/*
Theme Name: GNS Sign LED Display
Description: LED전광판제작 전문 사이트 (leddisplay.gnssign.com) 전용 테마
Author: G&S간판
Version: 1.0
*/

/* ===== Design tokens (industrial spec-sheet) ===== */
:root{
  --ink:#10151f;
  --ink-soft:#4c5568;
  --paper:#f5f6f8;
  --surface:#ffffff;
  --line:#e3e6ec;
  --signal:#ff7a1a;
  --signal-dark:#e0670a;
  --steel:#2b5797;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 6px 22px rgba(16,21,31,.08);
  --font-head:'IBM Plex Sans KR',sans-serif;
  --font-body:'IBM Plex Sans KR',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
  overflow-wrap:break-word;
}
h1,h2,h3{font-family:var(--font-head);font-weight:700;line-height:1.35;margin:0 0 .6em;color:var(--ink)}
h1{font-size:clamp(2rem,5vw,3.1rem)}
h2{font-size:clamp(1.35rem,3vw,1.9rem);margin-top:2.4em}
h3{font-size:1.1rem}
p{margin:0 0 1.1em}
a{color:inherit}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.eyebrow-label{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.14em;color:var(--signal-dark);font-weight:600;text-transform:uppercase}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,246,248,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;font-size:1.1rem;text-decoration:none;color:var(--ink);white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:8px;flex:none}
.header-right{display:flex;align-items:center;gap:20px}
.site-nav{display:flex;gap:20px;font-size:.92rem}
.site-nav a{text-decoration:none;color:var(--ink-soft);font-weight:500;padding-bottom:3px;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--ink);border-color:var(--signal)}
.header-cta{background:var(--signal);color:#fff;padding:10px 18px;border-radius:var(--radius-sm);font-weight:700;font-size:.88rem;text-decoration:none;white-space:nowrap;flex:none}
.header-cta:hover{background:var(--signal-dark)}
.cta-short{display:none}
.hamburger{display:none;flex:none;width:38px;height:38px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;position:relative;cursor:pointer}
.hamburger span,.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:9px;right:9px;height:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.hamburger span{top:18px}
.hamburger span::before{top:-7px}
.hamburger span::after{top:7px}
.hamburger[aria-expanded="true"] span{background:transparent}
.hamburger[aria-expanded="true"] span::before{transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span::after{transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{display:none}

/* ===== Hero (photo + dot-matrix overlay, left-aligned) ===== */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,21,31,.94) 0%,rgba(16,21,31,.72) 40%,rgba(16,21,31,.28) 78%)}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1.5px);background-size:6px 6px;mix-blend-mode:screen}
.hero-inner{position:relative;z-index:1;padding:96px 0 60px;max-width:680px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:#ffd9b8;background:rgba(255,122,26,.14);border:1px solid rgba(255,122,26,.4);padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero .eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--signal);box-shadow:0 0 6px var(--signal);animation:liveBlink 1.6s ease-in-out infinite}
@keyframes liveBlink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{color:#fff;text-align:left}
.hero .lead{max-width:520px;margin:0 0 30px;color:#d7dbe4;font-size:1.05rem;text-align:left}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:var(--radius-sm);font-weight:700;font-size:.98rem;text-decoration:none;transition:transform .15s ease,background .15s ease;border:1.5px solid transparent;cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--signal);color:#fff}
.btn-primary:hover{background:var(--signal-dark)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline:hover{border-color:#fff}
.btn-lg{padding:16px 32px;font-size:1.02rem}
.section-alt .btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}

/* Spec strip below hero */
.spec-strip{background:#161c29;border-top:1px solid rgba(255,255,255,.08)}
.spec-strip .wrap{display:flex;flex-wrap:wrap;gap:0}
.spec-item{flex:1 1 140px;padding:16px 22px;border-right:1px solid rgba(255,255,255,.08);font-family:var(--font-mono)}
.spec-item:last-child{border-right:none}
.spec-item .spec-k{display:block;font-size:.7rem;letter-spacing:.1em;color:#8b93a7;text-transform:uppercase;margin-bottom:4px}
.spec-item .spec-v{font-size:.86rem;color:#e7eaf2;font-weight:600}

/* ===== Sections ===== */
.section{padding:56px 0}
.section-alt{background:var(--surface)}

/* ===== Tables ===== */
.table-wrap{overflow-x:auto;margin:1.4em 0;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;background:#fff;font-size:.94rem}
table caption{text-align:left;padding:12px 16px;font-weight:700;background:var(--ink);color:#fff;font-family:var(--font-mono);font-size:.85rem;letter-spacing:.02em}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--paper);font-family:var(--font-head);font-weight:700}
tr:last-child td{border-bottom:none}

/* ===== Cards / grid (corner-bracket signature) ===== */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card::before,.card::after{content:"";position:absolute;width:14px;height:14px;border:2px solid var(--signal);opacity:.7}
.card::before{top:-1px;left:-1px;border-right:none;border-bottom:none}
.card::after{bottom:-1px;right:-1px;border-left:none;border-top:none}
.card h3{margin-top:0}
.card .tag{display:inline-block;font-family:var(--font-mono);font-size:.7rem;color:var(--steel);background:#eaf0fa;padding:3px 9px;border-radius:4px;margin-bottom:10px;letter-spacing:.03em}
.icon-card{text-align:center;padding:20px 14px}
.icon-card .ic{font-family:var(--font-mono);font-size:.72rem;color:var(--signal-dark);letter-spacing:.06em;margin-bottom:8px}
.icon-card h3{font-size:.98rem;margin:0}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;text-align:center;position:relative}
.step-num{width:34px;height:34px;border-radius:var(--radius-sm);margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-family:var(--font-mono);color:#fff;background:var(--ink)}
.check-card{position:relative;padding-top:30px}
.check-card h3{margin-bottom:6px;font-size:1rem}
.check-card p{margin:0;color:var(--ink-soft);font-size:.92rem}
.check-badge{position:absolute;top:-13px;left:20px;width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:.85rem;font-family:var(--font-mono);background:var(--signal)}

