/* drain.kimseonggeun.com — 디자인 참고: partremodeling.jibsarepair.com (구조/레이아웃/폰트만 차용, 색상·텍스트·이미지 미차용)
   사조: Swiss/Editorial + Flat. 모노크롬 슬레이트 + 딥블루 단일 액센트, 그라디언트/글래스/과잉 그림자 없음. */

:root{
  --bg:#F5F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAEFF1;
  --ink:#171B1D;
  --ink-soft:#4E5A60;
  --ink-faint:#89969C;
  --line:#DCE3E6;
  --line-alt:#C2CCD1;
  --accent:#1B4A63;
  --accent-dark:#0F3346;
  --accent-soft:#E4EDF1;
  --accent-2:#6B5B3E;
  --panel:#12181A;
  --panel-2:#1C2427;
  --panel-text:#F2F5F6;
  --panel-text-muted:#9DA8AE;

  --radius:3px;
  --radius-pill:999px;

  --maxw:1280px;
  --maxw-wide:1440px;
  --gutter:clamp(20px,4vw,48px);
  --section-pad:clamp(56px,8vw,104px);
  --ease:cubic-bezier(.22,1,.36,1);

  --font:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,'Malgun Gothic',sans-serif;
  --tracking-tight:-0.015em;
  --tracking-caps:0.12em;
}
@font-face{
  font-family:'Pretendard Variable';
  src:url('https://cdn.jsdelivr.net/npm/pretendard@1.3.9/dist/web/variable/woff2/PretendardVariable.woff2') format('woff2-variations');
  font-weight:45 920; font-display:swap;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-weight:400;color:var(--ink);background:var(--bg);line-height:1.7;letter-spacing:-0.008em;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:var(--tracking-tight);word-break:keep-all;overflow-wrap:anywhere}
p{margin:0}
table{border-collapse:collapse}

.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.sec{padding:var(--section-pad) 0}
.sec-alt{background:var(--surface-2)}
.sec-dark{background:var(--panel);color:var(--panel-text)}
.sec-invert{background:var(--surface);color:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-invert .sec-desc{color:var(--ink-soft)}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:var(--tracking-caps);color:var(--accent);text-transform:uppercase;margin-bottom:12px}
.sec-dark .eyebrow{color:#8FB4C9}
.eyebrow.eyebrow-dash{padding-left:40px;position:relative}
.eyebrow.eyebrow-dash::before{content:'';position:absolute;left:0;top:50%;width:28px;height:1px;background:currentColor}
.sec-title{font-size:clamp(1.6rem,3.6vw,2.6rem);line-height:1.25;margin-bottom:14px}
.sec-desc{color:var(--ink-soft);font-size:1rem;max-width:620px;line-height:1.75}
.sec-dark .sec-desc{color:var(--panel-text-muted)}

.sec-marker{display:flex;flex-wrap:wrap;gap:clamp(18px,3.5vw,48px);align-items:flex-start;padding-bottom:28px;margin-bottom:32px;border-bottom:1px solid var(--line)}
.sec-dark .sec-marker,.sec-invert .sec-marker{border-color:rgba(128,128,128,.28)}
.sec-marker-num{flex:none}
.sec-marker-num .num{display:block;font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;letter-spacing:var(--tracking-tight);line-height:1;color:var(--ink-faint)}
.sec-dark .sec-marker-num .num{color:var(--panel-text-muted)}
.sec-marker-num .label{display:block;font-size:.7rem;font-weight:700;letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--accent);margin-top:6px}
.sec-marker-body{flex:1 1 320px;padding-top:2px}
.sec-marker-body .sec-title{margin-bottom:8px}

.divided-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.sec-dark .divided-grid,.sec-invert .divided-grid{border-color:rgba(128,128,128,.28)}
.divided-col{padding:clamp(22px,3vw,32px);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-dark .divided-col,.sec-invert .divided-col{border-color:rgba(128,128,128,.28)}
.divided-col .counter{display:block;font-size:.76rem;color:var(--ink-faint);margin-bottom:14px;font-weight:600}
.sec-dark .divided-col .counter{color:var(--panel-text-muted)}
.divided-col h3{font-size:1.15rem;font-weight:800;position:relative;padding-bottom:12px;margin-bottom:8px}
.divided-col h3::after{content:'';position:absolute;left:0;bottom:0;width:22px;height:2px;background:var(--accent)}
.divided-col p{font-size:.9rem;color:var(--ink-soft)}
.sec-dark .divided-col p,.sec-invert .divided-col p{color:inherit;opacity:.72}

