/* =========================================================
   ANCONS — Design tokens
   Palette derived from the ANCONS logo (deep navy + teal swoosh)
   plus a warm concrete gray, a nod to the company's core material.
   ========================================================= */
:root{
  --navy-950:#0B1526;
  --navy-900:#0F1E38;
  --navy-800:#152A4C;
  --navy-700:#1D3760;

  --teal-500:#22B8B0;
  --teal-400:#3FD0C8;
  --teal-300:#8FE6DF;
  --teal-050:#EAFBF9;

  --concrete-050:#F4F3EF;
  --concrete-100:#EAE8E2;
  --concrete-400:#9A978E;
  --concrete-700:#5C5A54;

  --ink-900:#13161C;
  --white:#FFFFFF;

  --font-display:'Space Grotesk', 'Inter', sans-serif;
  --font-body:'Inter', system-ui, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, monospace;

  --radius-md:10px;
  --radius-lg:20px;
  --shadow-card:0 18px 40px -24px rgba(15,30,56,0.35);
  --container-w:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink-900);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  max-width:100%;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;line-height:1.12;font-weight:600;}
p{margin:0;}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

:focus-visible{outline:3px solid var(--teal-500);outline-offset:2px;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;
  font-family:var(--font-body);font-weight:600;font-size:0.95rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--navy-900);color:var(--white);}
.btn-primary:hover{background:var(--navy-800);box-shadow:var(--shadow-card);}
.btn-accent{background:var(--teal-500);color:var(--navy-950);}
.btn-accent:hover{background:var(--teal-400);box-shadow:0 18px 34px -18px rgba(34,184,176,0.55);}
.btn-ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,0.35);}
.btn-ghost:hover{border-color:var(--white);}
.btn-sm{padding:10px 18px;font-size:0.85rem;}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--concrete-100);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  padding-top:10px;padding-bottom:10px;
}
.brand{flex:0 0 auto;}
.brand-logo{height:42px;width:auto;}

.main-nav{flex:1;display:flex;justify-content:center;}
.main-nav > ul{display:flex;align-items:center;gap:6px;}
.main-nav > ul > li{position:relative;}
.main-nav > ul > li > a{
  display:block;padding:12px 14px;border-radius:8px;
  font-weight:600;font-size:0.94rem;color:var(--navy-900);
  transition:background .15s ease, color .15s ease;
}
.main-nav > ul > li > a:hover{background:var(--concrete-050);color:var(--teal-500);}

.mega-panel{
  position:absolute;top:100%;left:0;
  display:flex;gap:36px;
  background:var(--white);
  border:1px solid var(--concrete-100);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  padding:26px 30px;
  min-width:420px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .16s ease, transform .16s ease, visibility .16s ease;
  z-index:50;
}
.mega-panel--wide{min-width:620px;}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col{min-width:170px;}
.mega-title{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--font-mono);font-size:0.8rem;
  font-weight:600;color:var(--teal-500);
  text-transform:uppercase;letter-spacing:.02em;
  margin-bottom:12px;padding-bottom:10px;
  border-bottom:1px solid var(--concrete-100);
}
.mega-title .num{color:var(--navy-900);font-weight:600;}
.mega-col ul li{
  padding:6px 0;font-size:0.9rem;color:var(--concrete-700);
}

.header-cta{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.phone-pill{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-weight:600;font-size:0.88rem;
  color:var(--navy-900);
}
.phone-pill svg{color:var(--teal-500);}

.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:none;background:none;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--navy-900);}

/* =========================================================
   TOPBAR
   ========================================================= */
.topbar{background:var(--navy-950);color:rgba(255,255,255,0.85);}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;padding:9px 24px;font-size:0.82rem;
}
.topbar-left{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.topbar-link{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,0.85);transition:color .15s ease;}
.topbar-link svg{color:var(--teal-400);flex:0 0 auto;}
.topbar-link:hover{color:var(--teal-400);}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-cta{font-weight:600;color:var(--teal-400);}
.topbar-cta:hover{color:var(--teal-300);}
.topbar-social{display:flex;gap:8px;}
.social-icon{
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.08);color:rgba(255,255,255,0.85);
  transition:background .15s ease, color .15s ease;
}
.social-icon:hover{background:var(--teal-500);color:var(--navy-950);}

