*{box-sizing:border-box}
:root{--navy:#172b58;--blue:#08a6df;--ink:#5a6579;--paper:#f3f5f8;--line:#e6e9f0}
body{margin:0;font-family:Manrope,-apple-system,sans-serif;background-color:var(--paper);background-image:linear-gradient(rgba(244,246,249,.72),rgba(238,241,245,.78)),url('../assets/landing/concrete.jpg');background-position:center top;background-size:cover;background-attachment:fixed;color:var(--navy);overflow-x:hidden}
.cs-wrap{max-width:1320px;margin:0 auto;padding:0 max(5vw,24px)}
a{color:inherit}
/* hero */
.cs-hero{padding:180px 0 60px;background:linear-gradient(135deg,#15254b,#28407a);color:#fff}
.cs-hero__crumb{display:flex;gap:8px;align-items:center;color:#9fb6e0;font-size:12px;font-weight:800;letter-spacing:1px;text-transform:uppercase;margin-bottom:22px}
.cs-hero__crumb a{color:#9fb6e0;text-decoration:none}.cs-hero__crumb a:hover{color:#fff}
.cs-chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:18px}
.cs-chip{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.4px}
.cs-chip--cat{background:rgba(255,255,255,.14);color:#dbe7fb}
.cs-chip--year{background:#65d7f7;color:#08243b}
.cs-hero h1{margin:6px 0 14px;font-size:clamp(34px,5vw,68px);font-weight:800;line-height:1;letter-spacing:-.04em;max-width:16ch}
.cs-hero__sub{max-width:720px;color:#cdd8ee;font-size:clamp(16px,1.4vw,20px);line-height:1.6}
/* index hero */
.cs-index-hero{padding:180px 0 40px;background:linear-gradient(135deg,#15254b,#28407a);color:#fff}
.cs-index-hero span{color:#65d7f7;font-size:13px;font-weight:800;letter-spacing:2.4px;text-transform:uppercase}
.cs-index-hero h1{margin:14px 0 16px;font-size:clamp(40px,6vw,88px);font-weight:800;line-height:.98;letter-spacing:-.045em}
.cs-index-hero p{max-width:680px;color:#cdd8ee;font-size:clamp(16px,1.4vw,20px);line-height:1.65}
.cs-stat-row{display:flex;gap:34px;flex-wrap:wrap;margin-top:34px}
.cs-stat-row div strong{display:block;font-size:34px;font-weight:800;letter-spacing:-.03em}
.cs-stat-row div span{color:#9fb6e0;font-size:13px;font-weight:700}
/* filters */
.cs-filters{position:sticky;top:0;z-index:20;background:rgba(243,245,248,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:16px 0}
.cs-filters__row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.cs-filters__label{font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;color:var(--ink);margin-right:4px}
.cs-fbtn{appearance:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 15px;font:800 12px Manrope;color:var(--navy);cursor:pointer;transition:.2s}
.cs-fbtn:hover{border-color:var(--blue)}
.cs-fbtn.is-active{background:var(--navy);color:#fff;border-color:var(--navy)}
/* grid */
.cs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:44px 0 80px}
.cs-card{display:flex;flex-direction:column;background:rgba(255,255,255,.94);border:1px solid rgba(214,219,227,.9);border-radius:20px;padding:26px;text-decoration:none;transition:transform .3s ease,box-shadow .3s ease,border-color .3s;min-height:290px;box-shadow:0 8px 22px rgba(35,48,72,.05)}
.cs-card:hover{transform:translateY(-5px);box-shadow:0 24px 54px rgba(16,32,70,.12);border-color:transparent}
.cs-card__top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.cs-card__cat{font-size:11px;font-weight:800;letter-spacing:.8px;text-transform:uppercase;color:var(--blue)}
.cs-card__year{font-size:12px;font-weight:800;color:var(--ink);background:var(--paper);padding:5px 10px;border-radius:999px}
.cs-card__brand{height:56px;display:flex;align-items:center;margin:0 0 16px}
.cs-card__brand img{display:block;max-width:126px;max-height:52px;width:auto;height:auto;object-fit:contain}
.cs-featured{padding:58px 0 64px;background:rgba(255,255,255,.58);backdrop-filter:blur(1px);border-bottom:1px solid var(--line)}
.cs-featured__heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
.cs-featured__heading>div>span{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase}
.cs-featured__heading h2{margin:8px 0 0;font-size:clamp(30px,4vw,52px);letter-spacing:-.04em;line-height:1}
.cs-featured__heading p{max-width:520px;margin:0;color:var(--ink);line-height:1.65}
.cs-featured__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cs-featured-card{overflow:hidden;display:flex;flex-direction:column;min-height:350px;border:1px solid var(--line);border-radius:20px;background:var(--paper);text-decoration:none;transition:transform .25s ease,box-shadow .25s ease}
.cs-featured-card:hover{transform:translateY(-4px);box-shadow:0 20px 48px rgba(16,32,70,.12)}