.hdr{position:fixed;top:0;left:0;right:0;z-index:50;background:linear-gradient(180deg,rgba(8,10,8,.5) 0%,rgba(8,10,8,0) 100%);transition:background .3s var(--ease)}
.hdr.hdr--solid{background:var(--bg);border-bottom:1px solid var(--line)}
.hdr-inner{max-width:var(--maxw-wide);margin:0 auto;padding:1.3rem var(--gutter);display:flex;align-items:center;justify-content:space-between;gap:20px}
.hdr-logo span{font-size:1.08rem;font-weight:800;letter-spacing:var(--tracking-tight);color:#fff}
.hdr-logo b{color:#fff}
.hdr-nav{display:flex;gap:26px;font-size:.9rem;font-weight:600;color:#fff}
.hdr-nav a{transition:opacity .2s var(--ease)}
.hdr-nav a:hover{opacity:.65}
.hdr-cta{display:inline-block;padding:.65rem 1.2rem;border-radius:var(--radius);background:transparent;color:#fff;font-weight:700;font-size:.88rem;border:1px solid #fff;transition:background .25s var(--ease),color .25s var(--ease)}
.hdr-cta:hover{background:#fff;color:var(--ink)}
.hdr-burger{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:none;border:0;cursor:pointer;padding:6px;min-width:44px;min-height:44px}
.hdr-burger span{width:22px;height:2px;background:#fff}
.hdr.hdr--solid .hdr-logo span,.hdr.hdr--solid .hdr-logo b,.hdr.hdr--solid .hdr-nav,.hdr.hdr--solid .hdr-burger span{color:var(--ink)}
.hdr.hdr--solid .hdr-cta{background:var(--accent);color:#fff;border-color:var(--accent)}
.hdr.hdr--solid .hdr-cta:hover{background:var(--accent-dark);color:#fff;border-color:var(--accent-dark)}
#mob-nav{position:fixed;inset:0;background:var(--panel);color:var(--panel-text);z-index:100;display:none;flex-direction:column;padding:80px 32px 32px;gap:20px;font-size:1.15rem;font-weight:700}
#mob-nav.active{display:flex}
#mob-nav a{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:16px}
#mob-nav-close{position:absolute;top:24px;right:28px;font-size:2rem;cursor:pointer;color:#fff;line-height:1}

.crumb{font-size:.78rem;font-weight:600;letter-spacing:.01em;color:var(--ink-faint);padding:96px 0 18px;display:flex;align-items:center;gap:8px}
.crumb a{color:var(--ink-faint);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb-sep{width:5px;height:5px;border-top:1.5px solid var(--ink-faint);border-right:1.5px solid var(--ink-faint);transform:rotate(45deg);flex:none}
.crumb-current{color:var(--ink);font-weight:700}

.compare-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compare-item{position:relative;overflow:hidden;border:1px solid var(--line)}
.compare-item img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.compare-tag{position:absolute;top:12px;left:12px;padding:.3rem .75rem;background:var(--panel);color:#fff;font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.compare-item.after .compare-tag{background:var(--accent)}
.compare-cap{margin-top:10px;font-size:.84rem;color:var(--ink-faint)}
@media (max-width:640px){.compare-pair{grid-template-columns:1fr}}

.hero{position:relative;min-height:70vh;display:flex;align-items:flex-end;overflow:hidden;color:#fff;background:var(--panel)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,8,.05) 0%,rgba(10,10,8,.22) 55%,rgba(10,10,8,.66) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw-wide);margin:0 auto;padding:0 var(--gutter) 56px;width:100%}
.hero-eyebrow{display:inline-block;padding:.35rem .85rem;border:1px solid rgba(255,255,255,.4);border-radius:var(--radius);font-size:.78rem;font-weight:700;letter-spacing:var(--tracking-caps);margin-bottom:18px}
.hero h1{font-size:clamp(2.2rem,5.5vw,3.6rem);font-weight:800;letter-spacing:-0.01em;line-height:1.15;margin-bottom:18px;max-width:100%}
.hero-sub{font-size:1rem;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:26px;line-height:1.7}