/* =========================================================
   HEADER SEARCH
   ========================================================= */
.header-search{flex:0 0 auto;}
.header-search form{
  display:flex;align-items:center;gap:6px;
  background:#ffffff;border:1px solid #f3f2ee;
  border-radius:999px;padding:6px 6px 6px 16px;
}
.header-search input{
  border:none;background:transparent;outline:none;
  font-family:var(--font-body);font-size:0.88rem;width:170px;color:#22b8b0;
}
.header-search input::placeholder{color:var(--concrete-400);}
.header-search button{
  width:32px;height:32px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  background:var(--navy-900);color:var(--white);
  transition:background .15s ease, color .15s ease;
}
.header-search button:hover{background:var(--teal-500);color:var(--navy-950);}

/* Simple single-column dropdown (used by "Dịch vụ") */
.mega-panel--simple{min-width:210px;padding:14px 16px;gap:0;}
.mega-panel--simple .mega-col ul li{padding:0;}
.mega-panel--simple .mega-col ul li a{
  display:block;padding:9px 8px;border-radius:6px;
  font-size:0.92rem;font-weight:600;color:var(--navy-900);
  transition:background .15s ease, color .15s ease;
}
.mega-panel--simple .mega-col ul li a:hover{background:var(--concrete-050);color:var(--teal-500);}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(100deg, rgba(11,21,38,0.93) 10%, rgba(11,21,38,0.82) 55%, rgba(11,21,38,0.62) 100%),
    radial-gradient(ellipse at top left, var(--navy-800), var(--navy-950) 70%);
  background-image:
    linear-gradient(100deg, rgba(11,21,38,0.93) 10%, rgba(11,21,38,0.8) 55%, rgba(11,21,38,0.55) 100%),
    url('../bannerpng.png');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  color:var(--white);
  padding:96px 0 76px;
}
.hero-texture{
  position:absolute;inset:0;opacity:0.55;pointer-events:none;
  background-image:
    radial-gradient(circle 3px at 8% 22%, var(--teal-400) 98%, transparent),
    radial-gradient(circle 5px at 18% 62%, rgba(255,255,255,0.5) 98%, transparent),
    radial-gradient(circle 2px at 30% 15%, var(--teal-300) 98%, transparent),
    radial-gradient(circle 4px at 42% 78%, rgba(255,255,255,0.35) 98%, transparent),
    radial-gradient(circle 3px at 55% 30%, var(--teal-400) 98%, transparent),
    radial-gradient(circle 2px at 66% 55%, rgba(255,255,255,0.45) 98%, transparent),
    radial-gradient(circle 5px at 78% 20%, var(--teal-300) 98%, transparent),
    radial-gradient(circle 3px at 88% 68%, rgba(255,255,255,0.4) 98%, transparent),
    radial-gradient(circle 2px at 95% 40%, var(--teal-400) 98%, transparent),
    radial-gradient(circle 4px at 12% 90%, rgba(255,255,255,0.3) 98%, transparent),
    radial-gradient(circle 3px at 70% 88%, var(--teal-300) 98%, transparent);
  background-size:100% 100%;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:64px;
  align-items:center;
}
.hero-content{max-width:640px;}

