/* YK컴퍼니 줄눈시공 — 색은 아래 토큰만 바꾸면 전체가 바뀐다 */
:root{
  --ink:#13233d;--ink-deep:#0c1728;--text:#2a3a50;--muted:#667489;
  --accent:#1c5fc0;--accent-dark:#164b99;--accent-soft:#e5eefb;--sky:#9cc6ff;
  --cream:#f6f2ea;--sand:#ece6da;--gray:#f6f8fa;--yellow:#ffd92e;--yellow-dark:#f2c800;
  --line:rgba(19,35,61,.12);--shadow:0 24px 70px rgba(19,35,61,.10);
  --font:Pretendard,"Noto Sans KR","Apple SD Gothic Neo","Malgun Gothic",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px;-webkit-text-size-adjust:100%}
body{margin:0;overflow-x:clip;color:var(--text);background:#fff;font-family:var(--font);font-size:16px;line-height:1.7;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3{color:var(--ink);font-weight:800;letter-spacing:-.04em;text-wrap:balance}
a{color:inherit}
svg{display:block;width:100%;height:100%}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;padding:10px 14px;border-radius:10px;background:#fff}

.wrap{width:min(1200px,100%);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.wrap.wide{width:min(1380px,100%)}
.wrap.narrow{width:min(960px,100%)}
.sec{padding-block:clamp(64px,9vw,128px)}
.tint{background:linear-gradient(180deg,#f3f7fc 0,#fff 100%)}
.cream{background:var(--cream)}.sand{background:var(--sand)}.gray{background:var(--gray)}
.dark{background:var(--ink);color:#c9d3e0}
.dark h2,.dark h3{color:#fff}

.eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:18px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
.eyebrow::before{content:"";width:28px;height:2px;background:currentColor}
.dark .eyebrow,.final .eyebrow{color:var(--sky)}
.sec-head{max-width:760px;margin-bottom:clamp(32px,4.5vw,56px)}
.sec-head h2,.glance h2,.duo h2,.final h2{font-size:clamp(28px,4.2vw,50px);line-height:1.18}
.sec-head h2+p{margin-top:20px;color:var(--muted);font-size:clamp(16px,1.5vw,19px)}
.dark .sec-head h2+p{color:#b4c0d0}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}

/* 버튼 */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:0;border-radius:999px;font:inherit;font-size:15px;font-weight:800;text-decoration:none;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-yellow{color:var(--ink);background:var(--yellow);box-shadow:0 10px 24px rgba(242,200,0,.28)}
.btn-yellow:hover{background:var(--yellow-dark)}
.btn-ghost{color:#fff;background:rgba(255,255,255,.1);box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.28)}
.btn-lg{min-height:58px;padding:0 36px;border-radius:12px;font-size:17px}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.pill{display:inline-flex;align-items:center;min-height:42px;padding:0 18px;border:1.5px solid var(--accent);border-radius:999px;color:var(--accent-dark);font-size:14px;font-weight:800;text-decoration:none}
.pill:hover{background:var(--accent-soft)}
.more{display:inline-flex;margin-top:22px;color:var(--accent-dark);font-weight:800;text-decoration:none}
.more::after{content:"→";margin-left:8px}

/* 머리 */
.hd{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px;padding:0 clamp(16px,4.6vw,72px);border-bottom:1px solid rgba(19,35,61,.08);background:rgba(255,255,255,.94);backdrop-filter:blur(18px)}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo svg{width:36px;height:36px}
.logo b{font-size:19px;font-weight:800;letter-spacing:-.03em}
.logo small{padding-left:12px;border-left:1px solid var(--line);color:var(--muted);font-size:13px;font-weight:700}
.hd nav{display:flex;align-items:center;gap:clamp(16px,2.2vw,30px)}
.hd nav a{color:#44536a;font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.hd nav a:hover{color:var(--accent)}
.hd nav a.btn{color:var(--ink)}
.mnav{display:none;position:relative}
.mnav summary{display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--line);border-radius:50%;list-style:none;cursor:pointer}
.mnav summary::-webkit-details-marker{display:none}
.mnav summary i,.mnav summary i::before,.mnav summary i::after{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.mnav summary i{position:relative}
.mnav summary i::before,.mnav summary i::after{content:"";position:absolute;left:0}
.mnav summary i::before{top:-6px}.mnav summary i::after{top:6px}
.mnav div{position:absolute;right:0;top:56px;display:grid;width:min(280px,calc(100vw - 32px));padding:10px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.mnav div a{padding:13px 14px;border-radius:12px;color:var(--ink);font-weight:700;text-decoration:none}
.mnav div a:hover{background:var(--gray)}

