:root{
  /* base */
  --s-bg: #ffffff;
  --s-ink: #0b1220;

  /* brand */
  --s-blue: #177fc8;      /* main blue */
  --s-blue2: #0d6fb8;     /* deeper blue */
  --s-green: #2bb673;     /* accent green */
  --s-green2: #1f9a5f;

  /* surfaces */
  --s-soft: #f5fbff;
  --s-soft2: #eef7ff;
  --s-line: rgba(11,18,32,.10);

  /* radius/shadow */
  --s-r-md: 14px;
  --s-r-lg: 18px;
  --s-shadow: 0 14px 34px rgba(11,18,32,.10);

  /* layout */
  --s-container: min(1140px, calc(100% - 44px));
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{ margin:0; }

.s-body{
  background: var(--s-bg);
  color: var(--s-ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-weight: 500; /* ここ大事：基本500 */
  line-height: 1.9;
}

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

.s-main{ width:100%; }
.s-container{ width: var(--s-container); margin: 0 auto; }

.s-br-sm{ display:none; }
@media (max-width: 720px){ .s-br-sm{ display:block; } }

/* ===== Header ===== */
.s-header{
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(11,18,32,.08);
}
.s-header-inner{
  width: var(--s-container);
  margin: 0 auto;
  padding: 14px 0;
  display:flex;
  align-items:center;
  justify-content:flex-start;
}
.s-header-brand-ja{
  font-weight: 600; /* 強調は600まで */
  letter-spacing: .03em;
  font-size: 1.06rem;
}

/* ===== Hero ===== */
.s-hero{
  padding: 72px 0 54px;
  background:
    radial-gradient(900px 420px at 50% -120px, rgba(23,127,200,.20), rgba(255,255,255,0) 62%),
    linear-gradient(180deg, var(--s-soft), #fff);
}
.s-hero-inner{
  width: var(--s-container);
  margin: 0 auto;
  text-align:center;
}
.s-hero-eyebrow{
  margin: 0;
  letter-spacing: .30em;
  font-weight: 600;
  font-size: .86rem;
  color: rgba(11,18,32,.45);
}
.s-hero-title{
  margin: 14px 0 0;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.2;
  font-size: clamp(2.05rem, 3.0vw, 2.65rem);
}
.s-hero-lead{
  margin: 16px auto 0;
  max-width: 980px;
  color: rgba(11,18,32,.72);
}

/* KPI cards */
.s-hero-kpis{
  margin: 28px auto 0;
  max-width: 1080px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  text-align:left;
}
.s-kpi{
  background: rgba(255,255,255,.92);
  border-radius: var(--s-r-lg);
  box-shadow: 0 12px 30px rgba(11,18,32,.08);
  padding: 16px 16px 14px;
  border: 1px solid rgba(11,18,32,.06);
}
.s-kpi-top{
  display:flex;
  gap: 10px;
  align-items:center;
}
.s-kpi-badge{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  font-weight: 600;
  color:#fff;
  background: linear-gradient(135deg, var(--s-blue2), var(--s-blue));
}
.s-kpi--e .s-kpi-badge{
  background: linear-gradient(135deg, var(--s-green2), var(--s-green));
}
.s-kpi-title{
  font-weight: 600;
  letter-spacing: .02em;
}
.s-kpi-text{
  margin: 10px 0 0;
  color: rgba(11,18,32,.70);
}

/* ===== Sections ===== */
.s-section{ padding: 68px 0; }
.s-section--white{ background:#fff; }
.s-section--soft{
  background: #f7fbff;
  border-top: 1px solid rgba(11,18,32,.06);
  border-bottom: 1px solid rgba(11,18,32,.06);
}

.s-section-head{ text-align:center; }
.s-section-title{
  margin: 0;
  font-weight: 600;
  letter-spacing: .02em;
  font-size: clamp(1.55rem, 2.1vw, 1.95rem);
}
.s-section-lead{
  margin: 12px auto 0;
  max-width: 980px;
  color: rgba(11,18,32,.66);
}

