@charset "UTF-8";
:root{--green:#1d6f50;--dark:#124832;--mint:#edf6f1;--cream:#f7f5ef;--ink:#17221d;--gray:#68756f;--line:#dce5df;--white:#fff;--shadow:0 16px 42px rgba(25,52,39,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Pretendard","Noto Sans KR","Malgun Gothic",sans-serif;color:var(--ink);line-height:1.7;background:#fff;letter-spacing:-.25px}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.skip-link{position:fixed;left:10px;top:-100px;background:#000;color:#fff;padding:10px;z-index:999}.skip-link:focus{top:10px}
.home-landing{display:none}.is-home .home-landing{display:block}.is-home .list-header{display:none}.home-latest-heading{display:none}.is-home .home-latest-heading{display:block;text-align:center;margin-bottom:38px}.home-latest-heading h2{font-size:35px;margin:0}.home-latest-heading p{color:var(--gray)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner,.section-inner,.footer-inner,.content-layout,.article-layout{width:min(1180px,calc(100% - 40px));margin:auto}.header-inner{height:76px;display:flex;align-items:center}.brand{display:flex;align-items:center;gap:11px;margin-right:auto}.brand-icon{width:42px;height:42px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:800}.brand-text strong{display:block;font-size:17px}.brand-text small{display:block;font-size:9px;color:#78837d;letter-spacing:1.2px}.main-menu{display:flex;gap:25px;font-size:14px;font-weight:650}.main-menu a:hover{color:var(--green)}.search-open,.mobile-menu-button{border:0;background:transparent;cursor:pointer}.search-open{font-size:24px;margin-left:22px}.mobile-menu-button{display:none;font-size:26px}.search-panel{display:none;padding:18px;border-top:1px solid var(--line);background:#fff}.search-panel.open{display:block}.search-panel>div{max-width:600px;margin:auto;display:flex}.search-panel input{flex:1;border:1px solid var(--line);border-radius:8px 0 0 8px;padding:13px}.search-panel button{border:0;background:var(--green);color:#fff;padding:0 22px;border-radius:0 8px 8px 0}
.hero{padding:88px 0 82px;background:linear-gradient(120deg,var(--cream),var(--mint));overflow:hidden}.hero-inner{width:min(1180px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1.12fr .88fr;gap:72px;align-items:center}.eyebrow{display:inline-block;color:var(--green);font-size:12px;font-weight:800;letter-spacing:1.5px;margin-bottom:13px}.hero h1{font-size:54px;line-height:1.18;letter-spacing:-2.5px;margin:0 0 24px}.hero h1 em{font-style:normal;color:var(--green)}.hero-copy>p{font-size:18px;color:var(--gray);max-width:600px;margin:0 0 30px}.hero-buttons{display:flex;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:49px;padding:0 23px;border-radius:8px;font-size:14px;font-weight:750}.btn-primary{background:var(--green);color:#fff}.btn-light{background:#fff;border:1px solid #cbd8d1}.hero-points{display:flex;gap:20px;margin-top:26px;font-size:13px;color:#506159}.formula-box{background:#fff;border-radius:22px;padding:27px;box-shadow:var(--shadow)}.formula-head{background:var(--dark);color:#fff;padding:28px;border-radius:15px}.formula-head small{display:block;opacity:.68;margin-bottom:8px}.formula-head strong{font-size:22px}.formula-head p{font-size:13px;opacity:.72;margin:8px 0 0}.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.quick-links a{display:flex;gap:13px;align-items:center;padding:18px;border:1px solid var(--line);border-radius:12px;transition:.2s}.quick-links a:hover{transform:translateY(-2px);border-color:var(--green)}.quick-links b{font-size:12px;color:var(--green)}.quick-links span{font-size:14px;font-weight:750;line-height:1.35}
.service-section,.calculator-section{padding:92px 0}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:35px}.section-title h2{font-size:35px;letter-spacing:-1.5px;margin:0}.section-title p{margin:0;color:var(--gray);font-size:14px}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.service-card{border:1px solid var(--line);border-radius:15px;padding:29px 26px;transition:.25s}.service-card:hover,.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}.card-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--mint);color:var(--green);font-size:22px}.service-card h3{font-size:20px;margin:19px 0 8px}.service-card p{font-size:14px;color:var(--gray);min-height:70px}.service-card b{font-size:13px;color:var(--green)}
.calculator-section{background:#f8faf8}.floor-section{background:#fff}.calculator-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px}.calc-form{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:27px;background:#fff;border:1px solid var(--line);border-radius:16px}.floor-section .calc-form{background:#f8faf8}.calc-form label{font-size:13px;font-weight:700}.calc-form input{display:block;width:100%;margin-top:7px;padding:13px;border:1px solid var(--line);border-radius:8px;font:inherit}.calc-form button{grid-column:1/-1;border:0;background:var(--green);color:#fff;border-radius:8px;padding:14px;font-weight:800;cursor:pointer}.calc-result{display:flex;flex-direction:column;justify-content:center;background:var(--dark);color:#fff;border-radius:16px;padding:35px}.calc-result span{font-size:12px;opacity:.7}.calc-result strong{font-size:42px;line-height:1.25;margin-top:8px}.calc-result b{font-size:22px;color:#a9dec4}.calc-result p{margin:14px 0 2px}.calc-result small{opacity:.65}
