:root{
  --txt:#e9eef6; --muted:#a9b3c3;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius-lg: 20px;
  --navH: 72px; --navH-small: 56px;
  --navAlpha: .22; --navAlphaSolid: .86;
}
html[data-theme="corporate"]{ --bg1:#0b1020; --bg2:#0f1b36; --acc1:#3ad7bd; --acc2:#6aa4ff; --navBg: rgba(0,0,0,var(--navAlpha)); --navBgSolid: rgba(6,10,20,var(--navAlphaSolid)); }
*{box-sizing:border-box}
html,body{height:100%} body{margin:0;color:var(--txt);background:linear-gradient(180deg,var(--bg1),var(--bg2))}
a,a:visited,a:hover,a:active{color:#fff !important; text-decoration:none !important}

/* Fixed Global Nav (ported) */
.g-nav{ position:fixed; inset-inline:0; top:0; z-index:100; height:var(--navH);
  display:flex; align-items:center; justify-content:center; background:var(--navBg);
  border-bottom:1px solid rgba(255,255,255,.18); backdrop-filter:saturate(115%) blur(6px);
  transition: height .28s ease, background-color .28s ease; }
.g-wrap{ width:100%; max-width:min(1380px, 96vw); display:flex; align-items:center; justify-content:space-between; gap:20px; padding:0 10px; }
.brand{ display:flex; align-items:center; gap:10px; color:#fff; text-decoration:none; white-space:nowrap; }
.brand img{ height:28px; width:auto; }
.brand .name{ font-weight:800; font-size:clamp(12px,1.9vw,16px) }

.nav-right{ display:flex; align-items:center; gap:18px; }
.nav-links{ display:flex; align-items:center; gap: clamp(18px, 3.2vw, 32px); }
.nav-links > a, .nav-links > .dd > a{ font-weight:800; font-size:13px; padding:6px 8px; border-radius:8px; border:1px solid transparent }
.nav-links > a:hover, .nav-links > .dd:hover > a{ border-color:rgba(255,255,255,.2); background:rgba(255,255,255,.06) }

.dd{ position:relative }
.dd-menu{ position:absolute; top: calc(100% + 8px); left:0; min-width:240px; background:var(--navBgSolid);
  border:1px solid rgba(255,255,255,.14); border-radius:12px; padding:8px; display:none; box-shadow:var(--shadow) }
.dd.open .dd-menu{ display:block }
.dd-menu a{ display:block; padding:10px 12px; border-radius:10px; font-weight:800 }
.dd-menu a:hover{ background:rgba(255,255,255,.06) }

.lang-switch{ display:flex; gap:8px }
.lang-switch a{ border:1px solid rgba(255,255,255,.2); padding:6px 10px; border-radius:8px; font-weight:800 }
.nav-cta{ display:inline-flex; align-items:center; gap:.6em; padding:10px 12px; border-radius:12px;
  background:linear-gradient(135deg,var(--acc1),var(--acc2)); color:#071018; font-weight:800; box-shadow:var(--shadow) }

.sp-toggle{ display:none }
.tel-cta{ display:none }

.g-nav.shrink{ height:var(--navH-small); background:var(--navBgSolid); }

/* === Fix: 電話とメニューをトップページindexと同じにする === */
.g-wrap{ flex-wrap: nowrap; }
.nav-right{ flex-wrap: nowrap; }
.nav-links{ flex-wrap: nowrap; }

@media (max-width: 960px){
  .sp-toggle{
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
}
/* 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 }
  .drawer{ position:fixed; inset:0; background:rgba(0,0,0,.45); z-index:99; display:none }
  .drawer-panel{
    position:fixed; top:0; right:0; height:100%; width:min(86vw,320px);
    background:var(--navBgSolid); border-left:1px solid rgba(255,255,255,.16);
    padding:16px; overflow:auto; box-shadow:-20px 0 40px rgba(0,0,0,.35);
    padding-bottom:max(16px,env(safe-area-inset-bottom));
  }
  .drawer.show{ display:block }
  .drawer a{ display:block; padding:14px 12px; border-bottom:1px solid rgba(255,255,255,.12) }
  .drawer .group-title{ margin:6px 4px 0; color:#cfe1ff; font-weight:800; font-size:13px }
  /* Accordion head: link + triangle */
  .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 rgba(255,255,255,.18); border-radius:10px; background:rgba(255,255,255,.06); font-weight:800 }
  .acc-btn{ width:38px; height:38px; display:inline-flex; align-items:center; justify-content:center; border:1px solid rgba(255,255,255,.18); border-radius:10px; background:rgba(255,255,255,.06) }
  .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 }

