/* ============================================================
   윈도우LAB (WINDOW LAB) — 다크 테크 · 네온 라임
   near-black + grid + glow / 네온 단일 강조 / 라운드 카드
   ============================================================ */
:root{
  --bg:#0a0b0d;
  --bg-2:#101217;
  --bg-3:#161920;
  --line:#22262e;
  --line-2:#2c313b;
  --tx:#f2f4f7;
  --tx-2:#9aa2ae;
  --tx-3:#666d79;
  --neon:#c5f542;
  --neon-d:#a8db22;
  --neon-soft:rgba(197,245,66,.12);
  --sans:"Pretendard",-apple-system,"Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --wrap:1200px;
  --read:720px;
  --r:16px;
}
*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--tx); font-family:var(--sans);
  line-height:1.65; -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:64px 64px;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ word-break:keep-all; letter-spacing:-.025em; }

.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 24px; position:relative; z-index:1; }
@media (max-width:640px){ .wrap{ padding:0 16px; } }

/* 네온 글로우(장식) */
.glow{ position:absolute; border-radius:50%; filter:blur(90px); pointer-events:none; z-index:0; }

/* ── 헤더 ─────────────────────────────────────────────────── */
.nav{ display:flex; align-items:center; gap:20px; padding:20px 0; }
.logo{ font-size:19px; font-weight:800; letter-spacing:-.03em; }
.logo .en{ letter-spacing:0; }   /* 국문+LAB 혼용 시 영문 자간 보정 */
.logo .dot{ color:var(--neon); }
.nav-links{ display:flex; gap:26px; margin-left:auto; }
.nav-links a{ font-size:14px; font-weight:600; color:var(--tx-2); transition:color .15s; }
.nav-links a:hover, .nav-links a[aria-current="page"]{ color:var(--tx); }
@media (max-width:820px){
  .nav-links{ display:none; }
  .navbar-m{ display:flex; gap:8px; overflow-x:auto; padding:0 0 14px; scrollbar-width:none; }
  .navbar-m::-webkit-scrollbar{ display:none; }
  .navbar-m a{ flex:0 0 auto; font-size:13px; font-weight:700; color:var(--tx-2);
    border:1px solid var(--line); border-radius:999px; padding:8px 14px; }
  .navbar-m a[aria-current="page"]{ color:#0a0b0d; background:var(--neon); border-color:var(--neon); }
}
@media (min-width:821px){ .navbar-m{ display:none; } }

/* 버튼 */
.btn{ display:inline-flex; align-items:center; gap:8px; font-family:inherit; font-weight:800;
  font-size:14px; padding:12px 22px; border-radius:999px; border:0; cursor:pointer;
  background:var(--neon); color:#0a0b0d; transition:transform .14s, box-shadow .14s, background .14s; }
.btn:hover{ transform:translateY(-1px); background:var(--neon-d);
  box-shadow:0 8px 26px -10px rgba(197,245,66,.6); }
.btn--ghost{ background:transparent; color:var(--tx); border:1px solid var(--line-2); }
.btn--ghost:hover{ background:var(--bg-3); box-shadow:none; }
.btn--sm{ font-size:13px; padding:10px 18px; }

/* ── 히어로 ───────────────────────────────────────────────── */
.hero{ position:relative; padding:44px 0 62px; overflow:hidden; }
.hero .glow--a{ width:520px; height:520px; left:-120px; top:-140px; background:rgba(197,245,66,.14); }
.hero .glow--b{ width:460px; height:460px; right:-100px; top:60px; background:rgba(120,200,255,.07); }
.hero-in{ position:relative; z-index:1; display:grid; grid-template-columns:minmax(0,1.06fr) minmax(0,1fr);
  gap:52px; align-items:center; }
@media (max-width:900px){ .hero-in{ grid-template-columns:1fr; gap:34px; } }

.eyebrow{ display:inline-flex; align-items:center; gap:8px; font-size:11.5px; font-weight:800;
  letter-spacing:.14em; text-transform:uppercase; color:var(--neon); margin-bottom:18px; }
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--neon); }
.hero h1{ font-size:clamp(32px,5vw,54px); font-weight:800; line-height:1.16; margin:0 0 20px; }
.hero h1 .n{ color:var(--neon); }
.hero h1 .m{ color:var(--tx-3); }
.hero .sub{ font-size:16px; color:var(--tx-2); line-height:1.75; margin:0 0 28px; max-width:52ch; }
.hero-cta{ display:flex; gap:12px; flex-wrap:wrap; align-items:center; }

