/* ===== Taesung E&C — shared stylesheet ===== */
:root{
  --navy:#0a1f33; --navy-2:#0e2a44; --steel:#16364f;
  --accent:#ff7a18; --accent-2:#ffb066; --cyan:#38c6e6;
  --ink:#13212e; --muted:#5b6b78; --line:#e2e8ee; --bg:#f6f8fa; --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3{line-height:1.2;font-weight:700;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}

/* NAV */
header.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(10,31,51,.86);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;letter-spacing:.02em}
.brand .logo{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:grid;place-items:center;color:#0a1f33;font-weight:900;font-size:.95rem}
.brand-img{height:42px;width:auto;display:block;background:#fff;padding:6px 12px;border-radius:8px}
footer .brand-img{height:40px}
.brand small{display:block;font-weight:500;font-size:.62rem;letter-spacing:.18em;color:var(--cyan);text-transform:uppercase}
nav.links{display:flex;gap:26px}
nav.links a{color:#cfe0ee;font-size:.9rem;font-weight:500;transition:color .2s;position:relative}
nav.links a:hover{color:#fff}
nav.links a.active{color:#fff}
nav.links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);border-radius:2px}
.nav-cta{background:var(--accent);color:#0a1f33;padding:9px 18px;border-radius:8px;font-weight:700;font-size:.88rem}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}

/* HERO (home) */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--navy)}
.hero svg.bg,.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,17,29,.92) 0%,rgba(6,17,29,.70) 42%,rgba(6,17,29,.34) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:90px;padding-bottom:60px}
.hero h1{font-size:clamp(2.1rem,5vw,3.5rem);max-width:14ch}
.hero h1 span{color:var(--accent-2)}
.hero p.lead{margin-top:22px;font-size:clamp(1.02rem,2vw,1.22rem);color:#d3e2ef;max-width:54ch}
.hero .codes{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.hero .codes span{border:1px solid rgba(255,255,255,.28);padding:6px 13px;border-radius:999px;font-size:.8rem;letter-spacing:.04em;color:#e7f1fb}
.hero .btns{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}

/* PAGE BANNER (inner pages) */
.banner{position:relative;background:linear-gradient(160deg,var(--navy),#07172a);color:#fff;padding:130px 0 56px;overflow:hidden}
.banner::after{content:"";position:absolute;right:-60px;bottom:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,138,42,.18),transparent 70%)}
.banner .crumb{font-size:.8rem;color:#8fb0cb;margin-bottom:10px}
.banner .crumb a:hover{color:#fff}
.banner h1{font-size:clamp(1.9rem,4vw,2.8rem)}
.banner p{margin-top:12px;color:#bdd2e6;max-width:60ch}

.btn{display:inline-block;padding:13px 26px;border-radius:9px;font-weight:700;font-size:.95rem;transition:transform .15s,box-shadow .2s;cursor:pointer;border:0}
.btn-primary{background:var(--accent);color:#0a1f33;box-shadow:0 10px 30px -10px rgba(255,122,24,.6)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}

/* STATS */
.stats{background:var(--navy-2);color:#fff;border-top:1px solid rgba(255,255,255,.06)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 24px}
.stat .num{font-size:2rem;font-weight:800;color:var(--accent-2)}
.stat .lbl{font-size:.86rem;color:#a9c0d4;margin-top:2px}

section{padding:80px 0}
.section-head{max-width:62ch;margin-bottom:46px}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:1.06rem}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.about-grid p{color:#3b4a57;margin-bottom:16px}
.about-card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:0 18px 40px -28px rgba(13,40,68,.4)}
.about-card h3{font-size:1.05rem;margin-bottom:16px;color:var(--navy)}
.about-card ul{list-style:none}
.about-card li{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:.94rem;color:#3b4a57}
.about-card li:last-child{border-bottom:0}
.about-card li b{color:var(--ink)}
.tick{color:var(--accent);font-weight:900}

/* HISTORY */
.timeline{list-style:none;border-left:2px solid var(--line);margin-top:10px;padding-left:26px}
.timeline li{position:relative;padding:0 0 26px}
.timeline li::before{content:"";position:absolute;left:-33px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,122,24,.18)}
.timeline .yr{font-weight:800;color:var(--navy)}
.timeline p{color:var(--muted);margin-top:2px;font-size:.95rem}

/* SERVICES */
.services{background:var(--white)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{border:1px solid var(--line);border-radius:16px;padding:26px;background:linear-gradient(180deg,#fff,#fbfdff);transition:transform .2s,box-shadow .2s,border-color .2s}
.svc:hover{transform:translateY(-4px);box-shadow:0 24px 48px -30px rgba(13,40,68,.45);border-color:#cdd9e3}
.svc .ic{width:46px;height:46px;border-radius:12px;background:var(--navy);display:grid;place-items:center;margin-bottom:16px}
.svc .ic svg{width:24px;height:24px;stroke:var(--accent-2);fill:none;stroke-width:1.7}
.svc h3{font-size:1.12rem;margin-bottom:8px;color:var(--navy)}
.svc p{color:var(--muted);font-size:.92rem;margin-bottom:14px}
.svc ul{list-style:none;display:flex;flex-wrap:wrap;gap:7px}
.svc ul li{font-size:.76rem;background:#eef3f7;color:#3f5163;padding:4px 10px;border-radius:6px;font-weight:600}

/* CODES */
.codes-sec{background:linear-gradient(160deg,var(--navy),var(--steel));color:#fff}
.codes-sec .section-head p{color:#b9cee0}
.code-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.code-chip{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:18px;text-align:center}
.code-chip b{display:block;font-size:1rem;color:var(--accent-2)}
.code-chip span{font-size:.8rem;color:#c2d4e4}
.soft-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.soft-row .t{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:#9fb6cb;margin-right:6px}
.soft-row span{border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:7px 15px;font-size:.85rem;color:#e7f1fb}

