@charset "UTF-8";
/* ============================================================
   NEL innovation 3D — 共通スタイル（header.php / footer.php / 汎用要素 / 夜の海背景）
   design/ 確定HTML（nel-3d.html・ai-kenshu.html）の共通部分を踏襲。
   ページ固有のスタイルは各テンプレートのインライン <style> 側に置く。
   ============================================================ */

:root{
  --sea:#02071a; --sea2:#04102e; --deep:#010512;
  --blue:#0069DF; --navy:#012F7D; --teallight:#3fe6d6; --cyan:#3fd6ff;
  --white:#eaf6ff; --dim:#9fb4d6; --orange:#ff8a3c;
  --line:rgba(90,150,230,.15);
  --gothic:'Zen Kaku Gothic New',sans-serif; --sans:'Noto Sans JP',sans-serif; --en:'Outfit',sans-serif;
  --pad:clamp(20px,5vw,72px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--white);overflow-x:hidden;line-height:1.7;
  background:
    radial-gradient(70% 50% at 82% 2%, rgba(0,105,223,.20) 0%, transparent 55%),
    radial-gradient(60% 55% at 10% 26%, rgba(4,16,46,.9) 0%, transparent 60%),
    radial-gradient(120% 80% at 50% 118%, rgba(63,230,214,.09) 0%, transparent 60%),
    #02071a;
  background-attachment:fixed}
a{color:inherit;text-decoration:none}
img{max-width:100%}
canvas{display:block}

/* 夜の海の粒（固定背景・全ページ共通） */
#stage{position:fixed;inset:0;width:100vw;height:100vh;z-index:0}
body.no-webgl #stage{display:none}
#orangeGlow{position:fixed;left:0;right:0;bottom:0;height:52vh;z-index:1;pointer-events:none;opacity:0;transition:opacity .5s;
  background:radial-gradient(80% 100% at 50% 120%, rgba(255,138,60,.28) 0%, rgba(255,120,40,.08) 40%, transparent 70%)}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(120% 90% at 50% 40%,transparent 52%,rgba(1,3,10,.62) 100%)}
#prog{position:fixed;top:0;left:0;height:2px;width:0;z-index:70;background:linear-gradient(90deg,var(--blue),var(--teallight));box-shadow:0 0 12px var(--teallight)}

/* ===== header ===== */
header{position:fixed;top:0;left:0;right:0;z-index:60;display:flex;align-items:center;gap:20px;padding:2px var(--pad);transition:background .4s,backdrop-filter .4s,padding .4s;
  background:rgba(3,8,18,.34);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid rgba(120,160,230,.1)}
header.solid{background:rgba(2,7,22,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding-top:2px;padding-bottom:2px}
.brand{position:relative;display:inline-flex;align-items:center}
.brand img{position:relative;z-index:1;height:86px;width:auto;display:block;
  filter:drop-shadow(0 0 1.2px rgba(150,215,255,1)) drop-shadow(0 0 1.2px rgba(150,215,255,.8)) drop-shadow(0 0 4px rgba(125,195,255,.34))}
header.solid .brand img{height:66px}
.menu{margin-left:auto;display:flex;align-items:center;gap:26px;align-self:stretch}
.menu a{font-family:var(--gothic);font-weight:500;font-size:14px;white-space:nowrap;color:#e9f1ff;opacity:.9;transition:opacity .2s}
.menu a:hover{opacity:1}
.has-children{position:relative;display:inline-flex;align-items:center;align-self:stretch}
.has-children::after{content:"";position:absolute;left:0;right:0;top:100%;height:14px}
.has-children .sub{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);background:rgba(4,12,32,.96);
  border:1px solid var(--line);border-radius:12px;padding:10px;display:flex;flex-direction:column;gap:2px;min-width:220px;opacity:0;visibility:hidden;transition:.25s;backdrop-filter:blur(10px)}
.has-children:hover .sub,.has-children:focus-within .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(4px)}
.has-children .sub a{padding:9px 14px;border-radius:8px;font-size:13.5px;color:#e4edff;opacity:1;font-weight:500}
.has-children .sub a:hover{background:rgba(63,214,255,.12);color:var(--cyan)}
.nav-cta{font-family:var(--gothic);font-weight:700;font-size:14px;background:var(--teallight);color:#032a26;padding:11px 20px;border-radius:999px;box-shadow:0 8px 24px rgba(63,230,214,.34);white-space:nowrap;transition:transform .2s}
.nav-cta:hover{transform:translateY(-2px)}
.burger{display:none;background:none;border:0;color:var(--white);font-size:24px;cursor:pointer;margin-left:auto}
#mobile-menu{display:none}
@media(max-width:960px){
  .menu{display:none}.burger{display:block}
  #mobile-menu{position:fixed;inset:0;z-index:59;background:rgba(2,7,26,.98);backdrop-filter:blur(14px);flex-direction:column;
    align-items:center;justify-content:center;gap:20px;padding:80px 24px}
  #mobile-menu.open{display:flex}
  #mobile-menu a{font-family:var(--gothic);font-weight:700;font-size:19px}
  #mobile-menu a.mobile-sub{font-weight:500;font-size:15px;color:var(--dim)}
}

