/* Sejungtech — styles replicated from the design mockups */
:root{
  --navy:#0E2A47; --navy2:#17324F; --blue:#0B63C5; --sky:#4FA3F7;
  --ink:#14181C; --muted:#5A6774; --mute2:#8A949E; --soft:#A9C4E0; --soft2:#8FB6E4;
  --line:#DCE2E8; --line2:#C5CDD5; --bg2:#F4F6F8; --white:#FFFFFF; --navyline:#2C4A6E;
  --pad:80px; --maxw:1440px;
  --f-head:Archivo,system-ui,sans-serif;
  --f-cond:'Saira Condensed',Archivo,sans-serif;
  --f-body:'Noto Sans','Noto Sans KR',system-ui,sans-serif;
}
html[lang="ko"]{--f-body:'Noto Sans KR','Noto Sans',system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--f-body);background:var(--white);color:var(--ink);line-height:1.5}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}a:hover{color:var(--navy)}
h1,h2,h3{margin:0;font-family:var(--f-head);color:var(--navy);letter-spacing:-.02em}
p{margin:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;z-index:99;background:#fff;padding:8px 12px}

/* atoms */
.lbl{font-family:var(--f-cond);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border:0;font-family:var(--f-head);font-weight:700;font-size:15px;cursor:pointer;text-align:center;transition:background .15s,color .15s}
.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:#0954a8;color:#fff}
.btn-navy{background:var(--navy);color:#fff}.btn-navy:hover{background:#163a60;color:#fff}
.btn-ghost{background:transparent;color:#fff;border:2px solid var(--sky)}.btn-ghost:hover{background:rgba(79,163,247,.15);color:#fff}
.btn-outline{background:#fff;color:var(--navy);border:2px solid var(--navy)}.btn-outline:hover{background:var(--bg2)}
.card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;color:inherit;transition:border-color .15s,box-shadow .15s}
a.card:hover{border-color:var(--blue);box-shadow:0 6px 18px rgba(14,42,71,.08);color:inherit}
.ph{background-color:var(--line);background-image:linear-gradient(var(--line2) 1px,transparent 1px),linear-gradient(90deg,var(--line2) 1px,transparent 1px);background-size:24px 24px;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;font-family:var(--f-cond);font-weight:600;letter-spacing:.12em;color:var(--muted);font-size:13px;text-transform:uppercase}
.media{object-fit:cover;width:100%;background:var(--bg2)}
.tag-sample{display:inline-block;background:#FFF4D6;color:#7A5A00;font-family:var(--f-cond);font-weight:700;letter-spacing:.1em;font-size:11px;padding:2px 6px;text-transform:uppercase;vertical-align:middle}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px}
.sec-head>div{display:flex;flex-direction:column;gap:8px}
.h2{font-size:34px;font-weight:800}
.more{font-family:var(--f-head);font-weight:700;font-size:15px;white-space:nowrap}
.more .short{display:none}

/* top bar */
.topbar{background:var(--navy);color:var(--soft);font-family:var(--f-cond);font-size:13px;font-weight:600;letter-spacing:.08em}
.topbar .wrap{height:36px;display:flex;align-items:center;justify-content:space-between}
.topbar .info{display:flex;gap:28px}.topbar .info a{color:var(--soft)}
.langs{display:flex;gap:18px}.langs a{color:var(--soft)}.langs a[aria-current]{color:#fff}

/* header */
.hdr{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50}
.hdr .wrap{height:84px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;flex-direction:column;gap:4px}
.logo b{font-family:var(--f-head);font-size:26px;font-weight:900;letter-spacing:-.03em;color:var(--navy);line-height:1}
.logo b span{color:var(--blue)}
.logo svg{width:150px;height:7px}
.nav{display:flex;align-items:center;gap:36px}
.nav>a:not(.btn){font-family:var(--f-head);font-weight:600;font-size:15px;color:var(--navy)}
.nav>a:not(.btn):hover,.nav>a[aria-current]{color:var(--blue)}
.nav .btn{color:#fff}
.mob{display:none;align-items:center;gap:6px}
.mob .lbl{padding:12px 8px;color:var(--navy)}
.burger{width:44px;height:44px;background:none;border:0;display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.drawer{display:none}

