/* ==========================================================================
   Case study detail pages — "project dossier" layout
   Loaded after css/effects.css on the five case-study-*.html pages only.
   ========================================================================== */

/* ---------- Hero ---------- */
@keyframes csKen { from { transform: scale(1.02); } to { transform: scale(1.14); } }

.cs-hero {
    position: relative;
    overflow: hidden;
    padding: 90px 0 170px;
    color: #fff;
    background: #001248;
}
.cs-hero-bg {
    position: absolute; inset: 0;
    background-size: cover;
    background-position: center;
    animation: csKen 22s ease-out both;
}
.cs-hero::before {
    content: "";
    position: absolute; inset: 0;
    z-index: 1;
    background: linear-gradient(105deg, rgba(0, 14, 60, .95) 0%, rgba(0, 18, 72, .82) 55%, rgba(0, 18, 72, .6) 100%);
}
.cs-hero::after {                       /* blueprint grid + orange glow */
    content: "";
    position: absolute; inset: 0;
    z-index: 1;
    background-image:
        radial-gradient(circle at 92% 8%, rgba(255, 94, 21, .35), transparent 38%),
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: auto, 44px 44px, 44px 44px;
    pointer-events: none;
}
.cs-hero > .container { position: relative; z-index: 2; }

.cs-crumb .breadcrumb-item, .cs-crumb .breadcrumb-item a { color: rgba(255, 255, 255, .8); font-size: .95rem; }
.cs-crumb .breadcrumb-item a:hover { color: var(--bs-secondary); }
.cs-crumb .breadcrumb-item.active { color: var(--bs-secondary); }
.cs-crumb .breadcrumb-item + .breadcrumb-item::before { color: rgba(255, 255, 255, .5); }

.cs-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.cs-kicker, .cs-tag {
    display: inline-flex; align-items: center;
    padding: 7px 16px;
    border-radius: 50px;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.cs-kicker { background: var(--bs-secondary); color: #fff; }
.cs-tag { border: 1px solid rgba(255, 255, 255, .45); background: rgba(255, 255, 255, .08); color: #fff; }

.cs-title {
    max-width: 920px;
    margin-bottom: 20px;
    font-size: clamp(1.9rem, 4.2vw, 3.3rem);
    line-height: 1.18;
    color: #fff;
    text-shadow: 0 4px 24px rgba(0, 0, 0, .35);
}
.cs-title::after {
    content: "";
    display: block;
    width: 90px; height: 4px;
    margin-top: 22px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--bs-secondary), #ffb27a);
}
.cs-lead { max-width: 780px; margin: 0; font-size: 1.18rem; line-height: 1.75; color: rgba(255, 255, 255, .88); }

/* ---------- Fact bar (overlaps the hero) ---------- */
.cs-factbar-wrap { position: relative; z-index: 5; margin-top: -95px; }
.cs-factbar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 26px 60px rgba(0, 18, 72, .22);
    border-top: 4px solid var(--bs-secondary);
    overflow: hidden;
}
.cs-fact {
    display: flex; gap: 14px; align-items: flex-start;
    padding: 26px 24px;
    border-right: 1px solid rgba(0, 18, 72, .08);
    transition: background .3s;
}
.cs-fact:last-child { border-right: 0; }
.cs-fact:hover { background: rgba(255, 94, 21, .05); }
.cs-fact-ic {
    flex: 0 0 46px; width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 12px;
    background: rgba(255, 94, 21, .12);
    color: var(--bs-secondary);
    transition: .4s;
}
.cs-fact:hover .cs-fact-ic { background: var(--bs-secondary); color: #fff; transform: rotate(-8deg) scale(1.08); }
.cs-fact small { display: block; margin-bottom: 4px; font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--bs-secondary); }
.cs-fact p { margin: 0; font-size: .95rem; font-weight: 600; line-height: 1.45; color: var(--bs-dark); }

/* ---------- Layout ---------- */
.cs-main { padding: 70px 0 40px; background: #fff; }