  /* --- スマホ時: 電話・メニューの改行防止 --- */
  .tel-cta,
  .sp-toggle button{
    white-space: nowrap;
    word-break: keep-all;
  }
  .sp-toggle,
  .tel-cta{
    flex: 0 0 auto;  /* 幅の圧縮を防ぐ */
  }

  /* --- iPhone調整: ブランド名が「電話」「メニュー」と重ならないようにする --- */
  .brand{ min-width: 0; }
  .brand .name{
    display:block;
    max-width:52vw;        /* 必要に応じて 48〜56vw で微調整可 */
    overflow:hidden;
    white-space:nowrap;
    text-overflow:ellipsis;
  }
}

/* Hero & content */
html{ scroll-padding-top: var(--navH) }
@media (max-width:960px){ html{ scroll-padding-top: var(--navH-small) } }
.hero{ padding-top: calc(var(--navH) + 28px); min-height: 38svh; display:grid; place-items:center;
  background:linear-gradient(180deg, rgba(15,27,54,.7), rgba(15,27,54,.2)), url('https://www.nikko-kikai.co.jp/img/mecha_a.png') center/cover no-repeat; border-bottom:1px solid rgba(255,255,255,.12) }
@media (max-width:960px){ .hero{ padding-top: calc(var(--navH-small) + 20px) } }
.hero .title{ margin:0; font-size: clamp(22px, 4vw, 36px); font-weight:900 }
.hero .lead{ margin:.4em 0 0; color:var(--muted) }

.section{ max-width:min(1100px, 92vw); margin: clamp(28px, 6vw, 72px) auto }
.grid{ display:grid; gap:14px; grid-template-columns: repeat(4, 1fr) }
@media (max-width:1160px){ .grid{ grid-template-columns: repeat(2, 1fr) } }
@media (max-width:760px){ .grid{ grid-template-columns: repeat(1, 1fr) } }
.card{ background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.15); border-radius:16px; overflow:hidden; box-shadow:var(--shadow) }
.card img{ width:100%; height:auto; display:block }
.card-body{ padding:14px }
.card-title{ font-weight:800; margin:0 0 6px }
.card-more{ opacity:.9; font-weight:800 }
footer{ color:#9fb0c0; text-align:center; padding:40px 12px 60px }

/* Mobile button, drawer polish, hero effects, card glow & submenu glow */
.sp-toggle button{
  background: transparent;
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  padding: 8px 10px;
  border-radius: 10px;
  font-weight: 800;
}
@media (max-width: 960px){
  .drawer{ background: rgba(0,0,0,.45); }
  .drawer-panel{
    right:0; left:auto; width:min(86vw,320px);
    transform: translateX(100%); transition: transform .28s ease;
    padding-top:max(16px,env(safe-area-inset-top));
    padding-right:max(16px,env(safe-area-inset-right));
    padding-bottom:max(16px,env(safe-area-inset-bottom));
    box-shadow:-20px 0 40px rgba(0,0,0,.35);
    -webkit-overflow-scrolling: touch; overscroll-behavior: contain;
  }
  .drawer.show .drawer-panel{ transform: translateX(0); }
  .drawer .close{ position:sticky; top:0; padding:6px 0 8px; margin-bottom:8px;
    background: linear-gradient(180deg, rgba(6,10,20,.95), rgba(6,10,20,.75)); z-index:1; text-align:right; }
  .drawer .close button{
    border: 1px solid rgba(255,255,255,.25);
    background: transparent; color:#fff; padding:8px 10px; border-radius:8px;
  }
  .drawer a{ display:block; }
  .acc-panel{ display:none } .acc-panel.open{ display:block }
  .acc-panel a{ padding-left:18px; border-bottom:1px solid rgba(255,255,255,.12); border-radius:0 }
  .acc-panel a:last-child{ border-bottom:0 }
}

