:root {
  --ink: #0a1425;
  --muted: #6d7a8c;
  --soft: #a7b2c0;
  --line: #dce5f0;
  --paper: #f5f8fc;
  --white: #ffffff;
  --blue: #3d6ff2;
  --blue-dark: #244db8;
  --navy: #081426;
  --serif: Georgia, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
:focus-visible {
  outline: 3px solid rgba(61, 111, 242, 0.45);
  outline-offset: 3px;
}
.container {
  width: min(1160px, calc(100% - 64px));
  margin: 0 auto;
}

.site-shell {
  overflow: clip;
  background: var(--paper);
}
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(216, 225, 235, 0.8);
  background: rgba(245, 248, 252, 0.82);
  backdrop-filter: blur(18px);
}
.nav {
  display: flex;
  height: 70px;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.3px;
}
.brand img {
  border-radius: 8px;
  box-shadow: 0 5px 12px rgba(42, 75, 170, 0.16);
}
.brand b {
  font-weight: 760;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  color: #647286;
  font-size: 13px;
}
.nav-links a,
.contact-link {
  transition: color 0.2s;
}
.nav-links a:hover,
.contact-link:hover {
  color: var(--blue);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 15px;
  border: 1px solid #cbd8ee;
  border-radius: 999px;
  color: #2450b7;
  background: #f5f8ff;
  font-size: 12px;
  font-weight: 700;
  transition:
    background 0.2s,
    border-color 0.2s,
    transform 0.2s;
}
.nav-cta:hover {
  border-color: #9eb5e7;
  background: #eaf0ff;
  transform: translateY(-1px);
}

.hero {
  position: relative;
  display: grid;
  min-height: 660px;
  grid-template-columns: minmax(0, 0.84fr) minmax(480px, 1.16fr);
  align-items: center;
  gap: 60px;
  padding-top: 42px;
  padding-bottom: 58px;
}
.hero::before {
  position: absolute;
  top: -130px;
  right: -240px;
  width: 650px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(126, 157, 244, 0.16),
    transparent 68%
  );
  content: "";
  pointer-events: none;
}
.hero-copy {
  position: relative;
  z-index: 2;
  padding: 30px 0 20px;
}
.kicker {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: #5670aa;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 1.3px;
  text-transform: uppercase;
}
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2ca576;
  box-shadow: 0 0 0 4px #e5f5ef;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  max-width: 640px;
  margin-bottom: 24px;
  color: var(--ink);
  font-size: clamp(45px, 5vw, 64px);
  font-weight: 760;
  letter-spacing: -3.8px;
  line-height: 1.02;
}
h1 em,
h2 em {
  color: var(--blue);
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -2px;
}
.hero-lead {
  max-width: 465px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.button {
  display: inline-flex;
  height: 46px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 700;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    background 0.2s,
    border-color 0.2s;
}
.button span {
  font-size: 17px;
  line-height: 1;
}
.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 9px 20px rgba(53, 104, 223, 0.2);
}
.button-primary:hover {
  background: #2d5bc7;
  box-shadow: 0 12px 25px rgba(53, 104, 223, 0.25);
  transform: translateY(-2px);
}
.button-quiet {
  color: #48576c;
  border-color: #d5dee9;
  background: rgba(255, 255, 255, 0.4);
}
.button-quiet:hover {
  border-color: #aebfe4;
  color: var(--blue-dark);
  background: #fff;
  transform: translateY(-1px);
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 21px;
  color: #9ba7b7;
  font-size: 11px;
}
.hero-meta i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #b8c2cf;
}

.hero-visual {
  position: relative;
  min-height: 510px;
  display: grid;
  place-items: center;
}
.glow {
  position: absolute;
  width: 600px;
  height: 470px;
  border-radius: 50%;
  background: radial-gradient(
    ellipse,
    rgba(91, 130, 235, 0.2),
    rgba(96, 131, 225, 0) 70%
  );
  filter: blur(12px);
}
.preview-carousel {
  position: relative;
  width: min(100%, 600px);
  min-width: 0;
}
.preview-slides {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  touch-action: pan-y;
  user-select: none;
  cursor: grab;
}
.preview-slides:active {
  cursor: grabbing;
}
.preview-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.65s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: transform;
}
.preview-slides img {
  display: block;
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  -webkit-user-drag: none;
}
.preview-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 18px;
}
.preview-controls button {
  display: grid;
  width: 24px;
  height: 32px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
}
.preview-controls [data-slide]::after {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #bcc9df;
  content: "";
}
.preview-controls [aria-current="true"]::after {
  width: 20px;
  border-radius: 4px;
  background: var(--blue);
}
@media (prefers-reduced-motion: reduce) {
  .preview-track {
    transition: none;
  }
}

