/* ===== 齋藤研究室ホームページ 共通スタイル（白ベース） ===== */
:root{
  --navy:#132241;
  --ink:#16213e;
  --muted:#5b6472;
  --orange:#ff6b35;
  --orange-deep:#c1441a;
  --teal:#00c2cb;
  --teal-deep:#036f77;
  --bg:#ffffff;
  --bg-soft:#f5f7fb;
  --card:#f8fafc;
  --border:rgba(15,30,60,0.10);
  --maxw:1180px;
  --radius:14px;
  --shadow: 0 10px 26px rgba(15,23,42,0.08);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
section{padding:72px 0;}
h1,h2,h3,h4{font-weight:700;letter-spacing:0.01em;margin:0 0 16px;color:var(--navy);}
h1{font-size:clamp(28px,4vw,46px);line-height:1.35;}
h2{font-size:clamp(22px,3vw,32px);}
h3{font-size:19px;}
h4{font-size:15px;}
p{margin:0 0 16px;color:var(--ink);}
.lead{color:var(--muted);font-size:17px;}
.eyebrow{
  display:inline-block;color:var(--teal-deep);font-weight:700;font-size:13px;
  letter-spacing:0.12em;text-transform:uppercase;margin-bottom:10px;
}

/* ---- Header / Nav ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  position:relative;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;object-fit:contain;flex:none;
}
.brand span{white-space:nowrap;}
.brand small{display:block;color:var(--muted);font-weight:400;font-size:11px;white-space:nowrap;}
.nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--ink);border-radius:8px;padding:8px 10px;font-size:18px;cursor:pointer;}
.main-nav{display:flex;gap:2px;flex-wrap:wrap;}
.main-nav a{
  padding:10px 13px;border-radius:8px;font-size:14.5px;color:var(--muted);font-weight:600;white-space:nowrap;
}
.main-nav a:hover,.main-nav a.active{color:var(--ink);background:var(--bg-soft);}
.header-actions{display:flex;align-items:center;gap:8px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 18px;border-radius:999px;font-weight:700;font-size:14px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:var(--navy);}
.btn-primary:hover{filter:brightness(1.05);}
.btn-outline{border-color:var(--border);color:var(--ink);}
.btn-outline:hover{background:var(--bg-soft);}
.btn-ghost{color:var(--muted);font-size:13px;padding:8px 10px;}
.btn-lg{padding:15px 30px;font-size:16px;}

/* ---- Hero ---- */
.hero{
  padding:64px 0 40px;
  background:
    radial-gradient(1100px 500px at 15% -10%, rgba(255,107,53,0.10), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(0,194,203,0.10), transparent 55%);
}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero-tag{font-weight:700;color:var(--teal-deep);font-size:19px;margin-bottom:14px;display:block;}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.hero-media img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);}
.hero-media{position:relative;}
.hero-stat{
  position:absolute;bottom:-18px;left:-18px;background:var(--bg);
  border:1px solid var(--border);border-radius:12px;padding:14px 18px;box-shadow:var(--shadow);
}
.hero-stat b{display:block;font-size:24px;color:var(--orange-deep);}
.hero-stat span{font-size:12.5px;color:var(--muted);}

/* ---- Page header (inner pages) ---- */
.page-header{
  padding:56px 0 36px;
  background:linear-gradient(180deg,var(--bg-soft),var(--bg));
  border-bottom:1px solid var(--border);
}
.page-header .eyebrow{color:var(--orange-deep);}
.breadcrumb{color:var(--muted);font-size:13px;margin-bottom:14px;}
.breadcrumb a:hover{color:var(--teal-deep);}

/* ---- Feature / cards ---- */
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.card h3{color:var(--navy);margin-bottom:10px;}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:0;}
.content-list{margin:14px 0 0;padding-left:20px;}
.content-list li{font-size:14.5px;color:var(--ink);line-height:1.7;margin-bottom:8px;}
.content-list li:last-child{margin-bottom:0;}
.card-icon{
  width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,53,0.12);color:var(--orange-deep);font-weight:800;margin-bottom:14px;font-size:18px;
}
.nav-cards a.card{display:block;transition:transform .15s ease, border-color .15s ease;}
.nav-cards a.card:hover{transform:translateY(-4px);border-color:var(--teal);}

/* ---- Research approach card (with image) ---- */
.approach-card{
  display:grid;grid-template-columns:280px 1fr;gap:0;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;margin-bottom:26px;box-shadow:var(--shadow);
}
.approach-card img{width:100%;height:100%;object-fit:contain;min-height:200px;background:var(--bg-soft);}
.approach-body{padding:26px 30px;}
.approach-num{
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;color:var(--teal-deep);margin-right:10px;
}
.approach-title{display:flex;align-items:center;margin-bottom:12px;}
.field-row{display:grid;grid-template-columns:120px 1fr;gap:8px 16px;font-size:14.5px;margin-bottom:8px;}
.field-row.field-row-wide{grid-template-columns:180px 1fr;}
.field-row b{color:var(--teal-deep);font-weight:700;}
.field-row span{color:var(--ink);}

