:root {
  color-scheme: dark;
  --bg: #111318;
  --panel: #191d24;
  --panel-2: #202733;
  --text: #f4f0e8;
  --muted: #b7b0a4;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #53c7a0;
  --accent-2: #efb75d;
  --ink: #16120d;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  background:
    radial-gradient(circle at 16% 8%, rgba(83, 199, 160, 0.18), transparent 30%),
    linear-gradient(135deg, #111318 0%, #18161a 48%, #202226 100%);
  color: var(--text);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--accent);
  color: #07140f;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 8px;
}

.nav a:hover,
.nav-action {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 48px;
  align-items: center;
  width: min(var(--max), calc(100% - 32px));
  min-height: calc(100vh - 78px);
  margin: 0 auto;
  padding: 56px 0 72px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 8vw, 78px);
  line-height: 0.98;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.08;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

.hero-text,
.split-section p,
.feature-card p,
.footer p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-text {
  max-width: 650px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: #07140f;
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--text);
}

.workspace {
  position: relative;
  min-height: 430px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(160deg, rgba(255,255,255,0.1), rgba(255,255,255,0.03));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.window-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 38px;
}

.window-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent-2);
}

.window-bar span:nth-child(2) {
  background: var(--accent);
}

.window-bar span:nth-child(3) {
  background: #8aa7ff;
}

.note-card {
  padding: 24px;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.note-card small,
.status-grid small {
  display: block;
  color: var(--muted);
}

.note-card strong {
  display: block;
  margin: 10px 0;
  font-size: 30px;
}

.note-card p {
  color: var(--muted);
  line-height: 1.6;
}

.note-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.note-grid div,
.activity {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 19, 24, 0.7);
}

.note-grid div {
  padding: 18px;
}

.note-grid strong {
  display: block;
  font-size: 28px;
}

.note-grid span {
  color: var(--muted);
  font-size: 14px;
}

.activity {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 15px 18px;
}

.activity p {
  margin: 0;
  color: var(--muted);
}

.pulse,
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(83, 199, 160, 0.14);
}

.section,
.split-section,
.status-band,
.footer {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 82px 0;
}

.section-head {
  max-width: 660px;
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  min-height: 240px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--accent-2);
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
  padding: 74px 0;
  border-top: 1px solid var(--line);
}

.timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.timeline span {
  color: var(--muted);
}

.status-band {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 74px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
}

.status-band h2 {
  margin-bottom: 0;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.status-grid div {
  min-height: 116px;
  padding: 18px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.status-grid strong {
  display: block;
  margin: 8px 0 6px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer strong,
.footer a {
  color: var(--text);
}

.footer p {
  margin: 8px 0 0;
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
  }

  .nav {
    display: none;
  }

  .hero,
  .split-section,
  .status-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .feature-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }

  .workspace {
    min-height: auto;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  .note-grid {
    grid-template-columns: 1fr;
  }
}