:root {
  --blue: #246bff;
  --blue-dark: #0f4ed8;
  --blue-soft: #eaf2ff;
  --navy: #081a3a;
  --text: #111b3d;
  --muted: #6a7690;
  --line: #e6ecf7;
  --bg: #f4f8ff;
  --card: #ffffff;
  --orange: #ffad2b;
  --green: #35c88a;
  --purple: #7957ff;
  --shadow: 0 18px 50px rgba(17, 38, 76, .08);
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background:
    radial-gradient(circle at 12% 10%, rgba(63, 123, 255, .11), transparent 34%),
    linear-gradient(180deg, #f7fbff 0%, #f2f7ff 48%, #ffffff 100%);
  color: var(--text);
  line-height: 1.65;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; }

.container {
  width: min(1220px, calc(100% - 48px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: 68px;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(230,236,247,.9);
}

.nav {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 22px;
  color: var(--navy);
  white-space: nowrap;
}

.logo-symbol {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.logo-symbol svg {
  width: 34px;
  height: 34px;
  fill: var(--blue);
}

.menu {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
  color: #25345a;
  font-weight: 650;
}

.menu a:hover { color: var(--blue); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 38px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 14px;
  border: 1px solid transparent;
  transition: .18s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #1e6cff, #0f55ed);
  color: white;
  box-shadow: 0 10px 26px rgba(36,107,255,.24);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0f55ed, #0a43c2);
  transform: translateY(-1px);
}

.btn-ghost {
  background: #fff;
  color: #25345a;
  border-color: #cfd9ef;
}

.btn-outline {
  background: rgba(255,255,255,.82);
  color: var(--blue);
  border-color: #cbdcff;
}

.btn-outline:hover, .btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}

.btn-large {
  min-width: 138px;
  height: 46px;
  border-radius: 8px;
  font-size: 15px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 18px;
}

.hero:before {
  content: "";
  position: absolute;
  top: -120px;
  left: 0;
  right: 0;
  height: 520px;
  background: linear-gradient(90deg, rgba(36,107,255,.08), rgba(36,107,255,.02) 40%, rgba(36,107,255,.12));
  pointer-events: none;
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: 465px 1fr;
  align-items: center;
  gap: 32px;
  padding-top: 20px;
}

.breadcrumb {
  color: #60708f;
  font-size: 14px;
  margin-bottom: 48px;
}

.hero-copy h1 {
  margin: 0;
  font-size: 46px;
  line-height: 1.16;
  letter-spacing: -1.5px;
  color: #0b1740;
}

.hero-subtitle {
  margin: 18px 0 28px;
  color: #5c6a86;
  font-weight: 650;
  max-width: 530px;
  font-size: 17px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.dashboard-preview {
  position: relative;
  min-height: 395px;
  display: grid;
  grid-template-columns: 104px 1fr;
  border-radius: 14px;
  box-shadow: 0 24px 70px rgba(21, 55, 117, .14);
  border: 1px solid rgba(225,233,248,.85);
  overflow: hidden;
  background: #f7faff;
  transform: perspective(1000px) rotateX(0deg) rotateY(-1.5deg);
}

.dash-sidebar {
  background: linear-gradient(180deg, #051b3d, #082855);
  color: rgba(255,255,255,.76);
  padding: 16px 12px;
}

.dash-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  font-weight: 900;
  font-size: 13px;
  margin-bottom: 16px;
}

.dash-logo span {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  background: var(--blue);
}

.dash-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.dash-sidebar li {
  font-size: 11px;
  padding: 8px 8px;
  border-radius: 7px;
  margin-bottom: 3px;
}

.dash-sidebar li.active {
  background: rgba(255,255,255,.13);
  color: #fff;
}

.dash-main {
  padding: 16px;
}

.dash-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
  margin-bottom: 12px;
}

.dash-select, .dash-date {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 12px;
  color: #53617c;
  font-size: 12px;
  box-shadow: 0 6px 14px rgba(20,40,80,.04);
}

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

.metric-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 14px 10px;
  min-height: 84px;
}

.metric-card span {
  display: block;
  color: #77849b;
  font-size: 12px;
  font-weight: 700;
}

.metric-card strong {
  display: block;
  color: #16203d;
  font-size: 21px;
  line-height: 1.1;
  margin-top: 8px;
  letter-spacing: .2px;
}

