:root{
  --ink:#15171b;
  --ink-2:#1e2126;
  --gold:#b8923f;
  --gold-light:#e3c988;
  --gold-deep:#8a6a26;
  --paper:#faf7f1;
  --stone:#efe9dd;
  --stone-2:#e4dccb;
  --text:#221f1a;
  --text-soft:#5c554a;
  --line:#d9cfb8;
  --serif: 'Iowan Old Style','Palatino Linotype','URW Palladio L',P052,Georgia,serif;
  --sans: ui-sans-serif,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:var(--sans);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0}
.eyebrow{
  font-family:var(--sans);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:700;display:inline-block;
}
.eyebrow.on-dark{color:var(--gold-light)}
section{padding:88px 0}
@media(max-width:720px){section{padding:56px 0}}

/* ---------- header ---------- */
header.site-header{background:var(--ink);position:sticky;top:0;z-index:50;border-bottom:1px solid #2a2d33}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 24px;max-width:1180px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px}
.brand-text{line-height:1.15}
.brand-text b{display:block;font-family:var(--serif);color:#f3ead4;font-size:1.02rem;letter-spacing:.03em}
.brand-text i{display:block;font-style:normal;font-size:.62rem;letter-spacing:.14em;color:var(--gold-light);text-transform:uppercase;margin-top:2px}
nav.main-nav{display:flex;gap:26px;align-items:center}
nav.main-nav ul{list-style:none;display:flex;gap:26px;margin:0;padding:0}
nav.main-nav a{font-size:.88rem;color:#d9d5cb;letter-spacing:.01em;padding:6px 0;display:block}
nav.main-nav a:hover{color:var(--gold-light)}
nav.main-nav li.menu-item-has-children{position:relative}
nav.main-nav .sub-menu{
  position:absolute;top:100%;left:0;background:var(--ink-2);border:1px solid #333;min-width:200px;
  padding:8px;display:none;box-shadow:0 12px 24px rgba(0,0,0,.35);list-style:none;margin:0;
}
nav.main-nav li.menu-item-has-children:hover .sub-menu{display:block}
nav.main-nav .sub-menu a{padding:9px 12px;font-size:.84rem;border-radius:2px}
nav.main-nav .sub-menu a:hover{background:#2a2d33}
.hotline{
  display:flex;align-items:center;gap:8px;background:linear-gradient(180deg,var(--gold-light),var(--gold));
  color:#241a08;font-weight:700;font-size:.86rem;padding:10px 16px;white-space:nowrap;
  border-radius:2px;letter-spacing:.01em;
}
.hotline small{display:block;font-weight:600;font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;opacity:.75}
.burger{display:none;background:none;border:1px solid #444;color:#f3ead4;padding:8px 10px;border-radius:2px;cursor:pointer}
@media(max-width:920px){ nav.main-nav{display:none} .burger{display:block} }
nav.main-nav.mobile-open{
  display:flex !important;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--ink-2);
  padding:16px 24px;gap:0;border-bottom:1px solid #2a2d33;
}
nav.main-nav.mobile-open ul{flex-direction:column;gap:0}
nav.main-nav.mobile-open .sub-menu{position:static;display:block;background:none;border:none;box-shadow:none;padding-left:14px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#f6f1e4;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(184,146,63,.18), transparent 60%),
    repeating-linear-gradient(115deg, #17191d 0 2px, #1b1e23 2px 4px),
    linear-gradient(160deg,#101215,#1c1f24 55%,#141619);
  padding:110px 0 90px;
}
@media(max-width:720px){.hero{padding:32px 0 40px}}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(800px 400px at 85% 20%, rgba(227,201,136,.10), transparent 55%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
@media(max-width:940px){.hero-inner{grid-template-columns:1fr}}
.hero h1{font-size:clamp(2.1rem,4.4vw,3.4rem);color:#faf5e8;margin:14px 0 18px;line-height:1.12;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--gold-light)}
.hero p.lead{font-size:1.05rem;color:#c9c3b4;max-width:46ch;margin:0 0 30px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 22px;font-size:.9rem;font-weight:700;
  border-radius:2px;letter-spacing:.01em;border:none;cursor:pointer;font-family:var(--sans);
}
.btn-gold{background:linear-gradient(180deg,var(--gold-light),var(--gold));color:#241a08}
.btn-ghost{border:1px solid #57503e;color:#f3ead4;background:none}
.trust-strip{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid #33302a}
.trust-strip div{flex:1 1 200px;padding:16px 20px 0;font-size:.82rem;color:#bdb6a4;border-left:1px solid #33302a}
.trust-strip div:first-child{border-left:none}
.trust-strip b{display:block;color:#f0e8d4;font-family:var(--serif);font-size:1rem;margin-bottom:2px}
@media(max-width:640px){
  .trust-strip{display:grid;grid-template-columns:1fr 1fr;gap:18px 16px}
  .trust-strip div{padding:0;border-left:none}
}

