:root{
  /* brand colours taken from the logo: navy #023c55, teal #19aa98 */
  --navy:#023c55; --navy-2:#0a5170; --navy-3:#012b3d; --ink:#17232e; --muted:#5a6b78;
  --teal:#19aa98; --green:#0e8072; --green-2:#e4f5f2; --mint:#8fe0d3;
  --cream:#f6f8f8; --line:#e2e8eb; --white:#fff; --warm:#d0893a;
  --radius:16px; --maxw:1120px; --gutter:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
section[id]{scroll-margin-top:72px}
body{margin:0;font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;color:var(--ink);background:var(--white);line-height:1.7;font-size:16px;word-break:keep-all;overflow-wrap:break-word}
img,svg{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
section{padding:80px 0}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--green);font-weight:700;margin:0 0 10px}
h1,h2,h3{line-height:1.3;margin:0 0 14px;letter-spacing:-.02em}
h1{font-size:clamp(30px,5.6vw,56px);letter-spacing:-.03em}
h2{font-size:clamp(24px,3.6vw,34px)}
h3{font-size:19px}
p{margin:0 0 12px}
.lead{color:var(--muted);font-size:17px;max-width:640px}
.alt{background:var(--cream)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;flex-shrink:0}
.logo img{height:34px;width:auto}
.nav{display:flex;gap:22px;font-size:15px}
.nav a{text-decoration:none;color:var(--muted)}
.nav a:hover{color:var(--navy)}
.header-cta{background:var(--navy);color:#fff;text-decoration:none;padding:9px 16px;border-radius:999px;font-weight:700;font-size:14px;white-space:nowrap}
@media(max-width:900px){.nav{display:none}}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;padding:15px 24px;border-radius:12px;font-weight:700;font-size:16px;border:0;cursor:pointer;font-family:inherit;min-height:52px}
.btn-primary{background:var(--warm);color:#fff}
.btn-light{background:#fff;color:var(--navy)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-dark{background:var(--navy);color:#fff}

/* hero: text only, logo mark as a quiet watermark */
.hero{position:relative;overflow:hidden;background:linear-gradient(150deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;padding:88px 0 56px}
.hero::after{content:"";position:absolute;right:-60px;top:50%;width:460px;height:430px;transform:translateY(-50%);background:url(logo-mark-white.png) no-repeat center/contain;opacity:.07;pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.hero .kicker{display:inline-block;font-size:15px;font-weight:700;color:var(--mint);margin:0 0 16px;padding:5px 14px;border:1px solid rgba(143,224,211,.4);border-radius:999px}
.hero h1{max-width:820px;margin-bottom:20px}
.hero .lead{color:#d3e2ea;font-size:18px;max-width:620px}
.facts{list-style:none;margin:48px 0 0;padding:24px 0 0;border-top:1px solid rgba(255,255,255,.16);display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.facts li{font-size:14px;color:#b9cfda;padding-left:30px;position:relative}
.facts li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;background:var(--teal)}
.facts li::after{content:"";position:absolute;left:7px;top:7px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.facts b{display:block;color:#fff;font-size:16px}

/* generic cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff}
.card .ico{width:44px;height:44px;border-radius:12px;background:var(--green-2);color:var(--green);display:grid;place-items:center;font-weight:800;margin-bottom:14px}
.card p{color:var(--muted);font-size:15px;margin:0}
.card .check{margin-top:14px}
.card .check li{font-size:15px;margin-bottom:6px}
.cards.cost{grid-template-columns:1fr 1fr;margin-top:0}
.cards.svc{grid-template-columns:repeat(4,1fr);gap:14px}
.cards.svc .card{padding:22px 20px}
@media(max-width:1060px){.cards.svc{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.cards,.cards.svc{grid-template-columns:1fr 1fr}}

.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:32px}}
.sub-h{margin-top:24px;font-size:18px}
.check{list-style:none;padding:0;margin:16px 0 0}
.check li{padding-left:28px;position:relative;margin-bottom:10px}
.check li::before{content:"";position:absolute;left:0;top:6px;width:17px;height:17px;border-radius:50%;background:var(--green)}
.check li::after{content:"";position:absolute;left:6px;top:9px;width:4px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}

