:root{
  --ir-bg:#f6f2ea;
  --ir-paper:#fbf8f2;
  --ir-ink:#1a1d24;
  --ir-ink-soft:#3a3f48;
  --ir-muted:#6c6f77;
  --ir-rule:#d8d2c4;
  --ir-accent:#1f3a6b;
  --ir-accent-soft:#2f4e87;
  --ir-highlight:#e8e1d0;
  --ir-serif:'Noto Serif JP', serif;
  --ir-sans:'Noto Sans JP', sans-serif;
  --ir-max:1200px;
  --ir-shadow:0 1px 2px rgba(26,29,36,.05), 0 8px 24px rgba(26,29,36,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ir-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ir-ink);
  background:var(--ir-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--ir-serif);font-weight:600;color:var(--ir-ink);letter-spacing:.01em}
h1{font-size:2.4rem;line-height:1.3}
h2{font-size:1.75rem;line-height:1.35;margin-bottom:1rem}
h3{font-size:1.25rem;line-height:1.4;margin-bottom:.75rem}
p{margin-bottom:1rem;color:var(--ir-ink-soft)}
a{color:var(--ir-accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ir-accent-soft);text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.ir-container{max-width:var(--ir-max);margin:0 auto;padding:0 24px}
.ir-header{
  background:var(--ir-paper);
  border-bottom:1px solid var(--ir-rule);
  position:sticky;top:0;z-index:50;
}
.ir-nav{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:24px}
.ir-brand{display:flex;align-items:center;gap:12px;font-family:var(--ir-serif);font-weight:600;font-size:1.15rem;color:var(--ir-ink)}
.ir-brand i{color:var(--ir-accent);font-size:1.6rem}
.ir-brand-sub{display:block;font-family:var(--ir-sans);font-weight:400;font-size:.72rem;color:var(--ir-muted);letter-spacing:.04em}
.ir-menu{display:flex;gap:28px;list-style:none;align-items:center}
.ir-menu a{color:var(--ir-ink-soft);font-size:.95rem;font-weight:500}
.ir-menu a:hover{color:var(--ir-accent);text-decoration:none}
.ir-dropdown{position:relative}
.ir-dropdown-toggle{cursor:pointer;display:flex;align-items:center;gap:6px;background:none;border:none;font:inherit;color:var(--ir-ink-soft);padding:0}
.ir-dropdown-panel{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(6px);
  background:var(--ir-paper);border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow);
  min-width:320px;padding:12px;opacity:0;visibility:hidden;transition:all .2s ease;z-index:10;
}
.ir-dropdown:hover .ir-dropdown-panel,.ir-dropdown:focus-within .ir-dropdown-panel{
  opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);
}
.ir-dropdown-panel a{display:block;padding:10px 12px;font-size:.9rem;border-bottom:1px solid var(--ir-rule)}
.ir-dropdown-panel a:last-child{border-bottom:0}
.ir-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;background:var(--ir-accent);color:#fff;
  font-weight:500;font-size:.92rem;border:1px solid var(--ir-accent);
  transition:all .2s ease;
}
.ir-cta:hover{background:var(--ir-accent-soft);color:#fff;text-decoration:none}
.ir-cta-ghost{background:transparent;color:var(--ir-accent)}
.ir-cta-ghost:hover{background:var(--ir-accent);color:#fff}
.ir-burger{display:none;background:none;border:none;font-size:1.5rem;color:var(--ir-ink);cursor:pointer}

.ir-hero{padding:80px 0}
.ir-hero-inner{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.95fr);
  gap:60px;align-items:center;
}
.ir-hero-inner > *{min-width:0}
.ir-hero-kicker{
  display:inline-block;font-size:.78rem;font-weight:500;letter-spacing:.18em;
  color:var(--ir-accent);text-transform:uppercase;border-left:3px solid var(--ir-accent);
  padding-left:10px;margin-bottom:18px;
}
.ir-hero h1{font-size:clamp(2.6rem,4vw,4rem);line-height:1.22;margin-bottom:20px}
.ir-hero-lede{font-size:1.08rem;color:var(--ir-ink-soft);max-width:54ch;margin-bottom:28px}
.ir-hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.ir-hero-media{
  position:relative;border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow);
  max-width:520px;justify-self:end;
}
.ir-hero-media img{width:100%;display:block}
.ir-hero-caption{
  position:absolute;bottom:18px;left:18px;background:rgba(251,248,242,.95);
  padding:10px 14px;font-size:.82rem;color:var(--ir-ink);border-left:3px solid var(--ir-accent);
  max-width:calc(100% - 36px);
}

