:root{
  --bg: #0b0c10;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.08);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --line: rgba(255,255,255,.14);
  --brand: #7c5cff;
  --brand-2: #27d5ff;

  --radius: 18px;
  --shadow: 0 12px 35px rgba(0,0,0,.35);

  --container: 1120px;
}

@media (prefers-color-scheme: light){
  :root{
    --bg: #ffffff;
    --panel: rgba(0,0,0,.04);
    --panel-2: rgba(0,0,0,.06);
    --text: rgba(0,0,0,.92);
    --muted: rgba(0,0,0,.64);
    --line: rgba(0,0,0,.12);
    --shadow: 0 12px 35px rgba(0,0,0,.08);
  }
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 450px at 20% 10%, rgba(124,92,255,.24), transparent 70%),
    radial-gradient(900px 450px at 85% 20%, rgba(39,213,255,.18), transparent 70%),
    radial-gradient(700px 350px at 35% 75%, rgba(124,92,255,.16), transparent 65%),
    var(--bg);
  line-height: 1.7;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:-999px;
  background:#000;
  color:#fff;
  padding:10px 12px;
  border-radius:10px;
  z-index:9999;
}
.skip-link:focus{ left:20px; top:20px; }

/* Header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(10,10,14,.55);
  border-bottom: 1px solid var(--line);
}
@media (prefers-color-scheme: light){
  .site-header{ background: rgba(255,255,255,.7); }
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  text-decoration:none !important;
}
.brand-mark{
  width: 42px;
  height: 42px;
  display:grid;
  place-items:center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(39,213,255,.9));
  color: #fff;
  font-weight: 800;
  letter-spacing: .5px;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-name{ font-weight: 800; }
.brand-sub{ font-size: 12px; color: var(--muted); margin-top: 4px; }

.nav{
  display:flex;
  gap: 16px;
  align-items:center;
}
.nav a{
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 10px;
}
.nav a:hover{
  color: var(--text);
  background: var(--panel);
  text-decoration:none;
}

.header-cta{
  display:flex;
  gap: 10px;
  align-items:center;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 800;
  font-size: 14px;
  border: 1px solid var(--line);
  background: transparent;
  box-shadow: none;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn:hover{ filter: brightness(1.05); }
.btn-primary{
  border: 0;
  background: linear-gradient(135deg, rgba(124,92,255,1), rgba(39,213,255,1));
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-ghost{
  background: var(--panel);
}

.nav-toggle{
  display:none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px;
}
.nav-toggle span{
  display:block;
  height: 2px;
  background: var(--text);
  margin: 6px 0;
  border-radius: 2px;
  opacity: .9;
}

.mobile-nav{
  border-top: 1px solid var(--line);
  background: rgba(10,10,14,.65);
  backdrop-filter: blur(10px);
}
@media (prefers-color-scheme: light){
  .mobile-nav{ background: rgba(255,255,255,.85); }
}
.mobile-nav-inner{
  padding: 14px 0 18px;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.mobile-nav a{
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--panel);
  font-weight: 700;
  color: var(--text);
  text-decoration:none !important;
}
.mobile-actions{ display:flex; gap: 10px; padding-top: 10px; }

@media (max-width: 980px){
  .nav{ display:none; }
  .header-cta{ display:none; }
  .nav-toggle{ display:inline-block; }
}

/* Hero */
.hero{
  padding: 56px 0 36px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.kicker{
  margin: 0 0 10px;
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 12px;
}
.hero-title{
  margin: 0 0 14px;
  line-height: 1.15;
}
.hero-name{
  display:block;
  font-size: clamp(34px, 4.2vw, 54px);
  font-weight: 900;
  letter-spacing: -0.02em;
}
.hero-role{
  display:block;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
  font-size: 16px;
}
.hero-lead{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
}
.hero-lead strong{ color: var(--text); }

.hero-badges{
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display:grid;
  gap: 10px;
}
.hero-badges li{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  color: var(--muted);
}
.hero-badges strong{ color: var(--text); }

.hero-actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.hero-meta{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.meta-item{
  padding: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.meta-label{ font-size: 12px; color: var(--muted); font-weight: 800; }
.meta-value{ font-size: 14px; font-weight: 800; margin-top: 4px; }

/* Hero card */
.hero-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.profile{ display:flex; gap: 14px; align-items:flex-start; }
.avatar{
  width: 72px;
  height: 72px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(124,92,255,.22), rgba(39,213,255,.14));
  overflow:hidden;
  flex: 0 0 auto;
  position: relative;
  display:grid;
  place-items:center;
}
.avatar img{
  width:100%;
  height:100%;
  object-fit: cover;
  display:block;
}
.avatar-fallback-inner{
  font-weight: 900;
  font-size: 22px;
  opacity: .9;
}
.avatar.avatar-fallback .avatar-fallback-inner{ display:grid; }
.profile-body{ min-width: 0; }
.profile-name{ margin: 0 0 6px; font-size: 18px; font-weight: 900; }
.profile-desc{ margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.profile-links{ display:flex; flex-wrap: wrap; gap: 8px; }
.link-pill{
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-weight: 800;
  font-size: 12px;
  text-decoration:none !important;
}
.card-divider{
  height: 1px;
  background: var(--line);
  margin: 16px 0;
}

.quick-stats{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.stat{
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.stat-number{ font-weight: 900; font-size: 18px; }
.stat-label{ color: var(--muted); font-weight: 800; font-size: 12px; margin-top: 6px; }

