:root {
  --ink: #13233a;
  --ink-2: #35465b;
  --muted: #6d7b8c;
  --line: #e5eaf0;
  --soft: #f5f8fb;
  --white: #ffffff;
  --navy: #0d2a47;
  --blue: #1f69ff;
  --cyan: #3fb8d9;
  --gold: #c99a45;
  --green: #2e8b78;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(20, 42, 72, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

button,
input,
select {
  font: inherit;
}

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

.container {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(225, 231, 238, 0.72);
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 220px;
}

.brand-logo {
  width: 150px;
  height: auto;
  object-fit: contain;
}

.brand-name {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--ink);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  position: relative;
  color: #3f4d5d;
  transition: 0.25s ease;
}

.nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width 0.25s ease;
}

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

.nav a:hover::after {
  width: 100%;
}

.nav-cta {
  color: #fff !important;
  background: var(--navy);
  padding: 10px 18px;
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f6fbff 0%, #eef5ff 48%, #f7fafc 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(12, 42, 71, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(12, 42, 71, 0.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.72), transparent 88%);
}

.hero-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(0px);
  opacity: 0.7;
}

.hero-bg-one {
  width: 460px;
  height: 460px;
  right: -130px;
  top: -160px;
  background: radial-gradient(circle, rgba(31, 105, 255, 0.28), rgba(31,105,255,0));
}

.hero-bg-two {
  width: 380px;
  height: 380px;
  left: 34%;
  bottom: -240px;
  background: radial-gradient(circle, rgba(63, 184, 217, 0.22), rgba(63,184,217,0));
}

.hero-grid {
  min-height: 710px;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  align-items: center;
  padding-top: 74px;
  padding-bottom: 88px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: #9ed7ff;
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 5vw, 68px);
  line-height: 1.14;
  letter-spacing: -0.04em;
  font-weight: 850;
}

.hero h1 span {
  color: var(--blue);
}

.hero-text {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #1f69ff, #1954d8);
  box-shadow: 0 14px 32px rgba(31, 105, 255, 0.24);
}

.btn-secondary {
  color: var(--navy);
  background: rgba(255,255,255,.76);
  border-color: #cfdae6;
}

.btn-light {
  background: #fff;
  color: var(--navy);
  width: 100%;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-points span,
.ai-badges span {
  font-size: 12px;
  font-weight: 700;
  padding: 7px 12px;
  border: 1px solid rgba(31, 105, 255, 0.14);
  background: rgba(255,255,255,.7);
  border-radius: 999px;
  color: #39526b;
}

.hero-card-wrap {
  display: flex;
  justify-content: center;
}

.hero-card {
  width: 100%;
  max-width: 430px;
  min-height: 455px;
  position: relative;
  overflow: hidden;
  padding: 38px;
  border-radius: 32px;
  color: #fff;
  background: linear-gradient(155deg, #102d4d 0%, #0c2038 65%, #0a1828 100%);
  box-shadow: 0 34px 80px rgba(11, 38, 65, 0.25);
}

.hero-card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -120px;
  bottom: -90px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
}

.card-label {
  font-size: 12px;
  letter-spacing: .16em;
  color: #9fc2e7;
  font-weight: 700;
}

.hero-card h2 {
  margin: 22px 0 28px;
  font-size: 30px;
  line-height: 1.35;
}

.hero-card-list {
  display: grid;
  gap: 18px;
}

.hero-card-list div {
  position: relative;
  z-index: 2;
  padding: 18px 18px 16px;
  border-radius: 18px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
}

.hero-card-list strong {
  font-size: 16px;
}

.hero-card-list p {
  margin: 4px 0 0;
  color: #bfd0df;
  font-size: 13px;
}

.orb {
  position: absolute;
  border-radius: 50%;
}

.orb-a {
  width: 150px;
  height: 150px;
  top: -80px;
  right: -40px;
  background: rgba(49, 119, 255, .45);
  filter: blur(8px);
}

.orb-b {
  width: 90px;
  height: 90px;
  left: -45px;
  bottom: 30px;
  background: rgba(52, 192, 210, .35);
  filter: blur(6px);
}

.stats-section {
  position: relative;
  z-index: 3;
  margin-top: -34px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.stat-item {
  padding: 28px 26px;
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  width: 1px;
  height: 42px;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: var(--line);
}

.stat-item strong {
  display: block;
  color: var(--navy);
  font-size: 28px;
  line-height: 1.25;
}

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

.section {
  padding: 110px 0;
}

.section-soft {
  background: var(--soft);
}

.two-col {
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  gap: 90px;
  align-items: start;
}

