/* 시안 5 — BEFORE / AFTER FOCUS: 배민/당근 톤 */
:root{
  --ink:#0d0d0d;
  --bg:#ffffff;
  --paper:#fafafa;
  --yellow:#ffe600;
  --yellow-d:#f0d600;
  --green:#1ec760;
  --line:#e8e8e8;
  --muted:#6b6b6b;
}
body{background:var(--bg); color:var(--ink); font-family:'Pretendard Variable',system-ui,sans-serif; font-weight:500}
.os-kakao-fab{background:var(--yellow); color:#1a1a1a; font-weight:800}

.ba-nav{position:sticky; top:0; z-index:40; background:#fff; border-bottom:2px solid var(--ink)}
.ba-nav__inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.ba-nav__brand{display:flex; align-items:center; gap:10px; font-weight:900; font-size:20px; letter-spacing:-.03em}
.ba-nav__brand-emoji{display:inline-grid; place-items:center; width:34px; height:34px; background:var(--yellow); border-radius:10px; font-size:18px}
.ba-nav__menu{display:flex; gap:24px; font-weight:700; font-size:14px}
.ba-nav__menu a:hover, .ba-nav__menu a.active{color:var(--yellow-d)}
.ba-nav__cta{padding:10px 20px; background:var(--ink); color:#fff; border-radius:999px; font-weight:800; font-size:13px}
.ba-nav__cta:hover{background:#000; transform:scale(1.05)}
@media(max-width:720px){.ba-nav__menu{display:none}}

/* hero */
.ba-hero{padding:48px 0 80px; background:linear-gradient(180deg,#fff 0%, var(--paper) 100%); position:relative}
.ba-hero__grid{display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center}
.ba-hero__sticker{display:inline-flex; align-items:center; gap:8px; padding:8px 16px; background:var(--yellow); border-radius:999px; font-weight:800; font-size:13px; transform:rotate(-2deg)}
.ba-hero__sticker::before{content:"⚡"; font-size:14px}
.ba-hero h1{font-size:clamp(40px,7vw,80px); font-weight:900; line-height:1.05; letter-spacing:-.04em; margin:18px 0 16px}
.ba-hero h1 mark{background:var(--yellow); padding:2px 8px; border-radius:6px; color:var(--ink)}
.ba-hero__lead{font-size:17px; line-height:1.6; color:var(--muted); max-width:520px; margin-bottom:28px}
.ba-hero__cta{display:flex; gap:12px; flex-wrap:wrap}
.ba-btn{display:inline-flex; align-items:center; gap:10px; padding:16px 28px; border-radius:14px; font-weight:800; font-size:15px}
.ba-btn--primary{background:var(--ink); color:#fff}
.ba-btn--primary:hover{background:#000; transform:translateY(-2px); box-shadow:0 12px 24px -10px rgba(0,0,0,.4)}
.ba-btn--yellow{background:var(--yellow); color:var(--ink)}
.ba-btn--yellow:hover{background:var(--yellow-d); transform:translateY(-2px)}
.ba-btn--ghost{background:#fff; color:var(--ink); border:2px solid var(--ink)}

/* before/after slider */
.ba-slider{position:relative; aspect-ratio:4/3; border-radius:24px; overflow:hidden; user-select:none; box-shadow:0 30px 60px -20px rgba(0,0,0,.25); border:3px solid var(--ink)}
.ba-slider__before, .ba-slider__after{position:absolute; inset:0; display:grid; place-items:center; font-weight:900; font-size:80px}
.ba-slider__before{background:linear-gradient(135deg,#7c6e5a,#3d342a); color:#a89882}
.ba-slider__before::after{content:"먼지·곰팡이"; font-size:14px; position:absolute; left:18px; top:18px; padding:6px 12px; background:rgba(255,255,255,.18); backdrop-filter:blur(6px); border-radius:999px; color:#fff; font-weight:700}
.ba-slider__after{background:linear-gradient(135deg,#e6f4ff,#fff); color:#1ec760; clip-path:inset(0 0 0 50%)}
.ba-slider__after::after{content:"청결 100%"; font-size:14px; position:absolute; right:18px; top:18px; padding:6px 12px; background:var(--green); color:#fff; border-radius:999px; font-weight:800}
.ba-slider__handle{position:absolute; top:0; bottom:0; left:50%; width:4px; background:#fff; box-shadow:0 0 0 2px var(--ink); cursor:ew-resize}
.ba-slider__handle::after{content:"⇆"; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:48px; height:48px; background:var(--yellow); border:3px solid var(--ink); border-radius:50%; display:grid; place-items:center; font-weight:900; font-size:20px}
.ba-slider__labels{position:absolute; left:18px; bottom:18px; display:flex; gap:8px}
.ba-slider__labels span{padding:6px 14px; border-radius:999px; font-weight:800; font-size:12px}
.ba-slider__labels span.b{background:rgba(0,0,0,.6); color:#fff}
.ba-slider__labels span.a{background:var(--yellow); color:var(--ink)}
@media(max-width:760px){.ba-hero__grid{grid-template-columns:1fr}}