/* sticky table of contents */
.cs-side { position: sticky; top: 112px; max-height: calc(100vh - 130px); overflow-y: auto; padding-right: 4px; scrollbar-width: thin; }
.cs-side-title { margin-bottom: 14px; font-size: .78rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--bs-secondary); }
.cs-toc ul { position: relative; margin: 0; padding: 0 0 0 16px; list-style: none; border-left: 2px solid rgba(0, 18, 72, .12); }
.cs-toc-progress {
    position: absolute; left: -2px; top: 0;
    width: 2px; height: var(--p, 0%);
    background: var(--bs-secondary);
    transition: height .25s linear;
}
.cs-toc a {
    display: flex; gap: 10px; align-items: baseline;
    padding: 6px 0;
    font-size: .9rem;
    color: #5a6483;
    transition: .25s;
}
.cs-toc a .n { min-width: 22px; font-weight: 700; color: rgba(0, 18, 72, .3); transition: .25s; }
.cs-toc a .t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cs-toc a:hover { color: var(--bs-dark); transform: translateX(3px); }
.cs-toc a.done .n { color: var(--bs-secondary); opacity: .6; }
.cs-toc a.active { color: var(--bs-secondary); font-weight: 600; }
.cs-toc a.active .n { color: var(--bs-secondary); opacity: 1; }

.cs-side-cta {
    margin-top: 26px;
    padding: 22px;
    border-radius: 16px;
    background: linear-gradient(135deg, #001248, #00256f);
    color: #fff;
}
.cs-side-cta p { margin-bottom: 14px; font-family: "Playfair Display", serif; font-size: 1.15rem; line-height: 1.4; }

/* snapshot panel */
.cs-snapshot {
    margin-bottom: 3.5rem;
    padding: 28px 30px 24px;
    border-radius: 20px;
    background: #f6f7fb;
    border: 1px solid rgba(0, 18, 72, .08);
}
.cs-snap-title { margin-bottom: 20px; font-size: .8rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--bs-dark); }
.cs-snap-title i { color: var(--bs-secondary); }
.cs-snap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 34px; }
.cs-snap-item small, .cs-scope small { display: block; margin-bottom: 4px; font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--bs-secondary); }
.cs-snap-item p { margin: 0; font-weight: 600; color: var(--bs-dark); line-height: 1.5; }
.cs-scope { margin-top: 24px; padding-top: 20px; border-top: 1px dashed rgba(0, 18, 72, .18); }
.cs-scope div { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.cs-scope span {
    padding: 6px 14px;
    border-radius: 50px;
    background: #fff;
    border: 1px solid rgba(255, 94, 21, .4);
    font-size: .88rem; font-weight: 500;
    color: #b63c00;
    transition: .3s;
}
.cs-scope span:hover { background: var(--bs-secondary); color: #fff; transform: translateY(-2px); }

/* ---------- Sections ---------- */
.cs-section { margin-bottom: 3.6rem; padding-bottom: 3.2rem; border-bottom: 1px dashed rgba(0, 18, 72, .16); }
.cs-section:last-child { border-bottom: 0; }
.cs-sec-head { display: flex; align-items: center; gap: 20px; margin-bottom: 26px; }
.cs-num {
    font-family: "Playfair Display", serif;
    font-size: 3.6rem; font-weight: 700; line-height: 1;
    color: transparent;
    -webkit-text-stroke: 2px var(--bs-secondary);
    flex: 0 0 auto;
}
.cs-sec-head h2 { margin: 0; font-size: clamp(1.4rem, 2.4vw, 1.95rem); line-height: 1.25; color: var(--bs-dark); }
.cs-p { margin-bottom: 1.1rem; font-size: 1.04rem; line-height: 1.85; color: #4a5372; }
.cs-p:last-child { margin-bottom: 0; }
.cs-note { margin: 22px 0 0; font-size: 1.04rem; line-height: 1.8; color: #4a5372; }
.cs-caption { margin: 12px 0 1.2rem; text-align: center; font-size: .85rem; font-style: italic; color: #7a83a0; }