/* work cases (before / after) */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.case{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;display:flex;flex-direction:column}
.case .ba{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line)}
.case figure{margin:0;aspect-ratio:1/1;overflow:hidden;background:var(--cream)}
.case figure img{width:100%;height:100%;object-fit:cover}
.case-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.case-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-bottom:8px}
.case-meta span{background:var(--green-2);color:var(--green);font-weight:700;padding:2px 10px;border-radius:999px}
.case h3{font-size:17px;margin-bottom:8px}
.case-body p:not(.case-meta){color:var(--muted);font-size:15px;margin:0 0 14px}
.case-body a{margin-top:auto;color:var(--green);font-weight:700;font-size:15px;text-decoration:none;padding:4px 0}
.case-body a::after{content:" →"}
.more{text-align:center;margin:28px 0 0}
.swipe-hint{display:none}
@media(max-width:900px){.cases{grid-template-columns:1fr 1fr}}

/* sorting diagram (promise section) */
.sort{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 10px 30px rgba(2,60,85,.06)}
.sort-head{font-weight:700;color:var(--navy);margin:0 0 18px;font-size:16px}
.sort ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.sort-row{display:grid;grid-template-columns:44px 1fr;gap:6px 14px;align-items:center;padding:16px;border-radius:14px;background:var(--cream)}
.sort-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff;grid-row:span 2}
.sort-ico svg{width:22px;height:22px}
.sort-row b{display:block;font-size:16px;color:var(--ink)}
.sort-row span{font-size:14px;color:var(--muted)}
.sort-row p{grid-column:2;margin:0;font-size:14px;font-weight:700}
.sort-row p::before{content:"→ "}
.sort-row.keep .sort-ico{background:var(--warm)} .sort-row.keep p{color:#a5651f}
.sort-row.ask .sort-ico{background:var(--navy)} .sort-row.ask p{color:var(--navy)}
.sort-row.out .sort-ico{background:var(--green)} .sort-row.out p{color:var(--green)}

/* process flow diagram */
.flow{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;counter-reset:none}
.flow::before{content:"";position:absolute;top:40px;left:12.5%;right:12.5%;border-top:2px dashed #b7dcd5}
.flow-step{position:relative;text-align:center}
.flow-node{position:relative;z-index:1;width:80px;height:80px;margin:0 auto 18px;border-radius:50%;background:#fff;border:2px solid var(--teal);color:var(--green);display:grid;place-items:center;box-shadow:0 0 0 8px var(--white)}
.flow-node svg{width:30px;height:30px}
.flow-node span{position:absolute;top:-6px;right:-8px;background:var(--navy);color:#fff;font-size:12px;font-weight:800;padding:2px 7px;border-radius:999px}
.flow-step:not(:last-child)::after{content:"";position:absolute;top:35px;right:-14px;width:10px;height:10px;border-top:2px solid var(--teal);border-right:2px solid var(--teal);transform:rotate(45deg)}
.flow-text h3{font-size:20px;margin-bottom:4px}
.flow-sub{color:var(--green);font-weight:700;font-size:14px;margin-bottom:12px}
.flow-text ul{list-style:none;margin:0;padding:0;display:inline-flex;flex-direction:column;gap:6px}
.flow-text li{font-size:14px;color:var(--muted);background:var(--cream);border-radius:999px;padding:5px 14px}

/* faq */
.faq{margin-top:12px;max-width:860px}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--green);font-size:22px;line-height:1;flex-shrink:0}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:12px 0 0;color:var(--muted)}

