:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --bg-deep: #0f2742;
  --text: #1f2933;
  --muted: #667085;
  --main: #0f2742;
  --main-2: #173a5e;
  --border: #d9e1ea;
  --accent: #2f80ed;
  --shadow: 0 24px 70px rgba(15, 39, 66, 0.09);
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  /*font-family: system-ui, -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;*/
  font-family: ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  background: var(--bg);
}

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

p,
h1,
h2,
h3,
dl,
dd {
  margin: 0;
}

p + p {
  margin-top: 1.15em;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 225, 234, 0.8);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--main);
    font-size: 20px;
    font-weight: 760;
    letter-spacing: 0.04em;
}

.site-logo-mark {
    display: block;
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex: 0 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 560;
}

.site-nav a:hover {
  color: var(--main);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
  padding: 84px 0 96px;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 18%, rgba(47, 128, 237, 0.13), transparent 30%),
    radial-gradient(circle at 10% 85%, rgba(15, 39, 66, 0.08), transparent 32%),
    linear-gradient(180deg, #fff 0%, #f7f9fc 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  align-items: center;
  gap: 70px;
}

.eyebrow,
.section-label {
  color: var(--accent);
  font-size: 13px;
  font-weight: 760;
  line-height: 1.4;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin-top: 18px;
  color: var(--main);
  font-size: clamp(44px, 5.4vw, 68px);
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.hero h1 span {
  white-space: nowrap;
}

.hero-lead {
  margin-top: 28px;
  color: var(--main);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 740;
  line-height: 1.75;
}

.hero-text {
  max-width: 700px;
  margin-top: 24px;
  color: #344054;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.9;
}

.hero-visual {
  position: relative;
  min-height: 460px;
  isolation: isolate;
}

.visual-base {
  position: absolute;
  inset: -34px -36px -20px -28px;
  overflow: hidden;
  border: none;
  border-radius: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(47, 128, 237, 0.22), transparent 13%),
    radial-gradient(circle at 78% 22%, rgba(47, 128, 237, 0.12), transparent 30%),
    radial-gradient(circle at 20% 80%, rgba(15, 39, 66, 0.055), transparent 32%),
    linear-gradient(90deg, rgba(255,255,255,0), rgba(247,249,252,0.72) 38%, rgba(247,249,252,0.88));
  box-shadow: none;
}

.visual-base::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(15, 39, 66, 0.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 39, 66, 0.030) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at 54% 50%, #000 0%, #000 56%, transparent 86%);
  -webkit-mask-image: radial-gradient(circle at 54% 50%, #000 0%, #000 56%, transparent 86%);
}

.visual-base::after {
  content: "";
  position: absolute;
  left: 52%;
  top: 50%;
  width: 390px;
  height: 390px;
  border: 1px solid rgba(47, 128, 237, 0.16);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 0 58px rgba(47, 128, 237, 0.035),
    0 0 0 112px rgba(47, 128, 237, 0.020);
}

.visual-orbit {
  position: absolute;
  z-index: 1;
  left: 52%;
  top: 50%;
  width: 600px;
  height: 300px;
  border: 1px dashed rgba(47, 128, 237, 0.18);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-13deg);
}

.visual-orbit::after {
  content: "";
  position: absolute;
  inset: 50px 82px;
  border: 1px solid rgba(47, 128, 237, 0.10);
  border-radius: 50%;
}

.visual-hub {
  position: absolute;
  z-index: 2;
  left: 52%;
  top: 50%;
  width: 82px;
  height: 82px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 128, 237, 0.78), rgba(47, 128, 237, 0.24) 45%, transparent 72%);
  box-shadow: 0 0 56px rgba(47, 128, 237, 0.34);
  transform: translate(-50%, -50%);
}

.visual-line-svg {
  position: absolute;
  inset: -34px -36px -20px -28px;
  z-index: 2;
  width: calc(100% + 64px);
  height: calc(100% + 54px);
}

.visual-line-svg path {
  fill: none;
  stroke: rgba(47, 128, 237, 0.28);
  stroke-width: 1.15;
}

