:root{
  --bg:#f5f5f2; --card:#fff; --ink:#161616; --muted:#6f6f6f; --line:#e4e1dc; --soft:#efeee9; --accent:#111;
  --radius:22px; --shadow:0 18px 50px rgba(0,0,0,.08);
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;background:var(--bg);color:var(--ink)}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:18px 44px;background:rgba(245,245,242,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:14px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#111;color:white;font-weight:800}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:2px}.nav{display:flex;gap:24px;font-size:14px}.nav a{color:#333}.nav a:hover{color:#000}
main{max-width:1440px;margin:0 auto;padding:34px 36px 80px}.hero{display:grid;grid-template-columns:1fr 1.15fr;gap:28px;align-items:stretch;min-height:520px}.hero-copy,.hero-panel,.toolbar,.series,.contact{border:1px solid var(--line);background:linear-gradient(145deg,#fff,#f2f1ed);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-copy{padding:58px}.eyebrow{margin:0 0 12px;font-size:13px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);font-weight:700}.hero h1{margin:0;font-size:64px;line-height:1.02;letter-spacing:-.045em}.hero p:not(.eyebrow){font-size:18px;line-height:1.7;color:#444;max-width:560px}.hero-actions{display:flex;gap:12px;margin-top:32px}.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 20px;border-radius:999px;border:1px solid #222;background:white;font-weight:700}.btn.primary{background:#111;color:#fff}.hero-panel{display:grid;place-items:center;overflow:hidden;padding:36px}.hero-panel img{width:min(520px,90%);filter:drop-shadow(0 20px 30px rgba(0,0,0,.12))}
.toolbar{margin:28px 0;padding:18px;display:flex;gap:14px;align-items:end}.toolbar div{flex:1}.toolbar label{display:block;font-size:12px;font-weight:800;color:#777;margin:0 0 8px;text-transform:uppercase;letter-spacing:.08em}.toolbar input,.toolbar select{width:100%;height:46px;border:1px solid var(--line);border-radius:14px;background:white;padding:0 14px;font-size:15px}
.series{margin:34px 0;padding:34px}.series-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:24px}.series-head h2{margin:0;font-size:44px;letter-spacing:-.03em}.series-head p{margin:8px 0 0;color:var(--muted)}.count{color:var(--muted);font-weight:800}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:.2s ease;cursor:pointer}.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(0,0,0,.1)}.card-img{background:#fafafa;aspect-ratio:1/1;display:grid;place-items:center;padding:18px}.card-img img{width:100%;height:100%;object-fit:contain}.card-body{padding:16px}.card-kicker{font-size:12px;color:var(--muted);font-weight:800;text-transform:uppercase}.card h3{margin:6px 0 8px;font-size:26px}.chips{display:flex;gap:6px;flex-wrap:wrap}.chip{font-size:11px;padding:5px 8px;background:var(--soft);border-radius:999px;color:#555}
.contact{text-align:center;padding:50px;margin-top:36px}.contact h2{font-size:36px;margin:0 0 10px}.contact p{color:var(--muted)}
.modal{position:fixed;inset:0;z-index:100;display:none}.modal.active{display:block}.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(5px)}.modal-card{position:relative;margin:28px auto;background:var(--bg);border-radius:28px;max-width:1180px;max-height:calc(100vh - 56px);overflow:auto;box-shadow:0 30px 80px rgba(0,0,0,.28)}.close{position:sticky;top:18px;float:right;z-index:2;margin:18px;width:44px;height:44px;border:0;border-radius:50%;background:#111;color:white;font-size:28px;cursor:pointer}.detail{padding:32px}.detail-head{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;background:white;border:1px solid var(--line);border-radius:24px;padding:26px}.detail-copy h2{font-size:54px;margin:0}.detail-copy p{color:var(--muted);font-size:18px}.detail-img{background:#fafafa;border-radius:20px;padding:20px}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.feature{background:white;border:1px solid var(--line);border-radius:20px;padding:18px}.feature h4{margin:0 0 12px;font-size:18px}.spec{margin-top:18px;background:white;border:1px solid var(--line);border-radius:20px;padding:20px}.spec h4{margin:0 0 14px;font-size:18px}.spec img{margin:auto}.colors{margin-top:18px;background:white;border:1px solid var(--line);border-radius:20px;padding:20px}.color-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.color-card{border:1px solid var(--line);border-radius:16px;padding:10px;background:#fafafa}.color-card img{height:110px;width:100%;object-fit:contain}.color-card strong{display:block;margin-top:8px}.color-card span{font-size:12px;color:var(--muted)}
.hide{display:none!important}
@media (max-width:1100px){.grid{grid-template-columns:repeat(3,1fr)}.hero{grid-template-columns:1fr}.hero h1{font-size:52px}.detail-head{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr}.color-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:720px){.site-header{padding:14px 18px}.nav{display:none}main{padding:18px}.hero-copy{padding:32px}.hero h1{font-size:40px}.toolbar{display:block}.toolbar div+div{margin-top:12px}.grid{grid-template-columns:repeat(2,1fr)}.series{padding:22px}.series-head{display:block}.series-head h2{font-size:34px}.color-grid{grid-template-columns:repeat(2,1fr)}.modal-card{margin:0;max-height:100vh;border-radius:0}.detail{padding:18px}.detail-copy h2{font-size:38px}}
