/* ===== 낙찰건물옥상방수공사 — 디자인 시스템 ===== */
:root{
  --primary:#2563eb; --primary-dark:#1447b3; --primary-light:#60a5fa;
  --accent:#0891b2;
  --gray-50:#f8fafc; --gray-100:#f1f5f9; --gray-200:#e2e8f0; --gray-400:#94a3b8;
  --gray-600:#475569; --gray-700:#334155; --gray-900:#0f172a;
  --radius:16px; --shadow:0 10px 30px rgba(15,23,42,.08); --shadow-lg:0 20px 50px rgba(15,23,42,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans KR',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--gray-900);line-height:1.6;background:#fff;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.section-title{font-size:clamp(1.6rem,3.5vw,2.3rem);font-weight:900;text-align:center;margin-bottom:12px}
.section-desc{text-align:center;color:var(--gray-600);margin-bottom:44px;font-size:1.02rem}
.badge{display:inline-flex;align-items:center;gap:6px;background:rgba(37,99,235,.1);color:var(--primary-dark);font-weight:700;font-size:.85rem;padding:8px 16px;border-radius:99px;margin-bottom:16px}
section{padding:80px 0}
@media(max-width:768px){section{padding:52px 0}}

/* ---- 버튼 ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 30px;border-radius:12px;font-weight:700;font-size:1rem;border:none;cursor:pointer;transition:.25s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 8px 24px rgba(37,99,235,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(37,99,235,.45)}
.btn-outline{background:#fff;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-white{background:#fff;color:var(--primary-dark)}
.btn-white:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.btn-lg{padding:18px 40px;font-size:1.1rem}

/* ---- Header ---- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.7);backdrop-filter:blur(14px);transition:.3s;border-bottom:1px solid rgba(15,23,42,.06)}
.site-header.scrolled{background:rgba(255,255,255,.95);box-shadow:0 2px 20px rgba(15,23,42,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.05rem;color:var(--gray-900);white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:32px}
.nav-menu a{font-weight:600;font-size:.95rem;color:var(--gray-700);transition:.2s}
.nav-menu a:hover{color:var(--primary)}
.header-cta{display:flex;align-items:center;gap:14px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:1100}
.hamburger span{width:24px;height:2.5px;background:var(--gray-900);border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.mobile-menu{position:fixed;inset:0 0 0 30%;background:#fff;z-index:1050;transform:translateX(100%);transition:.35s;padding:100px 28px 28px;overflow-y:auto;box-shadow:-10px 0 40px rgba(0,0,0,.15)}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{display:block;padding:16px 0;font-weight:700;font-size:1.1rem;border-bottom:1px solid var(--gray-100)}
.menu-overlay{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:1040;opacity:0;pointer-events:none;transition:.3s}
.menu-overlay.open{opacity:1;pointer-events:auto}
@media(max-width:768px){.nav-menu{display:none}.hamburger{display:flex}.header-cta .btn-outline{display:none}}

/* ---- Hero ---- */
.hero{position:relative;min-height:112vh;display:flex;align-items:center;padding-top:76px;overflow:hidden;background:var(--gray-900)}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-slide::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,23,42,0),rgba(15,23,42,0) 70%,rgba(15,23,42,0))}
.hero-step-badge{position:absolute;top:96px;left:50%;transform:translateX(-50%);z-index:2;background:rgba(255,255,255,.15);backdrop-filter:blur(6px);color:#fff;font-weight:700;font-size:.85rem;letter-spacing:.03em;padding:8px 18px;border-radius:99px;white-space:nowrap;border:1px solid rgba(255,255,255,.25)}
@media(max-width:640px){.hero-step-badge{top:84px;font-size:.75rem;padding:6px 14px}}
.hero-content{position:relative;z-index:2;color:#fff;max-width:720px;padding:60px 20px}
.hero-content .badge{background:rgba(255,255,255,.15);color:#fff;backdrop-filter:blur(6px)}
.hero-content h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:900;line-height:1.25;margin-bottom:20px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero-content p{font-size:1.15rem;color:rgba(255,255,255,.88);margin-bottom:34px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-controls{position:absolute;bottom:34px;left:0;right:0;z-index:3;display:flex;align-items:center;justify-content:center;gap:22px}
.hero-arrow{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;backdrop-filter:blur(6px);transition:.2s}
.hero-arrow:hover{background:rgba(255,255,255,.3)}
.hero-dots{display:flex;gap:9px}
.hero-dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.4);border:none;cursor:pointer;transition:.25s}
.hero-dot.active{background:#fff;width:26px;border-radius:5px}

/* ---- 페이지 Hero (파생/시공사례) ---- */
.page-hero{position:relative;min-height:56vh;display:flex;align-items:center;padding-top:76px;background:var(--gray-900)}
.page-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,23,42,0),rgba(15,23,42,0))}
.page-hero-content{position:relative;z-index:2;color:#fff;padding:70px 20px 50px}
.page-hero-content h1{font-size:clamp(1.9rem,4.5vw,2.9rem);font-weight:900;margin-bottom:16px;text-shadow:0 2px 16px rgba(0,0,0,.3)}
.page-hero-content p{font-size:1.05rem;color:rgba(255,255,255,.85);max-width:600px;margin-bottom:28px}