/* hero */
.hero{display:flex;min-height:560px;max-width:var(--maxw);margin:0 auto}
.hero-text{width:680px;flex-shrink:0;background:var(--navy);padding:88px var(--pad);display:flex;flex-direction:column;justify-content:center;gap:26px}
.hero-text .lbl{color:var(--sky)}
.hero h1{font-size:54px;font-weight:900;letter-spacing:-.03em;line-height:1.05;color:#fff}
.hero p{font-size:18px;line-height:1.6;color:var(--soft);max-width:480px}
.hero .btns{display:flex;gap:14px;margin-top:8px;flex-wrap:wrap}
.hero-media{flex-grow:1;min-height:560px}
.hero-band{background:var(--navy)}
.hero-band .hero{background:#fff}

/* sections */
.sec{padding-top:72px;display:flex;flex-direction:column;gap:28px}
.lines{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.lines .card{padding:28px;gap:16px;min-height:220px}
.lines svg{width:40px;height:40px}
.lines h3{font-size:20px;font-weight:800;letter-spacing:0}
.lines p{font-size:14px;line-height:1.55;color:var(--muted)}

.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.pcard .pimg{height:240px}
.pcard .pbody{padding:20px;display:flex;flex-direction:column;gap:6px}
.pcard .lbl{color:var(--mute2)}
.pcard .pname{font-family:var(--f-head);font-size:18px;font-weight:700;color:var(--navy);line-height:1.3}
.pcard .pmeta{font-family:var(--f-cond);font-size:14px;color:var(--muted);letter-spacing:.02em}

.how{margin-top:72px;background:var(--navy)}
.how .wrap{padding-top:64px;padding-bottom:64px;display:flex;flex-direction:column;gap:36px}
.how .lbl{color:var(--sky)}.how h2{color:#fff}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{border-top:3px solid var(--sky);padding-top:20px;display:flex;flex-direction:column;gap:10px}
.step .n{font-family:var(--f-cond);font-size:40px;font-weight:700;color:var(--sky);line-height:1}
.step h3{font-size:19px;font-weight:700;color:#fff;letter-spacing:0}
.step p{font-size:14px;line-height:1.55;color:var(--soft)}
.how .btn{display:none}

.quality{padding-top:72px;padding-bottom:72px;display:flex;gap:48px;align-items:center}
.quality .qimg{width:560px;height:340px;flex-shrink:0}
.quality .qtext{flex-grow:1;display:flex;flex-direction:column;gap:18px}
.quality .lbl{color:var(--blue)}
.quality p{font-size:16px;line-height:1.65;color:var(--muted)}
.badges{display:flex;gap:12px;flex-wrap:wrap}
.badges span{border:1px solid var(--line);padding:10px 14px;color:var(--navy)}

.band{background:var(--bg2);border-left:6px solid var(--blue);padding:40px 48px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.band b{display:block;font-family:var(--f-head);font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--navy);line-height:1.25}
.band span{display:block;font-size:15px;color:var(--muted);margin-top:6px}
.band .btn{flex-shrink:0}

/* footer */
.ftr{margin-top:72px;background:var(--navy)}
.ftr .wrap{padding-top:56px;padding-bottom:32px;display:flex;flex-direction:column;gap:40px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.fcol{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--soft)}
.fcol a{color:var(--soft)}.fcol a:hover{color:#fff}
.fcol .lbl{color:var(--sky)}
.fbrand{gap:14px}
.fbrand b{font-family:var(--f-head);font-size:24px;font-weight:900;letter-spacing:-.03em;color:#fff;line-height:1}
.fbrand b span{color:var(--sky)}
.fbrand .ko{font-family:'Noto Sans KR',sans-serif;font-size:13px;font-weight:700;letter-spacing:.3em;color:var(--soft2)}
.fbrand .addr{font-size:13px;line-height:1.7}
.fbottom{border-top:1px solid var(--navyline);padding-top:18px;display:flex;justify-content:space-between;gap:16px;font-family:var(--f-cond);font-size:13px;letter-spacing:.06em;color:var(--soft2);text-transform:uppercase}

/* page header (inner pages) */
.phead{background:var(--bg2);border-bottom:1px solid var(--line)}
.phead .wrap{padding-top:40px;padding-bottom:40px;display:flex;flex-direction:column;gap:12px}
.phead h1{font-size:40px;font-weight:900;letter-spacing:-.03em}
.crumb{font-family:var(--f-cond);font-size:14px;letter-spacing:.06em;color:var(--muted)}
.crumb a{color:var(--blue)}
.searchrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.searchrow .lbl{color:var(--muted)}
.searchrow input{width:420px;max-width:100%;height:44px;border:1px solid var(--line);padding:0 14px;font:14px var(--f-body);background:#fff}
.searchrow .btn{height:44px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:-1px}

