:root {
  --bg: #080605;
  --bg-2: #100b08;
  --bg-3: #17100b;
  --panel: rgba(255, 244, 224, 0.055);
  --panel-strong: rgba(255, 244, 224, 0.095);
  --line: rgba(255, 244, 224, 0.14);
  --text: #f8efe2;
  --muted: #c9b6a0;
  --accent: #e2b45f;
  --accent-2: #f4d38f;
  --accent-ink: #24170d;
  --shadow: rgba(0, 0, 0, 0.4);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 4%, rgba(226, 180, 95, 0.14), transparent 30rem),
    radial-gradient(circle at 88% 0%, rgba(255, 245, 220, 0.05), transparent 28rem),
    linear-gradient(145deg, var(--bg), var(--bg-2) 55%, var(--bg-3));
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.7;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 14px;
  z-index: 20;
  margin: 14px auto 0;
  width: min(1220px, calc(100% - 28px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 244, 224, 0.12), rgba(255, 244, 224, 0.055));
  backdrop-filter: blur(20px) saturate(1.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 18px 50px rgba(0, 0, 0, 0.28);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 0;
}
.brand img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  box-shadow: 0 10px 26px rgba(226, 180, 95, 0.2);
}
.brand-name {
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  padding: 8px 11px;
  border-radius: 999px;
  transition: 160ms ease;
}
.nav a:hover, .nav a.active {
  color: var(--text);
  background: rgba(255, 244, 224, 0.07);
}

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  color: var(--text);
  font: inherit;
  font-size: 13px;
  padding: 12px 18px;
  border-radius: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.055));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 14px 34px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.btn:hover { transform: translateY(-1px); border-color: rgba(244, 211, 143, 0.6); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn.primary {
  color: var(--accent-ink);
  background: linear-gradient(145deg, var(--accent-2), var(--accent));
  border-color: rgba(255, 255, 255, 0.24);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.36), 0 18px 42px rgba(226, 180, 95, 0.26);
}
.btn.ghost { background: rgba(255, 244, 224, 0.035); }

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 30px;
  align-items: center;
  padding: 84px 0 46px;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent-2);
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  margin-bottom: 20px;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 5px rgba(226, 180, 95, 0.14);
}
h1, h2, h3 { font-weight: 500; letter-spacing: -0.03em; }
h1 {
  font-size: clamp(38px, 5.5vw, 68px);
  line-height: 1.05;
  margin: 0 0 20px;
}
.accent { color: var(--accent-2); }
.lead {
  color: var(--muted);
  font-size: 16px;
  max-width: 660px;
  margin: 0 0 26px;
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.small-note { color: var(--muted); font-size: 12px; }

.window {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(160deg, var(--panel-strong), var(--panel));
  backdrop-filter: blur(22px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.13), 0 30px 80px var(--shadow);
  padding: 14px;
  min-height: 360px;
}
.window-bar { display: flex; gap: 7px; padding: 2px 4px 13px; }
.window-bar span { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.app-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.app-panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.18);
  padding: 14px;
  min-height: 88px;
}
.app-panel.wide { grid-column: 1 / -1; min-height: 132px; }
.label { color: var(--muted); font-size: 11px; }
.value { font-size: 24px; font-weight: 500; }
.bar {
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 10px 0;
}
.bar.short { width: 58%; opacity: 0.7; }
.bar.mid { width: 78%; opacity: 0.85; }

section { padding: 40px 0 10px; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.section-head h2 { margin: 0; font-size: 28px; }
.section-head p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.step {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--panel-strong), var(--panel));
  backdrop-filter: blur(16px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 18px 44px rgba(0, 0, 0, 0.18);
  padding: 16px;
  min-height: 128px;
}
.step b { color: var(--accent-2); font-weight: 500; }
.step strong { display: block; margin: 16px 0 4px; font-weight: 500; }
.step span { color: var(--muted); font-size: 12px; }

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.feature {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--panel-strong), var(--panel));
  backdrop-filter: blur(16px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 18px 44px rgba(0, 0, 0, 0.18);
  padding: 17px;
  min-height: 150px;
}
.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(226, 180, 95, 0.16);
  color: var(--accent-2);
  font-size: 18px;
}
.feature strong { display: block; margin: 15px 0 5px; font-weight: 500; }
.feature span { color: var(--muted); font-size: 12px; }

.split {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 16px;
  padding: 40px 0 20px;
}
.plan {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  background: linear-gradient(145deg, rgba(226, 180, 95, 0.12), var(--panel));
  backdrop-filter: blur(18px);
}
.plan h3 { margin: 0 0 8px; font-size: 23px; }
.plan p { color: var(--muted); font-size: 13px; margin: 0 0 18px; }

.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 72px 0 60px;
}
.page h1 { font-size: clamp(34px, 4.5vw, 52px); }
.page h2 { margin-top: 36px; font-size: 22px; }
.page p, .page li { color: var(--muted); }
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 20px;
  margin: 18px 0;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
  padding: 36px 0 28px;
  border-top: 1px solid var(--line);
  margin-top: 52px;
}
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--text); }

.page .panel p + p { margin-top: 10px; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1160px); }
  .topbar { top: 8px; border-radius: 22px; flex-wrap: wrap; }
  .nav { display: none; }
  .nav.open { display: flex; width: 100%; justify-content: flex-start; }
  .steps, .features { grid-template-columns: 1fr; }
  .hero { padding-top: 44px; }
  .window { min-height: auto; }
  .app-grid { grid-template-columns: 1fr; }
  .app-panel.wide { grid-column: auto; }
}