/* 첫 화면 */
.hero{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);align-items:center;gap:clamp(24px,4vw,64px);padding:clamp(40px,5vw,72px) clamp(16px,5.4vw,78px) 118px;background:radial-gradient(900px 520px at 62% 0,#e9eef2 0,transparent 70%),var(--cream)}
.hero h1{font-size:clamp(38px,5.2vw,70px);line-height:1.1;letter-spacing:-.05em}
.bar{display:block;width:84px;height:6px;margin:30px 0 32px;background:var(--yellow)}
.hero-brand{color:var(--accent);font-size:clamp(24px,2.4vw,32px);font-weight:800;letter-spacing:-.03em}
.hero-sub{margin:14px 0 30px;color:#44536a;font-size:clamp(16px,1.4vw,18px);font-weight:600}
.hero-phone{margin-top:14px;color:var(--ink);font-size:14px;font-weight:700}
.hero-phone a{margin-left:8px;font-size:16px;font-weight:800;text-underline-offset:4px}
.mosaic{display:grid;grid-template-columns:repeat(12,1fr);grid-template-rows:clamp(200px,24vw,330px) clamp(150px,18vw,250px);gap:10px}
.mo{position:relative;overflow:hidden;border-radius:6px}
.mo-1{grid-column:1/8}.mo-2{grid-column:8/13}.mo-3{grid-column:1/6}.mo-4{grid-column:6/13}
.mo figcaption{position:absolute;right:12px;bottom:12px;display:flex;gap:9px;padding:7px 12px;color:#fff;background:rgba(12,23,40,.9);font-size:12px;font-weight:800}
.mo figcaption b{color:var(--sky)}
.strip{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);margin-top:-58px}
.strip a{display:flex;align-items:center;gap:16px;padding:26px 24px;border-block:1px solid var(--line);border-left:1px solid var(--line);background:#fff;text-decoration:none;box-shadow:var(--shadow)}
.strip a:first-child{border-radius:22px 0 0 22px}
.strip a:last-child{border-right:1px solid var(--line);border-radius:0 22px 22px 0}
.strip a:hover b{color:var(--accent)}
.num{flex:none;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;color:var(--accent-dark);background:var(--accent-soft);font-size:12px;font-weight:800}
.strip b{display:block;color:var(--ink);font-size:17px;letter-spacing:-.02em}
.strip small{display:block;color:var(--muted);font-size:13px;line-height:1.5}

/* 한눈에 보기 */
.glance{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;gap:clamp(24px,5vw,72px);margin-block:clamp(56px,8vw,112px);padding:clamp(28px,5vw,64px);border:1px solid var(--line);border-radius:30px;background:linear-gradient(120deg,#e9f1fc 0,#fbfaf6 46%,var(--cream) 100%)}
.glance p{margin-top:18px;color:var(--muted)}
.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.facts div{padding:24px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.86)}
.facts dt{margin-bottom:14px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.08em}
.facts dd{color:var(--ink);font-size:19px;font-weight:800;letter-spacing:-.03em;line-height:1.4}
.facts div:last-child:nth-child(odd){grid-column:1/-1}
.facts small{display:block;margin-top:10px;color:var(--muted);font-size:13px;font-weight:500;letter-spacing:0}

