:root{
  --bg:#0a0a0a;
  --bg-soft:#111111;
  --panel:#151515;
  --line:rgba(255,255,255,.12);
  --text:#f4f4f1;
  --muted:rgba(244,244,241,.68);
  --white:#ffffff;

  /* PCで見た時の見え方を揃える軸 */
  --container-max: 1180px;
  --container-side: 48px;

  /* 共通余白 */
  --section-y: clamp(72px, 7vw, 104px);

  /* 共通文字 */
  --title-lg: clamp(2.4rem, 5vw, 5.8rem);
  --title-md: clamp(1.8rem, 2.8vw, 3rem);
  --text-base: 1rem;
}

*{
  box-sizing:border-box;
}

html,body{
  margin:0;
  padding:0;
}

html{
  overflow-x:hidden;
}

body{
  overflow-x:hidden;
  background:var(--bg);
  color:var(--text);
  font-family:"Yu Gothic","Hiragino Sans","Noto Sans JP",sans-serif;
  line-height:1.7;
  letter-spacing:.02em;
}

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

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

.container{
  width:min(var(--container-max), calc(100% - var(--container-side)));
  margin:0 auto;
}

/* =========================
   Header
========================= */
.site-header{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(0,0,0,.01);
  border-bottom: none;
  box-shadow: none;
  backdrop-filter: blur(2px);
  transition:
    background .28s ease,
    backdrop-filter .28s ease;
}

.site-header.is-scrolled{
  background: rgba(10,10,10,.82);
  border-bottom: none;
  box-shadow: none;
  backdrop-filter: blur(12px);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:78px;
  border-bottom:none;
  box-shadow:none;
  width: min(1400px, calc(100% - 8px));
  margin: 0 auto;
  padding: 0 2px;
}

.logo{
  display:inline-flex;
  align-items:center;
  line-height:1;
  white-space:nowrap;
  flex-shrink:0;
  margin-right:auto;
  transform: translateX(-10px);
}

.logo img{
  display:block;
  height:40px;
  width:auto;
}

.site-nav{
  display:flex;
  align-items:center;
  gap:34px;
  margin-left:auto;
  margin-right:26px;
  flex-wrap:nowrap;
  border-bottom:none;
  box-shadow:none;
}

.site-nav a{
  font-size:.9rem;
  color:var(--muted);
  transition:color .2s ease, opacity .2s ease;
  white-space:nowrap;
}

.site-nav a:hover{
  color:var(--white);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  margin-left:0;
  transform: translateX(10px);
}

.search-btn{
  width:42px;
  height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:none;
  padding:0;
  cursor:pointer;
}

.search-btn svg{
  width:24px;
  height:24px;
  stroke:#fff;
  stroke-width:2;
  fill:none;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:opacity .2s ease, transform .2s ease;
}

.search-btn:hover svg{
  opacity:.75;
  transform:scale(1.04);
}

.header-search{
  max-height:0;
  overflow:hidden;
  border-top:none;
  background:rgba(10,10,10,.95);
  transition:max-height .35s ease, border-color .35s ease;
}

.header-search.is-open{
  max-height:140px;
  border-top:1px solid rgba(255,255,255,.08);
}

.header-search__form{
  display:flex;
  align-items:center;
  gap:12px;
  padding:18px 0;
}

.header-search__input{
  flex:1;
  min-width:0;
  height:52px;
  padding:0 18px;
  background:#111;
  color:var(--text);
  border:1px solid var(--line);
  font:inherit;
}

.header-search__input::placeholder{
  color:rgba(244,244,241,.45);
}

.header-search__submit{
  height:52px;
  padding:0 22px;
  border:1px solid var(--line);
  background:#fff;
  color:#111;
  font:inherit;
  font-weight:600;
  cursor:pointer;
}

/* =========================
   Common
========================= */
main{
  min-height:100vh;
}

.section{
  padding:var(--section-y) 0;
}

.section-head{
  width:min(var(--container-max), calc(100% - var(--container-side)));
  margin:0 auto 28px;
}

.section-head h2{
  font-size:var(--title-md);
  margin:0;
  line-height:1.18;
  font-weight:600;
}

.eyebrow{
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.22em;
  font-size:.78rem;
  margin:0 0 10px;
}

.lead{
  color:var(--muted);
  font-size:var(--text-base);
  max-width:700px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:50px;
  padding:0 22px;
  border:1px solid var(--line);
  background:var(--white);
  color:#111;
  font-weight:600;
  letter-spacing:.08em;
  white-space:nowrap;
}