.section-heading h2,
.section-title h2,
.ai-copy h2,
.case-copy h2,
.contact-card h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 46px);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.section-title {
  max-width: 800px;
  margin-bottom: 52px;
}

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

.section-title > p:last-child {
  margin: 18px auto 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 15px;
}

.about-copy p {
  margin: 0 0 20px;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 2;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 300px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  transition: 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 48px rgba(24, 47, 75, .10);
  border-color: #d6e2ef;
}

.feature-index {
  font-size: 12px;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: .1em;
}

.feature-card h3 {
  margin: 56px 0 12px;
  font-size: 20px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.service-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 36px;
}

.service-tabs {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-tab {
  width: 100%;
  text-align: left;
  padding: 17px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: #506074;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: .25s ease;
}

.service-tab:hover,
.service-tab.active {
  color: #fff;
  background: var(--navy);
  border-color: var(--navy);
}

.service-panels {
  min-height: 360px;
  border-radius: 26px;
  background: linear-gradient(135deg, #f0f6ff, #f8fbff);
  border: 1px solid #dfe9f4;
  overflow: hidden;
}

.service-panel {
  display: none;
  min-height: 360px;
  padding: 54px;
  align-content: center;
}

.service-panel.active {
  display: grid;
}

.service-panel span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

.service-panel h3 {
  margin: 14px 0 18px;
  max-width: 670px;
  font-size: 30px;
  line-height: 1.45;
}

.service-panel p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.ai-section {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(135deg, #0b2440, #0d3156 58%, #123d65);
}

.ai-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 82% 18%, rgba(46,136,255,.28), transparent 28%), radial-gradient(circle at 10% 90%, rgba(55,182,208,.16), transparent 34%);
}

.ai-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
}

.ai-copy p:not(.eyebrow) {
  color: #c6d4e2;
  font-size: 15px;
  margin: 22px 0 0;
}

.ai-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.ai-badges span {
  color: #dcecff;
  border-color: rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}

.ai-console {
  overflow: hidden;
  border-radius: 26px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 30px 65px rgba(0,0,0,.2);
}

.console-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.console-head span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.36);
}

.console-head em {
  margin-left: auto;
  font-size: 12px;
  font-style: normal;
  color: #91a9c0;
  letter-spacing: .08em;
}

.console-body {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: center;
  gap: 30px;
  padding: 34px;
}

.score-ring {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(#5c9dff 0deg 310deg, rgba(255,255,255,.10) 310deg 360deg);
}

.score-ring > div {
  width: 124px;
  height: 124px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  align-content: center;
  background: #102b49;
}

.score-ring strong {
  font-size: 38px;
  line-height: 1;
}

.score-ring small {
  margin-top: 8px;
  color: #9eb5ca;
  font-size: 12px;
}

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

.console-list div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  font-size: 13px;
}

.console-list span {
  color: #b8c9da;
}

.console-list b {
  font-weight: 700;
  color: #fff;
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
}

.network-card {
  min-height: 210px;
  padding: 38px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.network-card:not(:last-child) {
  border-right: 1px solid var(--line);
}

.network-card strong {
  font-size: 21px;
}

.network-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  top: 29px;
  height: 1px;
  background: #dce4ed;
}

.timeline-item {
  position: relative;
  z-index: 1;
  padding: 0 18px;
}

.timeline-item > span {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 25px;
  border-radius: 50%;
  color: #fff;
  background: var(--navy);
  border: 7px solid #fff;
  box-shadow: 0 0 0 1px #dce4ed;
  font-size: 12px;
  font-weight: 800;
}

.timeline-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.case-section {
  background: linear-gradient(180deg, #fff, #f6f9fc);
}

.case-grid {
  display: grid;
  grid-template-columns: 1fr .85fr;
  gap: 70px;
  align-items: center;
}

.case-copy p:not(.eyebrow) {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.quote-card {
  padding: 42px;
  border-radius: 26px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 54px rgba(29, 50, 76, .09);
}

.quote-mark {
  font-family: Georgia, serif;
  font-size: 72px;
  line-height: .65;
  color: #d8e6f7;
}

.quote-card p {
  margin: 24px 0 28px;
  font-size: 20px;
  line-height: 1.75;
  font-weight: 700;
}

.quote-card span {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
}

.contact-section {
  padding: 0 0 100px;
  background: #f6f9fc;
}

.contact-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 70px;
  align-items: center;
  padding: 58px;
  border-radius: 30px;
  color: #fff;
  background: linear-gradient(135deg, #0d2947, #153d67);
}

