:root {
  --landing-ink: #111827;
  --landing-muted: #667085;
  --landing-line: #e6e9f0;
  --landing-primary: #5757e8;
  --landing-primary-dark: #4242c7;
  --landing-bg: #f6f8fc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--landing-ink);
  background: #fff;
  font-family: "Microsoft YaHei UI", "Segoe UI", sans-serif;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
svg { width: 18px; height: 18px; stroke-width: 1.8; }

.landing-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(190px, 1fr);
  align-items: center;
  height: 76px;
  padding: 0 clamp(24px, 5vw, 84px);
  border-bottom: 1px solid var(--landing-line);
  background: rgba(255, 255, 255, 0.96);
}
.landing-brand { display: inline-flex; align-items: center; gap: 11px; justify-self: start; }
.landing-brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--landing-primary);
  font-size: 17px;
  font-weight: 800;
}
.landing-brand strong, .landing-brand small { display: block; }
.landing-brand strong { font-size: 15px; }
.landing-brand small { margin-top: 2px; color: var(--landing-muted); font-size: 11px; }
.landing-nav { display: flex; align-items: center; gap: 36px; color: #475467; font-size: 13px; }
.landing-nav a:hover { color: var(--landing-primary); }
.landing-console-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  justify-self: end;
  min-height: 38px;
  padding: 0 16px;
  border-radius: 7px;
  color: #fff;
  background: var(--landing-primary);
  font-size: 13px;
  font-weight: 600;
}
.landing-console-link:hover, .landing-primary-btn:hover { background: var(--landing-primary-dark); }

.landing-hero {
  position: relative;
  height: min(720px, calc(100svh - 112px));
  min-height: 570px;
  overflow: hidden;
  border-bottom: 1px solid var(--landing-line);
  background: #eef1f7;
}
.landing-hero-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.landing-hero-scrim { position: absolute; inset: 0 auto 0 0; width: min(760px, 58vw); background: rgba(255,255,255,.92); }
.landing-hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  width: min(650px, 50vw);
  height: 100%;
  margin-left: clamp(24px, 7vw, 112px);
  flex-direction: column;
  justify-content: center;
  padding: 44px 40px 44px 0;
}
.landing-eyebrow {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 8px;
  color: var(--landing-primary);
  font-size: 13px;
  font-weight: 700;
}
.landing-eyebrow svg { width: 16px; height: 16px; }
.landing-hero h1 { max-width: 610px; margin: 22px 0 20px; font-size: clamp(42px, 4.4vw, 66px); line-height: 1.14; }
.landing-hero-content > p { max-width: 580px; margin: 0; color: #475467; font-size: 16px; line-height: 1.9; }
.landing-hero-actions { display: flex; gap: 12px; margin-top: 32px; }
.landing-primary-btn, .landing-secondary-btn {
  display: inline-flex;
  min-height: 46px;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 600;
}
.landing-primary-btn { color: #fff; background: var(--landing-primary); }
.landing-secondary-btn { border: 1px solid #cfd4df; background: rgba(255,255,255,.8); color: #344054; }
.landing-secondary-btn:hover { border-color: var(--landing-primary); color: var(--landing-primary); }
.landing-proof { display: flex; gap: 0; margin: 38px 0 0; }
.landing-proof div { min-width: 118px; padding-right: 24px; margin-right: 24px; border-right: 1px solid #d8dde7; }
.landing-proof div:last-child { border-right: 0; }
.landing-proof dt { font-size: 16px; font-weight: 800; }
.landing-proof dd { margin: 4px 0 0; color: var(--landing-muted); font-size: 12px; }

.landing-section { padding: 92px clamp(24px, 7vw, 112px); }
.landing-section-heading { max-width: 680px; margin: 0 auto 44px; text-align: center; }
.landing-section-heading > span, .landing-security div > div > span { color: var(--landing-primary); font-size: 12px; font-weight: 700; }
.landing-section-heading h2, .landing-security h2 { margin: 12px 0; font-size: 30px; line-height: 1.3; }
.landing-section-heading p { margin: 0; color: var(--landing-muted); line-height: 1.8; }
.landing-feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; max-width: 1220px; margin: auto; }
.landing-feature-grid article { min-height: 220px; padding: 28px; border: 1px solid var(--landing-line); border-radius: 8px; background: #fff; }
.landing-feature-grid article:hover { border-color: #cfd2ff; box-shadow: 0 14px 36px rgba(31,42,68,.08); }
.landing-feature-icon { display: grid; width: 44px; height: 44px; place-items: center; border-radius: 8px; color: #5557df; background: #eeeeff; }
.landing-feature-icon.cyan { color: #078ca5; background: #e6f8fb; }
.landing-feature-icon.green { color: #15814e; background: #eaf8f0; }
.landing-feature-icon.amber { color: #b36a00; background: #fff5df; }
.landing-feature-grid h3 { margin: 24px 0 10px; font-size: 17px; }
.landing-feature-grid p { margin: 0; color: var(--landing-muted); font-size: 13px; line-height: 1.8; }

