:root {
  --ydv2-brand: #103f35;
  --ydv2-secondary: #0f765d;
  --ydv2-accent: #f2b705;
  --ydv2-paper: #f7f9f7;
  --ydv2-white: #fff;
  --ydv2-ink: #10241f;
  --ydv2-muted: #5f6c67;
  --ydv2-line: #e1e7e4;
  --ydv2-mint: #eef6f2;
  --ydv2-radius-lg: 32px;
  --ydv2-radius-md: 22px;
  --ydv2-radius-sm: 14px;
  --ydv2-button-radius: 14px;
  --ydv2-section-space: 112px;
  --ydv2-card-gap: 22px;
  --ydv2-shadow: 0 14px 38px rgba(16, 63, 53, .07);
  --ydv2-shadow-lg: 0 24px 70px rgba(16, 63, 53, .1);
  --ydv2-container: 1180px;
  --ydv2-header-height: 76px;
  --ydv2-motion-distance: 14px;
  --ydv2-motion-duration: .48s;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--ydv2-header-height) + 18px); }
body {
  margin: 0;
  min-width: 0;
  color: var(--ydv2-ink);
  background: var(--ydv2-paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.ydv2-layer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { color: inherit; font: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
::selection { background: rgba(15, 118, 93, .18); }
[hidden] { display: none !important; }
[inert] { pointer-events: none; user-select: none; }

.ydv2-container { width: min(calc(100% - 40px), var(--ydv2-container)); margin-inline: auto; }
.ydv2-section { position: relative; padding: var(--ydv2-section-space) 0; }
.section-head { max-width: 780px; margin-bottom: 48px; }
.section-head-center { margin-inline: auto; text-align: center; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--ydv2-secondary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.section-label::before { content: ""; width: 28px; height: 2px; border-radius: 99px; background: currentColor; }
.section-head h2,
.platform-copy h2,
.faq-layout h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.12;
  letter-spacing: -.045em;
}
.section-head > p,
.platform-copy > p,
.faq-layout > div:first-child > p { max-width: 720px; margin: 20px 0 0; color: var(--ydv2-muted); font-size: 17px; }
.section-head-center > p { margin-inline: auto; }
.ydv2-icon { width: 20px; height: 20px; flex: 0 0 auto; }

.skip-link {
  position: fixed;
  z-index: 500;
  top: -70px;
  left: 18px;
  padding: 10px 16px;
  border-radius: 10px;
  color: #fff;
  background: var(--ydv2-brand);
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; }
.scroll-progress { position: fixed; z-index: 160; top: 0; left: 0; width: 0; height: 3px; background: linear-gradient(90deg, var(--ydv2-secondary), var(--ydv2-accent)); }

:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--ydv2-accent) 72%, #fff);
  outline-offset: 3px;
}

.reveal { opacity: 1; transform: none; }
.ydv2-motion .reveal[data-reveal-ready] {
  opacity: 1;
  transform: none;
  animation: ydv2-reveal-in var(--ydv2-motion-duration) cubic-bezier(.2,.7,.2,1) both;
}
.ydv2-no-motion .reveal { opacity: 1; transform: none; }

@keyframes ydv2-reveal-in {
  from { opacity: .01; transform: translateY(var(--ydv2-motion-distance)); }
  to { opacity: 1; transform: none; }
}

.page-shell { min-height: 66vh; padding: calc(var(--ydv2-header-height) + 80px) 0 100px; }
.page-content { max-width: 860px; }
.page-content h1 { margin: 0 0 24px; color: var(--ydv2-brand); font-size: clamp(42px, 6vw, 68px); line-height: 1.08; letter-spacing: -.05em; }
.page-content p { color: var(--ydv2-muted); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}