.visual-line-svg circle {
  fill: rgba(47, 128, 237, 0.48);
}

.diagram-card {
  position: absolute;
  z-index: 3;
  display: grid;
  align-content: center;
  justify-content: center;
  width: 190px;
  min-height: 98px;
  padding: 18px 22px;
  color: #0d3c78;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(242, 247, 253, 0.72));
  border: 1px solid rgba(199, 218, 241, 0.95);
  border-radius: 18px;
  box-shadow:
    0 24px 58px rgba(15, 39, 66, 0.10),
    inset 0 1px 0 rgba(255,255,255,0.80);
  backdrop-filter: blur(12px);
}

.diagram-card strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-style: italic;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.card-a { top: 72px; left: 70px; transform: rotate(6deg); }
.card-b { top: 76px; right: 26px; transform: rotate(-6deg); }
.card-c { bottom: 76px; left: 72px; transform: rotate(-8deg); }
.card-d { right: 44px; bottom: 78px; transform: rotate(8deg); }

.visual-dot {
  position: absolute;
  z-index: 2;
  width: 8px;
  height: 8px;
  background: rgba(47, 128, 237, 0.34);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(47, 128, 237, 0.24);
}

.dot-a { top: 32px; left: 56%; }
.dot-b { right: -8px; top: 48%; }
.dot-c { left: 18px; bottom: 34%; }
.dot-d { left: 53%; bottom: 26px; }

.section {
  padding: 96px 0;
}

.section-light {
  background: var(--bg-soft);
}

.split-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 72px;
}

.section-heading h2,
.section-title h2 {
  margin-top: 12px;
  color: var(--main);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.36;
  letter-spacing: 0.01em;
}

.section-title {
  max-width: none;
  margin-bottom: 48px;
}

.section-title > p:last-child {
  margin-top: 18px;
  color: #344054;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.9;
}

.section-body {
  color: var(--text);
  font-size: 16.5px;
  line-height: 1.95;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.keyword-list span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  color: var(--main);
  font-size: 13px;
  font-weight: 720;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  min-height: 300px;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 16px 50px rgba(15, 39, 66, 0.04);
}

.service-card h3 {
  margin-top: 0;
  color: var(--accent);
  font-size: 24px;
  line-height: 1.42;
}

.service-card p:not(.card-tags) {
  margin-top: 18px;
}

.card-tags {
  margin-top: 22px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.business-overview {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin: 48px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.business-overview h3 {
  color: var(--main);
  font-size: 22px;
  line-height: 1.5;
}

.business-overview p:not(.section-label) {
  margin-top: 14px;
  color: #344054;
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.9;
}

.business-overview-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.business-overview-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.85;
}

.business-overview-list li::before {
  content: "";
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
}

.company-table {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
}

.company-table div {
  display: grid;
  grid-template-columns: 280px 1fr;
  border-bottom: 1px solid var(--border);
}

.company-table div:last-child {
  border-bottom: none;
}

.company-table dt,
.company-table dd {
  padding: 24px 28px;
}

.company-table dt {
  color: var(--main);
  font-weight: 720;
  background: #f8fafc;
}

.organization-section {
  margin-top: 56px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.organization-section h3 {
  margin-top: 12px;
  color: var(--main);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.4;
}

.org-figure-wrapper {
  margin-top: 36px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.org-figure {
  position: relative;
  width: 1120px;
  height: 620px;
  color: var(--main);
}

.org-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 1120px;
  height: 620px;
  pointer-events: none;
}

.org-lines line {
  stroke: rgba(23, 58, 131, 0.56);
  stroke-width: 1.4;
  shape-rendering: crispEdges;
}

.org-box {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  padding: 14px 18px;
  color: #173a83;
  font-weight: 760;
  line-height: 1.35;
  text-align: center;
  background: #fff;
  border: 1px solid rgba(23, 58, 131, 0.62);
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(23, 58, 131, 0.08);
}

.org-box-lg {
  width: 216px;
  height: 74px;
  font-size: 20px;
}

.org-box-md {
  width: 220px;
  height: 76px;
  font-size: 18px;
}

.org-box-xl {
  height: 84px;
  font-size: 18px;
}

.org-box-sm {
  width: 180px;
  height: 68px;
  padding-inline: 10px;
  font-size: 14px;
  font-weight: 720;
  white-space: nowrap;
  box-shadow: none;
}

