:root {
  
  --brand-50:  #eef3ff;
  --brand-100: #dce6fe;
  --brand-200: #bcd0fb;
  --brand-300: #8eadf7;
  --brand-400: #6389f0;
  --brand-500: #3b66e8;
  --brand-600: #1a4add;
  --brand-700: #153bc4;
  --brand-800: #16329e;
  --brand-900: #172e7f;

  
  --accent-400: #fcc860;
  --accent-500: #f5a623;
  --accent-600: #e08e0a;

  
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  
  --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;

  
  --text-xs:    12px;
  --text-sm:    14px;
  --text-base:  16px;
  --text-lg:    18px;
  --text-xl:    20px;
  --text-2xl:   24px;
  --text-3xl:   30px;
  --text-4xl:   38px;
  --text-5xl:   50px;
  --text-6xl:   62px;

  
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;
  --sp-28: 120px;

  
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-2xl: 32px;
  --r-full: 9999px;

  
  --shadow-xs: 0 1px 2px rgba(15,23,42,.04);
  --shadow-sm: 0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --shadow-rest: 0 2px 6px rgba(15,23,42,.04), 0 1px 4px rgba(15,23,42,.06);
  --shadow-md: 0 4px 12px rgba(15,23,42,.06), 0 2px 6px rgba(15,23,42,.04);
  --shadow-hover: 0 12px 28px rgba(15,23,42,.10), 0 4px 12px rgba(15,23,42,.06);
  --shadow-float: 0 24px 52px rgba(15,23,42,.14), 0 8px 18px rgba(15,23,42,.06);
  --shadow-xl: 0 32px 64px rgba(15,23,42,.18);

  
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: .2s var(--ease-out);
  --t-base: .35s var(--ease-out);
  --t-slow: .6s var(--ease-out);

  
  --container: 1280px;
}


*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--slate-700);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
h1, h2, h3, h4 { color: var(--slate-900); font-weight: 700; line-height: 1.2; letter-spacing: -.02em; }


.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-6);
}
.text-center { text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand-600);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--brand-600);
  display: inline-block;
}


.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: .08s; }
.reveal.delay-2 { transition-delay: .16s; }
.reveal.delay-3 { transition-delay: .24s; }
.reveal.delay-4 { transition-delay: .32s; }
.reveal.delay-5 { transition-delay: .40s; }


@keyframes landing-fade-up {
  0% { opacity: 0; transform: translateY(24px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes landing-fade-down {
  0% { opacity: 0; transform: translateY(-24px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes landing-fade-in {
  0% { opacity: 0; }
  100% { opacity: 1; }
}
@keyframes landing-scale-in {
  0% { opacity: 0; transform: scale(.95); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes landing-fade-right {
  0% { opacity: 0; transform: translateX(-24px); }
  100% { opacity: 1; transform: translateX(0); }
}
@keyframes landing-fade-left {
  0% { opacity: 0; transform: translateX(24px); }
  100% { opacity: 1; transform: translateX(0); }
}

.landing-fade-up, .landing-fade-down, .landing-fade-in, .landing-scale-in, .landing-fade-right, .landing-fade-left {
  opacity: 0;
  will-change: opacity, transform;
}
.landing-fade-up   { animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-up; }
.landing-fade-down { animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-down; }
.landing-fade-in   { animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-in; }
.landing-scale-in  { animation: .7s cubic-bezier(.16,1,.3,1) both landing-scale-in; }
.landing-fade-right{ animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-right; }
.landing-fade-left { animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-left; }


.ld-1 { animation-delay: .08s; }
.ld-2 { animation-delay: .16s; }
.ld-3 { animation-delay: .24s; }
.ld-4 { animation-delay: .32s; }
.ld-5 { animation-delay: .40s; }
.ld-6 { animation-delay: .48s; }
.ld-7 { animation-delay: .56s; }
.ld-8 { animation-delay: .64s; }


.anim-in {
  opacity: 0;
}
.anim-in.in {
  animation: .7s cubic-bezier(.16,1,.3,1) both landing-fade-up;
}
.anim-in.scale.in { animation-name: landing-scale-in; }
.anim-in.left.in  { animation-name: landing-fade-right; }
.anim-in.right.in { animation-name: landing-fade-left; }
.anim-in.down.in  { animation-name: landing-fade-down; }


@keyframes tw-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}
.shimmer {
  --_spread: 3ch;
  background-image: linear-gradient(110deg,
    var(--shimmer-base, currentColor) 40%,
    var(--shimmer-glow, rgba(255,255,255,.85)) 50%,
    var(--shimmer-base, currentColor) 60%);
  background-size: 200% 100%;
  background-repeat: no-repeat;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: tw-shimmer var(--shimmer-duration, 3.5s) linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .landing-fade-up, .landing-fade-down, .landing-fade-in, .landing-scale-in, .landing-fade-right, .landing-fade-left,
  .anim-in.in { opacity: 1; animation: none; }
  .shimmer { animation: none; background-image: none; -webkit-text-fill-color: currentColor; }
  html { scroll-behavior: auto; }
}