:root{
  --dark:#0b1f16;
  --green:#1f8a5c;
  --green-light:#4fd18b;
  --cream:#f6f5ef;
  --text:#1b1f1c;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Segoe UI",sans-serif;
  color:var(--text);
  background:var(--cream);
  line-height:1.5;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;}
button{font:inherit;cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{line-height:1.3;}
img{display:block;max-width:100%;}

/* placeholder media block: shows label until a real <img> loads successfully */
.media.ph{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,#123b28,#1f8a5c 60%,#4fd18b);
  min-height:220px;
}
.media.ph::before{
  content:attr(data-label);
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  padding:12px;text-align:center;
  color:rgba(255,255,255,.85);
  font-size:.85rem;
  z-index:0;
}
.media.ph img{
  position:absolute;inset:0;z-index:1;
  width:100%;height:100%;object-fit:cover;
}

.btn{
  display:inline-block;
  padding:14px 28px;
  border-radius:999px;
  font-weight:600;
  transition:transform .15s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn--primary{background:var(--green);color:#fff;}
.btn--outline{border:2px solid #fff;color:#fff;}

.section-eyebrow{
  text-align:center;
  font-size:1.6rem;
  font-weight:800;
  margin-bottom:36px;
  letter-spacing:-.02em;
}

/* nav */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(11,31,22,.85);
  backdrop-filter:blur(6px);
}
.nav__inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 24px;color:#fff;
}
.nav__logo{font-weight:800;font-size:1.1rem;}
.nav__menu{display:flex;gap:24px;font-size:.9rem;margin-left:auto;}
.nav__menu a:hover{color:var(--green-light);}
.nav__phone{background:var(--green);padding:8px 16px;border-radius:999px;font-size:.85rem;white-space:nowrap;}
.nav__burger{display:none;color:#fff;font-size:1.4rem;line-height:1;}
@media(max-width:760px){
  .nav__menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;background:var(--dark);
  }
  .nav__menu.open{display:flex;}
  .nav__menu a{padding:14px 24px;border-top:1px solid rgba(255,255,255,.1);}
  .nav__burger{display:block;}
}

/* hero */
.hero{
  position:relative;overflow:hidden;
}
.hero__split{height:60vh;min-height:360px;display:flex;}
.hero__half{flex:1;overflow:hidden;}
.hero__half img{width:100%;height:100%;object-fit:cover;}
@media(max-width:760px){.hero__split{flex-direction:column;height:auto;}}
.hero__overlay{display:none;}
.hero__content{
  text-align:center;color:var(--text);padding:48px 24px;max-width:720px;margin:0 auto;
}
.hero__content h1{font-size:1.1rem;letter-spacing:.3em;font-weight:600;opacity:.85;margin-bottom:18px;text-align:right;}
.hero__main{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;margin-bottom:16px;}
.hero__sub{font-size:1.1rem;opacity:.75;margin-bottom:32px;}
.hero__cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.hero__cta .btn--outline{border-color:var(--green);color:var(--green);}

/* why */
.why{padding:100px 24px;max-width:1200px;margin:0 auto;}
.why__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.why__card h3{font-size:1.2rem;margin:16px 0 8px;}
.why__card p{color:#555;}
.why__img{border-radius:var(--radius);height:200px;}
@media(max-width:900px){.why__grid{grid-template-columns:1fr;}}

/* services */
.services{padding:100px 24px;max-width:1200px;margin:0 auto;}
.services__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.services__card{
  text-align:center;padding:32px 20px;border-radius:var(--radius);
  background:#fff;box-shadow:0 4px 20px rgba(0,0,0,.06);
}
.services__icon{font-size:2rem;display:block;margin-bottom:14px;}
.services__card h3{font-size:1.05rem;margin-bottom:8px;}
.services__card p{color:#555;font-size:.9rem;}
@media(max-width:900px){.services__grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.services__grid{grid-template-columns:1fr;}}

/* projects */
.projects{padding:100px 24px;background:#fff;}
.project{
  max-width:1200px;margin:0 auto 100px;
  display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center;
}
.project--reverse{direction:rtl;}
.project--reverse>*{direction:ltr;}
.project__tag{color:var(--green);font-weight:700;font-size:.85rem;letter-spacing:.08em;}
.project__text h3{font-size:1.8rem;margin:12px 0 16px;}
.project__text p{color:#555;}
.project__gallery{
  display:grid;grid-template-columns:repeat(2,1fr);gap:12px;
}
.project__gallery .media{border-radius:var(--radius);height:160px;cursor:pointer;}
@media(max-width:900px){
  .project{grid-template-columns:1fr;}
  .project--reverse{direction:ltr;}
}

