:root{
  /* Apple-ish neutrals */
  --bg:#f5f5f7;
  --bg2:#ffffff;
  --txt:#111113;
  --muted:#6e6e73;

  --line: rgba(0,0,0,.10);
  --line2: rgba(0,0,0,.07);

  --shadow: 0 14px 40px rgba(0,0,0,.10);
  --shadow2: 0 10px 24px rgba(0,0,0,.08);

  --radius-lg: 22px;
  --radius-md: 16px;

  --navH: 72px;
  --navH-small: 56px;

  --navAlpha: .72;
  --navAlphaSolid: .92;

  --acc1:#2f7dff;
  --acc2:#00c2a8;
}

/* keep data-theme but make it light */
html[data-theme="corporate"]{
  --bg:#f5f5f7;
  --bg2:#ffffff;
  --txt:#111113;
  --muted:#6e6e73;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  color:var(--txt);
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(47,125,255,.10), transparent 60%),
    radial-gradient(1000px 520px at 80% 0%, rgba(0,194,168,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ===== Global Nav (glass) ===== */
.g-nav{
  position:fixed; inset-inline:0; top:0; z-index:100;
  height:var(--navH);
  display:flex; align-items:center; justify-content:center;

  background: rgba(255,255,255,var(--navAlpha));
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);

  transition: height .28s ease, background-color .28s ease, box-shadow .28s ease;
}
.g-wrap{
  width:100%;
  max-width:min(1380px, 96vw);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:0 10px;
  flex-wrap: nowrap;
}

.brand{
  display:flex; align-items:center; gap:10px;
  color:inherit;
  text-decoration:none;
  white-space:nowrap;
  min-width: 0;
}
.brand img{ height:28px; width:auto; }
.brand .name{
  font-weight:800;
  font-size: clamp(12px,1.9vw,16px);
  max-width: 52vw;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}

.nav-right{ display:flex; align-items:center; gap:14px; flex-wrap: nowrap; }
.nav-links{ display:flex; align-items:center; gap: clamp(16px, 2.8vw, 28px); flex-wrap: nowrap; }

.nav-links > a,
.nav-links > .dd > a{
  font-weight:800;
  font-size:13px;
  padding:7px 10px;
  border-radius:10px;
  border:1px solid transparent;
  color: inherit;
}
.nav-links > a:hover,
.nav-links > .dd:hover > a{
  border-color: var(--line);
  background: rgba(0,0,0,.04);
}

.dd{ position:relative; }
.dd-menu{
  position:absolute;
  top: calc(100% + 10px);
  left:0;
  min-width: 240px;

  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 8px;
  display:none;

  box-shadow: var(--shadow2);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
}
.dd.open .dd-menu{ display:block; }

.dd-menu a{
  display:block;
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 800;
  color: inherit;
}
.dd-menu a:hover{
  background: rgba(0,0,0,.045);
}

.lang-switch{ display:flex; gap:8px; }
.lang-switch a{
  border:1px solid var(--line);
  padding:6px 10px;
  border-radius:10px;
  font-weight:800;
  color: inherit;
  background: rgba(255,255,255,.55);
}
.lang-switch a:hover{ background: rgba(255,255,255,.95); }

.nav-cta{
  display:inline-flex; align-items:center; gap:.55em;
  padding:10px 12px;
  border-radius: 12px;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(135deg, var(--acc1), var(--acc2));
  box-shadow: 0 10px 22px rgba(47,125,255,.20);
}
.tel-cta{ display:none; }
.sp-toggle{ display:none; }

.g-nav.shrink{
  height: var(--navH-small);
  background: rgba(255,255,255,var(--navAlphaSolid));
  box-shadow: 0 10px 22px rgba(0,0,0,.08);
}

/* ===== Mobile menu (drawer) ===== */
.drawer{ display:none; }

@media (max-width: 960px){
  .nav-links, .lang-switch, .nav-cta{ display:none; }
  .tel-cta{ display:inline-flex; }
  .sp-toggle{ display:inline-flex; align-items:center; gap:6px; }

  .tel-cta, .sp-toggle button{
    white-space: nowrap;
    word-break: keep-all;
  }
  .sp-toggle, .tel-cta{ flex: 0 0 auto; }

  .drawer{
    position:fixed; inset:0;
    background: rgba(0,0,0,.20);
    z-index: 90;
    display:none;
  }
  .drawer-panel{
    position:fixed;
    top: calc(var(--navH-small) + 8px);
    right:0;
    height: calc(100% - (var(--navH-small) + 8px));
    width: min(86vw, 330px);

    background: rgba(255,255,255,.96);
    border-left: 1px solid var(--line);
    box-shadow: -20px 0 40px rgba(0,0,0,.12);

    padding: 14px;
    overflow:auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;

    transform: translateX(100%);
    transition: transform .28s ease;
    border-top-left-radius: 18px;
    border-bottom-left-radius: 18px;
  }
  .drawer.show{ display:block; }
  .drawer.show .drawer-panel{ transform: translateX(0); }