.btn--light{
  background:transparent;
  color:var(--white);
}

.btn--ghost{
  background:rgba(255,255,255,.06);
  color:var(--white);
}

.grid{
  width:min(var(--container-max), calc(100% - var(--container-side)));
  margin:0 auto;
  display:grid;
  gap:24px;
}

.grid--2{
  grid-template-columns:repeat(2, minmax(0, 1fr));
}

.grid--3{
  grid-template-columns:repeat(3, minmax(0, 1fr));
}

.card,
.product-card,
.journal-card{
  min-width:0;
}

.image-placeholder,
.product-card__image,
.feature-card__image{
  background:
    linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02)),
    #121212;
  display:grid;
  place-items:center;
  color:rgba(255,255,255,.42);
  letter-spacing:.16em;
  font-size:.84rem;
  overflow:hidden;
}

.text-link{
  display:inline-block;
  margin-top:10px;
  color:var(--white);
}

.meta{
  color:var(--muted);
  font-size:.8rem;
  letter-spacing:.12em;
  text-transform:uppercase;
}

.page-hero{
  width:min(var(--container-max), calc(100% - var(--container-side)));
  margin:0 auto;
  padding:140px 0 30px;
}

.page-hero h1{
  font-size:clamp(2rem, 4vw, 4rem);
  line-height:1.08;
  margin:0 0 16px;
}

.page-hero p{
  color:var(--muted);
  max-width:760px;
}

.product-card{
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
}

.product-card__body{
  padding:18px 18px 22px;
}

.journal-card{
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
  padding:24px;
}

.contact-form{
  width:min(860px, calc(100% - var(--container-side)));
  margin:0 auto;
  display:grid;
  gap:18px;
}

.form-group{
  display:grid;
  gap:8px;
}

input,
textarea,
select{
  width:100%;
  background:#111;
  color:var(--text);
  border:1px solid var(--line);
  padding:14px 16px;
  font:inherit;
}

.detail-layout{
  width:min(var(--container-max), calc(100% - var(--container-side)));
  margin:0 auto;
  display:grid;
  grid-template-columns:1.2fr .9fr;
  gap:34px;
}

.thumb-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:16px;
}

.image-placeholder--lg{
  min-height:520px;
}

.detail-info{
  padding-top:10px;
}

.price{
  font-size:1.4rem;
  margin:10px 0 20px;
}

.spec-list{
  padding-left:18px;
  color:var(--muted);
}

.copy-block{
  width:min(860px, calc(100% - var(--container-side)));
  margin:0 auto;
}

.copy-block h2{
  font-size:2rem;
  margin-top:0;
}

/* =========================
   Footer
========================= */
.site-footer{
  border-top:1px solid var(--line);
  padding:28px 0 40px;
  margin-top:40px;
}

.footer-inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
}

.footer-logo{
  font-weight:700;
  letter-spacing:.22em;
  margin:0 0 10px;
}

.footer-copy{
  margin:0;
  color:var(--muted);
}

.footer-links{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}

/* =========================
   Tablet
========================= */
@media (max-width: 1024px){
  :root{
    --container-side: 36px;
  }

  .site-nav{
    gap:22px;
  }
}

.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  padding:0;
  border:none;
  background:transparent;
  cursor:pointer;
  position:relative;
}

.menu-toggle span{
  position:absolute;
  left:50%;
  width:24px;
  height:2px;
  background:#fff;
  transform:translateX(-50%);
  transition:transform .28s ease, top .28s ease;
}

.menu-toggle span:nth-child(1){
  top:14px;
}

.menu-toggle span:nth-child(2){
  top:24px;
}

@media (max-width: 767px){
  :root{
    --container-side: 28px;
    --section-y: 72px;
  }

  .header-inner{
    position:relative;
    min-height:66px;
    padding:12px 0;
    gap:12px;
    flex-wrap:nowrap;
  }

  .logo img{
    height:50px;
  }

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }

  .header-actions{
    margin-left:auto;
    gap:8px;
    position:relative;
    z-index:30;
  }

  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    width:100%;
    margin:0;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:10px 0;
    background:rgba(10,10,10,.98);
    border-top:1px solid rgba(255,255,255,.08);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .25s ease, transform .25s ease, visibility .25s ease;
    z-index:25;
  }

  .site-header.is-menu-open .site-nav{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }

  .site-nav a{
    width:100%;
    padding:14px 28px;
    font-size:.9rem;
    border-bottom:1px solid rgba(255,255,255,.06);
  }

  .site-nav a:last-child{
    border-bottom:none;
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(1){
  top:19px;
  transform:translateX(-50%) rotate(45deg);
}