.cs-quote {
    position: relative;
    margin: 0 0 1.5rem;
    padding: 24px 28px 24px 62px;
    border-left: 4px solid var(--bs-secondary);
    border-radius: 0 16px 16px 0;
    background: linear-gradient(90deg, rgba(255, 94, 21, .09), rgba(255, 94, 21, 0));
}
.cs-quote i { position: absolute; left: 22px; top: 24px; font-size: 1.5rem; color: var(--bs-secondary); opacity: .75; }
.cs-quote p { margin: 0; font-family: "Playfair Display", serif; font-size: 1.28rem; font-style: italic; line-height: 1.6; color: var(--bs-dark); }

/* tiles */
.cs-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; margin: 4px 0 6px; }
.cs-tile {
    display: flex; gap: 16px;
    padding: 22px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid rgba(0, 18, 72, .09);
    box-shadow: 0 6px 22px rgba(0, 18, 72, .06);
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s;
}
.cs-tile:hover { transform: translateY(-6px); box-shadow: 0 18px 34px rgba(0, 18, 72, .13); border-color: rgba(255, 94, 21, .5); }
.cs-tile-n {
    flex: 0 0 44px; width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bs-secondary);
    color: #fff; font-weight: 700; font-size: .95rem;
    box-shadow: 0 8px 16px rgba(255, 94, 21, .3);
}
.cs-tile em { display: block; margin-bottom: 2px; font-style: normal; font-size: .7rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--bs-secondary); }
.cs-tile h5 { margin-bottom: 6px; font-size: 1.05rem; line-height: 1.35; color: var(--bs-dark); }
.cs-tile p { margin: 0; font-size: .94rem; line-height: 1.65; color: #5a6483; }

/* challenge -> response pairs */
.cs-pairs { display: flex; flex-direction: column; gap: 18px; margin: 4px 0 6px; }
.cs-pair { display: grid; grid-template-columns: 1fr 54px 1fr; align-items: stretch; }
.cs-pair-a, .cs-pair-b { padding: 22px 24px; border-radius: 16px; transition: transform .35s ease, box-shadow .35s ease; }
.cs-pair:hover .cs-pair-a, .cs-pair:hover .cs-pair-b { box-shadow: 0 16px 30px rgba(0, 18, 72, .14); }
.cs-pair-a { background: #f3f4f9; border-top: 4px solid var(--bs-secondary); }
.cs-pair-b { padding-top: 26px; background: linear-gradient(135deg, #001248, #00266f); color: #fff; }
.cs-pair em { display: block; margin-bottom: 6px; font-style: normal; font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }
.cs-pair-a em { color: var(--bs-secondary); }
.cs-pair-b em { color: #ffb27a; }
.cs-pair h5 { margin-bottom: 8px; font-size: 1.08rem; line-height: 1.35; }
.cs-pair-a h5 { color: var(--bs-dark); }
.cs-pair-b h5 { color: #fff; }
.cs-pair p { margin: 0; font-size: .94rem; line-height: 1.65; }
.cs-pair-a p { color: #5a6483; }
.cs-pair-b p { color: rgba(255, 255, 255, .82); }
.cs-pair-arrow {
    align-self: center; justify-self: center;
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bs-secondary);
    color: #fff;
    box-shadow: 0 8px 18px rgba(255, 94, 21, .4);
    z-index: 2;
    transition: transform .4s;
}
.cs-pair:hover .cs-pair-arrow { transform: scale(1.15) translateX(3px); }