/* 히어로 우측: 대표 기사 카드 */
.spot{ position:relative; }
.spot .card{ position:relative; border:1px solid var(--line); border-radius:22px; overflow:hidden;
  background:var(--bg-2); box-shadow:0 30px 70px -30px rgba(0,0,0,.9); }
.spot .thumb{ aspect-ratio:4/3; }
.spot .meta{ padding:18px 20px 20px; }
.spot .tag{ display:inline-block; font-size:10.5px; font-weight:800; letter-spacing:.1em;
  text-transform:uppercase; color:var(--neon); background:var(--neon-soft);
  border:1px solid rgba(197,245,66,.25); padding:4px 10px; border-radius:999px; }
.spot h2{ font-size:19px; font-weight:700; line-height:1.42; margin:13px 0 8px; }
.spot p{ margin:0; font-size:13.5px; color:var(--tx-2); line-height:1.6; }
.spot .card:hover h2{ color:var(--neon); }
.spot .orbit{ position:absolute; inset:-26px; border:1px solid rgba(197,245,66,.16);
  border-radius:50%; pointer-events:none; }
.spot .orbit::after{ content:""; position:absolute; left:14%; top:6%; width:10px; height:10px;
  border-radius:50%; background:var(--neon); box-shadow:0 0 16px 3px rgba(197,245,66,.7); }
@media (max-width:900px){ .spot .orbit{ display:none; } }

/* 썸네일 공통 */
.thumb{ position:relative; overflow:hidden; background:var(--c,#16323d); }
.thumb img{ width:100%; height:100%; object-fit:cover; }
.thumb--fallback{ background-image:
    radial-gradient(120% 120% at 20% 12%, color-mix(in srgb,var(--c,#16323d) 70%,#000) 0%, transparent 60%),
    linear-gradient(150deg, color-mix(in srgb,var(--c,#16323d) 90%,var(--neon) 10%), #0b0d10); }
.thumb--fallback::after{ content:""; position:absolute; inset:0; opacity:.5;
  background:center/30% no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cg fill='none' stroke='%23c5f542' stroke-opacity='.5' stroke-width='2' stroke-linejoin='round'%3E%3Crect x='24' y='14' width='52' height='72' rx='2'/%3E%3Cline x1='50' y1='14' x2='50' y2='86'/%3E%3Cline x1='24' y1='50' x2='76' y2='50'/%3E%3C/g%3E%3C/svg%3E"); }

/* ── 섹션 헤더 ────────────────────────────────────────────── */
.sec{ position:relative; padding:60px 0 0; }
.sec-head{ display:flex; align-items:flex-end; gap:16px; margin-bottom:26px; flex-wrap:wrap; }
.sec-head h2{ font-size:clamp(24px,3.2vw,34px); font-weight:800; line-height:1.25; margin:0; }
.sec-head h2 .n{ color:var(--neon); }
.sec-head p{ margin:0 0 4px auto; max-width:38ch; font-size:13.5px; color:var(--tx-2); line-height:1.7; }

/* ── 넘버 카드(01/02/03 · 가운데 네온) ────────────────────── */
.nums{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
@media (max-width:820px){ .nums{ grid-template-columns:1fr; } }
.num{ display:block; border:1px solid var(--line); border-radius:var(--r); background:var(--bg-2);
  padding:26px 24px 24px; transition:transform .16s, border-color .16s, background .16s; }
.num:hover{ transform:translateY(-3px); border-color:var(--line-2); }
.num .no{ font-family:var(--mono); font-size:13px; font-weight:700; color:var(--neon); letter-spacing:.06em; }
.num .cat{ display:block; margin:16px 0 9px; font-size:11px; font-weight:800; letter-spacing:.1em;
  text-transform:uppercase; color:var(--tx-3); }
.num h3{ font-size:18px; font-weight:700; line-height:1.45; margin:0 0 10px; }
.num p{ margin:0 0 16px; font-size:13.5px; color:var(--tx-2); line-height:1.62; }
.num .go{ font-size:13px; font-weight:800; color:var(--neon); }
.num .go::after{ content:" →"; }
/* 가운데 카드 = 네온 채움 */
.num--hi{ background:var(--neon); border-color:var(--neon); color:#0a0b0d; }
.num--hi .no{ color:#0a0b0d; opacity:.6; }
.num--hi .cat{ color:rgba(10,11,13,.6); }
.num--hi p{ color:rgba(10,11,13,.78); }
.num--hi .go{ color:#0a0b0d; }
.num--hi:hover{ background:var(--neon-d); }