.proof-strip {
  border-top: 1px solid #dfe6ee;
  border-bottom: 1px solid #dfe6ee;
  background: rgba(255, 255, 255, 0.86);
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.proof-grid > div {
  display: flex;
  min-height: 108px;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  padding: 20px 26px;
  border-right: 1px solid #e5eaf0;
}
.proof-grid > div:first-child {
  padding-left: 0;
}
.proof-grid > div:last-child {
  border-right: 0;
}
.proof-grid strong {
  color: #26344a;
  font-size: 15px;
}
.proof-grid span {
  color: #8490a1;
  font-size: 12px;
  line-height: 1.55;
}

.section {
  padding-top: 112px;
  padding-bottom: 112px;
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  align-items: end;
  gap: 80px;
  margin-bottom: 38px;
}
.section-head .kicker {
  margin-bottom: 15px;
}
.section-head h2,
.security-panel h2,
.download-panel h2,
.contact h2 {
  margin-bottom: 0;
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.12;
}
.section-head > p {
  max-width: 400px;
  margin-bottom: 4px;
  padding-left: 24px;
  border-left: 2px solid #d7e3fa;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 13px;
}
.feature-card {
  position: relative;
  min-height: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 6px 18px rgba(42, 65, 104, 0.025);
  transition:
    border-color 0.25s,
    transform 0.25s,
    box-shadow 0.25s;
}
.feature-card:hover {
  border-color: #b7c9eb;
  box-shadow: 0 14px 30px rgba(37, 61, 103, 0.07);
  transform: translateY(-3px);
}
.feature-main {
  background: linear-gradient(145deg, #e8f0ff, #fff 58%);
}
.feature-index {
  position: absolute;
  top: 29px;
  right: 28px;
  color: #a8b5c6;
  font-size: 11px;
  font-weight: 700;
}
.feature-icon {
  display: grid;
  width: 41px;
  height: 41px;
  margin-bottom: 28px;
  place-items: center;
  border-radius: 12px;
  color: var(--blue);
  background: #dce7ff;
  font-size: 21px;
}
.model-icon {
  color: #a0742b;
  background: #f7edd5;
}
.shield-icon {
  color: #238e64;
  background: #e1f4ea;
}
.tray-icon {
  color: #6f7f94;
  background: #e9eef4;
  font-size: 29px;
  line-height: 10px;
}
.feature-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
  letter-spacing: -0.5px;
}
.feature-card p {
  max-width: 340px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.feature-card a {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}
.feature-card a span {
  margin-left: 8px;
  font-size: 15px;
}

.workflow {
  position: relative;
  padding-top: 108px;
  padding-bottom: 113px;
  background: var(--navy);
  color: #fff;
}
.workflow::after {
  position: absolute;
  right: 8%;
  bottom: -220px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(67, 111, 221, 0.2), transparent 68%);
  content: "";
  pointer-events: none;
}
.workflow .section-head h2 {
  color: #fff;
}
.workflow .section-head > p {
  border-left-color: #30425f;
  color: #9cabc1;
}
.workflow .kicker {
  color: #89a6ed;
}
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: start;
  gap: 0;
}
.workflow-step {
  position: relative;
}
.workflow-step:nth-child(1)::after,
.workflow-step:nth-child(3)::after {
  position: absolute;
  top: 17px;
  right: 0;
  left: 34px;
  height: 1px;
  background: #30425f;
  content: "";
}
.workflow-step span {
  display: block;
  width: 34px;
  height: 34px;
  margin-bottom: 25px;
  padding-top: 9px;
  border: 1px solid #2c4164;
  border-radius: 50%;
  color: #8faaf0;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}
.workflow-step h3 {
  margin-bottom: 10px;
  font-size: 19px;
  letter-spacing: -0.4px;
}
.workflow-step p {
  max-width: 220px;
  margin-bottom: 0;
  color: #94a3ba;
  font-size: 13px;
  line-height: 1.7;
}
.workflow-line {
  display: none;
}