.landing-workflow { background: var(--landing-bg); }
.landing-section-heading.compact { margin-bottom: 36px; }
.landing-workflow-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; max-width: 1120px; margin: auto; padding: 0; list-style: none; }
.landing-workflow-list li { display: flex; gap: 18px; padding: 12px 38px; border-right: 1px solid #dce1ea; }
.landing-workflow-list li:first-child { padding-left: 0; }
.landing-workflow-list li:last-child { padding-right: 0; border-right: 0; }
.landing-workflow-list b { color: var(--landing-primary); font-size: 13px; }
.landing-workflow-list h3 { margin: 0 0 10px; font-size: 17px; }
.landing-workflow-list p { margin: 0; color: var(--landing-muted); font-size: 13px; line-height: 1.8; }

.landing-security {
  display: grid;
  grid-template-columns: 1.25fr 1fr auto;
  align-items: center;
  gap: 48px;
  padding: 66px clamp(24px, 7vw, 112px);
  color: #fff;
  background: #111827;
}
.landing-security > div { display: flex; align-items: center; gap: 18px; }
.landing-security-icon { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #46516a; border-radius: 8px; color: #a5a7ff; }
.landing-security h2 { margin: 8px 0 0; font-size: 22px; }
.landing-security p { margin: 0; color: #abb5c5; font-size: 13px; line-height: 1.8; }
.landing-security > a { display: inline-flex; align-items: center; gap: 8px; color: #c7c8ff; font-size: 13px; font-weight: 700; white-space: nowrap; }
.landing-footer { display: flex; align-items: center; justify-content: space-between; padding: 24px clamp(24px, 7vw, 112px); color: var(--landing-muted); font-size: 12px; }
.landing-brand.compact { color: var(--landing-ink); }
.landing-brand.compact .landing-brand-mark { width: 30px; height: 30px; font-size: 14px; }

@media (max-width: 960px) {
  .landing-header { grid-template-columns: 1fr auto; }
  .landing-nav { display: none; }
  .landing-hero-scrim { width: 72vw; }
  .landing-hero-content { width: 64vw; }
  .landing-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .landing-security { grid-template-columns: 1fr; gap: 22px; }
}

@media (max-width: 640px) {
  .landing-header { height: 66px; padding: 0 16px; }
  .landing-brand small { display: none; }
  .landing-console-link { width: 38px; padding: 0; }
  .landing-console-link span { display: none; }
  .landing-hero { height: calc(100svh - 90px); min-height: 610px; max-height: 720px; }
  .landing-hero-media { object-position: 36% center; }
  .landing-hero-scrim { width: 100%; background: rgba(255,255,255,.9); }
  .landing-hero-content { width: auto; margin: 0; padding: 48px 24px; justify-content: flex-end; }
  .landing-hero h1 { margin: 18px 0; font-size: 40px; }
  .landing-hero-content > p { font-size: 14px; }
  .landing-hero-actions { flex-direction: column; align-items: stretch; }
  .landing-proof { gap: 0; margin-top: 28px; }
  .landing-proof div { min-width: 0; flex: 1; padding-right: 10px; margin-right: 10px; }
  .landing-proof dt { font-size: 13px; }
  .landing-proof dd { font-size: 10px; }
  .landing-section { padding: 68px 20px; }
  .landing-section-heading { text-align: left; }
  .landing-section-heading h2 { font-size: 25px; }
  .landing-feature-grid, .landing-workflow-list { grid-template-columns: 1fr; }
  .landing-feature-grid article { min-height: 0; }
  .landing-workflow-list li, .landing-workflow-list li:first-child, .landing-workflow-list li:last-child { padding: 22px 0; border-right: 0; border-bottom: 1px solid #dce1ea; }
  .landing-workflow-list li:last-child { border-bottom: 0; }
  .landing-security { padding: 52px 20px; }
  .landing-security > div { align-items: flex-start; }
  .landing-security h2 { font-size: 20px; }
  .landing-footer { padding: 20px; }
}