.key-diff{background:#f4f7fb;scroll-margin-top:5.5rem}.key-diff-title{letter-spacing:.08em}.key-diff-grid{grid-template-columns:1fr;gap:1rem;display:grid}.key-diff-card{background:#fff;border-top:3px solid #c6a15a;padding:1.5rem 1.35rem 1.4rem;position:relative;overflow:hidden;box-shadow:0 10px 24px #1018280d}.key-diff-index{color:#16324f14;font-size:3.4rem;font-weight:700;line-height:1;position:absolute;top:.35rem;right:.8rem}.key-diff-icon{background:var(--brand-primary);color:#fff;width:3rem;height:3rem;font-size:1.15rem}.key-diff-icon svg{width:1.2rem;height:1.2rem}.key-diff-card-title{letter-spacing:.05em;max-width:16rem;font-size:.92rem;line-height:1.4}@media (min-width:768px){.key-diff-grid{grid-template-columns:repeat(min(2, var(--cols,2)), minmax(0, 1fr))}}@media (min-width:1200px){.key-diff-grid{grid-template-columns:repeat(min(4, var(--cols,4)), minmax(0, 1fr))}}
.complexity{scroll-margin-top:5.5rem}.complexity-mark{background:#e36a1e;flex:none;width:1.35rem;height:1.35rem;margin-top:.2rem}.complexity-title{color:var(--brand-primary);letter-spacing:.04em;font-size:clamp(1.05rem,1.7vw,1.45rem)}.complexity-intro{max-width:40rem}.complexity-chart{grid-template-rows:32rem auto auto;grid-template-columns:1.4rem 2.75rem minmax(0,1fr);column-gap:.35rem}.complexity-axis-name,.complexity-x-name,.complexity-scale,.complexity-x{color:var(--brand-muted);letter-spacing:.08em;text-transform:uppercase;font-size:.72rem;font-weight:600}.complexity-axis-name{writing-mode:vertical-rl;grid-area:1/1;place-self:center;transform:rotate(180deg)}.complexity-scale{flex-direction:column;grid-area:1/2;justify-content:space-between;align-items:flex-end;padding:.15rem 0;display:flex}.complexity-plot{border-bottom:2px solid var(--brand-primary);border-left:2px solid var(--brand-primary);background:linear-gradient(90deg,#16324f14 1px,#0000 1px) 0 0/33.33% 100%,linear-gradient(0deg,#16324f14 1px,#0000 1px) 0 0/100% 33.33%,#f7f9fb;grid-area:1/3;position:relative}.complexity-bubble{color:#fff;letter-spacing:.01em;text-align:center;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:.2rem;padding:.75rem;font-size:.68rem;font-weight:600;line-height:1.2;display:flex;position:absolute;transform:translate(-50%,-50%);box-shadow:0 12px 24px #10182829}.complexity-bubble i{font-size:1rem}.complexity-bubble span{max-width:7.4rem}.complexity-bubble-infrastructure{background:#1f8a4c}.complexity-bubble-railway{background:#1a56a5}.complexity-bubble-pmc{background:#e36a1e}.complexity-bubble-bridges{background:#5e6772}.complexity-bubble-large{background:#16324f}.complexity-x{grid-area:2/3;justify-content:space-between;align-items:center;padding-top:.55rem;display:flex}.complexity-x-name{text-align:center;grid-area:3/3;margin-top:.15rem}.complexity-step+.complexity-step{margin-top:1.1rem}.complexity-step-label{font-size:.92rem;font-weight:600}.complexity-step-icon-infrastructure{color:#1f8a4c}.complexity-step-icon-railway{color:#1a56a5}.complexity-step-icon-pmc{color:#e36a1e}.complexity-step-icon-bridges{color:#5e6772}.complexity-step-icon-large{color:#16324f}.complexity-track{background:#e7edf2;border-radius:999px;height:.55rem;overflow:hidden}.complexity-fill{border-radius:inherit;height:100%;display:block}.complexity-fill-infrastructure{background:#1f8a4c}.complexity-fill-railway{background:#1a56a5}.complexity-fill-pmc{background:#e36a1e}.complexity-fill-bridges{background:#5e6772}.complexity-fill-large{background:#16324f}