.hero-highlight{position:relative;}
.hero-highlight-card{
  background:rgba(255,255,255,0.07);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:var(--radius-lg);
  padding:30px 28px;
}
.hero-highlight-tag{
  display:inline-block;font-family:var(--font-mono);font-size:0.76rem;
  text-transform:uppercase;letter-spacing:.06em;color:var(--teal-300);
  margin-bottom:18px;
}
.hero-highlight-card ul{margin-bottom:22px;}
.hero-highlight-card ul li{
  position:relative;padding:10px 0 10px 20px;
  font-size:0.94rem;color:rgba(255,255,255,0.88);
  border-top:1px solid rgba(255,255,255,0.12);
}
.hero-highlight-card ul li:first-child{border-top:none;}
.hero-highlight-card ul li::before{
  content:'';position:absolute;left:0;top:19px;
  width:6px;height:6px;border-radius:50%;background:var(--teal-400);
}
.hero-highlight-link{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:0.86rem;font-weight:600;
  color:var(--teal-400);transition:color .15s ease, gap .15s ease;
}
.hero-highlight-link:hover{color:var(--teal-300);gap:10px;}
.eyebrow{
  font-family:var(--font-mono);font-size:0.82rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--teal-300);margin-bottom:18px;
}
.hero h1{font-size:clamp(2.1rem, 4.4vw, 3.4rem);font-weight:600;letter-spacing:-0.01em;}
.hero h1 span{color:var(--teal-400);}
.hero-lead{
  margin-top:22px;font-size:1.08rem;line-height:1.65;
  color:rgba(255,255,255,0.78);max-width:600px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;}
.hero-stats{
  display:flex;gap:44px;margin-top:64px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,0.15);padding-top:28px;
}
.hero-stats dt{
  font-family:var(--font-mono);font-size:1.9rem;font-weight:600;color:var(--teal-400);
}
.hero-stats dd{margin:6px 0 0;font-size:0.86rem;color:rgba(255,255,255,0.65);max-width:180px;}

/* =========================================================
   SECTION HEADS
   ========================================================= */
.section-eyebrow{
  font-family:var(--font-mono);font-size:0.8rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--teal-500);margin-bottom:14px;
}
.section-lead{margin-top:18px;color:var(--concrete-700);font-size:1.02rem;line-height:1.65;}
.pillars{padding:88px 24px 40px;}
.pillars h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-top:4px;max-width:720px;}
.pillars .section-lead{max-width:640px;}
.pillars-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
  margin-top:40px;
}
.pillar-card{
  display:block;background:var(--white);
  border:1px solid var(--concrete-100);border-radius:var(--radius-md);
  padding:30px 26px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.pillar-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:transparent;}
.pillar-index{font-family:var(--font-mono);font-size:0.85rem;font-weight:600;color:var(--teal-500);}
.pillar-card h3{font-size:1.15rem;margin:14px 0 10px;}
.pillar-card p{font-size:0.92rem;color:var(--concrete-700);line-height:1.6;margin-bottom:18px;}
.pillar-link{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:0.85rem;font-weight:600;color:var(--navy-900);
  transition:color .15s ease, gap .15s ease;
}
.pillar-card:hover .pillar-link{color:var(--teal-500);gap:10px;}

/* =========================================================
   MỤC LỤC SECTIONS
   ========================================================= */
.mucluc-section{padding:56px 0;}
.mucluc-alt{background:var(--concrete-050);}
.mucluc-head{max-width:640px;margin-bottom:40px;}
.mucluc-num{
  display:inline-block;font-family:var(--font-mono);font-size:0.82rem;
  font-weight:600;color:var(--white);background:var(--navy-900);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.mucluc-head h2{font-size:clamp(1.5rem,2.8vw,2rem);margin-bottom:12px;}
.mucluc-head p{color:var(--concrete-700);font-size:1rem;line-height:1.6;}

.group-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.group-grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.group-grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}

.group-card{
  background:var(--white);
  border:1px solid var(--concrete-100);
  border-radius:var(--radius-md);
  padding:28px 26px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.mucluc-alt .group-card{background:var(--white);}
.group-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card);
  border-color:transparent;
}
.group-card header{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.roman{
  font-family:var(--font-mono);font-weight:600;font-size:0.95rem;
  color:var(--teal-500);
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--teal-050);flex:0 0 auto;
}
.group-card h3{font-size:1.12rem;}
.item-list li{
  position:relative;padding:9px 0 9px 18px;
  font-size:0.94rem;color:var(--concrete-700);line-height:1.5;
  border-top:1px solid var(--concrete-100);
}
.item-list li:first-child{border-top:none;}
.item-list li::before{
  content:'';position:absolute;left:0;top:18px;
  width:6px;height:6px;border-radius:50%;background:var(--teal-400);
}