/* 카드 */
.cards3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{overflow:hidden;border:1px solid var(--line);border-radius:24px;background:#fff}
.card svg{aspect-ratio:16/9;height:auto}
.card div{padding:28px 28px 32px}
.tag{margin-bottom:12px;color:var(--accent);font-size:12px;font-weight:800}
.card h3{margin-bottom:12px;font-size:25px}
.card p:last-child{color:var(--muted);font-size:15px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.mini{padding:20px 22px;border:1px solid var(--line);border-radius:18px;background:#fdfcfa}
.mini b{display:block;margin-bottom:10px;color:var(--ink);font-size:15px}
.mini p,.mini li{color:var(--muted);font-size:14px;line-height:1.65}
.mini li{position:relative;padding-left:16px}
.mini li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.mini.big{padding:28px}
.mini.big span{display:block;margin-bottom:22px;color:var(--ink);font-size:13px;font-weight:800}
.mini.big b{font-size:21px;letter-spacing:-.03em}

/* 줄눈재 비교 */
.matrix{overflow:hidden;border:1px solid var(--line);border-radius:24px}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:20px 22px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{color:#fff;background:var(--ink);font-size:13px;letter-spacing:.02em}
tbody th{width:17%;color:var(--ink);font-size:16px}
tbody tr:last-child>*{border-bottom:0}
tbody tr:nth-child(even){background:var(--gray)}
.note{margin-top:18px;color:var(--muted);font-size:14px}

/* 색상 미리보기 */
.tool{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(20px,3vw,36px);align-items:start}
.tool-view{position:sticky;top:98px}
.tilegrid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:8px;aspect-ratio:4/3;border-radius:22px;background:var(--grout);transition:background .2s}
.tilegrid i{border-radius:2px;background:var(--tile);box-shadow:inset 0 0 0 1px rgba(0,0,0,.04);transition:background .2s}
.tool-cap{margin-top:18px}
.tool-cap b{display:block;color:#fff;font-size:18px}
.tool-cap span{color:#b4c0d0;font-size:15px}
.tool-pick{display:grid;gap:16px}
.tool-pick>div{padding:24px;border:1px solid rgba(255,255,255,.14);border-radius:22px;background:rgba(255,255,255,.05)}
.tool-pick h3{margin-bottom:14px;font-size:16px;letter-spacing:-.02em}
.swatches{display:flex;flex-wrap:wrap;gap:8px}
.swatch{display:inline-flex;align-items:center;gap:9px;min-height:44px;padding:0 16px 0 10px;border:0;border-radius:999px;color:#fff;background:rgba(255,255,255,.1);font:inherit;font-size:14px;font-weight:700;cursor:pointer}
.swatch i{width:24px;height:24px;border-radius:50%;box-shadow:0 0 0 2px rgba(255,255,255,.5)}
.swatch[aria-pressed="true"]{color:var(--ink);background:#fff}
.memo p{color:#b4c0d0;font-size:14px}
.memo fieldset{margin:18px 0 0;padding:0;border:0;display:flex;flex-wrap:wrap;gap:8px}
.memo legend{margin-bottom:10px;padding:0;color:var(--sky);font-size:12px;font-weight:800}
.memo label{position:relative;cursor:pointer}
.memo input{position:absolute;inset:0;opacity:0;cursor:pointer}
.memo label span{display:inline-flex;align-items:center;min-height:42px;padding:0 16px;border-radius:999px;color:#fff;background:rgba(255,255,255,.1);font-size:14px;font-weight:700}
.memo input:checked+span{color:var(--ink);background:var(--yellow)}
.memo input:focus-visible+span{outline:3px solid var(--sky);outline-offset:2px}
.memo .memo-out{margin-top:18px;padding:16px 18px;border-radius:14px;color:#fff;background:rgba(0,0,0,.28);font-size:15px}
.memo-act{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}

