/* ==========================================================================
   어반픽스 실링팬 — PURE AIR / CLEAR BREEZE / OPEN CEILING
   ========================================================================== */

:root{
  --c-aqua:#7DE8E8;
  --c-mint:#5DD8E0;
  --c-cyan:#38BFE0;
  --c-sky:#2E9BDE;
  --c-blue:#2C6FE0;

  --bg-white:#ffffff;
  --bg-cool:#F4F8FB;
  --bg-cool-2:#EEF4FA;
  --ink-900:#101826;
  --ink-700:#33404F;
  --ink-500:#63707E;
  --ink-300:#9AA7B4;
  --line:#E3EAF1;

  --grad-air: linear-gradient(100deg, var(--c-aqua) 0%, var(--c-mint) 28%, var(--c-cyan) 55%, var(--c-sky) 78%, var(--c-blue) 100%);
  --shadow-soft: 0 20px 60px -20px rgba(44,111,224,0.18);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --maxw: 1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
  color:var(--ink-700);
  background:var(--bg-white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  word-break:keep-all;
  overflow-wrap:break-word;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink-900);margin:0;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.grad-text{
  background:var(--grad-air);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* reveal-on-scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s ease, transform .8s ease}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* ==========================================================================
   background air texture
   ========================================================================== */
.air-bg{position:relative;overflow:hidden}
.air-bg::before{
  content:"";position:absolute;inset:-10% -10% auto auto;width:60vw;height:60vw;max-width:640px;max-height:640px;
  background:radial-gradient(circle, rgba(56,191,224,0.10) 0%, rgba(56,191,224,0) 70%);
  border-radius:50%;pointer-events:none;
}
.air-bg::after{
  content:"";position:absolute;inset:auto auto -15% -10%;width:50vw;height:50vw;max-width:520px;max-height:520px;
  background:radial-gradient(circle, rgba(44,111,224,0.08) 0%, rgba(44,111,224,0) 70%);
  border-radius:50%;pointer-events:none;
}
.air-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(56,191,224,0.05) 1px, transparent 1px),linear-gradient(90deg, rgba(56,191,224,0.05) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.air-line{position:absolute;pointer-events:none;opacity:.55}

@keyframes drift{
  0%{transform:translateX(-6%)}
  50%{transform:translateX(6%)}
  100%{transform:translateX(-6%)}
}
.air-line svg{animation:drift 14s ease-in-out infinite}

/* ==========================================================================
   header
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:1.25rem;font-weight:800;letter-spacing:-.02em;color:var(--ink-900)}
.logo span{color:var(--c-blue)}
.nav{display:flex;align-items:center;gap:8px}
.nav a{
  padding:9px 16px;border-radius:999px;font-size:.92rem;font-weight:600;color:var(--ink-700);
  transition:background .2s, color .2s;
}
.nav a:hover{background:var(--bg-cool-2);color:var(--c-blue)}
.nav a.cta-btn{
  background:var(--grad-air);color:#fff;padding:10px 20px;box-shadow:var(--shadow-soft);
}
.nav a.cta-btn:hover{filter:brightness(1.05)}

/* ==========================================================================
   hero — AIR VISUAL
   ========================================================================== */
.hero{position:relative;padding:64px 0 40px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;position:relative;z-index:2}
.hero-eyebrow{
  font-size:.78rem;letter-spacing:.18em;font-weight:700;color:var(--c-sky);
  text-transform:uppercase;margin-bottom:14px;
}
.hero-title{
  font-size:clamp(3.2rem, 9vw, 6.2rem);font-weight:800;letter-spacing:-.03em;line-height:.98;
  margin-bottom:20px;
}
.hero-sub{font-size:1.1rem;color:var(--ink-500);margin-bottom:30px;max-width:420px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:15px 26px;border-radius:999px;
  font-weight:700;font-size:.98rem;border:none;
}
.btn-primary{background:var(--grad-air);color:#fff;box-shadow:var(--shadow-soft)}
.btn-ghost{background:var(--bg-cool);color:var(--ink-700);border:1px solid var(--line)}
.btn:hover{filter:brightness(1.04)}