/* =========================================================
   ABOUT
   ========================================================= */
.about{padding:96px 0;background:var(--navy-950);color:var(--white);}
.about-inner{display:grid;grid-template-columns:1.15fr 0.85fr;gap:56px;align-items:center;}
.about h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-top:6px;margin-bottom:20px;line-height:1.22;}
.about-copy > p{color:rgba(255,255,255,0.75);font-size:1.02rem;line-height:1.7;margin-bottom:36px;}
.fact-list{display:grid;grid-template-columns:1fr 1fr;gap:26px 30px;}
.fact-list dt{
  font-family:var(--font-mono);font-size:0.76rem;text-transform:uppercase;
  letter-spacing:.05em;color:var(--teal-400);margin-bottom:6px;
}
.fact-list dd{margin:0;font-size:0.94rem;line-height:1.55;color:rgba(255,255,255,0.88);}
.fact-en{color:rgba(255,255,255,0.55);font-size:0.85em;}
.about-svg{width:100%;height:auto;border-radius:var(--radius-lg);}

/* =========================================================
   WHY
   ========================================================= */
.why{padding:96px 24px;}
.why h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-top:6px;margin-bottom:40px;max-width:600px;}
.why-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.why-card{padding:26px 4px 0 0;border-top:2px solid var(--navy-900);}
.why-mark{font-family:var(--font-mono);font-size:0.85rem;color:var(--teal-500);font-weight:600;}
.why-card h3{font-size:1.05rem;margin:14px 0 10px;}
.why-card p{font-size:0.92rem;color:var(--concrete-700);line-height:1.6;}

/* =========================================================
   CTA BANNER
   ========================================================= */
.cta-banner{
  position:relative;overflow:hidden;
  background:var(--teal-500);
  padding:74px 0;text-align:center;
}
.cta-texture{
  position:absolute;inset:0;opacity:0.35;pointer-events:none;
  background-image:
    radial-gradient(circle 3px at 15% 30%, var(--navy-900) 98%, transparent),
    radial-gradient(circle 4px at 32% 70%, var(--white) 98%, transparent),
    radial-gradient(circle 2px at 50% 20%, var(--navy-900) 98%, transparent),
    radial-gradient(circle 3px at 68% 65%, var(--white) 98%, transparent),
    radial-gradient(circle 4px at 85% 35%, var(--navy-900) 98%, transparent);
}
.cta-inner{position:relative;max-width:560px;margin:0 auto;}
.cta-banner h2{font-size:clamp(1.5rem,3vw,2rem);color:var(--navy-950);}
.cta-banner p{margin-top:14px;color:rgba(11,21,38,0.75);font-size:1.02rem;}
.cta-banner .btn-accent{margin-top:28px;background:var(--navy-950);color:var(--white);}
.cta-banner .btn-accent:hover{background:var(--navy-800);}

/* =========================================================
   CONTACT
   ========================================================= */
.contact{padding:96px 0;background:var(--concrete-050);}
.contact h2{font-size:clamp(1.5rem,3vw,2rem);margin-top:6px;}
.contact .section-lead{max-width:640px;}

.contact-panel{
  margin-top:48px;
  display:grid;grid-template-columns:0.95fr 1.05fr;
  background:var(--white);
  border:1px solid var(--concrete-100);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.contact-info{
  background:var(--navy-950);color:var(--white);
  padding:44px 40px;
}
.contact-list li{
  display:flex;align-items:flex-start;gap:14px;
  padding:16px 0;border-top:1px solid rgba(255,255,255,0.12);
  font-size:0.96rem;
}
.contact-list li:first-child{border-top:none;padding-top:0;}
.contact-icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.08);color:var(--teal-400);
}
.contact-text{display:flex;flex-direction:column;gap:4px;}
.contact-list a{color:var(--white);transition:color .15s ease;}
.contact-list a:hover{color:var(--teal-400);}
.contact-list span:not(.contact-label):not(.contact-icon){color:rgba(255,255,255,0.85);line-height:1.55;}
.contact-label{
  font-family:var(--font-mono);font-size:0.74rem;text-transform:uppercase;
  letter-spacing:.05em;color:var(--teal-400);
}
.contact-quick{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.btn-ghost-dark{
  background:rgba(255,255,255,0.08);color:var(--white);
  border-color:rgba(255,255,255,0.18);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.3);}

