/* ============================================================
   PHẾ LIỆU CÔNG TRÌNH TOÀN THẮNG — style.css (dùng chung)
   Palette: trắng · than #17191c · đồng #b0541c · thép #2e3a45
   ============================================================ */
:root{
  --ink:#17191c; --copper:#b0541c; --copper-dark:#8f4315; --copper-soft:#f6e7da;
  --steel:#2e3a45; --steel-soft:#e8edf1; --soft:#f6f7f5; --line:#e3e3de;
  --green:#2c6e49; --max-w:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',sans-serif;background:#fff;color:var(--ink);font-size:16px;line-height:1.68}
img{max-width:100%;display:block}
a{color:var(--copper);text-decoration:none}
h1,h2,h3,h4{font-family:'Archivo',sans-serif;line-height:1.18}
.wrap{max-width:var(--max-w);margin:0 auto;padding:0 22px}

/* ---------- Top bar ---------- */
.topbar{background:var(--steel);color:#cfd8de;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;gap:14px;padding:7px 22px;flex-wrap:wrap}
.topbar a{color:#fff;font-weight:600}

/* ---------- Header ---------- */
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 6px rgba(0,0,0,.05)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 22px}
.logo{line-height:1.05}
.logo b{font-family:'Archivo';font-weight:900;font-size:21px;letter-spacing:-.3px;color:var(--ink);display:block}
.logo b span{color:var(--copper)}
.logo small{font-family:'Archivo';font-weight:700;font-size:10.5px;letter-spacing:.22em;color:var(--steel)}
nav.main{display:flex;gap:4px;overflow-x:auto;-webkit-overflow-scrolling:touch}
nav.main a{font-family:'Archivo';font-weight:700;font-size:13.5px;color:var(--ink);padding:9px 11px;border-radius:4px;white-space:nowrap}
nav.main a:hover{background:var(--soft)}
nav.main a.on{color:var(--copper);background:var(--copper-soft)}
.head-call{display:inline-block;font-family:'Archivo';font-weight:700;font-size:14px;background:var(--copper);color:#fff;padding:10px 16px;border-radius:5px;white-space:nowrap}
.head-call:hover{background:var(--copper-dark)}
@media(max-width:900px){.head-call{display:none}}

/* ---------- Băng giá chạy (signature) ---------- */
.ticker{background:var(--ink);color:#e9e4dc;overflow:hidden;border-bottom:3px solid var(--copper)}
.ticker-track{display:flex;width:max-content;animation:tick 46s linear infinite}
.ticker-track:hover{animation-play-state:paused}
.ticker span{font-family:'Archivo';font-weight:700;font-size:13px;padding:8px 26px;white-space:nowrap;border-right:1px solid #33373c}
.ticker span b{color:#f0b783}
.ticker span i{font-style:normal;color:#8fa2ae;font-weight:400}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.ticker-track{animation:none}}

/* ---------- Hero ---------- */
.hero{padding:52px 0 46px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero h1{font-weight:900;font-size:clamp(28px,4vw,42px);letter-spacing:-.8px;margin-bottom:14px}
.hero h1 em{font-style:normal;color:var(--copper)}
.hero .sub{font-size:17px;color:#4a4f54;margin-bottom:20px}
.hero-img{border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:0 10px 30px rgba(23,25,28,.12);background:var(--steel-soft);aspect-ratio:16/10}
.hero-img img{width:100%;height:100%;object-fit:cover}
.hero-points{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.hero-points div{font-size:13.5px;color:#4a4f54}
.hero-points b{display:block;font-family:'Archivo';font-weight:900;font-size:19px;color:var(--ink)}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero{padding:36px 0}}