.swatch{display:block;aspect-ratio:4/5;position:relative;border:1px solid #33302a;overflow:hidden;background-size:cover;background-position:center}
.swatch img,.swatch video{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.hero-media video{object-position:center bottom}
.hero-media-photo img{object-position:center 35%}
.swatch-cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;z-index:2;
  background:linear-gradient(0deg, rgba(10,10,10,.78), transparent);
  color:#f4efe0;font-family:var(--serif);font-size:1rem;
}
.price-tag{font-family:var(--sans);font-size:.72rem;color:#e8dfc9;opacity:.85;display:block;margin-top:2px}
.tex-black{background:radial-gradient(3px 3px at 20% 30%,#55524a,transparent),radial-gradient(2px 2px at 60% 70%,#6b675c,transparent),radial-gradient(2px 2px at 80% 20%,#4a473f,transparent),radial-gradient(3px 3px at 40% 85%,#57544c,transparent),linear-gradient(135deg,#0e0e0f,#1c1b1a 60%,#111);background-size:60px 60px,50px 50px,55px 55px,65px 65px,cover}
.tex-white{background:radial-gradient(2px 2px at 25% 40%,#cfc6ac,transparent),radial-gradient(2px 2px at 70% 65%,#b9ae8e,transparent),radial-gradient(1.5px 1.5px at 50% 20%,#a99c78,transparent),linear-gradient(135deg,#f2ede1,#e6dfcd 60%,#efe9db);background-size:50px 50px,60px 60px,44px 44px,cover}
.tex-gold{background:radial-gradient(2px 2px at 30% 35%,#7a5a24,transparent),radial-gradient(2px 2px at 65% 60%,#a97f34,transparent),linear-gradient(135deg,#caa050,#8f6a2c 55%,#b8923f);background-size:46px 46px,52px 52px,cover}
.tex-red{background:radial-gradient(2px 2px at 30% 35%,#6e2620,transparent),radial-gradient(2px 2px at 65% 60%,#932f26,transparent),linear-gradient(135deg,#8a352a,#5c1f19 55%,#7a2b22);background-size:46px 46px,52px 52px,cover}
.tex-green{background:radial-gradient(2px 2px at 28% 32%,#2f4a3a,transparent),radial-gradient(2px 2px at 68% 58%,#3f6650,transparent),linear-gradient(135deg,#3c5c48,#213228 55%,#2e4838);background-size:48px 48px,54px 54px,cover}
.tex-brown{background:radial-gradient(2px 2px at 30% 34%,#5a3d26,transparent),radial-gradient(2px 2px at 66% 60%,#7a5735,transparent),linear-gradient(135deg,#6e4c2f,#402c1c 55%,#5c3f27);background-size:46px 46px,52px 52px,cover}

/* ---------- generic section chrome ---------- */
.kicker-row{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.kicker-row h2{font-size:clamp(1.5rem,2.6vw,2rem);text-wrap:balance}
.kicker-row a.more{font-size:.84rem;font-weight:700;color:var(--gold-deep);border-bottom:1px solid var(--gold-deep);padding-bottom:2px}
.section-alt{background:var(--stone)}