.ir-section{padding:80px 0;border-top:1px solid var(--ir-rule)}
.ir-section-head{display:grid;grid-template-columns:1fr 2fr;gap:40px;margin-bottom:48px}
.ir-section-label{font-size:.8rem;letter-spacing:.2em;color:var(--ir-accent);text-transform:uppercase;font-weight:600}
.ir-section-head h2{margin-top:10px}
.ir-section-lead{color:var(--ir-ink-soft);font-size:1rem}

.ir-about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ir-about-media{border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow)}

.ir-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ir-card{
  background:var(--ir-paper);border:1px solid var(--ir-rule);
  transition:transform .25s ease, box-shadow .25s ease;
}
.ir-card:hover{transform:translateY(-3px);box-shadow:var(--ir-shadow)}
.ir-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.ir-card-body{padding:22px}
.ir-card-meta{font-size:.78rem;color:var(--ir-muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.ir-card h3{font-size:1.15rem;margin-bottom:12px}
.ir-card h3 a{color:var(--ir-ink)}
.ir-card h3 a:hover{color:var(--ir-accent);text-decoration:none}
.ir-card-excerpt{font-size:.92rem;color:var(--ir-ink-soft);margin-bottom:14px}
.ir-card-more{font-size:.88rem;color:var(--ir-accent);font-weight:500}

.ir-pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ir-pillar{
  padding:28px;background:var(--ir-paper);border:1px solid var(--ir-rule);
  transition:border-color .2s ease;
}
.ir-pillar:hover{border-color:var(--ir-accent)}
.ir-pillar i{font-size:2rem;color:var(--ir-accent);margin-bottom:14px;display:block}
.ir-pillar h3{font-size:1.05rem;margin-bottom:10px}
.ir-pillar p{font-size:.9rem;margin-bottom:0}

.ir-mission{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ir-mission blockquote{
  font-family:var(--ir-serif);font-size:1.35rem;line-height:1.7;
  color:var(--ir-ink);border-left:3px solid var(--ir-accent);padding:12px 0 12px 24px;
  margin-bottom:22px;
}

.ir-methodology{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.ir-method{
  padding:32px 28px;background:var(--ir-paper);border:1px solid var(--ir-rule);
  position:relative;
}
.ir-method-num{
  font-family:var(--ir-serif);font-size:2.2rem;color:var(--ir-accent);
  display:block;margin-bottom:10px;font-weight:600;
}

.ir-closing{
  background:var(--ir-highlight);padding:72px 48px;text-align:center;
  border:1px solid var(--ir-rule);
}
.ir-closing h2{margin-bottom:14px}
.ir-closing p{max-width:60ch;margin:0 auto 24px}

.ir-footer{
  background:#15181f;color:#c9ccd2;padding:56px 0 0;border-top:4px solid var(--ir-accent);
}
.ir-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:40px}
.ir-footer h4{color:#fff;font-size:1rem;margin-bottom:18px;font-family:var(--ir-serif)}
.ir-footer a{color:#c9ccd2}
.ir-footer a:hover{color:#fff;text-decoration:none}
.ir-footer-item{display:flex;gap:12px;margin-bottom:12px;font-size:.92rem;align-items:flex-start}
.ir-footer-item i{color:var(--ir-accent-soft);font-size:1.1rem;margin-top:3px;flex-shrink:0}
.ir-footer ul{list-style:none}
.ir-footer ul li{margin-bottom:10px;font-size:.92rem}
.ir-footer-copy{
  border-top:1px solid #2a2e37;padding:22px 0;text-align:center;
  font-size:.85rem;color:#8a8d94;
}

