:root {
  color-scheme: light;
  --ink: #14251f;
  --ink-soft: #50645c;
  --paper: #f4f1e8;
  --paper-deep: #ebe5d8;
  --forest: #123d30;
  --forest-bright: #1e5946;
  --signal: #d96b3f;
  --signal-soft: #f3b18f;
  --line: rgba(20, 37, 31, 0.14);
  --line-light: rgba(255, 255, 255, 0.18);
  --radius-xl: 32px;
  --radius-lg: 22px;
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

section[id] { scroll-margin-top: 90px; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(20, 37, 31, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 37, 31, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
  -webkit-font-smoothing: antialiased;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 28px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(244, 241, 232, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--forest);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-mark {
  position: relative;
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  background: var(--forest);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark i {
  content: "";
  position: absolute;
  border: 1px solid rgba(244, 241, 232, 0.75);
  border-radius: 50%;
}

.brand-mark::before { width: 26px; height: 26px; }
.brand-mark::after { width: 14px; height: 14px; }
.brand-mark i { width: 4px; height: 4px; background: var(--signal-soft); border: 0; }

.nav-links { display: flex; align-items: center; gap: 24px; }

.nav-links a {
  color: var(--ink-soft);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 650;
  transition: color 160ms ease;
}

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

main { max-width: 1240px; margin: 0 auto; padding: 0 28px 72px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  min-height: 650px;
  align-items: stretch;
  padding: 54px 0 30px;
}

.hero-copy {
  display: flex;
  padding: 58px 62px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
  background: rgba(255, 255, 255, 0.33);
}

.eyebrow {
  margin: 0 0 17px;
  color: var(--signal);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

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

h1 {
  margin-bottom: 26px;
  font-size: clamp(48px, 5.2vw, 72px);
  font-weight: 720;
  line-height: 1.12;
  letter-spacing: 0.015em;
}

h2 { margin-bottom: 14px; font-size: clamp(32px, 4vw, 46px); line-height: 1.22; }
h3 { margin-bottom: 10px; font-size: 20px; line-height: 1.45; }

.lead {
  max-width: 660px;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 2;
}

.primary-button {
  display: inline-flex;
  min-height: 48px;
  padding: 0 22px;
  align-items: center;
  gap: 16px;
  border-radius: 999px;
  color: #fff;
  background: var(--forest);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease;
}

.primary-button:hover { transform: translateY(-2px); background: var(--forest-bright); }

.radar-panel {
  position: relative;
  display: flex;
  min-height: 560px;
  padding: 42px;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  color: #fff;
  background:
    radial-gradient(circle at 50% 45%, rgba(64, 137, 105, 0.8), transparent 42%),
    var(--forest);
}

.radar-visual { position: relative; width: min(100%, 420px); aspect-ratio: 1; margin: auto; }

.ring, .axis, .sweep, .signal { position: absolute; }

.ring {
  top: 50%; left: 50%;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.ring-one { width: 34%; height: 34%; }
.ring-two { width: 66%; height: 66%; }
.ring-three { width: 98%; height: 98%; }

.axis { background: rgba(255, 255, 255, 0.13); }
.axis-x { top: 50%; left: 1%; width: 98%; height: 1px; }
.axis-y { top: 1%; left: 50%; width: 1px; height: 98%; }

.sweep {
  inset: 1%;
  border-radius: 50%;
  background: conic-gradient(from 18deg, transparent 0 79%, rgba(243, 177, 143, 0.38) 95%, transparent 100%);
  animation: scan 7s linear infinite;
}

.signal {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal-soft);
  box-shadow: 0 0 0 7px rgba(243, 177, 143, 0.13), 0 0 22px rgba(243, 177, 143, 0.9);
}

.signal-one { top: 26%; left: 63%; }
.signal-two { top: 59%; left: 27%; }
.signal-three { top: 72%; left: 70%; }

.radar-caption {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid var(--line-light);
  color: rgba(255, 255, 255, 0.7);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 12px;
  letter-spacing: 0.1em;
}

