:root{
  --spark-blue: #4EC3E0;
  --spark-light-blue: #83D5EC;
  --spark-grey: #5F5D5D;
  --spark-light-grey: #D8D8D5;
  --spark-orange: #D38359;

  --bg: #ffffff;
  --ink: #1f1f1f;
  --muted: rgba(95,93,93,0.78);
  --line: rgba(95,93,93,0.16);

  --radius: 18px;
  --shadow: 0 12px 30px rgba(0,0,0,0.08);

  --font-head: "Jost", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  --font-body: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
}
img{ max-width: 100%; height: auto; display: block; }
a{ color: inherit; text-decoration: none; }

.container{
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

/* Header */
.siteHeader{
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.headerInner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand{ display: inline-flex; align-items: center; gap: 10px; }
.brandLogo{ height: 38px; width: auto; }

/* Buttons */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform .12s ease, background .12s ease, filter .12s ease;
}
.btn:active{ transform: translateY(1px); }

.btnPrimary{
  border: none;
  background: var(--spark-blue);
  color: #fff;
  box-shadow: 0 12px 22px rgba(78,195,224,0.22);
}
.btnPrimary:hover{ filter: brightness(1.03); }

.btnGhost{
  border: 1px solid rgba(78,195,224,0.95);
  color: rgba(35,115,133,1);
  background: #fff;
}
.btnGhost:hover{ background: rgba(78,195,224,0.10); }

/* HERO */
.hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #fff;
  padding: 64px 0 72px;
}

.hero::after{
  content:"";
  position: absolute;
  inset: -2px;
  background: var(--spark-blue);
  clip-path: polygon(58% 0%, 100% 0%, 100% 100%, 42% 100%);
  z-index: 0;
}

.heroPattern{
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.38;
  background: url("./science-pattern.png") left bottom / 1200px auto no-repeat;
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0 48%, rgba(0,0,0,0) 78% 100%);
}

.heroInner{
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 26px;
  align-items: center;
}

.heroCopy{ padding-right: 8px; }
.heroKicker{
  margin: 0 0 12px;
  color: rgba(95,93,93,0.72);
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 700;
}

.heroTitle{
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(34px, 4.8vw, 56px);
  line-height: 1.06;
  letter-spacing: 0.02em;
  color: var(--spark-grey);
}
.heroTitleEm{ display: inline-block; }

.heroLead{
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.95;
  font-size: 15.5px;
  max-width: 40em;
}

.heroCtas{ display: flex; flex-wrap: wrap; gap: 12px; }
.heroNote{
  margin: 14px 0 0;
  color: rgba(95,93,93,0.62);
  font-size: 12px;
}

.heroVisual{
  position: relative;
  display: grid;
  justify-items: end;
  align-items: center;
}

.heroImageFrame{
  width: min(520px, 100%);
  aspect-ratio: 1 / 1;
  border-radius: 26px;
  overflow: hidden;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.40);
  box-shadow: 0 18px 38px rgba(0,0,0,0.16);
  transform: translateY(8px);
}
.heroImage{
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.heroOrmco{
  position: absolute;
  right: 8px;
  bottom: -8px;
  color: rgba(255,255,255,0.92);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: var(--font-head);
}

.heroWave{
  position: absolute;
  left: 0; right: 0;
  bottom: -12px;
  height: 190px;
  z-index: 1;
  pointer-events: none;

  background-image: radial-gradient(circle, rgba(78,195,224,0.60) 1px, transparent 1px);
  background-size: 8px 8px;
  transform: skewY(-6deg);
  transform-origin: left bottom;

  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0 38%, rgba(0,0,0,0) 82% 100%);
  opacity: 0.44;
}

/* Sections */
.section{
  padding: 56px 0;
  position: relative;
}
.section::before{
  content:"";
  position: absolute;
  left: 0; right: 0;
  top: 0;
  height: 6px;
  background: rgba(78,195,224,0.22);
}
.sectionHead{ margin-bottom: 18px; }
.sectionHead--tight{ margin-bottom: 12px; }

.sectionTitle{
  margin: 0;
  font-family: var(--font-head);
  font-size: 24px;
  letter-spacing: 0.02em;
  color: var(--spark-grey);
}
.sectionTitle--blue{ color: rgba(35,115,133,1); }

.sectionSub{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

/* Overview two columns (図2イメージ) */
.overviewSection{
  background:
    linear-gradient(180deg, rgba(131,213,236,0.14) 0%, rgba(255,255,255,1) 55%);
}
.overviewGrid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

/* Panels */
.panel{
  border-radius: 22px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 22px;
  position: relative;
  overflow: hidden;
}
.panel--left::after{
  content:"";
  position: absolute;
  inset: -2px;
  background: rgba(78,195,224,0.12);
  clip-path: polygon(0% 0%, 38% 0%, 24% 100%, 0% 100%);
  pointer-events: none;
}
.panel--right::after{
  content:"";
  position: absolute;
  inset: -2px;
  background: rgba(211,131,89,0.10);
  clip-path: polygon(78% 0%, 100% 0%, 100% 100%, 64% 100%);
  pointer-events: none;
}
.panel > *{ position: relative; z-index: 1; }

