/* =========================================================
   KTAdvance — Design & Build | Website Prototype
   Design system: navy + sky (logo) with gold accent
   Fonts: Montserrat (head) · Inter (body) · Bebas Neue (display)
   ========================================================= */

:root{
  /* Brand */
  --navy:#0E50A4; --navy-700:#0A3B7E; --navy-900:#0B2347;
  --ink:#0F2742; --ink-2:#13315C;
  --sky:#2EA7E0; --sky-300:#7FC7EC; --sky-100:#E7F4FC;
  --gold:#D4AF37; --gold-600:#B8932B;
  /* Neutrals */
  --white:#ffffff; --paper:#F5F8FC; --mist:#EAF0F7; --line:#E1E8F1;
  --text:#15263B; --muted:#5C6B7E; --muted-2:#93A1B1;
  /* System */
  --font-head:'Montserrat',system-ui,Segoe UI,Arial,sans-serif;
  --font-body:'Inter',system-ui,Segoe UI,Arial,sans-serif;
  --font-display:'Bebas Neue','Montserrat',sans-serif;
  --r-sm:8px; --r:14px; --r-lg:22px; --r-xl:30px;
  --container:1240px;
  --shadow-sm:0 2px 10px rgba(15,39,66,.06);
  --shadow:0 14px 40px rgba(15,39,66,.10);
  --shadow-lg:0 30px 70px rgba(15,39,66,.18);
  --shadow-blue:0 24px 60px rgba(14,80,164,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-body);color:var(--text);background:var(--white);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:var(--sky);color:#fff}

h1,h2,h3,h4,h5{font-family:var(--font-head);color:var(--ink);line-height:1.12;margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1rem}
.container{max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.bg-paper{background:var(--paper)}
.bg-mist{background:var(--mist)}
.bg-ink{background:var(--ink);color:#fff}
.bg-navy{background:var(--navy);color:#fff}
.bg-ink h1,.bg-ink h2,.bg-ink h3,.bg-navy h1,.bg-navy h2,.bg-navy h3{color:#fff}

/* ---------- Typography helpers ---------- */
.eyebrow{font-family:var(--font-head);font-weight:700;font-size:12.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--navy);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold)}
.eyebrow.center{justify-content:center}
.bg-ink .eyebrow,.bg-navy .eyebrow{color:var(--sky-300)}
.display{font-family:var(--font-display);font-weight:400;letter-spacing:.01em;line-height:.96}
.h-xxl{font-size:clamp(2.4rem,5.2vw,4.4rem)}
.h-xl{font-size:clamp(2rem,3.8vw,3.1rem)}
.h-lg{font-size:clamp(1.6rem,2.6vw,2.3rem)}
.lead{font-size:1.12rem;color:var(--muted);max-width:60ch}
.text-gold{color:var(--gold)}
.text-sky{color:var(--sky)}
.muted{color:var(--muted)}
.center{text-align:center}
.mx-auto{margin-left:auto;margin-right:auto}
.sec-head{max-width:720px;margin-bottom:54px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head h2{margin:18px 0 14px;font-size:clamp(1.9rem,3.4vw,2.7rem)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;
  font-size:14px;letter-spacing:.02em;padding:15px 26px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:.35s var(--ease);white-space:nowrap}
.btn svg{width:17px;height:17px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--navy);color:#fff;box-shadow:var(--shadow-blue)}
.btn-primary:hover{background:var(--navy-700);transform:translateY(-2px)}
.btn-gold{background:var(--gold);color:var(--ink)}
.btn-gold:hover{background:var(--gold-600);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{background:var(--sky-100);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-lg{padding:18px 34px;font-size:15px}