.cs-featured-card__media{position:relative;display:grid;place-items:center;height:145px;padding:14px;background:#fff;overflow:hidden}
.cs-featured-card__media>span{position:absolute;right:12px;top:12px;padding:6px 10px;border-radius:999px;background:rgba(23,43,88,.9);color:#fff;font-size:10px;font-weight:800;text-transform:uppercase}
.cs-featured__visual{max-width:150px;max-height:78px;object-fit:contain}
.cs-featured__visual--project{width:100%;max-width:none;max-height:none;height:100%;object-fit:cover;border-radius:12px}
.cs-featured-card__body{display:flex;flex:1;flex-direction:column;padding:20px}
.cs-featured-card__body small{color:var(--blue);font-weight:800;letter-spacing:1px;text-transform:uppercase}
.cs-featured-card__body h3{margin:8px 0;font-size:18px;line-height:1.2}
.cs-featured-card__body p{margin:0 0 16px;color:var(--ink);font-size:13px;line-height:1.5;flex:1}
.cs-featured-card__body b{color:var(--blue);font-size:12px}
.cs-card h3{margin:0 0 8px;font-size:21px;font-weight:800;letter-spacing:-.02em;line-height:1.15}
.cs-card__client{color:var(--navy);font-weight:700;font-size:14px;margin:0 0 6px}
.cs-card__scope{color:var(--ink);font-size:13.5px;line-height:1.55;margin:0 0 16px;flex:1}
.cs-card__foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--ink);font-weight:700}
.cs-card__go{color:var(--blue);font-weight:800}
/* status badges */
.st{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.3px}
.st::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.st-done{background:#e4f7ec;color:#0a8f4d}.st-po{background:#e5f1fd;color:#0a6fd0}.st-quote{background:#fff2dd;color:#b9760a}.st-rfq{background:#f0ecfb;color:#6a48c8}.st-eng{background:#eef1f5;color:#5a6579}
/* detail body */
.cs-body{padding:66px 0 40px;display:grid;grid-template-columns:1.7fr .9fr;gap:52px;align-items:start}
.cs-body h2{font-size:26px;font-weight:800;letter-spacing:-.02em;margin:0 0 14px}
.cs-body p{color:#39445c;font-size:16.5px;line-height:1.75;margin:0 0 18px}
.cs-project-image{display:block;width:100%;max-height:430px;object-fit:cover;border-radius:22px;margin:0 0 34px;box-shadow:0 18px 46px rgba(16,32,70,.12)}
.cs-prod{display:flex;gap:9px;flex-wrap:wrap;margin:6px 0 30px}
.cs-prod span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 15px;font-weight:800;font-size:13px}
.cs-aside{position:sticky;top:26px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 14px 40px rgba(16,32,70,.06)}
.cs-detail-brand{min-height:74px;display:flex;align-items:center;margin:-4px 0 20px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.cs-detail-brand img{display:block;max-width:160px;max-height:66px;object-fit:contain}
.cs-aside h3{margin:0 0 18px;font-size:13px;letter-spacing:1.2px;text-transform:uppercase;color:var(--ink)}
.cs-spec{list-style:none;margin:0;padding:0}
.cs-spec li{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.cs-spec li:last-child{border-bottom:0}
.cs-spec b{color:var(--ink);font-weight:700}.cs-spec span{font-weight:800;text-align:right}
.cs-aside .button{margin-top:20px;width:100%;justify-content:center;display:inline-flex}
/* related */
.cs-more{padding:20px 0 90px}
.cs-more h2{font-size:24px;font-weight:800;letter-spacing:-.02em;margin:0 0 22px}
/* cta band */
.cs-cta{background:var(--navy);color:#fff;padding:66px 0}
.cs-cta__in{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cs-cta h2{font-size:clamp(26px,3.2vw,42px);font-weight:800;letter-spacing:-.03em;margin:0;max-width:18ch}
.button{border:0;border-radius:999px;padding:15px 26px;background:var(--blue);color:#fff;font:800 14px Manrope;text-decoration:none;cursor:pointer;transition:.2s}
.button:hover{background:#0894c6;transform:translateY(-2px)}
.button--ghost{background:transparent;border:1.5px solid rgba(255,255,255,.4);color:#fff}
.button--light{background:#fff;color:var(--navy)}
.cs-empty{grid-column:1/-1;text-align:center;color:var(--ink);padding:60px 0;font-weight:700}
@media(max-width:1100px){.cs-featured__grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:960px){.cs-grid{grid-template-columns:repeat(2,1fr)}.cs-body{grid-template-columns:1fr;gap:30px}.cs-aside{position:static}.cs-featured__grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){body{background-attachment:scroll}.cs-grid,.cs-featured__grid{grid-template-columns:1fr}.cs-featured__heading{display:block}.cs-featured__heading p{margin-top:16px}}