.metric-card small {
  color: #97a3b8;
  font-size: 11px;
}

.chart-row {
  display: grid;
  grid-template-columns: 1.12fr .82fr .82fr;
  gap: 10px;
  margin-top: 10px;
}

.chart-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 212px;
  padding: 14px;
}

.chart-title {
  color: #182344;
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 12px;
}

.line-chart svg {
  width: 100%;
  height: 154px;
}

.gridline {
  stroke: #ecf1fa;
  stroke-width: 1;
  fill: none;
}

.line {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
}

.blue { stroke: #2f6bff; }
.orange { stroke: #ffad2b; }
.area { fill: url(#area); }

.donut-wrap {
  position: relative;
  width: 145px;
  height: 145px;
  margin: 4px auto 10px;
}

.donut {
  width: 145px;
  height: 145px;
  border-radius: 50%;
  background: conic-gradient(var(--blue) 0 42%, var(--orange) 42% 64%, var(--green) 64% 82%, var(--purple) 82% 100%);
  position: relative;
}

.donut:after {
  content: "";
  position: absolute;
  inset: 20px;
  background: #fff;
  border-radius: 50%;
}

.donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.donut-center strong {
  font-size: 18px;
}

.donut-center span {
  font-size: 11px;
  color: #7b879b;
}

.legend {
  display: grid;
  gap: 6px;
  font-size: 11px;
  color: #66748c;
}

.legend i {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.c1 { background: var(--blue); }
.c2 { background: var(--orange); }
.c3 { background: var(--green); }

.bar-list {
  display: grid;
  gap: 18px;
  padding-top: 8px;
}

.bar-list div {
  display: grid;
  grid-template-columns: 72px 1fr 36px;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: #66748c;
}

.bar-list b {
  display: block;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, #3674ff, #7ba7ff);
}

.bar-list em {
  font-style: normal;
  color: #54627c;
  text-align: right;
}

.feature-strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
  padding-top: 28px;
}

.feature-box {
  background: rgba(255,255,255,.9);
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 126px;
  padding: 22px 16px;
  text-align: center;
  box-shadow: 0 14px 34px rgba(25, 62, 126, .07);
}

.icon {
  display: inline-block;
  width: 38px;
  height: 38px;
  border-radius: 13px;
  background: linear-gradient(135deg, #2f6bff, #73a4ff);
  position: relative;
  box-shadow: 0 10px 20px rgba(36,107,255,.22);
}

.icon:before, .icon:after {
  content: "";
  position: absolute;
  background: #fff;
}

.icon.users:before { width: 18px; height: 8px; border-radius: 9px 9px 2px 2px; left: 10px; top: 20px; }
.icon.users:after { width: 10px; height: 10px; border-radius: 50%; left: 14px; top: 9px; }

.icon.nodes:before { width: 18px; height: 4px; left: 10px; top: 12px; box-shadow: 0 10px 0 #fff; }
.icon.nodes:after { width: 4px; height: 18px; left: 17px; top: 12px; }

.icon.clock:before { width: 18px; height: 18px; border: 3px solid #fff; border-radius: 50%; background: transparent; left: 8px; top: 8px; }
.icon.clock:after { width: 9px; height: 3px; left: 18px; top: 18px; transform: rotate(25deg); }

.icon.layers:before { width: 20px; height: 12px; left: 9px; top: 10px; transform: skewY(-18deg); }
.icon.layers:after { width: 20px; height: 12px; left: 9px; top: 18px; transform: skewY(-18deg); opacity: .75; }

.icon.shield:before { width: 18px; height: 22px; left: 10px; top: 8px; clip-path: polygon(50% 0, 100% 18%, 88% 75%, 50% 100%, 12% 75%, 0 18%); }
.icon.target:before { width: 22px; height: 22px; border: 4px solid #fff; border-radius: 50%; background: transparent; left: 8px; top: 8px; }
.icon.target:after { width: 8px; height: 8px; border-radius: 50%; left: 15px; top: 15px; }

.feature-box h3 {
  margin: 12px 0 6px;
  font-size: 17px;
  color: #14203f;
}

.feature-box p {
  margin: 0;
  color: #7b879c;
  font-size: 13px;
  font-weight: 600;
}

.section {
  padding: 58px 0;
}

.section-title {
  text-align: center;
  margin: 0 auto 32px;
  max-width: 740px;
}