.hero-split{position:relative;height:100vh;min-height:560px;overflow:hidden;background:var(--panel);color:#fff}
.hero-split-media{position:absolute;inset:0}
.hero-split::after{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,10,8,.78) 0%,rgba(8,10,8,.5) 45%,rgba(8,10,8,.32) 100%);z-index:1}
.hero-split-text{position:relative;z-index:2;height:100%;max-width:var(--maxw-wide);margin:0 auto;padding:clamp(76px,8vw,96px) var(--gutter) 32px;display:flex;flex-direction:column;justify-content:center;gap:10px;width:min(920px,94vw)}
.hero-split-text .hero-eyebrow{align-self:flex-start;margin-bottom:0}
.hero-split-text h1{font-size:clamp(2.2rem,6vw,5rem);font-weight:900;line-height:1.08;letter-spacing:-0.02em;margin-bottom:10px}
.hero-split-text .hero-sub{color:rgba(255,255,255,.85);max-width:520px;margin-bottom:0}
.hero-split-text .btn-row{margin-top:10px}
.hero-marquee-track{display:flex;height:100%;width:max-content;animation:heroMarqueeScroll 60s linear infinite}
.hero-marquee-track img{height:100%;width:auto;flex:none;object-fit:cover}
@keyframes heroMarqueeScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (max-width:860px){
  .hero-split{height:100vh;min-height:480px}
  .hero-split-text{width:100%;padding:96px var(--gutter) 32px}
}

.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:.95rem 1.5rem;min-height:50px;line-height:calc(50px - 1.9rem);border-radius:var(--radius);font-weight:700;font-size:.92rem;border:1px solid transparent;transition:.25s var(--ease)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.btn-outline{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{background:#fff;color:var(--ink)}
.sec:not(.sec-dark) .btn-outline{border-color:var(--line-alt);color:var(--ink)}
.sec:not(.sec-dark) .btn-outline:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

.grid{display:grid;gap:1px;background:var(--line)}
.sec-dark .grid,.sec-invert .grid{background:rgba(128,128,128,.28)}
.grid > *{background:var(--surface)}
.sec-dark .grid > *{background:var(--panel)}
.sec-alt .grid > *{background:var(--surface-2)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-cta{grid-template-columns:2fr 1fr;background:transparent;gap:20px}
.grid-cta > *{background:transparent}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:0;padding:clamp(22px,3vw,34px);transition:border-color .25s var(--ease)}
.card:hover{border-color:var(--accent)}
.card h3{font-size:1.02rem;font-weight:800;margin-bottom:8px}
.card p{color:var(--ink-soft);font-size:.9rem}

.link-card{display:block;border-radius:0;overflow:hidden;background:var(--surface);border:1px solid var(--line);transition:border-color .25s var(--ease)}
.link-card:hover{border-color:var(--accent)}
.link-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.link-card .lc-body{padding:16px 18px;min-height:92px;overflow:hidden;border-top:1px solid var(--line)}
.link-card .lc-body h4{font-size:.96rem;font-weight:800;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.link-card .lc-body span{font-size:.8rem;color:var(--ink-faint);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.link-card.lc-cta{display:flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;text-align:center;padding:24px;border-color:var(--accent)}
.link-card.lc-cta h4{font-size:1.02rem;color:#fff;font-weight:800}
.link-card.lc-cta:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.link-card.lc-cta-full{grid-column:1/-1}

.marquee{overflow:hidden;width:100%;-webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent)}
.marquee-track{display:flex;gap:1px;width:max-content;animation:marqueeScroll 40s linear infinite}
.marquee-track img{height:220px;width:auto;flex:none;object-fit:cover}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marqueeScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

.steps{display:flex;flex-direction:column;gap:0}
.step{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.sec-dark .step,.sec-invert .step{border-color:rgba(128,128,128,.28)}
.step:last-child{border-bottom:0}
.step-num{flex:none;width:40px;height:40px;border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.92rem}
.sec-dark .step-num{background:rgba(143,180,201,.16);color:#8FB4C9}
.step h4{font-size:1rem;font-weight:800;margin-bottom:6px}
.step p{color:var(--ink-soft);font-size:.9rem}
.sec-dark .step p,.sec-invert .step p{color:inherit;opacity:.72}

.checklist{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:.94rem;color:var(--ink-soft)}
.checklist li::before{content:'';flex:none;width:14px;height:14px;margin-top:4px;border-radius:2px;background:var(--accent)}

.faq-item{border-bottom:1px solid var(--line);padding:4px 0}
.faq-item summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;padding:15px 4px;font-weight:700;font-size:.98rem;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.3rem;color:var(--accent);transition:transform .25s var(--ease);flex:none;margin-left:12px}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 4px 18px;color:var(--ink-soft);font-size:.93rem;line-height:1.75}
.sec-dark .faq-item{border-color:var(--panel-2)}
.sec-dark .faq-item .faq-a{color:var(--panel-text-muted)}
.sec-invert .faq-item{border-color:rgba(10,10,10,.15)}
.sec-invert .faq-item .faq-a{color:var(--ink-soft)}

table.cmp{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line)}
table.cmp th,table.cmp td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left;font-size:.9rem}
table.cmp th{background:var(--surface-2);font-weight:700}