/* ---------- Header / Nav ---------- */
.header{position:fixed;inset:0 0 auto 0;z-index:90;transition:.4s var(--ease)}
.header .bar{display:flex;align-items:center;justify-content:space-between;height:84px;transition:.4s var(--ease)}
.header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:saturate(140%) blur(12px);box-shadow:var(--shadow-sm)}
.header.scrolled .bar{height:68px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-head);font-weight:800;letter-spacing:.02em;color:#fff;font-size:1.32rem}
.header.scrolled .brand,.header.solid .brand{color:var(--ink)}
.brand .mark{width:40px;height:40px;flex:0 0 auto}
.brand b{color:#fff}.header.scrolled .brand b,.header.solid .brand b{color:var(--navy)}
.nav{display:flex;align-items:center;gap:34px}
.nav a{font-family:var(--font-head);font-weight:600;font-size:14.5px;color:rgba(255,255,255,.92);position:relative;padding:6px 0;letter-spacing:.01em}
.header.scrolled .nav a,.header.solid .nav a{color:var(--ink)}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:width .3s var(--ease)}
.nav a:hover::after,.nav a.active::after{width:100%}
.header-cta{display:flex;align-items:center;gap:16px}
.header .tel{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-family:var(--font-head);font-size:14.5px}
.header.scrolled .tel,.header.solid .tel{color:var(--ink)}
.header .tel svg{width:18px;height:18px;color:var(--sky)}
.hamburger{display:none;width:46px;height:46px;border:1.5px solid rgba(255,255,255,.35);background:transparent;border-radius:12px;cursor:pointer;align-items:center;justify-content:center}
.header.scrolled .hamburger,.header.solid .hamburger{border-color:var(--line)}
.hamburger span{display:block;width:20px;height:2px;background:#fff;position:relative}
.header.scrolled .hamburger span,.header.solid .hamburger span{background:var(--ink)}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:inherit}
.hamburger span::before{top:-6px}.hamburger span::after{top:6px}
.header.solid{position:fixed;background:rgba(255,255,255,.94);backdrop-filter:saturate(140%) blur(12px);box-shadow:var(--shadow-sm)}

/* Mobile drawer */
.drawer{position:fixed;inset:0;z-index:120;visibility:hidden;opacity:0;transition:.35s}
.drawer.open{visibility:visible;opacity:1}
.drawer .scrim{position:absolute;inset:0;background:rgba(11,35,71,.5)}
.drawer .panel{position:absolute;top:0;right:0;height:100%;width:min(360px,86vw);background:#fff;
  transform:translateX(100%);transition:.4s var(--ease);padding:26px 26px;display:flex;flex-direction:column;gap:6px;overflow:auto}
.drawer.open .panel{transform:none}
.drawer .panel a{font-family:var(--font-head);font-weight:600;color:var(--ink);padding:15px 6px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between}
.drawer .close{align-self:flex-end;border:none;background:var(--mist);width:42px;height:42px;border-radius:10px;font-size:20px;cursor:pointer;margin-bottom:8px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero .bgwrap{position:absolute;inset:0;z-index:-2}
.hero .bgwrap .ph{position:absolute;inset:0;border-radius:0}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(105deg,rgba(11,35,71,.92) 0%,rgba(11,35,71,.72) 42%,rgba(14,80,164,.34) 100%)}
.hero-inner{padding:140px 0 90px;max-width:880px}
.hero h1{font-size:clamp(2.6rem,6vw,5rem);color:#fff;letter-spacing:-.02em;margin:20px 0 22px}
.hero h1 .out{color:transparent;-webkit-text-stroke:1.4px rgba(255,255,255,.65)}
.hero .sub{font-family:var(--font-head);font-weight:600;letter-spacing:.34em;text-transform:uppercase;color:var(--sky-300);font-size:15px}
.hero p.lead{color:rgba(255,255,255,.86);font-size:1.18rem;max-width:54ch;margin-bottom:34px}
.hero .cta-row{display:flex;gap:16px;flex-wrap:wrap}
.hero .scrollcue{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);color:rgba(255,255,255,.7);font-size:11px;letter-spacing:.3em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:10px}
.hero .scrollcue i{width:1px;height:46px;background:linear-gradient(var(--gold),transparent);animation:cue 1.8s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}50.1%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.hero-badges{position:absolute;right:28px;bottom:38px;display:flex;gap:30px;z-index:2}
.hero-badges .n{font-family:var(--font-display);font-size:2.4rem;color:#fff;line-height:1}
.hero-badges small{color:var(--sky-300);letter-spacing:.06em;font-size:.74rem;text-transform:uppercase}

/* Page hero */
.pagehero{position:relative;color:#fff;padding:170px 0 80px;overflow:hidden}
.pagehero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(115deg,rgba(11,35,71,.94),rgba(14,80,164,.5))}
.pagehero .ph{position:absolute;inset:0;z-index:-2}
.pagehero h1{color:#fff;font-size:clamp(2.2rem,4.4vw,3.5rem);margin:14px 0 12px}
.crumbs{font-size:13.5px;color:rgba(255,255,255,.7);font-family:var(--font-head);font-weight:600}
.crumbs a:hover{color:var(--sky-300)}

