:root {
  --ink: #111827;
  --muted: #5f6b7a;
  --soft: #f5f8fc;
  --line: #dde5ef;
  --blue: #0b5fff;
  --blue-dark: #073fab;
  --cyan: #00a9a5;
  --green: #12b981;
  --amber: #ffb020;
  --white: #ffffff;
  --shadow: 0 24px 60px rgba(16, 24, 40, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

button,
input,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 42px;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(221, 229, 239, 0.72);
  backdrop-filter: blur(16px);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 178px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: var(--radius);
  box-shadow: 0 10px 24px rgba(11, 95, 255, 0.22);
}

.brand-mark svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

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

.brand strong {
  font-size: 20px;
  line-height: 1.1;
}

.brand em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #344054;
  font-size: 15px;
}

.nav a {
  padding: 24px 0;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--blue);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.section-band,
.section,
.split-band,
.contact-band {
  padding-right: 42px;
  padding-left: 42px;
}

.hero {
  overflow: hidden;
  padding-top: 86px;
  padding-bottom: 70px;
  background:
    linear-gradient(180deg, #eef5ff 0%, rgba(238, 245, 255, 0) 76%),
    radial-gradient(circle at 84% 12%, rgba(0, 169, 165, 0.16), transparent 34%),
    var(--white);
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  gap: 52px;
  width: min(1200px, 100%);
  margin: 0 auto;
  align-items: center;
}

.hero-copy,
.workspace-main {
  min-width: 0;
}

.hero-copy h1,
.hero-copy p,
.query-card span,
.answer-card p,
.doc-grid strong,
.doc-grid em,
.feature-card p,
.workflow-list p,
.scenario-grid p,
.metric-stack strong {
  overflow-wrap: anywhere;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

.hero h1,
.section-heading h2,
.split-copy h2,
.contact-copy h2 {
  margin: 0;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.12;
}

.hero h1 {
  max-width: 610px;
  margin-top: 18px;
  font-size: 54px;
}

.lead {
  max-width: 590px;
  margin: 24px 0 0;
  color: #3e4c5f;
  font-size: 18px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn.primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 16px 28px rgba(11, 95, 255, 0.24);
}

.btn.primary:hover,
.btn.primary:focus-visible {
  background: var(--blue-dark);
}

.btn.secondary {
  color: #1d2b3a;
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--line);
}

.btn.wide {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 590px;
  margin: 34px 0 0;
}

.hero-stats div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(221, 229, 239, 0.9);
  border-radius: var(--radius);
}

.hero-stats dt {
  font-size: 22px;
  font-weight: 800;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.product-visual {
  min-width: 0;
}

.browser-frame {
  overflow: hidden;
  min-height: 610px;
  background: #f8fbff;
  border: 1px solid rgba(188, 202, 222, 0.9);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  gap: 8px;
  height: 42px;
  padding: 15px 18px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c8d3df;
}

.window-bar span:nth-child(2) {
  background: var(--amber);
}

.window-bar span:nth-child(3) {
  background: var(--green);
}

.workspace {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  min-height: 568px;
}

.workspace-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 14px;
  background: #0f2542;
  color: rgba(255, 255, 255, 0.74);
}

.workspace-side strong {
  margin-bottom: 16px;
  color: var(--white);
  font-size: 19px;
}

.workspace-side button {
  height: 38px;
  padding: 0 12px;
  color: inherit;
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 6px;
}

.workspace-side button.active,
.workspace-side button:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.workspace-main {
  padding: 28px;
}

.query-card,
.answer-card,
.doc-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.query-card {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 14px 16px;
  box-shadow: 0 12px 30px rgba(11, 95, 255, 0.08);
}

.query-card span {
  color: #253245;
  font-weight: 700;
}

.query-card button {
  flex: 0 0 auto;
  height: 38px;
  padding: 0 14px;
  color: var(--white);
  background: var(--blue);
  border: 0;
  border-radius: 6px;
}

.answer-card {
  margin-top: 18px;
  padding: 20px;
}

.answer-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.answer-title strong {
  font-size: 20px;
}

.answer-title span {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

.answer-card p {
  margin: 14px 0 0;
  color: #445368;
  line-height: 1.72;
}

.progress-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.progress-list span {
  position: relative;
  overflow: hidden;
  min-height: 38px;
  padding: 9px 12px;
  color: #243144;
  border-radius: 6px;
  background: #eef3f9;
  font-size: 14px;
  font-weight: 700;
}

.progress-list span::before {
  position: absolute;
  inset: auto auto 0 0;
  width: var(--score);
  height: 4px;
  content: "";
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.doc-grid article {
  min-height: 142px;
  padding: 16px;
}

.doc-grid small,
.metric-stack small {
  color: var(--blue);
  font-weight: 800;
}

