/* ============================================================
   base.css — 全ページ共通(リセット・変数・ヘッダー・フッター・
   共通コンポーネント)
   ============================================================ */

/* ============ Reset & Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --paper:#f4f1ea;          /* 和紙白 */
  --paper-2:#ece7dc;        /* やや濃い和紙 */
  --paper-3:#e0d9c8;        /* 罫線・薄背景 */
  --sumi:#0c0c0c;           /* 漆黒 */
  --sumi-2:#1a1a1a;
  --ink:#2c2620;            /* 墨褐色 */
  --copper:#a04a2a;         /* 銅朱 */
  --copper-deep:#7a3820;
  --gold:#b8935a;           /* 金 */
  --gold-light:#d4b988;
  --text:#1a1a1a;
  --text-dim:#5a544c;
  --text-mute:#8a8378;
  --line:#0c0c0c;
  --line-soft:#c9c1b0;
  --container:1240px;
}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  background:var(--paper);
  color:var(--text);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  font-feature-settings:"palt";
}
.mincho{font-family:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif}
.sans{font-family:"Inter",sans-serif}
a{color:inherit;text-decoration:none;transition:color .25s}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%;display:block}

.container{max-width:var(--container);margin:0 auto;padding:0 32px}

/* ============ Texture / Background ============ */
body::before{
  content:"";position:fixed;inset:0;
  background:
    radial-gradient(circle at 20% 30%,rgba(184,147,90,.06),transparent 50%),
    radial-gradient(circle at 80% 70%,rgba(160,74,42,.04),transparent 50%);
  pointer-events:none;z-index:0;
}
body::after{
  content:"";position:fixed;inset:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(12,12,12,.015) 0,rgba(12,12,12,.015) 1px,transparent 1px,transparent 3px);
  pointer-events:none;z-index:0;mix-blend-mode:multiply;
}

/* ============ Header ============ */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(244,241,234,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 40px;
  max-width:1440px;margin:0 auto;
}
.logo{
  display:flex;align-items:center;gap:14px;
  cursor:pointer;
}
.logo-mark{
  width:42px;height:42px;
  background:var(--sumi);
  display:flex;align-items:center;justify-content:center;
  font-family:"Shippori Mincho",serif;
  font-size:22px;font-weight:700;color:var(--paper);
  position:relative;
  flex-shrink:0;
}
.logo-mark::after{
  content:"";position:absolute;inset:3px;
  border:1px solid var(--gold);
}
.logo-text{
  font-family:"Shippori Mincho",serif;
  font-size:20px;font-weight:600;letter-spacing:.15em;
  color:var(--sumi);
}
.logo-text small{
  display:block;font-family:"Inter",sans-serif;
  font-size:9px;font-weight:600;letter-spacing:.3em;
  color:var(--copper);margin-top:2px;
}

.nav{display:flex;align-items:center;gap:0}
.nav-link{
  font-family:"Shippori Mincho",serif;
  font-size:13px;font-weight:500;
  padding:8px 16px;
  color:var(--sumi);
  letter-spacing:.1em;
  position:relative;
  cursor:pointer;
  display:inline-block;
}
.nav-link::after{
  content:"";position:absolute;
  left:50%;bottom:2px;
  width:0;height:1px;
  background:var(--copper);
  transition:all .3s;
  transform:translateX(-50%);
}
.nav-link:hover::after,.nav-link.active::after{width:60%}
.nav-link.active{color:var(--copper)}

.header-actions{display:flex;align-items:center;gap:16px}
.lang-switch{
  display:flex;align-items:center;
  border:1px solid var(--sumi);
}
.lang-btn{
  padding:6px 10px;
  font-family:"Inter",sans-serif;
  font-size:10px;font-weight:700;letter-spacing:.15em;
  color:var(--sumi);
  transition:all .2s;
}
.lang-btn.active{background:var(--sumi);color:var(--paper)}
.lang-btn:hover:not(.active){background:var(--paper-3)}

.btn-contact{
  padding:11px 24px;
  background:var(--sumi);
  color:var(--paper);
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.2em;
  position:relative;
  transition:all .25s;
  display:inline-block;
}
.btn-contact::before{
  content:"";position:absolute;inset:3px;
  border:1px solid var(--gold);
  transition:inset .25s;
}
.btn-contact:hover{background:var(--copper);color:var(--paper)}
.btn-contact:hover::before{inset:5px}

.hamburger{display:none;width:28px;height:20px;position:relative;cursor:pointer}
.hamburger span{
  position:absolute;left:0;width:100%;height:1.5px;
  background:var(--sumi);transition:.3s;
}
.hamburger span:nth-child(1){top:0}
.hamburger span:nth-child(2){top:9px}
.hamburger span:nth-child(3){top:18px}
.hamburger.open span:nth-child(1){transform:rotate(45deg);top:9px}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg);top:9px}

/* ============ Page wrapper ============ */
.page{min-height:100vh;padding-top:82px;position:relative;z-index:1}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.page{animation:fadeIn .6s ease}

