/* 第2套：深海军顶栏 + 全宽痛点 Hero + 2x2 + 竖时间线 + 表 + 三列节奏 + dl */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body {
  font-family: Georgia, "Songti SC", "SimSun", "Microsoft YaHei", serif;
  background: #F4F7FB;
  color: #0B1F3A;
  line-height: 1.75;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; }
.head-deep a:hover,
.menu-deep a:hover,
.base-navy a:hover {
  color: #3DDC97;
}

.head-deep {
  background: #0B1F3A;
  color: #F4F7FB;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 40px 16px;
}
.brand-lock {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.menu-deep {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  list-style: none;
  font-size: 13px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.blast-hero {
  background: #0B1F3A;
  color: #F4F7FB;
  padding: 52px 40px 48px;
}
.blast-hero h1 {
  max-width: 920px;
  font-size: 36px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 18px;
}
.blast-inner { max-width: 920px; }
.blast-hero p {
  margin-bottom: 12px;
  color: #E8EEF5;
  font-size: 17px;
}

.band {
  padding: 48px 40px;
}
.band-ink { background: #0B1F3A; color: #F4F7FB; }
.band-fog { background: #F4F7FB; color: #0B1F3A; }
.band-paper { background: #E8EEF5; color: #0B1F3A; }
.band h2 {
  font-size: 26px;
  margin-bottom: 14px;
  max-width: 960px;
}
.band-ink h2 { color: #3DDC97; }
.band-fog h2, .band-paper h2 { color: #0B1F3A; }
.band p { max-width: 960px; margin-bottom: 12px; }

.quad-pain {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 22px;
  background: #0B1F3A;
  border: 1px solid #0B1F3A;
}
.pain-cell {
  background: #F4F7FB;
  padding: 22px 20px;
}
.pain-cell svg { display: block; margin-bottom: 10px; }
.pain-cell strong {
  display: block;
  margin-bottom: 8px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.chrono {
  position: relative;
  margin: 28px 0 0 18px;
  padding-left: 28px;
  border-left: 3px solid #3DDC97;
}
.chrono-node {
  position: relative;
  margin-bottom: 28px;
  max-width: 860px;
}
.chrono-node::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #3DDC97;
  box-shadow: 0 0 0 4px #0B1F3A;
}
.chrono-node h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: #3DDC97;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.order-grid {
  width: 100%;
  max-width: 1000px;
  border-collapse: collapse;
  margin-top: 18px;
  background: #fff;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}
.order-grid th, .order-grid td {
  border: 1px solid #c5d0dc;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
.order-grid th {
  background: #0B1F3A;
  color: #F4F7FB;
}
.order-grid td:first-child {
  width: 72px;
  font-weight: 700;
  color: #0B1F3A;
}

.after-stack { max-width: 900px; margin-top: 16px; }
.after-stack article {
  padding: 16px 0;
  border-bottom: 1px dashed #9aa8b8;
}
.after-stack h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.gap-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 16px;
  max-width: 920px;
}
.gap-line {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid #3DDC97;
}
.gap-line span {
  font-weight: 700;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  color: #3DDC97;
}

.tempo-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
  margin-top: 20px;
}
.tempo-card {
  background: #fff;
  padding: 22px 18px;
  border-top: 6px solid #3DDC97;
}
.tempo-card svg { display: block; margin-bottom: 10px; }
.tempo-card strong {
  display: block;
  margin-bottom: 8px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.qa-dl { max-width: 920px; margin-top: 12px; }
.qa-dl dt {
  font-weight: 700;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  margin-top: 20px;
  color: #0B1F3A;
}
.qa-dl dd {
  margin: 8px 0 0;
  padding-left: 0;
}

.base-navy {
  background: #071526;
  color: #E8EEF5;
  padding: 36px 40px 24px;
  font-size: 14px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.base-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.base-navy h3 { color: #3DDC97; margin-bottom: 8px; font-size: 15px; }
.base-copy { margin-top: 20px; padding-top: 14px; border-top: 1px solid #1c3352; color: #9eb0c4; }

@media (max-width: 860px) {
  .head-deep, .quad-pain, .tempo-3, .base-cols, .gap-line {
    grid-template-columns: 1fr;
    flex-direction: column;
  }
  .head-deep { align-items: flex-start; }
}