/* ---------- Stat counters ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:6px 26px;border-left:1px solid var(--line)}
.stat:first-child{border-left:none;padding-left:0}
.stat .num{font-family:var(--font-display);font-size:clamp(2.8rem,4.6vw,3.9rem);line-height:1;color:var(--navy);letter-spacing:.01em}
.bg-ink .stat .num,.bg-navy .stat .num{color:#fff}
.bg-ink .stat,.bg-navy .stat{border-color:rgba(255,255,255,.16)}
.stat .num .suffix{color:var(--gold);font-size:.7em}
.stat label{display:block;margin-top:8px;color:var(--muted);font-weight:600;font-size:.92rem}
.bg-ink .stat label,.bg-navy .stat label{color:rgba(255,255,255,.7)}

/* ---------- Service cards ---------- */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:420px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;padding:30px;isolation:isolate;transition:.5s var(--ease)}
.service-card .ph{position:absolute;inset:0;z-index:-2}
.service-card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(11,35,71,.15) 0%,rgba(11,35,71,.55) 55%,rgba(11,35,71,.92) 100%);transition:.5s}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.service-card .idx{font-family:var(--font-display);font-size:1.5rem;color:var(--sky-300);position:absolute;top:24px;left:30px}
.service-card .ico{position:absolute;top:22px;right:26px;width:34px;height:34px;color:#fff;opacity:.9}
.service-card h3{color:#fff;font-size:1.45rem;margin-bottom:6px}
.service-card .en{font-family:var(--font-display);font-size:1.1rem;color:var(--gold);letter-spacing:.06em}
.service-card p{color:rgba(255,255,255,.82);font-size:.95rem;max-height:0;opacity:0;overflow:hidden;transition:.5s var(--ease);margin:0}
.service-card .more{display:inline-flex;align-items:center;gap:8px;margin-top:14px;color:#fff;font-family:var(--font-head);font-weight:700;font-size:13px;max-height:0;opacity:0;overflow:hidden;transition:.5s var(--ease)}
.service-card:hover p{max-height:120px;opacity:1;margin-top:10px}
.service-card:hover .more{max-height:40px;opacity:1}

/* ---------- Project grid ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px;grid-auto-flow:dense}
.proj-card{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:300px;color:#fff;display:block;isolation:isolate}
.proj-card.span6{grid-column:span 6}.proj-card.span4{grid-column:span 4}.proj-card.span8{grid-column:span 8}
.proj-card.tall{min-height:480px}
.proj-card .ph{position:absolute;inset:0;z-index:-2;transition:transform .7s var(--ease)}
.proj-card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(11,35,71,0) 30%,rgba(11,35,71,.85) 100%);transition:.5s}
.proj-card:hover .ph{transform:scale(1.07)}
.proj-card .meta{position:absolute;left:0;bottom:0;padding:26px;width:100%;transform:translateY(8px);transition:.45s var(--ease)}
.proj-card:hover .meta{transform:none}
.proj-card .tag{display:inline-block;font-family:var(--font-head);font-weight:700;font-size:11px;letter-spacing:.14em;text-transform:uppercase;background:rgba(255,255,255,.16);backdrop-filter:blur(4px);padding:6px 12px;border-radius:999px;margin-bottom:12px}
.proj-card h3{color:#fff;font-size:1.4rem;margin-bottom:6px}
.proj-card .info{display:flex;gap:18px;color:rgba(255,255,255,.82);font-size:.84rem;font-weight:600;opacity:0;max-height:0;overflow:hidden;transition:.45s var(--ease)}
.proj-card:hover .info{opacity:1;max-height:40px;margin-top:4px}
.proj-card .info span{display:inline-flex;align-items:center;gap:6px}
.proj-card .corner{position:absolute;top:20px;right:20px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.15);display:grid;place-items:center;opacity:0;transform:scale(.6);transition:.4s var(--ease)}
.proj-card:hover .corner{opacity:1;transform:none}

