/* ============ BOYU — MCM Flexible Stone ============ */
:root{
  --bg:#F8F5EF; --bg2:#F1EBDF; --card:#EFE8DA;
  --ink:#1D1B18; --ink2:#5C574E; --mut:#8A8175;
  --line:#E3DBCB; --accent:#A8895A;
  --dark:#1D1B18; --dtext:#F3EDE0; --dmut:#A79E8E; --dline:#3D3830; --dpanel:#26221B;
  --r:2px;
  --sans:'Inter','Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
  --disp:'Archivo','Noto Sans SC',system-ui,sans-serif;
  --serif:'Bodoni Moda','Noto Serif SC',Georgia,serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.wrap{max-width:1280px;margin:0 auto;padding:0 40px}

/* ---------- utility bar ---------- */
.utilbar{background:var(--dark);height:40px;font-size:10px;letter-spacing:.14em;color:#A79E8E}
.utilbar-in{height:40px;display:flex;align-items:center;justify-content:space-between}
.utilbar a{color:#E3DCCB}
.utilbar .util-right{display:flex;align-items:center;gap:18px}
.utilbar i{width:1px;height:11px;background:#4A443A;display:inline-block}
.lang-btn{color:#E3DCCB;font-size:10px;letter-spacing:.14em;font-weight:500;padding:2px 0}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(248,245,239,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{font-family:var(--disp);font-weight:700;font-size:25px;letter-spacing:-.02em;color:var(--ink)}
.brand-rule{width:1px;height:26px;background:#D6CCBA}
.brand-desc{font-size:8px;letter-spacing:.18em;line-height:1.4;color:var(--mut);text-transform:uppercase;white-space:pre-line}
.nav-links{display:flex;gap:30px}
.nav-links a{font-size:12.5px;font-weight:500;color:#3A352D;position:relative;padding:6px 0}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent)}
.nav-right{display:flex;align-items:center;gap:16px}
.menu-btn{display:none;flex-direction:column;gap:5px;padding:8px}
.menu-btn span{width:20px;height:1.6px;background:var(--ink)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:600;letter-spacing:.14em;padding:17px 28px;border-radius:var(--r);transition:.2s}
.btn-dark{background:var(--ink);color:var(--bg)}
.btn-dark:hover{background:#000}
.btn-light{background:var(--dtext);color:var(--ink)}
.btn-light:hover{background:#fff}
.btn-sm{padding:12px 22px}
.btn-line{background:none;border:1px solid var(--dline);color:var(--dtext)}
.btn-line:hover{border-color:var(--dmut)}
.textlink{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:500;color:var(--ink)}
.textlink svg{transition:transform .2s}
.textlink:hover svg{transform:translateX(4px)}
.textlink.on-dark{color:var(--dtext)}

/* ---------- type ---------- */
.eyebrow{font-size:10.5px;font-weight:500;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}
.title{font-family:var(--disp);font-weight:600;font-size:44px;line-height:1.18;letter-spacing:-.03em;color:var(--ink)}
.title .serif{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:-.01em}
.lead{font-size:15px;line-height:1.7;color:var(--ink2)}
.section{padding:110px 0}
.section.tight{padding-top:0}
.section.alt{background:var(--bg2)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-start;gap:48px;margin-bottom:48px}
.sec-head .left{display:flex;flex-direction:column;gap:16px;max-width:640px}
.sec-head .side{max-width:420px;font-size:14.5px;line-height:1.65;color:var(--ink2)}
.on-dark .title{color:var(--dtext)}

/* ---------- hero ---------- */
.hero{padding:76px 0 92px}
.hero-grid{display:grid;grid-template-columns:560px 1fr;gap:72px;align-items:center}
.hero-copy h1{margin:28px 0 24px;font-family:var(--disp);font-weight:600;font-size:66px;line-height:1.12;letter-spacing:-.034em}
.hero-copy h1 .serif{font-family:var(--serif);font-style:italic;font-weight:400;font-size:54px;line-height:1.3;letter-spacing:-.01em;display:block}
.hero-copy p{max-width:520px;color:var(--ink2);font-size:16px;line-height:1.7}
.hero-cta{display:flex;align-items:center;gap:28px;margin-top:38px}
.hero-trust{margin-top:44px;font-size:11px;color:var(--mut);letter-spacing:.02em}
.hero-img{height:560px;border-radius:var(--r);overflow:hidden}
.hero-img img{width:100%;height:100%;object-fit:cover}

/* ---------- spec strip ---------- */
.specstrip{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.specstrip-in{display:flex;align-items:center;justify-content:space-between;height:96px}
.spec{display:flex;align-items:center;gap:14px}
.spec b{font-family:var(--disp);font-weight:600;font-size:22px;letter-spacing:-.02em}
.spec span{font-size:10px;font-weight:500;letter-spacing:.16em;line-height:1.5;color:var(--mut);text-transform:uppercase;white-space:pre-line}
.spec-div{width:1px;height:28px;background:#D8CFBC}

