:root{--ink:#1c1713;--muted:#6e655d;--cream:#f7f3ec;--paper:#fff;--brown:#6a4328;--dark:#23180f;--line:#e8e0d5;--accent:#b7773a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:Arial,Helvetica,sans-serif;line-height:1.6}.topbar{position:sticky;top:0;z-index:20;height:74px;padding:0 5vw;display:flex;align-items:center;gap:28px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none;min-width:270px}.brand .logo{width:44px;height:44px;border:2px solid var(--brown);display:grid;place-items:center;font-weight:900;color:var(--brown);border-radius:11px}.brand b{display:block;letter-spacing:.04em}.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:.16em}.topbar nav{display:flex;gap:22px;margin-left:auto}.topbar nav a{color:#342b25;text-decoration:none;font-size:14px;font-weight:700}.hotline{background:var(--brown);color:white;text-decoration:none;border-radius:999px;padding:10px 16px;font-weight:800;white-space:nowrap}
.hero{min-height:720px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:5vw;padding:56px 7vw 70px;background:linear-gradient(110deg,#fbf8f3 0%,#f5efe6 55%,#eee4d7 100%)}.hero-copy{max-width:700px}.eyebrow{font-size:12px;letter-spacing:.2em;font-weight:900;color:var(--brown);margin:0 0 12px}.eyebrow.light{color:#e8c8a6}.hero h1,.section h2,.contact h2{font-family:Georgia,serif;line-height:1.05;margin:0}.hero h1{font-size:clamp(48px,6vw,82px)}.hero h1 span{color:var(--brown)}.hero-copy>p:not(.eyebrow){font-size:18px;color:var(--muted);max-width:680px}.hero-image{height:610px;border-radius:28px;overflow:hidden;box-shadow:0 28px 70px rgba(70,45,26,.18)}.hero-image img{width:100%;height:100%;object-fit:cover}.hero-actions,.owner-actions,.contact-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{border:none;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:11px;font-weight:800;cursor:pointer}.btn.primary{background:var(--brown);color:#fff}.btn.outline{border:1px solid var(--brown);color:var(--brown);background:transparent}.btn.soft-btn{background:#eee5da;color:#4d3827}.btn.white{background:#fff;color:#281b13}.btn.ghost{border:1px solid rgba(255,255,255,.5);color:#fff}.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.badges span,.care-row span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;font-size:13px}
.section{padding:86px 7vw}.section.alt{background:var(--cream)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}.section h2{font-size:clamp(36px,4.2vw,60px)}.section-head p{color:var(--muted);max-width:760px}.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:25px}.filter{padding:9px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-weight:700;cursor:pointer}.filter.active{background:var(--dark);color:white}.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.gallery-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 8px 22px rgba(42,30,19,.06)}.gallery-card .imgwrap{height:410px;overflow:hidden}.gallery-card img{width:100%;height:100%;object-fit:cover;transition:.25s}.gallery-card:hover img{transform:scale(1.025)}.gallery-card div:last-child{padding:14px 15px}.gallery-card b{display:block}.gallery-card small{color:var(--muted)}
.feature-grid,.steps,.warranty-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}.feature-grid article,.steps article,.warranty-grid article{background:white;border:1px solid var(--line);padding:24px;border-radius:18px}.feature-grid b,.steps span{font-size:30px;color:var(--accent);font-family:Georgia,serif}.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.project-card{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden}.project-image{height:260px;overflow:hidden}.project-image img{width:100%;height:100%;object-fit:cover}.project-body{padding:19px}.project-body span{font-size:11px;font-weight:900;color:var(--brown);letter-spacing:.15em}.project-body h3{margin:6px 0 8px;font-size:21px}.project-body p{margin:0;color:var(--muted)}.disclaimer{margin-top:22px;color:#756b62;font-size:13px}
.install-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.install-grid figure{margin:0;background:#fff;border-radius:18px;overflow:hidden;border:1px solid var(--line)}.install-grid img{width:100%;height:300px;object-fit:cover;display:block}.install-grid figcaption{padding:13px 15px;font-weight:800}
.warranty{background:#fff}.warranty-grid{grid-template-columns:1fr 1fr}.warranty-grid strong{display:block;font-family:Georgia,serif;font-size:44px;color:var(--brown)}.care-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.contact{background:#281b13;color:#fff;padding:64px 7vw;display:flex;justify-content:space-between;gap:30px;align-items:center}.contact h2{font-size:46px}.contact p{color:#dfd3c8}.contact-actions{justify-content:flex-end}
footer{padding:24px 7vw;background:#17100b;color:#d7cec8;font-size:13px}
.floating{position:fixed;right:22px;z-index:15;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;text-decoration:none;color:white;font-weight:900;box-shadow:0 8px 25px rgba(0,0,0,.18)}.floating.zalo{bottom:84px;background:#1676ff}.floating.call{bottom:22px;background:#1c9f57}