.ir-page-hero{padding:64px 0 48px;background:var(--ir-paper);border-bottom:1px solid var(--ir-rule)}
.ir-crumbs{font-size:.82rem;color:var(--ir-muted);margin-bottom:14px}
.ir-crumbs a{color:var(--ir-muted)}
.ir-page-hero h1{font-size:2.4rem;margin-bottom:14px}
.ir-page-hero p{max-width:70ch;color:var(--ir-ink-soft)}

.ir-contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:56px}
.ir-contact-card{
  padding:28px;background:var(--ir-paper);border:1px solid var(--ir-rule);
  text-align:left;
}
.ir-contact-card i{font-size:1.8rem;color:var(--ir-accent);margin-bottom:14px;display:block}
.ir-contact-card h3{font-size:1rem;margin-bottom:8px}
.ir-contact-card p{font-size:.94rem;margin-bottom:0;color:var(--ir-ink-soft)}

.ir-form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;margin-bottom:56px}
.ir-form-card{
  padding:36px;background:var(--ir-paper);border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow);
}
.ir-form-card h2{font-size:1.5rem;margin-bottom:20px}
.ir-field{margin-bottom:18px}
.ir-field label{display:block;font-size:.9rem;font-weight:500;margin-bottom:6px;color:var(--ir-ink)}
.ir-field input,.ir-field textarea{
  width:100%;padding:12px 14px;font:inherit;
  background:#fff;border:1px solid var(--ir-rule);color:var(--ir-ink);
  transition:border-color .15s ease;
}
.ir-field input:focus,.ir-field textarea:focus{outline:none;border-color:var(--ir-accent)}
.ir-field textarea{resize:vertical;min-height:130px}
.ir-check{display:flex;gap:10px;align-items:flex-start;margin-bottom:20px;font-size:.9rem}
.ir-check input{margin-top:5px}
.ir-form-note{font-size:.85rem;color:var(--ir-muted);margin-top:14px}
.ir-err{color:#a6262f;font-size:.82rem;margin-top:4px;display:none}
.ir-err.active{display:block}

.ir-map{width:100%;height:480px;border:1px solid var(--ir-rule);margin-bottom:18px}
.ir-map-ext{font-size:.9rem}

.ir-modal{
  position:fixed;inset:0;background:rgba(21,24,31,.55);
  display:none;align-items:center;justify-content:center;z-index:200;padding:20px;
}
.ir-modal.active{display:flex}
.ir-modal-body{
  background:var(--ir-paper);padding:36px 32px;max-width:420px;
  border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow);text-align:center;
}
.ir-modal-body i{font-size:2.4rem;color:var(--ir-accent);margin-bottom:12px}
.ir-modal-body h3{margin-bottom:10px}
.ir-modal-body p{font-size:.95rem;margin-bottom:0}

.ir-cookie{
  position:fixed;bottom:20px;left:20px;right:20px;max-width:560px;margin:0 auto;
  background:var(--ir-paper);border:1px solid var(--ir-rule);box-shadow:var(--ir-shadow);
  padding:22px 24px;z-index:150;display:none;
}
.ir-cookie.active{display:block}
.ir-cookie h4{font-size:1rem;margin-bottom:8px;font-family:var(--ir-serif)}
.ir-cookie p{font-size:.88rem;margin-bottom:14px}
.ir-cookie-actions{display:flex;gap:12px;flex-wrap:wrap}
.ir-cookie-actions button{
  font:inherit;padding:9px 18px;border:1px solid var(--ir-accent);cursor:pointer;
  font-size:.9rem;font-weight:500;transition:all .2s ease;
}
.ir-btn-accept{background:var(--ir-accent);color:#fff}
.ir-btn-accept:hover{background:var(--ir-accent-soft)}
.ir-btn-reject{background:transparent;color:var(--ir-accent)}
.ir-btn-reject:hover{background:var(--ir-highlight)}