/* ── 기사 그리드 ──────────────────────────────────────────── */
.grid{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px; }
@media (max-width:900px){ .grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .grid{ grid-template-columns:1fr; } }
.card{ display:block; border:1px solid var(--line); border-radius:var(--r); overflow:hidden;
  background:var(--bg-2); transition:transform .16s, border-color .16s; }
.card:hover{ transform:translateY(-3px); border-color:rgba(197,245,66,.4); }
.card .thumb{ aspect-ratio:16/10; }
.card .body{ padding:17px 18px 19px; }
.card .cat{ font-size:10.5px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:var(--neon); }
.card h3{ font-size:16.5px; font-weight:700; line-height:1.45; margin:10px 0 8px; }
.card p{ margin:0 0 10px; font-size:13px; color:var(--tx-2); line-height:1.6; }
.card .date{ font-size:11.5px; color:var(--tx-3); font-family:var(--mono); }

/* ── 랩 섹션(카테고리 타일) ───────────────────────────────── */
.labs{ display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px; }
@media (max-width:900px){ .labs{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .labs{ grid-template-columns:1fr; } }
.lab{ display:block; border:1px solid var(--line); border-radius:var(--r); background:var(--bg-2);
  padding:22px 20px; transition:border-color .16s, background .16s; }
.lab:hover{ border-color:rgba(197,245,66,.4); background:var(--bg-3); }
.lab-t{ display:block; }              /* 제목 블록만 링크(중첩 <a> 방지) */
.lab .k{ font-family:var(--mono); font-size:11.5px; color:var(--neon); letter-spacing:.06em; }
.lab h4{ font-size:16px; font-weight:800; margin:12px 0 6px; transition:color .15s; }
.lab-t:hover h4{ color:var(--neon); }
.lab p{ margin:0 0 14px; font-size:12.5px; color:var(--tx-3); line-height:1.6; }
.lab ul{ list-style:none; margin:0; padding:0; }
.lab li{ border-top:1px solid var(--line); }
.lab li a{ display:block; padding:9px 0; font-size:13px; color:var(--tx-2); line-height:1.5; }
.lab li a:hover{ color:var(--neon); }
.lab .empty{ border-top:1px solid var(--line); padding:9px 0; font-size:12.5px; color:var(--tx-3); }

/* ── 질문 칩 ──────────────────────────────────────────────── */
.qs{ display:flex; flex-wrap:wrap; gap:10px; }
.qs a{ display:inline-flex; align-items:center; gap:9px; border:1px solid var(--line);
  background:var(--bg-2); border-radius:999px; padding:11px 18px; font-size:13.5px;
  font-weight:600; color:var(--tx-2); transition:.15s; }
.qs a::before{ content:"Q"; font-family:var(--mono); font-weight:800; color:var(--neon); }
.qs a:hover{ color:var(--tx); border-color:rgba(197,245,66,.45); background:var(--bg-3); }

/* ── 전환 배너 ────────────────────────────────────────────── */
.cta{ position:relative; overflow:hidden; display:flex; align-items:center; gap:18px;
  margin:26px 0 0; padding:22px 24px; border:1px solid rgba(197,245,66,.3); border-radius:var(--r);
  background:linear-gradient(100deg, rgba(197,245,66,.10), rgba(197,245,66,.02) 60%, transparent);
  transition:border-color .16s, background .16s; }
.cta:hover{ border-color:rgba(197,245,66,.6); }
.cta .tag{ flex:0 0 auto; font-size:10.5px; font-weight:800; letter-spacing:.1em; text-transform:uppercase;
  color:#0a0b0d; background:var(--neon); padding:5px 10px; border-radius:6px; }
.cta .txt{ flex:1 1 auto; min-width:0; }
.cta .txt strong{ display:block; font-size:16.5px; font-weight:800; line-height:1.4; }
.cta .txt span{ display:block; margin-top:4px; font-size:12px; color:var(--tx-3); }
.cta .go{ flex:0 0 auto; font-size:13.5px; font-weight:800; color:var(--neon); white-space:nowrap; }
.cta .go::after{ content:" →"; }
@media (max-width:640px){
  .cta{ gap:12px; padding:16px 16px; }
  .cta .txt strong{ font-size:14.5px; }
  .cta .go{ font-size:12.5px; }
}

