:root {
  --ink: #111827;
  --navy: #082655;
  --blue: #1f5d9f;
  --teal: #0f766e;
  --muted: #5f6f86;
  --soft: #f4f7fb;
  --panel: #ffffff;
  --line: #dce6f2;
  --warm: #fff8ec;
  --mint: #eefaf6;
  --shadow: 0 18px 48px rgba(18, 39, 73, .10);
  --shadow-soft: 0 10px 28px rgba(18, 39, 73, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f7f9fc 0, #eef4fb 520px, #f7f9fc 100%);
  line-height: 1.75;
}

a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: none; }

.skip-link {
  position: absolute;
  left: 18px;
  top: -48px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--navy);
  color: #fff;
  border-radius: 8px;
}

.skip-link:focus { top: 12px; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(18px, 5vw, 72px);
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid rgba(220,230,242,.8);
  backdrop-filter: blur(14px);
}

.brand {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0;
  color: var(--navy);
}

.top-nav {
  display: flex;
  gap: 16px;
  font-size: .94rem;
  font-weight: 700;
}

main {
  width: min(1240px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 76px;
}

.breadcrumbs {
  font-size: .92rem;
  margin: 0 0 22px;
  color: var(--muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: #9aa8ba;
}

.hero,
.page-visual {
  overflow: hidden;
  border-radius: 24px;
  background: #fff;
  border: 1px solid rgba(220,230,242,.9);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .62fr) minmax(320px, 1fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
  padding: clamp(22px, 4vw, 42px);
}

.page-visual img,
.hero-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.hero-copy {
  padding: clamp(8px, 2vw, 18px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-weight: 900;
  letter-spacing: 0;
}

h1,
.hero h1 {
  margin: 0;
  font-size: clamp(2.15rem, 5vw, 4.6rem);
  line-height: 1.12;
  letter-spacing: 0;
  color: var(--navy);
}

.hero p {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.page-heading {
  max-width: 920px;
  margin: 42px auto 30px;
  text-align: center;
}

.page-heading p:last-child {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.page-content {
  width: min(920px, 100%);
  display: grid;
  gap: 22px;
  margin: 40px auto 42px;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, .96);
  box-shadow: var(--shadow);
}

.info-card,
.faq-card .info-card {
  position: relative;
  padding: clamp(24px, 3vw, 36px);
  border-radius: 20px;
  border: 1px solid #e3ebf5;
  background: linear-gradient(180deg, #fff 0%, #fbfdff 100%);
  box-shadow: var(--shadow-soft);
}

.info-card:nth-child(3n + 1) { background: linear-gradient(180deg, #fff 0%, var(--mint) 120%); }
.info-card:nth-child(3n + 2) { background: linear-gradient(180deg, #fff 0%, #eef5ff 120%); }
.info-card:nth-child(3n) { background: linear-gradient(180deg, #fff 0%, var(--warm) 120%); }

.info-card::before,
.link-panel h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(15,118,110,.12);
  vertical-align: middle;
}

.page-content h2,
.page-content h3 {
  margin: 0 0 18px;
  color: var(--navy);
  line-height: 1.35;
  letter-spacing: 0;
}

.page-content h2 {
  display: block;
  margin: -4px 0 22px;
  padding: 18px 20px 18px 22px;
  border-left: 6px solid var(--blue);
  border-radius: 16px;
  background: linear-gradient(90deg, #eef5ff 0%, #f8fbff 100%);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  box-shadow: inset 0 0 0 1px rgba(157, 188, 225, .32);
}

.page-content h3 {
  padding-bottom: 10px;
  border-bottom: 1px solid #dce6f2;
  font-size: clamp(1.22rem, 2vw, 1.55rem);
}

.page-content p {
  margin: 0 0 20px;
  color: #34445b;
  font-size: 1.04rem;
  line-height: 1.95;
}

.page-content p:last-child { margin-bottom: 0; }

.page-content ul,
.page-content ol {
  margin: 18px 0 0;
  padding: 18px 22px 18px 44px;
  border-radius: 16px;
  border: 1px solid #e2eaf4;
  background: #f8fbff;
  color: #34445b;
}