/* products listing */
.plist{padding-top:40px;padding-bottom:40px;display:flex;gap:40px;align-items:flex-start}
.side{width:260px;flex-shrink:0;display:flex;flex-direction:column;gap:28px}
.fgroups{display:flex;flex-direction:column;gap:28px}
.fgroup{display:flex;flex-direction:column;gap:10px;border:0;padding:0;margin:0}
.fgroup legend,.fgroup .lbl{color:var(--navy);border-bottom:2px solid var(--navy);padding-bottom:8px;width:100%;margin-bottom:4px}
.chk{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink);min-height:32px;cursor:pointer}
.chk input{width:18px;height:18px;margin:0;accent-color:var(--blue)}
.chk .c{color:var(--mute2)}
.cta-box{background:var(--navy);padding:22px;display:flex;flex-direction:column;gap:12px}
.cta-box b{font-family:var(--f-head);font-size:17px;font-weight:800;color:#fff;line-height:1.25}
.cta-box .btn{height:44px}
.pmain{flex-grow:1;min-width:0;display:flex;flex-direction:column;gap:20px}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.toolbar .count{font-size:14px;color:var(--muted)}
.toolbar label{color:var(--muted)}
.toolbar select{height:40px;border:1px solid var(--line);padding:0 12px;font:14px var(--f-body);background:#fff}
.toolbar .sortw{display:flex;align-items:center;gap:10px}
.plist .pcard .pimg{height:220px}
.plist .pcard .pbody{padding:18px}
.plist .pcard .pname{font-size:17px}
.empty{padding:48px 24px;border:1px dashed var(--line2);text-align:center;color:var(--muted)}
.filter-toggle{display:none}
.linkbtn{background:none;border:0;padding:0;color:var(--blue);font:inherit;font-size:14px;cursor:pointer;text-align:left}

/* product detail */
.pd{padding-top:28px;display:flex;gap:48px}
.gallery{width:640px;flex-shrink:0;display:flex;flex-direction:column;gap:12px}
.gallery .main{height:480px}
.thumbs{display:flex;gap:12px}
.thumbs>*{width:118px;height:88px;flex-shrink:1;min-width:0}
.thumbs .on{border:2px solid var(--blue)}
.pinfo{flex-grow:1;display:flex;flex-direction:column;gap:18px;min-width:0}
.pinfo .lbl{color:var(--blue)}
.pinfo h1{font-size:36px;font-weight:900;letter-spacing:-.03em;line-height:1.1}
.pinfo .pno{font-family:var(--f-cond);font-size:16px;letter-spacing:.06em;color:var(--muted)}
.pinfo .pno b{color:var(--ink)}
.pinfo .desc{font-size:15px;line-height:1.65}
.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.facts>div{border:1px solid var(--line);padding:14px}
.facts .lbl{color:var(--mute2)}
.facts b{display:block;font-family:var(--f-head);font-weight:700;font-size:16px;color:var(--navy);margin-top:4px}
.pbtns{display:flex;gap:12px;margin-top:6px;flex-wrap:wrap}
.pbtns .btn-blue{flex-grow:1}
.small{font-size:13px;color:var(--muted)}
.notice{background:#FFF8E5;border:1px solid #F0DCA0;color:#5C4500;padding:10px 14px;font-size:13px}
.tabs-wrap{padding-top:48px}
.tabs{display:flex;gap:36px;border-bottom:1px solid var(--line);overflow-x:auto}
.tab{font-family:var(--f-head);font-weight:700;font-size:15px;padding:14px 0;color:var(--muted);border:0;border-bottom:3px solid transparent;background:none;cursor:pointer;white-space:nowrap}
.tab[aria-selected="true"]{color:var(--navy);border-bottom-color:var(--blue)}
.panel{border:1px solid var(--line);border-top:0}
.panel[hidden]{display:none}
.panel .txt{padding:20px 14px;font-size:14px;line-height:1.65}
.spec{display:grid;grid-template-columns:220px 1fr;border-top:1px solid var(--line)}
.spec:first-child{border-top:0}
.spec>div{padding:12px 14px;font-size:14px}
.spec>div:first-child{font-family:var(--f-cond);font-weight:700;letter-spacing:.08em;color:var(--muted);background:var(--bg2)}
.related{padding-top:48px;display:flex;flex-direction:column;gap:20px}
.related h2{font-size:24px;font-weight:800}
.related .pimg{height:170px}
.related .pbody{padding:16px}
.related .pname{font-size:16px}