/* ---------- Feature (why) cards ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 30px;transition:.4s var(--ease)}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feature .ic{width:60px;height:60px;border-radius:16px;background:var(--sky-100);color:var(--navy);display:grid;place-items:center;margin-bottom:22px;transition:.4s}
.feature:hover .ic{background:var(--navy);color:#fff}
.feature .ic svg{width:28px;height:28px}
.feature .no{font-family:var(--font-display);color:var(--mist);font-size:2.2rem;float:right;line-height:.8}
.feature:hover .no{color:var(--sky-100)}
.feature h3{font-size:1.22rem;margin-bottom:10px}
.feature p{color:var(--muted);font-size:.96rem;margin:0}

/* ---------- Split / Factory ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.split.rev{grid-template-columns:.95fr 1.05fr}
.metric-row{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.metric{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:18px 20px}
.metric .m{font-family:var(--font-display);font-size:1.9rem;color:var(--sky-300)}
.metric small{color:rgba(255,255,255,.72);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{font-family:var(--font-head);font-weight:600;font-size:13px;border:1px solid var(--line);color:var(--ink);padding:9px 16px;border-radius:999px;background:#fff}
.bg-ink .chip,.bg-navy .chip{border-color:rgba(255,255,255,.22);color:#fff;background:transparent}

/* ---------- Marquee ---------- */
.marquee{overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee .track{display:flex;gap:60px;width:max-content;animation:scrollx 32s linear infinite}
.marquee:hover .track{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.logo-pill{height:84px;min-width:180px;display:grid;place-items:center;padding:0 30px;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  font-family:var(--font-head);font-weight:800;letter-spacing:.04em;color:var(--muted-2);font-size:1.15rem;filter:grayscale(1);opacity:.8;transition:.3s}
.logo-pill:hover{filter:none;opacity:1;color:var(--navy);border-color:var(--sky-300)}

/* ---------- Testimonial ---------- */
.quote{font-family:var(--font-head);font-weight:700;font-size:clamp(1.3rem,2.4vw,2rem);line-height:1.4;color:#fff;letter-spacing:-.01em}
.quote .mark{font-family:var(--font-display);font-size:4rem;color:var(--gold);line-height:.4;display:block}

/* ---------- CTA banner ---------- */
.cta-banner{position:relative;border-radius:var(--r-xl);overflow:hidden;color:#fff;padding:72px 60px;isolation:isolate}
.cta-banner .ph{position:absolute;inset:0;z-index:-2}
.cta-banner::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,rgba(11,35,71,.95),rgba(14,80,164,.7))}
.cta-banner h2{color:#fff;font-size:clamp(1.8rem,3.2vw,2.7rem);max-width:18ch}

/* ---------- Footer ---------- */
.footer{background:var(--navy-900);color:rgba(255,255,255,.74);padding:74px 0 30px}
.footer h4{color:#fff;font-size:1rem;letter-spacing:.04em;margin-bottom:20px;font-weight:700}
.footer a{color:rgba(255,255,255,.74);transition:.25s}
.footer a:hover{color:var(--sky-300)}
.footer .grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:44px}
.footer li{margin-bottom:11px}
.footer .brand{color:#fff;margin-bottom:18px}
.footer .social{display:flex;gap:12px;margin-top:20px}
.footer .social a{width:42px;height:42px;border:1px solid rgba(255,255,255,.18);border-radius:12px;display:grid;place-items:center;color:#fff}
.footer .social a:hover{background:var(--navy);border-color:var(--navy)}
.footer .news{display:flex;gap:8px;margin-top:16px}
.footer .news input{flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:10px;padding:12px 14px;color:#fff}
.footer .news input::placeholder{color:rgba(255,255,255,.5)}
.footer .bottom{margin-top:54px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px}

/* ---------- Forms ---------- */
.form{display:grid;gap:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field label{display:block;font-family:var(--font-head);font-weight:600;font-size:13px;margin-bottom:8px;color:var(--ink)}
.field input,.field select,.field textarea{width:100%;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;font-family:inherit;font-size:15px;color:var(--text);background:#fff;transition:.25s}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 4px rgba(46,167,224,.16)}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:30px}
.timeline::before{content:"";position:absolute;left:140px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{display:grid;grid-template-columns:140px 1fr;gap:40px;padding:14px 0 34px;position:relative}
.tl-item .yr{font-family:var(--font-display);font-size:2rem;color:var(--navy);text-align:right;padding-right:8px}
.tl-item .dot{position:absolute;left:134px;top:14px;width:14px;height:14px;border-radius:50%;background:var(--navy);border:3px solid #fff;box-shadow:0 0 0 2px var(--sky-300)}
.tl-item h4{margin-bottom:6px;font-size:1.16rem}
.tl-item p{color:var(--muted);margin:0}

