:root {
  --slate: #334155;
  --wash: #F1F5F9;
  --teal: #14B8A6;
  --ink: #0F172A;
  --white: #FFFFFF;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--wash);
  color: var(--ink);
  line-height: 1.75;
}

.shell {
  width: min(1080px, calc(100% - 80px));
  margin: 0 auto;
}

.site-header {
  background: var(--white);
  border-bottom: 1px solid #E2E8F0;
}
.site-header .shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
}
.wordmark {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--slate);
}
nav { display: flex; gap: 28px; flex-wrap: wrap; }
nav a {
  color: var(--slate);
  text-decoration: none;
  font-size: 15px;
}
nav a:hover { color: var(--teal); }

.hero { padding: 72px 0 56px; }
.hero-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: start;
}
.eyebrow {
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 560;
  line-height: 1.3;
  margin-bottom: 22px;
}
.hero-copy p { margin-bottom: 16px; color: #334155; max-width: 36em; }
.cta {
  display: inline-block;
  margin-top: 12px;
  padding: 14px 28px;
  background: var(--slate);
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.04em;
}
.cta:hover { background: #1E293B; }

.icon-stack { display: grid; gap: 20px; padding-top: 8px; }
.icon-stack article {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  background: var(--white);
  padding: 20px 22px;
  border: 1px solid #E2E8F0;
}
.icon-stack svg { width: 32px; height: 32px; color: var(--teal); margin-top: 4px; }
.icon-stack h3 { font-size: 16px; margin-bottom: 6px; font-weight: 600; }

.block { padding: 72px 0; }
.block.pale { background: var(--white); }
h2 { font-size: 28px; font-weight: 560; margin-bottom: 16px; color: var(--ink); }
.lead { max-width: 42em; margin-bottom: 28px; color: var(--slate); }

.calm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.calm-grid article {
  background: var(--white);
  padding: 28px;
  border: 1px solid #E2E8F0;
}
.block.pale .calm-grid article,
.rows article { background: var(--wash); }
.calm-grid h3, .rows h3, .two h3 { font-size: 18px; margin-bottom: 10px; }

.rows { display: grid; gap: 16px; }
.rows article {
  padding: 22px 28px;
  border-left: 3px solid var(--teal);
}

.defs { display: grid; gap: 0; }
.defs div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid #E2E8F0;
}
dt { font-weight: 650; color: var(--slate); }
dd { margin: 0; color: #334155; }

.step-bar {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step-bar li {
  background: var(--wash);
  padding: 24px 20px 28px;
}
.step-bar span {
  display: block;
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.step-bar h3 { font-size: 16px; margin-bottom: 8px; }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.two article { background: var(--white); padding: 32px; border: 1px solid #E2E8F0; }
.two p + p { margin-top: 12px; }

.plain { padding-left: 20px; max-width: 48em; }
.plain li { margin-bottom: 10px; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td {
  border: 1px solid #E2E8F0;
  padding: 14px 16px;
  text-align: left;
}
th { background: var(--slate); color: var(--white); font-weight: 600; }
td { background: var(--white); }
.note {
  margin-top: 24px;
  padding: 20px 24px;
  background: #ECFDF5;
  color: #134E4A;
}

.qa { display: grid; gap: 20px; }
.qa article {
  background: var(--white);
  padding: 24px 28px;
  border: 1px solid #E2E8F0;
}
.qa h3 { font-size: 17px; margin-bottom: 8px; }

footer {
  background: var(--ink);
  color: #CBD5E1;
  padding: 40px 0;
  font-size: 14px;
}
footer p + p { margin-top: 8px; }

@media (max-width: 900px) {
  .shell { width: calc(100% - 40px); }
  .hero-split, .calm-grid, .two, .step-bar, .defs div { grid-template-columns: 1fr; }
  .site-header .shell { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hero, .block { padding: 48px 0; }
}

#news .news-list { list-style: none; }
#news .news-list li { padding: 18px 0; border-bottom: 1px solid #e2e8f0; }
#news time { color: #14b8a6; font-size: 12px; font-weight: 600; letter-spacing: 0.04em; }
#news .news-list h3 { color: #334155; font-size: 18px; margin: 8px 0 6px; font-weight: 600; }