/* 禁則・改行調整（行末の一文字残りを防ぐ） */
body{word-break:keep-all;overflow-wrap:break-word;line-break:strict}
p,li,dd,dt,td,th,figcaption,summary,blockquote,.lead,.note{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance}
/* 横揺れ防止 */
html, body {
  overflow-x: hidden;
  width: 100%;
}

:root{
    --teal:#00E1DA; --teal-text:#189E86;
    --ink:#17242A; --ink-soft:#22383D; --ink-mute:#4C5C60; --ink-faint:#5E6E71; --ink-faintest:#AEB8B9;
    --red:#E23B2E; --red-hover:#C42B1F; --blue:#0EA39B; --blue-deep:#0B6E68; --blue-bg:#E3F7F5; --card-border:#DCE6F3;
    --teal-pale:#EAFBFA; --teal-deep:#0F6E77;
  }
  *{box-sizing:border-box}
  body{margin:0;background:#fff;color:var(--ink);font-family:'Noto Sans JP',sans-serif;-webkit-font-smoothing:antialiased}
  a{color:var(--blue);text-decoration:none}
  a:hover{color:var(--blue-deep)}
  img{max-width:100%;height:auto}
/*
  .site-header{position:sticky;top:0;z-index:50;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:20px 48px;border-bottom:1px solid rgba(23,36,42,0.08);flex-wrap:wrap}
  .logo-block{display:flex;flex-direction:column;align-items:flex-start;gap:4px;flex-shrink:0}
  .logo-block img{height:34px;width:auto;display:block}
  .logo-sub{font-size:14px;font-weight:400;letter-spacing:0.06em;color:var(--blue)}
  .header-right{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
  .nav-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
  .nav-link{font-size:14px;color:var(--teal-text);letter-spacing:0.02em;transition:color .15s ease}
  .nav-link:hover{color:#00CFC0;text-decoration:underline}
  .badge-link{font-size:14px;color:var(--blue);background:var(--blue-bg);padding:6px 14px;border-radius:999px;letter-spacing:0.02em;white-space:nowrap;transition:background .15s ease}
  .badge-link:hover{background:#DCE9FA;color:var(--blue)}
  .cta-outline{font-size:14px;padding:9px 20px;border:1px solid var(--teal-deep);border-radius:999px;color:var(--teal-text);white-space:nowrap;transition:background .15s ease,color .15s ease}
  .cta-outline:hover{background:var(--teal-deep);color:#fff}
  .hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:34px;height:34px;padding:0;border:none;background:transparent;cursor:pointer}
  .hamburger span{display:block;width:100%;height:2px;background:var(--ink);border-radius:2px}
  .mobile-panel{display:none;flex-direction:column;gap:2px;width:100%;border-top:1px solid rgba(23,36,42,0.08);margin-top:12px;padding-top:8px}
  .mobile-panel a{font-size:18px;color:var(--teal-text);padding:10px 4px;border-bottom:1px solid rgba(23,36,42,0.06)}
  .mobile-panel.open{display:flex}
*/
  .hero-banner{position:relative;padding:76px 56px 44px;background:linear-gradient(135deg,#00C6C0,#17798A);overflow:hidden}
  .banner-circle{position:absolute;border-radius:50%;pointer-events:none}
  .circle-tl{top:-8%;left:-6%;width:34%;aspect-ratio:1;border:1.5px solid rgba(255,255,255,0.45)}
  .circle-br{bottom:-18%;right:-4%;width:42%;aspect-ratio:1;border:1.5px solid rgba(255,255,255,0.38)}
  .hero-inner{position:relative;z-index:1;max-width:900px;margin:0 auto;text-align:center}
  .hero-eyebrow{font-size:14px;letter-spacing:0.25em;color:#fff;font-weight:700;text-shadow:0 1px 6px rgba(11,90,86,.5);margin-bottom:14px}
  .hero-title{margin:0;font-family:'Zen Old Mincho',serif;font-weight:700;font-size:44px;letter-spacing:0.06em;line-height:1.65;color:#fff;text-shadow:0 2px 14px rgba(11,90,86,0.35),0 1px 2px rgba(11,90,86,0.25)}
  .hero-sub{margin-top:10px;font-size:14px;letter-spacing:0.2em;color:#fff;font-weight:700;text-shadow:0 1px 6px rgba(11,90,86,.5)}

