* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #182026;
  --muted: #63707c;
  --line: #dce4ea;
  --panel: #ffffff;
  --paper: #f6f8f5;
  --mint: #0f9f8f;
  --mint-dark: #08786d;
  --coral: #e56f4f;
  --gold: #d99a28;
  --sky: #4b9edb;
  --brand-cyan: #00bcd4;
  --brand-orange: #ff9500;
  --shadow: 0 18px 48px rgba(24, 32, 38, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 228, 234, 0.78);
  background: rgba(246, 248, 245, 0.9);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  border-radius: 9px;
}

.brand-name {
  color: var(--brand-cyan);
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a:hover,
.footer-links a:hover {
  color: var(--mint-dark);
}

.hero {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  min-height: calc(100vh - 68px);
  padding: 70px 0 44px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--mint-dark);
  font-weight: 800;
  font-size: 14px;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 6vw, 74px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 30px;
  color: #42505b;
  font-size: 19px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 750;
  line-height: 1.2;
}

.button.primary {
  color: #fff;
  background: var(--mint-dark);
  box-shadow: 0 12px 24px rgba(15, 159, 143, 0.22);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.fact-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 640px;
}

.fact {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.fact strong {
  display: block;
  font-size: 22px;
  line-height: 1.1;
}

.fact span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.hero-media {
  position: relative;
  min-height: 610px;
}

.phone-stack {
  position: absolute;
  inset: 0;
}

.phone-shot {
  position: absolute;
  width: min(42vw, 320px);
  border-radius: 32px;
  box-shadow: var(--shadow);
  border: 8px solid #111;
  background: #111;
  overflow: hidden;
}

.phone-shot.primary-shot {
  right: 8%;
  top: 0;
  z-index: 3;
}

.phone-shot.secondary-shot {
  left: 6%;
  top: 88px;
  z-index: 2;
  transform: scale(0.86);
}


.section {
  padding: 86px 0;
}

.section.alt {
  background: #fff;
}

.section-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

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

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: 0;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

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

.feature {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: #fff;
  font-weight: 900;
  background: var(--mint);
}

.feature:nth-child(2) .feature-icon {
  background: var(--coral);
}

.feature:nth-child(3) .feature-icon {
  background: var(--gold);
}

.feature h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

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

.showcase {
  display: grid;
  gap: 86px;
}

.showcase-item {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: center;
}

.showcase-item.reverse {
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
}

.showcase-item.reverse .showcase-media {
  order: 2;
}

.showcase-media {
  display: flex;
  justify-content: center;
}

.device-frame {
  width: min(100%, 330px);
  border-radius: 34px;
  border: 8px solid #111;
  overflow: hidden;
  background: #111;
  box-shadow: var(--shadow);
}

.showcase-copy h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

.showcase-copy p {
  color: var(--muted);
  font-size: 17px;
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: #34424d;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 14px;
  height: 8px;
  border-left: 3px solid var(--mint-dark);
  border-bottom: 3px solid var(--mint-dark);
  transform: rotate(-45deg);
}


.site-footer {
  border-top: 1px solid var(--line);
  background: #17211f;
  color: rgba(255, 255, 255, 0.86);
}

.footer-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.copyright {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.legal-body {
  background: #f7f8f6;
}

.doc-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.doc-nav {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.back-link {
  color: var(--mint-dark);
  font-weight: 750;
}

.doc-main {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 54px 0 80px;
}

.doc-title {
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.doc-title h1 {
  margin-bottom: 8px;
  font-size: clamp(32px, 5vw, 52px);
}

.doc-title p {
  margin-bottom: 0;
  color: var(--muted);
}

.doc-content {
  display: grid;
  gap: 18px;
  font-size: 16px;
}

.doc-section {
  padding-top: 4px;
}

.doc-section h2 {
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: 0;
}

.doc-section p,
.doc-content > p {
  margin-bottom: 10px;
  color: #34424d;
}

.doc-signature {
  margin-top: 8px;
  color: #34424d;
}

.doc-signature p {
  margin: 0;
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 46px;
  }

  .hero-media {
    min-height: 560px;
  }

  .phone-shot {
    width: min(58vw, 300px);
  }

  .feature-grid,
  .showcase-item,
  .showcase-item.reverse {
    grid-template-columns: 1fr;
  }

  .showcase-item.reverse .showcase-media {
    order: 0;
  }
}

@media (max-width: 640px) {
  .nav,
  .doc-nav,
  .footer-inner {
    width: min(100% - 28px, 1120px);
  }

  .nav {
    min-height: 62px;
  }

  .nav-links {
    gap: 12px;
    font-size: 13px;
  }

  .nav-links a:nth-child(2) {
    display: none;
  }

  .hero,
  .section-inner,
  .doc-main {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    padding: 36px 0 34px;
    gap: 32px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .fact-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero-media {
    min-height: 480px;
  }

  .phone-shot {
    border-width: 6px;
    border-radius: 26px;
  }

  .phone-shot.primary-shot {
    right: 0;
  }

  .phone-shot.secondary-shot {
    left: 0;
    top: 72px;
  }


  .section {
    padding: 60px 0;
  }

  .showcase {
    gap: 58px;
  }

  .showcase-item {
    gap: 26px;
  }

  .feature {
    padding: 20px;
  }


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