/* contact form */
.contact{background:var(--navy);color:#fff}
.contact .wrap{text-align:center}
.contact .eyebrow{color:var(--mint)}
.contact .lead{color:#d3e2ea;margin-left:auto;margin-right:auto;max-width:760px}
.form{background:#fff;color:var(--ink);border-radius:20px;padding:28px;margin:28px auto 0;max-width:640px;text-align:left}
.form label{display:block;font-weight:700;font-size:14px;margin:14px 0 6px}
.form input[type=text],.form input[type=tel],.form select,.form textarea{width:100%;padding:13px 14px;border:1px solid #cdd6dc;border-radius:10px;font:inherit;font-size:16px;background:#fff;color:var(--ink);-webkit-appearance:none;appearance:none}
.form select{background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6b78' stroke-width='2' fill='none'/%3E%3C/svg%3E") no-repeat right 14px center;padding-right:36px}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--teal);outline-offset:1px;border-color:var(--teal)}
.form textarea{min-height:110px;resize:vertical}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form label.consent{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:14px;font-weight:400;color:var(--muted)}
.consent input{margin-top:3px;width:20px;height:20px;flex-shrink:0;accent-color:var(--green)}
.consent a{color:var(--green)}
.hp{position:absolute;left:-9999px;opacity:0}
.form .btn{width:100%;margin-top:18px;background:var(--navy);color:#fff}
.form .btn[disabled]{opacity:.6}
.msg{margin-top:14px;font-size:15px;display:none;padding:12px 14px;border-radius:10px}
.msg.ok{display:block;background:var(--green-2);color:#0b5c52}
.msg.err{display:block;background:#fdecea;color:#9b2c20}
.notice{font-size:13px;color:var(--muted);margin-top:10px}

/* sub pages */
.subhero{background:linear-gradient(150deg,var(--navy),var(--navy-2));color:#fff;padding:48px 0 56px}
.subhero p.lead{color:#d3e2ea;max-width:760px}
.subhero h1{font-size:clamp(28px,4.4vw,44px);max-width:860px}
.subhero .kicker{color:var(--mint);font-weight:700;font-size:15px;margin:0 0 10px}
.subhero .answer{font-size:18px}
.crumb{font-size:13px;color:#a9c3cf;margin-bottom:22px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{text-decoration:none;color:#d3e2ea}
.crumb i{font-style:normal;opacity:.6}
.crumb span{color:#a9c3cf;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}
.split.top{align-items:start}
.split.top h2{font-size:clamp(22px,3vw,28px)}
.btn-outline{background:#fff;color:var(--navy);border:1px solid var(--line)}
.card-more{display:inline-block;margin-top:14px;color:var(--green);font-weight:700;font-size:15px;text-decoration:none}
.card-more::after{content:" →"}
.related{margin-top:28px;font-size:15px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center}
.related a{color:var(--green);font-weight:700;text-decoration:none;background:var(--green-2);padding:4px 12px;border-radius:999px}

/* case detail */
.case-detail{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
.case-photos{position:sticky;top:88px}
.case-photos .ba{display:grid;grid-template-columns:1fr 1fr;gap:4px;border-radius:var(--radius);overflow:hidden}
.case-photos figure{margin:0;aspect-ratio:1/1}
.case-photos img{width:100%;height:100%;object-fit:cover}
.photo-note{font-size:13px;color:var(--muted);margin-top:10px}
.case-facts{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;margin:0 0 28px;padding:18px 20px;background:var(--cream);border-radius:14px;font-size:15px}
.case-facts dt{color:var(--muted)}
.case-facts dd{margin:0;font-weight:700}
.case-info h2{font-size:22px;margin-top:8px}
.case-info>p{color:#3a4755}
.point{margin:28px 0 8px;padding:20px 22px;border-left:4px solid var(--teal);background:var(--green-2);border-radius:0 14px 14px 0}
.point b{display:block;color:var(--green);margin-bottom:6px}
.point p{margin:0;color:#24443f}
@media(max-width:900px){.case-detail{grid-template-columns:1fr;gap:28px}.case-photos{position:static}}