.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:900px){.grid-6{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid-6{grid-template-columns:1fr}}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;gap:32px}}
.about-grid p{color:var(--text-soft);font-size:1rem;max-width:56ch}
.stat-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-card{border:1px solid var(--line);padding:20px 18px;background:#fff}
.stat-card b{display:block;font-family:var(--serif);font-size:2rem;color:var(--gold-deep)}
.stat-card span{font-size:.82rem;color:var(--text-soft)}
.stat-note{font-size:.72rem;color:#9a9082;margin-top:10px}

.apps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:760px){.apps-row{grid-template-columns:1fr 1fr}}
.app-cell{background:var(--paper);padding:28px 22px}
.app-cell b{display:block;font-family:var(--serif);font-size:1.1rem;margin-bottom:6px}
.app-cell span{font-size:.86rem;color:var(--text-soft)}

.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:820px){.why-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.why-grid{grid-template-columns:1fr}}
.why-cell{background:#fff;padding:30px 26px}
.why-cell .num{font-family:var(--serif);color:var(--gold);font-size:1rem;display:block;margin-bottom:10px}
.why-cell h3{font-size:1.05rem;margin-bottom:8px}
.why-cell p{font-size:.88rem;color:var(--text-soft);margin:0}

.stats-band{background:var(--ink);color:#f3ead4;padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
@media(max-width:760px){.stats-grid{grid-template-columns:1fr 1fr}}
.stats-grid b{display:block;font-family:var(--serif);font-size:2.3rem;color:var(--gold-light)}
.stats-grid span{font-size:.8rem;color:#b7b0a0;letter-spacing:.02em}

.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.proj-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.proj-grid{grid-template-columns:1fr}}
.proj-card{display:block;aspect-ratio:4/3;position:relative;overflow:hidden;border:1px solid var(--line)}
.proj-cap{position:absolute;left:0;right:0;bottom:0;padding:12px 14px;background:linear-gradient(0deg,rgba(10,10,10,.75),transparent);color:#f4efe0;font-size:.82rem;z-index:2}

.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{padding:0 18px 0 0}
.step-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.step .n{flex:0 0 auto;width:30px;height:30px;border:1.5px solid var(--gold);color:var(--gold-deep);border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:.86rem}
.step-head h3{margin:0}
.step h3{font-size:.98rem;margin-bottom:6px}
.step p{font-size:.82rem;color:var(--text-soft);margin:0}

.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.quotes{grid-template-columns:1fr}}
.quote{background:#fff;border:1px solid var(--line);padding:26px}
.quote p{font-family:var(--serif);font-size:1.02rem;color:var(--text);margin:0 0 16px}
.quote footer{font-size:.8rem;color:var(--text-soft);display:flex;align-items:center;gap:12px}
.quote footer b{color:var(--text);display:block}
.quote-avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:0 0 auto;border:2px solid var(--stone-2)}

.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.blog-grid{grid-template-columns:1fr}}
.blog-card{border:1px solid var(--line);background:#fff}
.blog-thumb{display:block;aspect-ratio:16/10;position:relative;overflow:hidden}
.blog-thumb img{width:100%;height:100%;object-fit:cover}
.blog-body{padding:18px}
.blog-body .eyebrow{margin-bottom:8px}
.blog-body h3{font-size:1.02rem;margin-bottom:8px}
.blog-body h3 a{color:inherit}
.blog-body p{font-size:.86rem;color:var(--text-soft);margin:0}

.cta-band{background:linear-gradient(160deg,#171a1f,#1f232a);color:#f3ead4}
.cta-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
@media(max-width:860px){.cta-inner{grid-template-columns:1fr}}
.cta-inner h2{color:#f8f2e2;font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px;text-wrap:balance}
.cta-inner p{color:#c3bcac;max-width:44ch}
.form-card{background:#fff;color:var(--text);padding:26px;border-top:3px solid var(--gold)}
.form-card label{display:block;font-size:.76rem;letter-spacing:.04em;text-transform:uppercase;color:var(--text-soft);margin:14px 0 6px}
.form-card label:first-child{margin-top:0}
.form-card input,.form-card select,.form-card textarea{
  width:100%;border:1px solid var(--line);padding:11px 12px;font-family:var(--sans);font-size:.92rem;background:var(--paper);color:var(--text)
}
.form-card button{width:100%;margin-top:20px}
.form-msg{margin:0 0 16px;padding:12px 14px;font-size:.86rem;border-radius:2px}
.form-msg-ok{background:#eaf6ea;color:#1e5c2b;border:1px solid #bfe3c3}
.form-msg-err{background:#fdeeea;color:#8a2f1c;border:1px solid #f2c4b4}