.contact-form{
  padding:44px 40px;
  background:var(--white);border:none;border-radius:0;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
.form-row{margin-bottom:18px;display:flex;flex-direction:column;gap:8px;}
.form-row label{font-size:0.86rem;font-weight:600;color:var(--navy-900);}
.form-row input,.form-row textarea{
  border:1px solid var(--concrete-100);border-radius:8px;
  padding:12px 14px;font-family:var(--font-body);font-size:0.95rem;
  background:var(--concrete-050);resize:vertical;
}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--teal-500);background:var(--white);
}
.contact-form .btn{width:100%;justify-content:center;margin-top:6px;}
.form-hint{margin-top:12px;font-size:0.78rem;color:var(--concrete-400);line-height:1.5;}
.form-note{margin-top:10px;font-size:0.88rem;color:var(--teal-500);font-weight:600;min-height:1.2em;}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{background:var(--navy-950);color:rgba(255,255,255,0.8);}
.footer-inner{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:72px 24px 48px;
}
.footer-logo{height:80px;margin-bottom:16px;}
.footer-brand p{font-size:15px;line-height:1.6;color:rgba(255,255,255,0.55);max-width:280px;}
.footer-col h4{
  font-family:var(--font-mono);font-size:15px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--teal-400);margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;font-size:15px;}
.footer-col a:hover{color:var(--teal-400);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:22px 0;}
.footer-bottom p{font-size:15px;color:rgba(255,255,255,0.45);}

/* =========================================================
   FLOATING ACTIONS
   ========================================================= */
.floating-actions{
  position:fixed;right:22px;bottom:22px;z-index:90;
  display:flex;flex-direction:column;gap:12px;
}
.fab{
  width:50px;height:50px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 24px -10px rgba(15,30,56,0.45);
  transition:transform .18s ease;
}
.fab:hover{transform:translateY(-3px);}
.fab-phone{background:var(--teal-500);color:var(--navy-950);}
.fab-mail{background:var(--navy-900);color:var(--white);}

/* =========================================================
   PLACEHOLDER SECTIONS (Sản phẩm / Công trình / Quy trình)
   ========================================================= */
.placeholder-section{padding:72px 0;border-top:1px solid var(--concrete-100);text-align:center;}
.placeholder-alt{background:var(--concrete-050);}
.placeholder-section .container{max-width:620px;}
.placeholder-section h2{font-size:clamp(1.4rem,2.6vw,1.9rem);margin-top:6px;}
.placeholder-note{margin:16px 0 26px;color:var(--concrete-700);font-size:0.98rem;line-height:1.65;}

/* =========================================================
   PROJECTS (Công trình)
   ========================================================= */
.projects{padding:72px 0;border-top:1px solid var(--concrete-100);}
.projects .section-lead{max-width:640px;}
.project-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  margin-top:40px;
}
.project-card{
  background:var(--white);border:1px solid var(--concrete-100);
  border-radius:var(--radius-md);overflow:hidden;text-align:left;
  transition:transform .2s ease, box-shadow .2s ease;
}
.project-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);}
.project-thumb{
  position:relative;display:block;width:100%;aspect-ratio:4/3;
  border:none;padding:0;margin:0;cursor:pointer;background:var(--navy-950);
  overflow:hidden;
}
.project-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.project-thumb:hover img{transform:scale(1.06);}
.project-thumb-zoom{
  position:absolute;right:12px;bottom:12px;
  width:34px;height:34px;border-radius:50%;
  background:rgba(11,21,38,0.75);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(6px);
  transition:opacity .2s ease, transform .2s ease;
}
.project-thumb:hover .project-thumb-zoom{opacity:1;transform:translateY(0);}
.project-thumb--soon{
  display:flex;align-items:center;justify-content:center;
  background:repeating-linear-gradient(135deg, var(--concrete-050), var(--concrete-050) 10px, var(--concrete-100) 10px, var(--concrete-100) 20px);
  cursor:default;
}
.project-thumb--soon span{
  font-family:var(--font-mono);font-size:0.8rem;color:var(--concrete-700);
  background:var(--white);padding:6px 14px;border-radius:999px;
}
.project-info{padding:18px 20px 22px;}
.project-info h3{font-size:1.05rem;margin-bottom:8px;}
.project-info p{font-size:0.88rem;color:var(--concrete-700);line-height:1.55;}
.project-cta{margin-top:36px;}

