/* ===== 트러스하우스 · B(고급 에디토리얼) 멀티페이지 공유 스타일 ===== */
:root{
  --ink:#16181a; --ink-soft:#33373b; --paper:#f4f1ea; --paper-pure:#fbfaf6;
  --gray:#8d8a82; --line:#d9d4c8; --line-dk:#3a3d40; --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Pretendard',system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
.serif{font-family:'Noto Serif KR',serif}
.display{font-family:'Cormorant Garamond','Noto Serif KR',serif}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
::selection{background:var(--ink);color:var(--paper)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}

/* photos — grayscale → color on hover */
.ph{overflow:hidden;background:#e7e3da;position:relative}
.ph img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.04) brightness(.98);transition:filter .7s ease,transform 1.2s ease}
.ph:hover img{filter:grayscale(0) contrast(1);transform:scale(1.03)}
.ph .cap{position:absolute;left:14px;bottom:12px;z-index:2;font-family:'Cormorant Garamond',serif;font-size:12px;letter-spacing:.12em;color:#fff;background:rgba(22,24,26,.6);padding:5px 10px;backdrop-filter:blur(3px)}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(244,241,234,.9);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.hd-in{max-width:var(--max);margin:0 auto;padding:18px 32px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;flex-direction:column}
.logo .nm{font-family:'Cormorant Garamond',serif;font-weight:600;font-size:22px;letter-spacing:.16em}
.logo .en{font-size:9px;letter-spacing:.34em;color:var(--gray);margin-top:1px;font-weight:500}
.gnb{display:flex;align-items:center;gap:30px;font-size:14px;color:var(--ink-soft)}
.gnb a:hover{color:var(--ink)}.gnb a.active{color:var(--ink);font-weight:600}
.gnb .cta{border:1px solid var(--ink);padding:9px 18px;font-size:13px;transition:.2s}
.gnb .cta:hover{background:var(--ink);color:var(--paper)}
.menu-btn{display:none;background:none;border:0;font-size:22px;cursor:pointer}

/* page hero (light editorial) */
.phero{padding:120px 0 70px;border-bottom:1px solid var(--line)}
.phero .crumb{font-family:'Cormorant Garamond',serif;font-size:13px;letter-spacing:.18em;color:var(--gray);margin-bottom:18px}
.phero .eyebrow{font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--gray)}
.phero h1{font-family:'Noto Serif KR',serif;font-weight:500;font-size:clamp(34px,4.6vw,56px);line-height:1.24;letter-spacing:-.025em;margin:18px 0 20px}
.phero p{font-size:18px;color:var(--ink-soft);max-width:60ch;line-height:1.85}

/* section */
.sec{padding:120px 0}
.sec.alt{background:var(--paper-pure);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec.dark{background:var(--ink);color:var(--paper)}
.sec.dark .sec-num{color:#9a9890}.sec.dark .sec-num::before{background:#6a6862}
.sec.dark .head{color:var(--paper-pure)}.sec.dark .lead{color:#c9c6bd}
.sec-num{font-family:'Cormorant Garamond',serif;font-size:13px;letter-spacing:.32em;text-transform:uppercase;color:var(--gray);display:flex;align-items:center;gap:14px;margin-bottom:36px}
.sec-num::before{content:"";width:34px;height:1px;background:var(--gray)}
.head{font-family:'Noto Serif KR',serif;font-weight:500;font-size:clamp(28px,3.6vw,44px);line-height:1.32;letter-spacing:-.02em;margin-bottom:24px}
.lead{font-size:18px;line-height:1.9;color:var(--ink-soft);max-width:62ch}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px}
.sec-head .sec-num{justify-content:center}

/* grids */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}

/* entry / app cards */
.ecard{display:block}
.ecard .ph{aspect-ratio:4/3;margin-bottom:16px}
.ecard h3{font-family:'Noto Serif KR',serif;font-size:21px;font-weight:500;margin-bottom:8px}
.ecard p{font-size:14.5px;color:var(--ink-soft);line-height:1.75}

/* feature list (tech) */
.tech-item{display:grid;grid-template-columns:80px 1fr 1.3fr;gap:36px;padding:36px 0;border-bottom:1px solid var(--line);align-items:start}
.tech-item:first-of-type{border-top:1px solid var(--line)}
.tech-item .tnum{font-family:'Cormorant Garamond',serif;font-size:24px;color:var(--gray)}
.tech-item .ten{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--gray);margin-bottom:8px}
.tech-item .tko{font-family:'Noto Serif KR',serif;font-size:21px;font-weight:500}
.tech-item .tdesc{color:var(--ink-soft);font-size:15.5px;line-height:1.85}

/* data figures */
.datarow{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}
.datarow div{padding:40px 32px;border-right:1px solid var(--line)}
.datarow div:last-child{border-right:0}
.datarow .n{font-family:'Cormorant Garamond',serif;font-size:clamp(38px,5vw,56px);line-height:1}
.datarow .n em{font-style:normal;font-size:.42em;color:var(--gray)}
.datarow .l{margin-top:12px;font-size:14px;color:var(--ink-soft)}

/* spec table */
.spec{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line)}
.spec th{background:var(--ink);color:var(--paper);text-align:left;font-weight:500;padding:14px 18px;font-size:13px;letter-spacing:.06em}
.spec td{padding:16px 18px;border-bottom:1px solid var(--line);vertical-align:top;background:var(--paper-pure)}
.spec tr:last-child td{border-bottom:0}
.spec td.k{font-family:'Noto Serif KR',serif;font-weight:500;width:200px}
.spec .ok{color:var(--ink);font-weight:600;font-size:13px;border-bottom:2px solid var(--gray)}