/* GALLERY */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.proj{position:relative;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--white);transition:transform .2s,box-shadow .2s;cursor:pointer}
.proj:hover{transform:translateY(-3px);box-shadow:0 22px 44px -30px rgba(13,40,68,.5)}
.proj .thumb{height:160px;overflow:hidden;background:#0f2840;position:relative}
.proj .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.proj:hover .thumb img{transform:scale(1.06)}
.proj .thumb .zoom{position:absolute;top:10px;right:10px;width:28px;height:28px;border-radius:7px;background:rgba(10,31,51,.78);display:grid;place-items:center;opacity:0;transition:opacity .2s}
.proj:hover .thumb .zoom{opacity:1}
.proj .thumb .zoom svg{width:15px;height:15px;stroke:#fff;fill:none;stroke-width:2}
.proj .meta{padding:14px 16px}
.proj .tag{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.proj h3{font-size:.98rem;margin-top:5px;color:var(--navy)}

/* LIGHTBOX */
.lb{position:fixed;inset:0;z-index:100;background:rgba(6,14,24,.94);display:none;align-items:center;justify-content:center;flex-direction:column;padding:24px}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:78vh;border-radius:8px;box-shadow:0 30px 80px -20px rgba(0,0,0,.7);background:#fff}
.lb .cap{color:#e7f1fb;margin-top:16px;font-size:1rem;text-align:center;max-width:80vw}
.lb .count{color:#7e95aa;font-size:.82rem;margin-top:4px}
.lb-btn{position:absolute;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;width:52px;height:52px;border-radius:50%;font-size:1.6rem;cursor:pointer;display:grid;place-items:center;transition:background .2s;user-select:none}
.lb-btn:hover{background:var(--accent);color:#0a1f33;border-color:var(--accent)}
.lb-prev{left:3vw;top:50%;transform:translateY(-50%)}
.lb-next{right:3vw;top:50%;transform:translateY(-50%)}
.lb-close{top:22px;right:24px;width:44px;height:44px;font-size:1.3rem}

/* TEAM */
.team{background:var(--white)}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.person{border:1px solid var(--line);border-radius:16px;padding:24px;text-align:center}
.avatar{width:72px;height:72px;border-radius:50%;margin:0 auto 14px;background:linear-gradient(135deg,var(--navy),var(--steel));display:grid;place-items:center;color:var(--accent-2);font-weight:800;font-size:1.5rem}
.person h3{font-size:1.05rem;color:var(--navy)}
.person .role{font-size:.82rem;color:var(--accent);font-weight:700;margin:3px 0 10px}
.person p{font-size:.85rem;color:var(--muted)}

/* CUSTOMER LOGOS */
.logo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.logo-card{background:var(--white);border:1px solid var(--line);border-radius:14px;height:130px;display:grid;place-items:center;padding:22px;transition:transform .2s,box-shadow .2s;filter:grayscale(.15)}
.logo-card:hover{transform:translateY(-4px);box-shadow:0 20px 44px -28px rgba(13,40,68,.45);filter:grayscale(0)}
.logo-card img{max-height:62px;width:auto;object-fit:contain}
.logo-card .name{display:none}

/* CONTACT */
.contact{background:linear-gradient(160deg,var(--navy),#07172a);color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.contact h2{font-size:clamp(1.8rem,3.6vw,2.5rem);margin-bottom:16px}
.contact p.lead{color:#bdd2e6;margin-bottom:26px;max-width:42ch}
.contact .info{list-style:none}
.contact .info li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.contact .info .k{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);min-width:84px;padding-top:2px}
.contact .info .v{color:#e7f1fb;font-size:.98rem}
.contact .info a:hover{color:var(--accent-2)}
.cform{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:28px}
.cform label{display:block;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:#9fb6cb;margin:14px 0 6px}
.cform input,.cform textarea{width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:9px;padding:11px 13px;color:#fff;font-size:.95rem;font-family:inherit}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--accent)}
.cform button{margin-top:20px;width:100%;background:var(--accent);color:#0a1f33;border:none;padding:13px;border-radius:9px;font-weight:800;font-size:.98rem;cursor:pointer}

/* CTA band */
.cta-band{background:var(--white);border-top:1px solid var(--line)}
.cta-band .box{background:linear-gradient(135deg,var(--navy),var(--steel));border-radius:20px;padding:46px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(1.5rem,3vw,2rem)}
.cta-band p{color:#bdd2e6;margin-top:6px}

footer{background:#06121f;color:#8aa2b7;padding:34px 0;font-size:.85rem}
footer .fwrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;max-width:1120px;margin:0 auto;padding:0 24px}
footer h4{color:#fff;font-size:.95rem;margin-bottom:12px}
footer a{display:block;color:#8aa2b7;padding:3px 0}
footer a:hover{color:var(--accent-2)}
footer .copy{border-top:1px solid rgba(255,255,255,.08);margin-top:26px;padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media(max-width:880px){
  nav.links,.nav-cta{display:none}
  .menu-btn{display:block}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .svc-grid,.proj-grid,.team-grid,.code-grid,.stats .wrap,.logo-grid{grid-template-columns:1fr 1fr}
  footer .fwrap{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .svc-grid,.proj-grid,.team-grid,.code-grid,.stats .wrap{grid-template-columns:1fr}
  .lb-prev{left:8px}.lb-next{right:8px}
  .lb-btn{width:44px;height:44px;font-size:1.3rem}
  .lb img{max-height:66vh}
}