/* RE-INNOVATIONS common styles — base / header / page-hero / footer / mobile menu
   (REI_About.html から抽出。記事詳細・導入事例・汎用テンプレートで使用) */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --nav-h:72px;
  --navy:#132d40;--navy-deep:#081826;--blue-main:#2d6189;--blue-dark:#1e4a6a;
  --blue-light:#7ab8d4;--blue-bg:#e8f2f8;--sky:#f0f6fa;
  --gold:#4a7a9b;--gold-light:#7ab8d4;
  --text-main:#1a252f;--text-sub:#5a6e7a;--text-mute:#96a8b2;--border:#dce6ed;
  --content:1180px;
  --eng:'Cormorant Garamond',Georgia,serif;
  --jpn:'Noto Sans JP','Hiragino Sans',sans-serif;
  --mincho:'Shippori Mincho','Hiragino Mincho ProN',serif;
  --ease:cubic-bezier(0.16,1,0.3,1)}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--jpn);font-size:14px;font-weight:300;color:var(--text-main);line-height:1.95;background:#fff;overflow-x:hidden}
::selection{background:var(--gold);color:#fff}
/* grid items must shrink to fit their cell (prevents text overflow) */

/* font-loading: hide content until fonts ready, then fade in */
body{opacity:0;transition:opacity .35s ease-out}
body.fonts-loaded,body.fonts-timeout{opacity:1}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--navy-deep)}
::-webkit-scrollbar-thumb{background:var(--blue-dark);border:2px solid var(--navy-deep)}
::-webkit-scrollbar-thumb:hover{background:var(--blue-main)}

.scroll-progress{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--gold),var(--gold-light));z-index:9999;width:0%;transition:width .1s linear}
.grain{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.035;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ═══ HEADER ═══ */
header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);display:flex;align-items:center;transition:background .5s var(--ease),backdrop-filter .5s,border-color .5s;border-bottom:0.5px solid transparent;background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(1.2);border-bottom-color:var(--border)}
header.transparent{background:transparent;backdrop-filter:none;border-bottom-color:transparent}
.header-inner{max-width:none;margin:0;padding:0 80px;width:100%;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--eng);font-size:25px;font-weight:500;color:var(--navy);letter-spacing:.08em;text-decoration:none;transition:transform .4s var(--ease);display:flex;align-items:center;gap:2px}
.logo:hover{transform:translateX(2px)}
.logo .hp,.ft-logo .hp{font-family:'Inter','Helvetica Neue',Arial,sans-serif;font-weight:500;display:inline-block;margin:0 .04em;transform:translateY(-2px);font-size:.85em}
.logo .re{color:var(--gold)}
nav{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-item>a{font-family:var(--eng);font-size:15px;font-weight:500;color:var(--text-sub);text-decoration:none;letter-spacing:.05em;white-space:nowrap;padding:10px 18px;transition:color .4s;display:block;position:relative}
.nav-item>a::after{content:'';position:absolute;left:18px;right:18px;bottom:6px;height:1px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.nav-item:hover>a::after{transform:scaleX(1)}
.nav-item:hover>a,.nav-item.active>a{color:var(--navy)}
.nav-item.active>a::after{transform:scaleX(1)}
.dropdown{position:absolute;top:calc(100% + 4px);left:50%;transform:translateX(-50%) translateY(10px);background:rgba(13,34,51,.97);backdrop-filter:blur(20px);border:0.5px solid rgba(255,255,255,.1);border-top:2px solid var(--gold-light);padding:6px 0;min-width:248px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .4s var(--ease);box-shadow:0 30px 60px -15px rgba(0,0,0,.45)}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 26px;font-family:var(--jpn);font-size:13px;font-weight:300;color:rgba(255,255,255,.7);text-decoration:none;letter-spacing:.04em;transition:all .3s;position:relative;border-bottom:0.5px solid rgba(255,255,255,.06)}
.dropdown a:last-child{border-bottom:none}
.dropdown a .dd-text{display:flex;flex-direction:column;gap:4px}
.dropdown a .dd-en{font-family:var(--eng);font-size:9.5px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-light);opacity:.65;transition:opacity .3s}
.dropdown a .dd-jp{font-size:13px;color:rgba(255,255,255,.85);transition:color .3s}
.dropdown a .dd-arrow{font-family:var(--eng);font-size:13px;color:var(--gold-light);opacity:0;transform:translateX(-6px);transition:all .35s var(--ease)}
.dropdown a::before{content:'';position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--gold-light);transform:scaleY(0);transition:transform .3s var(--ease)}
.dropdown a:hover{background:rgba(255,255,255,.04)}
.dropdown a:hover .dd-jp{color:#fff}
.dropdown a:hover .dd-en{opacity:1}
.dropdown a:hover .dd-arrow{opacity:1;transform:translateX(0)}
.dropdown a:hover::before{transform:scaleY(1)}
.nav-cta{display:none}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;z-index:1001}
.hamburger span{display:block;width:26px;height:1.5px;background:var(--navy);transition:all .4s var(--ease)}
.hamburger.open span{background:#fff}
.hamburger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:1;transform:rotate(0deg)}
.hamburger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ═══ PAGE HERO ═══ */
.page-hero{position:relative;height:480px;margin-top:0;padding-top:var(--nav-h);overflow:hidden}
.ph-bg{position:absolute;inset:0;background:radial-gradient(ellipse 70% 100% at 75% 50%,rgba(45,97,137,.35),transparent 65%),radial-gradient(ellipse 50% 80% at 20% 30%,rgba(74,122,155,.08),transparent 60%),linear-gradient(135deg,#172c40 0%,#1e3650 100%)}
.ph-scrim{position:absolute;inset:0;background:none}
.ph-texture{position:absolute;inset:0;opacity:.12;background-image:linear-gradient(rgba(122,184,212,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(122,184,212,.1) 1px,transparent 1px);background-size:54px 54px;transform:perspective(600px) rotateX(55deg) scale(2);transform-origin:bottom;mask-image:linear-gradient(to top,#000 0%,transparent 65%);-webkit-mask-image:linear-gradient(to top,#000 0%,transparent 65%)}
.ph-content{position:relative;z-index:5;height:100%;max-width:var(--content);margin:0 auto;padding:0 40px;display:flex;flex-direction:column;justify-content:center}
.ph-breadcrumb{font-family:var(--eng);font-size:11px;color:rgba(255,255,255,.45);letter-spacing:.1em;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.ph-breadcrumb a{color:rgba(255,255,255,.45);text-decoration:none;transition:color .3s}
.ph-breadcrumb a:hover{color:var(--gold-light)}
.ph-breadcrumb .sep{color:rgba(255,255,255,.2)}
.ph-eyebrow{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.ph-eyebrow::before{content:'';width:48px;height:1px;background:linear-gradient(90deg,var(--gold),transparent)}
.ph-eyebrow span{font-family:var(--eng);font-size:12px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--gold-light)}
.ph-h1{font-family:var(--mincho);font-size:clamp(14px,4.4vw,48px);font-weight:500;color:#fff;line-height:1.45;letter-spacing:.02em;margin-bottom:24px}
.ph-h1 .accent{color:var(--gold-light)}
.ph-sub{font-family:var(--jpn);font-size:clamp(11.5px,2.6vw,15px);font-weight:300;color:rgba(255,255,255,.78);line-height:2.05;max-width:780px;letter-spacing:.02em}

