:root {
  --ink: #111827;
  --muted: #5d6678;
  --line: #dce3ec;
  --paper: #ffffff;
  --soft: #f5f7fb;
  --navy: #111a2b;
  --cyan: #00a7d8;
  --green: #10a66a;
  --amber: #d58b12;
  --red: #d95b59;
  --hero-image: url("assets/devops-hero.svg");
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background: var(--paper);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
  padding: 0 5vw;
  color: #fff;
  background: rgba(10, 16, 26, 0.74);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 206px;
  font-weight: 800;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, #00a7d8 0%, #10a66a 100%);
  box-shadow: 0 0 24px rgba(0, 167, 216, 0.42);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.82);
}

.nav-links a:hover {
  color: #fff;
}

.header-action,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action,
.primary-button {
  color: #07111d;
  background: #fff;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
}

.secondary-button {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: center;
  padding: 128px 5vw 88px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(6, 11, 19, 0.92) 0%, rgba(6, 11, 19, 0.74) 36%, rgba(6, 11, 19, 0.20) 76%),
    var(--hero-image),
    linear-gradient(135deg, #0c1322 0%, #193044 52%, #0d1f20 100%);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: auto 0 0;
  height: 180px;
  background: linear-gradient(180deg, rgba(245, 247, 251, 0) 0%, #f5f7fb 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  font-size: 4rem;
  line-height: 1.04;
  font-weight: 900;
}

.hero-copy {
  max-width: 650px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.18rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 650px;
  margin: 54px 0 0;
}

.hero-metrics div {
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.hero-metrics dt {
  margin: 0;
  font-size: 2.2rem;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.section-shell {
  width: min(1180px, 90vw);
  margin: 0 auto;
}

.intro {
  padding: 76px 0 92px;
}

.intro-grid,
.architecture-layout,
.quote-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 56px;
  align-items: center;
}

h2 {
  margin: 0;
  font-size: 2.6rem;
  line-height: 1.18;
}

h3 {
  margin: 0;
  font-size: 1.1rem;
}

p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.intro-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 22px 70px rgba(17, 24, 39, 0.09);
}

.intro-summary div {
  min-height: 126px;
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.intro-summary div:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.intro-summary div:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.intro-summary span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.intro-summary strong {
  display: block;
  margin-top: 14px;
  font-size: 1.08rem;
}

.results-band {
  padding: 92px 0;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(17, 26, 43, 0.98), rgba(16, 47, 55, 0.96)),
    radial-gradient(circle at 76% 18%, rgba(16, 166, 106, 0.2), transparent 28%);
}

.results-band .section-kicker,
.architecture-band .section-kicker {
  color: #77d8eb;
}

.results-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
}

.results-heading p {
  max-width: 460px;
  color: rgba(255, 255, 255, 0.68);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 44px;
}

.results-grid article {
  min-height: 250px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.metric-value {
  display: block;
  margin-bottom: 28px;
  color: #77d8eb;
  font-size: 2.4rem;
  font-weight: 900;
}

.results-grid p {
  color: rgba(255, 255, 255, 0.68);
}

.approach,
.downloads {
  padding: 96px 0;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.65fr);
  gap: 44px;
  align-items: start;
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 54px;
}

.timeline article {
  min-height: 246px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 52px rgba(17, 24, 39, 0.07);
}

.timeline span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 26px;
  border-radius: 8px;
  color: #fff;
  background: var(--navy);
  font-weight: 900;
}

.timeline p {
  font-size: 0.95rem;
}

.architecture-band {
  padding: 96px 0;
  color: #fff;
  background: #0f1725;
}

.architecture-band p {
  color: rgba(255, 255, 255, 0.68);
}

.feature-list {
  display: grid;
  gap: 16px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 14px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
}

.feature-list span {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--green);
}

.architecture-panel {
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.04));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.pipeline-row {
  display: grid;
  grid-template-columns: 1fr 32px 1fr 32px 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
}

.pipeline-row span,
.platform-stack div {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border-radius: 8px;
  color: #eaf8fb;
  border: 1px solid rgba(119, 216, 235, 0.36);
  background: rgba(0, 167, 216, 0.12);
  font-weight: 800;
  text-align: center;
}

.pipeline-row i {
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--green));
}

.platform-stack {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.platform-stack div {
  justify-content: flex-start;
  min-height: 58px;
  background: rgba(255, 255, 255, 0.07);
}

.quote-band {
  padding: 72px 0;
  background: #eaf2f4;
}

blockquote {
  margin: 0;
  font-size: 2rem;
  line-height: 1.45;
  font-weight: 800;
}

.quote-layout div {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.quote-layout strong {
  color: var(--ink);
  font-size: 1.1rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 44px;
}

.download-card {
  min-height: 238px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(17, 24, 39, 0.07);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 167, 216, 0.42);
  box-shadow: 0 24px 64px rgba(17, 24, 39, 0.12);
}

.file-type {
  width: max-content;
  min-width: 52px;
  margin-bottom: 30px;
  padding: 7px 10px;
  border-radius: 8px;
  color: #fff;
  background: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  text-align: center;
}

.accent-green {
  background: var(--green);
}

.accent-amber {
  background: var(--amber);
}

.accent-red {
  background: var(--red);
}

.download-card strong {
  font-size: 1.08rem;
  line-height: 1.45;
}

.download-card small {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.7);
  background: #0b1019;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 68px;
    flex-wrap: wrap;
    padding: 14px 5vw;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero {
    min-height: 820px;
    padding-top: 160px;
    background-position: center right;
  }

  .hero h1 {
    font-size: 2.9rem;
  }

  .intro-grid,
  .architecture-layout,
  .quote-layout,
  .split-heading,
  .results-heading {
    grid-template-columns: 1fr;
    display: grid;
  }

  .results-heading {
    align-items: start;
  }

  .results-grid,
  .timeline,
  .download-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .header-action {
    display: none;
  }

  .brand {
    min-width: auto;
  }

  .hero {
    min-height: 760px;
    padding-top: 150px;
  }

  .hero h1 {
    font-size: 2.32rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-metrics,
  .intro-summary,
  .results-grid,
  .timeline,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .intro-summary div,
  .intro-summary div:nth-child(odd) {
    border-right: 0;
  }

  .intro-summary div:nth-last-child(2) {
    border-bottom: 1px solid var(--line);
  }

  h2 {
    font-size: 2rem;
  }

  blockquote {
    font-size: 1.45rem;
  }

  .pipeline-row {
    grid-template-columns: 1fr;
  }

  .pipeline-row i {
    width: 2px;
    height: 20px;
    margin: 0 auto;
  }

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