@charset "utf-8";
/* =========================================================
   株式会社First コーポレートサイト
   Design: clean editorial / logistics（clecom採用サイト系を参考）
   Palette: 白基調 × ブルー主役 × オレンジアクセント
   Motion : cubic-bezier(0.51,0.01,0,0.98) を全体で使用
   ========================================================= */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
table{border-collapse:collapse}

/* ---------- tokens ---------- */
:root{
  --ink:#101418;          /* 近黒（見出し・ダーク面） */
  --text:#3a4048;         /* 本文 */
  --muted:#8b9099;        /* 補助 */
  --blue:#2a6db0;         /* 主役ブルー */
  --blue-deep:#1c4f86;
  --orange:#e5602f;       /* First アクセント（燈） */
  --bg:#ffffff;
  --soft:#f5f6f8;         /* 淡いグレー面 */
  --line:#e6e8ec;
  --ease:cubic-bezier(0.51,0.01,0,0.98);
  --jp:"Noto Sans JP",-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  --en:"Montserrat",var(--jp);
  --maxw:1180px;
  --gut:clamp(20px,5vw,64px);
}

body{
  font-family:var(--jp);
  color:var(--text);
  background:var(--bg);
  line-height:1.9;
  font-size:15px;
  font-weight:400;
  letter-spacing:.02em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}

/* ============ scroll reveal（共通の動き） ============ */
.reveal{opacity:0;transform:translateY(46px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none}
  html{scroll-behavior:auto}
}

/* ============ header ============ */
.header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  display:flex;align-items:center;gap:24px;
  height:84px;padding-inline:clamp(20px,5vw,52px);
  transition:background .5s var(--ease),box-shadow .5s var(--ease),height .5s var(--ease),color .4s var(--ease);
  color:#fff;
}
.header.is-solid{background:rgba(255,255,255,.96);backdrop-filter:blur(6px);box-shadow:0 1px 0 var(--line);color:var(--ink);height:70px}

.brand{display:flex;flex-direction:column;line-height:1.15;margin-right:auto}
.brand-name{font-weight:700;font-size:19px;letter-spacing:.04em}
.brand-sub{font-family:var(--en);font-size:10px;letter-spacing:.28em;opacity:.7;margin-top:2px}

.gnav ul{display:flex;gap:34px}
.gnav a{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;font-size:13px;font-weight:500}
.gnav .en{font-family:var(--en);font-weight:600;letter-spacing:.08em;font-size:13px}
.gnav .jp{font-size:9.5px;letter-spacing:.14em;opacity:.72}
.gnav a::after{content:"";position:absolute;left:50%;bottom:-2px;width:0;height:1.5px;background:currentColor;transform:translateX(-50%);transition:width .4s var(--ease)}
.gnav a:hover::after{width:100%}

.cta-btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:2px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  background:var(--blue);color:#fff;
  transition:background .4s var(--ease),transform .4s var(--ease),box-shadow .4s var(--ease);
}
.cta-btn .arw{transition:transform .4s var(--ease)}
.cta-btn:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 10px 24px -12px rgba(28,79,134,.7)}
.cta-btn:hover .arw{transform:translateX(4px)}

/* hamburger */
.menu-btn{display:none;width:44px;height:44px;position:relative;z-index:120}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:10px;width:24px;height:2px;background:currentColor;transition:transform .45s var(--ease),opacity .3s var(--ease),background .3s}
.menu-btn span{top:21px}
.menu-btn span::before{top:-7px}
.menu-btn span::after{top:7px}
.menu-btn.is-active span{background:transparent}
.menu-btn.is-active span::before{transform:translateY(7px) rotate(45deg)}
.menu-btn.is-active span::after{transform:translateY(-7px) rotate(-45deg)}

/* mobile nav overlay */
.mnav{
  position:fixed;inset:0;z-index:110;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  clip-path:circle(0 at calc(100% - 42px) 42px);
  transition:clip-path .7s var(--ease);
  pointer-events:none;
}
.mnav.is-open{clip-path:circle(150% at calc(100% - 42px) 42px);pointer-events:auto}
.mnav ul{width:min(80%,340px)}
.mnav li{border-bottom:1px solid rgba(255,255,255,.14);opacity:0;transform:translateY(20px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.mnav.is-open li{opacity:1;transform:none}
.mnav.is-open li:nth-child(1){transition-delay:.18s}
.mnav.is-open li:nth-child(2){transition-delay:.26s}
.mnav.is-open li:nth-child(3){transition-delay:.34s}
.mnav.is-open li:nth-child(4){transition-delay:.42s}
.mnav.is-open li:nth-child(5){transition-delay:.5s}
.mnav a{display:flex;align-items:baseline;gap:16px;padding:20px 4px;font-size:20px;font-weight:700}
.mnav .num{font-family:var(--en);font-size:13px;color:var(--blue);letter-spacing:.1em}
.mnav em{margin-left:auto;font-family:var(--en);font-style:normal;font-size:11px;letter-spacing:.18em;opacity:.55}

