgba(255,255,255,.8); }

/* =========================== 商品 =========================== */
.products { padding: clamp(5rem, 12vh, 9rem) 0; background: var(--bg-2); }
.products .sec-head { text-align: center; }
.products .cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.4rem, 2.5vw, 2.2rem); }
.card { background: #fff; border: 1px solid var(--line); transition: transform .45s ease, box-shadow .45s ease; }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(16,36,56,.14); }
.card .thumb { aspect-ratio: 4/3; overflow: hidden; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .thumb img { transform: scale(1.06); }
.card .body { padding: 1.8rem 1.7rem 2rem; }
.card h3 { font-size: 1.3rem; letter-spacing: .06em; margin-bottom: .9rem; }
.card .body p { font-size: .9rem; color: var(--ink-2); line-height: 1.85; }
.products .cta-row { text-align: center; margin-top: 3.4rem; }
.products .note { text-align: center; margin-top: 1.3rem; font-size: .73rem; letter-spacing: .08em; color: var(--ink-2); opacity: .8; }

/* =========================== 受賞 =========================== */
.award-sec { padding: clamp(5rem, 12vh, 9rem) 0; background: #fff; border-block: 1px solid var(--line); }
.award-sec .grid { display: grid; grid-template-columns: .82fr 1fr; gap: clamp(2.5rem, 6vw, 5.5rem); align-items: center; }
.award-sec .figure { margin: 0; }
.award-sec .figure img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border: 1px solid var(--line); }
.award-sec .figure figcaption { margin-top: .9rem; font-size: .78rem; letter-spacing: .06em; color: var(--ink-2); }
.award-sec h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.55; margin-bottom: 1.8rem; }
.award-sec .lead { font-family: var(--serif); font-size: 1.08rem; color: var(--ink); margin-bottom: 1.4rem; }
.award-sec p { color: var(--ink-2); margin-bottom: 1.2rem; }
.award-sec p:last-child { margin-bottom: 0; }

/* =========================== 会社案内 =========================== */
.company { position: relative; padding: clamp(5rem, 12vh, 9rem) 0; overflow: hidden; }
.company .grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.company dl.info { margin: 2.2rem 0 0; border-top: 1px solid var(--line); }
.company dl.info > div { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding: 1rem .2rem; border-bottom: 1px solid var(--line); }
.company dl.info dt { font-family: var(--serif); letter-spacing: .12em; color: var(--navy-mid); font-size: .9rem; }
.company dl.info dd { font-size: .95rem; color: var(--ink); }
.company .aside { display: grid; gap: 1.6rem; }
.company .photo img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.company .greeting { background: var(--navy-deep); color: var(--on-navy); padding: 2.2rem 2rem; }
.company .greeting p { font-family: var(--serif); line-height: 1.95; letter-spacing: .04em; font-size: 1rem; }
.company .greeting .by { margin-top: 1.3rem; font-size: .82rem; letter-spacing: .18em; color: var(--on-navy-2); }
.company .award { display: flex; gap: 1.2rem; align-items: center; border: 1px solid var(--line); padding: 1rem; background: #fff; }
.company .award img { width: 84px; height: 104px; object-fit: cover; flex: none; }
.company .award .cap .t { font-family: var(--serif); letter-spacing: .1em; font-size: .95rem; }
.company .award .cap .s { font-size: .78rem; color: var(--ink-2); margin-top: .35rem; }

/* =========================== フッター =========================== */
.site-footer { background: var(--navy-deep); color: var(--on-navy-2); padding: clamp(3.5rem, 8vh, 5.5rem) 0 2.5rem; }
.site-footer .top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; padding-bottom: 3rem; border-bottom: 1px solid var(--navy-hair); }
.site-footer .brand-block .mark { font-family: var(--serif); color: #fff; font-size: 1.5rem; letter-spacing: .12em; }
.site-footer .brand-block .sub { font-size: .66rem; letter-spacing: .26em; margin-top: .3rem; }
.site-footer .brand-block p { margin-top: 1.3rem; font-size: .86rem; line-height: 1.9; }
.site-footer h4 { color: #fff; font-family: var(--serif); font-size: .92rem; letter-spacing: .16em; margin-bottom: 1.2rem; font-weight: 500; }
.site-footer ul { list-style: none; display: grid; gap: .8rem; }
.site-footer ul a { font-size: .86rem; transition: color .2s; }
.site-footer ul a:hover { color: #fff; }
.site-footer .contact .row { font-size: .86rem; line-height: 1.95; }
.site-footer .contact .row b { color: #fff; font-weight: 500; font-family: var(--serif); letter-spacing: .06em; }
.site-footer .bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-top: 2rem; font-size: .72rem; letter-spacing: .08em; }
.site-footer .bottom .links { display: flex; gap: 1.6rem; }

/* =========================== スクロール演出 =========================== */
/* --reveal-delay は script.js が兄弟内の順番から振る（スタッガー） */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s ease, transform .9s ease; transition-delay: var(--reveal-delay, 0s); }
.reveal.in { opacity: 1; transform: none; }

/* 画像のズーム・セトル出現：フェードしながら等倍に収まる（ヒーローのケンバーンズと同じ言語） */
.reveal.reveal--zoom { opacity: 1; transform: none; }
.reveal--zoom img {
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.1s ease, transform 1.5s cubic-bezier(.22,.6,.2,1);
  transition-delay: var(--reveal-delay, 0s);
}
.reveal--zoom.in img { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .hero::before { animation: none; opacity: 0; }
  .hero .eyebrow, .hero h1, .hero__sub { animation: none; opacity: 1; transform: none; }
  .hero__scroll { animation: none; opacity: 1; } /* transformは基底を保持 */
  .hero__scroll .line { animation: none; }
  .hero__bg img { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .reveal--zoom img { opacity: 1; transform: none; transition: none; }
  .card, .card:hover { transform: none; box-shadow: none; }
  .btn::after { display: none; }
  .btn, .btn .arrow, .textlink { transition: none; }
  .card .thumb img { transition: none; transform: none; }
}

/* =========================== レスポンシブ =========================== */
@media (max-width: 900px) {
  .nav { gap: 1.2rem; }
  .philosophy .grid, .strength .grid, .company .grid, .award-sec .grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .award-sec .figure { max-width: 340px; }
  .philosophy .figure img { aspect-ratio: 3/2; }
  .strength .figure { order: -1; }
  .products .cards { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .company .aside { order: -1; }
}
@media (max-width: 720px) {
  /* fixedメニューの基準を画面全体に保つ */
  .site-header.scrolled { backdrop-filter: none; }
  /* モバイルナビ */
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(78%, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 2rem;
    background: var(--navy-deep); padding: 2rem 2.2rem;
    transform: translateX(100%); transition: transform .35s ease;
  }
  .nav.open { transform: none; }
  .nav a { font-size: 1rem; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 6px; z-index: 60;
    width: 30px; background: none; border: 0; cursor: pointer; padding: 4px;
  }
  .nav-toggle span { height: 2px; background: #fff; transition: transform .3s, opacity .3s; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .site-footer .top { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer .bottom { flex-direction: column; align-items: flex-start; }
  .hero__inner { padding-top: 6.5rem; }
}