/* about */
.about-hero{padding-top:56px;display:flex;gap:48px;align-items:center}
.about-hero .t{flex:1;display:flex;flex-direction:column;gap:18px}
.about-hero .t p{font-size:17px;line-height:1.7;color:var(--ink)}
.about-hero .t p+p{color:var(--muted);font-size:16px}
.about-hero .ph,.about-hero img{width:560px;height:360px;flex-shrink:0}
.why .card,.caps .card{padding:28px;gap:12px}
.why h3,.caps h3{font-size:19px;font-weight:800;letter-spacing:0}
.why p,.caps p{font-size:14px;line-height:1.6;color:var(--muted)}
.caps .card{border-top:3px solid var(--blue)}
.infotable{border:1px solid var(--line)}

/* contact */
.contact{padding-top:48px;display:flex;gap:48px;align-items:flex-start}
.form{flex:1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-family:var(--f-cond);font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:13px;color:var(--navy)}
.field label i{font-style:normal;color:var(--mute2);font-weight:600;text-transform:none;letter-spacing:.02em}
.field input,.field textarea{border:1px solid var(--line);padding:12px 14px;font:15px var(--f-body);background:#fff;width:100%}
.field textarea{min-height:140px;resize:vertical}
.form .note{grid-column:1/-1;background:var(--bg2);padding:14px 16px;font-size:14px;color:var(--muted);border-left:4px solid var(--sky)}
.form .actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form .status{font-size:14px}
.form .status.ok{color:#11733B}.form .status.err{color:#B3261E}
.hp{position:absolute;left:-9999px}
.cbox{width:400px;flex-shrink:0;background:var(--navy);color:var(--soft);padding:32px;display:flex;flex-direction:column;gap:18px}
.cbox h2{color:#fff;font-size:22px;font-weight:800}
.cbox .lbl{color:var(--sky);display:block;margin-bottom:4px}
.cbox a{color:#fff}
.cbox div{font-size:15px;line-height:1.6}