/* 한계 안내 */
.limits{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:clamp(20px,4vw,56px);margin-block:clamp(48px,7vw,96px);padding:clamp(24px,4vw,44px);border:1px solid var(--line);border-radius:28px;background:#f9fafb}
.limits h3{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
.limits .mini{background:#fff}

/* 상황별 카드 */
.split{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);overflow:hidden;margin-bottom:26px;border-radius:30px;background:#fff;box-shadow:0 18px 50px rgba(19,35,61,.07)}
.split:last-child{margin-bottom:0}
.split.flip figure{order:2}
.split figure{position:relative;min-height:420px}
.split figure svg{position:absolute;inset:0}
.split figure svg.wide{display:none}
.split figcaption{position:absolute;left:26px;bottom:22px;padding:7px 12px;color:#fff;background:rgba(12,23,40,.9);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.split-body{padding:clamp(28px,5vw,72px)}
.split-body h3{font-size:clamp(26px,3.3vw,44px);line-height:1.2}
.split-body>p{margin:20px 0 28px;color:var(--muted)}
.inkbox{margin:14px 0 20px;padding:22px 24px;border-radius:18px;color:#c9d3e0;background:var(--ink)}
.inkbox small{display:block;color:var(--sky);font-size:12px;font-weight:800}
.inkbox b{display:block;margin:6px 0 8px;color:#fff;font-size:19px;letter-spacing:-.02em}
.inkbox p{font-size:13px;line-height:1.65}
.pills{display:flex;flex-wrap:wrap;gap:10px}

/* 기준·순서 */
.duo{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;gap:clamp(24px,5vw,72px)}
.duo>div>p{margin-top:20px;color:var(--muted)}
.cream .mini{background:#fff}
.split.flip{grid-template-columns:minmax(0,1.14fr) minmax(0,.86fr)}
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.steps li{position:relative;padding:26px 24px 30px;border:1px solid var(--line);border-radius:22px;background:#fbfaf7}
.steps li:not(:last-child)::after{content:"→";position:absolute;right:-15px;top:50%;z-index:1;display:grid;place-items:center;width:28px;height:28px;border:1px solid var(--line);border-radius:50%;color:var(--accent);background:#fff;font-size:13px;font-weight:800;line-height:1}
.big-no{display:block;margin-bottom:34px;color:#e3d9c6;font-size:36px;font-weight:800;line-height:1}
.steps small{display:block;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.steps b{display:block;margin:6px 0 8px;color:var(--ink);font-size:19px;letter-spacing:-.03em}
.steps p{color:var(--muted);font-size:14px;line-height:1.65}
.order{margin-top:22px;padding:26px 28px;border-radius:22px;color:#c9d3e0;background:var(--ink)}
.order>b{display:block;margin-bottom:14px;color:var(--sky);font-size:13px}
.order ol{display:flex;flex-wrap:wrap;gap:10px 30px;margin-bottom:14px}
.order li{position:relative;padding:8px 16px;border-radius:999px;color:#fff;background:rgba(255,255,255,.1);font-size:14px;font-weight:700}
.order li.on{color:var(--ink);background:var(--yellow)}
.order li:not(:last-child)::after{content:"→";position:absolute;right:-22px;color:var(--sky)}
.order p{font-size:14px}

/* 자주 묻는 질문 */
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 0;list-style:none;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;color:var(--accent);font-size:28px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq h3{font-size:clamp(17px,1.6vw,20px);font-weight:700;letter-spacing:-.02em;line-height:1.5}
.faq details p{max-width:760px;padding-bottom:30px;color:var(--muted)}