/* process flow */
.cs-flow {
    display: grid;
    grid-template-columns: repeat(var(--n, 5), 1fr);
    margin: 14px 0 0; padding: 30px 10px 24px;
    list-style: none;
    border-radius: 18px;
    background: #f6f7fb;
    border: 1px solid rgba(0, 18, 72, .08);
}
.cs-flow-step { position: relative; padding: 0 8px; text-align: center; }
.cs-flow-step::after {                  /* connector line, drawn on scroll-in */
    content: "";
    position: absolute; top: 25px; left: calc(50% + 32px);
    width: calc(100% - 64px); height: 0;
    border-top: 3px dashed rgba(255, 94, 21, .55);
    transform: scaleX(0); transform-origin: 0 50%;
    transition: transform .6s ease;
}
.cs-flow.in-view .cs-flow-step::after { transform: scaleX(1); }
.cs-flow-step:last-child::after { display: none; }
.cs-flow-n {
    position: relative; z-index: 1;
    width: 52px; height: 52px; margin: 0 auto 12px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: #fff; color: var(--bs-dark);
    border: 3px solid rgba(0, 18, 72, .15);
    font-weight: 700;
    transition: .5s;
}
.cs-flow.in-view .cs-flow-n { background: var(--bs-secondary); border-color: var(--bs-secondary); color: #fff; box-shadow: 0 8px 18px rgba(255, 94, 21, .35); }
.cs-flow-step:nth-child(2) .cs-flow-n, .cs-flow-step:nth-child(2)::after { transition-delay: .15s; }
.cs-flow-step:nth-child(3) .cs-flow-n, .cs-flow-step:nth-child(3)::after { transition-delay: .3s; }
.cs-flow-step:nth-child(4) .cs-flow-n, .cs-flow-step:nth-child(4)::after { transition-delay: .45s; }
.cs-flow-step:nth-child(5) .cs-flow-n, .cs-flow-step:nth-child(5)::after { transition-delay: .6s; }
.cs-flow-step:nth-child(6) .cs-flow-n, .cs-flow-step:nth-child(6)::after { transition-delay: .75s; }
.cs-flow-step:nth-child(7) .cs-flow-n, .cs-flow-step:nth-child(7)::after { transition-delay: .9s; }
.cs-flow-step b { display: block; font-size: .95rem; line-height: 1.3; color: var(--bs-dark); }
.cs-flow-step small { display: block; margin-top: 4px; font-size: .68rem; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--bs-secondary); }

/* liner build-up (cross-section) */
.cs-layers { display: flex; flex-direction: column; margin: 8px 0 0; border-radius: 16px; overflow: hidden; box-shadow: 0 10px 28px rgba(0, 18, 72, .14); }
.cs-layer {
    display: flex; flex-wrap: wrap; gap: 6px 22px; align-items: center;
    padding: 18px 26px;
    opacity: 0; transform: translateY(-14px);
    transition: opacity .5s ease, transform .5s ease, padding .3s;
}
.cs-layers.in-view .cs-layer { opacity: 1; transform: none; }
.cs-layers.in-view .cs-layer-2 { transition-delay: .15s; }
.cs-layers.in-view .cs-layer-3 { transition-delay: .3s; }
.cs-layers.in-view .cs-layer-4 { transition-delay: .45s; }
.cs-layer:hover { padding-left: 34px; }
.cs-layer b { flex: 0 0 250px; font-size: 1rem; }
.cs-layer span { flex: 1 1 220px; font-size: .93rem; opacity: .9; }
.cs-layer-1 { background: repeating-linear-gradient(135deg, #d9c7a3 0 10px, #cfbb95 10px 20px); color: #3b2f1a; }
.cs-layer-2 { background: #1b1f2e; color: #fff; }
.cs-layer-3 { background: #eceef3; color: #2b3350; }
.cs-layer-4 { background: repeating-linear-gradient(45deg, #7a5a3a 0 12px, #6d4f33 12px 24px); color: #fff; }