  .stats-strip{background:var(--blue-bg);display:flex;justify-content:center;gap:36px;flex-wrap:wrap;padding:22px 24px}
  .stat-item{font-size:18px;color:var(--ink-mute);text-align:center}
  .stat-item strong{display:block;font-size:22px;color:var(--blue);font-weight:700;font-family:'Shippori Mincho',serif}

  .breadcrumb{padding:16px 56px;border-bottom:1px solid rgba(23,36,42,0.06);font-size:14px;color:var(--ink-faint);display:flex;align-items:center;gap:8px;flex-wrap:wrap}

  .article{padding:72px 56px;max-width:1040px;margin:0 auto}
  .article p{margin:0 0 26px;font-size:18px;line-height:2.05;color:var(--ink-soft);word-break:keep-all;overflow-wrap:break-word;text-wrap:pretty}
  .article h2{margin:52px 0 22px;font-family:'Shippori Mincho',serif;font-weight:600;font-size:30px;line-height:1.6;color:var(--ink)}
  .article h2:first-of-type{margin-top:0}

  .saitama-hero {
  padding-top: 44px;
  padding-bottom: 0;
  }

  .saitama-hero img {
    width: 100%;
    border-radius: 4px;
  }
  .article .welcome-message {
    font-size: 22px;
    font-weight: 700;
    color: var(--teal-text);
    margin-bottom: 18px;
  }
  .trial-lesson-image {
  display: block;
  width: 100%;
  max-width: 560px;
  margin: 8px auto 24px;
  border-radius: 4px;
  }
  .divider{border:none;border-top:1px solid var(--card-border);margin:44px 0}
  .insight-card{background:var(--blue-bg);padding:36px;border-radius:4px;margin-bottom:44px}
  .insight-card p{font-size:18px;line-height:2;color:var(--ink-soft);word-break:keep-all;overflow-wrap:break-word;text-wrap:pretty;margin-bottom:0}

  .chip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:8px}
  .chip{display:flex;align-items:center;gap:10px;background:#F4F8F9;border-radius:6px;padding:15px 16px;font-size:18px;color:var(--ink-soft)}
  .chip .dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--teal)}

  .reason-grid{display:flex;flex-direction:column;gap:12px;margin-bottom:8px}
  .reason-card{display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--card-border);border-radius:4px;padding:18px 20px}
  .reason-card .check{flex:none;width:25px;height:25px;border-radius:50%;background:var(--teal-text);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}
  .reason-card .txt{font-size:18px;color:var(--ink-soft);line-height:1.8}

  .why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:8px;align-items:stretch}
  .why-card{background:#fff;border:1px solid var(--card-border);border-radius:4px;padding:24px 18px;text-align:center;display:flex;flex-direction:column;align-items:center;min-width:0}
  .why-card p{word-break:normal;overflow-wrap:break-word;width:100%}
  .why-icon{width:46px;height:46px;margin:0 auto 14px;border-radius:50%;background:var(--teal-text);display:flex;align-items:center;justify-content:center}
  .why-card h3{font-size:22px;margin:0 0 8px;font-weight:700;font-family:'Shippori Mincho',serif;color:var(--ink)}
  .why-card p{font-size:18px;color:var(--ink-mute);margin:0;line-height:1.75;flex:1}

  .method-list{display:flex;flex-direction:column;gap:20px;margin-bottom:8px}
  .method-item{display:grid;grid-template-columns:150px minmax(0,1fr);gap:20px;align-items:center;padding:18px;background:#fff;border:1px solid var(--card-border);border-radius:4px}
  .method-media{aspect-ratio:1;border-radius:4px;overflow:hidden}
  .method-media img{width:100%;height:100%;object-fit:cover}
  .method-item-title{font-family:'Shippori Mincho',serif;font-size:22px;font-weight:700;color:var(--blue);margin-bottom:8px}
  .method-item p{margin:0;font-size:18px;line-height:1.9;color:var(--ink-mute);overflow-wrap:break-word}
  .method-link{display:inline-flex;align-items:center;gap:4px;font-size:18px;color:var(--teal-text);font-weight:700;margin-top:10px;transition:color .15s ease,gap .15s ease}
  .method-link:hover{color:var(--teal-deep);gap:8px}