/* trust badges (회사 소개 인근) */
.ba-trust{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:48px}
.ba-trust__item{padding:18px 16px; background:var(--paper); border:2px solid var(--ink); border-radius:16px; text-align:center}
.ba-trust__item strong{display:block; font-size:24px; font-weight:900; color:var(--ink); letter-spacing:-.02em}
.ba-trust__item span{font-size:12px; color:var(--muted); font-weight:700}
@media(max-width:680px){.ba-trust{grid-template-columns:repeat(2,1fr)}}

/* sections */
.ba-sec{padding:96px 0}
.ba-sec--soft{background:var(--paper)}
.ba-sec__head{text-align:center; margin-bottom:48px}
.ba-sec__sticker{display:inline-block; padding:6px 14px; background:var(--yellow); border-radius:999px; font-weight:800; font-size:12px; margin-bottom:14px}
.ba-sec__title{font-size:clamp(28px,4vw,48px); font-weight:900; letter-spacing:-.03em; margin:0 0 12px}
.ba-sec__title mark{background:var(--yellow); padding:2px 8px; border-radius:6px}
.ba-sec__lead{color:var(--muted); max-width:600px; margin:0 auto; font-size:15px; line-height:1.6}

/* services */
.ba-svc{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:18px}
.ba-svc__card{background:#fff; border:2px solid var(--ink); border-radius:20px; padding:24px; display:flex; flex-direction:column; gap:14px; transition:transform .2s, box-shadow .2s}
.ba-svc__card:hover{transform:translateY(-4px); box-shadow:8px 8px 0 var(--ink)}
.ba-svc__badge{display:inline-flex; align-items:center; gap:6px; padding:5px 12px; background:var(--yellow); border-radius:999px; font-size:11px; font-weight:800; align-self:flex-start}
.ba-svc__badge::before{content:"●"; color:var(--green)}
.ba-svc__name{font-size:22px; font-weight:900; letter-spacing:-.02em; line-height:1.2; margin:0}
.ba-svc__sub{font-size:11px; font-weight:700; letter-spacing:.1em; color:var(--muted); text-transform:uppercase}
.ba-svc__sum{color:#444; font-size:14px; line-height:1.6; margin:0}
.ba-svc__compare{display:grid; grid-template-columns:1fr auto 1fr; gap:8px; padding:14px; background:var(--paper); border-radius:12px; align-items:center; text-align:center}
.ba-svc__compare > div{padding:8px}
.ba-svc__compare > div:first-child{color:#7a6a5a; font-size:13px; font-weight:700}
.ba-svc__compare > div:last-child{color:var(--green); font-size:13px; font-weight:800}
.ba-svc__compare > span{color:var(--ink); font-weight:900; font-size:18px}
.ba-svc__list{display:flex; flex-direction:column; gap:6px}
.ba-svc__list li{display:flex; gap:8px; font-size:13px; align-items:center}
.ba-svc__list li::before{content:"✅"; flex:0 0 auto}
.ba-svc__foot{margin-top:auto; display:flex; justify-content:space-between; align-items:center; padding-top:14px; border-top:2px dashed var(--line)}
.ba-svc__price{font-weight:800; font-size:13px}
.ba-svc__cta{padding:8px 16px; background:var(--ink); color:#fff; border-radius:999px; font-weight:800; font-size:13px}

/* process — fun horizontal */
.ba-proc{display:grid; grid-template-columns:repeat(6,1fr); gap:14px; margin-top:48px}
.ba-proc__step{padding:18px; background:#fff; border:2px solid var(--ink); border-radius:16px; text-align:center}
.ba-proc__no{display:inline-grid; place-items:center; width:42px; height:42px; background:var(--yellow); border:2px solid var(--ink); border-radius:50%; font-weight:900; font-size:18px; margin-bottom:10px}
.ba-proc__title{font-weight:900; font-size:14px; margin:0 0 4px}
.ba-proc__desc{font-size:12px; color:var(--muted); line-height:1.5; margin:0}
@media(max-width:880px){.ba-proc{grid-template-columns:repeat(3,1fr)}}
@media(max-width:520px){.ba-proc{grid-template-columns:repeat(2,1fr)}}