/* result banner */
.cs-result {
    position: relative; overflow: hidden;
    display: flex; gap: 22px; align-items: center;
    margin-top: 26px; padding: 30px 32px;
    border-radius: 20px;
    background: linear-gradient(120deg, #001248 0%, #00337f 100%);
    color: #fff;
    box-shadow: 0 20px 44px rgba(0, 18, 72, .28);
}
.cs-result::before {
    content: "";
    position: absolute; top: 0; left: -60%;
    width: 40%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .14), transparent);
    transform: skewX(-20deg);
}
.cs-result.in-view::before { animation: csShine 2.4s ease .3s 1 both; }
@keyframes csShine { from { left: -60%; } to { left: 140%; } }
.cs-result-icon {
    flex: 0 0 68px; width: 68px; height: 68px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bs-secondary);
    font-size: 1.6rem;
    box-shadow: 0 10px 22px rgba(255, 94, 21, .5);
}
.cs-result-label { margin: 0 0 6px; font-size: .78rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: #ffb27a; }
.cs-result-text { margin: 0; font-family: "Playfair Display", serif; font-size: 1.3rem; line-height: 1.6; }

/* engineering value */
.cs-values { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin: 8px 0 0; padding: 0; list-style: none; }
.cs-values li {
    display: flex; align-items: center; gap: 14px;
    padding: 16px 18px;
    border-radius: 14px;
    background: #f6f7fb;
    border: 1px solid transparent;
    transition: .3s;
}
.cs-values li:hover { background: #fff; border-color: rgba(255, 94, 21, .5); box-shadow: 0 10px 24px rgba(0, 18, 72, .1); transform: translateY(-3px); }
.cs-values li span {
    flex: 0 0 38px; width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 10px;
    background: rgba(255, 94, 21, .14);
    color: var(--bs-secondary);
    font-weight: 700; font-size: .9rem;
    transition: .3s;
}
.cs-values li:hover span { background: var(--bs-secondary); color: #fff; }
.cs-values li p { margin: 0; font-weight: 600; line-height: 1.45; color: var(--bs-dark); }

/* ---------- CTA + previous / next ---------- */
.cs-cta {
    position: relative; overflow: hidden;
    padding: 80px 0;
    background: linear-gradient(135deg, #001248 0%, #00256f 100%);
}
.cs-cta::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        radial-gradient(circle at 12% 110%, rgba(255, 94, 21, .4), transparent 40%),
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: auto, 44px 44px, 44px 44px;
}
.cs-nav-wrap { padding: 60px 0 80px; background: #f6f7fb; }
.cs-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.cs-nav-card {
    position: relative; overflow: hidden; isolation: isolate;
    display: flex; flex-direction: column; justify-content: flex-end;
    min-height: 230px; padding: 28px 30px;
    border-radius: 20px;
    background-size: cover; background-position: center;
    color: #fff;
    transition: transform .4s ease, box-shadow .4s ease;
}
.cs-nav-card::before {
    content: "";
    position: absolute; inset: 0; z-index: -1;
    background: linear-gradient(180deg, rgba(0, 18, 72, .35), rgba(0, 18, 72, .92));
    transition: background .4s;
}
.cs-nav-card:hover { color: #fff; transform: translateY(-6px); box-shadow: 0 22px 44px rgba(0, 18, 72, .3); }
.cs-nav-card:hover::before { background: linear-gradient(180deg, rgba(255, 94, 21, .35), rgba(0, 18, 72, .92)); }
.cs-nav-card small { font-size: .74rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: #ffb27a; }
.cs-nav-card h4 { margin: 6px 0 4px; font-size: 1.2rem; line-height: 1.35; color: #fff; }
.cs-nav-card em { font-style: normal; font-size: .88rem; color: rgba(255, 255, 255, .75); }
.cs-nav-dir {
    position: absolute; top: 22px;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bs-secondary);
    transition: transform .4s;
}
.cs-prev .cs-nav-dir { left: 26px; }
.cs-next .cs-nav-dir { right: 26px; }
.cs-next { text-align: right; }
.cs-prev:hover .cs-nav-dir { transform: translateX(-6px); }
.cs-next:hover .cs-nav-dir { transform: translateX(6px); }

