:root {
  color-scheme: light;
  --bg: #f5f8ff;
  --ink: #142033;
  --muted: #5d6f8c;
  --line: #dce5f5;
  --card: #ffffff;
  --navy: #101936;
  --navy-2: #172442;
  --blue: #2563eb;
  --cyan: #06b6d4;
  --green: #18b981;
  --amber: #f59e0b;
  --shadow: 0 24px 70px rgba(30, 51, 92, .14);
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(37, 99, 235, .14), transparent 30%),
    radial-gradient(circle at 92% 0%, rgba(6, 182, 212, .16), transparent 26%),
    linear-gradient(180deg, #f7fbff 0%, var(--bg) 44%, #eef4ff 100%);
}

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

.skip-link {
  position: absolute;
  left: -999px;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 20;
  padding: 10px 14px;
  color: #fff;
  background: var(--blue);
  border-radius: 10px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(245, 248, 255, .76);
  border-bottom: 1px solid rgba(220, 229, 245, .8);
}

.nav {
  width: min(1180px, calc(100% - 40px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: .02em;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-download,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 14px;
  padding: 0 20px;
  font-weight: 800;
  white-space: nowrap;
}

.nav-download {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #6d5dfc);
  box-shadow: 0 12px 26px rgba(37, 99, 235, .22);
}

.hero {
  width: min(1180px, calc(100% - 40px));
  margin: 54px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 500px);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .1em;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(46px, 7vw, 82px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  color: #40516f;
  font-size: 19px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button.primary {
  min-height: 54px;
  color: #fff;
  background: linear-gradient(135deg, #10b981, var(--blue));
  box-shadow: 0 18px 36px rgba(37, 99, 235, .24);
}

.button.secondary {
  min-height: 54px;
  color: var(--navy);
  background: #fff;
  border: 1px solid var(--line);
}

.button.light {
  color: var(--navy);
  background: #fff;
  box-shadow: none;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.trust-row span {
  padding: 8px 12px;
  color: #2f4262;
  background: rgba(255, 255, 255, .72);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.hero-visual {
  min-width: 0;
  width: 100%;
}

.screenshot-frame {
  width: min(100%, 500px);
  margin: 0;
  padding: 12px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(16, 25, 54, .98), rgba(23, 36, 66, .96)),
    radial-gradient(circle at 86% 10%, rgba(37, 99, 235, .28), transparent 34%);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 30px;
  box-shadow: 0 30px 80px rgba(16, 32, 66, .26);
}

.screenshot-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .28);
}

.app-preview {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  min-height: 460px;
  overflow: hidden;
  background: var(--navy);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 32px;
  box-shadow: var(--shadow);
}

.preview-sidebar {
  padding: 28px 18px;
  color: #fff;
  background: #080d1e;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.preview-sidebar img {
  width: 56px;
  height: 56px;
  border-radius: 18px;
}

.preview-sidebar span {
  font-size: 13px;
  font-weight: 900;
  text-align: center;
}

.preview-sidebar i {
  display: block;
  width: 82px;
  height: 28px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .08);
}

.preview-sidebar i:first-of-type {
  background: rgba(37, 99, 235, .42);
}

.preview-main {
  padding: 26px;
  color: #fff;
}

.preview-top,
.preview-panels {
  display: grid;
  gap: 14px;
}

.preview-top {
  grid-template-columns: 1fr auto;
  align-items: center;
  margin-bottom: 18px;
}

.preview-top span {
  padding: 7px 12px;
  color: #57f2a6;
  background: rgba(16, 185, 129, .12);
  border: 1px solid rgba(16, 185, 129, .24);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat-grid div,
.preview-panels div {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 18px;
  padding: 16px;
}

.stat-grid small {
  display: block;
  color: #93a4c7;
  font-weight: 700;
  margin-bottom: 10px;
}

.stat-grid b {
  font-size: 24px;
}

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

.preview-panels strong {
  display: block;
  margin-bottom: 12px;
}

.preview-panels p {
  margin: 8px 0;
  padding: 10px 12px;
  color: #dbe8ff;
  background: rgba(255, 255, 255, .05);
  border-radius: 12px;
  font-size: 13px;
}

