:root{
  --green-main:#315C45;
  --green-deep:#173D2B;
  --green-sub:#789D75;
  --green-light:#DDE8D8;
  --accent:#B8D85A;
  --offwhite:#F7F8F3;
  --text:#242A26;
  --white:#FFFFFF;
  --radius:14px;
  --shadow:0 12px 32px rgba(23,61,43,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Pretendard","Noto Sans KR",-apple-system,BlinkMacSystemFont,"Malgun Gothic",sans-serif;
  color:var(--text);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
p{margin:0 0 1em}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.eyebrow{display:inline-block;font-size:.85rem;font-weight:700;color:var(--green-main);letter-spacing:.04em;margin-bottom:12px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--offwhite{background:var(--offwhite)}
.section--deep{background:var(--green-deep);color:var(--white)}
.section__head{max-width:680px;margin:0 0 48px}
.section__head h2{font-size:clamp(1.6rem,3vw,2.3rem)}
.section__head p{color:#565f5a;font-size:1.05rem}
.section--deep .section__head p{color:var(--green-light)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:16px 30px;border-radius:100px;font-weight:700;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:.2s}
.btn--primary{background:var(--accent);color:var(--green-deep)}
.btn--primary:hover{background:#a5c94a}
.btn--outline{border-color:var(--white);color:var(--white)}
.btn--outline:hover{background:rgba(255,255,255,.12)}
.btn--dark{background:var(--green-main);color:var(--white)}
.btn--dark:hover{background:var(--green-deep)}
.btn--sm{padding:11px 22px;font-size:.9rem}

/* header */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:.25s;background:transparent}
.nav.scrolled{background:rgba(247,248,243,.96);box-shadow:0 2px 16px rgba(0,0,0,.06);backdrop-filter:blur(6px)}
.nav__inner{max-width:1240px;margin:0 auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between}
.nav__logo{font-weight:800;font-size:1.15rem;color:var(--white);letter-spacing:-.02em}
.nav.scrolled .nav__logo{color:var(--green-deep)}
.nav__menu{display:flex;gap:26px;align-items:center}
.nav__menu a{font-size:.92rem;font-weight:600;color:rgba(255,255,255,.92)}
.nav.scrolled .nav__menu a{color:var(--text)}
.nav__cta{background:var(--accent);color:var(--green-deep)!important;padding:10px 20px;border-radius:100px;font-weight:700}
.nav__burger{display:none;background:none;border:0;font-size:1.5rem;color:var(--white);cursor:pointer}
.nav.scrolled .nav__burger{color:var(--green-deep)}

/* hero */
.hero{position:relative;height:92vh;min-height:640px;max-height:980px;display:flex;align-items:center;color:var(--white);overflow:hidden}
.hero__slides{position:absolute;inset:0;z-index:0}
.hero__slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.1s ease}
.hero__slide.active{opacity:1}
/* opacity 0 = no darkening filter/tint on the photo itself; legibility comes entirely
   from text-shadow + solid-fill controls below, not from dimming the image */
.hero__scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,22,16,0) 78%,rgba(10,22,16,.38) 100%);pointer-events:none}
.hero__inner{position:relative;z-index:2;max-width:1180px;margin:0 auto;padding:0 24px;width:100%;text-align:left;margin-top:90px}
.hero .eyebrow{color:var(--accent);text-shadow:0 2px 10px rgba(0,0,0,.55),0 1px 2px rgba(0,0,0,.7)}
.hero h1{font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:800;letter-spacing:-.02em;line-height:1.18;margin-bottom:22px;text-shadow:0 4px 24px rgba(0,0,0,.5),0 2px 6px rgba(0,0,0,.6)}
.hero h1 .hero__accent{color:var(--accent)}
.hero__lede{font-size:clamp(1.05rem,1.6vw,1.3rem);max-width:640px;color:#fff;margin-bottom:36px;text-shadow:0 2px 14px rgba(0,0,0,.55),0 1px 3px rgba(0,0,0,.6)}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__actions .btn{box-shadow:0 6px 20px rgba(0,0,0,.25)}
.hero__actions .btn--outline{background:rgba(15,30,22,.28);backdrop-filter:blur(2px)}