.section-title h2 {
  font-size: 30px;
  line-height: 1.24;
  margin: 0 0 10px;
  color: #101c3e;
  letter-spacing: -.7px;
}

.section-title p {
  margin: 0;
  color: #6a7690;
  font-weight: 600;
}

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

.analysis-card {
  min-height: 198px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 12px 30px rgba(21,55,117,.05);
  overflow: hidden;
}

.analysis-card h3 {
  margin: 0 0 6px;
  color: #172342;
  font-size: 17px;
}

.analysis-card p {
  margin: 0 0 14px;
  color: #687790;
  font-size: 13px;
  font-weight: 600;
}

.flow-visual {
  height: 96px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.flow-visual span {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: linear-gradient(135deg, #eef4ff, #dce9ff);
  border: 1px solid #cddcff;
}

.flow-visual b {
  position: absolute;
  top: 47px;
  width: 52px;
  height: 2px;
  background: #8db3ff;
}

.flow-visual b:nth-of-type(1) { left: 54px; }
.flow-visual b:nth-of-type(2) { left: 126px; }
.flow-visual b:nth-of-type(3) { left: 198px; }

.heatmap {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
  height: 100px;
  align-content: end;
}

.heatmap i {
  display: block;
  height: 28px;
  border-radius: 4px;
  background: #dce8ff;
}

.heatmap i:nth-child(2n) { height: 52px; background: #8db3ff; }
.heatmap i:nth-child(3n) { height: 78px; background: #3674ff; }
.heatmap i:nth-child(5n) { height: 40px; background: #bcd2ff; }

.funnel {
  display: grid;
  gap: 8px;
  justify-items: center;
  padding-top: 4px;
}

.funnel span {
  display: block;
  height: 18px;
  border-radius: 4px;
  background: linear-gradient(90deg, #2f6bff, #8bb4ff);
}

.funnel span:nth-child(1) { width: 88%; }
.funnel span:nth-child(2) { width: 68%; }
.funnel span:nth-child(3) { width: 48%; }
.funnel span:nth-child(4) { width: 28%; opacity: .45; }

.mini-chart svg {
  width: 100%;
  height: 104px;
}

.mini-chart polyline {
  fill: none;
  stroke: var(--orange);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mini-chart .second {
  stroke: var(--blue);
  stroke-width: 3;
}

.list-visual {
  display: grid;
  gap: 11px;
  padding-top: 4px;
}

.list-visual span {
  display: block;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, #eaf1ff, #d6e4ff);
}

.list-visual span:nth-child(2) { width: 82%; }
.list-visual span:nth-child(3) { width: 66%; }
.list-visual span:nth-child(4) { width: 74%; }

.small-donut {
  width: 112px;
  height: 112px;
  margin: 2px auto;
}

.small-donut:after { inset: 18px; }

.value-section {
  background: linear-gradient(180deg, #ffffff, #f6f9ff);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.value-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 16px;
  box-shadow: 0 10px 26px rgba(21,55,117,.04);
}

.value-card span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  background: #eaf2ff;
  color: var(--blue);
  border-radius: 10px;
  margin-bottom: 10px;
}

.value-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.value-card p {
  margin: 0;
  color: #6d7b94;
  font-size: 13px;
  font-weight: 600;
}

.pricing-section {
  padding: 30px 0;
}

.pricing-banner {
  background: linear-gradient(90deg, #e9f2ff, #f5f9ff);
  border: 1px solid #d9e7ff;
  border-radius: 12px;
  padding: 28px 36px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  box-shadow: 0 14px 34px rgba(36,107,255,.08);
}

.pricing-banner h2 {
  margin: 0 0 6px;
  font-size: 25px;
}

.pricing-banner p {
  margin: 0;
  color: #60708f;
  font-weight: 600;
}

.banner-points {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.banner-actions {
  display: flex;
  gap: 18px;
}

.doc-section {
  background: #fff;
}

.doc-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 42px;
  align-items: start;
}

.doc-grid h2 {
  margin: 0 0 10px;
  font-size: 30px;
}

.doc-grid p {
  color: #6a7690;
  font-weight: 600;
}

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

.doc-list div {
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.doc-list b {
  color: var(--blue);
}

