:root{
  --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: 52px;

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

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

  --nk-sans: "Noto Sans JP", system-ui, -apple-system, "Segoe UI",
             "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

*{ box-sizing:border-box; }
html,body{ height:100%; overflow-x:hidden; }
body{
  margin:0;
  font-family: var(--nk-sans);
  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;
}

img{ max-width:100%; height:auto; display:block; }

/* 黒文字・下線なし（全体統一） */
a, a:visited, a:hover, a:active{
  color: inherit !important;
  text-decoration: none !important;
}

/* ===== 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;
  min-width:0;
  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; min-width:0; }
.nav-links{ display:flex; align-items:center; gap: clamp(16px, 2.8vw, 28px); min-width:0; }

.nav-links > a,
.nav-links > .dd > a{
  font-weight:900;
  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);
}

/* dropdown */
.dd{ position:relative; }
.dd-menu{
  position:absolute;
  top: calc(100% + 10px);
  left:0;
  min-width: 240px;
  max-width: 80vw;
  max-height:min(60vh,520px);
  overflow:auto;
  -webkit-overflow-scrolling:touch;

  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: 900;
  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:900;
  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: 950;
  color: #fff !important;
  background: linear-gradient(135deg, var(--acc1), var(--acc2));
  box-shadow: 0 10px 22px rgba(47,125,255,.20);
  white-space:nowrap;
}
.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);
}
.g-nav.shrink .brand img{ height:24px; }

/* ===== Drawer (SP) ===== */
.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; }
  @media (max-width: 520px){ .brand .name{ display:none; } }

  .sp-toggle button{
    background: rgba(0,0,0,.03);
    border: 1px solid var(--line);
    color: inherit;
    padding: 8px 10px;
    border-radius: 12px;
    font-weight: 950;
    display:inline-flex; align-items:center; line-height:1;
  }

  .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 !important;
    font-weight: 950;
  }

  .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: 950;
  }

  .drawer .group-title{
    margin: 8px 6px 4px;
    color: var(--muted);
    font-weight: 950;
    font-size: 12px;
    letter-spacing: .02em;
  }
}

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

.hero{
  position:relative;
  min-height: 38svh;
  display:grid;
  place-items:center;
  padding-top: calc(var(--navH) + 26px);
  text-align:center;

  /* 霞は薄め＝画像くっきり */
  background:
    linear-gradient(180deg, rgba(245,245,247,.36), rgba(245,245,247,.74)),
    url('https://www.nikko-kikai.co.jp/img/mecha_a.png') center/cover no-repeat;

  border-bottom: 1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(120% 80% at 50% -10%, rgba(47,125,255,.14) 0%, transparent 55%);
  opacity:.24;
  pointer-events:none;
}
.neon-lines{ display:none !important; }

.hero-inner{ position:relative; z-index:1; padding:24px; }
.hero .title{
  margin:0;
  font-size: clamp(24px, 4.2vw, 40px);
  font-weight: 950;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.hero .lead{
  margin:.5em 0 0;
  color: var(--muted);
  font-weight: 900;
}

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

.grid{
  display:grid;
  gap: 14px;
  grid-template-columns: repeat(5, minmax(0,1fr));
}
@media (max-width:1160px){ .grid{ grid-template-columns: repeat(3, minmax(0,1fr)); } }
@media (max-width:760px){ .grid{ grid-template-columns: 1fr; } }

.card{
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line2);
  border-radius: 18px;
  overflow:hidden;
  box-shadow: var(--shadow2);
  position: relative;
}
.card img{
  width:100%;
  height: clamp(150px, 20vw, 210px);
  object-fit: cover;
  object-position: center;
  border-bottom: 1px solid var(--line2);
}
.card-body{ padding: 14px 16px 16px; }
.card-title{
  font-weight: 950;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

/* Read More は “ボックスにしない” */
.card-more{
  margin-top: 8px;
  font-weight: 950;
  color: var(--muted);
}
.card-more a{
  display:inline-flex;
  align-items:center;
  gap:.35em;
  padding:0;
  border:0;
  background: transparent;
  color: var(--muted) !important;
}
.card-more a::after{ content:"→"; opacity:.85; }
.card-more a:hover{ color: var(--txt) !important; }

/* hover: subtle lift */
@media (hover:hover){
  .card:hover{ transform: translateY(-2px); transition: transform .18s ease, box-shadow .18s ease; box-shadow: 0 18px 48px rgba(0,0,0,.12); }
}

footer{
  color: var(--muted);
  text-align:center;
  padding: 40px 12px 60px;
  border-top: 1px solid var(--line2);
}