.knowhow{padding:92px 0;background:var(--dark);color:#fff}.knowhow-grid{display:grid;grid-template-columns:1fr 1fr;gap:85px;align-items:center}.eyebrow.light{color:#9bd0b7}.knowhow h2{font-size:40px;line-height:1.35;margin:0 0 18px}.knowhow p{color:rgba(255,255,255,.72);max-width:520px;margin-bottom:28px}.btn-white{background:#fff;color:var(--dark)}.calculation-card{padding:14px 30px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}.calculation-card div{padding:20px 0;border-bottom:1px solid rgba(255,255,255,.13)}.calculation-card div:last-child{border:0}.calculation-card span{display:block;font-size:12px;opacity:.62}.calculation-card strong{font-size:20px}
.content-layout{padding:75px 0 95px}.list-header{text-align:center;margin-bottom:42px}.list-header h1{font-size:40px;margin:0}.list-header p{color:var(--gray)}.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.post-card{border:1px solid var(--line);border-radius:15px;overflow:hidden;background:#fff;transition:.25s}.post-thumb{display:block;height:245px;background:linear-gradient(135deg,#9dae9f,#456f5c);position:relative;overflow:hidden}.post-thumb img{width:100%;height:100%;object-fit:cover}.thumb-placeholder{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.9);font-size:12px;letter-spacing:2px;font-weight:800}.post-card-body{padding:23px}.post-category{color:var(--green);font-size:12px;font-weight:750}.post-card h2{font-size:19px;line-height:1.45;margin:8px 0}.post-card p{font-size:13px;color:var(--gray);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-card time{font-size:11px;color:#89948e}.pagination{display:flex;justify-content:center;gap:20px;align-items:center;margin-top:50px}.pagination a{padding:8px 12px;border:1px solid var(--line);border-radius:7px}
.article-layout{padding:70px 0 100px;display:grid;grid-template-columns:minmax(0,820px) 280px;gap:60px;align-items:start}.single-column{display:block;max-width:850px}.article-header{padding-bottom:30px;border-bottom:1px solid var(--line);margin-bottom:35px}.article-category{color:var(--green);font-size:13px;font-weight:750}.article-header h1{font-size:42px;line-height:1.35;letter-spacing:-1.8px;margin:10px 0 15px}.article-meta{display:flex;gap:16px;color:#849089;font-size:12px}.article-body{font-size:17px;line-height:1.9;word-break:keep-all}.article-body p{margin:0 0 1.45em}.article-body h2{font-size:29px;margin:2.2em 0 .75em}.article-body h3{font-size:23px}.article-body a{color:var(--green);text-decoration:underline;text-underline-offset:3px}.article-body img{border-radius:12px}.article-body blockquote{border-left:5px solid var(--green);background:var(--mint);padding:20px 23px;margin:28px 0}.related,.comments{margin-top:60px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.related-grid a{border:1px solid var(--line);border-radius:10px;overflow:hidden}.related-grid img{width:100%;height:115px;object-fit:cover}.related-grid strong,.related-grid time{display:block;padding:8px 10px}.comment-item{padding:18px 0;border-bottom:1px solid var(--line)}.comment-head{display:flex;justify-content:space-between}.comment-head time,.comment-actions{font-size:11px;color:var(--gray)}.comment-form{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}.comment-form input,.comment-form textarea{border:1px solid var(--line);border-radius:8px;padding:12px;font:inherit}.comment-form textarea{grid-column:1/-1}.comment-form button{justify-self:end;grid-column:1/-1;border:0;background:var(--green);color:#fff;padding:11px 22px;border-radius:8px}.sidebar{position:sticky;top:100px}.sidebar-box{border:1px solid var(--line);border-radius:13px;padding:20px;margin-bottom:18px}.sidebar-box p,.sidebar-box li{font-size:13px;color:var(--gray)}.sidebar-box ul{list-style:none;padding:0}
.site-footer{background:var(--ink);color:#fff;padding:55px 0 20px}.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:55px}.footer-inner>div{display:flex;flex-direction:column;gap:8px}.footer-inner strong{font-size:20px}.footer-inner p,.footer-inner a{font-size:13px;color:#aab4af}.copyright{width:min(1180px,calc(100% - 40px));margin:40px auto 0;border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:11px;color:#89948e}
@media(max-width:900px){.main-menu{display:none;position:absolute;left:0;right:0;top:76px;background:#fff;padding:20px;flex-direction:column;border-bottom:1px solid var(--line)}.main-menu.open{display:flex}.mobile-menu-button{display:block;margin-right:10px}.search-open{margin-left:0}.hero-inner,.knowhow-grid,.calculator-grid{grid-template-columns:1fr}.hero-inner{gap:45px}.hero h1{font-size:43px}.service-grid,.list-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.sidebar{position:static}}
@media(max-width:600px){.header-inner,.section-inner,.footer-inner,.content-layout,.article-layout,.hero-inner,.copyright{width:calc(100% - 28px)}.header-inner{height:68px}.brand-icon{width:38px;height:38px}.brand-text strong{font-size:14px}.brand-text small{font-size:7px}.main-menu{top:68px}.hero{padding:55px 0}.hero h1{font-size:34px}.hero-copy>p{font-size:15px}.hero-buttons,.hero-points{flex-direction:column}.btn{width:100%}.hero-points{gap:6px}.quick-links,.service-grid,.list-grid,.knowhow-grid,.footer-inner,.related-grid,.calc-form{grid-template-columns:1fr}.service-section,.calculator-section,.knowhow{padding:66px 0}.section-title{display:block}.section-title h2{font-size:29px}.section-title p{margin-top:8px}.calc-form button{grid-column:1}.article-header h1{font-size:31px}.article-body{font-size:16px}.post-thumb{height:210px}.calc-result strong{font-size:35px}}