/* ---- Breadcrumb ---- */
.breadcrumb{background:var(--gray-50);padding:14px 0;font-size:.86rem;color:var(--gray-600);border-bottom:1px solid var(--gray-100)}
.breadcrumb a{color:var(--gray-600)}
.breadcrumb a:hover{color:var(--primary)}
.bc-sep{margin:0 8px;color:var(--gray-400)}

/* ---- 카드 그리드 (시공사례) ---- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
@media(max-width:768px){.case-grid{grid-template-columns:1fr}}
.case-card{border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:.3s;border:1px solid var(--gray-100)}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.case-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.case-card:hover .thumb img{transform:scale(1.06)}
.case-card .tag{position:absolute;top:14px;left:14px;background:var(--primary);color:#fff;font-size:.78rem;font-weight:700;padding:5px 12px;border-radius:99px;z-index:2}
.case-card .body{padding:22px}
.case-card .body h3{font-size:1.15rem;font-weight:800;margin-bottom:8px}
.case-card .body p{color:var(--gray-600);font-size:.92rem}
.case-card .more{margin-top:12px;font-weight:700;color:var(--primary);font-size:.9rem}

/* ---- 서비스 소개 ---- */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:900px){.service-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.service-grid{grid-template-columns:1fr}}
.service-card{background:var(--gray-50);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:.3s;border:1px solid transparent}
.service-card:hover{background:#fff;border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-4px)}
.service-icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:1.7rem;margin:0 auto 18px;color:#fff}
.service-card h3{font-size:1.05rem;font-weight:800;margin-bottom:8px}
.service-card p{color:var(--gray-600);font-size:.9rem}

/* ---- 신뢰/실적 ---- */
.trust-section{background:var(--gray-900);color:#fff}
.trust-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:50px}
@media(max-width:700px){.trust-stats{grid-template-columns:repeat(2,1fr)}}
.stat{text-align:center}
.stat .num{font-size:clamp(2rem,4vw,2.6rem);font-weight:900;color:var(--primary-light)}
.stat .label{color:rgba(255,255,255,.7);font-size:.92rem;margin-top:6px}
.badge-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.trust-badge{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);padding:12px 20px;border-radius:12px;font-size:.9rem;font-weight:600;display:flex;align-items:center;gap:8px}

/* ---- 프로세스 ---- */
.process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:900px){.process-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.process-list{grid-template-columns:1fr}}
.process-step{position:relative;background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius);padding:28px 22px;box-shadow:var(--shadow)}
.process-step .step-num{width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:16px}
.process-step h3{font-weight:800;margin-bottom:8px;font-size:1.02rem}
.process-step p{color:var(--gray-600);font-size:.88rem}

/* ---- 시공방법 단계별 스텝 ---- */
.method-steps{display:flex;flex-direction:column;gap:24px;max-width:820px;margin:0 auto}
.method-step{display:grid;grid-template-columns:200px 1fr;gap:26px;align-items:center;background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.method-step-photo{width:100%;aspect-ratio:1/1;border-radius:12px;overflow:hidden}
.method-step-photo img{width:100%;height:100%;object-fit:cover;display:block}
.method-step .step-tag{display:inline-block;background:rgba(37,99,235,.1);color:var(--primary-dark);font-weight:800;font-size:.78rem;padding:5px 12px;border-radius:99px;margin-bottom:10px}
.method-step h3{font-size:1.1rem;font-weight:800;margin-bottom:8px}
.method-step p{color:var(--gray-600);font-size:.92rem}
@media(max-width:640px){.method-step{grid-template-columns:1fr}}

/* ---- 카드형 2열 그리드 (상담 카드 등 공용) ---- */
.ba-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:640px){.ba-grid{grid-template-columns:1fr}}
.ba-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--gray-100);background:#fff}

/* ---- 시공 사진 갤러리 ---- */
.photo-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;max-width:900px;margin:0 auto}
.photo-grid .photo{position:relative;width:calc(33.333% - 11px);aspect-ratio:3/4;border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
@media(max-width:640px){.photo-grid .photo{width:calc(50% - 8px)}}
.photo-grid .photo img{width:100%;height:100%;object-fit:cover;transition:.4s}
.photo-grid .photo:hover img{transform:scale(1.06)}

/* ---- 본문 SEO 텍스트 ---- */
.text-block{max-width:820px;margin:0 auto}
.text-block h2{font-size:1.5rem;font-weight:800;margin:36px 0 14px}
.text-block h2:first-child{margin-top:0}
.text-block p{color:var(--gray-700);margin-bottom:16px;font-size:1.02rem}
.text-block strong{color:var(--primary-dark)}

/* ---- 관련 페이지 ---- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:760px){.related-grid{grid-template-columns:1fr}}
.related-card{border:1px solid var(--gray-200);border-radius:14px;padding:22px;transition:.25s;display:block}
.related-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-3px)}
.related-card h3{font-size:1rem;font-weight:800;margin-bottom:6px}
.related-card p{color:var(--gray-600);font-size:.86rem}
.related-card .arrow{color:var(--primary);font-weight:700;font-size:.85rem;margin-top:10px}