.trust-band{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-item{flex:1 1 200px;padding:20px var(--gutter);border-right:1px solid var(--line);position:relative}
.trust-item:last-child{border-right:0}
.trust-item h4{font-size:.96rem;font-weight:800;margin-bottom:8px;display:inline-block;position:relative}
.trust-item h4::after{content:'';position:absolute;left:0;bottom:-6px;width:28px;height:2px;background:var(--accent)}
.trust-item p{font-size:.84rem;color:var(--ink-soft);margin-top:8px}

.consult-card{border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0;padding:24px;background:var(--surface);transition:background .25s var(--ease),color .25s var(--ease)}
.consult-card:hover{background:var(--accent);color:#fff}
.consult-card:hover .consult-hint{color:rgba(255,255,255,.8)}
.consult-card .consult-label{font-size:.8rem;font-weight:700;letter-spacing:.04em;color:var(--accent);margin-bottom:8px}
.consult-card:hover .consult-label{color:#fff}
.consult-card .consult-value{font-size:1.25rem;font-weight:800;margin-bottom:6px}
.consult-hint{font-size:.85rem;color:var(--ink-soft)}
.consult-icon{width:40px;height:40px;border-radius:var(--radius-pill);display:flex;align-items:center;justify-content:center;margin-bottom:12px;background:var(--accent);transition:background .25s var(--ease)}
.consult-icon::before{content:''}
.consult-card.sms{border-left-color:var(--accent-2)}
.consult-card.sms .consult-label{color:var(--accent-2)}
.consult-card.sms .consult-icon{background:var(--accent-2)}
.consult-card.sms:hover{background:var(--accent-2)}
.consult-card.phone .consult-icon::before{width:15px;height:15px;border-radius:50%;border:3px solid #fff;box-sizing:border-box}
.consult-card.sms .consult-icon::before{width:17px;height:3px;border-radius:2px;background:#fff;box-shadow:0 6px 0 #fff,0 -6px 0 #fff}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important}}

.ftr{background:var(--panel);color:var(--panel-text);padding-top:clamp(48px,7vw,88px)}
.ftr-grid{display:grid;grid-template-columns:1.3fr .8fr 1.3fr;gap:clamp(28px,4vw,56px);padding-bottom:40px;border-bottom:1px solid var(--panel-2)}
.ftr h5{font-size:.8rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--panel-text-muted);margin-bottom:16px}
.ftr-biz p{font-size:.88rem;line-height:1.9;color:var(--panel-text-muted)}
.ftr-links,.ftr-cats{display:flex;flex-direction:column;gap:10px}
.ftr-links a,.ftr-cats a{font-size:.9rem;color:var(--panel-text);transition:color .2s var(--ease)}
.ftr-links a:hover,.ftr-cats a:hover{color:#8FB4C9}
.ftr-bottom{padding:18px var(--gutter);font-size:.78rem;color:var(--panel-text-muted);max-width:var(--maxw);margin:0 auto}
@media (max-width:760px){.ftr-grid{grid-template-columns:1fr;gap:32px}}

#mob-bar{position:fixed;bottom:0;left:0;right:0;z-index:40;display:none;background:var(--surface);border-top:1px solid var(--line);transform:translateY(100%);transition:transform .25s var(--ease)}
#mob-bar.show{transform:translateY(0)}
#mob-bar a{flex:1;text-align:center;padding:14px 0;font-weight:700;font-size:.9rem}
#mob-bar .mb-call{background:var(--accent);color:#fff}
#mob-bar .mb-text{color:var(--ink)}
#float-cta{position:fixed;right:24px;bottom:24px;z-index:40}
#float-cta a{display:block;padding:.9rem 1.4rem;border-radius:var(--radius-pill);background:var(--accent);color:#fff;font-weight:700;font-size:.88rem}

@media (max-width:900px){
  .hdr-nav{display:none}
  .hdr-burger{display:flex}
  .grid-3,.grid-5{grid-template-columns:repeat(2,1fr)}
  .divided-grid{grid-template-columns:1fr}
  .grid-cta{grid-template-columns:1fr}
  #mob-bar{display:flex}
  #float-cta{display:none}
}
@media (max-width:600px){
  .grid-2,.grid-3,.grid-5{grid-template-columns:1fr}
}