/* ---------- Responsive ---------- */
@media (max-width: 1199px) {
    .cs-factbar { grid-template-columns: repeat(2, 1fr); }
    .cs-fact:nth-child(2) { border-right: 0; }
    .cs-fact:nth-child(-n+2) { border-bottom: 1px solid rgba(0, 18, 72, .08); }
}
@media (max-width: 991px) {
    .cs-hero { padding: 60px 0 150px; }
    .cs-main { padding-top: 50px; }
    .cs-pair { grid-template-columns: 1fr; gap: 0; }
    .cs-pair-arrow { margin: -8px 0; transform: rotate(90deg); }
    .cs-pair:hover .cs-pair-arrow { transform: rotate(90deg) scale(1.15); }
    .cs-flow { grid-template-columns: 1fr; gap: 6px; padding: 22px 20px; }
    .cs-flow-step { display: grid; grid-template-columns: 52px 1fr; column-gap: 16px; align-items: center; text-align: left; padding: 8px 0; }
    .cs-flow-n { grid-row: span 2; margin: 0; }
    .cs-flow-step::after { display: none; }
}
@media (max-width: 767px) {
    .cs-factbar { grid-template-columns: 1fr; }
    .cs-fact { border-right: 0; border-bottom: 1px solid rgba(0, 18, 72, .08); }
    .cs-fact:last-child { border-bottom: 0; }
    .cs-factbar-wrap { margin-top: -80px; }
    .cs-snap-grid { grid-template-columns: 1fr; }
    .cs-sec-head { gap: 14px; }
    .cs-num { font-size: 2.6rem; }
    .cs-quote { padding: 20px 20px 20px 52px; }
    .cs-quote p { font-size: 1.12rem; }
    .cs-result { flex-direction: column; text-align: center; padding: 26px 22px; }
    .cs-layer b { flex-basis: 100%; }
    .cs-nav { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Case studies LISTING page (case-studies.html)
   ========================================================================== */
.csl-wrap { position: relative; background: #fff; }

/* stat strip */
.csl-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-bottom: 3.2rem;
    border-radius: 20px;
    background: linear-gradient(135deg, #001248 0%, #00256f 100%);
    box-shadow: 0 20px 44px rgba(0, 18, 72, .18);
    overflow: hidden;
}
.csl-stat {
    padding: 26px 20px;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, .12);
}
.csl-stat:last-child { border-right: 0; }
.csl-stat b { display: block; margin-bottom: 4px; font-family: "Playfair Display", serif; font-size: 2.1rem; color: var(--bs-secondary); }
.csl-stat span { font-size: .8rem; font-weight: 600; letter-spacing: .5px; color: rgba(255, 255, 255, .85); }

/* shared: tag / meta / excerpt / cta pieces */
.csl-tag {
    display: inline-flex; align-items: center;
    width: fit-content;
    margin-bottom: 14px;
    padding: 6px 14px;
    border-radius: 50px;
    background: rgba(255, 94, 21, .12);
    color: #b63c00;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
}
.csl-meta { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-bottom: 14px; }
.csl-meta span { display: inline-flex; align-items: center; gap: 7px; font-size: .88rem; font-weight: 600; color: #5a6483; }
.csl-meta i { color: var(--bs-secondary); }
.csl-excerpt { display: block; margin-bottom: 18px; font-size: .96rem; line-height: 1.7; color: #5a6483; }
.csl-cta {
    display: inline-flex; align-items: center; gap: 10px;
    margin-top: auto;
    font-weight: 700;
    color: var(--bs-dark);
    transition: gap .3s, color .3s;
}
.csl-cta i { transition: transform .35s; color: var(--bs-secondary); }