/* ===== Top card grid (image-like) ===== */
.s-card-grid{
  margin-top: 28px;
  display:grid;
  gap: 14px;
}
.s-card-grid--4{
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.s-card{
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(11,18,32,.07);
  border-radius: var(--s-r-lg);
  box-shadow: 0 12px 30px rgba(11,18,32,.06);
  padding: 18px 16px 16px;
}
.s-card-icon{
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  font-size: 1.05rem;
  margin-bottom: 10px;
}
.s-ic--blue{
  background: rgba(23,127,200,.12);
  color: var(--s-blue2);
}
.s-ic--green{
  background: rgba(43,182,115,.14);
  color: var(--s-green2);
}
.s-card-title{
  margin: 0;
  font-weight: 600;
  letter-spacing: .01em;
  font-size: 1.02rem;
}
.s-card-text{
  margin: 10px 0 0;
  color: rgba(11,18,32,.70);
}

/* ===== ESG blocks ===== */
.s-esg{
  display:grid;
  gap: 18px;
  margin-top: 26px;
}
.s-esg-block{
  border-radius: 22px;
  padding: 22px 20px 18px;
  background: linear-gradient(180deg, rgba(23,127,200,.06), rgba(23,127,200,.02));
  border: 1px solid rgba(23,127,200,.12);
}
.s-esg-block--e{
  background: linear-gradient(180deg, rgba(43,182,115,.08), rgba(43,182,115,.02));
  border-color: rgba(43,182,115,.16);
}
.s-esg-block--g{
  background: linear-gradient(180deg, rgba(13,111,184,.07), rgba(13,111,184,.02));
  border-color: rgba(13,111,184,.14);
}

.s-esg-head{
  display:flex;
  gap: 14px;
  align-items:flex-start;
}
.s-esg-mark{
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display:grid;
  place-items:center;
  font-weight: 600;
  color:#fff;
  background: linear-gradient(135deg, var(--s-blue2), var(--s-blue));
  flex: 0 0 44px;
}
.s-esg-block--e .s-esg-mark{
  background: linear-gradient(135deg, var(--s-green2), var(--s-green));
}
.s-esg-title{
  margin: 0;
  font-weight: 600;
  letter-spacing: .02em;
  font-size: 1.25rem;
}
.s-esg-sub{
  margin: 6px 0 0;
  color: rgba(11,18,32,.70);
}

/* features grid */
.s-feature-grid{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.s-feature{
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(11,18,32,.07);
  border-radius: var(--s-r-lg);
  padding: 14px 14px 12px;
}
.s-feature-title{
  margin: 0;
  font-weight: 600;
  letter-spacing: .01em;
  font-size: 1.00rem;
}
.s-feature-text{
  margin: 8px 0 0;
  color: rgba(11,18,32,.70);
}

/* ===== CTA ===== */
.s-cta{
  padding: 64px 0 78px;
  background: linear-gradient(180deg, #f6fbff, #fff);
  border-top: 1px solid rgba(11,18,32,.06);
}
.s-cta-inner{
  width: var(--s-container);
  margin: 0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 18px;
}
.s-cta-title{
  margin: 0;
  font-weight: 600;
  font-size: clamp(1.38rem, 2.0vw, 1.68rem);
}
.s-cta-desc{
  margin: 10px 0 0;
  color: rgba(11,18,32,.70);
  max-width: 820px;
}
.s-cta-actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content:flex-end;
}
.s-cta-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--s-blue2);
  color:#fff;
  font-weight: 600;
  box-shadow: 0 18px 46px rgba(13,111,184,.18);
  transition: transform .2s ease, box-shadow .2s ease;
}
.s-cta-btn:hover{
  transform: translateY(-2px);
  box-shadow: 0 24px 60px rgba(13,111,184,.22);
}
.s-cta-tel{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(43,182,115,.28);
  background: rgba(43,182,115,.10);
  color: rgba(11,18,32,.82);
  font-weight: 600;
}

/* ===== Footer ===== */
.s-footer{
  background:#fff;
  border-top: 1px solid rgba(11,18,32,.10);
  text-align:center;
  padding: 18px 0;
}
.s-footer-copy{ color: rgba(11,18,32,.55); }

/* ===== Responsive ===== */
@media (max-width: 1100px){
  .s-card-grid--4{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 980px){
  .s-hero-kpis{ grid-template-columns: 1fr; }
  .s-feature-grid{ grid-template-columns: 1fr; }
  .s-cta-inner{ flex-direction: column; align-items:flex-start; }
  .s-cta-actions{ width:100%; justify-content: stretch; }
  .s-cta-actions a{ width:100%; }
}
@media (max-width: 680px){
  :root{ --s-container: calc(100% - 28px); }
  .s-card-grid--4{ grid-template-columns: 1fr; }
}