/* DDCT Site — giao diện công khai. Một file, không phụ thuộc framework. */
:root{
  --teal:#0b6e66; --orange:#f26b1d; --ink:#13222b; --mute:#5b6b74; --line:#dbe4e3;
  --bg:#f2f6f5; --paper:#fff; --tint:#e3f1ef; --r:14px; --wrap:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font:400 16px/1.6 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-underline-offset:3px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.75rem,1.2rem + 2.4vw,2.9rem);font-weight:800}
h2{font-size:clamp(1.3rem,1.1rem + .9vw,1.75rem);font-weight:800}
h3{font-size:1.05rem;font-weight:600}
p{margin:0 0 .8em}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px;border-radius:4px}
.wrap{width:min(var(--wrap),100% - 32px);margin-inline:auto}
.narrow{max-width:780px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;z-index:99}
.skip:focus{left:8px}
.muted{color:var(--mute)} .sm{font-size:.875rem}
.hl{color:var(--teal);font-weight:600}
.lede{font-size:1.1rem;color:var(--mute);max-width:62ch}
.kicker{color:var(--teal);font-weight:600;margin:0 0 .4em}
.block{margin-block:44px}
.block-h{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.block-h a{font-weight:600}
.empty{background:var(--paper);border:1px dashed var(--line);padding:18px;border-radius:var(--r)}

/* Nút */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:0 20px;border-radius:999px;font-family:inherit;font-weight:600;font-size:1rem;line-height:1;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s}
.btn-cta{background:var(--orange);color:#fff}
.btn-cta:hover{background:#d95a12}
.btn-solid{background:var(--teal);color:#fff}
.btn-solid:hover{filter:brightness(1.1)}
.btn-ghost{border-color:var(--teal);color:var(--teal);background:transparent}
.btn-call{background:var(--tint);color:var(--teal);min-height:40px;padding:0 14px;white-space:nowrap}

/* Header */
.hd{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:18px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex-shrink:0}
.logo img{width:40px;height:40px;object-fit:contain}
.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--teal);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.3rem}
.logo-name{font-weight:800;font-size:1.05rem}
.search{position:relative;flex:1;max-width:380px}
.search input,.filter input,.hero-search input{width:100%;height:42px;border:1px solid var(--line);border-radius:999px;padding:0 16px;font:inherit;background:var(--bg)}
.search input:focus,.filter input:focus,.hero-search input:focus{outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px var(--tint)}
.nav{display:flex;gap:2px;margin-left:auto}
.nav a{padding:8px 12px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem}
.nav a:hover,.nav a[aria-current]{background:var(--tint);color:var(--teal)}
.burger{display:none;position:relative}
.burger summary{list-style:none;cursor:pointer;width:42px;height:42px;display:grid;place-content:center;gap:5px;border-radius:10px;background:var(--bg)}
.burger summary::-webkit-details-marker{display:none}
.burger summary span{display:block;width:20px;height:2px;background:var(--ink)}
.burger nav{position:absolute;right:0;top:50px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:8px;min-width:220px;box-shadow:0 12px 30px rgba(19,34,43,.14)}
.burger nav a{display:block;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600;border-radius:8px}
.burger nav a:hover{background:var(--tint)}

/* Gợi ý tìm kiếm */
.live{position:absolute;left:0;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 14px 34px rgba(19,34,43,.16);overflow:hidden;z-index:40;max-height:70vh;overflow-y:auto}
.live a{display:flex;align-items:center;gap:10px;padding:9px 12px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--bg)}
.live a:hover,.live a.on{background:var(--tint)}
.live img{width:38px;height:38px;object-fit:cover;border-radius:8px}
.live small{display:block;color:var(--mute);font-size:.75rem}
.live b{margin-left:auto;color:var(--orange);font-size:.85rem;white-space:nowrap}
.live p{margin:0;padding:12px;color:var(--mute)}

/* Hero */
.hero{background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;padding-block:48px 40px;align-items:center}
.hero h1{max-width:16ch}
.hero-search{position:relative;margin:22px 0 16px;max-width:560px}
.hero-search label{display:block;font-weight:800;font-size:1.05rem;margin-bottom:8px}
.hs-row{display:flex;gap:8px;background:#fff;border:2px solid var(--teal);border-radius:999px;padding:5px}
.hero-search .hs-row input{border:0;background:transparent;height:46px;font-size:1.05rem}
.hero-search .hs-row input:focus{box-shadow:none}
.hs-row .btn{white-space:nowrap;flex-shrink:0}
.hero-in.solo{grid-template-columns:1fr}
.hero-btns{display:flex;gap:10px;flex-wrap:wrap}
.hero-img{border-radius:var(--r);margin-bottom:14px;width:100%;object-fit:cover}
.tiles{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.tiles a{display:grid;grid-template-columns:auto 1fr;column-gap:10px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px;text-decoration:none;color:var(--ink);height:100%}
.tiles a:hover{border-color:var(--teal)}
.tile-ic{grid-row:span 3;font-size:1.5rem;line-height:1}
.tiles strong{font-size:.95rem}
.tiles span{font-size:.8rem;color:var(--mute);line-height:1.4}
.tiles em{font-style:normal;font-size:.72rem;font-weight:600;color:var(--orange);margin-top:4px}