/* ---- FAQ ---- */
.faq-section{background:var(--gray-50)}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--gray-200);border-radius:12px;padding:18px 22px}
.faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.4rem;color:var(--primary);transition:.25s;flex-shrink:0;margin-left:12px}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin-top:14px;color:var(--gray-600);font-size:.94rem;line-height:1.7}

/* ---- CTA 섹션 ---- */
.cta-section{position:relative;background:linear-gradient(135deg,var(--primary-dark),var(--primary) 60%,var(--accent));color:#fff;overflow:hidden;text-align:center}
.cta-section::before{content:'';position:absolute;top:-30%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%)}
.cta-section::after{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%)}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{font-size:clamp(1.7rem,4vw,2.5rem);font-weight:900;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.85);margin-bottom:32px;font-size:1.05rem}
.cta-badges{display:flex;justify-content:center;gap:26px;margin-top:36px;flex-wrap:wrap}
.cta-badge{display:flex;align-items:center;gap:8px;font-weight:600;font-size:.92rem;color:rgba(255,255,255,.9)}

/* ---- Footer ---- */
.site-footer{background:var(--gray-900);color:rgba(255,255,255,.7);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:40px}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-col h4{color:#fff;font-weight:800;margin-bottom:16px;font-size:1rem}
.footer-col p, .footer-col li{font-size:.88rem;line-height:1.9}
.footer-col ul{list-style:none}
.footer-col a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand img{height:34px}
.footer-brand span{color:#fff;font-weight:800}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;font-size:.8rem;color:rgba(255,255,255,.45);text-align:center}

/* ---- Floating 버튼 ---- */
.floating-wrap{position:fixed;right:22px;bottom:26px;z-index:900;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.fab{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);cursor:pointer;border:none;font-size:1.5rem;position:relative}
.fab-consult{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.fab-consult::before{content:'';position:absolute;inset:0;border-radius:50%;border:2px solid var(--primary-light);animation:pulse-ring 3s infinite}
.fab-top{background:#fff;color:var(--gray-700);width:46px;height:46px;font-size:1.2rem;border:1px solid var(--gray-200);opacity:0;pointer-events:none;transform:translateY(10px);transition:.3s}
.fab-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
@keyframes pulse-ring{0%{transform:scale(1);opacity:.7}70%{transform:scale(1.6);opacity:0}100%{opacity:0}}

/* ---- 404 ---- */
.error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:140px 20px 80px}
.error-page .code{font-size:clamp(4rem,12vw,7rem);font-weight:900;color:var(--primary);line-height:1}
.error-page h1{font-size:1.6rem;font-weight:800;margin:16px 0 12px}
.error-page p{color:var(--gray-600);margin-bottom:32px}
.error-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---- 사이트맵 페이지 ---- */
.sitemap-hero{background:linear-gradient(135deg,var(--primary-dark),var(--accent));color:#fff;padding:150px 0 60px;text-align:center}
.sitemap-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:900;margin-bottom:10px}
.sitemap-hero p{color:rgba(255,255,255,.85)}
.sitemap-count{display:inline-block;margin-top:18px;background:rgba(255,255,255,.15);padding:8px 18px;border-radius:99px;font-weight:700;font-size:.9rem}
.sitemap-tools{padding:34px 0;border-bottom:1px solid var(--gray-100)}
.sitemap-search{position:relative;max-width:480px;margin:0 auto 20px}
.sitemap-search input{width:100%;padding:14px 18px 14px 44px;border-radius:12px;border:1px solid var(--gray-200);font-size:.95rem}
.sitemap-search .icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--gray-400)}
.sitemap-filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.filter-btn{padding:9px 18px;border-radius:99px;border:1px solid var(--gray-200);background:#fff;font-weight:600;font-size:.86rem;cursor:pointer;transition:.2s}
.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.sitemap-count-line{text-align:center;color:var(--gray-600);font-size:.88rem;margin:18px 0}
.sitemap-cat{margin-bottom:44px}
.sitemap-cat h2{font-size:1.15rem;font-weight:800;margin-bottom:18px}
.sitemap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.sitemap-card{border:1px solid var(--gray-200);border-radius:14px;padding:20px;transition:.25s;display:block}
.sitemap-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-4px)}
.sitemap-card .ic{font-size:1.6rem;margin-bottom:10px}
.sitemap-card h3{font-weight:800;font-size:.96rem;margin-bottom:5px}
.sitemap-card p{color:var(--gray-600);font-size:.82rem}
.sitemap-empty{text-align:center;padding:40px;color:var(--gray-600)}
.sitemap-banner{background:var(--gray-50);border-radius:var(--radius);padding:44px;text-align:center;margin-top:20px}
.sitemap-banner h3{font-size:1.3rem;font-weight:800;margin-bottom:10px}
.sitemap-banner p{color:var(--gray-600);margin-bottom:22px}