/* site: deep teal + ivory, vertical security-layer color bands */
:root {
  --deep: #004D40;
  --ivory: #FFF8E7;
  --teal: #00695C;
  --mist: #E0F2F1;
  --slate: #263238;
  --card: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--slate);
  background: var(--ivory);
  line-height: 1.75;
}

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

.head {
  background: var(--deep);
  color: var(--ivory);
}

.head-box {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px 22px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.head nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  font-size: 0.9rem;
}

.band { width: 100%; }

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 40px 22px 48px;
}

.band-0 { background: var(--deep); color: var(--ivory); }
.band-1 { background: #00695C; color: var(--ivory); }
.band-2 { background: #00796B; color: #fff8e7; }
.band-3 { background: #E0F2F1; color: var(--slate); }
.band-4 { background: #F1F8F6; color: var(--slate); }
.band-5 { background: #FFF8E7; color: var(--slate); }
.band-6 { background: #ECEFF1; color: var(--slate); }
.band-7 { background: #ffffff; color: var(--slate); }

.kicker {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  margin-bottom: 10px;
  color: #b2dfdb;
}

.band-0 h1 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.35;
  margin-bottom: 16px;
}

.band p { margin-bottom: 12px; }

.stamp { color: #80cbc4; font-size: 0.88rem; }

.band h2 {
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.band-1 h2, .band-2 h2 { color: var(--ivory); }

.trio {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.trio li {
  background: rgba(255, 248, 231, 0.1);
  border: 1px solid rgba(255, 248, 231, 0.28);
  padding: 16px 14px 14px;
}

.trio h3 { font-size: 1.02rem; margin: 8px 0; color: #fff8e7; }
.trio svg { color: #fff8e7; }

.risks {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.risks li {
  background: #fff;
  padding: 16px;
  border-bottom: 5px solid var(--teal);
}

.risks h3 { color: var(--deep); margin: 8px 0 6px; }
.risks svg { color: var(--teal); }

.bar-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 20px;
  background: #fff;
  border: 1px solid #cfd8dc;
}

.bar-steps li {
  padding: 16px 14px 18px;
  border-right: 1px solid #cfd8dc;
  position: relative;
}

.bar-steps li:last-child { border-right: none; }

.bar-steps li::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 5px;
  background: var(--teal);
}

.bar-steps li:nth-child(2)::after { background: #00897B; }
.bar-steps li:nth-child(3)::after { background: #26A69A; }
.bar-steps li:nth-child(4)::after { background: #80CBC4; }

.bar-steps strong { display: block; color: var(--deep); margin-bottom: 6px; }
.bar-steps span { font-size: 0.92rem; }

.limit-table { overflow-x: auto; background: #fff; }

table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }

caption {
  text-align: left;
  font-weight: 700;
  padding: 8px 0;
  color: var(--deep);
}

th, td { border: 1px solid #cfd8dc; padding: 10px 12px; text-align: left; }

th { background: var(--deep); color: var(--ivory); }

.faq > div {
  border-top: 1px solid #cfd8dc;
  padding: 16px 0;
}

.faq dt {
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
}

.band-3 a, .band-4 a, .band-5 a, .band-6 a, .band-7 a { color: var(--teal); }

.foot {
  background: var(--slate);
  color: #eceff1;
  text-align: center;
  padding: 26px 16px 36px;
  font-size: 0.9rem;
}

.foot p { margin-bottom: 8px; }

@media (max-width: 800px) {
  .trio, .risks, .bar-steps { grid-template-columns: 1fr; }
  .bar-steps li { border-right: none; border-bottom: 1px solid #cfd8dc; }
}