/* Cam kết */
.trust{display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--r);margin-top:-22px;position:relative}
.trust div{display:flex;gap:10px;align-items:center;padding:16px 18px;border-left:1px solid var(--line)}
.trust div:first-child{border-left:0}
.trust span{font-size:1.5rem}
.trust p{margin:0;font-size:.82rem;color:var(--mute);line-height:1.35}
.trust strong{display:block;color:var(--ink);font-size:1.05rem}

/* Lưới thẻ */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.card:hover{border-color:#b9cfcc}
.card-img{position:relative;display:block;aspect-ratio:1;background:var(--bg)}
.card-post .card-img{aspect-ratio:16/10}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-phone .card-img img{object-fit:contain;padding:12px}
.noimg{display:grid;place-items:center;height:100%;font-size:2.4rem;opacity:.6}
.noimg.big{aspect-ratio:1;font-size:5rem;background:#fff;border-radius:var(--r)}
.tag{position:absolute;top:10px;font-size:.72rem;font-weight:600;padding:3px 9px;border-radius:999px}
.tag-sale{left:10px;background:var(--orange);color:#fff}
.tag-right{right:10px;background:#fff;color:var(--teal);border:1px solid var(--line)}
.card-body{padding:12px 14px 14px}
.card-t{margin:0 0 6px}
.card-t a{color:var(--ink);text-decoration:none}
.card-t a:hover{color:var(--teal)}
.card-body p{margin:0 0 4px}
.price{color:var(--orange);font-weight:800;font-size:1.05rem}
.price small{font-weight:400;color:var(--mute);font-size:.8rem}
.price del{color:var(--mute);font-weight:400;font-size:.85rem;margin-left:6px}
.price.big{font-size:1.8rem;margin:.2em 0 .4em}

/* Chips */
.chips{list-style:none;padding:0;margin:14px 0;display:flex;flex-wrap:wrap;gap:8px}
.chips a{display:inline-flex;gap:6px;align-items:center;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem}
.chips a:hover,.chips a[aria-current]{border-color:var(--teal);color:var(--teal);background:var(--tint)}
.chips small{color:var(--mute);font-weight:400}
.chips-sm a{padding:5px 12px;font-size:.85rem}

/* Quy trình */
.steps{list-style:none;counter-reset:s;padding:0;margin:16px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 16px 16px;position:relative}
.steps li::before{content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--teal);color:#fff;font-weight:800;margin-bottom:10px}
.steps strong{display:block}
.steps span{color:var(--mute);font-size:.9rem}
.steps-in{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px}
.faq summary{cursor:pointer;padding:16px 48px 16px 18px;font-weight:600;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:12px;font-size:1.4rem;color:var(--teal)}
.faq details[open] summary::after{content:"–"}
.faq details div{padding:0 18px 16px;color:var(--mute)}

/* Bản đồ */
.map-row{display:grid;grid-template-columns:340px 1fr;gap:20px;align-items:stretch}
.nap{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.nap p{margin:0 0 8px}
.map{width:100%;min-height:340px;border:0;border-radius:var(--r);background:#dfe8e6}

/* Form đặt lịch */
.lead{display:grid;grid-template-columns:1fr 1.2fr;gap:28px;background:var(--teal);color:#fff;border-radius:calc(var(--r) + 6px);padding:32px}
.lead a{color:#fff}
.lead-copy p{opacity:.92}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lead-form label{display:flex;flex-direction:column;gap:4px;font-size:.88rem;font-weight:600}
.lead-form input,.lead-form textarea{font:inherit;border:0;border-radius:10px;padding:11px 12px;color:var(--ink)}
.lead-form .full{grid-column:1/-1}
.lead .hp{position:absolute;left:-5000px}
.lead .ok,.lead .err{grid-column:1/-1;background:#fff;color:var(--teal);padding:14px;border-radius:10px;font-weight:600;margin:0}
.lead .err{color:#b42318}

/* Breadcrumb */
.crumbs ol{list-style:none;padding:0;margin:18px auto 0;display:flex;flex-wrap:wrap;gap:6px;font-size:.85rem;color:var(--mute)}
.crumbs li+li::before{content:"/";margin-right:6px;opacity:.5}
.crumbs a{color:var(--mute)}