.brand-mark{font-size:13px;letter-spacing:.06em}.card-title{margin:0 0 6px;font-weight:800;color:#222}.card-desc{margin:0 0 12px;color:var(--muted);font-size:13px;line-height:1.45}.detail-copy h3{margin:6px 0 14px;font-size:26px;letter-spacing:-.02em}.detail-copy p{line-height:1.65}.feature-grid{grid-template-columns:repeat(3,1fr)}.feature p{margin:0 0 14px;color:var(--muted);font-size:14px;line-height:1.55}.spec-table{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.spec-table div{background:#fafafa;border:1px solid var(--line);border-radius:14px;padding:12px}.spec-table span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.spec-table strong{display:block;margin-top:5px;font-size:15px}.note{margin:12px 0 0;color:var(--muted);font-size:13px}.color-card{font:inherit;text-align:left;cursor:pointer;transition:.18s ease}.color-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.09);background:#fff}.color-card:focus-visible{outline:3px solid #111;outline-offset:2px}.contact-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:22px}.color-viewer{position:fixed;inset:0;z-index:200;display:none}.color-viewer.active{display:block}.color-viewer-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(6px)}.color-viewer-card{position:relative;margin:5vh auto;max-width:min(980px,92vw);background:#fff;border-radius:26px;padding:26px;box-shadow:0 30px 90px rgba(0,0,0,.35)}.color-viewer-card img{width:100%;max-height:72vh;object-fit:contain;background:#fafafa;border-radius:18px}.viewer-close{position:absolute;right:18px;top:18px;margin:0}.color-viewer-caption{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:14px}.color-viewer-caption strong{font-size:20px}.color-viewer-caption span{color:var(--muted)}
@media (max-width:1100px){.feature-grid{grid-template-columns:1fr}.spec-table{grid-template-columns:repeat(2,1fr)}}
@media (max-width:720px){.spec-table{grid-template-columns:1fr}.contact-actions{display:grid}.color-viewer-card{margin:0;min-height:100vh;border-radius:0;display:grid;align-content:center}.color-viewer-caption{display:block}.color-viewer-caption span{display:block;margin-top:4px}}
.brand-logo{width:78px;height:auto;display:block}.brand{min-width:250px}.site-header{gap:18px}.contact-footer{text-align:left;padding:46px}.footer-brand{display:flex;align-items:center;gap:18px;justify-content:center;text-align:center;flex-direction:column}.footer-brand img{width:min(240px,70vw);height:auto}.footer-brand p{margin:0;color:var(--muted);font-weight:700}.contact-info{margin:30px auto 26px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:720px}.contact-info div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-align:center}.contact-info span{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:800;margin-bottom:8px}.contact-info strong{font-size:17px}.qr-row{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}.qr-card{width:190px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;text-align:center;box-shadow:0 10px 26px rgba(0,0,0,.05)}.qr-card img{width:150px;height:150px;object-fit:contain;margin:0 auto 10px}.qr-card strong{font-size:15px}.copyright{text-align:center;margin:26px 0 0!important;color:var(--muted)}.floating-whatsapp{position:fixed;right:24px;bottom:24px;z-index:90;display:flex;align-items:center;gap:10px;background:#25d366;color:#fff;padding:15px 22px;border-radius:999px;font-weight:900;box-shadow:0 16px 38px rgba(37,211,102,.38)}.wa-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.22);font-size:16px}.floating-whatsapp:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(37,211,102,.45)}
@media (max-width:720px){.brand-logo{width:58px}.brand{min-width:0}.brand strong{font-size:14px}.contact-footer{padding:30px 18px}.contact-info{grid-template-columns:1fr}.floating-whatsapp{right:14px;left:14px;bottom:14px;justify-content:center}.qr-card{width:46%;min-width:150px}.qr-card img{width:120px;height:120px}body{padding-bottom:76px}}

/* v4 detail structure: two hinge cards + size image/spec + general product info */
.hinge-grid{grid-template-columns:repeat(2,1fr)}
.size-section{display:grid;grid-template-columns:minmax(280px,42%) 1fr;gap:22px;align-items:center}
.size-image{background:#fafafa;border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;place-items:center;min-height:220px}
.size-image img{width:100%;height:100%;max-height:340px;object-fit:contain}
.size-data h4,.general-section h4{font-size:22px;margin-bottom:16px}
.spec-table.size-only{grid-template-columns:repeat(3,1fr)}
.spec-table.general-only{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.hinge-grid{grid-template-columns:1fr 1fr}.size-section{grid-template-columns:1fr}.spec-table.general-only{grid-template-columns:repeat(2,1fr)}}
@media (max-width:720px){.hinge-grid{grid-template-columns:1fr}.spec-table.size-only,.spec-table.general-only{grid-template-columns:1fr}}

.floating-top{position:fixed;right:24px;bottom:86px;z-index:90;display:grid;place-items:center;width:46px;height:46px;border-radius:50%;background:#111;color:#fff;font-weight:900;box-shadow:0 12px 30px rgba(0,0,0,.22)}
.floating-top:hover{transform:translateY(-2px)}
@media (max-width:720px){.floating-top{right:18px;bottom:88px;width:42px;height:42px}}