/* ═══ COMMON ═══ */
.section{position:relative;padding:140px 0}
.section.compact{padding:80px 0}
.inner{max-width:var(--content);margin:0 auto;padding:0 40px}
.eyebrow{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.eyebrow::before{content:'';width:40px;height:1px;background:var(--gold)}
.eyebrow span{font-family:var(--eng);font-size:12px;font-weight:500;letter-spacing:.26em;text-transform:uppercase;color:var(--blue-main)}
.section-title{font-family:var(--mincho);font-size:clamp(15px,3.8vw,36px);font-weight:500;color:var(--text-main);line-height:1.5;letter-spacing:.02em}
.reveal{opacity:0;transform:translateY(48px);transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.12s}.reveal-d2{transition-delay:.24s}.reveal-d3{transition-delay:.36s}

/* ═══ FOOTER ═══ */
footer{background:var(--navy-deep);padding:56px 0 0;border-top:0.5px solid rgba(255,255,255,.06)}
footer .inner{max-width:1440px;padding:0 80px}
.ft-top{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);gap:48px;padding-bottom:40px;border-bottom:0.5px solid rgba(255,255,255,.08)}
.ft-logo{font-family:var(--eng);font-size:24px;font-weight:500;color:#fff;letter-spacing:.08em;margin-bottom:24px;display:inline-block;text-decoration:none}
.ft-logo .re{color:var(--gold)}
.ft-addr{font-size:12.5px;color:rgba(255,255,255,.45);line-height:2.1;margin-bottom:20px}
.ft-contact{font-family:var(--eng);font-size:13px;color:rgba(255,255,255,.6);line-height:2}
.ft-contact a{color:var(--gold-light);text-decoration:none}
.ft-col h4{font-family:var(--eng);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:22px}
.ft-col a{display:block;font-size:13px;color:rgba(255,255,255,.6);text-decoration:none;line-height:2.4;letter-spacing:.02em;transition:all .3s}
.ft-col a:hover{color:#fff;padding-left:6px}
.ft-bottom{padding:16px 0;display:flex;justify-content:space-between;align-items:center}
.ft-copy{font-family:var(--eng);font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.3)}
.ft-back{font-family:var(--eng);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.4);cursor:pointer;display:flex;align-items:center;gap:8px;transition:color .3s;background:none;border:none}
.ft-back:hover{color:var(--gold-light)}