/* =========================================================
   LIGHTBOX
   ========================================================= */
.lightbox{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:center;justify-content:center;
  padding:24px;visibility:hidden;opacity:0;
  transition:opacity .2s ease, visibility .2s ease;
}
.lightbox.open{visibility:visible;opacity:1;}
.lightbox-backdrop{
  position:absolute;inset:0;background:rgba(8,14,26,0.92);
}
.lightbox-dialog{
  position:relative;z-index:1;width:100%;max-width:960px;
  background:var(--navy-950);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  max-height:92vh;
}
.lightbox-close{
  position:absolute;top:14px;right:14px;z-index:3;
  width:38px;height:38px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,0.12);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  transition:background .15s ease;
}
.lightbox-close:hover{background:var(--teal-500);color:var(--navy-950);}
.lightbox-stage{
  position:relative;display:flex;align-items:center;justify-content:center;
  background:var(--navy-900);
}
.lightbox-figure{margin:0;width:100%;}
.lightbox-figure img{
  width:100%;max-height:60vh;object-fit:contain;display:block;
  background:var(--navy-900);
}
.lightbox-figure figcaption{
  text-align:center;padding:10px 0;
  font-family:var(--font-mono);font-size:0.78rem;
  color:rgba(255,255,255,0.6);
}
.lightbox-nav{
  position:absolute;top:50%;transform:translateY(-50%);z-index:2;
  width:42px;height:42px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,0.12);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  transition:background .15s ease;
}
.lightbox-nav:hover{background:var(--teal-500);color:var(--navy-950);}
.lightbox-prev{left:14px;}
.lightbox-next{right:14px;}
.lightbox-meta{
  padding:22px 28px 26px;color:var(--white);overflow-y:auto;
}
.lightbox-meta h3{font-size:1.15rem;margin-bottom:16px;}
.lightbox-meta dl{display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;}
.lightbox-meta dt{
  font-family:var(--font-mono);font-size:0.72rem;text-transform:uppercase;
  letter-spacing:.05em;color:var(--teal-400);margin-bottom:4px;
}
.lightbox-meta dd{margin:0;font-size:0.9rem;line-height:1.5;color:rgba(255,255,255,0.88);}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:980px){
  .main-nav,.header-search{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
  .topbar-left a:nth-child(3){display:none;}

  .hero-inner{grid-template-columns:1fr;}
  .hero-highlight{max-width:420px;}

  .main-nav.open{
    display:block;position:fixed;inset:64px 0 0 0;
    background:var(--white);padding:20px 24px;overflow-y:auto;
    z-index:150;
  }
  .main-nav.open > ul{flex-direction:column;align-items:stretch;gap:0;}
  .main-nav.open > ul > li{border-bottom:1px solid var(--concrete-100);}
  .main-nav.open .mega-panel{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:none;flex-direction:column;gap:20px;
    padding:0 0 18px 12px;min-width:0;display:none;
  }
  .main-nav.open .has-mega.open .mega-panel{display:flex;}

  .about-inner{grid-template-columns:1fr;}
  .about-visual{order:-1;max-width:320px;}
  .fact-list{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .contact-inner{grid-template-columns:1fr;}
  .contact-panel{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .project-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:640px){
  .group-grid,.group-grid--3,.group-grid--4{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  .hero{padding:76px 0 56px;}
  .hero-stats{gap:28px;}
  .project-grid{grid-template-columns:1fr;}
  .lightbox-meta dl{grid-template-columns:1fr;}
  .lightbox-nav{width:36px;height:36px;}
  .pillars-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .contact-info,.contact-form{padding:32px 24px;}
}