/* ============================================
   受講証明書LP (jukoshomei.html) 専用スタイル
   配色: 紺青 #1B4C8C × 金 #B8862B (2026/7確定)
   色変更は:rootのCSS変数を編集
   ============================================ */

:root{
  --green:#1B4C8C; --green-dark:#123763; --green-deep:#0C2747;
  --mint:#EAF1F9; --mint-line:#C2D6EC;
  --gold:#B8862B; --gold-pale:#F5EEDC;
  --ink:#232B33; --ink-soft:#5A6673; --ink-faint:#8B95A0;
  --paper:#FFFFFF; --bg:#F7F9FB; --line:#DDE3EA;
  --sans:'Noto Sans JP',sans-serif; --serif:'Shippori Mincho',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.8;font-size:15px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--green);font-weight:700;margin-bottom:10px}
h2{font-family:var(--serif);font-size:24px;font-weight:700;line-height:1.5;margin-bottom:8px}
.lead{color:var(--ink-soft);font-size:14px;margin-bottom:28px}
section{padding:56px 0}
.note{font-size:12px;color:var(--ink-faint);line-height:1.7}
.btn{display:inline-block;text-align:center;border-radius:8px;padding:14px 28px;font-weight:700;font-size:15px;transition:opacity .15s}
.btn:hover{opacity:.85}
.btn-primary{background:var(--green);color:#fff}
.btn-ghost{background:#fff;color:var(--green-dark);border:1.5px solid var(--green)}

/* sample banner */

.sample-banner strong{color:#F5C518}

/* header */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.header-in{max-width:1000px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:700;font-size:16px;color:var(--green-dark)}
.logo span{font-size:11px;font-weight:500;color:var(--ink-faint);margin-left:8px}
.header-cta{font-size:13px;background:var(--green);color:#fff;padding:8px 16px;border-radius:6px;font-weight:700}

/* hero */
.hero{background:linear-gradient(180deg,var(--mint) 0%,#F2F9F5 100%);padding:56px 0 48px}
.hero-grid{display:grid;gap:32px}
.hero-copy .eyebrow{color:var(--green-dark)}
.hero h1{font-family:var(--serif);font-size:30px;line-height:1.55;color:var(--green-deep);margin-bottom:14px}
.hero-sub{font-size:15px;color:var(--green-dark);margin-bottom:20px}
.hero-stats{display:flex;gap:20px;margin-bottom:24px}
.stat{border-left:3px solid var(--gold);padding-left:12px}
.stat b{display:block;font-family:var(--serif);font-size:22px;color:var(--green-deep);line-height:1.3}
.stat small{font-size:12px;color:var(--ink-soft)}
.hero-actions{display:flex;flex-direction:column;gap:10px}

/* certificate mock */
.cert{background:#FDFDFB;border:1px solid #D8D2C0;border-radius:4px;padding:26px 22px;box-shadow:0 8px 28px rgba(10,74,59,.12);position:relative;max-width:400px;margin:0 auto}
.cert::before{content:"";position:absolute;inset:8px;border:1px solid var(--gold);border-radius:2px;pointer-events:none;opacity:.5}
.cert-title{font-family:var(--serif);text-align:center;font-size:20px;letter-spacing:.35em;color:var(--ink);margin-bottom:4px}
.cert-en{text-align:center;font-size:9px;letter-spacing:.2em;color:var(--ink-faint);margin-bottom:18px}
.cert-name{font-family:var(--serif);font-size:16px;border-bottom:1px solid var(--ink-soft);padding-bottom:4px;margin-bottom:14px}
.cert-name small{font-size:11px;color:var(--ink-faint);font-family:var(--sans)}
.cert-body{font-size:12px;color:var(--ink-soft);margin-bottom:16px}
.cert-table{width:100%;font-size:12px;border-collapse:collapse;margin-bottom:18px}
.cert-table td{padding:5px 0;border-bottom:1px dashed var(--line)}
.cert-table td:first-child{color:var(--ink-faint);width:88px}
.cert-table b{color:var(--green-dark)}
.cert-foot{display:flex;justify-content:space-between;align-items:flex-end}
.cert-foot .issuer{font-size:11px;color:var(--ink-soft);line-height:1.6}
.cert-seal{width:46px;height:46px;border:2px solid #B0452F;border-radius:3px;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:10px;color:#B0452F;text-align:center;line-height:1.3;flex-shrink:0}
.cert-caption{text-align:center;font-size:11px;color:var(--ink-faint);margin-top:12px}