footer.site-footer{background:var(--ink);color:#c8c2b3;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:40px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr;row-gap:36px}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font-family:var(--sans);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-light);margin-bottom:16px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.foot-grid ul a{font-size:.88rem;color:#c8c2b3}
.foot-grid ul a:hover{color:var(--gold-light)}
.foot-brand p{font-size:.88rem;color:#a49d8c;max-width:34ch}
.foot-contact li{font-size:.88rem}
.foot-contact b{color:#f0e8d4}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{width:34px;height:34px;border:1px solid #3a3d42;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem}
.bottom-bar{border-top:1px solid #2a2d33;margin-top:50px;padding:20px 0 90px;font-size:.78rem;color:#8b8576;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--ink);border-top:1px solid #33302a}
.mobile-bar .wrap{display:flex;padding:0;max-width:none}
.mobile-bar a{flex:1;text-align:center;padding:13px 6px;font-size:.78rem;font-weight:700;border-right:1px solid #2a2d33}
.mobile-bar a:last-child{border-right:none}
.mobile-bar a.call{background:linear-gradient(180deg,var(--gold-light),var(--gold));color:#241a08}
.mobile-bar a.zalo,.mobile-bar a.map{color:#f3ead4}
@media(max-width:720px){.mobile-bar{display:block} footer.site-footer{padding-bottom:0}}

/* ---------- inner page / product / blog single ---------- */
.page-hero{background:var(--ink);color:#f3ead4;padding:56px 0 40px}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.4rem);color:#faf5e8;text-wrap:balance}
.breadcrumb{font-size:.8rem;color:#a49d8c;margin-bottom:14px}
.breadcrumb a{color:#c9a24d}
.content-wrap{padding:64px 24px;max-width:868px;margin:0 auto;box-sizing:border-box}
.content-wrap.wide{max-width:1180px}
.entry-content{font-size:1.02rem;color:var(--text)}
.entry-content p{margin:0 0 20px}
.entry-content h2{font-size:1.4rem;margin:36px 0 14px}
.entry-content h3{font-size:1.15rem;margin:26px 0 10px}
.entry-content img{margin:24px 0;width:100%;height:auto;object-fit:cover;max-height:480px}
.entry-content ul,.entry-content ol{margin:0 0 20px;padding-left:22px}
.entry-content li{margin-bottom:8px}
.spec-table{width:100%;border-collapse:collapse;margin:24px 0 32px;font-size:.92rem}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.spec-table th{background:var(--stone);width:34%;font-weight:700;color:var(--text-soft);text-transform:uppercase;font-size:.74rem;letter-spacing:.04em}
.product-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0 32px}
@media(max-width:640px){.product-gallery{grid-template-columns:1fr 1fr}}
.product-gallery a{aspect-ratio:4/3;overflow:hidden;display:block}
.product-gallery img{width:100%;height:100%;object-fit:cover}
.archive-header{background:var(--ink);color:#f3ead4;padding:64px 0 44px;text-align:left}
.archive-header .eyebrow{margin-bottom:10px}
.archive-header h1{color:#faf5e8;font-size:clamp(1.8rem,3.6vw,2.6rem)}
.post-meta{font-size:.8rem;color:var(--text-soft);margin-bottom:20px}
.cta-inline{background:var(--stone);border-left:3px solid var(--gold);padding:22px 26px;margin:34px 0}
.cta-inline p{margin:0 0 12px;font-family:var(--serif);font-size:1.05rem}