dialog{border:none;border-radius:18px;padding:0;box-shadow:0 24px 90px rgba(0,0,0,.28);max-width:560px;width:92vw}dialog::backdrop{background:rgba(0,0,0,.55)}.panel{padding:28px;display:grid;gap:13px;position:relative}.panel label{display:grid;gap:6px;font-weight:700}.panel input,.panel select{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;font:inherit}.x{position:absolute;right:14px;top:10px;border:none;background:none;font-size:28px;cursor:pointer}.note{font-size:13px;color:var(--muted)}.add-row{display:flex;gap:8px}#categoryList{display:grid;gap:8px}.cat-row{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}.cat-row label{display:flex;align-items:center;gap:8px}
#viewer{background:#111;color:#fff;max-width:92vw;width:auto}.viewer-x{position:absolute;right:12px;top:8px;background:rgba(0,0,0,.5);color:#fff;border:none;width:42px;height:42px;border-radius:50%;font-size:25px;cursor:pointer}#viewer img{display:block;max-width:88vw;max-height:82vh;object-fit:contain}#viewer p{padding:10px 16px;margin:0;text-align:center}.protected{position:relative;user-select:none;-webkit-user-select:none}.protected:after{content:"";position:absolute;inset:0;z-index:2}.protected img{pointer-events:none;user-select:none;-webkit-user-drag:none}
@media(max-width:1050px){.topbar nav{display:none}.hotline{margin-left:auto}.hero{grid-template-columns:1fr}.hero-image{height:520px}.gallery{grid-template-columns:repeat(3,1fr)}.project-grid,.install-grid{grid-template-columns:repeat(2,1fr)}.feature-grid,.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.topbar{height:66px;padding:0 4vw}.brand{min-width:0}.brand small{display:none}.brand b{font-size:13px}.hotline{font-size:12px;padding:8px 10px}.hero{padding:42px 5vw}.hero h1{font-size:45px}.hero-image{height:450px}.section{padding:62px 5vw}.section-head{display:block}.owner-actions{margin-top:18px}.gallery{grid-template-columns:repeat(2,1fr);gap:11px}.gallery-card .imgwrap{height:300px}.project-grid,.install-grid,.feature-grid,.steps,.warranty-grid{grid-template-columns:1fr}.contact{display:block}.contact-actions{justify-content:flex-start}.contact h2{font-size:36px}.install-grid img{height:250px}}
.hero h1{white-space:normal}.hero-desc{font-size:18px;color:var(--muted);max-width:680px}.contact-modal{border:none;border-radius:22px;padding:0;max-width:520px;width:92vw;box-shadow:0 28px 90px rgba(0,0,0,.35)}.contact-modal::backdrop{background:rgba(20,15,10,.58)}.contact-modal-card{padding:30px;position:relative;text-align:center;background:#fff}.contact-modal-card h3{font-size:28px;margin:12px 0 6px}.contact-modal-card p{font-size:20px;font-weight:800;margin:0 0 18px;color:var(--brown)}.contact-modal-card small{display:block;margin-top:16px;color:var(--muted);line-height:1.5}.modal-close{position:absolute;right:14px;top:10px;border:0;background:transparent;font-size:30px;cursor:pointer}.zalo-badge{display:inline-flex;padding:8px 14px;border-radius:999px;background:#1676ff;color:#fff;font-weight:900}.modal-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.btn.zalo-open{background:#1676ff;color:white}.js-zalo{cursor:pointer}
@media(max-width:700px){.contact-modal-card h3{font-size:24px}.contact-modal-card p{font-size:18px}}
/* V5 additions */
.hero-actions{align-items:center}.call-direct{background:#1b7d49;color:#fff}.lead-section{padding:76px 7vw;background:linear-gradient(120deg,#2a1b12,#6a4328);color:#fff;display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;align-items:start}.lead-copy h2{font-family:Georgia,serif;font-size:clamp(34px,4vw,56px);line-height:1.08;margin:0 0 14px}.lead-copy p{color:#eadfd4;font-size:17px}.lead-privacy{font-size:13px;color:#d8c8ba;margin-top:18px}.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:#fff;color:#21170f;padding:22px;border-radius:18px}.lead-form label{display:grid;gap:6px;font-weight:800;font-size:13px}.lead-form input,.lead-form select,.lead-form textarea,.admin-login-inline input{width:100%;padding:12px;border:1px solid #ddd2c6;border-radius:9px;font:inherit}.lead-form .wide{grid-column:1/-1}.lead-form .consent{display:flex;grid-column:1/-1;align-items:flex-start;gap:8px;font-weight:500}.lead-form .consent input{width:auto;margin-top:4px}.hp{position:absolute!important;left:-9999px!important}.lead-message{font-size:13px;min-height:20px}.lead-message.success{color:#13733c}.lead-message.error{color:#a61b1b}.social-links{display:flex;gap:12px;flex-wrap:wrap}.social-links a{color:#eadfd4;text-decoration:none}.admin-fab{position:fixed;left:18px;bottom:18px;z-index:16;border:1px solid #d6c5b5;background:rgba(255,255,255,.94);color:#352317;border-radius:999px;padding:10px 14px;font-weight:800;box-shadow:0 7px 25px #0002;cursor:pointer}.admin-login-inline{display:grid;gap:12px}.admin-login-inline label{display:grid;gap:6px;font-weight:800}.admin-lock{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:#efe4d8;font-size:24px}
@media(max-width:800px){.lead-section{grid-template-columns:1fr;padding:58px 5vw}.lead-form{grid-template-columns:1fr}.lead-form .wide{grid-column:1}.admin-fab{left:10px;bottom:10px;font-size:12px;padding:8px 10px}}