:root{--navy:#10243b;--ink:#1b2938;--muted:#637184;--line:#dfe6ed;--sky:#8abddf}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:'Malgun Gothic','Apple SD Gothic Neo',Arial,sans-serif;line-height:1.8}a{text-decoration:none;color:inherit}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid #e7ebef}.nav{display:flex;justify-content:space-between;align-items:center;min-height:84px}.brand{font-size:26px;line-height:1.2;font-weight:800;letter-spacing:-1px}.brand small{display:block;font-size:10px;letter-spacing:2.5px;color:#78889a;margin-top:8px}.links{display:flex;gap:24px;font-size:14px;font-weight:700}.links a.active,.links a:hover{color:#1976a9}.menu{display:none;border:1px solid var(--line);border-radius:4px;background:#fff;padding:7px 12px;font-size:20px}.hero{min-height:620px;background:linear-gradient(90deg,#091a2de8,#112c45c4 55%,#10243b61),url('assets/101-building-frontline-poster.jpg') center/cover;color:#fff;display:flex;align-items:center}.hero h1{font-size:clamp(36px,5vw,66px);line-height:1.32;letter-spacing:-2.6px;margin:24px 0}.hero p{font-size:18px;color:#dbe5ef;max-width:690px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:3px;color:#a7d4f4}.btn{display:inline-block;background:#fff;color:#10243b;padding:13px 25px;font-weight:800;margin:22px 10px 0 0;border-radius:3px}.btn.outline{border:1px solid #dce8f4;background:transparent;color:#fff}.banner{background:linear-gradient(100deg,#0c2037,#1c4666);color:#fff;padding:95px 0}.banner h1{font-size:clamp(34px,4vw,52px);letter-spacing:-2px;line-height:1.3;margin:15px 0}.banner p{color:#d7e4ed}.section{padding:90px 0}.section.alt{background:#f4f7fa}.kicker{font-size:12px;font-weight:800;letter-spacing:2px;color:#27769d}.section h2{font-size:clamp(26px,3vw,38px);letter-spacing:-1.4px;line-height:1.4;margin:12px 0 22px}.lead{color:var(--muted);max-width:800px;font-size:16px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:35px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{border:1px solid var(--line);background:white;padding:30px;min-height:215px}.card h3{font-size:20px;margin:6px 0 10px}.card p{color:var(--muted);margin:0;font-size:14px}.num{color:#267fae;font-weight:800;font-size:13px;letter-spacing:2px}.dark{background:#10243b;color:#fff}.dark .lead,.dark p{color:#d1dce7}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:35px}.step{padding:25px 15px;border:1px solid #cad9e4;background:#fff;color:var(--ink)}.step strong{display:block;font-size:16px}.step span{font-size:12px;color:var(--muted)}.placeholder{background:repeating-linear-gradient(135deg,#e7eef4,#e7eef4 14px,#dae5ed 14px,#dae5ed 28px);min-height:220px;display:flex;align-items:center;justify-content:center;color:#597188;text-align:center;padding:20px;font-weight:700}.note{border-left:3px solid #79a8ca;background:#eef4f8;padding:18px 22px;color:#4d6174;font-size:14px;margin-top:24px}.split{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}.timeline{border-left:2px solid #b6cadb;padding-left:25px}.timeline p{padding:15px 0;border-bottom:1px solid var(--line)}.field{display:grid;gap:6px;margin-bottom:17px}.field input,.field textarea{padding:13px;border:1px solid #cad5df;font:inherit;width:100%;border-radius:3px}.field textarea{min-height:130px}.send{background:#10243b;color:#fff;padding:14px 26px;border:0;font:inherit;font-weight:700;cursor:pointer}.footer{background:#0b1b2c;color:#c4d2de;padding:45px 0;font-size:13px}.footer strong{color:#fff;font-size:19px}.footer .footlinks{display:flex;gap:15px;flex-wrap:wrap;margin-top:15px}.small{font-size:13px;color:var(--muted)}@media(max-width:850px){.menu{display:block}.links{display:none;position:absolute;top:84px;left:0;right:0;background:white;padding:20px;box-shadow:0 8px 20px #0002;flex-direction:column;gap:13px}.links.open{display:flex}.hero{min-height:540px}.section{padding:60px 0}.grid,.grid.two,.split{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.nav{min-height:76px}.links{top:76px}}.contact-card{display:flex;flex-direction:column;min-height:280px}.contact-card p{flex:1}.contact-action{display:flex;flex-direction:column;align-items:flex-start;gap:10px;margin-top:26px}.contact-action .send{font-size:14px;text-decoration:none}.send:disabled{background:#aab7c4;cursor:not-allowed}.booking-layout{align-items:start}.booking-layout form{max-width:620px;width:100%}.booking-dates{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field select{padding:13px;border:1px solid #cad5df;font:inherit;width:100%;border-radius:3px;background:white}.consent{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);margin:10px 0 22px}.consent input{margin-top:7px}.booking-aside{padding:28px;background:white;border:1px solid var(--line)}@media(max-width:600px){.booking-dates{grid-template-columns:1fr}}

