:root {
  --ste-ink: #1C1917;
  --ste-rust: #C2410C;
  --ste-paper: #F5F0E8;
  --ste-stone: #44403C;
  --ste-amber: #FB923C;
  --ste-line: #D6D3D1;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body.ste-body {
  margin: 0;
  background: var(--ste-paper);
  color: var(--ste-stone);
  font-family: "IBM Plex Sans", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.ste-desk {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.ste-head {
  background: var(--ste-ink);
  color: var(--ste-paper);
}

.ste-head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding: 14px 0;
}

.ste-brand {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ste-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.ste-nav a {
  color: var(--ste-amber);
  text-decoration: none;
  font-size: 12px;
}

.ste-nav a:hover,
.ste-nav a:focus {
  text-decoration: underline;
}

.ste-hero {
  padding: 28px 0 10px;
  border-bottom: 4px solid var(--ste-rust);
}

.ste-hero h1 {
  margin: 0 0 12px;
  color: var(--ste-ink);
  font-size: clamp(25px, 3.8vw, 34px);
  line-height: 1.3;
}

.ste-hero p,
.ste-sec p {
  margin: 0 0 14px;
}

.ste-sec {
  padding: 24px 0 6px;
}

.ste-sec h2 {
  margin: 0 0 12px;
  color: var(--ste-ink);
  font-size: 23px;
}

.ste-perms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 10px 0 8px;
}

.ste-perm {
  padding: 16px 14px 12px;
  background: #ffffff;
  border: 1px solid var(--ste-line);
  border-top: 5px solid var(--ste-rust);
}

.ste-perm h3 {
  margin: 8px 0 6px;
  color: var(--ste-ink);
  font-size: 16px;
}

.ste-perm p {
  margin: 0;
  font-size: 14px;
}

.ste-svg {
  width: 32px;
  height: 32px;
  display: block;
}

.ste-table-wrap {
  overflow-x: auto;
  margin-top: 8px;
}

.ste-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  font-size: 14px;
}

.ste-table th,
.ste-table td {
  border: 1px solid var(--ste-line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.ste-table th {
  background: var(--ste-ink);
  color: var(--ste-paper);
}

.ste-boxes {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.ste-box {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  padding: 14px;
  background: #ffffff;
  border-left: 6px solid var(--ste-amber);
}

.ste-box strong {
  display: block;
  color: var(--ste-rust);
  font-size: 22px;
  line-height: 1.1;
}

.ste-box h3 {
  margin: 0 0 6px;
  color: var(--ste-ink);
  font-size: 17px;
}

.ste-box p {
  margin: 0;
  font-size: 14px;
}

.ste-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.ste-steps li {
  padding: 12px 10px;
  background: var(--ste-ink);
  color: var(--ste-paper);
}

.ste-steps span {
  display: block;
  margin-bottom: 6px;
  color: var(--ste-amber);
  font-size: 12px;
  font-weight: 700;
}

.ste-steps h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

.ste-steps p {
  margin: 0;
  font-size: 13px;
  color: #E7E5E4;
}

.ste-faq details {
  background: #ffffff;
  border: 1px solid var(--ste-line);
  margin-bottom: 8px;
  padding: 10px 12px 8px;
}

.ste-faq summary {
  cursor: pointer;
  color: var(--ste-ink);
  font-weight: 700;
}

.ste-faq p {
  margin: 10px 0 6px;
  font-size: 14px;
}

.ste-foot {
  margin-top: 20px;
  padding: 16px 0 26px;
  background: var(--ste-ink);
  color: #E7E5E4;
  font-size: 13px;
}

.ste-foot .ste-desk p {
  margin: 0 0 6px;
}

@media (max-width: 900px) {
  .ste-steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .ste-perms {
    grid-template-columns: 1fr;
  }

  .ste-steps {
    grid-template-columns: 1fr;
  }
}