/* mobile menu */
.mobile-menu{position:fixed;inset:var(--nav-h) 0 0;background:var(--navy-deep);z-index:999;transform:translateX(100%);transition:transform .6s var(--ease);overflow-y:auto;padding:30px 0}
.mobile-menu.open{transform:translateX(0)}
.mm-item{border-bottom:0.5px solid rgba(255,255,255,.08)}
.mm-item>a,.mm-acc{display:flex;align-items:center;justify-content:space-between;width:100%;padding:20px 32px;font-family:var(--eng);font-size:16px;color:#fff;text-decoration:none;background:none;border:none;cursor:pointer;letter-spacing:.04em}
.mm-sub{background:rgba(255,255,255,.03);max-height:0;overflow:hidden;transition:max-height .5s var(--ease)}
.mm-sub.open{max-height:300px}
.mm-sub a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 44px;font-size:14px;color:rgba(255,255,255,.6);text-decoration:none}
.mm-sub a .dd-text{display:flex;flex-direction:column;gap:4px}
.mm-sub a .dd-en{font-family:var(--eng);font-size:10px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-light);opacity:.65}
.mm-sub a .dd-jp{font-size:14px;color:rgba(255,255,255,.85)}
.mm-sub a .dd-arrow{font-family:var(--eng);font-size:13px;color:var(--gold-light);opacity:.6}
.mm-acc::after{content:'+';font-size:20px;color:var(--gold-light)}
.mm-acc.open::after{content:'−'}

/* ═══ RESPONSIVE ═══ */
@media(max-width:980px){
  .manifesto-grid,.profile-grid,.recruit-banner .inner{grid-template-columns:minmax(0,1fr);gap:48px}
  .message-grid{grid-template-columns:minmax(0,1fr);gap:40px}
  .portrait-wrap{position:relative;top:0;max-width:320px;margin:0 auto}
  .values-grid{grid-template-columns:minmax(0,1fr)}
  .ft-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px}
}
@media(max-width:768px){
  :root{--nav-h:64px}
  nav{display:none}.hamburger{display:flex}
  .header-inner{padding:0 24px !important}
  .page-hero{height:auto;min-height:360px;padding:calc(var(--nav-h) + 60px) 24px 50px}
  .ph-h1{line-height:1.45;margin-bottom:18px}
  .ph-sub{line-height:1.95;letter-spacing:.02em}
  .ph-breadcrumb{font-size:10px;margin-bottom:14px}
  .ph-eyebrow{margin-bottom:14px}
  .ph-eyebrow span{font-size:10px;letter-spacing:.2em}
  .ph-eyebrow::before{width:32px}
  .ph-content{padding:0 24px}
  .section{padding:80px 0}
  .inner{padding:0 24px}
  footer .inner{padding:0 24px}
  .manifesto::before{font-size:clamp(50px,14vw,260px)}
  .message-quote::before{display:none}
  .ft-top{grid-template-columns:minmax(0,1fr)}
  .recruit-banner .inner{text-align:center}
  .rb-btn{margin:0 auto}
  .profile-row{grid-template-columns:100px minmax(0,1fr)}
}


/* ── Focus visibility (accessibility) ── */
:focus-visible{outline:2px solid #2d6189;outline-offset:3px;border-radius:2px}


/* ═══ GENERIC CONTENT (theme addition: page.php / 404) ═══ */
.rei-entry{padding:100px 0}
.rei-entry .inner{max-width:820px}
.rei-entry h2{font-family:var(--mincho);font-size:24px;font-weight:500;color:var(--text-main);margin:48px 0 20px;line-height:1.6}
.rei-entry h3{font-family:var(--jpn);font-size:17px;font-weight:500;color:var(--navy);margin:36px 0 14px}
.rei-entry p{font-size:14px;line-height:2.2;color:var(--text-sub);margin-bottom:22px}
.rei-entry ul,.rei-entry ol{margin:0 0 22px 22px;color:var(--text-sub);font-size:14px;line-height:2.1}
.rei-entry img{max-width:100%;height:auto}
.rei-entry a{color:var(--blue-main)}
.rei-404{padding:180px 0 140px;text-align:center}
.rei-404 .code{font-family:var(--eng);font-size:clamp(60px,10vw,120px);font-weight:300;color:var(--sky);line-height:1;-webkit-text-stroke:1px var(--blue-light)}
.rei-404 h1{font-family:var(--mincho);font-size:24px;font-weight:500;color:var(--text-main);margin:24px 0 16px}
.rei-404 p{font-size:14px;color:var(--text-sub);margin-bottom:40px}