/* Hero scanlines + neon lines + gradient */
.hero{ position:relative; overflow:hidden }
.hero::before{
  content:""; position:absolute; inset:0;
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,0.06) 0px, rgba(255,255,255,0.06) 1px, transparent 2px, transparent 4px);
  mix-blend-mode: overlay; opacity:.18; pointer-events:none;
}
.hero::after{ content:""; position:absolute; inset:0; background: radial-gradient(120% 80% at 50% -10%, rgba(0,0,0,0) 0%, rgba(0,0,0,.35) 60%, rgba(0,0,0,.55) 100%); pointer-events:none; }
.neon-lines{ position:absolute; inset:0; pointer-events:none; overflow:hidden }
.neon-lines::before, .neon-lines::after{
  content:""; position:absolute; width:140%; height:2px; left:-20%;
  background: linear-gradient(90deg, transparent, rgba(61,215,189,.0), rgba(61,215,189,.9), rgba(106,164,255,.9), rgba(61,215,189,.0), transparent);
  filter: drop-shadow(0 0 8px rgba(106,164,255,.9)); opacity:.55; animation:sweep 5.2s linear infinite;
}
.neon-lines::after{ top:75%; animation-delay:2.2s; opacity:.4 }
@keyframes sweep{ 0%{ transform: translateY(-10%) rotate(2deg) } 100%{ transform: translateY(110%) rotate(2deg) } }
@media (prefers-reduced-motion: reduce){ .neon-lines::before, .neon-lines::after{ animation:none; opacity:.25 } }
/* Animated gradient overlay */
.hero::before{
  background:linear-gradient(120deg,#3ad7bd55,#6aa4ff55,#3ad7bd55); background-size:200% 200%; animation:gradmove 12s ease infinite; mix-blend-mode:overlay;
}
@keyframes gradmove{ 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }

/* Card hover glow/shimmer */
.card{ position:relative; overflow:hidden }
.card img{ transition: transform .4s ease }
.card:hover img{ transform: scale(1.03) }
.card::before{
  content:""; position:absolute; inset:0; border-radius:16px;
  background: linear-gradient(135deg, rgba(61,215,189,.0), rgba(61,215,189,.35), rgba(106,164,255,.35), rgba(61,215,189,.0));
  opacity:0; transform: scale(1.02); transition: opacity .25s ease, transform .25s ease; pointer-events:none;
}
.card:hover::before{ opacity:.85; transform: scale(1.0) }
.card::after{
  content:""; position:absolute; top:-100%; bottom:-100%; left:-40%; width:40%;
  transform: translateX(-120%) rotate(20deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  mix-blend-mode: screen; opacity:0; pointer-events:none;
}
.card:hover::after{ animation: cardShimmer 1.2s ease; opacity:1 }
@keyframes cardShimmer{ 0%{ transform: translateX(-120%) rotate(20deg); opacity:0 } 10%{ opacity:.7 } 100%{ transform: translateX(220%) rotate(20deg); opacity:0 } }

/* Submenu glow (desktop & drawer) */
.dd-menu a, .drawer .acc-panel a{ position:relative; overflow:hidden }
.dd-menu a::before, .drawer .acc-panel a::before{
  content:""; position:absolute; inset:-1px; border-radius:10px;
  background: linear-gradient(135deg, rgba(61,215,189,.0), rgba(61,215,189,.30), rgba(106,164,255,.30), rgba(61,215,189,.0));
  opacity:0; transition: opacity .18s ease; pointer-events:none;
}
.dd-menu a::after, .drawer .acc-panel a::after{
  content:""; position:absolute; top:-120%; bottom:-120%; left:-30%; width:40%;
  transform: translateX(-120%) rotate(20deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  mix-blend-mode: screen; opacity:0; pointer-events:none;
}
.dd-menu a:hover::before, .drawer .acc-panel a:hover::before{ opacity:.7 }
.dd-menu a:hover::after, .drawer .acc-panel a:hover::after{ opacity:1; animation: submenuShimmer 1.0s ease }
@keyframes submenuShimmer{ 0%{ transform: translateX(-120%) rotate(20deg); opacity:0 } 10%{ opacity:.7 } 100%{ transform: translateX(220%) rotate(20deg); opacity:0 } }

/* === Fix 1: unify card image heights (gate MC was taller) === */
.card img{
  width: 100%;
  height: clamp(160px, 26vw, 220px); /* responsive fixed height */
  object-fit: cover;                 /* crop to fill uniformly */
  object-position: center;
}

