:root {
  --ink: #071b36;
  --copy: #61738c;
  --muted: #8797aa;
  --navy: #0b284d;
  --blue: #167ee8;
  --teal: #0fc5b0;
  --pale: #f5f9fd;
  --line: #dde8f3;
  --white: #fff;
  --shadow: 0 28px 70px rgba(17, 54, 90, 0.11);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { border: 0; }
.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  display: grid;
  grid-template-columns: 250px 1fr 250px;
  align-items: center;
  min-height: 84px;
  border-bottom: 1px solid rgba(221, 232, 243, 0.82);
  padding: 0 max(24px, calc((100% - 1240px) / 2));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}
.brand { display: block; width: 196px; }
.brand img { display: block; width: 100%; height: auto; }
.site-header nav {
  display: flex;
  justify-content: center;
  gap: 42px;
  color: #355779;
  font-size: 14px;
}
.site-header nav a { position: relative; padding: 31px 0; }
.site-header nav a:hover { color: var(--blue); }
.site-header nav a:hover:after {
  position: absolute;
  right: 0;
  bottom: 20px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  content: "";
}
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(480px, 1.03fr) minmax(500px, .97fr);
  align-items: center;
  gap: 46px;
  min-height: 750px;
  overflow: hidden;
  padding: 76px max(24px, calc((100% - 1240px) / 2));
  background:
    radial-gradient(circle at 10% 42%, rgba(30, 211, 187, .12), transparent 30%),
    radial-gradient(circle at 88% 30%, rgba(60, 171, 255, .17), transparent 35%),
    #f9fcff;
}
.hero:before, .hero:after {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, .92);
  border-radius: 50%;
  content: "";
}
.hero:before { top: 80px; right: -170px; width: 500px; height: 500px; }
.hero:after { right: 65px; bottom: 35px; width: 250px; height: 250px; }
.hero-copy { position: relative; z-index: 2; max-width: 710px; }
.hero-eyebrow,
.section-heading > span,
.experience-copy > span,
.about-section span,
.contact-copy > span {
  color: #00a998;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 1px solid rgba(15, 197, 176, .22);
  border-radius: 999px;
  padding: 0 14px;
  background: rgba(255,255,255,.78);
}
.hero h1 {
  margin: 25px 0 20px;
  font-size: clamp(50px, 4.9vw, 70px);
  line-height: 1.18;
  letter-spacing: -.058em;
}
.hero-copy > p {
  max-width: 650px;
  margin: 0 0 34px;
  color: var(--copy);
  font-size: 18px;
  line-height: 1.9;
}
.download-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 58px;
  border: 1px solid transparent;
  border-radius: 15px;
  padding: 0 24px;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.download-button i { font-size: 20px; }
.download-button b { font-size: 15px; }
.android-button {
  color: var(--white);
  background: linear-gradient(105deg, var(--teal), var(--blue));
  box-shadow: 0 14px 30px rgba(22, 126, 232, .2);
}
.android-button.is-ready:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(22,126,232,.27); }
.ios-button { border-color: #d6e4f2; color: #667c96; background: rgba(255,255,255,.9); }
.phone-showcase { position: relative; z-index: 2; height: 610px; }
.phone-card {
  position: absolute;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(200, 221, 243, .86);
  border-radius: 38px;
  background: var(--white);
  box-shadow: 0 34px 80px rgba(13, 57, 97, .17);
}
.phone-card img { display: block; width: 100%; height: 100%; object-fit: cover; }
.phone-card figcaption {
  position: absolute;
  right: 16px;
  bottom: 14px;
  border: 1px solid rgba(208, 226, 243, .95);
  border-radius: 999px;
  padding: 7px 11px;
  color: #426889;
  background: rgba(255, 255, 255, .94);
  font-size: 11px;
}
.phone-card--back { top: 10px; right: 0; width: 326px; height: 580px; transform: rotate(5deg); }
.phone-card--front { bottom: -4px; left: 18px; width: 342px; height: 608px; transform: rotate(-4deg); }
.feature-section { padding: 110px max(24px, calc((100% - 1180px) / 2)); background: var(--white); }
.section-heading { max-width: 720px; margin: auto; text-align: center; }
.section-heading h2,
.experience-copy h2,
.about-section h2,
.contact-copy h2 {
  margin: 14px 0 12px;
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.2;
  letter-spacing: -.045em;
}
.section-heading p,
.experience-copy p,
.about-section p,
.contact-copy > p { margin: 0; color: var(--copy); line-height: 1.85; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 52px; }
.feature-grid article {
  min-height: 226px;
  border: 1px solid var(--line);
  border-radius: 23px;
  padding: 30px;
  background: #fcfdff;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.feature-grid article:hover { border-color: #b9d8f5; transform: translateY(-4px); box-shadow: 0 20px 42px rgba(26, 73, 115, .08); }
.feature-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 15px;
  color: #087edb;
  background: #eaf5ff;
}
.feature-grid article:nth-child(2n) .feature-icon { color: #02a994; background: #e9fcf8; }
.feature-icon i { font-size: 18px; }
.feature-grid h3 { margin: 34px 0 10px; font-size: 20px; }
.feature-grid p { margin: 0; color: var(--copy); line-height: 1.75; }
.experience-section {
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  gap: 70px;