/* hero nav: dot pagination + progress bar, bottom-right like a slideshow control strip */
.hero__nav{position:absolute;left:0;right:0;bottom:44px;z-index:2}
.hero__nav-inner{max-width:1180px;margin:0 auto;padding:0 24px;display:flex;flex-direction:column;gap:14px;max-width:1180px}
.hero__dots{display:flex;gap:9px;justify-content:flex-end;filter:drop-shadow(0 1px 4px rgba(0,0,0,.6))}
.hero__dot{width:14px;height:14px;border-radius:50%;border:2px solid rgba(255,255,255,.9);background:none;padding:0;cursor:pointer;transition:.2s}
.hero__dot.active{background:var(--white)}
.hero__progress{height:3px;background:rgba(255,255,255,.45);border-radius:999px;overflow:hidden;max-width:420px;margin-left:auto;box-shadow:0 1px 4px rgba(0,0,0,.5)}
.hero__progress-bar{height:100%;width:0%;background:var(--accent)}

/* intro / story */
.story{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.story__img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--green-light)}
.story__img img{width:100%;height:100%;object-fit:cover}
.story h2{font-size:clamp(1.6rem,3.2vw,2.4rem)}
.story__points{margin-top:24px;display:grid;gap:14px}
.story__points li{display:flex;gap:12px;font-size:.98rem}
.story__points li b{color:var(--green-main)}

/* audience cards */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-4px)}
.card__img{aspect-ratio:4/3;background:var(--green-light);overflow:hidden}
.card__img img{width:100%;height:100%;object-fit:cover}
.card__body{padding:22px 22px 26px}
.card__body h3{font-size:1.08rem;margin-bottom:8px}
.card__body p{font-size:.92rem;color:#565f5a;margin-bottom:0}
.card__tag{display:inline-block;font-size:.78rem;font-weight:700;color:var(--green-main);background:var(--green-light);padding:4px 12px;border-radius:100px;margin-bottom:10px}

/* solutions */
.solution{display:flex;gap:14px;padding:20px;border:1px solid #E7EAE3;border-radius:var(--radius);transition:.2s}
.solution:hover{border-color:var(--green-sub);background:var(--offwhite)}
.solution__icon{font-size:1.6rem}
.solution h3{font-size:1rem;margin-bottom:4px}
.solution p{font-size:.88rem;color:#5c655f;margin-bottom:0}

/* steps */
.steps{display:grid;grid-template-columns:repeat(7,1fr);gap:14px}
.step{background:var(--white);border-radius:var(--radius);padding:22px 16px;box-shadow:var(--shadow)}
.step__num{font-size:1.6rem;font-weight:800;color:var(--accent);-webkit-text-stroke:1px var(--green-main)}
.step h3{font-size:.95rem;margin:10px 0 0}

/* table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;background:var(--white);font-size:.94rem}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid #EDEFEA}
thead th{background:var(--green-main);color:var(--white);font-weight:700}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:var(--offwhite)}

/* info cards */
.info-card{background:var(--white);border-left:4px solid var(--accent);border-radius:8px;padding:20px 22px;box-shadow:var(--shadow)}
.info-card h3{font-size:1rem;margin-bottom:6px}
.info-card p{font-size:.92rem;color:#565f5a;margin-bottom:0}
.notice{background:var(--green-light);border-radius:var(--radius);padding:20px 24px;font-size:.92rem;color:var(--green-deep)}

/* gallery / cases */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery__item{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:3/4;cursor:pointer;background:var(--green-light)}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:.3s}
.gallery__item:hover img{transform:scale(1.06)}
.gallery__cap{position:absolute;left:0;right:0;bottom:0;padding:14px;background:linear-gradient(0deg,rgba(0,0,0,.7),transparent);color:#fff;font-size:.82rem;font-weight:600}