.ir-article{max-width:820px;margin:0 auto;padding:56px 24px 32px}
.ir-article-meta{
  font-size:.85rem;color:var(--ir-muted);margin-bottom:16px;
  padding-bottom:14px;border-bottom:1px solid var(--ir-rule);
}
.ir-article h1{font-size:2.2rem;line-height:1.35;margin-bottom:20px}
.ir-article-hero{margin:28px 0;border:1px solid var(--ir-rule)}
.ir-article-hero img{width:100%}
.ir-article h2{margin-top:36px;padding-top:18px;border-top:1px solid var(--ir-rule)}
.ir-article h3{margin-top:24px;color:var(--ir-accent)}
.ir-article ul,.ir-article ol{margin:0 0 1.2rem 1.4rem;color:var(--ir-ink-soft)}
.ir-article li{margin-bottom:.5rem}
.ir-article blockquote{
  border-left:3px solid var(--ir-accent);padding:8px 0 8px 20px;
  margin:22px 0;font-family:var(--ir-serif);color:var(--ir-ink);
}
.ir-pn{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:40px 0 0;
  border-top:1px solid var(--ir-rule);padding-top:28px;
}
.ir-pn a{
  display:block;padding:18px 20px;background:var(--ir-paper);border:1px solid var(--ir-rule);
}
.ir-pn a:hover{border-color:var(--ir-accent);text-decoration:none}
.ir-pn-label{font-size:.78rem;color:var(--ir-muted);letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px;display:block}
.ir-pn-title{font-family:var(--ir-serif);color:var(--ir-ink);font-size:.98rem}
.ir-pn-next{text-align:right}

.ir-list{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;padding:48px 0}

.ir-policy{max-width:820px;margin:0 auto;padding:56px 24px}
.ir-policy h2{margin-top:32px}
.ir-policy p,.ir-policy li{color:var(--ir-ink-soft)}
.ir-policy ul{margin:0 0 1.2rem 1.4rem}

.ir-reader-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px}
.ir-reader{padding:26px;background:var(--ir-paper);border:1px solid var(--ir-rule)}
.ir-reader img{width:100%;height:160px;object-fit:cover;margin-bottom:16px;border:1px solid var(--ir-rule)}
.ir-reader h3{font-size:1rem;margin-bottom:8px}
.ir-reader p{font-size:.9rem;margin-bottom:0}

.ir-achievements{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.ir-ach{padding:24px;text-align:center;background:var(--ir-paper);border:1px solid var(--ir-rule)}
.ir-ach-num{font-family:var(--ir-serif);font-size:2rem;color:var(--ir-accent);font-weight:600;display:block}
.ir-ach-label{font-size:.88rem;color:var(--ir-ink-soft)}
.ir-ach-note{text-align:center;font-size:.8rem;color:var(--ir-muted);margin-top:14px}

@media (max-width:960px){
  .ir-hero-inner,.ir-about-grid,.ir-mission,.ir-form-wrap{grid-template-columns:1fr;gap:32px}
  .ir-cards,.ir-pillars,.ir-methodology,.ir-contact-grid,.ir-reader-row,.ir-achievements,.ir-list{grid-template-columns:1fr 1fr;gap:20px}
  .ir-footer-grid,.ir-section-head{grid-template-columns:1fr;gap:28px}
  .ir-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--ir-paper);flex-direction:column;padding:16px;border-bottom:1px solid var(--ir-rule);gap:14px}
  .ir-menu.open{display:flex}
  .ir-burger{display:block}
  .ir-dropdown-panel{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;padding:0;margin-top:8px;min-width:0}
  .ir-nav{flex-wrap:wrap}
  .ir-hero h1{font-size:2rem}
  .ir-hero-media{max-width:none;justify-self:stretch}
  .ir-map{height:320px}
  .ir-pn{grid-template-columns:1fr}
  .ir-pn-next{text-align:left}
}
@media (max-width:560px){
  .ir-cards,.ir-pillars,.ir-methodology,.ir-contact-grid,.ir-reader-row,.ir-achievements,.ir-list{grid-template-columns:1fr}
  h1{font-size:1.8rem}
  .ir-section{padding:56px 0}
  .ir-closing{padding:48px 24px}
}

.ir-fade{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease}
.ir-fade.visible{opacity:1;transform:translateY(0)}