.org-stock { left: 452px; top: 0; }
.org-representative { left: 452px; top: 110px; }
.org-management { left: 450px; top: 220px; }
.org-communication { left: 150px; top: 370px; width: 280px; }
.org-strategy { left: 0; top: 542px; }
.org-marketing { left: 200px; top: 542px; }
.org-content { left: 400px; top: 542px; }
.org-dx { left: 680px; top: 370px; width: 260px; }
.org-dx-support { left: 620px; top: 542px; }
.org-system { left: 820px; top: 542px; }
.org-admin { left: 960px; top: 370px; width: 160px; height: 84px; }

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.security-card {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 24px;
  align-items: center;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
}

.certification-image {
  display: grid;
  place-items: center;
  width: 112px;
  min-height: 112px;
  padding: 12px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
  background: #f8fafc;
  border: 1px dashed var(--border);
  border-radius: 16px;
}

.certification-image img {
  display: block;
  max-width: 100%;
  height: auto;
}

.security-card h3 {
  color: var(--main);
  font-size: 22px;
  line-height: 1.5;
}

.security-card p {
  margin-top: 12px;
  color: #344054;
  font-size: 16px;
  line-height: 1.8;
}

.site-footer {
  padding: 42px 0;
  color: rgba(255, 255, 255, 0.76);
  background: var(--bg-deep);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.footer-logo {
  color: #fff;
  font-size: 18px;
  font-weight: 720;
}

.footer-inner p + p {
  margin-top: 6px;
}

.copyright {
  font-size: 13px;
}

@media (max-width: 900px) {
  .site-nav { display: none; }

  .hero {
    min-height: auto;
    padding: 74px 0 82px;
  }

  .hero-inner,
  .split-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    min-height: 350px;
  }

  .visual-base {
    inset: -10px -10px;
  }

  .visual-base::after {
    width: 300px;
    height: 300px;
  }

  .visual-orbit {
    width: 440px;
    height: 220px;
  }

  .visual-hub {
    width: 56px;
    height: 56px;
  }

  .visual-line-svg {
    inset: -10px;
    width: calc(100% + 20px);
    height: calc(100% + 20px);
  }

  .diagram-card {
    width: 148px;
    min-height: 74px;
    padding: 14px 16px;
  }

  .diagram-card strong {
    font-size: 16px;
  }

  .card-a { top: 30px; left: 24px; }
  .card-b { top: 56px; right: 16px; }
  .card-c { bottom: 54px; left: 18px; }
  .card-d { right: 28px; bottom: 34px; }

  .dot-a,
  .dot-b,
  .dot-c,
  .dot-d {
    display: none;
  }

  .section {
    padding: 72px 0;
  }

  .service-grid,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .security-card {
    grid-template-columns: 96px 1fr;
  }

  .certification-image {
    width: 96px;
    min-height: 96px;
  }

  .service-card {
    min-height: auto;
  }

  .org-figure-wrapper {
    overflow-x: visible;
  }

  .org-figure {
    display: grid;
    width: 100%;
    height: auto;
    gap: 14px;
  }

  .org-lines {
    display: none;
  }

  .org-box,
  .org-stock,
  .org-representative,
  .org-management,
  .org-admin,
  .org-communication,
  .org-strategy,
  .org-marketing,
  .org-content,
  .org-dx,
  .org-dx-support,
  .org-system {
    position: static;
    width: 100%;
    height: auto;
    min-height: 64px;
  }

  .org-stock { order: 1; }
  .org-representative { order: 2; }
  .org-management { order: 3; }
  .org-communication { order: 4; }
  .org-strategy { order: 5; }
  .org-marketing { order: 6; }
  .org-content { order: 7; }
  .org-dx { order: 8; }
  .org-dx-support { order: 9; }
  .org-system { order: 10; }
  .org-admin { order: 11; }

  .company-table div {
    grid-template-columns: 1fr;
  }

  .company-table dt {
    padding-bottom: 8px;
  }

  .company-table dd {
    padding-top: 8px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .header-inner {
    min-height: 64px;
  }

  .site-logo {
    font-size: 18px;
  }

  .site-logo-mark {
    width: 28px;
    height: 28px;
   }

  .hero h1 {
    font-size: clamp(32px, 10.2vw, 40px);
  }

  .hero-lead {
    font-size: 18px;
  }

  .hero-visual {
    display: none;
  }

  .service-card,
  .security-card {
    padding: 24px;
  }

  .security-card {
    grid-template-columns: 1fr;
  }

  .certification-image {
    width: 100%;
    min-height: 96px;
  }

  .company-table dt,
  .company-table dd {
    padding-inline: 20px;
  }
}