/* ===== generic ===== */
main{position:relative;z-index:10}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--pad)}
.ey{font-family:var(--en);font-weight:600;letter-spacing:.24em;font-size:12px;color:var(--teallight);text-transform:uppercase;display:inline-flex;align-items:center;gap:11px;margin-bottom:18px}
.ey::before{content:"";width:28px;height:1px;background:var(--teallight)}
.sec-t{font-family:var(--gothic);font-weight:900;font-size:clamp(26px,4.1vw,46px);line-height:1.3;letter-spacing:.005em;word-break:keep-all;overflow-wrap:normal}
.sec-t .nw{white-space:nowrap}
.lead{color:var(--dim);margin-top:20px;max-width:44em;font-size:clamp(15px,1.7vw,18px)}
.hl{background:linear-gradient(transparent 60%,rgba(63,214,255,.4) 60%)}
.section{position:relative;z-index:10;padding:clamp(84px,13vh,150px) 0}
.panel{background:linear-gradient(160deg,rgba(6,16,40,.62),rgba(3,8,22,.72));border:1px solid var(--line);border-radius:20px;backdrop-filter:blur(4px)}
[data-rev]{opacity:0;transform:translateY(30px);transition:opacity .95s cubic-bezier(.16,1,.3,1),transform .95s cubic-bezier(.16,1,.3,1)}
[data-rev].in{opacity:1;transform:none}
.btn{font-family:var(--gothic);font-weight:700;font-size:16px;border-radius:999px;padding:16px 30px;display:inline-flex;align-items:center;gap:10px;transition:transform .2s}
.btn-main{background:var(--teallight);color:#032a26;box-shadow:0 12px 36px rgba(63,230,214,.34)}
.btn-main:hover{transform:translateY(-2px)}
.ghost{border:1.5px solid rgba(150,190,255,.5);color:var(--white)}
.ghost:hover{border-color:var(--teallight);color:var(--teallight)}
.btn-arrow{font-family:var(--gothic);font-weight:700;color:var(--teallight);display:inline-flex;align-items:center;gap:8px}

/* ===== footer ===== */
footer{position:relative;z-index:10;padding:60px 0 120px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(2,6,18,.4),rgba(1,3,10,.92))}
.fgrid{max-width:1180px;margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.flogo{display:inline-block;font-family:var(--en);font-weight:800;font-size:32px;color:var(--white);
  text-shadow:0 0 1px rgba(150,215,255,.95),0 0 1px rgba(150,215,255,.8),0 0 5px rgba(125,195,255,.34)}
.fad{color:var(--dim);font-size:13.5px;margin-top:16px;line-height:2}
.fad a{color:var(--dim)}
footer h5{font-family:var(--en);font-weight:700;letter-spacing:.14em;font-size:12px;color:var(--teallight);text-transform:uppercase;margin-bottom:14px}
.fmenu{display:flex;flex-direction:column;gap:11px}
.fmenu a{color:var(--dim);font-size:14px;transition:color .2s}
.fmenu a:hover{color:var(--teallight)}
.copy{max-width:1180px;margin:40px auto 0;padding:0 var(--pad);font-family:var(--en);font-size:12px;color:var(--dim)}

/* ===== mobile cta bar ===== */
.mcta{position:fixed;bottom:0;left:0;right:0;z-index:65;display:none;gap:1px;background:var(--line);border-top:1px solid var(--line)}
.mcta a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:15px 8px;font-family:var(--gothic);font-weight:700;font-size:15px}
.mcta svg{width:18px;height:18px}
.mcta .m-a{background:rgba(3,9,24,.95);color:var(--white)}
.mcta .m-b{background:var(--teallight);color:#032a26}
@media(max-width:640px){
  .mcta{display:flex}
  footer{padding-bottom:96px}
  .fgrid{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){
  [data-rev]{opacity:1;transform:none;transition:none}
}