.contact-card::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -120px;
  bottom: -180px;
  border-radius: 50%;
  background: rgba(76,146,255,.18);
}

.contact-card > * {
  position: relative;
  z-index: 1;
}

.contact-card > div > p:last-child {
  color: #bfd0df;
  font-size: 14px;
  margin: 18px 0 0;
}

.consult-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 22px;
  background: rgba(255,255,255,.07);
}

.consult-form label:first-child,
.consult-form label:nth-child(3),
.consult-form .btn,
.form-tip {
  grid-column: 1 / -1;
}

.consult-form label span {
  display: block;
  margin-bottom: 7px;
  color: #d4e0ec;
  font-size: 12px;
}

.consult-form input,
.consult-form select {
  width: 100%;
  min-height: 44px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 12px;
  outline: none;
  padding: 0 13px;
  background: rgba(255,255,255,.09);
  color: #fff;
  font-size: 13px;
}

.consult-form select option {
  color: #18293c;
}

.consult-form input::placeholder {
  color: #9fb0c2;
}

.consult-form input:focus,
.consult-form select:focus {
  border-color: rgba(132,188,255,.75);
}

.form-tip {
  min-height: 18px;
  margin: -2px 0 0;
  color: #bfe7d7;
  font-size: 12px;
  text-align: center;
}

.footer {
  background: #0c1826;
  color: #c3cfdb;
  padding: 54px 0 24px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: flex-start;
}

.brand-footer .brand-name {
  color: #fff;
}

.footer-brand p {
  margin: 14px 0 0;
  font-size: 13px;
  color: #8498aa;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 13px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.08);
  color: #6f8293;
  font-size: 12px;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--navy);
  box-shadow: 0 12px 28px rgba(14, 43, 72, .25);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: .25s ease;
  z-index: 90;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: .08s; }
.delay-2 { transition-delay: .16s; }
.delay-3 { transition-delay: .24s; }

@media (max-width: 1024px) {
  .nav { gap: 18px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; min-height: auto; }
  .hero-card-wrap { justify-content: flex-start; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 36px; }
  .ai-grid, .case-grid { grid-template-columns: 1fr; gap: 46px; }
  .contact-card { grid-template-columns: 1fr; gap: 36px; }
  .timeline { grid-template-columns: 1fr; gap: 18px; }
  .timeline::before { left: 28px; right: auto; top: 20px; bottom: 20px; width: 1px; height: auto; }
  .timeline-item { display: grid; grid-template-columns: 64px 1fr; gap: 10px; padding: 0; }
  .timeline-item > span { margin: 0; }
}

@media (max-width: 860px) {
  .container { width: min(100% - 32px, 1180px); }
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 78px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: 0 18px 44px rgba(22, 43, 69, .14);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; }
  .nav a::after { display: none; }
  .nav-cta { margin-top: 6px; text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2)::after { display: none; }
  .stat-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .service-layout { grid-template-columns: 1fr; }
  .service-tabs { display: grid; grid-template-columns: repeat(2, 1fr); }
  .service-panel { padding: 36px; }
  .network-grid { grid-template-columns: 1fr; }
  .network-card:not(:last-child) { border-right: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .brand { min-width: 0; gap: 8px; }
  .brand-logo { width: 118px; }
  .brand-name { font-size: 17px; }
  .hero-grid { padding-top: 56px; padding-bottom: 72px; }
  .hero h1 { font-size: 39px; }
  .hero-text { font-size: 15px; }
  .section { padding: 78px 0; }
  .stats-section { margin-top: -24px; }
  .stat-item { padding: 22px 12px; }
  .stat-item strong { font-size: 23px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 240px; }
  .feature-card h3 { margin-top: 40px; }
  .service-tabs { grid-template-columns: 1fr; }
  .service-panel { min-height: 330px; padding: 28px; }
  .service-panel h3 { font-size: 24px; }
  .console-body { grid-template-columns: 1fr; justify-items: center; }
  .console-list { width: 100%; }
  .contact-card { padding: 34px 24px; }
  .consult-form { grid-template-columns: 1fr; padding: 18px; }
  .consult-form label,
  .consult-form label:first-child,
  .consult-form label:nth-child(3),
  .consult-form .btn,
  .form-tip { grid-column: 1; }
  .footer-grid, .footer-bottom { flex-direction: column; }
  .footer-links { gap: 16px; }
  .quote-card { padding: 30px; }
  .quote-card p { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}