:root {
  --bg: #f7f9fc;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-solid: #ffffff;
  --text: #0f172a;
  --muted: #667085;
  --line: rgba(15, 23, 42, 0.1);
  --hairline: 0 0 0 1px rgba(15, 23, 42, 0.08), 0 22px 70px rgba(15, 23, 42, 0.07);
  --hairline-tight: 0 0 0 1px rgba(15, 23, 42, 0.08), 0 10px 32px rgba(15, 23, 42, 0.05);
  --blue: #1683ff;
  --blue-dark: #0b63ce;
  --green: #29bf65;
  --orange: #f59e0b;
  --red: #ff4f55;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 4%, rgba(22, 131, 255, 0.12), transparent 28rem),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 42%, #ffffff 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand,
.site-nav,
.hero-actions,
.button-row,
.status-row {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 760;
  font-size: 18px;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}

.site-nav {
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.site-nav a {
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(15, 23, 42, 0.05);
}

main {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.85fr);
  gap: 46px;
  align-items: center;
}

.hero {
  min-height: 720px;
  padding: 92px 0 72px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(46px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
}

.hero-text {
  max-width: 680px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.72;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 750;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.button-primary {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 12px 34px rgba(22, 131, 255, 0.22);
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.82);
}

.button-secondary:hover {
  background: #ffffff;
}

.status-row {
  gap: 8px;
  flex-wrap: wrap;
}

.status-row img {
  height: 22px;
}

.product-panel {
  position: relative;
  padding: 22px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--hairline);
  backdrop-filter: blur(22px);
}

.window-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
}

.window-dots span {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #ff5f57;
}

.window-dots span:nth-child(2) {
  background: #ffbd2e;
}

.window-dots span:nth-child(3) {
  background: #28c840;
}

.mock-toolbar,
.quota-card,
.mock-list > div,
.feature-grid article,
.download-card,
.system-grid > div {
  background: var(--surface);
  box-shadow: var(--hairline-tight);
}

.mock-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border-radius: var(--radius-md);
}

.mock-toolbar strong {
  display: block;
  margin-bottom: 4px;
  font-size: 22px;
}

.mock-toolbar span {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(15, 23, 42, 0.06);
  font-size: 13px;
  font-weight: 750;
}

.mock-toolbar button {
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  color: #ffffff;
  background: var(--blue);
  font: inherit;
  font-weight: 760;
}

.quota-card {
  margin: 18px 0;
  padding: 22px;
  border-radius: 22px;
}

.quota-row {
  display: grid;
  grid-template-columns: 42px 1fr 56px;
  align-items: center;
  gap: 16px;
}

.quota-row + .quota-row {
  margin-top: 20px;
}

.quota-row span,
.quota-row strong {
  font-size: 22px;
  font-weight: 780;
}

.quota-row strong {
  color: var(--green);
  text-align: right;
}

.quota-row.warning strong {
  color: var(--red);
}

.meter {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.09);
}

.meter i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.warning .meter i {
  background: var(--red);
}

.mock-list {
  display: grid;
  gap: 12px;
}

.mock-list > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
}

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

.section {
  padding: 72px 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 30px;
}

.feature-grid,
.download-grid,
.system-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-grid article,
.download-card,
.system-grid > div {
  border-radius: var(--radius-md);
}

.feature-grid article {
  min-height: 220px;
  padding: 24px;
}

.feature-mark {
  display: inline-flex;
  margin-bottom: 44px;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 780;
}

.feature-grid p,
.download-card p,
.system-grid p {
  color: var(--muted);
  line-height: 1.7;
}

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

.download-card {
  padding: 26px;
}

.button-row {
  gap: 10px;
  flex-wrap: wrap;
  margin: 22px 0;
}

code {
  display: block;
  overflow-x: auto;
  padding: 16px;
  border-radius: var(--radius-sm);
  color: #344054;
  background: rgba(15, 23, 42, 0.045);
  font-size: 13px;
  line-height: 1.55;
  white-space: nowrap;
}

.system-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.system-grid > div {
  padding: 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 34px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer span,
.site-footer a {
  font-weight: 700;
}

@media (max-width: 940px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
  }

  .section-grid,
  .feature-grid,
  .download-grid,
  .system-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 58px;
  }

  .product-panel {
    order: -1;
  }
}

@media (max-width: 620px) {
  main,
  .site-header,
  .site-footer {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 42px;
  }

  .product-panel {
    padding: 16px;
    border-radius: 22px;
  }

  .quota-row {
    grid-template-columns: 34px 1fr 48px;
    gap: 10px;
  }

  .site-footer {
    flex-direction: column;
  }
}