:root {
  color-scheme: light;
  --bg: #f4f8fb;
  --bg-accent: #eef6fb;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #132232;
  --muted: #5f6f80;
  --line: rgba(19, 34, 50, 0.1);
  --teal: #2dd4bf;
  --blue: #0ea5e9;
  --accent-strong: rgba(14, 165, 233, 0.22);
  --accent-soft: rgba(45, 212, 191, 0.14);
  --shadow: 0 18px 40px rgba(15, 33, 49, 0.08);
  --max-width: 1040px;
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0b1016;
    --bg-accent: #101821;
    --surface: rgba(20, 28, 36, 0.88);
    --surface-strong: #18212b;
    --text: #edf3f7;
    --muted: #97a6b3;
    --line: rgba(255, 255, 255, 0.08);
    --accent-strong: rgba(45, 212, 191, 0.22);
    --accent-soft: rgba(14, 165, 233, 0.14);
    --shadow: 0 22px 54px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top, rgba(45, 212, 191, 0.12), transparent 28%),
    linear-gradient(180deg, #f7fbfd 0%, var(--bg) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  width: 22rem;
  height: 22rem;
  border-radius: 999px;
  pointer-events: none;
  z-index: 0;
  filter: blur(60px);
  opacity: 0.45;
  animation: ambient-drift 16s ease-in-out infinite;
}

body::before {
  top: 5rem;
  right: -7rem;
  background: rgba(45, 212, 191, 0.16);
}

body::after {
  bottom: 7rem;
  left: -8rem;
  background: rgba(14, 165, 233, 0.12);
  animation-delay: -8s;
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      radial-gradient(circle at top, rgba(45, 212, 191, 0.12), transparent 24%),
      radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 22%),
      linear-gradient(180deg, #0a0f14 0%, #0b1016 44%, #0f151c 100%);
  }
}

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

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

.container {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(244, 248, 251, 0.84);
  border-bottom: 1px solid var(--line);
}

main {
  flex: 1;
  display: flex;
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.header-inner {
  min-height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.26rem;
  font-weight: 700;
}

.brand img {
  width: 56px;
  height: 56px;
  flex: 0 0 auto;
}

.brand span {
  position: relative;
  font-size: 1.76rem;
  line-height: 1;
  letter-spacing: 0.015em;
  font-weight: 800;
}

.hero {
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 0 56px;
}

.hero-copy {
  animation: rise-in 720ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-copy {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-copy::before {
  content: "";
  position: absolute;
  top: -2.5rem;
  left: -2rem;
  width: 18rem;
  height: 18rem;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(45, 212, 191, 0.18) 0%, rgba(45, 212, 191, 0.08) 34%, transparent 72%);
  filter: blur(20px);
  opacity: 0.9;
  pointer-events: none;
  z-index: -1;
}

.hero-kicker {
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #0f766e;
  font-size: 0.92rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  box-shadow: 0 0 0 8px rgba(45, 212, 191, 0.1);
}

@media (prefers-color-scheme: dark) {
  .hero-kicker {
    color: #7ee9d7;
  }

  .hero-kicker::before {
    box-shadow: 0 0 0 8px rgba(45, 212, 191, 0.08);
  }
}

.hero h1,
.section-heading h2 {
  margin: 0;
  letter-spacing: -0.03em;
}

.accent-text {
  color: var(--blue);
  background: linear-gradient(135deg, var(--teal), var(--blue) 65%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.title-line {
  display: block;
}

.hero h1 {
  margin-top: 0;
  font-size: clamp(1.9rem, 3.8vw, 3.3rem);
  line-height: 1.08;
}

.lead {
  color: var(--muted);
  line-height: 1.8;
}

.lead {
  margin: 20px 0 0;
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.04rem;
}

.hero-metrics {
  margin: 28px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hero-metrics div {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-metrics div {
  padding: 18px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.hero-metrics div::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, rgba(45, 212, 191, 0.92), rgba(14, 165, 233, 0.72));
  opacity: 0.92;
}

.hero-metrics div:hover {
  transform: translateY(-4px);
  border-color: var(--accent-strong);
}

.hero-metrics dt {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-metrics dd {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.site-footer {
  padding: 36px 0 24px;
}

.footer-inner {
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  line-height: 1.7;
}

.footer-meta span,
.footer-meta a {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
}

.footer-meta a {
  text-decoration: underline;
  text-decoration-color: rgba(14, 165, 233, 0.28);
  text-underline-offset: 0.14em;
  white-space: nowrap;
}

.police-beian {
  display: inline-flex !important;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.police-beian img {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.police-beian span {
  display: inline;
  white-space: nowrap;
}

.footer-meta a:hover {
  color: var(--text);
  text-decoration-color: rgba(14, 165, 233, 0.54);
}

@keyframes ambient-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(16px, -12px, 0) scale(1.05);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(var(--max-width), calc(100% - 44px));
  }

  .header-inner {
    min-height: 80px;
  }

  .hero {
    align-items: flex-start;
    padding-top: 56px;
    padding-bottom: 40px;
  }

  .hero-copy {
    width: 100%;
    padding-inline: 2px;
  }

  .lead {
    padding-inline: 8px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(11, 16, 22, 0.82);
  }

  .hero-copy::before {
    background:
      radial-gradient(circle, rgba(45, 212, 191, 0.2) 0%, rgba(14, 165, 233, 0.08) 34%, transparent 74%);
    opacity: 0.78;
  }

  .hero-metrics div {
    background: rgba(20, 28, 36, 0.9);
  }

  .brand img {
    filter: drop-shadow(0 4px 12px rgba(14, 165, 233, 0.12));
  }

}

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