:root{
  --earth-50:#f4f7f6; --earth-100:#e3ebe8; --earth-200:#c5d7d2; --earth-300:#9bbab2;
  --earth-400:#729a90; --earth-500:#537f75; --earth-600:#40655d; --earth-700:#35524c;
  --earth-800:#2d4240; --earth-900:#263735; --earth-950:#0f1a19;
  --accent:#9bbab2; --accent-strong:#729a90; --blue:#60a5fa; --emerald:#34d399;
}
*{box-sizing:border-box;}
body{background-color:var(--earth-950);color:var(--earth-100);-webkit-font-smoothing:antialiased;}
.glass-card{background:rgba(45,66,64,.45);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(155,186,178,.15);}
.glass-card:hover{border-color:rgba(155,186,178,.35);background:rgba(45,66,64,.55);}
.nav-link{position:relative;}
.nav-link::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--earth-300);transition:width .3s ease;}
.nav-link:hover::after,.nav-link.active::after{width:100%;}
.btn-primary{background:var(--earth-400);color:var(--earth-950);font-weight:500;transition:background .2s;}
.btn-primary:hover{background:var(--earth-300);}
.btn-ghost{border:1px solid rgba(64,101,93,.5);color:var(--earth-200);transition:all .2s;}
.btn-ghost:hover{background:rgba(45,66,64,.5);border-color:var(--earth-400);}
.input-base{background:rgba(15,26,25,.6);border:1px solid rgba(53,82,76,.4);color:var(--earth-100);}
.input-base:focus{outline:none;border-color:var(--earth-400);}
.section-pad{padding-top:3.5rem;padding-bottom:3.5rem;}
@media(min-width:768px){.section-pad{padding-top:5rem;padding-bottom:5rem;}}
.hero-glow{position:absolute;inset:0;overflow:hidden;pointer-events:none;}
.hover-lift{transition:transform .3s ease,border-color .3s ease;}
.hover-lift:hover{transform:translateY(-4px);}