:root {
  --ink: #17242b;
  --muted: #5f717a;
  --dim: #8aa0aa;
  --line: rgba(23, 58, 74, 0.12);
  --panel: rgba(255, 255, 255, 0.86);
  --panel-solid: #ffffff;
  --cyan: #0f9ec5;
  --blue: #2476dd;
  --gold: #b9842e;
  --bg: #f5f9fb;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 8%, rgba(15, 158, 197, 0.16), transparent 30rem),
    radial-gradient(circle at 86% 18%, rgba(36, 118, 221, 0.12), transparent 28rem),
    linear-gradient(180deg, #f7fbfd 0%, var(--bg) 54%, #ffffff 100%);
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px max(22px, calc((100vw - var(--max)) / 2));
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0));
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
}

.brand,
.nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(15, 158, 197, 0.3);
  background:
    linear-gradient(135deg, rgba(36, 118, 221, 0.95), rgba(15, 158, 197, 0.95)),
    #ffffff;
  box-shadow: 0 10px 26px rgba(15, 158, 197, 0.18);
}

.brand-mark span {
  display: block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-left-color: transparent;
  transform: rotate(45deg);
}

.brand-mark span::after {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  margin: 4px;
  background: #ffffff;
}

.brand-text {
  overflow: hidden;
  font-size: 15px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav {
  gap: 24px;
  color: #50636c;
  font-size: 15px;
  font-weight: 550;
}

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

.hero {
  position: relative;
  min-height: 86vh;
  overflow: hidden;
  display: grid;
  align-items: center;
  background:
    radial-gradient(circle at 76% 24%, rgba(15, 158, 197, 0.32), transparent 20rem),
    radial-gradient(circle at 90% 64%, rgba(36, 118, 221, 0.24), transparent 24rem),
    radial-gradient(circle at 60% 74%, rgba(185, 132, 46, 0.12), transparent 20rem),
    linear-gradient(120deg, rgba(15, 158, 197, 0.12), transparent 32%),
    #f8fcff;
  padding: 118px max(22px, calc((100vw - var(--max)) / 2)) 64px;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: 1;
  pointer-events: none;
}

.hero::before {
  right: max(34px, calc((100vw - var(--max)) / 2));
  top: 24%;
  width: min(380px, 30vw);
  height: min(230px, 19vw);
  border: 1px solid rgba(15, 158, 197, 0.24);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(224, 246, 252, 0.28)),
    linear-gradient(90deg, rgba(15, 158, 197, 0.2) 0 1px, transparent 1px 100%),
    linear-gradient(rgba(36, 118, 221, 0.14) 0 1px, transparent 1px 100%);
  background-size: auto, 34px 100%, 100% 28px;
  box-shadow: 0 26px 72px rgba(36, 118, 221, 0.14);
  clip-path: polygon(0 0, 88% 0, 100% 18%, 100% 100%, 12% 100%, 0 82%);
}

