:root {
  color-scheme: light;
  --ink: #14211f;
  --muted: #5e6b68;
  --paper: #f7f8f4;
  --panel: #ffffff;
  --line: #dfe5de;
  --forest: #0f2a23;
  --teal: #00a99a;
  --cyan: #2bbbd8;
  --coral: #ef6b5a;
  --green: #74b85a;
  --gold: #e3aa35;
  --shadow: 0 24px 70px rgba(17, 33, 30, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

img {
  display: block;
  max-width: 100%;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 100;
  transform: translateY(-140%);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  padding: 10px 14px;
  box-shadow: var(--shadow);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 48px;
  color: #ffffff;
}

.brand,
.nav-links,
.nav-actions,
.hero-actions,
.hero-facts,
.footer-inner,
.friend-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.brand img {
  border-radius: 8px;
}

.nav-links {
  gap: 24px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.nav-actions {
  gap: 10px;
}

.nav-links a,
.nav-action,
.button {
  transition:
    color 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    transform 160ms ease;
}

.nav-links a:hover,
.nav-action:hover {
  color: #ffffff;
}

.nav-action {
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  padding: 9px 14px;
  color: #ffffff;
  font-size: 14px;
  white-space: nowrap;
}

.online-nav-action {
  border-color: rgba(0, 169, 154, 0.48);
  background: rgba(0, 169, 154, 0.18);
}

.hero {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  background: #101815;
  color: #ffffff;
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 64% center;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 14, 13, 0.94) 0%, rgba(9, 14, 13, 0.76) 35%, rgba(9, 14, 13, 0.22) 70%),
    linear-gradient(180deg, rgba(9, 14, 13, 0.18) 0%, rgba(9, 14, 13, 0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
  padding: 150px 0 56px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  font-size: 64px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 11px 18px;
  font-weight: 700;
}

.button.primary {
  background: var(--teal);
  color: #06211d;
}

.button.primary:hover {
  background: #33c2b5;
  transform: translateY(-1px);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #ffffff;
}

.button.secondary:hover {
  border-color: rgba(255, 255, 255, 0.7);
}

.button.secondary.quiet {
  color: rgba(255, 255, 255, 0.78);
}

.button.secondary.dark {
  border-color: rgba(6, 33, 29, 0.22);
  color: #06211d;
}

.button.secondary.dark:hover {
  border-color: rgba(6, 33, 29, 0.54);
}

.button.light {
  background: #ffffff;
  color: var(--forest);
}

.button.disabled {
  pointer-events: none;
  opacity: 0.62;
}

.download-button::before {
  content: "";
  width: 15px;
  height: 15px;
  margin-right: 8px;
  background: currentColor;
  clip-path: polygon(42% 0, 58% 0, 58% 55%, 82% 55%, 50% 88%, 18% 55%, 42% 55%);
}

.download-note {
  max-width: 520px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
}

.hero-facts {
  width: min(960px, 100%);
  flex-wrap: wrap;
  gap: 12px;
  margin: 92px 0 0;
  padding: 0;
}

.hero-facts div {
  min-width: 220px;
  border-left: 3px solid var(--teal);
  background: rgba(255, 255, 255, 0.08);
  padding: 14px 16px;
  backdrop-filter: blur(10px);
}

.hero-facts dt {
  color: #ffffff;
  font-weight: 800;
}

.hero-facts dd {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.section {
  padding: 86px 0;
}

.section-inner {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
}

.two-column,
.tools-layout,
.faq-layout,
.cta-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: start;
}

.intro {
  background: #ffffff;
}

.section h2 {
  margin: 0;
  font-size: 40px;
  line-height: 1.18;
  letter-spacing: 0;
}

.section h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

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

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading p:last-child {
  margin-top: 12px;
}

.compact-heading {
  margin-bottom: 28px;
}

.feature-band {
  background: #edf4ef;
}

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

.feature-card,
.case-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 22px;
  box-shadow: 0 12px 30px rgba(17, 33, 30, 0.06);
}

.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  display: block;
  width: 42px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--teal);
}

.feature-card p,
.case-grid p {
  margin-top: 10px;
}

.feature-card.accent-coral::before {
  background: var(--coral);
}

.feature-card.accent-green::before {
  background: var(--green);
}

.feature-card.accent-gold::before {
  background: var(--gold);
}

.workflow {
  background: #ffffff;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  border-top: 2px solid var(--line);
  padding-top: 18px;
}

.steps span {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--coral);
  font-weight: 800;
}