/* v6 drone landing */
.hero-video{position:relative;isolation:isolate;min-height:690px;background:#0b1a2c;overflow:hidden}.hero-film,.hero-fallback,.hero-shade{position:absolute;inset:0;width:100%;height:100%;z-index:-1}.hero-film{object-fit:cover}.hero-fallback{background:linear-gradient(90deg,#07182d33,#122b4855),url('assets/101-building-frontline-poster.jpg') center/cover}.hero-shade{background:linear-gradient(90deg,#071527ed 0%,#0b203ad9 52%,#102b4a80 100%)}.hero-content{padding:90px 0;position:relative}.hero-video h1{font-size:clamp(35px,4.7vw,65px);max-width:1000px}.hero-video p{line-height:1.95}.hero-buttons{display:flex;flex-wrap:wrap;gap:10px}.video-note{font-size:12px;color:#bbd0e1;margin-top:32px}.hero-bottom{position:absolute;bottom:22px;right:max(24px,calc((100vw - 1160px)/2));color:#c6d5e4;letter-spacing:2px;font-size:10px}.hero-bottom span{font-size:20px;margin-left:10px}.showcase{background:#f6f8fb}.showcase-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px}.showcase-card{background:#fff;border:1px solid #dce5ee;padding-bottom:24px}.showcase-card h3,.showcase-card p{margin-left:25px;margin-right:25px}.showcase-card h3{margin-top:22px;margin-bottom:6px;font-size:22px}.showcase-card p{color:#607185;font-size:14px;margin-top:0}.showcase-visual{height:300px;background:linear-gradient(120deg,#0c1b30,#233b55);position:relative;overflow:hidden}.scene-index{position:absolute;top:20px;left:22px;color:#b5d0e8;font-size:12px;letter-spacing:2px;z-index:3}.visual-tag{position:absolute;bottom:20px;left:22px;color:#fff;background:#0c1e32bb;padding:8px 12px;font-size:12px;z-index:3}.building-shape{position:absolute;left:28%;top:10%;width:46%;height:110%;background:linear-gradient(90deg,#7c8b9a,#c1cad2 30%,#7e90a0 100%);display:grid;grid-template-columns:repeat(5,1fr);gap:9px;padding:35px 12px 8px;box-shadow:20px 0 45px #0005}.building-shape i{background:repeating-linear-gradient(180deg,#263e53 0 14px,#a8b7c4 14px 26px);opacity:.8}.drone-scene .scan-line{position:absolute;left:0;right:0;top:46%;height:2px;background:#5ebde4;box-shadow:0 0 28px #5ebde4;opacity:.65}.defect-scene .building-shape{left:21%;width:61%}.defect-dot{position:absolute;border:2px solid #fff;background:#ed6c58;border-radius:50%;width:14px;height:14px;z-index:2;box-shadow:0 0 0 5px #ed6c5844}.dot1{top:31%;left:43%}.dot2{top:57%;left:68%}.dot3{top:71%;left:35%}.dot4{top:42%;left:60%}.showcase-cta{margin-top:30px;background:#10243b;color:#fff;padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:20px}.showcase-cta p{color:#cfdae4;margin:6px 0 0;font-size:14px}.showcase-cta .btn{margin:0;white-space:nowrap}@media(max-width:850px){.hero-video{min-height:620px}.showcase-grid{grid-template-columns:1fr}.showcase-cta{flex-direction:column;align-items:flex-start}.hero-content{padding:70px 0}}