@keyframes scan { to { transform: rotate(360deg); } }

.section { padding: 92px 0; }

.section-heading { max-width: 710px; margin: 0 auto 46px; text-align: center; }
.section-heading > p:last-child { color: var(--ink-soft); line-height: 1.8; }

.about-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.about-section .section-heading { margin: 0; text-align: left; }

.about-copy {
  padding: 6px 0 6px 38px;
  border-left: 2px solid var(--signal);
}

.about-copy p { margin-bottom: 18px; color: var(--ink-soft); font-size: 17px; line-height: 2; }
.about-copy p:last-child { margin-bottom: 0; }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }

.service-grid article {
  min-height: 270px;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.25);
  transition: background 180ms ease, transform 180ms ease;
}

.service-grid article:last-child { border-right: 0; }
.service-grid article:hover { background: rgba(255, 255, 255, 0.68); transform: translateY(-4px); }

.service-number {
  display: block;
  margin-bottom: 54px;
  color: var(--signal);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.service-grid p, .process-list p, .contact-panel p { color: var(--ink-soft); line-height: 1.85; }

.process-section {
  margin: 32px -28px;
  padding-right: 28px;
  padding-left: 28px;
  border-radius: var(--radius-xl);
  color: #fff;
  background: var(--forest);
}

.process-section .eyebrow { color: var(--signal-soft); }

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li { padding: 28px; border-left: 1px solid var(--line-light); }
.process-list li:last-child { border-right: 1px solid var(--line-light); }
.process-list span { display: block; margin-bottom: 40px; color: var(--signal-soft); font-size: 13px; font-weight: 800; }
.process-list p { margin-bottom: 0; color: rgba(255, 255, 255, 0.64); }

.contact-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.36);
}

.contact-list { margin: 0; }
.contact-list div { display: grid; grid-template-columns: 100px 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-list div:first-child { padding-top: 0; }
.contact-list div:last-child { padding-bottom: 0; border-bottom: 0; }
dt { color: var(--ink-soft); font-family: "Microsoft YaHei", sans-serif; font-size: 12px; }
dd { margin: 0; line-height: 1.65; }
.contact-list a { color: var(--forest-bright); font-weight: 700; }

.site-footer { border-top: 1px solid var(--line); background: var(--paper-deep); }

.footer-inner {
  display: flex;
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 28px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--ink-soft);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 12px;
}

.beian { display: flex; flex-wrap: wrap; gap: 18px; }
.beian a:hover { color: var(--signal); }
.beian-pending { color: #7c7468; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sweep { animation: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
  .radar-panel { min-height: 480px; border-radius: 0 0 var(--radius-xl) var(--radius-xl); }
  .service-grid, .process-list { grid-template-columns: repeat(2, 1fr); }
  .service-grid article:nth-child(2) { border-right: 0; }
  .service-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .process-list li:nth-child(3) { border-left: 0; }
  .process-list li:last-child { border-right: 0; }
}

@media (max-width: 680px) {
  .site-header, main, .footer-inner { padding-right: 18px; padding-left: 18px; }
  .hero { min-height: 0; padding-top: 28px; }
  .hero-copy { padding: 42px 26px; }
  h1 { font-size: clamp(42px, 14vw, 60px); }
  .lead { font-size: 15px; }
  .radar-panel { min-height: 390px; padding: 28px; }
  .section { padding: 68px 0; }
  .process-section { margin-right: -18px; margin-left: -18px; padding-right: 18px; padding-left: 18px; }
  .about-section, .contact-panel { grid-template-columns: 1fr; gap: 34px; }
  .about-copy { padding-left: 22px; }
  .service-grid, .process-list { grid-template-columns: 1fr; }
  .service-grid article { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--line); }
  .service-grid article:last-child { border-bottom: 0; }
  .service-number { margin-bottom: 30px; }
  .process-list li, .process-list li:nth-child(3) { border-right: 0; border-bottom: 1px solid var(--line-light); border-left: 0; }
  .process-list li:last-child { border-bottom: 0; }
  .contact-panel { padding: 30px 24px; }
  .contact-list div { grid-template-columns: 82px 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}