:root{
  --teal:#0f7a6c; --green:#13a35b; --navy:#123f5c; --ink:#16212b; --muted:#5b6672;
  --line:#e2e8ec; --tint:#f3f7f6; --white:#fff; --r:16px; --wrap:1180px;
  --shadow:0 10px 30px rgba(18,63,92,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Pretendard Variable",Pretendard,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;color:var(--ink);background:var(--white);line-height:1.7;word-break:keep-all;overflow-wrap:break-word}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal)}
h1,h2,h3{line-height:1.3;margin:0 0 .6em;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px}
:focus-visible{outline:3px solid var(--green);outline-offset:2px}

/* header */
.hd{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.2)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--navy);font-weight:800;font-size:1.35rem;letter-spacing:.04em}
.gnb ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.gnb a{display:block;padding:8px 14px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem;transition:background .2s,color .2s}
.gnb a:hover,.gnb a[aria-current]{background:var(--tint);color:var(--teal)}
.gnb .nav-design{color:var(--green)}
.menu-btn{display:none;width:44px;height:44px;border:0;background:none;padding:10px;cursor:pointer}
.menu-btn span{display:block;height:2px;background:var(--navy);margin:5px 0;transition:transform .2s,opacity .2s}
@media (max-width:900px){
  .menu-btn{display:block}
  .gnb{position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--line);display:none}
  .gnb.open{display:block}
  .gnb ul{flex-direction:column;padding:8px 12px 16px}
  .gnb a{padding:14px 12px;border-radius:10px}
  .menu-btn[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-btn[aria-expanded=true] span:nth-child(2){opacity:0}
  .menu-btn[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,rgba(19,163,91,.18),transparent 60%),linear-gradient(135deg,#0d3a55 0%,#0f6a63 60%,#11845d 100%);color:#fff;padding:120px 0 110px}
.hero h1 em{font-style:normal;color:#9df0c4}
.hero .lead{max-width:640px;font-size:1.15rem;opacity:.92}
.hero .kicker{color:#9df0c4}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-design{background:linear-gradient(135deg,#123f5c,#0f7a6c)}
.sub-hero{background:linear-gradient(135deg,#0d3a55,#0f6a63);color:#fff;padding:80px 0 70px}
.sub-hero .kicker{color:#9df0c4}.sub-hero .lead{max-width:720px;opacity:.9;margin:0}
.sub-hero a{color:#9df0c4}
.kicker{font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:.5em}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--green);color:#fff;text-decoration:none;font-weight:700;border:2px solid var(--green);cursor:pointer;font:inherit;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(19,163,91,.3)}
.btn-line{background:transparent;color:inherit;border-color:currentColor}
.btn-line:hover{box-shadow:none;background:rgba(255,255,255,.08)}
.sec .btn-line{color:var(--teal)}

/* sections */
.sec{padding:96px 0}
.sec-tint{background:var(--tint)}
.sec-hd{max-width:760px;margin-bottom:44px}
.sec-hd p:last-child{color:var(--muted)}
.center{text-align:center;margin-top:32px}
.big{font-size:1.3rem;font-weight:700;color:var(--navy)}
.cards2,.cards3,.cards4{display:grid;gap:22px}
.cards2{grid-template-columns:repeat(2,1fr)}
.cards3{grid-template-columns:repeat(3,1fr)}
.cards4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1000px){.cards4{grid-template-columns:repeat(2,1fr)}.cards3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.cards2,.cards3,.cards4{grid-template-columns:1fr}.sec{padding:64px 0}}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;text-decoration:none;color:inherit;transition:transform .25s,box-shadow .25s}
a.card:hover,.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card p{color:var(--muted);margin:0}
.card-no{display:inline-block;font-weight:800;color:var(--green);margin-bottom:10px}
.cards-img .card{padding:0;overflow:hidden}
.cards-img .card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.cards-img .card h3,.cards-img .card p{padding:0 22px}
.cards-img .card h3{margin-top:18px}.cards-img .card p{padding-bottom:22px}
.story{display:grid;grid-template-rows:auto 1fr;background:#fff;border-radius:var(--r);overflow:hidden;text-decoration:none;color:inherit;border:1px solid var(--line);transition:transform .25s,box-shadow .25s}
.story:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.story img{aspect-ratio:16/9;object-fit:cover;width:100%}
.story div{padding:26px}.story p{color:var(--muted)}
.more{font-weight:700;color:var(--teal)}
.more::after{content:" →"}