/* ---------- product cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column}
.card-img{height:300px;border-radius:var(--r);overflow:hidden;background:#E5DECF}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.04)}
.card-idx{margin-top:22px;font-size:11px;letter-spacing:.16em;color:var(--accent);font-weight:500}
.card h3{margin-top:8px;font-family:var(--disp);font-weight:600;font-size:21px;letter-spacing:-.02em}
.card p{margin-top:10px;font-size:13.5px;line-height:1.65;color:var(--ink2)}
.card .specs{margin-top:14px;font-size:10.5px;font-weight:500;letter-spacing:.08em;color:var(--mut);text-transform:uppercase}

/* ---------- split band ---------- */
.band{display:grid;grid-template-columns:560px 1fr;gap:72px;align-items:center}
.band-img{height:500px;border-radius:var(--r);overflow:hidden}
.band-img img{width:100%;height:100%;object-fit:cover}
.band-copy h2{margin:18px 0 20px}
.band-copy p{max-width:480px;color:var(--ink2);font-size:15.5px;line-height:1.7}
.band-sizes{margin-top:26px;font-size:11.5px;font-weight:500;letter-spacing:.12em;color:var(--mut)}
.band-copy .textlink{margin-top:30px}

/* ---------- why (dark) ---------- */
.why{background:var(--dark);color:var(--dtext)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why-cell{border-top:1px solid var(--dline);padding-top:24px}
.why-cell b{font-family:var(--disp);font-weight:600;font-size:34px;letter-spacing:-.02em;display:block}
.why-cell .k{margin:14px 0 10px;font-size:10.5px;font-weight:500;letter-spacing:.16em;color:var(--accent);text-transform:uppercase}
.why-cell p{font-size:13.5px;line-height:1.65;color:var(--dmut)}

/* ---------- applications ---------- */
.bento{display:grid;grid-template-columns:840px 1fr;gap:20px}
.bento-a img{height:520px;width:100%;object-fit:cover;border-radius:var(--r)}
.bento-b{display:flex;flex-direction:column;gap:14px}
.bento-b img{height:253px;width:100%;object-fit:cover;border-radius:var(--r)}
.caption{margin-top:14px;font-size:11.5px;color:var(--mut)}
.bento-b .caption{margin-top:0}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px 24px}
.projects-grid .ph{height:340px;border-radius:var(--r);overflow:hidden}
.projects-grid img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.projects-grid a:hover img{transform:scale(1.04)}

/* ---------- factory stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{border-top:1px solid var(--line);padding-top:22px}
.stat b{font-family:var(--disp);font-weight:600;font-size:36px;letter-spacing:-.02em}
.stat span{display:block;margin-top:10px;font-size:10.5px;font-weight:500;letter-spacing:.16em;color:var(--mut);text-transform:uppercase}
.certs{display:flex;gap:12px;flex-wrap:wrap;margin-top:48px}
.cert{background:var(--card);padding:9px 16px;border-radius:var(--r);font-size:10.5px;font-weight:500;letter-spacing:.1em;color:var(--ink2)}

/* ---------- cta band ---------- */
.ctaband{background:var(--dark);color:var(--dtext)}
.ctaband-in{display:flex;align-items:center;justify-content:space-between;gap:48px}
.ctaband h2{font-family:var(--disp);font-weight:600;font-size:38px;letter-spacing:-.03em;line-height:1.2;max-width:640px}
.ctaband h2 .serif{font-family:var(--serif);font-style:italic;font-weight:400}
.ctaband p{margin-top:14px;color:var(--dmut);font-size:14.5px;max-width:560px}
.ctaband .actions{display:flex;gap:14px;flex-shrink:0}

/* ---------- page head ---------- */
.page-head{padding:88px 0 64px;border-bottom:1px solid var(--line)}
.page-head h1{margin-top:18px;font-family:var(--disp);font-weight:600;font-size:52px;letter-spacing:-.03em;line-height:1.15}
.page-head h1 .serif{font-family:var(--serif);font-style:italic;font-weight:400}
.page-head p{margin-top:20px;max-width:620px;color:var(--ink2);font-size:15.5px;line-height:1.7}