.hero-object{position:relative;display:flex;align-items:center;justify-content:center}
.hero-object .ring{
  position:absolute;border-radius:50%;border:1px solid rgba(56,191,224,0.25);
}
.hero-object .ring.r1{width:92%;height:92%;animation:spinSlow 40s linear infinite}
.hero-object .ring.r2{width:70%;height:70%;border-style:dashed;animation:spinSlow 60s linear infinite reverse}
@keyframes spinSlow{to{transform:rotate(360deg)}}
.hero-photo{
  position:relative;width:78%;aspect-ratio:1/1;border-radius:50%;overflow:hidden;
  box-shadow:0 30px 80px -20px rgba(44,111,224,0.35);
  border:6px solid #fff;
}
.hero-photo img{width:100%;height:100%;object-fit:cover}

/* ==========================================================================
   top real-image band (네이버 이미지 대응)
   ========================================================================== */
.image-band{padding:10px 0 70px}
.image-band figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;position:relative;box-shadow:var(--shadow-soft)}
.image-band img{width:100%;height:clamp(280px,42vw,520px);object-fit:cover;transition:transform .6s ease}
.image-band figure:hover img{transform:scale(1.03)}
.image-band figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 26px;
  background:linear-gradient(0deg, rgba(16,24,38,0.55), transparent);
  color:#fff;font-weight:700;font-size:1rem;
}

/* ==========================================================================
   section shell
   ========================================================================== */
section{padding:96px 0}
.section-head{max-width:640px;margin-bottom:56px}
.section-eyebrow{font-size:.78rem;letter-spacing:.16em;font-weight:700;color:var(--c-cyan);text-transform:uppercase;margin-bottom:12px}
.section-title{font-size:clamp(1.9rem,3.6vw,2.7rem);font-weight:800;letter-spacing:-.02em}
.section-desc{margin-top:16px;color:var(--ink-500);font-size:1.02rem}

/* ==========================================================================
   AIR FLOW section
   ========================================================================== */
.flow{position:relative}
.flow-path{position:relative;max-width:720px;margin:0 auto 20px}
.flow-step{
  display:flex;align-items:flex-start;gap:20px;padding:26px 0;border-bottom:1px dashed var(--line);
}
.flow-step:last-child{border-bottom:none}
.flow-num{
  flex:none;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:.95rem;color:#fff;background:var(--grad-air);
}
.flow-step h3{font-size:1.15rem;margin-bottom:6px}
.flow-step p{color:var(--ink-500);font-size:.96rem}

/* ==========================================================================
   공간별 실링팬 — irregular composition
   ========================================================================== */
.spaces{position:relative}
.space-grid{
  display:grid;grid-template-columns:repeat(12,1fr);gap:20px;
}
.space-card{
  position:relative;border-radius:var(--radius-md);overflow:hidden;background:var(--bg-cool);
  box-shadow:var(--shadow-soft);
}
.space-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.space-card:hover img{transform:scale(1.04)}
.space-card .tag{
  position:absolute;top:18px;left:18px;background:rgba(255,255,255,0.92);backdrop-filter:blur(4px);
  padding:7px 14px;border-radius:999px;font-size:.82rem;font-weight:700;color:var(--c-blue);
}
.space-1{grid-column:1/8;grid-row:1/3;aspect-ratio:5/4}
.space-2{grid-column:8/13;grid-row:1/2;aspect-ratio:1/1;margin-top:44px}
.space-3{grid-column:8/13;grid-row:2/3;aspect-ratio:4/5}
.space-note{grid-column:1/8;grid-row:2/3;padding:8px 4px 0;align-self:center}
.space-note h3{font-size:1.3rem;margin-bottom:8px}
.space-note p{color:var(--ink-500)}

@media (max-width:860px){
  .space-grid{grid-template-columns:1fr}
  .space-1,.space-2,.space-3,.space-note{grid-column:1/-1;margin-top:0}
  .space-1{aspect-ratio:4/3}
}

/* ==========================================================================
   시공 사례 (before/after)
   ========================================================================== */
.cases-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:20px}
.case-big{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft);position:relative}
.case-big img{width:100%;height:100%;object-fit:cover;min-height:360px}
.case-side{display:flex;flex-direction:column;gap:20px}
.case-side .case-tile{border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-soft);flex:1;position:relative}
.case-side .case-tile img{width:100%;height:100%;object-fit:cover;min-height:170px}
.case-badge{
  position:absolute;top:14px;left:14px;padding:6px 13px;border-radius:999px;font-size:.78rem;font-weight:800;color:#fff;
}
.case-badge.before{background:var(--ink-500)}
.case-badge.after{background:var(--grad-air)}
.case-side .case-tile.before img{transform:scale(1.22);transform-origin:center 35%}
@media (max-width:860px){.cases-grid{grid-template-columns:1fr}}