/* ============ hero ============ */
.hero{position:relative;height:100svh;min-height:600px;overflow:hidden;color:#fff;display:flex;align-items:center}
.hero-bg{
  position:absolute;inset:-10% 0 0 0;height:120%;
  background:url("../images/hero-1.jpg") center/cover no-repeat;
  will-change:transform;transform:translate3d(0,0,0);backface-visibility:hidden;
}
/* パララックスは可能ならコンポジタ(GPU)側で駆動＝スクロールと同期して常になめらか。
   非対応ブラウザ・reduced-motion時は静止背景にフォールバック（カクつき無し）。 */
@media (prefers-reduced-motion:no-preference){
  @supports (animation-timeline:scroll()){
    .hero-bg{
      animation:heroParallax linear both;
      animation-timeline:scroll(root);
      animation-range:0 100vh;
    }
    @keyframes heroParallax{to{transform:translate3d(0,11vh,0) scale(1.015)}}
  }
}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,16,24,.72) 0%,rgba(10,16,24,.42) 45%,rgba(10,16,24,.15) 100%)}
.hero-inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.hero-eyebrow{display:flex;align-items:center;gap:14px;font-family:var(--en);font-size:13px;font-weight:600;letter-spacing:.22em;margin-bottom:26px;
  opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease) .35s,transform 1s var(--ease) .35s}
.hero-eyebrow .line{width:46px;height:1px;background:var(--orange)}
.hero-catch{
  font-size:clamp(34px,6.4vw,74px);font-weight:700;line-height:1.28;letter-spacing:.02em;
  text-shadow:0 2px 30px rgba(0,0,0,.25);
}
.hero-catch span,.hero-catch{display:block}
/* 行ごとに立ち上がる */
.hero-catch{overflow:hidden}
.hero-catch .l{display:block;opacity:0;transform:translateY(110%);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
.hero-lead{margin-top:28px;font-size:clamp(14px,1.6vw,16px);font-weight:400;line-height:2;max-width:34em;
  opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease) .9s,transform 1s var(--ease) .9s}

.is-loaded .hero-eyebrow{opacity:1;transform:none}
.is-loaded .hero-catch .l{opacity:1;transform:none}
.is-loaded .hero-catch .l:nth-child(2){transition-delay:.14s}
.is-loaded .hero-lead{opacity:1;transform:none}

.hero-scroll{position:absolute;left:50%;bottom:26px;z-index:3;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--en);font-size:11px;letter-spacing:.2em}
.hero-scroll .bar{width:1px;height:56px;background:rgba(255,255,255,.5);position:relative;overflow:hidden}
.hero-scroll .bar::after{content:"";position:absolute;top:-56px;left:0;width:100%;height:56px;background:#fff;animation:scrolldown 2.1s var(--ease) infinite}
@keyframes scrolldown{0%{transform:translateY(0)}60%,100%{transform:translateY(112px)}}

/* ticker（帯マーキー） */
.ticker{position:absolute;left:0;bottom:0;z-index:2;width:100%;background:rgba(16,20,24,.74);border-top:1px solid rgba(255,255,255,.12);overflow:hidden}
.ticker-track{display:inline-flex;align-items:center;gap:18px;white-space:nowrap;padding:12px 0;font-family:var(--en);font-size:12px;letter-spacing:.16em;animation:ticker 26s linear infinite}
.ticker-track span{color:rgba(255,255,255,.85)}
.ticker-track .dot{color:var(--orange)}
@keyframes ticker{to{transform:translateX(-50%)}}

/* ============ section 共通 ============ */
main section{padding-block:clamp(76px,10vw,140px)}
.about{padding-top:clamp(90px,12vw,150px)}
.sec-head{margin-bottom:clamp(40px,6vw,72px)}
.sec-label{display:inline-flex;align-items:center;gap:12px;font-family:var(--en);font-weight:600;font-size:13px;letter-spacing:.18em;color:var(--blue);text-transform:capitalize}
.sec-num{font-weight:700;font-size:13px;color:var(--orange);letter-spacing:.05em}
.sec-num::before{content:"";display:inline-block;width:26px;height:1px;background:var(--orange);vertical-align:middle;margin-right:12px;margin-bottom:3px}
.sec-title{margin-top:16px;font-size:clamp(27px,4.4vw,46px);font-weight:700;line-height:1.4;color:var(--ink);letter-spacing:.03em}

