:root {
  --green: #075e54;
  --teal: #128c7e;
  --bubble: #dcf8c6;
  --ink: #111111;
  --paper: #f6f8f7;
  --card: #ffffff;
  --muted: #4a5553;
  --line: #c8d4d0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.75;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  background: var(--green);
  color: #fff;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
  padding: 8px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.brand svg {
  display: block;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: flex-end;
}

.nav a {
  color: #e8f6f3;
}

.hero {
  text-align: center;
  padding: 48px 0 28px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.35;
}

.hero p {
  margin: 0 auto 10px;
  max-width: 40em;
  color: var(--muted);
}

.section {
  padding: 28px 0 8px;
}

.section h2 {
  margin: 0 0 14px;
  font-size: 1.35rem;
}

.lead {
  margin: 0 0 12px;
  color: var(--muted);
}

.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0 8px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 18px 16px;
}

.card h3 {
  margin: 8px 0 10px;
  font-size: 1.05rem;
}

.card p {
  margin: 0 0 10px;
  color: #2a3331;
}

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

.ico {
  width: 36px;
  height: 36px;
  color: var(--teal);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 18px 0 12px;
}

.step {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  position: relative;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 10px;
}

.step p {
  margin: 0;
  font-size: 0.95rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  background: var(--card);
  border-radius: 16px;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--green);
  color: #fff;
}

tr:last-child td {
  border-bottom: 0;
}

.phone-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sleep {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sleep article {
  background: var(--bubble);
  border-radius: 16px;
  padding: 18px;
}

.sleep h3 {
  margin: 0 0 10px;
}

.when-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 16px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
}

.faq details p {
  margin: 10px 0 4px;
  color: #2a3331;
}

footer {
  margin-top: 40px;
  background: var(--green);
  color: #e8f6f3;
  padding: 28px 0 32px;
}

footer p {
  margin: 0 0 8px;
}

@media (max-width: 900px) {
  .trio,
  .steps,
  .phone-grid,
  .sleep,
  .when-grid {
    grid-template-columns: 1fr;
  }

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