/*
  Site: メルオペ・PCオペ求人ガイド（ブリッジ型でも“薄い誘導ページ”にならない設計）
  - 外部ライブラリ不使用
  - 画像はSVG中心（軽量）
  - アクセシビリティ/SEO（見出し階層・可読性・コントラスト）重視
*/

:root{
  --bg:#0b1220;
  --card:#0f1b33;
  --text:#eaf1ff;
  --muted:#b9c6e6;
  --brand:#6aa6ff;
  --brand2:#7cf0d2;
  --border:rgba(255,255,255,.12);
  --shadow:0 12px 40px rgba(0,0,0,.35);
  --radius:18px;
  --max:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(106,166,255,.25), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(124,240,210,.18), transparent 55%),
    linear-gradient(180deg, #070b14 0%, var(--bg) 45%, #070b14 100%);
  line-height:1.7;
}

a{color:inherit}

.container{max-width:var(--max); margin:0 auto; padding:0 18px}

.skip{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{left:12px; top:12px; width:auto; height:auto; padding:10px 12px; background:#000; border:1px solid var(--border); border-radius:10px; z-index:9999}

/* Header */
.site-header{
  position:sticky; top:0; z-index:1000;
  backdrop-filter:saturate(160%) blur(10px);
  background:rgba(7,11,20,.72);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  min-height:64px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  text-decoration:none;
}
.logo{
  width:34px; height:34px; border-radius:12px;
  background:linear-gradient(135deg, var(--brand) 0%, var(--brand2) 100%);
  box-shadow:0 10px 25px rgba(106,166,255,.20);
}
.brand strong{font-size:15px; letter-spacing:.2px}
.brand span{display:block; font-size:12px; color:var(--muted); margin-top:-2px}

.nav{
  display:flex; align-items:center; gap:10px;
}
.nav a{
  text-decoration:none;
  padding:10px 10px;
  border-radius:12px;
  color:var(--muted);
  font-size:14px;
}
.nav a:hover{background:rgba(255,255,255,.06); color:var(--text)}

.menu-btn{
  display:none;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  font-weight:600;
}

/* Hero */
.hero{padding:44px 0 26px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:22px;
  align-items:stretch;
}
.hero-card{
  border:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,.03) 100%);
  box-shadow:var(--shadow);
  border-radius:var(--radius);
  overflow:hidden;
}
.hero-main{padding:26px 22px}
.kicker{
  display:inline-flex; gap:8px; align-items:center;
  font-size:12px;
  color:rgba(234,241,255,.85);
  border:1px solid var(--border);
  background:rgba(106,166,255,.10);
  padding:7px 10px;
  border-radius:999px;
}
.kicker b{color:var(--brand2)}

h1{
  margin:14px 0 10px;
  font-size: clamp(24px, 2.6vw, 38px);
  line-height:1.25;
}
.lead{color:var(--muted); margin:0 0 16px; font-size:15.5px}

.cta-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  text-decoration:none;
  border-radius:14px;
  padding:12px 14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  font-weight:700;
  letter-spacing:.2px;
}
.btn.primary{
  background:linear-gradient(135deg, rgba(106,166,255,.95) 0%, rgba(124,240,210,.92) 100%);
  color:#06101e;
  border:0;
}
.btn.primary:hover{filter:brightness(1.03)}
.btn.ghost:hover{background:rgba(255,255,255,.07)}

.mini-note{font-size:12.5px; color:rgba(185,198,230,.95); margin-top:10px}

.hero-side{
  padding:18px 18px 0;
  display:flex; flex-direction:column; gap:14px;
}
.side-box{
  border:1px solid var(--border);
  border-radius:16px;
  background:rgba(15,27,51,.55);
  padding:14px 14px;
}
.side-box h2{margin:0 0 8px; font-size:14.5px}
.side-box p{margin:0; color:var(--muted); font-size:13.5px}

.quick-links{display:flex; flex-wrap:wrap; gap:8px; margin-top:10px}
.pill{
  display:inline-flex; text-decoration:none;
  border:1px solid var(--border);
  padding:8px 10px;
  border-radius:999px;
  font-size:13px;
  color:rgba(234,241,255,.92);
  background:rgba(255,255,255,.03);
}
.pill:hover{background:rgba(255,255,255,.06)}

.hero-illustration{
  margin-top:auto;
  border-top:1px solid var(--border);
  padding:14px;
}