.doc-grid strong,
.doc-grid em {
  display: block;
}

.doc-grid strong {
  margin-top: 10px;
  font-size: 16px;
  line-height: 1.35;
}

.doc-grid em {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  line-height: 1.5;
}

.section {
  padding-top: 92px;
  padding-bottom: 92px;
}

.section-heading {
  width: min(760px, 100%);
  margin: 0 auto 40px;
  text-align: center;
}

.section-heading.compact {
  margin-bottom: 34px;
}

.section-heading h2,
.split-copy h2,
.contact-copy h2 {
  margin-top: 14px;
  font-size: 38px;
}

.section-heading p,
.split-copy p,
.contact-copy p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.76;
}

.feature-grid,
.scenario-grid {
  display: grid;
  width: min(1160px, 100%);
  margin: 0 auto;
  gap: 18px;
}

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

.feature-card,
.scenario-grid article,
.metric-stack article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feature-card {
  min-height: 238px;
  padding: 26px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(11, 95, 255, 0.26);
  box-shadow: 0 18px 42px rgba(16, 24, 40, 0.1);
}

.feature-icon {
  position: relative;
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  place-items: center;
  color: var(--blue);
  background: #edf4ff;
  border-radius: var(--radius);
}

.feature-icon::before,
.feature-icon::after {
  position: absolute;
  content: "";
}

.search-icon::before {
  width: 15px;
  height: 15px;
  border: 3px solid currentColor;
  border-radius: 50%;
}

.search-icon::after {
  width: 12px;
  height: 3px;
  background: currentColor;
  transform: translate(11px, 11px) rotate(45deg);
}

.doc-icon::before {
  width: 20px;
  height: 24px;
  border: 3px solid currentColor;
  border-radius: 4px;
}

.doc-icon::after {
  width: 14px;
  height: 3px;
  background: currentColor;
  box-shadow: 0 7px 0 currentColor;
}

.target-icon::before {
  width: 24px;
  height: 24px;
  border: 3px solid currentColor;
  border-radius: 50%;
}

.target-icon::after {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
}

.company-icon::before {
  width: 22px;
  height: 22px;
  border: 3px solid currentColor;
  border-radius: 4px;
}

.company-icon::after {
  width: 3px;
  height: 18px;
  background: currentColor;
  box-shadow: 7px 0 0 currentColor, 14px 0 0 currentColor;
}

.radar-icon::before {
  width: 25px;
  height: 25px;
  border: 2px solid currentColor;
  border-radius: 50%;
  box-shadow: inset 0 0 0 7px #edf4ff, inset 0 0 0 9px currentColor;
}

.radar-icon::after {
  width: 16px;
  height: 3px;
  background: currentColor;
  transform-origin: left center;
  transform: translate(2px, -2px) rotate(-28deg);
}

.workflow-icon::before {
  width: 26px;
  height: 3px;
  background: currentColor;
  box-shadow: 0 9px 0 currentColor, 0 18px 0 currentColor;
}

.workflow-icon::after {
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 50%;
  box-shadow: 18px 9px 0 currentColor, 8px 18px 0 currentColor;
}

.feature-card h3,
.scenario-grid h3,
.workflow-list h3 {
  margin: 0;
  font-size: 21px;
}

.feature-card p,
.scenario-grid p,
.workflow-list p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.72;
}

.split-band {
  display: grid;
  grid-template-columns: minmax(280px, 430px) minmax(0, 650px);
  gap: 64px;
  align-items: start;
  justify-content: center;
  padding-top: 86px;
  padding-bottom: 86px;
  background: #f4f8fc;
}

.workflow-list {
  display: grid;
  gap: 14px;
}

.workflow-list article {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  min-height: 128px;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.workflow-list span {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  color: var(--white);
  background: #102a4c;
  border-radius: var(--radius);
  font-weight: 800;
}

.intelligence {
  background: var(--white);
}

.insight-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 22px;
  width: min(1120px, 100%);
  margin: 0 auto;
}

.insight-panel {
  min-height: 480px;
  padding: 24px;
  background: linear-gradient(135deg, #102a4c, #0a4d68);
  border-radius: 12px;
  color: var(--white);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.panel-head strong {
  font-size: 22px;
}

.panel-head span {
  color: rgba(255, 255, 255, 0.72);
}

.radar-chart {
  position: relative;
  width: min(370px, 100%);
  aspect-ratio: 1;
  margin: 36px auto 28px;
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 49.6%, rgba(255, 255, 255, 0.2) 49.6%, rgba(255, 255, 255, 0.2) 50.4%, transparent 50.4%),
    linear-gradient(0deg, transparent 49.6%, rgba(255, 255, 255, 0.2) 49.6%, rgba(255, 255, 255, 0.2) 50.4%, transparent 50.4%);
}

