:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --panel: #ffffff;
  --ink: #101828;
  --muted: #667085;
  --line: #d9e2ef;
  --blue: #2563eb;
  --blue-dark: #1742b0;
  --green: #16a36f;
  --amber: #d98a12;
  --shadow: 0 24px 70px rgba(39, 55, 77, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

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;
  padding: 16px max(24px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(217, 226, 239, 0.86);
  background: rgba(247, 249, 252, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

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

.brand strong {
  font-size: 17px;
}

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

nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  color: #475467;
  font-size: 14px;
}

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

.header-download,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.header-download,
.primary-action {
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.25);
}

.header-download:hover,
.primary-action:hover {
  background: var(--blue-dark);
}

.secondary-action {
  border: 1px solid var(--line);
  background: #ffffff;
  color: #344054;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  gap: 46px;
  align-items: center;
  width: min(1180px, calc(100vw - 48px));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  padding: 58px 0 72px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 670px;
  margin-bottom: 22px;
  font-size: clamp(42px, 5.1vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-text {
  max-width: 640px;
  color: #475467;
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.primary-action.large {
  min-height: 54px;
  padding: 0 30px;
  font-size: 17px;
}

.live-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 680px;
}

.live-strip span {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.live-strip b,
.live-strip em {
  display: block;
  font-style: normal;
}

.live-strip b {
  color: #475467;
  font-size: 12px;
}

.live-strip em {
  margin-top: 5px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.product-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: #f8fafc;
}

.window-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #b8c2d3;
}

.window-bar i:nth-child(1) {
  background: #e86f67;
}

.window-bar i:nth-child(2) {
  background: #e4b64b;
}

.window-bar i:nth-child(3) {
  background: #55bd7a;
}

.window-bar span {
  margin-left: auto;
  color: #667085;
  font-size: 13px;
  font-weight: 700;
}

.panel-grid {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  padding: 22px;
}

.panel-grid aside {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfdff;
}

.panel-grid aside b {
  display: block;
  margin-bottom: 16px;
}

.panel-grid aside p {
  margin-bottom: 10px;
  color: #475467;
}

.step-card {
  margin-bottom: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
}

.step-card.active {
  border-color: rgba(37, 99, 235, 0.45);
  background: #eef4ff;
}

.step-card small {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--blue);
  color: #ffffff;
  font-weight: 800;
}

.step-card strong {
  font-size: 16px;
}

.step-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.result-table {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.result-table div {
  display: grid;
  grid-template-columns: 64px 1fr 70px;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.result-table div:last-child {
  border-bottom: 0;
}

.result-table span,
.result-table em {
  color: #475467;
  font-style: normal;
  text-align: right;
}

.section,
.download-section,
footer {
  width: min(1180px, calc(100vw - 48px));
  margin: 0 auto;
}

.section {
  padding: 74px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2,
.download-section h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.15;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.download-section p {
  color: #5d6b82;
  font-size: 16px;
  line-height: 1.75;
}

.flow-grid,
.feature-list,
.plans {
  display: grid;
  gap: 16px;
}

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

.flow-grid article,
.feature-list div,
.plans article {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}

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

.flow-grid span {
  color: var(--amber);
  font-size: 13px;
  font-weight: 900;
}

.flow-grid h3,
.plans h3 {
  margin: 12px 0 10px;
  font-size: 22px;
}

.flow-grid p,
.feature-list p,
.plans p {
  color: #5d6b82;
  line-height: 1.75;
}

.feature-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.feature-list div {
  padding: 22px;
}

.feature-list strong {
  display: block;
  margin-bottom: 10px;
  font-size: 18px;
}

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

.plans article {
  min-height: 170px;
  padding: 26px;
}

.plans .highlight {
  border-color: rgba(37, 99, 235, 0.42);
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.11);
}

.download-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 32px;
  margin-bottom: 72px;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 18px 50px rgba(39, 55, 77, 0.1);
}

footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: #667085;
}

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

footer p {
  max-width: 580px;
  margin: 8px 0 0;
  line-height: 1.7;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 44px;
  }

  .flow-grid,
  .feature-list,
  .plans {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand small,
  .header-download {
    display: none;
  }

  .hero,
  .section,
  .download-section,
  footer {
    width: min(100% - 32px, 1180px);
  }

  h1 {
    font-size: 42px;
  }

  .live-strip,
  .panel-grid {
    grid-template-columns: 1fr;
  }

  .download-section,
  footer {
    display: block;
  }

  .download-section .primary-action {
    width: 100%;
    margin-top: 18px;
  }
}