/* ============ about ============ */
.about-body{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center}
.about-photo{position:relative;overflow:hidden;border-radius:3px}
.about-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;transform:scale(1.12);transition:transform 1.4s var(--ease)}
.about-photo.is-in img{transform:scale(1)}
.about-photo figcaption{position:absolute;left:16px;bottom:14px;font-family:var(--en);font-size:11px;letter-spacing:.16em;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.6)}
.about-photo::after{content:"";position:absolute;inset:0;background:var(--blue);transform:scaleX(1);transform-origin:right;transition:transform 1.1s var(--ease)}
.about-photo.is-in::after{transform:scaleX(0)}
.about-copy .lead{font-size:clamp(17px,2.2vw,21px);font-weight:700;color:var(--ink);line-height:1.85;margin-bottom:22px}
.about-copy p+p{margin-top:18px}

/* ============ strengths ============ */
.strengths{background:var(--soft)}
.strengths-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.strength{background:var(--bg);padding:clamp(28px,3.5vw,48px);transition:background .5s var(--ease),transform .5s var(--ease)}
.strength-no{font-family:var(--en);font-size:14px;font-weight:700;color:var(--blue);letter-spacing:.08em}
.strength h3{margin:14px 0 16px;font-size:clamp(18px,2.4vw,23px);font-weight:700;color:var(--ink);line-height:1.5}
.strength p{font-size:14.5px;color:var(--text)}
.strength:hover{background:var(--ink)}
.strength:hover .strength-no{color:var(--orange)}
.strength:hover h3{color:#fff}
.strength:hover p{color:rgba(255,255,255,.78)}

/* ============ services ============ */
.services-list{display:flex;flex-direction:column;gap:clamp(48px,7vw,110px)}
.service{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center;position:relative}
.service:nth-child(even) .service-photo{order:2}
.service-no{position:absolute;top:-14px;left:0;font-family:var(--en);font-size:clamp(60px,9vw,120px);font-weight:700;line-height:1;color:var(--soft);z-index:0;letter-spacing:-.02em}
.strengths .strength,.service{}
.service-photo{position:relative;overflow:hidden;border-radius:3px;z-index:1}
.service-photo img{width:100%;aspect-ratio:16/10;object-fit:cover;transform:scale(1.14);transition:transform 1.4s var(--ease)}
.service.is-in .service-photo img{transform:scale(1)}
.service-photo::after{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleX(1);transform-origin:right;transition:transform 1.1s var(--ease) .1s}
.service.is-in .service-photo::after{transform:scaleX(0)}
.service-body{position:relative;z-index:1}
.service-body h3{font-size:clamp(21px,3vw,30px);font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:18px}
.service-body h3 .en{display:block;font-family:var(--en);font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--blue);margin-top:8px}
.service-body p{font-size:15px;max-width:30em}

/* ============ company ============ */
.company{background:var(--ink);color:rgba(255,255,255,.82)}
.company .sec-title{color:#fff}
.company .sec-label{color:#7fb2e6}
.company .sec-num{color:var(--orange)}
.company .sec-num::before{background:var(--orange)}
.company-body{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:start}
.company-dl{border-top:1px solid rgba(255,255,255,.16)}
.company-dl>div{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:20px 4px;border-bottom:1px solid rgba(255,255,255,.16)}
.company-dl dt{font-weight:700;color:#fff;font-size:14px;letter-spacing:.05em}
.company-dl dd{font-size:15px}
.company-dl dd small{display:block;font-family:var(--en);font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:4px}
.company-map{position:relative;overflow:hidden;border-radius:3px;min-height:340px;height:100%}
.company-map iframe{position:absolute;inset:0;width:100%;height:100%;border:0;filter:grayscale(.2)}

/* ============ recruit ============ */
.recruit-lead{font-size:clamp(15px,1.8vw,17px);color:var(--text);margin-bottom:44px;max-width:44em}
.recruit-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,28px);margin-bottom:52px}
.stat{background:var(--soft);border-radius:3px;padding:clamp(24px,3vw,40px) 16px;text-align:center;border-bottom:3px solid var(--blue)}
.stat b{display:block;font-family:var(--en);font-size:clamp(30px,4.6vw,50px);font-weight:700;color:var(--ink);line-height:1;letter-spacing:.02em}
.stat b small{font-family:var(--jp);font-size:16px;margin-left:4px;color:var(--blue)}
.stat span{display:block;margin-top:12px;font-size:13px;letter-spacing:.1em;color:var(--muted)}