/* vertical flow variant (used inside narrow columns) */
.flow.vertical{grid-template-columns:1fr;gap:0;margin-top:20px}
.flow.vertical::before{display:block;top:28px;bottom:28px;left:27px;right:auto;border-top:0;border-left:2px dashed #b7dcd5}
.flow.vertical .flow-step{display:grid;grid-template-columns:56px 1fr;gap:16px;text-align:left;padding-bottom:22px}
.flow.vertical .flow-step:last-child{padding-bottom:0}
.flow.vertical .flow-step::after{display:none}
.flow.vertical .flow-node{width:56px;height:56px;margin:0;box-shadow:0 0 0 6px var(--white)}
.flow.vertical .flow-node svg{width:24px;height:24px}
.flow.vertical .flow-node span{font-size:11px;padding:1px 6px;right:-10px}
.flow.vertical .flow-text{padding-top:4px}
.flow.vertical .flow-text h3{font-size:18px}
.flow.vertical .flow-text ul{display:flex;flex-wrap:wrap;flex-direction:row}
.flow.vertical .flow-text li{font-size:13px;padding:4px 12px}
.prose h2{margin-top:36px;font-size:22px}
.prose p,.prose li{color:#3a4755}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.prose th{background:var(--cream);width:30%}

/* footer */
.footer{background:var(--navy-3);color:#a9bdc8;padding:44px 0 32px;font-size:14px}
.footer-logo{height:32px;width:auto;margin-bottom:14px}
.footer .cols{display:grid;grid-template-columns:1.2fr .7fr 1.3fr;gap:32px}
.foot-h{display:block;color:#fff;margin-bottom:10px}
.foot-svc{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot-svc a{text-decoration:none}
.footer dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.footer dt{color:#7d96a3}
.footer dd{margin:0}
.footer a{color:#a9bdc8}
.footer .links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px}
.copy{margin-top:26px;padding-top:18px;border-top:1px solid #12465e;font-size:13px}

/* sticky contact bar: mobile only */
.bar{display:none}

/* ---------------- tablet ---------------- */
@media(max-width:900px){
  .footer .cols{grid-template-columns:1fr 1fr}
  .footer .cols>div:last-child{grid-column:1/-1}
  .facts{grid-template-columns:1fr 1fr;gap:16px 12px}
  .flow{grid-template-columns:1fr 1fr;gap:36px 20px}
  .flow::before,.flow-step::after{display:none}
}

/* ---------------- mobile ---------------- */
@media(max-width:640px){
  :root{--gutter:16px}
  body{padding-bottom:76px}
  section{padding:56px 0}
  h2{margin-bottom:10px}
  .lead{font-size:16px}
  .site-header .wrap{height:58px}
  .logo img{height:28px}
  .header-cta{padding:8px 12px;font-size:13px}

  .hero{padding:52px 0 36px}
  .hero::after{width:260px;height:245px;right:-70px;top:auto;bottom:-40px;transform:none}
  .hero .kicker{font-size:13px;margin-bottom:14px}
  .hero h1{font-size:clamp(27px,7.6vw,34px)}
  .hero .lead{font-size:16px}
  .btns{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:24px}
  .btns .btn-primary{grid-column:1/-1}
  .btn{padding:13px 14px;font-size:15px;min-height:50px}
  .facts{margin-top:32px;padding-top:20px}
  .facts li{font-size:13px;padding-left:26px}
  .facts li::before{width:18px;height:18px}
  .facts li::after{left:6px;top:6px}
  .facts b{font-size:15px}

  /* horizontal swipe for long card lists */
  .swipe{display:flex;grid-template-columns:none;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;margin:24px calc(var(--gutter) * -1) 0;padding:0 var(--gutter) 6px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .swipe::-webkit-scrollbar{display:none}
  .swipe>*{flex:0 0 84%;scroll-snap-align:start;scroll-margin-left:var(--gutter)}
  .swipe-hint{display:block;text-align:right;font-size:13px;color:var(--muted);margin:10px 0 0}
  .swipe-hint::after{content:" →"}
  .more{margin-top:20px}
  .more .btn{width:100%}