.radar-chart .ring {
  position: absolute;
  inset: 0;
  margin: auto;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
}

.ring-one {
  width: 32%;
  height: 32%;
}

.ring-two {
  width: 64%;
  height: 64%;
}

.ring-three {
  width: 96%;
  height: 96%;
}

.radar-chart i {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 14px;
  height: 14px;
  background: var(--c);
  border: 3px solid var(--white);
  border-radius: 50%;
  box-shadow: 0 0 0 8px color-mix(in srgb, var(--c), transparent 74%);
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.signal-list span {
  min-height: 44px;
  padding: 12px;
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.metric-stack {
  display: grid;
  gap: 16px;
}

.metric-stack article {
  min-height: 149px;
  padding: 24px;
}

.metric-stack strong {
  display: block;
  margin-top: 12px;
  font-size: 22px;
  line-height: 1.45;
}

.scenarios {
  background: #f7fafc;
}

.scenario-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.scenario-grid article {
  min-height: 190px;
  padding: 24px;
}

.contact-band {
  display: grid;
  grid-template-columns: minmax(280px, 520px) minmax(320px, 420px);
  gap: 68px;
  justify-content: center;
  align-items: center;
  padding-top: 78px;
  padding-bottom: 78px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(10, 38, 71, 0.94), rgba(11, 95, 255, 0.88)),
    #0b5fff;
}

.contact-copy h2,
.contact-copy p,
.contact-copy .eyebrow {
  color: var(--white);
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-form {
  padding: 24px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

.contact-form label {
  display: block;
  margin-bottom: 14px;
}

.contact-form span {
  display: block;
  margin-bottom: 8px;
  color: #344054;
  font-size: 14px;
  font-weight: 700;
}

.contact-form input,
.contact-form select {
  width: 100%;
  height: 46px;
  padding: 0 12px;
  color: var(--ink);
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(11, 95, 255, 0.12);
}

.form-note {
  min-height: 22px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.form-note.is-success {
  color: var(--green);
  font-weight: 700;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 42px;
  color: #475467;
  background: #f7fafc;
  border-top: 1px solid var(--line);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--ink);
  font-size: 18px;
}

.site-footer span {
  margin-top: 4px;
  font-size: 13px;
}

.site-footer p {
  margin: 10px 0 0;
  color: #667085;
  font-size: 13px;
}

.beian-link {
  display: inline-block;
  margin-top: 8px;
  color: #475467;
  font-size: 13px;
}

.beian-link:hover,
.beian-link:focus-visible {
  color: var(--blue);
}

.site-footer nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
}

@media (max-width: 1060px) {
  .hero-shell,
  .split-band,
  .insight-layout,
  .contact-band {
    grid-template-columns: 1fr;
  }

  .hero-shell {
    gap: 38px;
  }

  .product-visual {
    width: min(780px, 100%);
    margin: 0 auto;
  }

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

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

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

  .metric-stack article {
    min-height: 170px;
  }
}

@media (max-width: 820px) {
  .site-header {
    min-height: 66px;
    padding: 0 18px;
  }

  .menu-button {
    display: block;
  }

  .nav {
    position: absolute;
    top: 66px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 20px 50px rgba(16, 24, 40, 0.16);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 13px 12px;
    border-radius: 6px;
  }

  .nav a:hover,
  .nav a:focus-visible {
    background: #f3f7fc;
  }

  .section-band,
  .section,
  .split-band,
  .contact-band {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero {
    padding-top: 56px;
    padding-bottom: 48px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 16px;
  }

  .hero-stats,
  .doc-grid,
  .feature-grid,
  .scenario-grid,
  .metric-stack,
  .signal-list {
    grid-template-columns: 1fr;
  }

  .browser-frame {
    min-height: auto;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .workspace-side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 16px;
  }

  .workspace-side strong {
    grid-column: 1 / -1;
    margin-bottom: 6px;
  }

  .workspace-main {
    padding: 18px;
  }

  .query-card {
    align-items: stretch;
    flex-direction: column;
  }

  .query-card button {
    width: 100%;
  }

  .section,
  .split-band,
  .contact-band {
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .section-heading h2,
  .split-copy h2,
  .contact-copy h2 {
    font-size: 30px;
  }

  .section-heading {
    text-align: left;
  }

  .workflow-list article {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 18px;
  }

  .workflow-list span {
    width: 44px;
    height: 44px;
  }

  .site-footer {
    display: block;
    padding: 26px 18px;
  }

  .site-footer nav {
    flex-wrap: wrap;
    margin-top: 18px;
  }
}

@media (max-width: 460px) {
  .brand em {
    display: none;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .workspace-side {
    grid-template-columns: 1fr;
  }

  .answer-title,
  .panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .radar-chart {
    margin-top: 24px;
  }
}