.site-header.is-menu-open .menu-toggle span:nth-child(2){
  top:19px;
  transform:translateX(-50%) rotate(-45deg);
}

  .header-search__form{
    flex-direction:column;
    align-items:stretch;
  }

  .header-search__submit{
    width:100%;
  }

  .grid--2,
  .grid--3,
  .detail-layout{
    grid-template-columns:1fr;
  }

  .thumb-grid{
    grid-template-columns:repeat(3,1fr);
  }

  .image-placeholder--lg{
    min-height:320px;
  }

  .page-hero{
    padding:120px 0 24px;
  }

  .footer-inner{
    flex-direction:column;
  }
}

.header-search__box{
  position: relative;
  flex: 1;
}

.header-search__suggest{
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 14px 30px rgba(0,0,0,.08);
  display: none;
  z-index: 30;
}

.header-search__suggest.is-open{
  display: block;
}

.header-search__suggest-item{
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  text-decoration: none;
  color: #111;
  border-bottom: 1px solid rgba(0,0,0,.06);
}

.header-search__suggest-item:last-child{
  border-bottom: none;
}

.header-search__suggest-item:hover{
  background: #f7f7f7;
}

.header-search__suggest-type{
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(0,0,0,.45);
  min-width: 72px;
}

.header-search__suggest-label{
  font-size: 14px;
}

/* =========================
   Header mode switch
========================= */

/* TOPだけ透明 */
body.is-home .site-header{
  background: rgba(0,0,0,.01);
  border-bottom: none;
  box-shadow: none;
  backdrop-filter: blur(2px);
}

body.is-home .site-header .site-nav a{
  color: var(--muted);
}

body.is-home .site-header .site-nav a:hover{
  color: var(--white);
}

body.is-home .site-header .search-btn svg{
  stroke: #fff;
}

/* TOPでスクロール後 */
body.is-home .site-header.is-scrolled{
  background: rgba(10,10,10,.82);
  border-bottom: none;
  box-shadow: none;
  backdrop-filter: blur(12px);
}

/* TOP以外は最初から黒ヘッダー */
body.is-subpage .site-header{
  background: rgba(10,10,10,.92);
  border-bottom: 1px solid rgba(255,255,255,.08);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

body.is-subpage .header-inner{
  border-bottom: none;
  box-shadow: none;
}

body.is-subpage .site-nav a{
  color: rgba(255,255,255,.72);
}

body.is-subpage .site-nav a:hover{
  color: #fff;
}

body.is-subpage .search-btn svg{
  stroke: #fff;
}

body.is-subpage .header-search{
  background: rgba(12,12,12,.98);
  border-top: none;
}

body.is-subpage .header-search.is-open{
  border-top: 1px solid rgba(255,255,255,.08);
}

body.is-subpage .header-search__input{
  background: rgba(255,255,255,.04);
  color: #fff;
  border: 1px solid rgba(255,255,255,.12);
}

body.is-subpage .header-search__input::placeholder{
  color: rgba(255,255,255,.42);
}

body.is-subpage .header-search__submit{
  background: #fff;
  color: #111;
  border: 1px solid #fff;
}

/* 検索候補も黒 */
body.is-subpage .header-search__suggest{
  background: #111;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 14px 30px rgba(0,0,0,.35);
}

body.is-subpage .header-search__suggest-item{
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

body.is-subpage .header-search__suggest-item:hover{
  background: rgba(255,255,255,.05);
}

body.is-subpage .header-search__suggest-type{
  color: rgba(255,255,255,.42);
}

body.is-subpage .header-search__suggest-label{
  color: #fff;
}

/* サブページは固定ヘッダー分だけ余白 */
body.is-subpage main{
  padding-top: 78px;
}

@media (max-width: 767px){
  body.is-subpage main{
    padding-top: 66px;
  }
}

/* --- 1. header-innerの余白を調整 --- */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  width: min(1400px, 100%); /* 100%から引かずに100%にする */
  margin: 0 auto;
  padding: 0 20px; /* 2pxだと見切れるため、20px程度に増やす */
  box-sizing: border-box; /* 念のため追加 */
}

/* --- 2. ネガティブな横移動(transform)を解除 --- */
.logo {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
  margin-right: auto;
  transform: translateX(0); /* -10px から 0 に変更 */
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-left: 0;
  transform: translateX(0); /* 10px から 0 に変更 */
}

/* --- 3. スマホ時の調整 --- */
@media (max-width: 767px) {
  .header-inner {
    padding: 0 15px; /* スマホでは少し余白を詰める */
    min-height: 66px;
  }
}