/* ==========================================================================
   before/after pair (detail pages)
   ========================================================================== */
.ba-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ba-pair figure{margin:0;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-soft);position:relative}
.ba-pair img{width:100%;height:340px;object-fit:cover}
.ba-pair figcaption{position:absolute;top:16px;left:16px;padding:6px 14px;border-radius:999px;font-size:.8rem;font-weight:800;color:#fff}
.ba-pair figure.before figcaption{background:var(--ink-500)}
.ba-pair figure.after figcaption{background:var(--grad-air)}
.ba-pair img.pos-top{object-position:center top}
.ba-pair img.pos-blades{object-position:center 70%}
.ba-pair img.pos-high{object-position:center 10%}
@media (max-width:700px){.ba-pair{grid-template-columns:1fr}}
@media (min-width:701px){.ba-pair img{height:520px}}

.ceiling-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ceiling-split figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft)}
.ceiling-split img{width:100%;height:100%;object-fit:cover;min-height:320px}
@media (max-width:860px){.ceiling-split{grid-template-columns:1fr}}

/* ==========================================================================
   ceiling / reinforcement link block
   ========================================================================== */
.ceiling-block{
  border-radius:var(--radius-lg);background:var(--bg-cool);padding:64px;position:relative;overflow:hidden;
}
.ceiling-block .big-line{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:800;color:var(--ink-900);max-width:640px}
.ceiling-block .link-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;font-weight:800;font-size:1.05rem;color:var(--c-blue);
}
.ceiling-block ul{margin-top:30px;display:flex;flex-direction:column;gap:12px;max-width:560px}
.ceiling-block li{color:var(--ink-500);padding-left:20px;position:relative;font-size:.96rem}
.ceiling-block li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:1px;background:var(--c-blue)}

/* ==========================================================================
   NSEO list — 01 02 03 style, irregular
   ========================================================================== */
.nseo-list{display:flex;flex-direction:column}
.nseo-item{
  display:flex;align-items:baseline;gap:24px;padding:30px 0;border-top:1px solid var(--line);
  transition:padding-left .3s ease;
}
.nseo-item:last-child{border-bottom:1px solid var(--line)}
.nseo-item:hover{padding-left:10px}
.nseo-idx{font-size:.85rem;font-weight:800;color:var(--c-cyan);flex:none;width:34px}
.nseo-item h3{font-weight:800;letter-spacing:-.01em;transition:color .2s}
.nseo-item:hover h3{color:var(--c-blue)}
.nseo-item p{color:var(--ink-300);font-size:.88rem;margin-top:4px}
.nseo-arrow{margin-left:auto;color:var(--ink-300);font-size:1.3rem}
.nseo-item:nth-child(1) h3{font-size:1.5rem}
.nseo-item:nth-child(2){padding-left:8%}
.nseo-item:nth-child(2) h3{font-size:1.15rem}
.nseo-item:nth-child(3) h3{font-size:1.75rem}
.nseo-item:nth-child(4){padding-left:4%}
.nseo-item:nth-child(4) h3{font-size:1.2rem}
.nseo-item:nth-child(5) h3{font-size:1.35rem}
@media (max-width:640px){
  .nseo-item{padding-left:0 !important}
  .nseo-item h3{font-size:1.15rem !important}
}

/* ==========================================================================
   FAQ — accordion (native details/summary)
   ========================================================================== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 4px;cursor:pointer;font-weight:700;color:var(--ink-900);font-size:1.02rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:1.4rem;font-weight:400;color:var(--c-blue);transition:transform .3s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 4px 26px;color:var(--ink-500);max-width:760px}

/* ==========================================================================
   final CTA block
   ========================================================================== */
.cta-final{
  border-radius:var(--radius-lg);background:var(--grad-air);padding:70px 56px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-final h2{color:#fff;font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:800;margin-bottom:14px}
.cta-final p{color:rgba(255,255,255,0.9);margin-bottom:30px;font-size:1.02rem}
.cta-final .btn{background:#fff;color:var(--c-blue);box-shadow:0 20px 50px -18px rgba(0,0,0,0.35)}