/* regions */
.region-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:100px;background:var(--white);border:1px solid #E2E6DD;font-size:.9rem;font-weight:600}

/* network sites */
.network{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.network a{display:block;background:var(--white);border:1px solid #E7EAE3;border-radius:var(--radius);padding:20px 22px;transition:.2s}
.network a:hover{border-color:var(--green-main);box-shadow:var(--shadow)}
.network h3{font-size:.98rem;margin-bottom:6px;color:var(--green-deep)}
.network p{font-size:.85rem;color:#5c655f;margin-bottom:0}

/* company */
.company{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.biz-table{width:100%;border-collapse:collapse;background:transparent}
.biz-table th,.biz-table td{padding:12px 16px 12px 0;border-bottom:1px solid rgba(255,255,255,.14);text-align:left;font-size:.94rem}
.biz-table th{width:120px;color:var(--green-light);font-weight:600}
.section--deep .biz-table td{color:#fff}
.biz-table tbody tr:nth-child(even){background:transparent}
.biz-table td a{color:#fff;text-decoration:underline}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid #E5E8E0}
.faq-item summary{padding:22px 4px;font-weight:700;font-size:1.02rem;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(--green-main);transition:.2s}
.faq-item[open] summary::after{content:'−'}
.faq-item p{padding:0 4px 22px;color:#4a534d;font-size:.96rem}

/* cta */
.cta{text-align:center;padding:96px 0;background:var(--green-main);color:var(--white);border-radius:0}
.cta h2{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.cta p{color:var(--green-light);font-size:1.05rem;margin-bottom:32px}

/* footer */
.footer{background:var(--green-deep);color:rgba(255,255,255,.85);padding:56px 0 32px;font-size:.86rem}
.footer__top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:28px}
.footer__menu{display:flex;gap:20px;flex-wrap:wrap}
.footer__menu a{color:rgba(255,255,255,.85)}
.footer__biz{line-height:1.9;border-top:1px solid rgba(255,255,255,.14);padding-top:24px}
.footer__biz b{color:#fff}
.footer__sites{margin-top:14px;color:rgba(255,255,255,.6)}
.footer__sites a{color:rgba(255,255,255,.75)}
.footer__legal{margin-top:20px;color:rgba(255,255,255,.5);font-size:.8rem}

/* lightbox */
.lightbox{position:fixed;inset:0;background:rgba(10,20,14,.92);display:none;align-items:center;justify-content:center;z-index:2000;padding:40px}
.lightbox.open{display:flex}
.lightbox img{max-width:100%;max-height:90vh;border-radius:8px}
.lightbox__close{position:absolute;top:24px;right:32px;color:#fff;font-size:2rem;cursor:pointer}

@media(max-width:1024px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(4,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .company{grid-template-columns:1fr}
  .network{grid-template-columns:repeat(2,1fr)}
  .story{grid-template-columns:1fr;gap:32px}
}
@media(max-width:720px){
  .nav__menu{position:fixed;top:0;right:-100%;width:78%;max-width:320px;height:100vh;background:var(--white);flex-direction:column;align-items:flex-start;padding:90px 28px;gap:22px;transition:.25s;box-shadow:-8px 0 24px rgba(0,0,0,.12)}
  .nav__menu.open{right:0}
  .nav__menu a{color:var(--text)!important;font-size:1.05rem}
  .nav__burger{display:block}
  .nav__cta{order:99}
  .section{padding:56px 0}
  .grid--4,.grid--3{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .network{grid-template-columns:1fr}
  .hero{height:100vh}
  .hero__actions .btn{width:100%}
  .hero__nav{bottom:28px}
  .hero__progress{max-width:none}
  .footer__top{flex-direction:column;gap:20px}
}