.sample-video,.sample-image{display:block;width:100%;height:100%;object-fit:cover}.sample-image{object-position:center top}.hero-film{filter:saturate(.9)}@media(prefers-reduced-motion:reduce){.hero-film,.sample-video{display:none}}

/* v8 media adjustments */
.showcase-visual{height:340px}.showcase-visual video{object-fit:contain;background:#071827}.hero-film{object-fit:cover;object-position:center 43%}@media(max-width:650px){.showcase-visual{height:290px}}

/* v9 image-led editorial layout */
.photo-section{background:#f6f8fb}.photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:32px}
.photo-tile{background:#fff;border:1px solid #dce5ee;padding-bottom:22px;overflow:hidden}
.photo-tile h3{font-size:19px;margin:16px 20px 5px}.photo-tile p{font-size:14px;color:#637184;margin:0 20px}
.editorial-figure{margin:0;position:relative;background:#e7edf2;overflow:hidden}
.editorial-img{display:block;width:100%;height:240px;object-fit:cover;transition:transform .3s ease}
.photo-tile:hover .editorial-img{transform:scale(1.025)}
.editorial-figure figcaption{position:absolute;left:9px;bottom:9px;background:#071b2cdb;color:white;font-size:10px;line-height:1.4;padding:6px 9px;max-width:calc(100% - 18px)}
.split .editorial-img,.grid.two .editorial-img{height:260px}
.grid .card .editorial-img{height:205px}
.grid .card .editorial-figure{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #3182c6;outline-offset:3px}
@media(max-width:850px){.photo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.photo-grid{grid-template-columns:1fr}.editorial-img{height:220px}}
@media(prefers-reduced-motion:reduce){.editorial-img{transition:none}}

.backtop{text-align:right;padding:16px 0}.backtop a{color:#426a91;text-decoration:underline}
.privacy-link{font-size:12px;margin-top:10px}.privacy-link a{color:inherit;text-decoration:underline}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}}

.technology-feature{margin-top:28px}.technology-feature .showcase-visual{aspect-ratio:16/9}.technology-feature video{width:100%;height:100%;object-fit:contain;background:#0b1727}

/* v14 editorial consolidation */
.v14-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:28px}
.v14-card{display:block;background:#fff;border:1px solid #d9e1eb;color:#15283e;text-decoration:none;overflow:hidden}
.v14-card img{display:block;width:100%;height:210px;object-fit:cover}
.v14-card>div{padding:20px}.v14-card h3{margin:0 0 8px;font-size:20px}
.v14-card p{margin:0 0 12px;color:#647489;font-size:14px;line-height:1.7}
.v14-card span,.v14-card small{font-size:13px;color:#275c8d}
.v14-feature{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:center;margin:32px 0;padding:22px;border:1px solid #d9e1eb;background:#fff}
.v14-feature img,.v14-feature video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:#0d192a}
.v14-feature video{object-fit:contain}.v14-feature h3{font-size:23px;margin:0 0 12px}
.v14-feature p{color:#65748a;line-height:1.8}.v14-feature a{color:#275c8d}
.v14-muted{font-size:12px!important}
@media(max-width:900px){.v14-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.v14-feature{grid-template-columns:1fr}}
@media(max-width:600px){.v14-grid{grid-template-columns:1fr}.v14-card img{height:220px}.v14-feature{padding:12px}}