/* related services */
.related{border-top:1px solid var(--line);padding-top:44px;margin-top:10px}
.related h3{font-size:1.1rem;margin-bottom:20px;color:var(--ink-700)}
.related-carousel{overflow:hidden}
.related-track{display:flex;gap:12px}
.related-card{
  flex:0 0 calc((100% - 24px)/3);display:block;border:1px solid var(--line);border-radius:12px;
  overflow:hidden;text-decoration:none;color:var(--ink-700);transition:border-color .2s;
}
.related-card:hover{border-color:var(--c-blue)}
.related-card img{width:100%;height:auto;aspect-ratio:2/3;object-fit:cover;display:block}
.related-card span{display:block;padding:10px 12px;font-size:.9rem;font-weight:600}
@media (max-width:720px){.related-card{flex:0 0 calc((100% - 12px)/2)}}

/* generic body copy block */
.prose{max-width:760px}
.prose p{margin-bottom:20px;color:var(--ink-700);font-size:1.02rem}
.prose h2{font-size:1.6rem;margin:44px 0 16px}
.prose h3{font-size:1.2rem;margin:32px 0 12px}
.prose ul{margin:0 0 20px;padding-left:20px}
.prose li{margin-bottom:8px;color:var(--ink-500);font-size:1.02rem}

/* page header (detail pages) */
.page-hero{padding:56px 0 20px}
.page-hero .kicker{font-size:.8rem;letter-spacing:.16em;font-weight:700;color:var(--c-sky);text-transform:uppercase;margin-bottom:14px}
.page-hero h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;letter-spacing:-.02em}
.page-hero .lead{margin-top:18px;color:var(--ink-500);font-size:1.08rem;max-width:600px}

/* breadcrumb */
.crumb{font-size:.85rem;color:var(--ink-300);margin-bottom:18px}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--c-blue)}

/* ==========================================================================
   sitemap page
   ========================================================================== */
.sitemap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.sitemap-card{border:1px solid var(--line);border-radius:var(--radius-md);padding:26px;transition:border-color .2s}
.sitemap-card:hover{border-color:var(--c-blue)}
.sitemap-card h3{margin-bottom:8px;font-size:1.05rem}
.sitemap-card h3 a:hover{color:var(--c-blue)}
.sitemap-card p{color:var(--ink-500);font-size:.9rem}

/* ==========================================================================
   footer
   ========================================================================== */
.site-footer{background:var(--bg-cool);border-top:1px solid var(--line);padding:60px 0 110px}
.footer-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.footer-biz p{color:var(--ink-500);font-size:.92rem;margin-bottom:6px}
.footer-biz .biz-name{font-weight:800;color:var(--ink-900);font-size:1.05rem;margin-bottom:12px}
.footer-links{display:flex;gap:10px;align-items:flex-start}
.footer-links a{
  padding:10px 18px;border-radius:999px;border:1px solid var(--line);font-weight:600;font-size:.9rem;
}
.footer-links a:hover{border-color:var(--c-blue);color:var(--c-blue)}
.footer-copy{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);color:var(--ink-300);font-size:.82rem}

/* ==========================================================================
   fixed call controls
   ========================================================================== */
.call-fab{
  position:fixed;right:26px;bottom:26px;z-index:60;
  width:60px;height:60px;border-radius:50%;background:var(--grad-air);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 16px 36px -10px rgba(44,111,224,0.55);
}
.call-fab svg{width:26px;height:26px}
.call-bar{display:none}

@media (max-width:720px){
  .call-fab{display:none}
  .call-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:var(--grad-air);color:#fff;align-items:center;justify-content:center;gap:10px;
    padding:16px;font-weight:800;font-size:1rem;box-shadow:0 -10px 30px -12px rgba(44,111,224,0.5);
  }
  section{padding:64px 0}
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .hero-object{order:-1}
  .hero-photo{width:60%;margin:0 auto}
  .cases-grid{grid-template-columns:1fr}
  .ceiling-block{padding:36px 24px}
  body{padding-bottom:64px}
}

@media (max-width:520px){
  .nav a:not(.cta-btn):not(.mobile-hide){display:none}
}