/* ============================================================
   솔라트렉 청소 사례(블로그) 공용 스타일
   — 홈페이지(index.html) 디자인 시스템과 동일한 값을 사용합니다.
   — 색상/폰트/버튼 등을 바꿀 땐 홈페이지 <style>과 이 파일을 함께 맞춰주세요.
   ============================================================ */
:root{
  --blue:#0F76C4; --blue-d:#0B4F86; --blue-l:#1f8fe0;
  --ink:#0e1c29; --muted:#5b6b7a; --silver:#f1f5f9; --line:#e3e9ef; --white:#fff;
  --ease:cubic-bezier(.22,.68,.28,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --shadow-sm:0 1px 2px rgba(14,28,41,.05),0 2px 8px rgba(14,28,41,.04);
  --shadow-md:0 2px 4px rgba(14,28,41,.05),0 10px 26px rgba(14,28,41,.09);
  --shadow-lg:0 4px 10px rgba(14,28,41,.06),0 18px 40px rgba(14,28,41,.12),0 34px 76px rgba(14,28,41,.10);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-text-size-adjust:100%}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans KR',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:#fff;line-height:1.7;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(15,118,196,.16);color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.icn{display:block;width:22px;height:22px;flex:0 0 auto}
.bi{display:inline-block;width:17px;height:17px;flex:0 0 auto;vertical-align:-3px}
.btn{position:relative;display:inline-flex;align-items:center;gap:9px;border:none;cursor:pointer;font-family:inherit;
  font-weight:700;border-radius:999px;padding:15px 28px;font-size:16px;letter-spacing:-.2px;white-space:nowrap;
  transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out),background .25s var(--ease)}
.btn-primary{background:linear-gradient(160deg,var(--blue-l) 0%,var(--blue) 42%,var(--blue-d) 130%);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 2px 5px rgba(11,79,134,.28),0 12px 28px rgba(15,118,196,.36)}
.btn-primary:hover{transform:translateY(-2px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 4px 8px rgba(11,79,134,.3),0 18px 38px rgba(15,118,196,.44)}
.btn-primary:active{transform:translateY(0);transition-duration:.12s}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(28px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.09s}.reveal.d2{transition-delay:.18s}.reveal.d3{transition-delay:.27s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ===== Header (항상 scrolled 상태로 사용 — 사례 페이지엔 히어로 이미지가 없음) ===== */
header{position:fixed;top:0;left:0;right:0;z-index:50}
header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);
  box-shadow:0 1px 0 rgba(227,233,239,.9),0 8px 24px rgba(14,28,41,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{flex:0 0 auto;font-family:'Nanum Gothic',sans-serif;font-weight:800;font-size:27px;letter-spacing:-1px;color:var(--ink)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{position:relative;color:var(--muted);font-weight:500;font-size:15px;letter-spacing:-.2px;transition:color .25s var(--ease);padding:4px 0}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease-out)}
.nav-links a:not(.nav-cta):hover::after{transform:scaleX(1)}
.nav-links a:hover{color:var(--blue)}
.nav-links a.current{color:var(--blue);font-weight:700}
.nav-links a.nav-cta{flex:0 0 auto;white-space:nowrap;background:linear-gradient(160deg,var(--blue-l),var(--blue-d) 140%);color:#fff!important;padding:11px 22px;border:3px solid #ff5fa2;border-radius:999px;font-weight:700;font-size:14px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 6px 16px rgba(15,118,196,.32);transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out)}
.nav-links a.nav-cta:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 10px 22px rgba(15,118,196,.4)}
@media(max-width:960px){.nav-links{gap:16px}}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}

/* 플로팅 카톡 문의 버튼 */
.kfab{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:9px;
  background:linear-gradient(170deg,#ffef67,#FEE500 45%);color:#3C1E1E;font-weight:800;font-size:15px;padding:14px 21px;border-radius:999px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 4px 10px rgba(0,0,0,.14),0 16px 36px rgba(0,0,0,.24);
  transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out)}
.kfab:hover{transform:translateY(-3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 6px 14px rgba(0,0,0,.16),0 22px 44px rgba(0,0,0,.3)}
.kfab:active{transform:translateY(-1px)}
.kfab .ki{display:flex;align-items:center}
.kfab .ki .icn{width:19px;height:19px}
@media(max-width:520px){.kfab .kt{display:none}.kfab{padding:16px;right:14px;bottom:14px}}