  .staff-frame{border-radius:4px;overflow:hidden;margin-bottom:12px;aspect-ratio:3/2;max-width:560px;margin-left:auto;margin-right:auto}
  .staff-frame img{width:100%;height:118%;object-fit:cover;object-position:center 12%;display:block}
  .staff-caption{text-align:center;font-size:18px;color:var(--ink-faint);margin:0 0 8px}

  .voice-grid{display:flex;flex-direction:column;gap:16px;margin-bottom:8px}
  .voice-card{background:#fff;border:1px solid var(--card-border);border-radius:4px;padding:26px 28px}
  .voice-card p.quote{font-size:18px;color:var(--ink-soft);line-height:2;margin:0 0 14px}
  .voice-card p.who{font-size:18px;color:var(--teal-text);font-weight:700;margin:0}

  .flow-label{font-size:18px;color:var(--teal-text);font-weight:700;margin:0 0 12px;letter-spacing:0.02em}
  .flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:24px}
  .flow-step{text-align:center}
  .flow-photo{position:relative;margin-bottom:6px}
  .flow-photo img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:4px}
  .flow-badge{position:absolute;top:6px;left:6px;width:21px;height:21px;border-radius:50%;background:var(--teal-text);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center}
  .flow-name{font-size:18px;color:var(--ink-mute)}
  .check-list{list-style:none;padding:0;margin:0 0 28px;display:flex;flex-direction:column;gap:9px}
  .check-list li{font-size:18px;color:var(--ink-soft);padding-left:22px;position:relative}
  .check-list li::before{content:"";position:absolute;left:2px;top:7px;width:6px;height:6px;background:var(--teal-text);border-radius:50%}

  .locality-band{background:var(--teal-pale);color:var(--ink-soft);padding:56px;margin:0 -56px 44px;border-radius:4px}
  .locality-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center}
  .locality-media{border-radius:4px;overflow:hidden}
  .locality-band p{font-size:18px;color:var(--ink-soft);line-height:2;margin:0 0 14px;overflow-wrap:break-word}
  .check-list-white{list-style:none;padding:0;margin:18px 0 24px;display:flex;flex-direction:column;gap:12px}
  .check-list-white li{font-size:18px;color:var(--ink-soft);padding-left:30px;position:relative;line-height:1.6}
  .check-list-white li::before{content:"✓";position:absolute;left:0;top:3px;font-size:14px;color:#fff;background:var(--teal-text);width:19px;height:19px;border-radius:50%;display:flex;align-items:center;justify-content:center}
  .area-label{font-size:18px;color:var(--teal-text);font-weight:700;letter-spacing:0.04em;margin-bottom:10px}
  .area-chips{display:flex;flex-wrap:wrap;gap:8px}
  .area-chip{background:#fff;border:1px solid var(--card-border);border-radius:20px;font-size:18px;padding:8px 16px;color:var(--teal-text);font-weight:500}

  .briefing-panel{background:#F4F8F9;border-radius:4px;padding:32px;display:grid;grid-template-columns:1fr;gap:28px;margin-bottom:8px}
  .briefing-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
  .briefing-list li{font-size:18px;color:var(--ink-soft);padding-left:26px;position:relative;line-height:1.85;overflow-wrap:break-word;text-wrap:pretty}
  .briefing-list li::before{content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;background:var(--teal-text);border-radius:50%}
  .briefing-panel>*{min-width:0}
  .briefing-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .briefing-cols>div{min-width:0}
  .briefing-card{background:#fff;border:1px solid var(--card-border);border-radius:6px;padding:26px 28px}
  .briefing-card-title{font-size:22px;font-weight:700;font-family:'Shippori Mincho B1',serif;color:var(--ink);margin:0 0 18px;padding-bottom:14px;border-bottom:2px solid var(--teal-text)}
  .briefing-side{background:#fff;border-radius:4px;padding:26px;border-top:2px solid var(--teal-text);margin-top:24px}
  .briefing-side h3{font-size:18px;margin:0 0 10px;color:var(--teal-text);font-weight:700;display:flex;align-items:center;gap:6px}
  .briefing-side p{font-size:18px;color:var(--ink-mute);margin:0 0 14px;line-height:1.9}
  .pref-label{font-size:14px;color:var(--ink-faint);font-weight:700;letter-spacing:0.04em;margin-bottom:8px}
  .pref-chips{display:flex;flex-wrap:wrap;gap:8px}
  .pref-chip{background:#D8F1F3;border-radius:20px;font-size:18px;padding:8px 16px;color:var(--teal-text);font-weight:700}