/* ---------- Nút ---------- */
.btn{display:inline-block;font-family:'Archivo';font-weight:700;font-size:15px;padding:13px 22px;border-radius:6px;border:0;cursor:pointer}
.btn-copper{background:var(--copper);color:#fff}
.btn-copper:hover{background:var(--copper-dark);color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border:2px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Section ---------- */
section{padding:52px 0}
section.alt{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-family:'Archivo';font-weight:700;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--copper);margin-bottom:6px}
.sec-title{font-weight:900;font-size:clamp(22px,3vw,30px);letter-spacing:-.5px;margin-bottom:10px}
.sec-lead{color:#4a4f54;max-width:760px;margin-bottom:26px}

/* ---------- Thẻ dịch vụ ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.svc-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.svc-grid{grid-template-columns:1fr}}
.svc{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.svc:hover{box-shadow:0 10px 26px rgba(23,25,28,.13);transform:translateY(-3px)}
.svc .thumb{aspect-ratio:16/9;background:var(--steel-soft);overflow:hidden}
.svc .thumb img{width:100%;height:100%;object-fit:cover}
.svc .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.svc h3{font-weight:900;font-size:17px}
.svc p{font-size:14px;color:#4a4f54;flex:1}
.svc .price-line{font-family:'Archivo';font-weight:700;font-size:14px;color:var(--copper)}
.svc a.more{font-family:'Archivo';font-weight:700;font-size:13.5px}

/* ---------- Bảng giá ---------- */
.upd{display:inline-block;font-family:'Archivo';font-weight:700;font-size:13px;background:var(--copper-soft);color:var(--copper-dark);border:1px solid var(--copper);border-radius:4px;padding:5px 12px;margin-bottom:16px}
table.price{width:100%;border-collapse:collapse;background:#fff;font-size:14.5px;border:1px solid var(--line)}
table.price th{font-family:'Archivo';font-weight:700;font-size:12px;letter-spacing:.05em;text-transform:uppercase;background:var(--steel);color:#fff;text-align:left;padding:11px 14px}
table.price td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.price tr:nth-child(even) td{background:#fafaf8}
table.price .p{font-family:'Archivo';font-weight:700;color:var(--copper);white-space:nowrap}
.tbl-note{font-size:13px;color:#666;font-style:italic;margin-top:8px}
.tbl-scroll{overflow-x:auto}

/* ---------- Beat-quote ---------- */
.beat{background:var(--steel);color:#e6ebef;border-radius:8px;padding:20px 24px;margin-top:22px}
.beat b{font-family:'Archivo';color:#fff}

/* ---------- Quy trình ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-top:4px solid var(--copper);border-radius:6px;padding:16px 15px}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:'Archivo';font-weight:900;font-size:22px;color:var(--copper);display:block;margin-bottom:6px}
.step b{font-family:'Archivo';font-size:14.5px;display:block;margin-bottom:4px}
.step p{font-size:13px;color:#4a4f54}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--copper),var(--copper-dark));color:#fff;border-radius:10px;padding:30px 32px;display:grid;grid-template-columns:1.3fr .7fr;gap:26px;align-items:center}
@media(max-width:820px){.cta-band{grid-template-columns:1fr}}
.cta-band h3{font-weight:900;font-size:clamp(20px,2.6vw,26px);margin-bottom:8px}
.cta-band p{opacity:.95;font-size:15px}
.cta-band .btn-ghost{border-color:#fff;color:#fff;background:transparent}
.cta-band .btn-ghost:hover{background:#fff;color:var(--copper-dark)}
.cta-band .btn-white{background:#fff;color:var(--copper-dark)}

/* ---------- Trust / năng lực ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:760px){.trust-grid{grid-template-columns:1fr}}
.trust{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px 20px}
.trust b{font-family:'Archivo';font-size:15.5px;display:block;margin-bottom:5px}
.trust p{font-size:14px;color:#4a4f54}

/* ---------- FAQ ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:10px;padding:0 18px}
.faq summary{font-family:'Archivo';font-weight:700;font-size:15px;padding:14px 0;cursor:pointer;list-style:none;position:relative;padding-right:26px}
.faq summary::after{content:"+";position:absolute;right:2px;top:12px;font-size:20px;color:var(--copper)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 14px;font-size:14.5px;color:#4a4f54}

