:root {
  --bg: #f5f4ef;
  --ink: #1f2933;
  --muted: #65727f;
  --panel: #ffffff;
  --line: #ded8cb;
  --yellow: #f7b731;
  --yellow-2: #ffe3a3;
  --steel: #455a64;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
a { color: inherit; }

.service-strip {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 32px;
  background: #1f2933;
  color: #fff;
  font-weight: 700;
}
.service-strip a { color: var(--yellow); text-decoration: none; }
.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
}
.brand b {
  font-size: 30px;
  letter-spacing: .03em;
}
.brand span { color: var(--muted); font-weight: 800; }
nav { display: flex; gap: 22px; color: var(--steel); font-weight: 700; }
nav a { text-decoration: none; }

.hero-service {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 32px;
  align-items: stretch;
  padding: 70px 7vw 54px;
  background:
    linear-gradient(135deg, rgba(247,183,49,.23), transparent 34%),
    linear-gradient(0deg, #fff, #fff 58%, #fbf3df);
}
.badge {
  display: inline-flex;
  margin: 0 0 14px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--yellow-2);
  color: #6f4b00;
  font-weight: 900;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 820px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.08;
  margin-bottom: 20px;
}
.lead {
  max-width: 760px;
  color: #51606d;
  font-size: 18px;
  line-height: 1.9;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 900;
}
.dark { background: #1f2933; color: #fff; }
.light { background: var(--yellow); color: #1f2933; }
.fault-card {
  padding: 28px;
  border: 2px solid #1f2933;
  border-radius: 6px;
  background: repeating-linear-gradient(-45deg, #fff 0 16px, #fff7df 16px 32px);
  box-shadow: 10px 10px 0 #1f2933;
}
.fault-card ul { margin: 0; padding-left: 20px; line-height: 1.9; }

.repair-board,
.parts-section,
.process,
.faq,
.contact {
  max-width: 1180px;
  margin: 0 auto;
  padding: 68px 24px;
}
.section-title {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 22px;
  align-items: end;
  margin-bottom: 28px;
}
.section-title p {
  color: #916600;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.section-title h2 {
  font-size: clamp(28px, 4vw, 46px);
  margin-bottom: 0;
}
.repair-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.repair-grid article,
.parts-table div,
.faq details,
.contact {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  padding: 22px;
}
.repair-grid span {
  display: inline-flex;
  color: #916600;
  font-weight: 900;
  margin-bottom: 14px;
}
.repair-grid p,
.parts-table span,
.faq p,
.contact p,
footer {
  color: var(--muted);
  line-height: 1.75;
}
.parts-table {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 3px solid #1f2933;
}
.parts-table div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-radius: 0;
  border-top: 0;
}
.parts-table b { min-width: 120px; }
.process ol {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  counter-reset: step;
}
.process li {
  position: relative;
  min-height: 150px;
  padding: 54px 20px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.process li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 20px;
  color: var(--yellow);
  font-size: 26px;
  font-weight: 900;
}
.process b,
.process span { display: block; }
.process span { color: var(--muted); margin-top: 8px; line-height: 1.65; }
.faq details { margin-bottom: 12px; }
.faq summary { cursor: pointer; font-weight: 900; }
.faq p { margin: 10px 0 0; }
.contact {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 54px;
}
footer {
  text-align: center;
  padding: 0 24px 42px;
}

@media (max-width: 980px) {
  .service-strip,
  .masthead { flex-direction: column; align-items: flex-start; padding: 14px 20px; }
  nav { width: 100%; overflow-x: auto; }
  .hero-service,
  .section-title,
  .repair-grid,
  .parts-table,
  .process ol {
    grid-template-columns: 1fr;
  }
  .hero-service { padding: 44px 20px; }
  .contact { flex-direction: column; align-items: flex-start; }
}