/* ===== Image reveal / frame ===== */
.reveal-img{opacity:0;transform:translateY(16px);animation:revealUp .7s ease forwards}
.reveal-img.d1{animation-delay:.08s}
.reveal-img.d2{animation-delay:.16s}
.reveal-img.d3{animation-delay:.24s}
@keyframes revealUp{to{opacity:1;transform:none}}
.figure{margin:0}
.figure figcaption{font-size:.85rem;color:var(--ink-soft);margin-top:8px}
.img-frame{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.img-frame img{border-radius:0;transition:transform .5s ease}
.img-frame:hover img{transform:scale(1.04)}
.type-card{padding-top:0;overflow:hidden}
.type-card-img{margin:0 -22px 18px;border-radius:0;border:none;border-bottom:1px solid var(--line)}
.type-card-img img{aspect-ratio:4/3;width:100%;height:100%;object-fit:cover}
.type-card .tag{margin-top:2px}
@media (max-width:480px){
  .type-card-img{margin:0 -16px 16px}
}
.env-split{align-items:stretch}
.env-split-img{display:flex;flex-direction:column}
.env-split-img img{flex:1;width:100%;height:100%;object-fit:cover}
@media (max-width:820px){
  .env-split-img{aspect-ratio:4/3}
  .env-split-img img{aspect-ratio:4/3}
}

/* Pixel-pitch diagram */
.pitch-diagram{display:flex;align-items:center;gap:28px;flex-wrap:wrap;background:var(--ink);border-radius:var(--radius);padding:28px;color:#fff}
.pitch-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:4px;width:180px;flex:none}
.pitch-grid span{aspect-ratio:1;background:#2a3244;border-radius:2px}
.pitch-grid span:nth-child(3n){background:var(--signal)}
.pitch-note{font-size:.92rem;color:#d7dbe4}
.pitch-note strong{color:#fff}
.pitch-arrow{font-family:var(--font-mono);font-size:.78rem;color:#8b93a7}

/* ===== FAQ ===== */
.faq-list{margin-top:1em}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"[+]";font-family:var(--font-mono);font-size:.85rem;color:var(--signal-dark);flex:none}
.faq-item[open] summary::after{content:"[–]"}
.faq-item .faq-a{padding:0 18px 16px;color:var(--ink-soft)}
#faq-more{display:none}
#faq-more.open{display:block}
.faq-more-btn{display:block;margin:10px auto 0;background:var(--ink);color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-sm);font-weight:700;cursor:pointer;font-family:var(--font-mono);font-size:.85rem}

/* Breadcrumb */
.breadcrumb{font-size:.82rem;color:var(--ink-soft);padding:14px 0 0}
.breadcrumb a{color:var(--steel);text-decoration:none}

/* ===== CTA banner ===== */
.cta-banner{background:var(--ink);color:#fff;border-radius:var(--radius);padding:44px 30px;text-align:center;margin:24px 0}
.cta-banner h2{margin-top:0;color:#fff}
.cta-banner p{color:#c7cbd6}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:#c7cbd6;padding:44px 0 26px;margin-top:60px}
.site-footer a{text-decoration:none}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
.foot-block h4{font-family:var(--font-head);margin:0 0 10px;color:#fff;font-size:1rem}
.foot-block p{margin:0 0 4px;font-size:.9rem;color:#a7adbc}
.foot-nap{font-size:.83rem;color:#7d8494;margin-top:26px;border-top:1px solid #2a3244;padding-top:18px}

/* ===== Utility ===== */
.center{text-align:center}
.small{font-size:.85rem;color:var(--ink-soft)}
.mt0{margin-top:0}
.br-mobile{display:none}

/* ===== Mobile ===== */
@media (max-width:820px){
  .grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr}
  .site-nav{display:none}
  .hamburger{display:block}
  .mobile-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .mobile-nav.open{display:block}
  .mobile-nav a{display:block;padding:14px 24px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600}
  .site-footer .wrap{flex-direction:column}
  .hero-inner{padding:64px 0 44px}
  .spec-item{flex:1 1 45%}
}
@media (max-width:480px){
  .wrap{padding:0 20px}
  .cta-full{display:none}
  .cta-short{display:inline}
  .header-cta{padding:8px 14px;font-size:.82rem}
  .hero-inner{padding:52px 0 36px}
  .hero .lead{font-size:1rem}
  .br-mobile{display:block}
  .cta-banner{padding:32px 20px}
  .step-card,.card{padding:18px 16px}
  th,td{padding:11px 12px;font-size:.87rem}
  .pitch-diagram{flex-direction:column;text-align:center}
  .table-stack thead{display:none}
  .table-stack,.table-stack tbody,.table-stack tr,.table-stack td{display:block;width:100%}
  .table-stack{background:none;box-shadow:none}
  .table-stack caption{display:block;width:100%;border-radius:var(--radius) var(--radius) 0 0;margin-bottom:12px}
  .table-stack tr{margin-bottom:12px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;background:#fff}
  .table-stack td{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);text-align:right}
  .table-stack td:last-child{border-bottom:none}
  .table-stack td::before{content:attr(data-label);font-weight:700;color:var(--ink);text-align:left;flex:none}
}