.hero::after {
  right: max(64px, calc((100vw - var(--max)) / 2 + 28px));
  bottom: 18%;
  width: min(300px, 24vw);
  height: 88px;
  border: 1px solid rgba(36, 118, 221, 0.2);
  background:
    radial-gradient(circle at 14% 50%, rgba(15, 158, 197, 0.82) 0 4px, transparent 5px),
    radial-gradient(circle at 42% 34%, rgba(36, 118, 221, 0.72) 0 4px, transparent 5px),
    radial-gradient(circle at 72% 58%, rgba(185, 132, 46, 0.62) 0 4px, transparent 5px),
    linear-gradient(16deg, transparent 23%, rgba(15, 158, 197, 0.34) 23.3%, transparent 24%),
    linear-gradient(-10deg, transparent 47%, rgba(36, 118, 221, 0.28) 47.3%, transparent 48%),
    rgba(255, 255, 255, 0.56);
  box-shadow: 0 18px 50px rgba(15, 158, 197, 0.12);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 1;
  background:
    linear-gradient(rgba(36, 118, 221, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 118, 221, 0.09) 1px, transparent 1px),
    linear-gradient(112deg, transparent 48%, rgba(15, 158, 197, 0.32) 48.12%, transparent 48.55%),
    linear-gradient(136deg, transparent 55%, rgba(36, 118, 221, 0.28) 55.12%, transparent 55.55%),
    linear-gradient(30deg, transparent 64%, rgba(185, 132, 46, 0.22) 64.12%, transparent 64.45%),
    radial-gradient(circle at 60% 22%, #ffffff 0 2px, rgba(15, 158, 197, 0.86) 3px, transparent 7px),
    radial-gradient(circle at 72% 30%, #ffffff 0 2px, rgba(36, 118, 221, 0.82) 3px, transparent 7px),
    radial-gradient(circle at 84% 42%, #ffffff 0 2px, rgba(15, 158, 197, 0.78) 3px, transparent 7px),
    radial-gradient(circle at 90% 58%, #ffffff 0 2px, rgba(36, 118, 221, 0.74) 3px, transparent 7px),
    radial-gradient(circle at 66% 66%, #ffffff 0 2px, rgba(185, 132, 46, 0.66) 3px, transparent 7px),
    radial-gradient(circle at 78% 76%, #ffffff 0 2px, rgba(15, 158, 197, 0.64) 3px, transparent 7px);
  background-size: 34px 34px, 34px 34px, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%;
}

.hero-media::before,
.hero-media::after {
  content: "";
  position: absolute;
}

.hero-media::before {
  right: -10%;
  top: 7%;
  width: min(780px, 62vw);
  height: min(500px, 44vw);
  border: 1px solid rgba(15, 158, 197, 0.34);
  border-radius: 999px;
  background:
    radial-gradient(circle at 24% 42%, rgba(15, 158, 197, 0.24), transparent 4rem),
    linear-gradient(104deg, transparent 34%, rgba(15, 158, 197, 0.34) 34.1%, transparent 34.45%),
    linear-gradient(148deg, transparent 44%, rgba(36, 118, 221, 0.3) 44.1%, transparent 44.45%),
    linear-gradient(22deg, transparent 58%, rgba(15, 158, 197, 0.28) 58.1%, transparent 58.45%);
  box-shadow: 0 28px 90px rgba(36, 118, 221, 0.16);
  transform: rotate(-12deg);
}

.hero-media::after {
  right: 4%;
  top: 22%;
  width: min(460px, 38vw);
  height: min(460px, 38vw);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 44%, rgba(15, 158, 197, 0.2) 44.2% 44.7%, transparent 45%),
    radial-gradient(circle at 50% 50%, transparent 0 64%, rgba(36, 118, 221, 0.16) 64.2% 64.7%, transparent 65%),
    conic-gradient(from 18deg, transparent 0 18%, rgba(15, 158, 197, 0.18) 19%, transparent 22% 44%, rgba(36, 118, 221, 0.2) 45%, transparent 48% 72%, rgba(185, 132, 46, 0.16) 73%, transparent 76%);
  filter: drop-shadow(0 22px 52px rgba(15, 158, 197, 0.14));
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(248, 252, 255, 0.99) 0%, rgba(248, 252, 255, 0.84) 43%, rgba(248, 252, 255, 0.08) 100%),
    linear-gradient(0deg, var(--bg) 0%, rgba(248, 252, 255, 0) 42%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 760px;
  animation: rise 680ms ease both;
}

.eyebrow {
  margin: 0 0 6px;
}

.section-kicker {
  margin: 0 0 14px;
}

.eyebrow,
.section-kicker {
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
  max-width: 11em;
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

.hero-copy,
.lead {
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-copy {
  max-width: 680px;
  margin-bottom: 34px;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 650;
}

.primary-link {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #ffffff;
  border-color: var(--cyan);
}