.doc-list span {
  color: #27365b;
  font-weight: 700;
}

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

.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(21,55,117,.05);
}

.case-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.case-card p {
  margin: 0;
  color: #6a7690;
  font-weight: 600;
}

.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

details {
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 17px 20px;
}

summary {
  cursor: pointer;
  font-weight: 900;
  color: #14203f;
}

details p {
  color: #6a7690;
  margin-bottom: 0;
}

.compliance-section {
  padding-top: 30px;
}

.compliance-card {
  background: linear-gradient(135deg, #0e2452, #174bba);
  color: #fff;
  border-radius: 16px;
  padding: 32px 38px;
  box-shadow: 0 22px 54px rgba(23,75,186,.22);
}

.compliance-card h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.compliance-card p {
  color: rgba(255,255,255,.82);
  margin: 8px 0;
}

.contact-section {
  padding-top: 30px;
}

.contact-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 34px 38px;
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 36px;
  align-items: center;
  box-shadow: var(--shadow);
}

.contact-panel h2 {
  margin: 0 0 8px;
  font-size: 29px;
}

.contact-panel p {
  color: #60708f;
  font-weight: 600;
}

.contact-meta {
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
}

.contact-meta p {
  margin: 8px 0;
}

.footer {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 38px 0 24px;
}

.footer-main {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 70px;
}

.footer-brand p {
  color: #6a7690;
  font-size: 14px;
  font-weight: 600;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.footer-cols h4 {
  margin: 0 0 12px;
  color: #182344;
}

.footer-cols a,
.footer-cols button {
  display: block;
  margin: 7px 0;
  color: #6a7690;
  font-size: 14px;
  font-weight: 600;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-align: left;
}

.footer-cols a:hover,
.footer-cols button:hover {
  color: var(--blue);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 30px;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  color: #8894aa;
  font-size: 13px;
}

.float-service {
  position: fixed;
  right: 28px;
  bottom: 30px;
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1d9bf0, #246bff);
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  box-shadow: 0 18px 42px rgba(36,107,255,.35);
  animation: floatService 2.8s ease-in-out infinite;
}

.float-plane {
  width: 25px;
  height: 25px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,.22);
}

@keyframes floatService {
  0%, 100% { transform: translateY(0); box-shadow: 0 18px 42px rgba(36,107,255,.31); }
  50% { transform: translateY(-4px); box-shadow: 0 24px 56px rgba(36,107,255,.46); }
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
}

.modal.active { display: block; }

.modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(8, 20, 45, .62);
}

.modal-panel {
  position: relative;
  width: min(620px, calc(100% - 36px));
  margin: 11vh auto 0;
  background: #fff;
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 28px 70px rgba(8,20,45,.26);
}

.modal-panel h2 {
  margin-top: 0;
}

.modal-panel p {
  color: #66748c;
  font-weight: 600;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: #f1f5ff;
  color: #172342;
  font-size: 22px;
  cursor: pointer;
}

@media (max-width: 1120px) {
  .menu { display: none; }
  .hero-layout { grid-template-columns: 1fr; }
  .dashboard-preview { transform: none; }
  .feature-strip { grid-template-columns: repeat(3, 1fr); }
  .value-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-banner { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 860px) {
  .analysis-grid, .case-grid { grid-template-columns: 1fr; }
  .doc-grid, .contact-panel { grid-template-columns: 1fr; }
  .chart-row { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-preview { grid-template-columns: 1fr; }
  .dash-sidebar { display: none; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1220px); }
  .header, .nav { height: 62px; }
  .logo { font-size: 19px; }
  .nav-actions .btn-ghost { display: none; }
  .btn-primary { padding-inline: 14px; }
  .hero-copy h1 { font-size: 36px; }
  .breadcrumb { margin-bottom: 26px; }
  .feature-strip { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .hero-buttons { gap: 10px; }
  .btn-large { min-width: auto; width: 100%; }
  .metric-grid { grid-template-columns: 1fr; }
  .dashboard-preview { min-height: auto; }
  .dash-main { padding: 12px; }
  .dash-topbar { flex-direction: column; height: auto; align-items: stretch; gap: 8px; }
  .pricing-banner, .contact-panel, .compliance-card { padding: 24px; }
  .banner-actions { flex-direction: column; }
  .float-service { right: 16px; bottom: 18px; height: 44px; padding: 0 16px; }
}