/* ============ Image Placeholder ============ */
.img-ph{
  background:var(--paper-3);
  position:relative;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-mute);
  font-family:"Shippori Mincho",serif;
  font-size:13px;letter-spacing:.2em;
  overflow:hidden;
}
.img-ph img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;
}
.img-ph::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(135deg,transparent 49.5%,rgba(12,12,12,.06) 49.5%,rgba(12,12,12,.06) 50.5%,transparent 50.5%),
    linear-gradient(45deg,transparent 49.5%,rgba(12,12,12,.06) 49.5%,rgba(12,12,12,.06) 50.5%,transparent 50.5%);
}
.img-ph::after{
  content:"";position:absolute;inset:8px;
  border:1px solid var(--line-soft);
}
.img-ph span{position:relative;z-index:1;background:var(--paper-3);padding:6px 14px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:18px 36px;
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.25em;
  position:relative;
  transition:all .3s;
  cursor:pointer;
  border:1px solid var(--sumi);
}
.btn::after{
  content:"→";font-size:14px;transition:transform .3s;
}
.btn:hover::after{transform:translateX(4px)}
.btn-primary{background:var(--sumi);color:var(--paper)}
.btn-primary:hover{background:var(--copper);border-color:var(--copper)}
.btn-outline{background:transparent;color:var(--sumi)}
.btn-outline:hover{background:var(--sumi);color:var(--paper)}

/* ============ Section Common ============ */
.section{padding:140px 0;position:relative}
.section-num{
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.4em;
  color:var(--copper);
  margin-bottom:16px;
  display:flex;align-items:center;gap:14px;
}
.section-num::before{
  content:"";width:40px;height:1px;background:var(--copper);
}
.section-title{
  font-family:"Shippori Mincho",serif;
  font-size:clamp(36px,5vw,56px);
  font-weight:600;letter-spacing:.05em;
  line-height:1.3;
  color:var(--sumi);
  margin-bottom:24px;
}
.section-sub{
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:600;letter-spacing:.3em;
  color:var(--text-mute);
  text-transform:uppercase;
}
.section-desc{
  font-family:"Shippori Mincho",serif;
  color:var(--ink);font-size:15px;
  max-width:680px;line-height:2;
  margin-top:24px;
}

/* ============ Page Header (下層ページ共通) ============ */
.page-header{
  padding:120px 0 80px;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  position:relative;
}
.page-header::before{
  content:"";position:absolute;
  top:50%;right:0;
  width:120px;height:1px;background:var(--sumi);
}
.breadcrumb{
  font-family:"Inter",sans-serif;
  font-size:11px;color:var(--text-mute);
  margin-bottom:24px;letter-spacing:.15em;
}
.breadcrumb a{cursor:pointer}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb span{margin:0 12px}
.page-title{
  font-family:"Shippori Mincho",serif;
  font-size:clamp(42px,6vw,68px);
  font-weight:600;letter-spacing:.08em;
  color:var(--sumi);
}
.page-title-en{
  font-family:"Inter",sans-serif;
  font-size:12px;font-weight:600;letter-spacing:.4em;
  color:var(--copper);
  margin-top:12px;text-transform:uppercase;
}

/* ============ Section Heading (会社概要・募集要項など共通) ============ */
.section-h{
  font-family:"Shippori Mincho",serif;
  font-size:32px;font-weight:600;
  letter-spacing:.08em;
  margin-bottom:40px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
  position:relative;
  display:flex;align-items:baseline;gap:20px;
}
.section-h .en{
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.3em;
  color:var(--copper);
}

/* ============ Footer ============ */
.footer{
  background:var(--sumi);
  color:var(--paper);
  padding:100px 0 30px;
  border-top:1px solid var(--line);
  position:relative;
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:60px;margin-bottom:80px;
}
.footer-logo{
  display:flex;align-items:center;gap:14px;margin-bottom:28px;
}
.footer-logo .logo-mark{
  background:var(--paper);color:var(--sumi);
}
.footer-logo .logo-mark::after{border-color:var(--copper)}
.footer-logo .logo-text{color:var(--paper)}
.footer-addr{
  font-family:"Shippori Mincho",serif;
  font-size:13px;
  color:rgba(244,241,234,.7);
  line-height:2;
}
.footer-h{
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.3em;
  color:var(--gold-light);
  margin-bottom:24px;
  padding-bottom:12px;
  border-bottom:1px solid rgba(244,241,234,.2);
}
.footer-list li{margin-bottom:12px}
.footer-list a{
  font-family:"Shippori Mincho",serif;
  font-size:13px;
  color:rgba(244,241,234,.6);
  cursor:pointer;
}
.footer-list a:hover{color:var(--gold-light)}
.footer-bottom{
  border-top:1px solid rgba(244,241,234,.15);
  padding-top:30px;
  display:flex;justify-content:space-between;align-items:center;
  font-family:"Inter",sans-serif;
  font-size:11px;
  color:rgba(244,241,234,.5);
  letter-spacing:.1em;
}
.footer-bottom a:hover{color:var(--gold-light)}