/* ---------- Filter chips ---------- */
.filterbar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:40px}
.filterbar button{font-family:var(--font-head);font-weight:600;font-size:14px;padding:11px 22px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;transition:.3s}
.filterbar button.active,.filterbar button:hover{background:var(--navy);border-color:var(--navy);color:#fff}

/* ---------- Project detail ---------- */
.pd-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.pd-meta div{padding:24px 26px;border-left:1px solid var(--line)}
.pd-meta div:first-child{border-left:none}
.pd-meta small{color:var(--navy);font-family:var(--font-head);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:11px}
.pd-meta b{display:block;margin-top:6px;font-size:1.12rem;color:var(--ink)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery .g{border-radius:var(--r);overflow:hidden;min-height:230px;cursor:pointer;position:relative}
.gallery .g.wide{grid-column:span 2}
.gallery .ph{position:absolute;inset:0;transition:transform .6s var(--ease)}
.gallery .g:hover .ph{transform:scale(1.06)}
.scope-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 40px}
.scope-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-weight:600;color:var(--ink)}
.scope-list li svg{color:var(--gold);flex:0 0 auto}
.csr{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.csr .box{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.csr .box h4{color:var(--navy);margin-bottom:10px}
.csr .box.sol{background:var(--ink);color:#fff}
.csr .box.sol h4{color:var(--sky-300)}
.csr .box.sol p{color:rgba(255,255,255,.82)}

/* Before/After */
.ba{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:420px;user-select:none}
.ba .after,.ba .before{position:absolute;inset:0}
.ba .before{clip-path:inset(0 50% 0 0)}
.ba .lbl{position:absolute;top:16px;font-family:var(--font-head);font-weight:700;font-size:12px;letter-spacing:.1em;color:#fff;background:rgba(11,35,71,.6);padding:6px 12px;border-radius:999px}
.ba .lbl.l{left:16px}.ba .lbl.r{right:16px}
.ba input[type=range]{position:absolute;bottom:18px;left:8%;width:84%;z-index:5;accent-color:var(--gold)}
.ba .handle{position:absolute;top:0;bottom:0;left:50%;width:3px;background:#fff;box-shadow:0 0 0 1px rgba(11,35,71,.2)}
.ba .handle::after{content:"\21C6";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:40px;height:40px;background:#fff;color:var(--navy);border-radius:50%;display:grid;place-items:center;font-size:16px;box-shadow:var(--shadow)}

/* ---------- FAQ accordion ---------- */
.faq{border-top:1px solid var(--line)}
.faq .q{width:100%;text-align:left;background:none;border:none;border-bottom:1px solid var(--line);padding:22px 0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;font-family:var(--font-head);font-weight:700;font-size:1.05rem;color:var(--ink)}
.faq .q .pm{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--sky-100);color:var(--navy);display:grid;place-items:center;transition:.3s}
.faq .q[aria-expanded=true] .pm{background:var(--navy);color:#fff;transform:rotate(45deg)}
.faq .a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq .a p{color:var(--muted);padding:4px 0 22px}

/* ---------- Placeholder image system ---------- */
.ph{background:
   radial-gradient(120% 120% at 80% 10%, rgba(46,167,224,.55) 0%, rgba(46,167,224,0) 45%),
   linear-gradient(135deg,#0B2347 0%,#0E50A4 55%,#2EA7E0 130%);
  position:relative;overflow:hidden}
.ph::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:40px 40px;opacity:.5}
.ph[data-label]::after{content:attr(data-label);position:absolute;left:18px;bottom:14px;color:rgba(255,255,255,.55);
  font-family:var(--font-head);font-weight:700;font-size:11px;letter-spacing:.16em;text-transform:uppercase}
.ph.alt{background:
   radial-gradient(120% 120% at 10% 90%, rgba(212,175,55,.4) 0%, rgba(212,175,55,0) 40%),
   linear-gradient(135deg,#0E50A4 0%,#0A3B7E 60%,#0B2347 120%)}
.ph.soft{background:
   radial-gradient(120% 120% at 80% 0%, rgba(46,167,224,.4) 0%, rgba(46,167,224,0) 45%),
   linear-gradient(135deg,#13315C,#0E50A4)}
.ph .pico{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:54px;height:54px;color:rgba(255,255,255,.35)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}*{scroll-behavior:auto}}