/* v15 responsive media audit */
img,video{max-width:100%}
.v14-card img{width:100%;height:auto;aspect-ratio:3/2;object-fit:contain;object-position:center;background:#e9eef3}
.v14-feature img{width:100%;height:auto;aspect-ratio:1000/690;object-fit:contain;object-position:center;background:#e9eef3}
.v14-feature video{width:100%;height:auto;aspect-ratio:1/1;object-fit:contain;object-position:center;background:#0d192a}
.editorial-img,.split .editorial-img,.grid.two .editorial-img,.grid .card .editorial-img{width:100%;height:auto;aspect-ratio:1000/690;object-fit:contain;object-position:center}
.example-notice{margin:28px 0 4px;padding:18px 20px;border:1px solid #b9d3e5;border-left:4px solid #27769d;background:#eef6fb;color:#41566b;font-size:14px;line-height:1.75}
.example-notice strong{color:#173b59}
.case-grid .v14-card,.resource-grid .v14-card{display:flex;flex-direction:column}
.case-grid .v14-card>div,.resource-grid .v14-card>div{display:flex;flex:1;flex-direction:column}
.case-grid .v14-card small,.resource-grid .v14-card small{margin-top:auto}
@media(max-width:900px){.v14-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.wrap{width:min(100% - 28px,1160px)}.v14-grid{grid-template-columns:1fr}.v14-card img{height:auto}.banner{padding:68px 0}.hero h1{letter-spacing:-1.6px}}

/* v16 real inspection video and company contact */
.v14-feature video,.service-video video{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;object-position:center;background:#0d192a}
.service-video{margin:0;background:#f4f7fa;border:1px solid var(--line);overflow:hidden}
.media-caption{margin:0;padding:10px 14px;color:#5d6f82;font-size:12px;line-height:1.6;background:#fff}
.contact-address{margin-top:28px;padding:22px 26px;border:1px solid var(--line);background:#f4f7fa}
.contact-address p{margin:6px 0 0;color:var(--muted)}
.footer a[href^="tel:"],.footer a[href^="mailto:"]{text-decoration:underline;text-underline-offset:3px}
.hero-fallback{background:linear-gradient(90deg,#07182d33,#122b4855),url('assets/101-building-frontline-poster.jpg') center/cover}.hero-fallback-previous{background-image:linear-gradient(90deg,#07182d33,#122b4855),url('assets/drone-ascent-poster.jpg')}
@media(max-width:850px){.service-media-split{grid-template-columns:1fr}.service-video{order:1}}

/* v17 primary logo */
.brand-image{display:flex;align-items:center;line-height:0;flex:0 0 auto}
.brand-logo{display:block;width:250px;height:62px;object-fit:contain;object-position:left center}
@media(max-width:850px){.brand-logo{width:205px;height:52px}}
@media(max-width:420px){.brand-logo{width:178px;height:48px}}
@media(max-width:850px){
  html,body{max-width:100%;overflow-x:hidden}
  .nav{width:min(100% - 28px,1160px)}
  .brand-image{max-width:calc(100% - 62px);min-width:0}
  .menu{display:block!important;position:relative;z-index:30;flex:0 0 auto;margin-left:auto;color:var(--navy)}
  .hero-content{min-width:0}
  .hero-video .eyebrow,.hero-video h1,.hero-video p{overflow-wrap:anywhere;word-break:keep-all}
  .hero-video h1{font-size:clamp(32px,9vw,42px);letter-spacing:-1.7px}
}

/* v18 business-card logo */
.nav{min-height:108px}
.brand-logo{width:190px;height:96px;object-fit:contain;object-position:left center}
@media(max-width:850px){
  .nav{min-height:90px}
  .brand-logo{width:158px;height:82px}
  .links{top:90px}
}
@media(max-width:420px){.brand-logo{width:142px;height:74px}}