/* ---------- Trang con: hero gọn ---------- */
.page-hero{background:var(--soft);border-bottom:1px solid var(--line);padding:40px 0 34px}
.page-hero h1{font-weight:900;font-size:clamp(25px,3.4vw,36px);letter-spacing:-.6px;margin-bottom:10px}
.page-hero h1 em{font-style:normal;color:var(--copper)}
.page-hero .sub{color:#4a4f54;max-width:820px;margin-bottom:18px}
.crumb{font-size:13px;color:#777;margin-bottom:12px}
.crumb a{color:#777}
.page-img{border-radius:8px;overflow:hidden;border:1px solid var(--line);margin-top:24px;aspect-ratio:16/6;background:var(--steel-soft)}
.page-img img{width:100%;height:100%;object-fit:cover}

/* ---------- Nội dung 2 cột ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.side-card{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:20px 22px;position:sticky;top:86px}
.side-card h3{font-weight:900;font-size:16px;margin-bottom:8px}
.side-card ul{padding-left:18px;font-size:14px;color:#4a4f54}
.side-card li{margin-bottom:6px}

/* ---------- Form ---------- */
form.quote{display:grid;gap:14px}
form.quote label{font-family:'Archivo';font-weight:700;font-size:13.5px}
form.quote input,form.quote select,form.quote textarea{width:100%;font-family:'Be Vietnam Pro';font-size:15px;padding:11px 13px;border:1px solid #c9c9c2;border-radius:5px;background:#fff}
form.quote input:focus,form.quote select:focus,form.quote textarea:focus{outline:2px solid var(--copper);border-color:var(--copper)}

/* ---------- Footer ---------- */
footer.site{background:var(--ink);color:#b9bfc4;margin-top:60px;padding:44px 0 90px;font-size:14px}
footer.site .wrap{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px}
@media(max-width:820px){footer.site .wrap{grid-template-columns:1fr}}
footer.site h4{font-family:'Archivo';font-weight:900;font-size:15px;color:#fff;margin-bottom:10px}
footer.site a{color:#e3d3c4}
footer.site ul{list-style:none}
footer.site li{margin-bottom:7px}
.foot-note{border-top:1px solid #34383c;margin-top:26px;padding-top:14px;font-size:12.5px;color:#8b9196}

/* ---------- Sticky mobile bar ---------- */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;grid-template-columns:1fr 1fr;box-shadow:0 -4px 14px rgba(0,0,0,.18)}
.mbar a{font-family:'Archivo';font-weight:700;font-size:15px;text-align:center;padding:14px 8px;color:#fff}
.mbar .call{background:var(--copper)}
.mbar .zalo{background:#0068ff}
@media(max-width:820px){.mbar{display:grid}}

/* ---------- Tiện ích ---------- */
.mt10{margin-top:10px}.mt20{margin-top:20px}.mt30{margin-top:30px}
ul.checks{list-style:none}
ul.checks li{padding-left:26px;position:relative;margin-bottom:8px;font-size:15px}
ul.checks li::before{content:"✔";position:absolute;left:0;color:var(--green);font-weight:700}
:focus-visible{outline:3px solid var(--copper);outline-offset:2px}

/* ---------- Gallery thu mua thực tế ---------- */
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:900px){.gal{grid-template-columns:repeat(2,1fr)}}
.gal a{display:block;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff}
.gal img{width:100%;aspect-ratio:3/4;object-fit:cover;display:block;transition:transform .25s}
.gal a:hover img{transform:scale(1.04)}
.gal figcaption{font-size:12.5px;color:#4a4f54;padding:7px 10px;border-top:1px solid var(--line)}
.gal figure{margin:0}
.vid-wrap{max-width:360px;border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:0 8px 22px rgba(23,25,28,.12)}
.vid-wrap video{width:100%;display:block}
.gal-split{display:grid;grid-template-columns:1fr 380px;gap:26px;align-items:start}
@media(max-width:860px){.gal-split{grid-template-columns:1fr}}