  .drawer a{
    display:block;
    padding: 14px 12px;
    border-bottom: 1px solid var(--line2);
    color: inherit;
  }

  .drawer .close{
    position: sticky;
    top: 0;
    padding: 6px 0 10px;
    margin-bottom: 8px;
    background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.82));
    z-index: 1;
    text-align: right;
  }
  .drawer .close button{
    border: 1px solid var(--line);
    background: rgba(0,0,0,.03);
    color: inherit;
    padding: 8px 10px;
    border-radius: 10px;
    font-weight: 900;
  }

  .drawer .group-title{
    margin: 8px 6px 4px;
    color: var(--muted);
    font-weight: 900;
    font-size: 12px;
    letter-spacing: .02em;
  }

  .acc-head{
    display:flex; align-items:center; justify-content:space-between;
    gap:8px; margin:6px 0 2px;
  }
  .acc-link{
    display:inline-flex; align-items:center;
    padding: 12px 10px;
    border:1px solid var(--line);
    border-radius: 12px;
    background: rgba(0,0,0,.03);
    font-weight: 900;
    flex: 1 1 auto;
  }
  .acc-btn{
    width: 40px; height: 40px;
    display:inline-flex; align-items:center; justify-content:center;
    border:1px solid var(--line);
    border-radius: 12px;
    background: rgba(0,0,0,.03);
    color: inherit;
    font-weight: 900;
  }
  .acc-btn .chev{ transition: transform .2s ease; }
  .acc-btn[aria-expanded="true"] .chev{ transform: rotate(90deg); }
  .acc-panel{ display:none; }
  .acc-panel.open{ display:block; }
  .acc-panel a{ padding-left: 18px; }
}

.sp-toggle button{
  background: rgba(0,0,0,.03);
  border: 1px solid var(--line);
  color: inherit;
  padding: 8px 10px;
  border-radius: 12px;
  font-weight: 900;
}

/* ===== Hero ===== */
html{ scroll-padding-top: var(--navH); }
@media (max-width:960px){ html{ scroll-padding-top: var(--navH-small); } }

.hero{
  padding-top: calc(var(--navH) + 26px);
  min-height: 38svh;
  display:grid;
  place-items:center;
  border-bottom: 1px solid var(--line);

  /* 画像がくっきり：白オーバーレイを薄め */
  background:
    linear-gradient(180deg, rgba(245,245,247,.58), rgba(245,245,247,.72)),
    url('https://www.nikko-kikai.co.jp/img/mecha_a.png') center/cover no-repeat;

  position: relative;
  overflow: hidden;
}
@media (max-width:960px){
  .hero{ padding-top: calc(var(--navH-small) + 20px); }
}

/* “光”は弱めて、コントラストを潰さない */
.hero::after{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(120% 80% at 50% -10%, rgba(47,125,255,.14) 0%, transparent 55%);
  opacity: .28;
  pointer-events:none;
}

.neon-lines{ display:none; } /* Apple寄せでOFF */

.hero-inner{ text-align:center; position: relative; z-index: 1; }
.hero .title{
  margin:0;
  font-size: clamp(24px, 4.2vw, 42px);
  font-weight: 900;
  letter-spacing: .02em;
}
.hero .lead{
  margin:.45em 0 0;
  color: var(--muted);
  font-weight: 800;
}

/* ===== Content Grid ===== */
.section{
  max-width: min(1100px, 92vw);
  margin: clamp(28px, 6vw, 72px) auto;
}

.grid{
  display:grid;
  gap: 16px;
  grid-template-columns: repeat(5, 1fr);
}
@media (max-width:1160px){ .grid{ grid-template-columns: repeat(3, 1fr); } }
@media (max-width:760px){ .grid{ grid-template-columns: repeat(1, 1fr); } }

.card{
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line2);
  border-radius: var(--radius-md);
  overflow:hidden;
  box-shadow: 0 10px 24px rgba(0,0,0,.08);
  transform: translateY(0);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  position: relative;
}
.card:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(0,0,0,.10);
}

.card img{
  width:100%;
  height: clamp(160px, 22vw, 210px);
  object-fit: cover;
  object-position: center;
  transform: scale(1);
  transition: transform .35s ease;
}
.card:hover img{ transform: scale(1.03); }

.card-body{ padding: 14px 14px 16px; }
.card-title{
  margin: 0 0 6px;
  font-weight: 900;
  letter-spacing: .01em;
}
.card-title a{ color: inherit; }

/* Read More：黒文字・下線なし・ボックス無し（要望反映） */
.card-more{
  margin-top: 6px;
  font-weight: 900;
  color: var(--txt);
}
.card-more a{
  color: var(--txt);
  text-decoration: none;
  display: inline;
  padding: 0;
  border: none;
  background: transparent;
}
.card-more a:hover,
.card-more a:focus-visible{
  color: var(--txt);
  text-decoration: none;
}

/* Footer */
footer{
  color: var(--muted);
  text-align:center;
  padding: 42px 12px 64px;
}