/* ---------- series (products) ---------- */
.series{padding:72px 0;border-bottom:1px solid var(--line)}
.series:last-of-type{border-bottom:none}
.series-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:36px}
.series-head h2{font-family:var(--disp);font-weight:600;font-size:30px;letter-spacing:-.02em}
.series-head .cn{color:var(--accent);font-size:13px;font-weight:500;letter-spacing:.2em;margin-left:14px}
.series-head p{max-width:480px;font-size:13.5px;line-height:1.65;color:var(--ink2);text-align:right}
.series-media{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.series-media img{width:100%;height:560px;object-fit:cover;border-radius:var(--r);background:#E5DECF}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.chip{background:var(--card);padding:8px 14px;border-radius:var(--r);font-size:10.5px;font-weight:500;letter-spacing:.1em;color:var(--ink2)}
.swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.swatch{border-radius:var(--r);overflow:hidden;background:#E5DECF;aspect-ratio:3/4}
.swatch img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.swatch:hover img{transform:scale(1.05)}
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px}
.spec-table th{text-align:left;font-size:10.5px;font-weight:500;letter-spacing:.16em;color:var(--mut);text-transform:uppercase;padding:14px 16px 14px 0;border-bottom:1px solid var(--line);width:25%}
.spec-table td{padding:16px 16px 16px 0;border-bottom:1px solid var(--line);color:var(--ink)}

/* ---------- about ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.about-img{height:520px;border-radius:var(--r);overflow:hidden}
.about-img img{width:100%;height:100%;object-fit:cover}
.num-list{display:flex;flex-direction:column;gap:0;margin-top:8px}
.num-item{display:flex;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.num-item b{font-family:var(--disp);font-weight:600;font-size:22px;min-width:120px;letter-spacing:-.02em}
.num-item p{color:var(--ink2);font-size:14px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:460px 1fr;gap:72px}
.contact-item{padding:22px 0;border-bottom:1px solid var(--dline)}
.contact-item .k{font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--mut);text-transform:uppercase}
.contact-item .v{margin-top:8px;font-size:16px;font-weight:600;color:#000000}
.contact-item .v a{color:#000000}
.contact-item .v a:hover{color:var(--accent)}
.form{background:var(--dpanel);padding:40px;border-radius:var(--r);display:flex;flex-direction:column;gap:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field label{display:block;font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--mut);margin-bottom:9px;text-transform:uppercase}
.field input,.field textarea{width:100%;background:var(--dark);border:1px solid var(--dline);border-radius:var(--r);color:var(--dtext);font-family:inherit;font-size:13px;padding:14px 16px;outline:none;transition:border-color .2s}
.field input:focus,.field textarea:focus{border-color:var(--accent)}
.field textarea{min-height:104px;resize:vertical}
.form-note{font-size:11px;color:var(--dmut)}

/* ---------- footer ---------- */
.footer{background:#141210;color:#D9D2C2}
.footer-top{display:flex;justify-content:space-between;gap:64px;padding:72px 0 56px}
.footer-brand .brand-mark{color:var(--dtext)}
.footer-brand p{margin-top:16px;font-size:12.5px;line-height:1.7;color:var(--dmut);max-width:300px}
.footer-cols{display:flex;gap:72px}
.footer-col .k{font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--mut);text-transform:uppercase}
.footer-col a{display:block;margin-top:14px;font-size:12.5px;color:#D9D2C2}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #2A261F;padding:26px 0;display:flex;justify-content:space-between;font-size:10px;letter-spacing:.08em;color:var(--mut)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-grid,.band{grid-template-columns:1fr;gap:48px}
  .hero-copy h1{font-size:52px}
  .hero-copy h1 .serif{font-size:42px}
  .hero-img,.band-img,.about-img{height:420px}
  .cards{grid-template-columns:1fr 1fr}
  .why-grid,.stats{grid-template-columns:1fr 1fr;row-gap:48px}
  .bento{grid-template-columns:1fr}
  .bento-a img{height:420px}
  .swatches{grid-template-columns:repeat(3,1fr)}
  .projects-grid{grid-template-columns:1fr 1fr}
  .contact-grid,.two-col{grid-template-columns:1fr;gap:56px}
  .ctaband-in{flex-direction:column;align-items:flex-start}
}
@media (max-width:760px){
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .utilbar{display:none}
  .nav-links{display:none;position:absolute;top:86px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 24px 16px}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .menu-btn{display:flex}
  .nav-cta{display:none}
  .title,.page-head h1{font-size:34px}
  .hero{padding:48px 0 64px}
  .hero-copy h1{font-size:40px}
  .hero-copy h1 .serif{font-size:32px}
  .hero-img{height:320px}
  .specstrip-in{flex-wrap:wrap;height:auto;padding:20px 0;gap:16px 32px}
  .spec-div{display:none}
  .cards,.why-grid,.stats,.projects-grid{grid-template-columns:1fr}
  .swatches{grid-template-columns:repeat(2,1fr)}
  .series-media{grid-template-columns:1fr}
  .series-media img{height:380px}
  .series-head{flex-direction:column;align-items:flex-start;gap:12px}
  .series-head p{text-align:left}
  .form{padding:24px}
  .form-row{grid-template-columns:1fr}
  .footer-top{flex-direction:column;gap:40px}
  .footer-cols{flex-wrap:wrap;gap:40px}
  .sec-head{flex-direction:column;gap:16px}
}