/* v21 consultation guide */
.contact-guide-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:start;margin-top:38px}
.guide-panel{background:#fff;border:1px solid var(--line);padding:32px}
.guide-panel h3{font-size:22px;margin:0 0 22px}
.preparation-list,.consultation-process{list-style:none;margin:0;padding:0}
.preparation-list li{position:relative;padding:15px 0 15px 32px;border-bottom:1px solid #e5ebf0}
.preparation-list li:last-child{border-bottom:0}
.preparation-list li::before{content:'✓';position:absolute;left:0;top:16px;width:21px;height:21px;border-radius:50%;background:#e8f2f8;color:#1677a8;font-size:13px;font-weight:800;line-height:21px;text-align:center}
.preparation-list strong,.preparation-list span{display:block}
.preparation-list strong{font-size:15px}
.preparation-list span{color:var(--muted);font-size:13px;margin-top:2px}
.consultation-process li{display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start;padding:16px 0;border-bottom:1px solid #e5ebf0}
.consultation-process li:last-child{border-bottom:0}
.consultation-process>li>span{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:#10243b;color:#fff;font-size:12px;font-weight:800;letter-spacing:1px}
.consultation-process strong{display:block;font-size:15px}
.consultation-process p{margin:2px 0 0;color:var(--muted);font-size:13px}
.guide-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.guide-actions .send{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.guide-actions .secondary{background:#fff;color:#10243b;border:1px solid #10243b}
.guide-note{margin:13px 0 0}
@media(max-width:850px){.contact-guide-grid{grid-template-columns:1fr}.guide-panel{padding:26px}}
@media(max-width:520px){.guide-actions{display:grid}.guide-actions .send{width:100%}}
.privacy-banner{padding:76px 0}.policy-date{display:inline-block;margin-top:16px;padding:6px 12px;border:1px solid #ffffff44;border-radius:3px;color:#e8f1f7;font-size:13px}.privacy-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px;align-items:start}.privacy-toc{position:sticky;top:112px;background:#fff;border:1px solid var(--line);padding:24px}.privacy-toc strong{display:block;margin-bottom:12px;font-size:17px}.privacy-toc a{display:block;padding:7px 0;color:#526477;font-size:13px;border-bottom:1px solid #edf1f4}.privacy-toc a:last-child{border-bottom:0}.privacy-toc a:hover{color:#1976a9}.privacy-content{display:grid;gap:20px}.privacy-card{background:#fff;border:1px solid var(--line);padding:32px;scroll-margin-top:110px}.privacy-card h2{margin:0 0 16px;font-size:24px;line-height:1.45;letter-spacing:-.7px}.privacy-card p{margin:10px 0;color:#4e5f70}.privacy-card ul{margin:12px 0 0;padding-left:22px;color:#4e5f70}.privacy-card li{margin:7px 0}.privacy-table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--line)}.privacy-table{width:100%;min-width:820px;border-collapse:collapse;font-size:13px;line-height:1.65}.privacy-table th,.privacy-table td{padding:15px 14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);vertical-align:top;text-align:left}.privacy-table th{background:#edf4f8;color:#173149;font-weight:700}.privacy-table tr:last-child th,.privacy-table tr:last-child td{border-bottom:0}.privacy-table th:last-child,.privacy-table td:last-child{border-right:0}.privacy-table.compact{min-width:560px}.privacy-table.overseas-table{min-width:650px}.privacy-table.overseas-table th{width:165px}.privacy-note{padding:15px 18px;background:#f3f7fa;border-left:3px solid #6d9fc0}.privacy-contact-card{background:#10243b;color:#fff;border-color:#10243b}.privacy-contact-card h2,.privacy-contact-card p,.privacy-contact-card a{color:#fff}.privacy-contact-list{display:grid;grid-template-columns:1fr 1fr;margin:20px 0 0}.privacy-contact-list div{display:grid;grid-template-columns:90px 1fr;gap:10px;padding:12px 0;border-bottom:1px solid #ffffff22}.privacy-contact-list dt{font-weight:700;color:#a9cde4}.privacy-contact-list dd{margin:0}.privacy-contact-list a{text-decoration:underline;text-underline-offset:3px}.privacy-links a{color:#176d99;text-decoration:underline;text-underline-offset:3px}
@media(max-width:850px){.privacy-layout{grid-template-columns:1fr}.privacy-toc{position:static;display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.privacy-toc strong{grid-column:1/-1}.privacy-card{padding:24px}.privacy-table{min-width:720px}.privacy-contact-list{grid-template-columns:1fr}}
@media(max-width:520px){.privacy-toc{grid-template-columns:1fr}.privacy-card{padding:20px}.privacy-card h2{font-size:21px}.privacy-banner{padding:60px 0}.privacy-contact-list div{grid-template-columns:76px 1fr}.privacy-table.overseas-table{min-width:580px}}
.privacy-banner{text-align:center}
.privacy-banner .wrap{width:min(1040px,calc(100% - 56px))}
.privacy-banner p{max-width:760px;margin-left:auto;margin-right:auto}