.page-content li + li { margin-top: 8px; }

.page-content blockquote {
  margin: 22px 0;
  padding: 22px 24px;
  border-left: 6px solid var(--teal);
  border-radius: 16px;
  background: #eefaf6;
  color: #24364d;
  box-shadow: var(--shadow-soft);
}

.page-content blockquote p {
  margin-bottom: 0;
}

.page-content details {
  padding: 18px 20px;
  border: 1px solid #e2eaf4;
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.page-content details + details { margin-top: 12px; }
.page-content details:first-child { border-top: 1px solid #e2eaf4; }
.page-content summary {
  cursor: pointer;
  font-weight: 900;
  color: var(--navy);
}

.page-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 24px auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-soft);
  object-fit: contain;
}

.fixed-image-stack {
  width: min(100%, 980px);
  margin: 34px auto;
}

.detail-image-stack {
  width: min(100%, 980px);
  display: grid;
  gap: 18px;
  margin: 24px auto 38px;
}

.representative-image,
.flow-image {
  display: block;
  width: 100%;
  margin: 18px 0;
  padding: 0;
  overflow: hidden;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px rgba(18, 39, 73, .06);
}

.representative-image img,
.flow-image img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  width: min(1120px, 100%);
  margin: 42px auto 0;
}

.related-link-band {
  padding: clamp(22px, 3vw, 30px);
  border-radius: 20px;
  border: 1px solid #dfe8f3;
  background: linear-gradient(180deg, #ffffff 0%, #f4f8fd 100%);
  box-shadow: var(--shadow-soft);
}

.related-link-band h2 {
  margin: 0 0 18px;
  color: var(--navy);
  font-size: clamp(1.22rem, 2vw, 1.58rem);
}

.related-link-band ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.related-card {
  display: grid;
  min-height: 92px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid #d8e4f0;
  background: #fff;
  color: var(--navy);
  box-shadow: 0 8px 22px rgba(18, 39, 73, .06);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: #9dbce1;
  box-shadow: 0 14px 28px rgba(18, 39, 73, .10);
}

.related-card strong {
  font-size: 1.02rem;
  line-height: 1.35;
}

.related-card span {
  align-self: end;
  color: var(--muted);
  font-size: .9rem;
}

.link-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 14px 34px rgba(18, 39, 73, .08);
}

.link-panel h2 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--navy);
}

.link-panel ul {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.link-panel li { min-width: 0; }

.link-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  min-height: 82px;
  padding: 16px 46px 16px 16px;
  border-radius: 16px;
  border: 1px solid #dbe5f1;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
  color: var(--ink);
  box-shadow: 0 8px 20px rgba(18, 39, 73, .05);
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: #9dbce1;
  box-shadow: 0 14px 28px rgba(18, 39, 73, .10);
}

.link-card-title {
  grid-column: 1 / 2;
  align-self: end;
  color: var(--navy);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.link-card-meta {
  grid-column: 1 / 2;
  align-self: start;
  color: var(--muted);
  font-size: .92rem;
  overflow-wrap: anywhere;
}

.link-card-arrow {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #eaf3ff;
  color: var(--blue);
  font-weight: 900;
}

.site-footer {
  padding: 30px clamp(18px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fff;
}

@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  main { width: min(100% - 28px, 1240px); padding-top: 18px; }
  .hero { grid-template-columns: 1fr; padding: 18px; border-radius: 18px; }
  .hero-copy { order: 2; }
  .hero-image { order: 1; }
  .page-visual { border-radius: 18px; }
  .page-heading { margin: 28px auto 22px; text-align: left; }
  h1, .hero h1 { font-size: clamp(2rem, 10vw, 3rem); }
  .content-grid { grid-template-columns: 1fr; }
  .page-content { padding: 16px; border-radius: 20px; }
  .info-card,
  .link-panel { border-radius: 16px; padding: 20px; }
  .page-content h2 { padding: 14px 16px; border-radius: 14px; }
  .link-card { min-height: 74px; padding: 14px 42px 14px 14px; }
}