/* ---- featured (first) card ---- */
.csl-feature {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    margin-bottom: 2.5rem;
    border-radius: 26px;
    overflow: hidden;
    text-decoration: none;
    background: #fff;
    box-shadow: 0 22px 50px rgba(0, 18, 72, .14);
    border: 1px solid rgba(0, 18, 72, .06);
    transition: box-shadow .4s ease, transform .4s ease;
}
.csl-feature:hover { color: inherit; transform: translateY(-4px); box-shadow: 0 30px 64px rgba(0, 18, 72, .22); }
.csl-feature-img {
    position: relative;
    min-height: 420px;
    background-size: cover;
    background-position: center;
    transform: scale(1.03);
    transition: transform .8s ease;
}
.csl-feature:hover .csl-feature-img { transform: scale(1.1); }
.csl-feature-img::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent 55%, rgba(255, 255, 255, .04));
}
.csl-feature-body { display: flex; flex-direction: column; padding: 44px 46px 40px; }
.csl-feature .csl-num {
    position: static;
    align-self: flex-start;
    margin-bottom: 10px;
    font-family: "Playfair Display", serif;
    font-size: 1rem; font-weight: 700;
    letter-spacing: 2px;
    color: var(--bs-secondary);
}
.csl-feature .csl-num::before { content: "PROJECT "; }
.csl-title { margin-bottom: 16px; font-size: clamp(1.4rem, 2.2vw, 1.85rem); line-height: 1.3; color: var(--bs-dark); }
.csl-feature .csl-excerpt { font-size: 1.02rem; }
.csl-result {
    display: flex; align-items: center;
    margin-bottom: 22px; padding: 14px 18px;
    border-radius: 12px;
    background: #f3f4f9;
    border-left: 3px solid var(--bs-secondary);
    font-size: .9rem; font-weight: 600;
    color: var(--bs-dark);
}
.csl-result i { color: var(--bs-secondary); }
.csl-feature .csl-cta { font-size: 1.02rem; }
.csl-feature:hover .csl-cta { gap: 15px; color: var(--bs-secondary); }

/* ---- grid cards (rest) ---- */
.csl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.csl-card {
    display: flex; flex-direction: column;
    border-radius: 22px;
    overflow: hidden;
    text-decoration: none;
    background: #fff;
    border: 1px solid rgba(0, 18, 72, .07);
    box-shadow: 0 12px 30px rgba(0, 18, 72, .08);
    transition: transform .4s ease, box-shadow .4s ease, border-color .4s;
}
.csl-card:hover { color: inherit; transform: translateY(-6px); box-shadow: 0 26px 50px rgba(0, 18, 72, .18); border-color: rgba(255, 94, 21, .4); }
.csl-card-img {
    position: relative;
    height: 220px;
    background-size: cover;
    background-position: center;
    transform: scale(1.02);
    transition: transform .7s ease;
}
.csl-card:hover .csl-card-img { transform: scale(1.1); }
.csl-card-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 18, 72, 0) 55%, rgba(0, 18, 72, .55)); }
.csl-card .csl-num {
    position: absolute; right: 16px; bottom: 12px; z-index: 1;
    font-family: "Playfair Display", serif;
    font-size: 1.8rem; font-weight: 700;
    color: rgba(255, 255, 255, .85);
}
.csl-card-body { display: flex; flex-direction: column; flex: 1; padding: 26px 28px 28px; }
.csl-card-title { margin-bottom: 14px; font-size: 1.18rem; line-height: 1.4; color: var(--bs-dark); }
.csl-card:hover .csl-cta { gap: 14px; color: var(--bs-secondary); }
.csl-card:hover .csl-cta i { transform: translateX(4px); }

@media (max-width: 991px) {
    .csl-stats { grid-template-columns: repeat(2, 1fr); }
    .csl-stat:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, .12); }
    .csl-feature { grid-template-columns: 1fr; }
    .csl-feature-img { min-height: 260px; }
    .csl-feature-body { padding: 32px 28px; }
    .csl-grid { grid-template-columns: 1fr; }
}
@media (max-width: 575px) {
    .csl-stats { grid-template-columns: 1fr 1fr; }
}