.nf{padding-top:96px;padding-bottom:24px;display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.nf .big{font-family:var(--f-cond);font-size:96px;font-weight:700;color:var(--sky);line-height:1}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  :root{--pad:48px}
  .hero-text{width:52%}
  .hero h1{font-size:46px}
  .nav{gap:24px}
  .quality .qimg{width:46%}
  .gallery{width:52%}
  .gallery .main{height:auto;aspect-ratio:4/3}
  .about-hero .ph,.about-hero img{width:46%;height:auto;aspect-ratio:14/9}
}
@media (max-width:1080px){
  .nav>a:not(.btn){display:none}
  .nav{gap:12px}
  .mob{display:flex}
  .mob .lbl{display:none}
  .drawer{display:block;position:fixed;inset:0;z-index:100;background:rgba(14,42,71,.5);opacity:0;pointer-events:none;transition:opacity .2s}
  .drawer .panel-in{position:absolute;right:0;top:0;bottom:0;width:min(340px,88vw);background:#fff;padding:20px;display:flex;flex-direction:column;gap:4px;transform:translateX(100%);transition:transform .2s;overflow-y:auto}
  .drawer.open{opacity:1;pointer-events:auto}
  .drawer.open .panel-in{transform:none}
  .drawer .close{align-self:flex-end}
  .drawer nav a{display:block;padding:14px 4px;border-bottom:1px solid var(--line);font-family:var(--f-head);font-weight:700;font-size:17px;color:var(--navy)}
  .drawer nav a[aria-current]{color:var(--blue)}
  .drawer .btn{margin-top:16px}
  .drawer .dl{display:flex;gap:18px;margin-top:20px}
  .drawer .dl a{color:var(--muted)}.drawer .dl a[aria-current]{color:var(--navy)}
  .lines,.steps,.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fgrid{grid-template-columns:1fr 1fr}
  .grid3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pd{flex-direction:column}
  .gallery{width:100%}
  .contact{flex-direction:column}
  .cbox{width:100%}
  .plist{flex-direction:column}
  .side{width:100%}
  .filter-toggle{display:inline-flex}
  .side .fgroups{display:none;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .side.open .fgroups{display:grid}
  .side .cta-box{display:none}
  .quality{flex-direction:column;align-items:stretch}
  .quality .qimg{width:100%;height:auto;aspect-ratio:560/340}
  .about-hero{flex-direction:column;align-items:stretch}
  .about-hero .ph,.about-hero img{width:100%}
}
@media (max-width:760px){
  :root{--pad:20px}
  .topbar{display:none}
  .hdr .wrap{height:64px}
  .logo b{font-size:22px}.logo svg{width:126px;height:6px}
  .nav .btn{display:none}
  .mob .lbl{display:inline-block}
  .hero{flex-direction:column;min-height:0}
  .hero-text{width:100%;padding:40px var(--pad);gap:16px}
  .hero-text .lbl{font-size:12px}
  .hero h1{font-size:32px;line-height:1.08}
  .hero p{font-size:15px;line-height:1.55}
  .hero .btns{flex-direction:column;gap:12px;margin-top:0}
  .hero .btns .btn{width:100%}
  .hero-media{min-height:220px;height:220px}
  .lbl{font-size:12px}
  .sec{padding-top:36px;gap:16px}
  .h2,.how h2{font-size:24px}
  .lines{gap:12px}
  .lines .card{padding:16px;gap:8px;min-height:120px}
  .lines svg{width:28px;height:28px}
  .lines h3{font-size:15px;line-height:1.2}
  .lines p{display:none}
  .sec-feat .lbl-top{display:none}
  .sec-feat .grid3{grid-template-columns:1fr;gap:12px}
  .sec-feat .pcard{flex-direction:row}
  .sec-feat .pcard .pimg{width:120px;height:auto;min-height:100px;flex-shrink:0}
  .sec-feat .pcard .pbody{padding:14px;gap:4px;justify-content:center}
  .sec-feat .pcard .pname{font-size:15px}
  .sec-feat .pcard .pmeta{font-size:13px}
  .sec-feat .pcard:nth-child(n+4){display:none}
  .more .long{display:none}
  .more .short{display:inline}
  .how{margin-top:36px}
  .how .wrap{padding-top:36px;padding-bottom:36px;gap:20px}
  .how .lbl{display:none}
  .steps{grid-template-columns:1fr;gap:14px}
  .step{border-top:0;padding-top:0;flex-direction:row;gap:14px;align-items:flex-start}
  .step .n{font-size:28px;width:36px;flex-shrink:0}
  .step h3{font-size:16px}
  .step p{font-size:13px}
  .how .btn{display:inline-flex}
  .quality{padding-top:36px;padding-bottom:36px;gap:20px}
  .quality p{font-size:15px}
  .band{flex-direction:column;align-items:stretch;padding:24px 20px;border-left-width:4px}
  .band b{font-size:20px}
  .ftr{margin-top:36px}
  .ftr .wrap{padding-top:36px;gap:28px}
  .fgrid{grid-template-columns:1fr;gap:24px}
  .fbottom{flex-direction:column;gap:6px}
  .phead .wrap{padding-top:24px;padding-bottom:24px}
  .phead h1{font-size:30px}
  .searchrow{flex-wrap:nowrap}
  .searchrow .lbl{display:none}
  .searchrow input{flex:1;width:auto;min-width:0}
  .plist{padding-top:24px;gap:20px}
  .side .fgroups{grid-template-columns:1fr}
  .grid3,.plist .grid3{grid-template-columns:1fr 1fr;gap:12px}
  .plist .pcard .pimg{height:140px}
  .plist .pcard .pbody{padding:12px}
  .plist .pcard .pname{font-size:15px}
  .grid4{grid-template-columns:1fr 1fr;gap:12px}
  .related .pimg{height:120px}
  .pinfo h1{font-size:28px}
  .facts{gap:8px}
  .facts>div{padding:12px}
  .facts b{font-size:15px}
  .pbtns{flex-direction:column}
  .pbtns .btn{width:100%}
  .tabs{gap:20px}
  .spec{grid-template-columns:120px 1fr}
  .spec>div{padding:10px 12px;font-size:13px}
  .form{grid-template-columns:1fr}
  .form .actions .btn{width:100%}
  .cbox{padding:24px 20px}
  .about-hero{padding-top:32px;gap:24px}
  .about-hero .t p{font-size:16px}
  .nf .big{font-size:72px}
}