  width: min(1160px, calc(100% - 48px));
  margin: 18px auto 110px;
  border-radius: 32px;
  padding: 64px;
  color: var(--white);
  background: #0a294f;
  box-shadow: 0 30px 70px rgba(7, 27, 54, .16);
}
.experience-copy > span { color: #65ded1; }
.experience-copy h2 { color: var(--white); }
.experience-copy p { color: #bfd0e2; }
.experience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.experience-grid article {
  display: grid;
  min-height: 152px;
  align-content: center;
  gap: 9px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 20px;
  padding: 24px;
  background: rgba(255,255,255,.065);
}
.experience-grid i { color: #63dcd0; font-size: 20px; }
.experience-grid b { font-size: 17px; }
.experience-grid small { color: #b8cbdf; line-height: 1.6; }
.about-section {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto 110px;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 50px 54px;
  background: #f7fbff;
}
.about-section p { max-width: 760px; }
.contact-section {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 72px;
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto 110px;
  padding: 64px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.contact-note {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.contact-note > i {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 15px;
  color: var(--blue);
  background: #eaf5ff;
}
.contact-note span { display: grid; gap: 4px; }
.contact-note small { color: var(--copy); line-height: 1.55; }
.contact-form { display: grid; gap: 17px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.contact-form label { display: grid; gap: 8px; }
.contact-form label > span { color: #294865; font-size: 13px; font-weight: 700; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #d7e4f1;
  border-radius: 13px;
  outline: 0;
  padding: 14px 15px;
  color: var(--ink);
  background: #fbfdff;
  transition: border-color .16s ease, box-shadow .16s ease, background .16s ease;
}
.contact-form textarea { resize: vertical; min-height: 126px; line-height: 1.7; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { border-color: #63a9ee; background: var(--white); box-shadow: 0 0 0 3px rgba(22,126,232,.1); }
.form-honeypot { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-submit-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.form-submit-row small { max-width: 330px; color: var(--muted); line-height: 1.55; }
.form-submit-row button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  gap: 14px;
  border-radius: 13px;
  padding: 0 22px;
  color: var(--white);
  background: var(--navy);
  cursor: pointer;
  font-weight: 700;
}
.form-submit-row button:hover { background: #103962; }
.form-submit-row button:disabled { cursor: wait; opacity: .65; }
.form-status { min-height: 24px; margin: 0; font-size: 13px; }
.form-status.is-pending { color: var(--copy); }
.form-status.is-success { color: #07927f; }
.form-status.is-error { color: #c33a43; }
footer {
  display: flex;
  min-height: 120px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  padding: 24px max(24px, calc((100% - 1180px) / 2));
  color: #6e819d;
  font-size: 13px;
}
.footer-brand { width: 172px; }
footer > a:last-child { color: #176dcc; }
@media (max-width: 1040px) {
  .site-header { grid-template-columns: 210px 1fr; }
  .site-header nav { justify-content: flex-end; gap: 26px; }
  .hero { grid-template-columns: 1fr; padding-top: 60px; }
  .hero-copy { width: 100%; margin: auto; text-align: center; }
  .hero-copy > p { margin-right: auto; margin-left: auto; }
  .download-actions { justify-content: center; }
  .phone-showcase { width: min(570px, 100%); margin: auto; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .experience-section, .contact-section { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .site-header { grid-template-columns: 1fr; min-height: 66px; padding: 0 16px; }
  .site-header nav { display: none; }
  .brand { width: 152px; }
  .hero { gap: 28px; min-height: auto; padding: 50px 16px 58px; }
  .hero h1 { font-size: 37px; line-height: 1.24; letter-spacing: -.045em; }
  .hero-copy > p { font-size: 15px; }
  .download-actions { display: grid; grid-template-columns: 1fr; width: 100%; }
  .download-button { width: 100%; }
  .phone-showcase { height: 510px; margin-top: 24px; margin-bottom: -24px; }
  .phone-card--front { top: 0; bottom: auto; left: 6px; width: 270px; height: 480px; }
  .phone-card--back { top: 56px; right: -10px; width: 258px; height: 460px; }
  .feature-section { padding: 76px 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 190px; }
  .experience-section, .contact-section {
    width: calc(100% - 32px);
    margin-bottom: 72px;
    gap: 38px;
    padding: 38px 24px;
  }
  .experience-grid { grid-template-columns: 1fr; }
  .experience-grid article { min-height: 132px; }
  .about-section { width: calc(100% - 32px); margin-bottom: 72px; padding: 36px 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-submit-row { display: grid; }
  .form-submit-row button { justify-content: center; }
  footer { display: grid; justify-items: center; text-align: center; }
  .footer-brand { width: 160px; }
}