.preview-panels .green {
  color: #5af0a6;
}

.preview-panels .cyan {
  color: #56e5ff;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 92px auto 0;
}

.section.compact {
  margin-top: 44px;
}

.answer-card {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 22px 24px;
  color: #1a2b46;
  background: rgba(255, 255, 255, .82);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 18px 42px rgba(41, 65, 103, .08);
}

.answer-card strong {
  color: var(--blue);
  white-space: nowrap;
}

.cost-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.cost-grid article {
  padding: 22px 24px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(16, 25, 54, .96), rgba(37, 99, 235, .84)),
    radial-gradient(circle at 88% 12%, rgba(6, 182, 212, .55), transparent 32%);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 22px;
  box-shadow: 0 18px 42px rgba(41, 65, 103, .12);
}

.cost-grid strong,
.cost-grid span {
  display: block;
}

.cost-grid strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.cost-grid span {
  color: #dce9ff;
  line-height: 1.72;
}

.section-head {
  max-width: 780px;
  margin-bottom: 28px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article,
.scene-list div,
.price-grid div,
.requirements-grid article,
.faq-grid article {
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 18px 42px rgba(41, 65, 103, .08);
}

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

.feature-grid .icon {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: 14px;
  font-weight: 900;
}

.feature-grid h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.feature-grid p,
.muted,
.scene-list span,
.faq-grid p,
.download-band p {
  color: var(--muted);
  line-height: 1.78;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 34px;
  align-items: start;
}

.scene-list {
  display: grid;
  gap: 14px;
}

.scene-list div {
  padding: 20px 22px;
}

.scene-list b,
.scene-list span {
  display: block;
}

.scene-list b {
  margin-bottom: 6px;
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.requirements-grid article {
  min-height: 142px;
  padding: 22px;
}

.requirements-grid strong,
.requirements-grid span {
  display: block;
}

.requirements-grid strong {
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 18px;
}

.requirements-grid span {
  color: var(--muted);
  line-height: 1.72;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.price-grid div {
  padding: 24px;
  text-align: center;
}

.price-grid strong,
.price-grid span {
  display: block;
}

.price-grid b {
  display: block;
  margin: 10px 0 8px;
  color: var(--blue);
  font-size: 34px;
}

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

.download-band {
  width: min(1180px, calc(100% - 40px));
  margin: 92px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(16, 25, 54, .96), rgba(37, 99, 235, .9)),
    radial-gradient(circle at 80% 20%, rgba(6, 182, 212, .5), transparent 36%);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.download-band .eyebrow,
.download-band p {
  color: #dce9ff;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-grid article {
  padding: 20px 22px;
}

.faq-grid h3 {
  margin-bottom: 10px;
  font-weight: 900;
  font-size: 18px;
}

.faq-grid p {
  margin: 0;
}

.footer {
  width: min(1180px, calc(100% - 40px));
  margin: 80px auto 34px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.footer strong,
.footer span {
  display: block;
}

.footer strong {
  color: var(--ink);
}

.footer a {
  color: var(--blue);
  font-weight: 900;
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

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

  .hero {
    margin-top: 34px;
  }

  .hero-visual {
    order: -1;
  }

  .screenshot-frame {
    width: min(100%, 720px);
    margin: 0 auto;
  }

  .feature-grid,
  .requirements-grid,
  .price-grid,
  .cost-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav {
    width: min(100% - 28px, 1180px);
    gap: 12px;
  }

  .brand span {
    display: none;
  }

  .nav-download {
    margin-left: auto;
    padding: 0 14px;
  }

  .hero,
  .section,
  .download-band,
  .footer {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 48px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .app-preview {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .preview-sidebar {
    display: none;
  }

  .preview-main {
    padding: 18px;
  }

  .stat-grid,
  .preview-panels,
  .feature-grid,
  .cost-grid,
  .requirements-grid,
  .price-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .answer-card,
  .download-band,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}