:root {
  --bg: #070a12;
  --bg2: #0b1230;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --line: rgba(255, 255, 255, 0.12);
  --accent: #7c3aed;
  --accent2: #22d3ee;
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  --container: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei",
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(124, 58, 237, 0.35), transparent 65%),
    radial-gradient(1200px 800px at 80% 10%, rgba(34, 211, 238, 0.25), transparent 60%),
    linear-gradient(180deg, var(--bg), #050710 75%, #050710);
  line-height: 1.6;
}

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

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  z-index: 999;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid var(--line);
}

.skip-link:focus {
  left: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 10, 18, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 140px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12) inset, 0 12px 36px rgba(124, 58, 237, 0.2);
}

.brand-text {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav a {
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 12px;
  transition: background 140ms ease, color 140ms ease, transform 140ms ease;
}

.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.nav-cta {
  color: var(--text) !important;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.9), rgba(34, 211, 238, 0.75));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.nav-cta:hover {
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  background: rgba(255, 255, 255, 0.86);
  margin: 4px auto;
  border-radius: 2px;
}

.hero {
  position: relative;
  padding: 64px 0 24px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(500px 320px at 62% 36%, rgba(0, 0, 0, 0.9), transparent 70%);
  opacity: 0.6;
}

.eyebrow {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
}

.hero-title {
  margin: 0 0 12px;
  font-size: clamp(34px, 4.2vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.accent {
  background: linear-gradient(135deg, rgba(124, 58, 237, 1), rgba(34, 211, 238, 0.95));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 16px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 44px;
  padding: 0 16px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-weight: 650;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.button.primary {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.92), rgba(34, 211, 238, 0.75));
}

.button.secondary {
  background: rgba(255, 255, 255, 0.1);
}

.button.ghost {
  background: transparent;
}

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

.hero-metrics div {
  padding: 14px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-metrics dt {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 6px;
}

.hero-metrics dd {
  margin: 0;
  font-weight: 650;
}

.deck-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}

.deck-card img {
  display: block;
  width: 100%;
  height: auto;
}

.deck-card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 240px at 70% 20%, rgba(34, 211, 238, 0.25), transparent 60%),
    radial-gradient(600px 300px at 20% 80%, rgba(124, 58, 237, 0.25), transparent 65%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.section {
  padding: 72px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.section-header h1,
.section-header h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  max-width: 66ch;
}

.grid {
  display: grid;
  gap: 14px;
}

.cards {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  padding: 18px 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 140ms ease, background 140ms ease;
}

.card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.065);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.solutions {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.solution {
  padding: 18px 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.solution h3 {
  margin: 0 0 6px;
}

.solution p {
  margin: 0 0 12px;
  color: var(--muted);
}

.solution ul {
  margin: 0;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.78);
}

.split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  padding: 18px 18px;
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.panel h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.panel-risk {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(255, 255, 255, 0.02));
}

.panel-solution {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(124, 58, 237, 0.08));
}

.bullets {
  margin: 0;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.78);
}

.bullets li + li {
  margin-top: 8px;
}

.callout {
  margin-top: 18px;
  padding: 18px 18px;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(34, 211, 238, 0.08));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.callout h3 {
  margin: 0 0 6px;
}

.callout p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
}

.link {
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.28);
  text-underline-offset: 3px;
}

.link:hover {
  text-decoration-color: rgba(255, 255, 255, 0.52);
}

.address {
  margin: 6px 0 0;
  font-style: normal;
  color: rgba(255, 255, 255, 0.78);
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.68);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 14px;
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.92);
}

.prose {
  max-width: 70ch;
}

.muted {
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav {
    position: fixed;
    left: 16px;
    right: 16px;
    top: 84px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(7, 10, 18, 0.94);
    box-shadow: var(--shadow);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    width: 100%;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

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