:root {
  color: #0b1f35;
  background: #edf8fe;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; letter-spacing: 0; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; }
button, a { font: inherit; }

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  min-height: 68px;
  padding: 10px max(18px, calc((100vw - 1440px) / 2));
  border-bottom: 1px solid #c9e5f2;
  background: rgba(255, 255, 255, .97);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  min-width: 0;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand img { width: 40px; height: 40px; border-radius: 7px; }
.brand span { min-width: 0; display: grid; }
.brand strong { font-size: 15px; }
.brand small { color: #63788a; font-size: 11px; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  min-height: 36px;
  padding: 0 12px;
  border-radius: 6px;
  color: #49687e;
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
}
.topbar nav a:hover,
.topbar nav a.active { color: #04739d; background: #e0f5ff; }

.deploy-hero {
  position: relative;
  min-height: min(820px, calc(100dvh - 68px));
  overflow: hidden;
  color: #fff;
  background: #07111d;
}
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 12, 24, .94) 0%, rgba(2, 12, 24, .72) 37%, rgba(2, 12, 24, .12) 74%),
              linear-gradient(0deg, rgba(2, 12, 24, .82) 0%, transparent 42%);
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(1440px, 100%);
  min-height: inherit;
  margin: 0 auto;
  padding: clamp(88px, 12vh, 150px) 24px 46px;
  display: flex;
  min-width: 0;
  align-items: flex-start;
  flex-direction: column;
  justify-content: flex-end;
}
.eyebrow {
  margin: 0 0 8px;
  color: #58c8ed;
  font-size: 12px;
  font-weight: 850;
}
h1 {
  width: 100%;
  max-width: 720px;
  margin: 0;
  font-size: 72px;
  line-height: 1.05;
  overflow-wrap: anywhere;
}
.summary {
  width: 100%;
  max-width: 650px;
  margin: 18px 0 26px;
  color: #d8e7ef;
  font-size: 17px;
  line-height: 1.7;
}
.platform-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.platform-badge {
  border: 1px solid rgba(169, 220, 239, .45);
  border-radius: 7px;
  background: rgba(7, 27, 42, .76);
  min-height: 40px;
  padding: 0 16px;
  color: #e6f5fb;
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 800;
}
.platform-badge.upcoming {
  border-style: dashed;
  color: #a9bdc9;
  background: rgba(7, 27, 42, .5);
}
.hero-actions {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 15px;
}
.download-button {
  min-height: 48px;
  padding: 0 20px;
  border-radius: 7px;
  color: #fff;
  background: #0ea5d7;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 850;
  text-decoration: none;
}
.download-button:hover { background: #078bb8; }
.hero-actions span { max-width: 360px; color: #c7d7df; font-size: 12px; line-height: 1.5; }

.install-band,
.feature-band,
.requirements-band {
  padding: 70px max(20px, calc((100vw - 1200px) / 2));
}
.install-band { background: #fff; }
.feature-band { border-block: 1px solid #c9e5f2; background: #e8f7fd; }
.requirements-band { background: #fff; }
.section-heading p {
  margin: 0 0 6px;
  color: #078bb8;
  font-size: 12px;
  font-weight: 850;
}
.section-heading h2 { margin: 0 0 30px; font-size: 30px; }
#install-steps {
  margin: 0;
  padding: 0;
  counter-reset: install;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
#install-steps li {
  min-width: 0;
  padding: 24px 28px 24px 64px;
  border-left: 1px solid #c9e5f2;
  counter-increment: install;
  display: grid;
  gap: 8px;
  position: relative;
}
#install-steps li:first-child { border-left: 0; }
#install-steps li::before {
  content: counter(install);
  position: absolute;
  left: 24px;
  top: 21px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  background: #0ea5d7;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 850;
}
#install-steps span { color: #5f7688; font-size: 13px; line-height: 1.6; }
.install-meta {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #dcecf3;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 30px;
  color: #506d80;
  font-size: 12px;
}
.install-meta a { color: #047da9; font-weight: 750; text-decoration: none; }
.install-meta a:hover { text-decoration: underline; }
code { padding: 2px 5px; border-radius: 4px; background: #eaf6fb; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  border: 1px solid #bcddea;
  background: #bcddea;
}
.feature-grid article {
  min-width: 0;
  padding: 25px 22px;
  background: #f7fcff;
}
.feature-grid strong { font-size: 15px; }
.feature-grid p { margin: 10px 0 0; color: #587184; font-size: 13px; line-height: 1.65; }
.requirements {
  border-block: 1px solid #d8eaf2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.requirements div {
  padding: 18px 12px;
  border-bottom: 1px solid #d8eaf2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.requirements div:nth-last-child(-n+2) { border-bottom: 0; }
.requirements span { color: #648094; font-size: 12px; }
.requirements strong { text-align: right; font-size: 13px; }
.license-note { margin: 24px 0 0; color: #647b8c; font-size: 12px; }
.license-note a { color: #047da9; }
footer {
  min-height: 74px;
  padding: 20px max(20px, calc((100vw - 1200px) / 2));
  color: #587184;
  background: #e8f7fd;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
}
footer a { color: #047da9; text-decoration: none; }

@media (max-width: 820px) {
  .topbar { position: static; flex-wrap: wrap; padding: 9px 12px; gap: 8px; }
  .topbar nav { width: 100%; padding-top: 7px; border-top: 1px solid #c9e5f2; overflow-x: auto; }
  .topbar nav a { padding: 0 9px; }
  .deploy-hero { min-height: 720px; }
  .hero-shade {
    background: linear-gradient(0deg, rgba(2, 12, 24, .96) 0%, rgba(2, 12, 24, .7) 54%, rgba(2, 12, 24, .16) 100%);
  }
  .hero-content { padding: 160px 16px 28px; justify-content: flex-end; }
  h1 { font-size: 38px; }
  .summary { font-size: 15px; }
  .hero-actions { width: 100%; align-items: flex-start; flex-direction: column; }
  .download-button { width: 100%; justify-content: center; }
  .install-band, .feature-band, .requirements-band { padding: 48px 16px; }
  #install-steps { grid-template-columns: minmax(0, 1fr); }
  #install-steps li { border-left: 0; border-top: 1px solid #c9e5f2; }
  #install-steps li:first-child { border-top: 0; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .brand strong { font-size: 13px; }
  .platform-options { width: 100%; }
  .platform-badge { width: 100%; justify-content: center; }
  .feature-grid, .requirements { grid-template-columns: minmax(0, 1fr); }
  .requirements div, .requirements div:nth-last-child(-n+2) { border-bottom: 1px solid #d8eaf2; }
  .requirements div:last-child { border-bottom: 0; }
}