/* === Fix 2: mobile drawer accordion header boxes unified === */
@media (max-width: 960px){
  .acc-head{ gap:8px; }
  .acc-link{
    display: inline-flex; align-items: center; justify-content: flex-start;
    min-height: 42px;                  /* unify height */
    padding: 8px 10px;                 /* tighter padding */
    border-radius: 10px;
  }
  .acc-btn{
    width: 42px; height: 42px;         /* unify size with link height */
    border-radius: 10px;
    color: #fff;                        /* arrow color */
  }
  .acc-btn .chev{ color:#fff; }         /* ensure white triangle */
}

/* Optional: make desktop submenu items a bit more even too */
.dd-menu a{ min-height: 40px; display:flex; align-items:center; }

/* === Unify width of accordion header boxes in mobile drawer === */
@media (max-width: 960px){
  .acc-head{ display:flex; }
  .acc-link, .acc-btn{
    flex: 1 1 auto;               /* share available space */
  }
  .acc-link{ flex: 1 1 100%; }    /* take up remaining space */
  .acc-btn{ flex: 0 0 42px; }     /* fixed width for button */
}

/* Drawerを固定ナビの下から開始（SP） */
@media (max-width: 960px){
  .drawer{ z-index: 90 !important; } /* .g-navは100想定 */
  .drawer-panel{
    top: var(--navH-small, 56px) !important;
    height: calc(100% - var(--navH-small, 56px)) !important;
    padding-top: max(8px, env(safe-area-inset-top));
  }
}

/* --- Hover glow for top-level nav items (desktop) --- */
.nav-links > .dd > a{
  position: relative;
  overflow: hidden;
}
.nav-links > .dd > a::before{
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:10px;
  background: linear-gradient(135deg,
    rgba(61,215,189,0),
    rgba(61,215,189,.35),
    rgba(106,164,255,.35),
    rgba(61,215,189,0));
  opacity:0;
  transition: opacity .18s ease;
  pointer-events:none;
}
.nav-links > .dd:hover > a::before{ opacity:.75; }
.nav-links > .dd > a::after{
  content:"";
  position:absolute;
  top:-120%; bottom:-120%; left:-30%;
  width:40%;
  transform: translateX(-120%) rotate(20deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  mix-blend-mode: screen;
  opacity:0;
  pointer-events:none;
}
.nav-links > .dd:hover > a::after{
  opacity:1;
  animation: navShimmer 1.0s ease;
}
@keyframes navShimmer{
  0%{ transform: translateX(-120%) rotate(20deg); opacity:0; }
  10%{ opacity:.7; }
  100%{ transform: translateX(220%) rotate(20deg); opacity:0; }
}

/* --- Hover glow for drawer top-level links (SP) --- */
@media (max-width: 960px){
  .acc-link{
    position: relative;
    overflow: hidden;
  }
  .acc-link::before{
    content:"";
    position:absolute;
    inset:-1px;
    border-radius:10px;
    background: linear-gradient(135deg,
      rgba(61,215,189,0),
      rgba(61,215,189,.30),
      rgba(106,164,255,.30),
      rgba(61,215,189,0));
    opacity:0;
    transition: opacity .18s ease;
    pointer-events:none;
  }
  .acc-link::after{
    content:"";
    position:absolute;
    top:-120%; bottom:-120%; left:-30%;
    width:40%;
    transform: translateX(-120%) rotate(20deg);
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
    mix-blend-mode: screen;
    opacity:0;
    pointer-events:none;
  }
  .acc-link:hover::before{ opacity:.7; }
  .acc-link:hover::after{
    opacity:1;
    animation: drawerShimmer 1.0s ease;
  }
  @keyframes drawerShimmer{
    0%{ transform: translateX(-120%) rotate(20deg); opacity:0; }
    10%{ opacity:.7; }
    100%{ transform: translateX(220%) rotate(20deg); opacity:0; }
  }
}

/* --- Drawer under fixed nav (SP) with a slightly lower start --- */
@media (max-width: 960px){
  .drawer-panel{
    /* start a bit lower than the nav height */
    top: calc(var(--navH-small, 56px) + 8px) !important;
    height: calc(100% - (var(--navH-small, 56px) + 8px)) !important;
  }
}