  .faq-list{display:flex;flex-direction:column;gap:10px;margin-bottom:8px}
  .faq-list details{border:1px solid var(--card-border);border-radius:4px;background:#fff;overflow:hidden}
  .faq-list summary{display:flex;align-items:center;gap:14px;padding:18px 20px;cursor:pointer;font-size:18px;font-weight:700;color:var(--ink);list-style:none}
  .faq-q{flex:none;width:24px;height:24px;border-radius:50%;background:var(--teal-text);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
  .faq-a{padding:0 20px 20px 58px;font-size:18px;color:var(--ink-mute);line-height:1.85}

  .info-table{width:100%;border-collapse:collapse;margin-bottom:8px}
  .info-table th,.info-table td{text-align:left;padding:14px 0;border-bottom:1px solid var(--card-border);font-size:18px;line-height:1.85;color:var(--ink-soft);vertical-align:top}
  .info-table th{width:140px;color:var(--ink-mute);font-weight:500}

  .related-section{padding:0 56px 80px}
  .related-section h2{margin:0 0 24px;text-align:center;font-family:'Shippori Mincho',serif;font-weight:600;font-size:30px;color:var(--ink)}
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1100px;margin:0 auto}
  .related-card{display:block;background:#fff;border:1px solid var(--card-border);border-radius:4px;padding:22px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
  .related-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(23,36,42,0.1);border-color:var(--blue)}
  .related-card-title{font-family:'Shippori Mincho',serif;font-size:18px;color:var(--ink);margin-bottom:8px}
  .related-card-cta{font-size:14px;color:var(--blue)}

  .cta-banner{padding:64px 56px;background:linear-gradient(135deg,#00C6C0,#17798A);text-align:center}
  .cta-banner h2{margin:0 0 14px;font-family:'Shippori Mincho',serif;font-weight:700;font-size:30px;color:#fff;text-shadow:0 2px 12px rgba(11,90,86,0.4),0 1px 2px rgba(11,90,86,0.3)}
  .cta-banner p{margin:0 0 28px;font-size:18px;color:#fff;text-shadow:0 2px 10px rgba(11,90,86,0.35)}
  .cta-button{display:inline-block;font-size:18px;padding:17px 42px;background:var(--red);color:#fff;border-radius:999px;letter-spacing:0.03em;transition:background .15s ease,transform .15s ease;text-align:center;min-width:220px}
  .cta-button:hover{background:var(--red-hover);color:#fff;transform:translateY(-2px)}
  .cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:28px 0 0}
  .cta-detail-link{text-align:center;margin:10px 0 0;font-size:18px}
  .cta-detail-link a{color:var(--teal-text);font-weight:700;border-bottom:1px solid currentColor;padding-bottom:2px}
  .cta-detail-link a:hover{color:var(--teal-deep)}
  .cta-detail-link-light a{color:#fff}
  .cta-detail-link-light a:hover{color:#fff;opacity:.85}
  .br-pc{display:inline}
  .cta-note{font-size:14px;color:var(--ink-faint);text-align:center;margin:14px 0 0;letter-spacing:0.02em}
  .cta-note-light{color:#fff;opacity:.92;text-shadow:0 1px 6px rgba(11,90,86,0.35)}
  .cta-button-outline{display:inline-block;font-size:18px;padding:15.5px 36px;border:1.5px solid #fff;color:#fff;border-radius:999px;letter-spacing:0.03em;transition:background .15s ease,color .15s ease;text-align:center;min-width:220px}
  .cta-button-outline:hover{background:#fff;color:var(--ink)}
  .cta-button-teal{display:inline-block;font-size:18px;padding:15.5px 40px;background:#fff;color:var(--red);border:1.5px solid var(--red);border-radius:999px;letter-spacing:0.03em;transition:background .15s ease,color .15s ease,transform .15s ease;text-align:center;min-width:216px}
  .cta-button-teal:hover{background:var(--red);color:#fff;transform:translateY(-2px)}