.panelNote{
  margin: 12px 0 0;
  color: rgba(95,93,93,0.62);
  font-size: 12px;
  line-height: 1.6;
}

/* Round icon system */
.iconCircle{
  width: 46px;
  height: 46px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 2px solid rgba(211,131,89,0.85);
  box-shadow: 0 10px 18px rgba(0,0,0,0.06);
  flex: 0 0 auto;
}
.iconCircle img{
  width: 38px;
  height: 24px;
  object-fit: contain;
}
.iconCircle--orange{
  background: var(--spark-orange);
  border-color: var(--spark-orange);
}
.iconCircle--orange img{
  filter: brightness(100);
}

/* Benefits list (left) */
.iconList{
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.iconRow{
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  align-items: center;
}
.iconRowText{
  font-size: 15px;
  font-weight: 700;
  color: var(--spark-grey);
  line-height: 1.5;
}

/* Flow (right) */
.flowV2{
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.flowV2Item{
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 12px;
  border-radius: 18px;
  border: 1px solid rgba(95,93,93,0.12);
  background: rgba(255,255,255,0.72);
}
.flowV2Title{
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 800;
  color: rgba(35,115,133,1);
  font-family: var(--font-head);
}
.flowV2Text{
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* Contact */
.contactBox{
  border-radius: 22px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 22px;
}
.contactGrid{
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.contactItem{
  border-radius: 18px;
  border: 1px solid rgba(95,93,93,0.14);
  background: rgba(78,195,224,0.06);
  padding: 14px;
}
.contactTitle{
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 800;
  color: var(--spark-grey);
  font-family: var(--font-head);
}
.contactText{
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--spark-grey);
}
.contactHint{
  margin: 6px 0 0;
  color: rgba(95,93,93,0.62);
  font-size: 12px;
  line-height: 1.6;
}
.contactCta{ margin-top: 14px; }

/* Footer */
.siteFooter{
  padding: 24px 0 36px;
  border-top: 1px solid var(--line);
}
.footerInner{
  text-align: center;
  color: rgba(95,93,93,0.62);
  font-size: 12px;
}

/* Responsive */
.br-sp{ display: none; }

@media (max-width: 980px){
  .overviewGrid{ grid-template-columns: 1fr; } /* スマホ/タブレットで上下 */
  .heroInner{ grid-template-columns: 1fr; }
  .heroVisual{ justify-items: start; }
  .heroImageFrame{ width: min(620px, 100%); aspect-ratio: 4 / 3; transform: none; }
  .contactGrid{ grid-template-columns: 1fr; }
  .br-sp{ display: inline; }
}

@media (max-width: 560px){
  .brandLogo{ height: 32px; }
  .hero{ padding: 48px 0 58px; }
  .heroTitle{ font-size: 34px; }
  .section{ padding: 48px 0; }
}

/* ===== Site Operator ===== */
.contactHead{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
}

.operatorGrid{
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.25fr 0.9fr 0.9fr;
  gap: 12px;
  align-items: stretch;
}

.operatorInfo{
  border-radius: 18px;
  border: 1px solid rgba(95,93,93,0.14);
  background: rgba(78,195,224,0.06);
  padding: 16px;
}

.operatorName{
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--spark-grey);
  font-size: 16px;
}

.operatorAddr{
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 13px;
}

.operatorDl{
  margin: 0;
  display: grid;
  gap: 8px;
}
.operatorDl > div{
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 10px;
  align-items: baseline;
}
.operatorDl dt{
  font-weight: 800;
  color: rgba(35,115,133,1);
  font-family: var(--font-head);
  letter-spacing: 0.02em;
}
.operatorDl dd{
  margin: 0;
  color: var(--spark-grey);
  font-weight: 700;
}
.operatorDl a{
  color: inherit;
  text-decoration: none;
}
.operatorDl a:hover{
  text-decoration: underline;
}

.operatorLogoCard{
  border-radius: 18px;
  border: 1px solid rgba(95,93,93,0.14);
  background: #fff;
  padding: 16px;
  box-shadow: var(--shadow);
  display: grid;
  align-content: start;
  gap: 10px;
}

.logoLabel{
  margin: 0;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: rgba(95,93,93,0.70);
}

.operatorLogo{
  width: 100%;
  max-height: 86px;
  object-fit: contain;
}

.operatorLogo--spark{
  max-height: 78px;
}

.logoHint{
  margin: 0;
  color: rgba(95,93,93,0.62);
  font-size: 12px;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 980px){
  .operatorGrid{
    grid-template-columns: 1fr;
  }
  .operatorLogo{
    max-height: 74px;
  }
}