.problem-section{background:var(--color-black);color:var(--color-white)}.problem-section .section-header{border-bottom:none;padding-bottom:0}.problem-section .section-number{color:var(--color-lime)}.problem-intro{border-bottom:1px solid hsla(0,0%,100%,.1);padding:20px 40px 60px}.problem-headline{font-size:clamp(36px,5vw,56px);font-weight:700;letter-spacing:-.02em;line-height:1.1;max-width:800px}.problem-headline .strike{color:var(--color-muted);text-decoration:line-through}.problem-stats{display:grid;grid-template-columns:repeat(3,1fr)}.problem-stat{border-bottom:1px solid hsla(0,0%,100%,.1);border-right:1px solid hsla(0,0%,100%,.1);cursor:pointer;padding:60px 40px;transition:background .3s}.problem-stat:last-child{border-right:none}.problem-stat:hover{background:hsla(0,0%,100%,.05)}.problem-stat-value{font-size:clamp(56px,10vw,100px);font-weight:700;letter-spacing:-.03em;line-height:1;margin-bottom:16px;transition:transform .3s}.problem-stat:hover .problem-stat-value{transform:scale(1.05)}.problem-stat-value .accent{color:var(--color-lime)}.problem-stat-label{font-size:18px;font-weight:600;margin-bottom:8px}.problem-stat-desc{color:var(--color-muted);font-size:16px;line-height:1.6}.problem-stat-waste{background:var(--color-lime);color:var(--color-black);display:inline-block;font-family:var(--font-mono);font-size:11px;margin-top:12px;padding:6px 12px}@media (max-width:1024px){.problem-stats{grid-template-columns:1fr}.problem-stat{border-right:none}}@media (max-width:768px){.problem-intro{padding:16px 20px 40px}.problem-headline{font-size:clamp(28px,7vw,40px)}.problem-stats{grid-template-columns:1fr;position:relative}.problem-stat{background:var(--color-black);border-right:none;box-shadow:0 10px 30px rgba(0,0,0,.3);padding:40px 20px;position:sticky;top:70px;z-index:1}.problem-stat:first-child{z-index:1}.problem-stat:nth-child(2){z-index:2}.problem-stat:nth-child(3){z-index:3}.problem-stat-value{font-size:clamp(48px,15vw,72px)}.problem-stat-label{font-size:16px}.problem-stat-desc{font-size:13px}.problem-stat:before{background:linear-gradient(180deg,rgba(0,0,0,.15),transparent);content:"";height:20px;left:0;pointer-events:none;position:absolute;right:0;top:0;z-index:10}.problem-stat{border-top:1px solid hsla(0,0%,100%,.1)}}