:root {
  color-scheme: dark;
  --bg: #05070b;
  --ink: #f7fbff;
  --muted: #9aabba;
  --line: rgba(255, 255, 255, 0.14);
  --cyan: #2ee7ff;
  --green: #5cffb1;
  --panel: rgba(7, 16, 26, 0.78);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
}

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

.topbar {
  position: fixed;
  z-index: 10;
  inset: 0 0 auto 0;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 56px);
  background: rgba(3, 8, 15, 0.68);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand img {
  width: 34px;
  height: 34px;
}

nav {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 92svh;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 128px clamp(22px, 6vw, 88px) 72px;
}

.hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  transform: scale(1.04);
  animation: settle 900ms ease-out both;
}

.hero__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(2, 6, 12, 0.94), rgba(2, 6, 12, 0.7) 42%, rgba(2, 6, 12, 0.34)),
    linear-gradient(0deg, var(--bg), transparent 38%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  animation: rise 650ms ease-out both;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(44px, 8vw, 96px);
  line-height: 1;
  font-weight: 950;
}

h2 {
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.08;
  font-weight: 920;
}

.summary {
  max-width: 560px;
  margin: 22px 0 0;
  color: #d8e8f2;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.7;
}

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

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  padding: 0 22px;
  font-weight: 900;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  color: #021017;
  background: linear-gradient(135deg, var(--cyan), var(--green));
}

.button--ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.release,
.deploy,
.support {
  padding: clamp(64px, 9vw, 116px) clamp(22px, 6vw, 88px);
}

.release {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
  border-top: 1px solid var(--line);
}

.release p,
.support p {
  color: var(--muted);
  line-height: 1.8;
}

.release__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

dl div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

ul {
  margin: 22px 0 0;
  padding-left: 20px;
  color: #d7e5ef;
  line-height: 1.8;
}

.deploy {
  background: #07101a;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 36px;
  border: 1px solid var(--line);
}

.steps div {
  padding: 24px;
  background: rgba(255, 255, 255, 0.035);
}

.steps span {
  color: var(--green);
  font-weight: 950;
}

.steps p {
  margin: 18px 0 0;
  color: #d6e3ec;
  line-height: 1.7;
}

code {
  color: var(--cyan);
  font-family: "Cascadia Mono", Consolas, monospace;
}

.support {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
}

.support p {
  max-width: 580px;
  margin: 0;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(22px, 6vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes settle {
  from {
    transform: scale(1.08);
  }
  to {
    transform: scale(1.04);
  }
}

@media (max-width: 820px) {
  nav {
    display: none;
  }

  .hero {
    min-height: 86svh;
  }

  .release,
  .steps,
  .support {
    grid-template-columns: 1fr;
  }

  .support,
  footer {
    display: block;
  }

  footer span {
    display: block;
    margin-top: 8px;
  }
}