.steps p {
  margin-top: 10px;
}

.tools {
  background: #13251f;
  color: #ffffff;
}

.tools p {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.76);
}

.tool-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-list li {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 700;
}

.download-section {
  background: #ffffff;
}

.download-layout,
.download-page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: 42px;
  align-items: center;
}

.download-layout p {
  margin-top: 18px;
}

.download-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf7;
  padding: 26px;
  box-shadow: 0 18px 44px rgba(17, 33, 30, 0.1);
}

.download-panel.elevated {
  background: #ffffff;
  box-shadow: var(--shadow);
}

.download-badge {
  display: inline-flex;
  margin-bottom: 16px;
  border-radius: 999px;
  background: rgba(0, 169, 154, 0.12);
  color: #087c72;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 800;
}

.download-panel h2,
.download-panel h3 {
  margin: 0;
}

.download-panel p {
  margin-top: 10px;
}

.download-actions,
.cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 22px;
}

.text-link {
  color: #087c72;
  font-weight: 800;
}

.download-meta {
  color: #74807c;
  font-size: 13px;
}

.use-cases {
  background: #f7f8f4;
}

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

.faq {
  background: #ffffff;
}

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

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin-top: 12px;
}

.cta-band {
  background: var(--teal);
  color: #06211d;
}

.cta-band .section-kicker,
.cta-band p {
  color: #07302a;
}

.cta-layout {
  align-items: center;
}

.cta-actions {
  justify-self: end;
}

.cta-actions {
  margin-top: 0;
}

.site-footer {
  background: #0d1714;
  color: #ffffff;
  padding: 34px 0;
}

.footer-inner {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
  justify-content: space-between;
  gap: 28px;
}

.footer-inner p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.64);
}

.friend-links {
  gap: 12px;
  color: rgba(255, 255, 255, 0.7);
}

.friend-links a {
  color: #ffffff;
  font-weight: 800;
}

.download-page {
  background: #0d1714;
}

.static-header {
  position: relative;
  background: #0d1714;
}

.download-main {
  min-height: calc(100vh - 84px);
  background:
    linear-gradient(135deg, rgba(0, 169, 154, 0.18), transparent 38%),
    linear-gradient(180deg, #0d1714 0%, #f7f8f4 68%);
}

.download-hero {
  padding: 92px 0;
}

.download-hero h1 {
  margin: 0;
  color: #ffffff;
  font-size: 52px;
  line-height: 1.12;
  letter-spacing: 0;
}

.download-hero p {
  max-width: 660px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.download-hero .download-panel p {
  color: var(--muted);
}

@media (max-width: 980px) {
  .site-header {
    padding: 18px 24px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 700px;
  }

  .hero-content,
  .section-inner,
  .footer-inner {
    width: min(100% - 40px, 760px);
  }

  .hero h1 {
    font-size: 46px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .two-column,
  .tools-layout,
  .faq-layout,
  .cta-layout,
  .download-layout,
  .download-page-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section h2 {
    font-size: 34px;
  }

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

  .cta-actions {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: absolute;
    padding: 16px 18px;
  }

  .brand span {
    max-width: 178px;
    white-space: normal;
    line-height: 1.2;
  }

  .nav-action {
    display: none;
  }

  .nav-actions {
    display: none;
  }

  .hero {
    min-height: 720px;
  }

  .hero-media {
    object-position: 70% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(9, 14, 13, 0.95) 0%, rgba(9, 14, 13, 0.82) 52%, rgba(9, 14, 13, 0.34) 100%),
      linear-gradient(180deg, rgba(9, 14, 13, 0.18) 0%, rgba(9, 14, 13, 0.62) 100%);
  }

  .hero-content {
    width: calc(100% - 32px);
    padding-top: 122px;
  }

  .hero h1 {
    font-size: 36px;
  }

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

  .hero-facts {
    margin-top: 54px;
  }

  .hero-facts div {
    width: 100%;
  }

  .section {
    padding: 62px 0;
  }

  .section-inner,
  .footer-inner {
    width: calc(100% - 32px);
  }

  .section h2 {
    font-size: 28px;
  }

  .feature-grid,
  .steps,
  .case-grid,
  .tool-list {
    grid-template-columns: 1fr;
  }

  .download-actions,
  .cta-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .download-actions .button,
  .cta-actions .button,
  .download-actions .text-link {
    width: 100%;
  }

  .download-actions .text-link {
    text-align: center;
  }

  .download-hero h1 {
    font-size: 34px;
  }

  .footer-inner,
  .friend-links {
    align-items: flex-start;
    flex-direction: column;
  }
}