.recruit-table-wrap{border-top:2px solid var(--ink)}
.recruit-table{width:100%}
.recruit-table th,.recruit-table td{text-align:left;vertical-align:top;padding:22px clamp(8px,2vw,24px);border-bottom:1px solid var(--line);font-size:15px}
.recruit-table th{width:190px;font-weight:700;color:var(--ink);background:var(--soft);letter-spacing:.05em}
.loc-list{display:flex;flex-wrap:wrap;gap:8px 10px}
.loc-list li{font-size:13px;color:var(--text);background:var(--soft);border:1px solid var(--line);border-radius:2px;padding:4px 10px;line-height:1.5}

/* ============ contact ============ */
.contact{background:var(--soft)}
.contact-note{margin-bottom:26px;font-size:15px;color:var(--text)}
.notice{background:#fff;border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:3px;padding:22px 26px;margin-bottom:40px}
.notice-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:8px}
.notice p{font-size:13.5px;color:var(--text)}

.form{background:#fff;border:1px solid var(--line);border-radius:4px;padding:clamp(28px,4vw,52px);max-width:760px}
.field{margin-bottom:24px}
.field label{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;color:var(--ink);margin-bottom:10px}
.req{font-size:11px;font-weight:700;color:#fff;background:var(--orange);padding:2px 8px;border-radius:2px;letter-spacing:.06em}
.field input,.field select,.field textarea{
  width:100%;font:inherit;font-size:15px;color:var(--ink);
  padding:14px 16px;border:1px solid var(--line);border-radius:3px;background:#fff;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(42,109,176,.14)}
.field textarea{resize:vertical}
.submit-btn{
  display:inline-flex;align-items:center;gap:12px;
  margin-top:8px;padding:16px 44px;border-radius:2px;
  font-size:15px;font-weight:700;letter-spacing:.08em;
  background:var(--blue);color:#fff;
  transition:background .4s var(--ease),transform .4s var(--ease),box-shadow .4s var(--ease)}
.submit-btn .arw{transition:transform .4s var(--ease)}
.submit-btn:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(28,79,134,.8)}
.submit-btn:hover .arw{transform:translateX(5px)}

/* ============ footer ============ */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding-block:clamp(48px,6vw,76px)}
.footer-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand{font-size:22px;font-weight:700;color:#fff;line-height:1.2}
.footer-brand small{display:block;font-family:var(--en);font-size:11px;letter-spacing:.24em;color:var(--muted);margin-top:6px}
.footer-add{font-style:normal;font-size:13px;margin-top:16px}
.footer-nav ul{display:flex;flex-wrap:wrap;gap:14px 28px}
.footer-nav a{font-size:13px;position:relative;transition:color .3s var(--ease)}
.footer-nav a:hover{color:#fff}
.copyright{margin-top:28px;font-family:var(--en);font-size:11px;letter-spacing:.14em;color:var(--muted)}

/* ============ to-top ============ */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:60;
  width:48px;height:48px;border-radius:50%;
  background:var(--ink);color:#fff;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .4s var(--ease),transform .4s var(--ease),background .3s;
  box-shadow:0 8px 24px -8px rgba(0,0,0,.5)}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--blue)}

/* ============ responsive ============ */
@media (max-width:960px){
  .gnav,.cta-btn{display:none}
  .menu-btn{display:block}
  .header{height:66px}
  .header.is-solid{height:60px}
  .about-body,.service,.service:nth-child(even) .service-photo,.company-body{grid-template-columns:1fr;order:0}
  .service-photo{order:0 !important}
  .strengths-list{grid-template-columns:1fr}
  .company-map{min-height:300px}
}
@media (max-width:560px){
  body{font-size:14.5px}
  .recruit-stats{grid-template-columns:1fr;gap:12px}
  .recruit-table th,.recruit-table td{display:block;width:100%;border-bottom:0}
  .recruit-table th{border-top:1px solid var(--line)}
  .recruit-table td{padding-top:8px;padding-bottom:20px;border-bottom:1px solid var(--line)}
  .recruit-table-wrap{border-top-width:2px}
  .form{padding:24px 18px}
  .footer-top{flex-direction:column}
}