/* ---- Basic research list ---- */
.basic-card{
  display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px 26px;margin-bottom:16px;
}
.basic-card .basic-icon{border-radius:12px;overflow:hidden;background:var(--bg-soft);}
.basic-card .basic-icon img{width:100%;height:100%;object-fit:contain;display:block;min-height:140px;}
.basic-card h3{margin-bottom:10px;color:var(--navy);font-size:17px;}
@media (max-width:960px){
  .basic-card{grid-template-columns:1fr;}
  .basic-card .basic-icon img{min-height:160px;}
}

/* ---- Divider image ---- */
.divider-image{
  border-radius:var(--radius);overflow:hidden;margin:8px 0 36px;border:1px solid var(--border);box-shadow:var(--shadow);
}

/* ---- Photo card (image + caption) ---- */
.photo-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.photo-card img{width:100%;height:280px;object-fit:cover;display:block;}
.photo-card .photo-body{padding:20px 22px;}
.photo-card .photo-date{
  display:block;font-size:12.5px;font-weight:700;color:var(--teal-deep);margin-bottom:6px;letter-spacing:0.02em;
}
.photo-card h3{margin:0 0 8px;font-size:17px;}
.photo-card p{margin:0;font-size:14.5px;color:var(--ink);}
@media (max-width:560px){
  .photo-card img{height:220px;}
}

/* ---- Key message band (breakthrough key callout) ---- */
.key-message{
  display:grid;grid-template-columns:380px 1fr;gap:38px;align-items:center;
  background:linear-gradient(120deg,var(--bg-soft),var(--bg));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.key-message-image{border-radius:14px;overflow:hidden;box-shadow:var(--shadow);}
.key-message-image img{width:100%;display:block;}
.key-message-body h2{margin-bottom:12px;}
.key-message-body .lead{margin-bottom:0;}
@media (max-width:960px){
  .key-message{grid-template-columns:1fr;}
  .key-message-image{margin-bottom:8px;}
}
@media (max-width:760px){
  .key-message{padding:20px;}
}

/* ---- Section title block ---- */
.section-head{max-width:720px;margin-bottom:36px;}
.section-head.nowrap-title h2{white-space:normal;}
@media (min-width:761px){
  .section-head.nowrap-title h2{white-space:nowrap;}
}

/* ---- Table (facility list) ---- */
table.data{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);}
table.data th{background:var(--bg-soft);color:var(--teal-deep);text-align:left;padding:12px 16px;font-size:13.5px;}
table.data td{padding:12px 16px;border-top:1px solid var(--border);font-size:14.5px;color:var(--muted);}
table.data tr td:first-child{color:var(--ink);font-weight:600;}
table.data.data-compact td{border-top:none;padding:3px 16px;}
table.data.data-compact tr td:first-child{white-space:nowrap;width:180px;}


table.roles-table tr td:first-child{white-space:nowrap;width:1%;}
@media (max-width:560px){
  table.roles-table tr td:first-child{white-space:normal;width:auto;}
}

/* ---- Badge ---- */
.badge{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;
}
.badge-todo{background:rgba(255,107,53,0.12);color:var(--orange-deep);border:1px solid rgba(255,107,53,0.35);}
.badge-teal{background:rgba(0,194,203,0.12);color:var(--teal-deep);border:1px solid rgba(0,194,203,0.35);}

.todo-box{
  background:rgba(255,107,53,0.06);border:1px dashed rgba(255,107,53,0.4);border-radius:12px;
  padding:14px 18px;font-size:13.5px;color:var(--muted);margin:10px 0 20px;
}
.todo-box b{color:var(--orange-deep);}

/* ---- FAQ accordion ---- */
.faq-item{padding:0;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:26px;position:relative;padding-right:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{margin:0 0 8px;}
.faq-item summary .faq-preview{margin:0;color:var(--muted);font-size:14.5px;}
.faq-item summary::after{
  content:"+";position:absolute;top:24px;right:24px;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
  color:var(--teal-deep);background:rgba(0,194,203,0.12);
}
.faq-item[open] summary::after{content:"\2212";}
.faq-item[open] summary .faq-preview{display:none;}
.faq-item[open] summary{padding-bottom:8px;}
.faq-item .faq-answer{padding:0 26px 26px;}
.faq-item .faq-answer ul{margin:0;padding-left:20px;}
.faq-item .faq-answer li{margin-bottom:10px;font-size:14.5px;color:var(--ink);line-height:1.7;}
.faq-item .faq-answer li:last-child{margin-bottom:0;}
@media (max-width:560px){
  .faq-item summary{padding:20px;padding-right:50px;}
  .faq-item summary::after{top:18px;right:18px;}
  .faq-item .faq-answer{padding:0 20px 20px;}
}