/* Back to top */
.totop{position:fixed;right:24px;bottom:24px;width:50px;height:50px;border-radius:14px;background:var(--navy);color:#fff;border:none;cursor:pointer;display:grid;place-items:center;opacity:0;transform:translateY(14px);pointer-events:none;transition:.35s;z-index:80;box-shadow:var(--shadow-blue)}
.totop.show{opacity:1;transform:none;pointer-events:auto}

/* Floating contact */
.float-contact{position:fixed;left:22px;bottom:24px;z-index:80;display:flex;flex-direction:column;gap:12px}
.float-contact a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:var(--shadow);font-family:var(--font-head);font-weight:800;font-size:13px}
.float-contact .zalo{background:#0068FF}.float-contact .call{background:var(--gold);color:var(--ink);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(212,175,55,.5)}70%{box-shadow:0 0 0 14px rgba(212,175,55,0)}100%{box-shadow:0 0 0 0 rgba(212,175,55,0)}}

/* ---------- Utilities ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.flex{display:flex}.between{justify-content:space-between}.items-center{align-items:center}.gap-s{gap:14px}.wrap{flex-wrap:wrap}
.mt-s{margin-top:14px}.mt-m{margin-top:26px}.mt-l{margin-top:44px}.mb-0{margin-bottom:0}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--sky-100);color:var(--navy);font-family:var(--font-head);font-weight:700;font-size:12.5px;padding:8px 14px;border-radius:999px}
.divgold{width:60px;height:3px;background:var(--gold);border-radius:3px;margin:18px 0}
.list-check li{display:flex;gap:12px;padding:9px 0;color:var(--ink);font-weight:500}
.list-check svg{color:var(--gold);flex:0 0 auto;margin-top:3px}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .section{padding:84px 0}
  .nav,.header .tel{display:none}
  .hamburger{display:inline-flex}
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .cards-3{grid-template-columns:1fr 1fr}
  .proj-grid{grid-template-columns:repeat(8,1fr)}
  .proj-card.span6,.proj-card.span8{grid-column:span 8}.proj-card.span4{grid-column:span 4}
  .split,.split.rev{grid-template-columns:1fr;gap:40px}
  .footer .grid{grid-template-columns:1fr 1fr;gap:32px}
  .pd-meta{grid-template-columns:1fr 1fr}.pd-meta div:nth-child(3){border-left:none}
  .csr{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .stats{grid-template-columns:1fr 1fr;gap:30px 0}
  .stat{border-left:none;padding:0 10px}
  .cards-4,.cards-3{grid-template-columns:1fr}
  .proj-grid{grid-template-columns:1fr}
  .proj-card,.proj-card.span4,.proj-card.span6,.proj-card.span8{grid-column:auto;min-height:300px}
  .grid-2,.scope-list{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer .grid{grid-template-columns:1fr}
  .cta-banner{padding:48px 26px}
  .timeline::before{left:74px}.tl-item{grid-template-columns:74px 1fr;gap:20px}.tl-item .dot{left:68px}.tl-item .yr{font-size:1.4rem}
  .pd-meta{grid-template-columns:1fr 1fr}
  .hero-badges{display:none}
  .gallery{grid-template-columns:1fr 1fr}.gallery .g.wide{grid-column:span 2}
}

/* ===== Language switch ===== */
.langsw{display:inline-flex;border:1.5px solid rgba(255,255,255,.45);border-radius:999px;overflow:hidden;flex:0 0 auto}
.header.scrolled .langsw,.header.solid .langsw{border-color:var(--line)}
.langsw button{border:none;background:transparent;color:#fff;font-family:var(--font-head);font-weight:700;font-size:12px;letter-spacing:.06em;padding:7px 12px;cursor:pointer;transition:.25s;line-height:1}
.header.scrolled .langsw button,.header.solid .langsw button{color:var(--ink)}
.langsw button.active{background:var(--gold);color:var(--ink)}
.drawer-langsw{border-color:var(--line);margin-bottom:12px;width:max-content}
.drawer-langsw button{color:var(--ink)}
@media (max-width:1024px){ .header-cta > .langsw{display:none} }