:root {
  --teal: #0F766E;
  --teal-deep: #115E59;
  --teal-mid: #14B8A6;
  --paper: #FFFDF8;
  --sheet: #FFFFFF;
  --ink: #134E4A;
  --muted: #4B635F;
  --bar-a: #0F766E;
  --bar-b: #0EA5A4;
  --bar-c: #2DD4BF;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Georgia, "Songti SC", "STSong", "SimSun", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.8;
}

a {
  color: var(--teal);
}

.wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  background: var(--sheet);
  border-bottom: 2px solid var(--teal);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
}

.brand {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  color: var(--teal-deep);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.site-header nav a {
  text-decoration: none;
}

.hero {
  padding: 42px 0 18px;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.4;
}

.hero p {
  margin: 0;
  max-width: 42em;
  color: var(--muted);
}

.quote-stack {
  margin: 12px 0 36px;
  display: grid;
  gap: 0;
}

.bubble {
  background: var(--sheet);
  border: 1px solid #D7E8E4;
  padding: 16px 18px 16px 22px;
  position: relative;
}

.bubble + .bubble {
  margin-top: -6px;
}

.bubble::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 7px;
}

.bubble.one::before { background: var(--bar-a); }
.bubble.two::before { background: var(--bar-b); }
.bubble.three::before { background: var(--bar-c); }

.bubble.one { width: 92%; }
.bubble.two { width: 86%; margin-left: 6%; }
.bubble.three { width: 80%; margin-left: 12%; }

.bubble .meta {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  color: var(--teal);
  letter-spacing: 0.06em;
}

.bubble p {
  margin: 6px 0 0;
}

section {
  margin: 0 0 46px;
}

section h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

.card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.svg-card {
  background: var(--sheet);
  border-left: 6px solid var(--teal);
  padding: 14px 16px 16px;
  box-shadow: 0 10px 0 #E6F4F1;
}

.svg-card svg {
  width: 100%;
  height: 96px;
  display: block;
}

.svg-card h3,
.svg-card p {
  font-weight: 400;
}

.svg-card h3 {
  margin: 10px 0 6px;
  font-size: 16px;
  font-weight: 700;
}

.svg-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.panel {
  background: #F3FBFA;
  padding: 16px 18px;
  border-top: 3px solid var(--teal-mid);
}

.panel h3 {
  margin: 0 0 8px;
}

.steps {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.steps li {
  padding: 12px 0 12px 20px;
  border-left: 4px solid var(--teal-mid);
  margin-bottom: 8px;
  background: #F8FFFE;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--sheet);
}

th, td {
  border-bottom: 1px solid #D7E8E4;
  padding: 10px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--teal-deep);
}

.faq dt {
  font-weight: 700;
  margin: 18px 0 6px;
}

.faq dd {
  margin: 0 0 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--bar-c);
  color: var(--muted);
}

.site-footer {
  background: var(--teal-deep);
  color: #D1FAE5;
  padding: 28px 0 36px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.site-footer p {
  margin: 0 0 10px;
}

.site-footer a {
  color: #A7F3D0;
}

@media (max-width: 860px) {
  .bubble.one,
  .bubble.two,
  .bubble.three {
    width: 100%;
    margin-left: 0;
  }

  .card-row,
  .two-col {
    grid-template-columns: 1fr;
  }
}