/* 第13套：靛蓝设备轨。Hero 左文右三卡竖轨，和表先导/工作台列表/诊断剪贴板不是同一骨架。 */
:root {
  --indigo: #4338ca;
  --indigo-deep: #312e81;
  --wash: #eef2ff;
  --card: #ffffff;
  --ink: #1e1b4b;
  --muted: #4338ca;
  --dim: #4c4a6a;
  --line: #c7d2fe;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

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

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

svg {
  display: block;
}

.indigo-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem 1.2rem;
  padding: 0.9rem 5vw;
  background: var(--indigo);
  color: #eef2ff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #eef2ff;
  text-decoration: none;
  font-weight: 700;
}

.brand svg {
  width: 28px;
  height: 28px;
}

.rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
}

.rail-nav a {
  color: #c7d2fe;
  text-decoration: none;
  font-size: 0.92rem;
}

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(220px, 0.75fr);
  gap: 1.4rem 2rem;
  padding: 2rem 5vw 1.4rem;
  align-items: start;
}

.hero-copy h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.35;
}

.hero-copy p {
  margin: 0 0 0.75rem;
  color: var(--dim);
  max-width: 40rem;
}

.device-rail {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.device-card {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.7rem;
  background: var(--card);
  border-left: 5px solid var(--indigo);
  padding: 0.75rem 0.9rem;
}

.device-card svg {
  grid-row: 1 / span 2;
  width: 36px;
  height: 36px;
  color: var(--indigo);
  align-self: center;
}

.device-card h3 {
  margin: 0;
  font-size: 0.95rem;
}

.device-card p {
  margin: 0.15rem 0 0;
  font-size: 0.85rem;
  color: var(--dim);
}

.meaning-block,
.keep-block,
.roles-block,
.drop-block,
.order-block,
.safe-block,
.myth-block,
.faq-block {
  padding: 1.4rem 5vw 1.8rem;
}

.meaning-block h2,
.keep-block h2,
.roles-block h2,
.drop-block h2,
.order-block h2,
.safe-block h2,
.myth-block h2,
.faq-block h2 {
  margin: 0 0 0.7rem;
  font-size: 1.38rem;
}

.meaning-block > p,
.keep-block > p,
.roles-block > p,
.drop-block > p,
.order-block > p,
.safe-block > p,
.myth-block > p,
.faq-block > p {
  margin: 0 0 0.7rem;
  color: var(--dim);
  max-width: 52rem;
}

.tri-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

.ink-card {
  background: var(--card);
  padding: 1rem 1.05rem;
  border: 1px solid var(--line);
}

.ink-card svg {
  width: 32px;
  height: 32px;
  color: var(--indigo);
}

.ink-card h3,
.keep-notes h3,
.drop-card h3,
.order-track h3,
.safe-pair h3,
.myth-grid h3 {
  margin: 0.45rem 0 0.4rem;
  font-size: 1.05rem;
}

.ink-card p,
.keep-notes p,
.drop-card p,
.order-track p,
.safe-pair p,
.myth-grid p {
  margin: 0 0 0.5rem;
  color: var(--dim);
}

.keep-steps {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.keep-steps li {
  flex: 1 1 180px;
  display: flex;
  gap: 0.6rem;
  background: var(--card);
  padding: 0.8rem 0.9rem;
  border-top: 3px solid var(--indigo);
}

.keep-steps span {
  flex: 0 0 1.6rem;
  height: 1.6rem;
  border-radius: 999px;
  background: var(--indigo);
  color: #eef2ff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.keep-steps p {
  margin: 0;
  color: var(--dim);
}

.keep-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.keep-notes article,
.safe-pair article {
  background: var(--card);
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
}

.table-wrap {
  overflow-x: auto;
  margin-top: 0.8rem;
  background: var(--card);
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  text-align: left;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--indigo);
  color: #eef2ff;
  font-weight: 600;
}

.drop-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.drop-card {
  background: var(--card);
  padding: 0.9rem 1rem;
  border: 1px dashed var(--indigo);
}

.drop-card svg {
  width: 30px;
  height: 30px;
  color: var(--indigo);
}

.order-track {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  counter-reset: none;
}

.order-track li {
  background: var(--card);
  padding: 0.9rem 1rem;
  border-bottom: 4px solid var(--indigo);
}

.order-track em {
  display: block;
  font-style: normal;
  color: var(--indigo);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.safe-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin-top: 0.8rem;
}

.myth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.myth-grid article {
  background: var(--card);
  padding: 0.95rem 1.05rem;
  box-shadow: 0 0 0 1px var(--line);
}

.myth-grid svg {
  width: 30px;
  height: 30px;
  color: var(--indigo);
}

.faq-block details {
  background: var(--card);
  border: 1px solid var(--line);
  margin: 0.55rem 0;
  padding: 0.2rem 0.9rem 0.3rem;
}

.faq-block summary {
  cursor: pointer;
  font-weight: 650;
  padding: 0.7rem 0;
}

.faq-block details p {
  margin: 0 0 0.8rem;
  color: var(--dim);
}

.indigo-foot {
  background: var(--indigo-deep);
  color: #c7d2fe;
  padding: 1.4rem 5vw 1.8rem;
}

.indigo-foot p {
  margin: 0 0 0.4rem;
}

@media (max-width: 900px) {
  .hero-split,
  .tri-cards,
  .keep-notes,
  .drop-grid,
  .order-track,
  .safe-pair,
  .myth-grid {
    grid-template-columns: 1fr;
  }
}