.security {
  padding-top: 104px;
  padding-bottom: 104px;
}
.security-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 64px;
  border: 1px solid #d9e2ed;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(41, 62, 98, 0.04);
}
.security-panel h2 {
  margin-bottom: 18px;
}
.security-panel > div:first-child > p:last-child {
  max-width: 450px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}
.security-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 35px;
}
.security-list div {
  display: grid;
  grid-template-columns: 27px 1fr;
  column-gap: 10px;
}
.security-list span {
  display: grid;
  width: 27px;
  height: 27px;
  grid-row: span 2;
  place-items: center;
  border-radius: 50%;
  color: #278e64;
  background: #e7f6ef;
  font-size: 13px;
}
.security-list strong {
  align-self: end;
  font-size: 13px;
}
.security-list small {
  margin-top: 4px;
  color: #8995a6;
  font-size: 11px;
}

.download-section {
  padding-top: 0;
  padding-bottom: 90px;
}
.download-panel {
  display: flex;
  min-height: 244px;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 54px 60px;
  border: 1px solid #d8e3f8;
  border-radius: 16px;
  background: linear-gradient(120deg, #e6efff, #f0f4ff);
}
.download-panel h2 {
  margin-bottom: 15px;
}
.download-panel p {
  max-width: 440px;
  margin-bottom: 0;
  color: #61718a;
  font-size: 14px;
  line-height: 1.7;
}
.download-box {
  display: flex;
  min-width: 220px;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.download-box small {
  color: #72809a;
  font-size: 11px;
}

.contact {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 0;
  padding-bottom: 92px;
}
.contact h2 {
  max-width: 760px;
  margin-bottom: 15px;
  font-size: clamp(36px, 3.2vw, 48px);
  font-weight: 650;
  letter-spacing: -2.4px;
  line-height: 1.14;
}
.contact p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}
.contact-email {
  display: inline-block;
  margin-top: 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}
.contact-label {
  color: var(--muted);
  font-weight: 400;
}
.contact-link {
  display: inline-flex;
  gap: 12px;
  padding-bottom: 5px;
  border-bottom: 1px solid #b5c5dc;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}
.site-footer {
  border-top: 1px solid #dfe6ee;
  background: #fff;
}
.footer-inner {
  display: flex;
  min-height: 90px;
  align-items: center;
  gap: 28px;
  color: #8b97a7;
  font-size: 11px;
}
.footer-brand {
  color: #26344a;
  font-size: 13px;
}
.footer-inner p {
  margin: 0 auto 0 0;
}

@media (max-width: 900px) {
  .container {
    width: min(100% - 40px, 680px);
  }
  .nav-links {
    display: none;
  }
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 60px;
  }
  .hero-copy {
    padding: 0;
  }
  .hero-visual {
    min-height: 400px;
  }
  .proof-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .proof-grid > div:nth-child(2) {
    border-right: 0;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .feature-card {
    align-self: start;
  }
  .feature-main {
    grid-row: auto;
  }
  .workflow-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .workflow-step::after {
    display: none;
  }
  .workflow-line {
    display: block;
    width: 100%;
    height: 1px;
    background: #30425f;
  }
  .security-panel {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px;
  }
  .download-panel {
    align-items: flex-start;
    flex-direction: column;
    padding: 42px;
  }
  .download-box {
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .container {
    width: calc(100% - 32px);
  }
  .nav {
    height: 66px;
  }
  .brand {
    font-size: 14px;
  }
  .nav-cta {
    padding: 9px 10px;
    font-size: 11px;
  }
  h1 {
    font-size: 45px;
    letter-spacing: -2.5px;
  }
  .hero-lead {
    font-size: 14px;
  }
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .hero-actions .button {
    width: 100%;
  }
  .hero-visual {
    min-height: 300px;
  }
  .proof-grid {
    grid-template-columns: 1fr 1fr;
  }
  .proof-grid > div {
    min-height: 100px;
    padding: 16px;
  }
  .proof-grid > div:first-child {
    padding-left: 16px;
  }
  .section {
    padding-top: 80px;
    padding-bottom: 80px;
  }
  .section-head {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }
  .section-head h2,
  .security-panel h2,
  .download-panel h2,
  .contact h2 {
    font-size: 34px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-card {
    padding: 22px;
  }
  .feature-icon {
    margin-bottom: 22px;
  }
  .security-panel {
    padding: 28px 22px;
  }
  .security-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .download-panel {
    padding: 32px 22px;
  }
  .download-box,
  .download-box .button {
    width: 100%;
  }
  .contact {
    align-items: flex-start;
    flex-direction: column;
    gap: 26px;
  }
  .footer-inner {
    min-height: 110px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
  }
  .footer-inner p {
    margin: 0;
  }
}