  .situ{grid-template-columns:1fr;gap:10px;margin-top:20px}
  .situ .card{padding:16px 18px;display:grid;grid-template-columns:36px 1fr;gap:2px 12px;align-items:start}
  .situ .ico{width:36px;height:36px;border-radius:10px;font-size:14px;margin:0;grid-row:span 2}
  .situ h3{font-size:16px;margin:0}
  .situ p{font-size:14px}

  .card{padding:20px}
  .cards.cost{gap:10px}
  .cards.cost .card{padding:16px}
  .cards.cost h3{font-size:16px;margin-bottom:6px}
  .cards.cost p{font-size:14px}

  .sort{padding:20px}
  .sort-row{padding:14px;grid-template-columns:40px 1fr;gap:4px 12px}
  .sort-ico{width:40px;height:40px}

  /* vertical timeline */
  .flow{grid-template-columns:1fr;gap:0;margin-top:28px}
  .flow::before{display:block;top:28px;bottom:28px;left:27px;right:auto;border-top:0;border-left:2px dashed #b7dcd5}
  .flow-step{display:grid;grid-template-columns:56px 1fr;gap:16px;text-align:left;padding-bottom:26px}
  .flow-step:last-child{padding-bottom:0}
  .flow-node{width:56px;height:56px;margin:0;box-shadow:0 0 0 6px var(--white)}
  .flow-node svg{width:24px;height:24px}
  .flow-node span{font-size:11px;padding:1px 6px;right:-10px}
  .flow-text{padding-top:4px}
  .flow-text h3{font-size:18px}
  .flow-sub{margin-bottom:8px}
  .flow-text ul{display:flex;flex-wrap:wrap;flex-direction:row}
  .flow-text li{font-size:13px;padding:4px 12px}

  .faq summary{font-size:16px}
  .contact .wrap{text-align:left}
  .contact .lead{margin-left:0}
  .form{padding:20px;border-radius:16px}
  .form .row{grid-template-columns:1fr;gap:0}

  .footer{padding:36px 0 28px}
  .footer .cols{grid-template-columns:1fr;gap:24px}
  .foot-svc{grid-template-columns:1fr 1fr}
  .subhero{padding:32px 0 40px}
  .subhero .answer{font-size:16px}
  .case-facts{font-size:14px;padding:14px 16px}
  .case-info h2{font-size:19px}
  .case-info .btns{grid-template-columns:1fr}
  .related{font-size:14px}
  .footer dl{gap:4px 12px;font-size:13px}

  .bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));gap:8px;box-shadow:0 -4px 16px rgba(2,60,85,.08)}
  .bar a{flex:1;text-align:center;padding:12px 6px;border-radius:12px;font-weight:700;text-decoration:none;font-size:15px}
  .bar .t{background:var(--navy);color:#fff}
  .bar .s{background:var(--green-2);color:#0b5c52}
  .bar .f{background:var(--warm);color:#fff}
}

/* guides */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.gallery figure{margin:0;aspect-ratio:4/3;overflow:hidden;border-radius:12px;background:var(--cream)}
.gallery img{width:100%;height:100%;object-fit:cover}
@media(max-width:700px){.gallery{grid-template-columns:1fr 1fr}}
.guide-detail{max-width:860px}
.guide-body h2{margin-top:34px;font-size:22px}
.guide-body p{color:#3a4755}
.guide-body .btns{margin-top:28px}
.steps-list{padding-left:22px;margin:12px 0}
.steps-list li{margin-bottom:6px}
.guides{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}
@media(max-width:900px){.guides{grid-template-columns:1fr}}
.guide-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;text-decoration:none;color:inherit}
.guide-card:hover{border-color:var(--green)}
.guide-card img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.guide-card span{display:flex;flex-direction:column;gap:6px;padding:18px 20px 22px}
.guide-card em{font-style:normal;font-size:13px;font-weight:700;color:var(--green)}
.guide-card b{font-size:18px;line-height:1.4}
.guide-card small{font-size:14px;color:var(--muted);line-height:1.6}

@media(min-width:901px){.cases.cases-2{grid-template-columns:repeat(2,1fr);max-width:760px;margin-left:auto;margin-right:auto}}