/* ---- Voice card (photo + testimonial) ---- */
.voice-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:12px;}
.voice-avatar{
  width:88px;height:88px;border-radius:50%;object-fit:cover;flex-shrink:0;
  border:1px solid var(--border);box-shadow:var(--shadow);background:var(--bg-soft);
}
.voice-text{min-width:0;}
.voice-role{display:block;font-size:12px;font-weight:700;color:var(--teal-deep);margin-bottom:2px;}
.voice-item summary h3{margin:0 0 4px;}
.voice-item summary .faq-preview{margin:0;}

/* ---- CTA banner ---- */
.cta-banner{
  background:linear-gradient(120deg,var(--bg-soft),var(--bg));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:48px;text-align:center;box-shadow:var(--shadow);
}
.cta-banner h2{margin-bottom:10px;}
.cta-banner p{color:var(--muted);max-width:560px;margin:0 auto 22px;}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}

/* ---- Members / list ---- */
.person-card{display:flex;gap:28px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.avatar{width:64px;height:64px;border-radius:50%;background:var(--bg-soft);flex:none;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:22px;font-weight:800;border:1px solid var(--border);}
.avatar-photo{width:96px;height:96px;border-radius:50%;object-fit:cover;flex:none;border:1px solid var(--border);box-shadow:var(--shadow);background:var(--bg-soft);display:block;}
.person-photo{width:196px;border-radius:14px;object-fit:cover;flex:none;border:1px solid var(--border);box-shadow:var(--shadow);display:block;}
@media (max-width:760px){
  .person-card{flex-direction:column;}
  .person-photo{width:100%;max-width:224px;margin:0 auto;}
}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center;box-shadow:var(--shadow);}
.stat-card b{display:block;font-size:26px;color:var(--orange-deep);}
.stat-card span{font-size:13px;color:var(--muted);}

/* ---- News list ---- */
.news-item{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--border);}
.news-item:first-child{border-top:none;}
.news-date{color:var(--muted);font-size:13.5px;}
.news-tag{display:inline-block;font-size:11.5px;color:var(--teal-deep);border:1px solid rgba(0,194,203,0.4);padding:2px 9px;border-radius:999px;margin-bottom:6px;}

/* ---- Form ---- */
form.contact-form{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;max-width:640px;box-shadow:var(--shadow);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:6px;font-weight:600;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:12px 14px;border-radius:9px;border:1px solid var(--border);
  background:var(--bg);color:var(--ink);font-size:14.5px;font-family:inherit;
}
.form-row textarea{min-height:120px;resize:vertical;}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;}

/* ---- Google Form embed ---- */
.gform-embed{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px;max-width:660px;box-shadow:var(--shadow);
}
.gform-embed iframe{width:100%;min-height:1250px;border:0;display:block;}
@media (max-width:560px){
  .gform-embed{padding:8px;}
  .gform-embed iframe{min-height:1450px;}
}

/* ---- Footer ---- */
.site-footer{border-top:1px solid var(--border);padding:48px 0 28px;color:var(--muted);background:var(--bg-soft);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:28px;}
.footer-grid h4{color:var(--navy);font-size:14px;margin-bottom:12px;}
.footer-grid a{display:block;color:var(--muted);font-size:14px;padding:4px 0;}
.footer-grid a:hover{color:var(--teal-deep);}
.footer-bottom{font-size:12.5px;border-top:1px solid var(--border);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}

/* ---- Modal (full-text message) ---- */
.modal-overlay{
  position:fixed;inset:0;background:rgba(15,23,32,0.6);
  display:flex;align-items:center;justify-content:center;
  padding:24px;z-index:1000;
}
.modal-overlay[hidden]{display:none;}
.modal-box{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  max-width:760px;width:100%;max-height:85vh;overflow-y:auto;
  padding:0;
}
.modal-header{
  position:sticky;top:0;background:var(--card);
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 26px;border-bottom:1px solid var(--border);
}
.modal-header h3{margin:0;color:var(--navy);}
.modal-close{
  background:none;border:none;font-size:26px;line-height:1;cursor:pointer;
  color:var(--muted);padding:4px 8px;
}
.modal-close:hover{color:var(--ink);}
.modal-body{padding:22px 26px 28px;}
.modal-body p{margin-bottom:14px;color:var(--ink);}
.modal-body .signature{text-align:right;color:var(--muted);margin-top:18px;}
body.modal-open{overflow:hidden;}

/* ---- Responsive ---- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .approach-card{grid-template-columns:1fr;}
  .approach-card img{min-height:180px;}
  .footer-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:760px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);
    flex-direction:column;padding:10px 24px 18px;border-bottom:1px solid var(--border);
  }
  .main-nav.open{display:flex;}
  .header-actions .btn-outline{display:none;}
  .brand span,.brand small{white-space:normal;}
  .header-inner{gap:6px;padding:14px 12px;}
  .brand{font-size:13px;gap:4px;}
  .brand-mark{width:26px;height:26px;}
  .nav-toggle{padding:6px 8px;font-size:16px;}
  .header-actions{gap:4px;}
  .header-actions .btn-ghost{padding:7px 9px;font-size:12.5px;}
  .header-actions .btn-primary{padding:7px 9px;font-size:12px;}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
  section{padding:52px 0;}
  .news-item{grid-template-columns:1fr;}
}