/* ===== Section base ===== */
section.block{padding:clamp(88px,11vw,124px) 0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--blue);font-weight:800;font-size:12.5px;letter-spacing:.22em}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--blue-l),var(--blue))}
h1.title,h2.title{font-size:clamp(27px,4.2vw,42px);font-weight:900;letter-spacing:-.032em;margin-top:12px;line-height:1.22;text-wrap:balance}
.lead{color:var(--muted);font-size:17px;line-height:1.78;margin-top:16px;max-width:660px;letter-spacing:-.01em}

/* ===== Footer ===== */
footer{padding:52px 0 48px;text-align:center;color:var(--muted);font-size:13px;letter-spacing:-.005em;
  border-top:1px solid var(--line);background:linear-gradient(to bottom,#fff,#f7fafc)}
footer img{height:24px;margin:0 auto 14px;opacity:.9}
footer .sep{margin:0 8px;color:#c9d4de}

/* ===== 사례 목록 페이지 ===== */
.crumb{font-size:13px;color:var(--muted);margin-bottom:6px}
.crumb a{color:var(--blue);font-weight:600}
.crumb a:hover{text-decoration:underline}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:48px}
@media(max-width:940px){.pgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.pgrid{grid-template-columns:1fr}}
.pcard{display:block;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out),border-color .4s var(--ease-out)}
.pcard:hover{transform:translateY(-4px);border-color:#d3dfe9;box-shadow:0 2px 6px rgba(14,28,41,.05),0 16px 36px rgba(14,28,41,.08)}
.pcard .th{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--silver)}
.pcard .th img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease-out)}
.pcard:hover .th img{transform:scale(1.06)}
.pcard .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(7,22,40,.16)}
.pcard .play span{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(0,0,0,.25)}
.pcard .play .icn{width:20px;height:20px;color:var(--blue-d);margin-left:3px}
.pcard .bd{padding:20px 22px 24px}
.pcard .pmeta{display:flex;gap:8px;align-items:center;color:var(--blue);font-size:12.5px;font-weight:700;letter-spacing:.01em}
.pcard .pmeta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);opacity:.5}
.pcard .pmeta .loc{color:var(--muted);font-weight:600}
.pcard h3{margin-top:8px;font-size:17px;font-weight:800;letter-spacing:-.015em;line-height:1.4}
.pcard .ex{color:var(--muted);font-size:13.5px;line-height:1.65;margin-top:7px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty{margin-top:48px;padding:60px 24px;text-align:center;color:var(--muted);background:var(--silver);border-radius:20px;font-size:15px;line-height:1.7}

/* ===== 사례 상세 페이지 ===== */
.pmeta-lg{display:flex;gap:8px;align-items:center;color:var(--blue);font-size:13.5px;font-weight:700}
.pmeta-lg .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);opacity:.5}
.pmeta-lg .loc{color:var(--muted);font-weight:600}
.vwrap{position:relative;width:100%;aspect-ratio:16/9;border-radius:20px;overflow:hidden;margin-top:30px;box-shadow:var(--shadow-lg);background:#000}
.vwrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.galh{margin-top:38px;font-size:14px;font-weight:800;letter-spacing:.14em;color:var(--blue);text-transform:uppercase}
.galh+.pgal{margin-top:14px}
.pgal{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px}
@media(max-width:640px){.pgal{grid-template-columns:repeat(2,1fr)}}
.pgal img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:14px;cursor:zoom-in;transition:transform .3s var(--ease-out)}
.pgal img:hover{transform:scale(1.02)}
.prose{margin-top:32px;font-size:16px;line-height:1.9;color:var(--ink);letter-spacing:-.005em}
.prose p+p{margin-top:16px}
.postcta{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(6,14,24,.92);display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease)}
.lightbox.on{opacity:1;pointer-events:auto}
.lightbox img{max-width:min(1100px,92vw);max-height:88vh;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5)}