/* guarantees */
.ba-guard{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:48px}
.ba-guard__card{padding:24px; background:#fff; border:2px solid var(--ink); border-radius:16px; display:flex; flex-direction:column; gap:8px}
.ba-guard__icon{display:inline-grid; place-items:center; width:42px; height:42px; background:var(--yellow); border:2px solid var(--ink); border-radius:12px; font-size:20px; font-weight:900}
.ba-guard__title{font-weight:900; font-size:16px; margin:0}
.ba-guard__desc{color:var(--muted); font-size:13px; line-height:1.6; margin:0}
@media(max-width:760px){.ba-guard{grid-template-columns:repeat(2,1fr)}}

/* faq */
.ba-faq{display:flex; flex-direction:column; gap:10px; max-width:780px; margin:0 auto}
.ba-faq details{background:#fff; border:2px solid var(--ink); border-radius:14px; padding:18px 22px}
.ba-faq summary{cursor:pointer; list-style:none; display:flex; gap:14px; align-items:center; font-weight:800}
.ba-faq summary::before{content:"Q."; color:var(--yellow-d); font-size:18px; font-weight:900}
.ba-faq summary::after{content:"+"; margin-left:auto; font-weight:900}
.ba-faq details[open] summary::after{content:"−"}
.ba-faq__a{margin:14px 0 0 28px; color:var(--muted); line-height:1.7}

/* CTA band */
.ba-cta{padding:80px 0; background:var(--ink); color:#fff; text-align:center}
.ba-cta h2{font-size:clamp(28px,4.5vw,52px); font-weight:900; margin:0 0 12px; letter-spacing:-.03em}
.ba-cta h2 mark{background:var(--yellow); color:var(--ink); padding:2px 10px; border-radius:8px}
.ba-cta p{color:#bdbdbd; font-size:16px; max-width:520px; margin:0 auto 28px}
.ba-cta__btn{display:inline-flex; align-items:center; gap:8px; padding:18px 32px; background:var(--yellow); color:var(--ink); border-radius:14px; font-weight:900; font-size:16px}
.ba-cta__btn:hover{transform:translateY(-2px); box-shadow:0 16px 32px -10px rgba(255,230,0,.5)}

/* form */
.ba-form{display:grid; grid-template-columns:repeat(2,1fr); gap:14px; padding:32px; background:#fff; border:2px solid var(--ink); border-radius:20px}
.ba-form label{display:flex; flex-direction:column; gap:6px; font-size:12px; font-weight:800; color:var(--ink)}
.ba-form .full{grid-column:1/-1}
.ba-form input, .ba-form select, .ba-form textarea{
  background:var(--paper); border:2px solid var(--line); border-radius:10px; padding:12px 14px;
  font-size:14px; outline:none; font-family:inherit; font-weight:500;
}
.ba-form input:focus, .ba-form select:focus, .ba-form textarea:focus{border-color:var(--ink)}
.ba-form button{grid-column:1/-1; padding:18px; background:var(--yellow); color:var(--ink); border-radius:14px; font-weight:900; font-size:16px; border:2px solid var(--ink)}
.ba-form button:hover{transform:translateY(-2px); box-shadow:8px 8px 0 var(--ink)}
@media(max-width:680px){.ba-form{grid-template-columns:1fr}}

/* footer */
.ba-footer{padding:60px 0 100px; background:var(--paper); border-top:2px solid var(--ink)}
.ba-footer .os-container{display:grid; grid-template-columns:2fr 1fr 1fr; gap:32px}
.ba-footer h4{font-weight:900; margin:0 0 12px; font-size:13px}
.ba-footer__brand{font-size:24px; font-weight:900; letter-spacing:-.03em}
.ba-footer p, .ba-footer a{font-size:13px; color:var(--muted); margin:4px 0; font-weight:600}
.ba-footer a:hover{color:var(--ink)}
.ba-footer__qr{display:flex; gap:14px; align-items:center; margin-top:14px}
.ba-footer__qr img{width:88px; height:88px; padding:6px; background:#fff; border:2px solid var(--ink); border-radius:10px}
.ba-footer__copy{grid-column:1/-1; padding-top:18px; border-top:2px solid var(--ink); font-size:12px; color:var(--muted); margin-top:24px; font-weight:700}
@media(max-width:760px){.ba-footer .os-container{grid-template-columns:1fr}}

.ba-page-hero{padding:60px 0 24px; text-align:center}
.ba-page-hero h1{font-size:clamp(34px,5vw,56px); font-weight:900; margin:8px 0 12px; letter-spacing:-.03em}