/* cert */
.cert{background:var(--paper-pure);border:1px solid var(--line);padding:26px;display:flex;flex-direction:column;gap:12px}
.cert .badge{width:46px;height:46px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:20px}
.cert h4{font-family:'Noto Serif KR',serif;font-size:17px;font-weight:500}
.cert p{font-size:14px;color:var(--ink-soft);line-height:1.6}
.cert .stat{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);align-self:flex-start;border-top:1px solid var(--line);padding-top:8px}

/* benefits grid */
.ben-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.ben-cell{background:var(--paper-pure);padding:40px 32px;min-height:220px;display:flex;flex-direction:column}
.ben-cell .q{font-family:'Noto Serif KR',serif;font-size:20px;font-weight:500;margin-bottom:14px}
.ben-cell .a{color:var(--ink-soft);font-size:15px;line-height:1.8;flex:1}
.ben-cell .tag{margin-top:18px;font-size:12px;letter-spacing:.1em;color:var(--gray);text-transform:uppercase}

/* case rows */
.caserow{display:grid;grid-template-columns:1.1fr 1fr;border:1px solid var(--line);margin-bottom:20px;background:var(--paper-pure)}
.caserow .ph{aspect-ratio:16/10}
.caserow .info{padding:32px 34px;display:flex;flex-direction:column;justify-content:center}
.caserow .tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tagchip{font-family:'Cormorant Garamond',serif;font-size:12px;letter-spacing:.08em;color:var(--gray);border:1px solid var(--line);padding:4px 11px}
.caserow h3{font-family:'Noto Serif KR',serif;font-size:23px;font-weight:500;margin-bottom:12px}
.caserow .meta{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;font-size:14px;color:var(--ink-soft);margin-bottom:12px}
.caserow .meta b{color:var(--ink);font-weight:600}
.caserow .res{font-size:14px;color:var(--ink);font-weight:500;border-top:1px solid var(--line);padding-top:12px}

/* video */
.vid{position:relative;aspect-ratio:16/9;overflow:hidden;background:#000;border:1px solid var(--line)}
.vid iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* academy */
.catbar{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.catbar a{font-family:'Cormorant Garamond',serif;font-size:14px;letter-spacing:.08em;color:var(--ink-soft);border:1px solid var(--line);padding:9px 16px;background:var(--paper)}
.catbar a:hover{background:var(--ink);color:var(--paper)}
.catsec{padding:58px 0;border-bottom:1px solid var(--line)}
.catsec .ch{display:flex;align-items:baseline;gap:14px;margin-bottom:8px}
.catsec .lv{font-family:'Cormorant Garamond',serif;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gray)}
.catsec h2{font-family:'Noto Serif KR',serif;font-size:26px;font-weight:500;letter-spacing:-.02em}
.catsec .cdesc{color:var(--ink-soft);font-size:15px;margin-bottom:24px}
.artgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.art{display:block;background:var(--paper-pure);padding:24px 24px;transition:background .25s}
.art:hover{background:#fff}
.art .k{font-family:'Cormorant Garamond',serif;font-size:12px;letter-spacing:.1em;color:var(--gray);margin-bottom:8px}
.art h3{font-family:'Noto Serif KR',serif;font-size:17px;font-weight:500;line-height:1.45;margin-bottom:6px}
.art p{font-size:13.5px;color:var(--gray);line-height:1.5}

/* CTA band */
.ctaband{background:var(--ink);color:var(--paper);text-align:center;padding:100px 32px}
.ctaband h2{font-family:'Noto Serif KR',serif;font-weight:500;font-size:clamp(26px,3.2vw,38px);letter-spacing:-.02em;margin-bottom:16px;color:var(--paper-pure)}
.ctaband p{color:#c9c6bd;font-size:17px;margin-bottom:30px}
.ctaband .row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ctaband .b1{background:var(--paper);color:var(--ink);padding:14px 28px;font-weight:500;font-size:15px}
.ctaband .b2{border:1px solid rgba(244,241,234,.4);color:var(--paper);padding:14px 28px;font-size:15px}

/* footer */
.ft{background:var(--ink);color:#9a9890;padding:60px 0 50px;border-top:1px solid var(--line-dk)}
.ft-in{max-width:var(--max);margin:0 auto;padding:0 32px;display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:24px}
.ft .brand{font-family:'Cormorant Garamond',serif;font-size:26px;letter-spacing:.16em;color:var(--paper-pure)}
.ft .brand small{display:block;font-size:11px;letter-spacing:.2em;color:#7c7a73;margin-top:6px}
.ft .copy{font-size:12.5px;color:#6a6862;line-height:1.8;text-align:right}

.note{text-align:center;margin-top:24px;font-size:13px;color:var(--gray)}
.btn-line{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--ink);padding:12px 24px;font-size:15px;transition:.2s}
.btn-line:hover{background:var(--ink);color:var(--paper)}

@media(max-width:880px){
  .gnb{display:none}.menu-btn{display:block}
  .grid2,.grid3,.datarow,.caserow{grid-template-columns:1fr}
  .grid4,.ben-grid,.artgrid{grid-template-columns:1fr}
  .datarow div{border-right:0;border-bottom:1px solid var(--line)}
  .tech-item{grid-template-columns:60px 1fr;gap:16px}.tech-item .tdesc{grid-column:1/-1}
  .ft-in{flex-direction:column;align-items:flex-start}.ft .copy{text-align:left}
  .spec thead{display:none}.spec,.spec tbody,.spec tr,.spec td{display:block;width:100%}
  .spec td.k{width:100%}
  .sec{padding:72px 0}.phero{padding:92px 0 54px}
}