/* ── 기사 페이지 ──────────────────────────────────────────── */
.article{ max-width:var(--read); margin:0 auto; padding:34px 0 0; }
.article .tag{ display:inline-block; font-size:10.5px; font-weight:800; letter-spacing:.1em;
  text-transform:uppercase; color:var(--neon); background:var(--neon-soft);
  border:1px solid rgba(197,245,66,.25); padding:5px 11px; border-radius:999px; }
.article h1{ font-size:clamp(28px,4.4vw,42px); font-weight:800; line-height:1.24; margin:18px 0 14px; }
.article .dek{ font-size:17px; color:var(--tx-2); line-height:1.72; margin:0 0 20px; }
.article .meta{ display:flex; gap:14px; flex-wrap:wrap; font-size:11.5px; color:var(--tx-3);
  font-family:var(--mono); border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:12px 0; }
.article .hero-img{ margin:24px 0 4px; border-radius:var(--r); overflow:hidden; border:1px solid var(--line); }
.article .hero-img .thumb{ aspect-ratio:16/9; }

.prose{ font-size:17px; line-height:1.88; color:#dfe3e9; }
.prose p{ margin:0; }
.prose ul,.prose ol{ margin:0; padding-left:22px; }
.prose li{ margin:.5em 0; }
.prose > * + *{ margin-top:1.55em; }
.prose h2{ font-size:23px; font-weight:800; line-height:1.4; margin-top:2.5em; color:var(--tx);
  padding-top:.6em; border-top:1px solid var(--line); }
.prose h3{ font-size:19px; font-weight:700; margin-top:2em; color:var(--tx); }
.prose strong{ font-weight:700; color:#fff; }
.prose a{ color:var(--neon); text-underline-offset:3px; text-decoration:underline; }
.prose a.cta{ text-decoration:none; color:inherit; }
.prose blockquote{ margin:1.6em 0; padding:14px 18px; border-left:3px solid var(--neon);
  background:var(--bg-2); border-radius:0 10px 10px 0; color:var(--tx-2); }
.prose table{ width:100%; border-collapse:collapse; font-size:14.5px; }
.prose th,.prose td{ border:1px solid var(--line); padding:10px 12px; text-align:left; }
.prose thead th{ background:var(--bg-3); color:var(--tx); font-size:12.5px; letter-spacing:.04em; }
.prose figure{ margin:0; }
.prose figcaption{ margin-top:9px; font-size:12px; color:var(--tx-3); text-align:center; }
.prose img{ width:100%; height:auto; border-radius:12px; }

/* FAQ */
.faq{ max-width:var(--read); margin:46px auto 0; }
.faq h2{ font-size:21px; font-weight:800; margin:0 0 10px; }
.faq details{ border:1px solid var(--line); border-radius:12px; background:var(--bg-2);
  margin-bottom:10px; overflow:hidden; }
.faq summary{ cursor:pointer; list-style:none; position:relative; padding:16px 46px 16px 18px;
  font-weight:700; font-size:15.5px; line-height:1.5; }
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:"+"; position:absolute; right:18px; top:14px; font-size:19px;
  color:var(--neon); transition:transform .4s cubic-bezier(.22,1.1,.36,1); }
.faq details.faq-open{ border-color:rgba(197,245,66,.35); }
.faq details.faq-open summary::after{ transform:rotate(45deg); }
.faq .a{ padding:0 18px 16px; font-size:15px; line-height:1.78; color:var(--tx-2);
  overflow:hidden; transition:height .4s cubic-bezier(.22,1.1,.36,1), opacity .3s ease; }

.related{ max-width:var(--read); margin:44px auto 0; }

/* 카테고리 페이지 헤더 */
.lab-head{ padding:40px 0 8px; position:relative; }
.lab-head .k{ font-family:var(--mono); font-size:12px; color:var(--neon); letter-spacing:.08em; }
.lab-head h1{ font-size:clamp(30px,4.6vw,44px); font-weight:800; margin:14px 0 10px; }
.lab-head p{ margin:0; max-width:52ch; font-size:15px; color:var(--tx-2); }

/* ── 푸터 ─────────────────────────────────────────────────── */
.foot{ margin-top:70px; border-top:1px solid var(--line); background:#08090b; }
.foot .in{ padding:34px 0 44px; display:flex; flex-wrap:wrap; gap:24px 40px; justify-content:space-between; }
.foot .logo{ font-size:20px; }
.foot p{ margin:10px 0 0; font-size:12.5px; color:var(--tx-3); max-width:44ch; line-height:1.7; }
.foot nav{ display:flex; gap:18px; flex-wrap:wrap; }
.foot nav a{ font-size:13px; color:var(--tx-2); }
.foot nav a:hover{ color:var(--neon); }
.foot .copy{ width:100%; border-top:1px solid var(--line); padding-top:16px;
  font-size:11.5px; color:var(--tx-3); font-family:var(--mono); }

@media (prefers-reduced-motion:reduce){ *{ transition:none !important; } }