.secondary-link:hover,
.primary-link:hover {
  transform: translateY(-1px);
}

.section {
  padding: 84px 22px;
  border-top: 1px solid var(--line);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.split,
.method-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.75fr) minmax(0, 1fr);
  gap: 48px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 34px;
}

.product-row,
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  box-shadow: 0 24px 80px rgba(23, 58, 74, 0.08);
}

.product-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 8px;
}

.product-row article,
.service-card {
  min-height: 260px;
  padding: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 249, 252, 0.98));
}

.product-row article {
  min-height: 210px;
}

.product-row h3 {
  margin: 0 0 16px;
  font-size: 22px;
}

.card-index {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
}

.service-card h3 {
  margin: 46px 0 14px;
  font-size: 21px;
}

.product-row p,
.service-card p,
.method-list p,
.contact-box p,
.site-footer p {
  color: var(--muted);
}

.method {
  background:
    linear-gradient(135deg, rgba(15, 158, 197, 0.08), transparent 28%),
    #ffffff;
}

.method-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: method;
}

.method-list li {
  position: relative;
  padding: 0 0 26px 48px;
  border-left: 1px solid var(--line);
}

.method-list li::before {
  counter-increment: method;
  content: counter(method);
  position: absolute;
  left: -18px;
  top: 0;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
}

.method-list span {
  display: block;
  margin-bottom: 6px;
  font-size: 20px;
  font-weight: 700;
}

.contact-box {
  max-width: 920px;
  padding: 40px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 24px 80px rgba(23, 58, 74, 0.08);
}

.contact-box h2 {
  margin-bottom: 20px;
}

.contact-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.contact-line span {
  color: var(--dim);
}

.contact-line strong {
  color: var(--blue);
  overflow-wrap: anywhere;
}

.site-footer {
  flex-direction: column;
  justify-content: center;
  gap: 22px;
  padding: 34px max(22px, calc((100vw - var(--max)) / 2));
  border-top: 1px solid var(--line);
  background: #ffffff;
  text-align: center;
}

.site-footer p {
  margin: 4px 0 0;
}

.copyright {
  white-space: nowrap;
}

.footer-record {
  text-align: center;
}

.footer-record a {
  color: var(--blue);
}

.police-record {
  font-size: 13px;
}

.plain-page {
  min-height: 100vh;
  padding-top: 92px;
}

.plain-hero {
  padding: 82px 22px 36px;
  background:
    radial-gradient(circle at 80% 24%, rgba(15, 158, 197, 0.18), transparent 20rem),
    #f8fcff;
  border-bottom: 1px solid var(--line);
}

.plain-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 22px 82px;
}

.plain-content h2 {
  margin: 34px 0 12px;
  font-size: 24px;
}

.plain-content p,
.plain-content li {
  color: var(--muted);
}

.plain-content a {
  color: var(--blue);
}

.simple-list {
  padding-left: 1.2em;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hero::before,
  .hero::after {
    opacity: 0.5;
    transform: scale(0.86);
    transform-origin: right center;
  }

  .hero {
    min-height: 86vh;
    padding-top: 118px;
  }

  .split,
  .method-layout,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .service-card h3 {
    margin-top: 28px;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .brand-text {
    max-width: 68vw;
  }

  .hero {
    min-height: 88vh;
    padding-bottom: 56px;
  }

  h1 {
    font-size: 34px;
    line-height: 1.08;
    max-width: 100%;
    word-break: break-all;
  }

  .hero-content {
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
  }

  .hero-copy,
  .lead {
    font-size: 16px;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .hero-copy {
    max-width: 100%;
  }

  .hero::before,
  .hero::after {
    display: none;
  }

  .section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .contact-box {
    padding: 26px;
  }

  .contact-line {
    display: block;
  }

  .site-footer {
    display: flex;
  }

  .copyright {
    white-space: normal;
  }
}