  .site-footer{padding:48px 56px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px}
  .site-footer img{height:44px;width:auto;display:block;margin-bottom:14px}
  .footer-org{font-family:'Shippori Mincho',serif;font-size:18px;color:var(--ink);margin-bottom:10px}
  .site-footer p{margin:0 0 6px;font-size:18px;color:var(--ink-faint);line-height:1.8}
  .copyright{font-size:14px;color:var(--ink-faintest)}
  .footer-map{border-radius:4px;overflow:hidden;min-height:220px}
  .footer-map iframe{width:100%;height:100%;min-height:220px;border:0;display:block}
  .site-footer .footer-access {
    margin-bottom: 18px;
  }
  @media (max-width:979px){
    .related-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:1100px){
    .article{padding:64px 40px}
    .locality-band{margin:0 -40px 44px;padding:56px 40px}
  }
  @media (max-width:900px){
    .article{padding:56px 32px}
    .locality-band{margin:0 -32px 44px;padding:48px 32px}
    .method-item{grid-template-columns:120px 1fr;gap:16px}
    .flow-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:719px){
    /*
    .site-header{padding:14px 20px;gap:14px}
    .nav-links{display:none}
    .hamburger{display:flex}
*/

    .hero-banner{padding:56px 20px 36px}
    .hero-title{font-size:28px}
    .stats-strip{padding:18px 16px;gap:20px}
    .breadcrumb{padding:14px 20px}
    .article{padding:48px 20px}
    .br-pc{display:none}
    .article p{font-size:18px;line-height:1.95}
    .article h2{font-size:22px}
    .why-grid{grid-template-columns:1fr}
    .chip-grid{grid-template-columns:1fr}
    .method-item{grid-template-columns:1fr}
    .method-media{aspect-ratio:16/9}
    .flow-grid{grid-template-columns:repeat(2,1fr)}
    .locality-band{padding:36px 20px;margin:0 -20px 44px}
    .locality-grid{grid-template-columns:1fr}
    .briefing-panel{padding:22px}
    .briefing-cols{grid-template-columns:1fr !important}
    .briefing-card{padding:22px 20px}
    .faq-a{padding-left:18px}
    .related-section{padding:0 20px 48px}
    .related-grid{grid-template-columns:1fr}
    .cta-banner{padding:48px 20px}
    .site-footer{padding:40px 20px;grid-template-columns:1fr}
    .footer-map{min-height:260px}
    .footer-map iframe{min-height:260px}
    .info-table th{width:100px}
  }

/* ===== smartphone (≤479px) ===== */
@media (max-width:479px){
  .article,.faq-section,.related-section,.testimonials-section,.cta-banner,.site-footer,.breadcrumb,.hero-content,.hero-banner{padding-left:16px;padding-right:16px}
  .cta-buttons{flex-direction:column;gap:10px}
  .cta-button,.cta-button-outline,.inline-cta,.inline-cta-outline,.inline-cta-alt{width:100%;box-sizing:border-box;text-align:center}
  .related-grid,.figure-grid,.method-figures{grid-template-columns:1fr}
  img{max-width:100%;height:auto}
  table{display:block;overflow-x:auto}
}

  .lang-switch{display:flex;align-items:center;gap:8px;font-size:14px}
  .lang-switch a,.lang-switch span{color:var(--ink-faint);letter-spacing:.04em}
  .lang-switch a:hover{color:var(--teal-text)}
  .lang-switch .is-current{color:var(--teal-text);font-weight:700}
  .ja-note{font-size:14px;color:var(--ink-faint);margin-left:4px}
  .cta-banner .cta-note{color:#fff;opacity:.95;text-shadow:0 1px 6px rgba(11,90,86,.45);max-width:640px;margin-left:auto;margin-right:auto}