/* use cases */
.usecase-grid{display:grid;gap:14px}
.usecase{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px}
.usecase-tag{display:inline-block;font-size:11px;font-weight:700;color:var(--green-dark);background:var(--mint);border-radius:20px;padding:3px 12px;margin-bottom:10px}
.usecase h3{font-size:16px;font-weight:700;margin-bottom:6px}
.usecase p{font-size:13px;color:var(--ink-soft)}
.usecase blockquote{margin-top:12px;padding:10px 14px;background:var(--bg);border-left:3px solid var(--mint-line);font-size:12px;color:var(--ink-soft);border-radius:0 6px 6px 0}
.disclaimer{margin-top:20px;padding:14px 18px;background:var(--gold-pale);border-radius:8px;font-size:12px;color:#6B5B2E;line-height:1.7}

/* contents & steps */
.split{display:grid;gap:36px}
.spec-box{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}
.spec-box ul{list-style:none}
.spec-box li{padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px;display:flex;gap:10px;align-items:baseline}
.spec-box li:last-child{border-bottom:none}
.spec-box li::before{content:"✓";color:var(--green);font-weight:700}
.spec-box li b{color:var(--green-dark)}
.steps{display:flex;gap:8px;align-items:stretch;margin-top:8px}
.step{flex:1;background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 10px;text-align:center}
.step.hl{border:1.5px solid var(--green);background:var(--mint)}
.step b{display:block;font-family:var(--serif);font-size:15px;color:var(--green-deep);margin-bottom:4px}
.step small{font-size:11px;color:var(--ink-soft);line-height:1.5;display:block}
.step-arrow{align-self:center;color:var(--ink-faint)}

/* compare */
.compare{display:grid;gap:12px}
.compare-card{border-radius:10px;padding:22px}
.compare-card.them{background:#fff;border:1px solid var(--line)}
.compare-card.us{background:var(--green);color:#fff}
.compare-card h3{font-size:14px;font-weight:700;margin-bottom:12px;opacity:.85}
.compare-card .price{font-family:var(--serif);font-size:26px;margin-bottom:10px}
.compare-card.them .price{color:var(--ink-soft)}
.compare-card ul{list-style:none;font-size:13px}
.compare-card li{padding:4px 0}
.compare-card.them li::before{content:"− ";color:var(--ink-faint)}
.compare-card.us li::before{content:"◎ ";color:#9FE1CB}

/* seminars */
.sem-grid{display:grid;gap:14px}
.sem-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .15s}
.sem-card:hover{box-shadow:0 4px 16px rgba(10,74,59,.12)}
.sem-thumb{aspect-ratio:16/9;display:block;background:#E4EDE9}
.sem-body{padding:16px;flex:1;display:flex;flex-direction:column;gap:8px}
.sem-body h3{font-size:14px;font-weight:700;line-height:1.5}
.sem-meta{font-size:12px;color:var(--ink-soft)}
.sem-badges{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto}
.badge{font-size:10px;font-weight:700;padding:3px 10px;border-radius:20px}
.badge-use{background:var(--mint);color:var(--green-dark)}
.badge-rank{background:var(--gold-pale);color:#8A6A1E}
.sem-more{text-align:center;margin-top:24px}

/* facility */
.facility{background:var(--mint)}
.facility-box{background:#fff;border-radius:12px;padding:26px 22px}
.facility-box ul{list-style:none;margin:14px 0 18px}
.facility-box li{padding:8px 0;font-size:14px;display:flex;gap:10px;align-items:baseline}
.facility-box li::before{content:"📄";font-size:14px}

/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.faq-item summary{padding:16px 18px;font-weight:700;font-size:14px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::before{content:"Q.";color:var(--green);font-family:var(--serif);flex-shrink:0}
.faq-item summary::after{content:"＋";color:var(--ink-faint);flex-shrink:0;margin-left:auto}
.faq-item[open] summary::after{content:"−"}
.faq-item summary span{flex:1}
.faq-a{padding:0 18px 16px 44px;font-size:13px;color:var(--ink-soft)}

/* closing */
.closing{background:var(--green-deep);color:#fff;text-align:center}
.closing h2{color:#fff}
.closing .lead{color:#C2D6EC}
.closing-actions{display:flex;flex-direction:column;gap:12px;max-width:420px;margin:0 auto}
.closing .btn-ghost{background:transparent;color:#fff;border-color:#5DCAA5}

footer{background:#fff;border-top:1px solid var(--line);padding:24px 0;text-align:center;font-size:12px;color:var(--ink-faint)}

@media(min-width:768px){
  h2{font-size:28px}
  .hero h1{font-size:40px}
  .hero-grid{grid-template-columns:1.2fr 1fr;align-items:center}
  .hero-actions{flex-direction:row}
  .usecase-grid{grid-template-columns:repeat(4,1fr)}
  .split{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr 1fr}
  .sem-grid{grid-template-columns:repeat(3,1fr)}
  .closing-actions{flex-direction:row;justify-content:center;max-width:none}
}