/* flow */
.flow{padding:80px 24px;background:var(--dark);color:#fff;}
.flow__steps{
  max-width:1000px;margin:0 auto;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;
  font-weight:700;text-align:center;
}
.flow__steps i{opacity:.5;font-style:normal;}

/* expand */
.expand{padding:100px 24px;max-width:1200px;margin:0 auto;}
.expand__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.expand__card{border-radius:var(--radius);height:260px;cursor:default;}
.expand__label{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  padding:20px;color:#fff;
  background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);
}
.expand__label p{
  max-height:0;overflow:hidden;opacity:0;font-size:.85rem;
  transition:max-height .25s ease,opacity .25s ease;
}
.expand__card:hover .expand__label p{max-height:60px;opacity:1;margin-top:6px;}
@media(hover:none){.expand__label p{max-height:60px;opacity:1;margin-top:6px;}}
@media(max-width:900px){.expand__grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.expand__grid{grid-template-columns:1fr;}}

/* gallery */
.gallery{padding:100px 24px;background:#fff;}
.gallery__filter{
  display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:36px;
}
.gallery__filter button{
  padding:8px 18px;border-radius:999px;border:1px solid #ccc;font-size:.85rem;
}
.gallery__filter button.active{background:var(--green);color:#fff;border-color:var(--green);}
.gallery__grid{
  max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.gallery__item{border-radius:var(--radius);height:220px;cursor:pointer;}
.gallery__item.hide{display:none;}
@media(max-width:900px){.gallery__grid{grid-template-columns:repeat(2,1fr);}}

/* experience */
.experience{max-width:1100px;margin:0 auto;padding:100px 24px;}
.experience__row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:stretch;margin-bottom:64px;
}
.experience__row--reverse{direction:rtl;}
.experience__row--reverse>*{direction:ltr;}
.experience__img{height:100%;min-height:360px;border-radius:var(--radius);}
.experience p{font-size:1.6rem;font-weight:700;}
.experience__detail{font-size:1rem;font-weight:400;color:#666;margin-top:16px;line-height:1.6;}
@media(max-width:760px){
  .experience__row,.experience__row--reverse{grid-template-columns:1fr;direction:ltr;}
}

/* faq */
.faq{padding:100px 24px;max-width:800px;margin:0 auto;}
.faq__list{display:flex;flex-direction:column;gap:12px;}
.faq__item{
  background:#fff;border-radius:var(--radius);padding:20px 24px;
  box-shadow:0 4px 20px rgba(0,0,0,.06);
}
.faq__item summary{
  font-weight:700;cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq__item summary::-webkit-details-marker{display:none;}
.faq__item summary::after{content:"+";font-size:1.3rem;color:var(--green);flex-shrink:0;}
.faq__item[open] summary::after{content:"−";}
.faq__item p{color:#555;margin-top:12px;line-height:1.6;}

/* cta */
.cta{padding:140px 24px;text-align:center;min-height:auto;}
.cta__overlay{position:absolute;inset:0;background:rgba(0,0,0,.55);z-index:1;}
.cta__content{position:relative;z-index:2;color:#fff;max-width:640px;margin:0 auto;}
.cta__content h2{font-size:clamp(1.6rem,4vw,2.4rem);margin-bottom:16px;}
.cta__content p{margin-bottom:32px;opacity:.9;}
.cta__buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* footer */
.footer{background:var(--dark);color:#fff;text-align:center;padding:48px 24px;}
.footer__menu{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-bottom:20px;font-size:.9rem;}
.footer__menu a:hover{color:var(--green-light);}
.footer__brand{font-weight:700;margin-bottom:8px;}
.footer__biz{opacity:.7;font-size:.8rem;line-height:1.7;}
.footer__biz a{text-decoration:underline;}
.footer__sites{opacity:.6;font-size:.78rem;line-height:1.8;margin-top:14px;padding-top:14px;border-top:1px solid rgba(255,255,255,.15);}
.footer__sites a{text-decoration:underline;}

/* lightbox */
.lightbox{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);
  z-index:100;align-items:center;justify-content:center;
}
.lightbox.open{display:flex;}
.lightbox img{max-width:90vw;max-height:85vh;object-fit:contain;}
.lightbox__close{
  position:absolute;top:20px;right:32px;color:#fff;font-size:2.4rem;cursor:pointer;
}