/* 마지막 상담 */
.final{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:center;gap:clamp(24px,5vw,72px);margin-block:clamp(56px,8vw,110px);padding:clamp(30px,6.4vw,92px);border-radius:32px;color:#c9d3e0;background:radial-gradient(700px 420px at 100% 0,#1f4f8f 0,transparent 70%),var(--ink);box-shadow:0 30px 80px rgba(19,35,61,.22)}
.final h2{color:#fff}
.final>div>p{margin-top:22px;font-size:clamp(16px,1.5vw,19px)}
.final-card{display:grid;gap:12px;padding:30px;border:1px solid rgba(255,255,255,.18);border-radius:24px;background:rgba(255,255,255,.07)}
.chips{display:flex;flex-wrap:wrap;gap:8px 16px;margin-bottom:8px}
.chips li{display:flex;align-items:center;gap:8px;color:#fff;font-size:14px;font-weight:700}
.chips i{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;color:#fff;background:var(--accent);font-size:11px;font-style:normal;font-weight:800}
.prep li{position:relative;padding:10px 0 10px 22px;border-top:1px solid rgba(255,255,255,.14);color:#e3e9f1;font-size:15px}
.prep li::before{content:"";position:absolute;left:2px;top:1.2em;width:8px;height:8px;border-radius:50%;background:var(--yellow)}
.final-phone{color:#fff;font-size:22px;font-weight:800;text-align:center;letter-spacing:-.01em}

/* 바닥·고정 버튼 */
.ft{padding:56px 0 44px;color:#aab6c6;background:#0e1a2e;font-size:14px}
.ft .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:28px}
.ft b{display:block;margin-bottom:8px;color:#fff;font-size:19px}
.ft nav{display:flex;flex-wrap:wrap;gap:8px 20px;align-content:start}
.ft nav a{color:#dbe3ee;font-weight:700;text-decoration:none}
.ft small{grid-column:1/-1;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px}
.float{position:fixed;right:22px;bottom:28px;z-index:40;display:grid;gap:10px}
.float a{box-shadow:0 12px 30px rgba(19,35,61,.25)}
.float .btn-ghost{background:var(--ink);box-shadow:0 0 0 1.5px rgba(255,255,255,.35),0 12px 30px rgba(19,35,61,.25)}
.dock{display:none}

@media (max-width:1080px){
  .hd nav{display:none}.mnav{display:block}
  .hd .hd-cta{margin-left:auto}
  .cards3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .steps li::after{display:none!important}
}
@media (max-width:900px){
  .hero,.glance,.tool,.limits,.split,.split.flip,.duo,.final,.ft .wrap{grid-template-columns:minmax(0,1fr)}
  .hero{padding-bottom:28px}
  .strip{grid-template-columns:minmax(0,1fr);margin-top:0;padding-top:16px}
  .strip a,.strip a:first-child,.strip a:last-child{border:1px solid var(--line);border-bottom:0;border-radius:0;box-shadow:none}
  .strip a:first-child{border-radius:22px 22px 0 0}
  .strip a:last-child{border-bottom:1px solid var(--line);border-radius:0 0 22px 22px}
  .tool-view{position:static}
  .split.flip figure{order:0}
  .split figure{min-height:0}
  .split figure svg.tall{display:none}
  .split figure svg.wide{display:block;position:static;aspect-ratio:4/3;height:auto}
  .float{display:none}
  .has-dock{padding-bottom:76px}
  .dock{position:fixed;inset:auto 0 0;z-index:40;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:rgba(255,255,255,.96);backdrop-filter:blur(14px)}
  .dock .btn-ghost{color:#fff;background:var(--ink);box-shadow:none}
}
@media (max-width:640px){
  .logo small{display:none}
  .cards3,.grid2,.facts,.steps{grid-template-columns:minmax(0,1fr)}
  .card div{padding:24px 22px 26px}
  .big-no{margin-bottom:18px}
  .matrix{border:0;border-radius:0;overflow:visible}
  thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  tbody tr{display:block;margin-bottom:14px;padding:22px;border:1px solid var(--line);border-radius:22px;background:#fff!important}
  tbody th,tbody td{display:block;width:auto;padding:0;border:0}
  tbody th{margin-bottom:14px;font-size:20px}
  tbody td{margin-top:12px;color:var(--muted)}
  tbody td::before{content:attr(data-label);display:block;color:var(--accent);font-size:12px;font-weight:800}
  .order ol{gap:10px 28px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}