/* Main */
main{padding:14px 0 58px}

/* Timeline */
.timeline{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(15,27,51,.55);
  overflow:hidden;
}
.timeline-head{padding:14px 16px; display:flex; justify-content:space-between; gap:10px; flex-wrap:wrap; align-items:baseline}
.timeline-head h2{margin:0; font-size:16px}
.timeline-meta{color:var(--muted); font-size:12.5px}
.timeline-bar{border-top:1px solid var(--border); background:rgba(7,11,20,.35)}
.timeline-viewport{position:relative; overflow:hidden;}
.timeline-list{
  display:flex;
  gap:14px;
  list-style:none;
  padding:12px 16px;
  margin:0;
  align-items:center;
  width:max-content;
  animation: marquee 34s linear infinite;
}
.timeline.ready .timeline-list{animation-play-state:running}
.timeline-list:hover{animation-play-state:paused}
@keyframes marquee{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}
.t-item{display:inline-flex; align-items:center; gap:8px; white-space:nowrap}
.t-item a{color:rgba(234,241,255,.96); text-decoration:none; border-bottom:1px dashed rgba(124,240,210,.45)}
.t-item a:hover{border-bottom-color:rgba(124,240,210,.9)}
.t-date{font-size:12px; color:rgba(185,198,230,.95); border:1px solid var(--border); padding:4px 8px; border-radius:999px; background:rgba(255,255,255,.03)}
.t-tag{font-size:12px; color:rgba(234,241,255,.92); border:1px solid var(--border); padding:4px 8px; border-radius:999px; background:rgba(106,166,255,.10)}

.section{
  margin-top:22px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(15,27,51,.50);
  box-shadow:0 18px 50px rgba(0,0,0,.24);
  overflow:hidden;
}
.section-inner{padding:22px}
.section h2{margin:0 0 10px; font-size:20px}
.section h3{margin:18px 0 8px; font-size:16px}
.section p{margin:10px 0; color:rgba(234,241,255,.92)}
.section .muted{color:var(--muted)}

.grid2{display:grid; grid-template-columns: 1fr 1fr; gap:14px}
.card{
  border:1px solid var(--border);
  border-radius:16px;
  background:rgba(255,255,255,.03);
  padding:14px;
}
.card h3{margin:0 0 8px}

.table-wrap{overflow:auto; border-radius:14px; border:1px solid var(--border)}
.table{width:100%; border-collapse:collapse; min-width:760px; background:rgba(7,11,20,.45)}
.table th,.table td{padding:12px 12px; border-bottom:1px solid var(--border); vertical-align:top}
.table th{font-size:13px; text-align:left; color:rgba(234,241,255,.95); background:rgba(106,166,255,.10)}
.table td{color:rgba(234,241,255,.92); font-size:14px}

.notice{
  border-left:4px solid var(--brand2);
  background:rgba(124,240,210,.08);
  padding:12px 12px;
  border-radius:14px;
  color:rgba(234,241,255,.95);
}

.faq{
  display:grid;
  gap:10px;
}
.details{
  border:1px solid var(--border);
  background:rgba(255,255,255,.03);
  border-radius:16px;
  padding:12px 14px;
}
.details summary{
  cursor:pointer;
  font-weight:800;
  list-style:none;
}
.details summary::-webkit-details-marker{display:none}
.details .ans{color:var(--muted); margin-top:8px}

.breadcrumb{
  padding:12px 0 0;
  font-size:12.5px;
  color:rgba(185,198,230,.95);
}
.breadcrumb a{color:rgba(185,198,230,.95); text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}

/* Footer */
.site-footer{
  border-top:1px solid var(--border);
  background:rgba(7,11,20,.78);
  padding:22px 0;
}
.footer-grid{
  display:grid; grid-template-columns: 1.2fr .8fr; gap:12px;
  align-items:start;
}
.footer-grid p{margin:0; color:var(--muted); font-size:13px}
.footer-nav{
  display:flex; flex-wrap:wrap; gap:10px; justify-content:flex-end;
}
.footer-nav a{
  text-decoration:none;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.03);
  color:rgba(234,241,255,.92);
  font-size:13px;
}
.footer-nav a:hover{background:rgba(255,255,255,.06)}

/* Utilities */
.tag{
  display:inline-flex; align-items:center; gap:7px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.03);
  color:rgba(234,241,255,.92);
  font-size:12.5px;
}
.tag b{color:var(--brand2)}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-nav{justify-content:flex-start}
  .grid2{grid-template-columns:1fr}
}

@media (max-width: 760px){
  .nav{display:none;}
  .menu-btn{display:inline-flex;}
  .nav.open{
    position:absolute;
    top:64px;
    right:18px;
    left:18px;
    display:flex;
    flex-direction:column;
    background:rgba(7,11,20,.92);
    border:1px solid var(--border);
    border-radius:16px;
    padding:10px;
  }
  .nav.open a{padding:12px 12px;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
}