.features{display:flex;flex-direction:column;gap:72px}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.feature.rev .feature-img{order:2}
.feature-img img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:var(--shadow)}
.feature-txt p{color:var(--muted)}
@media (max-width:800px){.feature{grid-template-columns:1fr;gap:20px}.feature.rev .feature-img{order:0}}
.check{list-style:none;padding:0;margin:0}
.check li{position:relative;padding-left:26px;margin:8px 0}
.check li::before{content:"";position:absolute;left:0;top:.6em;width:14px;height:8px;border-left:3px solid var(--green);border-bottom:3px solid var(--green);transform:rotate(-45deg) translateY(-4px)}
.check.sm li{font-size:.94rem;color:var(--muted)}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{background:#fff;border-radius:var(--r);padding:26px;border:1px solid var(--line);counter-increment:s}
.steps li::before{content:"0" counter(s);display:block;font-weight:800;color:var(--green);margin-bottom:8px}
.steps b{font-size:1.15rem;color:var(--navy)}.steps p{color:var(--muted);margin:.5em 0 0}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr}}@media (max-width:520px){.steps{grid-template-columns:1fr}}

.history{display:flex;flex-direction:column;gap:12px}
.yr{background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.yr summary{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;list-style:none;font-size:1.1rem}
.yr summary::-webkit-details-marker{display:none}
.yr summary b{color:var(--navy)}.yr summary span{color:var(--muted);font-size:.9rem}
.yr summary::after{content:"+";font-size:1.4rem;color:var(--teal);margin-left:12px}
.yr[open] summary::after{content:"–"}
.yr ul{margin:0;padding:0 24px 20px 44px;color:var(--muted)}
.yr li{margin:4px 0}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-grid img{border-radius:var(--r);box-shadow:var(--shadow)}
.about-grid p{color:var(--muted)}
@media (max-width:800px){.about-grid{grid-template-columns:1fr}}

.cta{background:linear-gradient(135deg,#123f5c,#0f7a6c);color:#fff}
.cta .kicker{color:#9df0c4}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-in p{opacity:.9;margin:0}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.cta .btn-line{color:#fff}

.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.contact-info dl{display:grid;grid-template-columns:72px 1fr;gap:10px 16px;margin:0 0 24px}
.contact-info dt{font-weight:700;color:var(--navy)}.contact-info dd{margin:0}
.contact-info .btn-line{color:var(--teal)}
.map iframe{width:100%;aspect-ratio:4/3;border:0;border-radius:var(--r);box-shadow:var(--shadow)}
@media (max-width:800px){.contact-grid{grid-template-columns:1fr}}

.tags{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:32px 0 0}
.tags li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-weight:600;color:var(--navy)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery img{border-radius:12px;aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .3s}
.gallery img:hover{transform:scale(1.02)}
@media (max-width:800px){.gallery{grid-template-columns:1fr 1fr}}
.awards{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.awards img{background:#fff;border-radius:12px;padding:10px}
@media (max-width:800px){.awards{grid-template-columns:repeat(3,1fr)}}

.apply{display:grid;grid-template-columns:1fr 1.3fr;gap:40px}
.note{color:var(--muted);font-size:.92rem}
.apply-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.apply-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.95rem}
.apply-form input,.apply-form textarea{font:inherit;font-size:16px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff}
.apply-form input:focus,.apply-form textarea:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 3px rgba(15,122,108,.15)}
.apply-form .full{grid-column:1/-1}
@media (max-width:800px){.apply{grid-template-columns:1fr}.apply-form{grid-template-columns:1fr}}

/* footer */
.ft{background:#0d2433;color:#c4d0d8;padding:56px 0 28px;font-size:.92rem}
.ft a{color:#e7f2ef}
.ft-in{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.logo-ft{color:#fff;margin-bottom:12px}
.ft p{margin:.3em 0}
.ft-nav{list-style:none;padding:0;margin:0;display:flex;gap:18px;flex-wrap:wrap}
.ft-nav a{text-decoration:none}
.ft-copy{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);opacity:.7}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}