/* Sections */
.section{
  padding: 44px 0;
}
.section-alt{
  background: rgba(255,255,255,.03);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (prefers-color-scheme: light){
  .section-alt{ background: rgba(0,0,0,.02); }
}

.section-head{
  margin-bottom: 18px;
}
.section-title{
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.section-sub{
  margin: 0;
  color: var(--muted);
  max-width: 72ch;
}

/* Proof */
.proof-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 980px){
  .proof-grid{ grid-template-columns: 1fr; }
}
.proof-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.proof-card h3{ margin: 0 0 10px; font-weight: 900; }
.proof-card ul{
  margin: 0 0 12px;
  padding-left: 18px;
  color: var(--muted);
}
.text-link{
  font-weight: 900;
  color: var(--text);
  text-decoration: none !important;
}
.text-link:hover{ text-decoration: underline !important; }

/* Works */
.featured-grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.work-card{
  display:grid;
  grid-template-columns: 280px 1fr;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow:hidden;
}
@media (max-width: 980px){
  .work-card{ grid-template-columns: 1fr; }
}

.work-thumb{
  position: relative;
  min-height: 180px;
  background: linear-gradient(135deg, rgba(124,92,255,.18), rgba(39,213,255,.12));
  border-right: 1px solid var(--line);
}
@media (max-width: 980px){
  .work-thumb{ border-right: 0; border-bottom: 1px solid var(--line); }
}
.work-thumb img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
}
.work-thumb-fallback{
  position:absolute;
  inset: 0;
  display:grid;
  place-items:center;
  font-weight: 900;
  letter-spacing: .06em;
  opacity: .85;
}
.work-body{
  padding: 16px;
}
.work-title{
  margin: 0 0 8px;
  font-weight: 900;
}
.work-one{
  margin: 0 0 12px;
  color: var(--muted);
}
.work-awards{
  margin: 0 0 14px;
  padding-left: 18px;
  color: var(--muted);
}
.work-actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Timeline */
.timeline{
  display:grid;
  gap: 14px;
  max-width: 900px;
}
.timeline-item{
  display:grid;
  grid-template-columns: 16px 1fr;
  gap: 12px;
  align-items:flex-start;
}
.timeline-dot{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  margin-top: 6px;
  background: linear-gradient(135deg, rgba(124,92,255,1), rgba(39,213,255,1));
}
.timeline-body{
  padding: 14px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
}
.timeline-body h3{
  margin: 0 0 6px;
  font-weight: 900;
}
.timeline-body p{
  margin: 0;
  color: var(--muted);
}

.incubation-cta{
  margin-top: 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.note{ margin: 0; color: var(--muted); }

/* Contact */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 980px){
  .contact-grid{ grid-template-columns: 1fr; }
}
.contact-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.contact-card h3{ margin: 0 0 10px; font-weight: 900; }
.contact-card p{ margin: 0 0 12px; color: var(--muted); }

.contact-list{
  list-style:none;
  padding: 0;
  margin: 0 0 10px;
  display:grid;
  gap: 10px;
}
.contact-list li{
  display:flex;
  gap: 10px;
  align-items:baseline;
}
.contact-list span{
  width: 70px;
  color: var(--muted);
  font-weight: 900;
  font-size: 12px;
}
.small{ font-size: 12px; color: var(--muted); }

.link-list{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.divider{
  height: 1px;
  background: var(--line);
  margin: 16px 0;
}

/* Footer */
.site-footer{
  border-top: 1px solid var(--line);
  padding: 18px 0;
}
.footer-inner{
  display:flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-brand{ font-weight: 900; }
.footer-small{ color: var(--muted); font-size: 12px; margin-top: 6px; }
.footer-right{ display:flex; gap: 12px; align-items:center; }
.footer-right a{ color: var(--muted); font-weight: 800; font-size: 13px; }
.footer-right a:hover{ color: var(--text); text-decoration:none; }

body.nav-open{ overflow: hidden; }

/* === Background behavior fix (section-based) ===
   Goal: background color changes only per section (.hero / .section / .section-alt),
   not continuously with scroll or unrelated elements.
*/
html, body{
  background: var(--bg, #0b0d12);
}

/* Prevent scroll-related gradient/attachment effects if present */
body{
  background-attachment: initial !important;
  animation: none !important;
}

/* Explicit section backgrounds */
.hero{
  background: var(--hero-bg,
    radial-gradient(1200px 800px at 15% 10%, rgba(105,140,255,.25), transparent 60%),
    radial-gradient(900px 700px at 85% 20%, rgba(255,105,180,.18), transparent 55%),
    var(--bg, #0b0d12)
  ) !important;
}

.section{
  background: var(--section-bg, rgba(255,255,255,.02)) !important;
}

.section.section-alt{
  background: var(--section-alt-bg, rgba(255,255,255,.045)) !important;
}

/* Keep footer consistent */
.site-footer{
  background: var(--footer-bg, rgba(255,255,255,.02)) !important;
}
/* ===== YouTube iframe: スマホで横はみ出し防止（16:9維持） ===== */
.timeline-body iframe,
.proof-card iframe{
  display: block;
  width: 100% !important;
  max-width: 100%;
  height: auto !important;
  aspect-ratio: 16 / 9;
  border: 0;
}

/* 念のため：コンテンツ全体のはみ出しを抑制 */
.timeline-body,
.proof-card{
  overflow: hidden;
}
.link-right{
  text-align: right;
  margin-top: 10px; /* お好み */
}