/* Chi tiết */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:22px}
.g-main{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;aspect-ratio:1;display:grid;place-items:center}
.g-main img{width:100%;height:100%;object-fit:contain}
.g-thumbs{display:flex;gap:8px;margin-top:10px;overflow-x:auto}
.g-thumbs button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:2px;cursor:pointer;flex:0 0 68px}
.g-thumbs button[aria-pressed=true]{border-color:var(--teal)}
.variants{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.variants button{font:inherit;font-weight:600;border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;cursor:pointer;text-align:left}
.variants button small{display:block;font-weight:400;color:var(--mute);font-size:.8rem}
.variants button[aria-checked=true]{border-color:var(--teal);background:var(--tint)}
.facts{list-style:none;padding:0;margin:0 0 14px;border-top:1px solid var(--line)}
.facts li{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}
.facts span{color:var(--mute)}
.facts .in{color:#0f7b3f} .facts .out{color:#b42318}
.offers{list-style:none;padding:12px 14px;margin:0 0 14px;background:#fff6ef;border:1px solid #fbd9c3;border-radius:var(--r)}
.offers li{padding-left:22px;position:relative;margin:4px 0}
.offers li::before{content:"🎁";position:absolute;left:0}
.cta-row{display:flex;flex-wrap:wrap;gap:10px}
.cols{display:grid;grid-template-columns:1fr 320px;gap:32px;margin-top:36px}
.cols .main-col:only-child{grid-column:1/-1;max-width:860px}
.prose{font-size:1.02rem}
.prose h2{margin-top:1.4em}
.prose img{border-radius:10px;margin:1em 0}
.prose table{width:100%;border-collapse:collapse;margin:1em 0;background:#fff}
.prose td,.prose th{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose blockquote{margin:1em 0;padding:10px 16px;border-left:4px solid var(--teal);background:#fff}
.ticks{list-style:none;padding:0}
.ticks li{padding-left:26px;position:relative;margin:6px 0}
.ticks li::before{content:"✔";position:absolute;left:0;color:var(--teal);font-weight:800}
.specs{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.specs th,.specs td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:.92rem;vertical-align:top}
.specs th{color:var(--mute);font-weight:400;width:42%}
.card-flat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:18px 0}

/* Trả lời nhanh */
.quick{background:var(--tint);border-left:4px solid var(--teal);border-radius:0 var(--r) var(--r) 0;padding:14px 18px;margin:0 0 22px}
.quick p{margin:0}
.quick-h{font-weight:800;color:var(--teal);font-size:.85rem;margin-bottom:4px!important}
.quick-a{font-size:1.05rem}
.quick-by{margin-top:8px!important;font-size:.82rem;color:var(--mute)}

/* Bảng giá */
.filter{display:flex;gap:8px;max-width:560px;margin:14px 0}
.brand{margin-top:26px}
.models{list-style:none;padding:0;margin:10px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px}
.models a{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;text-decoration:none;color:var(--ink);font-weight:600}
.models a:hover{border-color:var(--teal);color:var(--teal)}
.models small{color:var(--orange);font-weight:600;font-size:.8rem}
.model-head{display:flex;gap:18px;align-items:center;margin-bottom:18px}
.model-img{width:96px;height:96px;object-fit:contain;background:#fff;border-radius:var(--r);border:1px solid var(--line)}

/* Phiếu báo giá — điểm nhấn chính của site */
.receipt{--edge:radial-gradient(circle at 8px -2px,transparent 7px,#fff 7.5px);background:#fff;max-width:640px;padding:26px 26px 22px;position:relative;margin:8px 0 22px;filter:drop-shadow(0 8px 22px rgba(19,34,43,.10))}
.receipt::before,.receipt::after{content:"";position:absolute;left:0;right:0;height:10px;background:var(--edge);background-size:16px 10px}
.receipt::before{top:-9px;transform:scaleY(-1)}
.receipt::after{bottom:-9px}
.receipt-h{display:flex;justify-content:space-between;gap:10px;font-weight:800;color:var(--teal);border-bottom:2px dashed var(--line);padding-bottom:12px;margin-bottom:6px}
.receipt table{width:100%;border-collapse:collapse}
.receipt thead{position:absolute;left:-9999px}
.receipt th,.receipt td{padding:11px 0;vertical-align:baseline;font-size:1.02rem}
.receipt th{text-align:left;font-weight:600;vertical-align:top}
.r-line{display:flex;align-items:baseline;gap:8px}
.r-line i{flex:1;min-width:16px;border-bottom:2px dotted #c6d3d1;transform:translateY(-4px)}
.receipt th small{display:block;font-weight:400;color:var(--mute);font-size:.8rem}
.receipt td{width:1%;vertical-align:top;text-align:right;font-weight:800;color:var(--orange);white-space:nowrap;padding-left:8px;font-variant-numeric:tabular-nums}
.receipt tr+tr{border-top:1px solid #eef3f2}
.receipt-f{margin:14px 0 0;padding-top:12px;border-top:2px dashed var(--line);font-size:.85rem;color:var(--mute)}

/* Phân trang */
.pager{display:flex;gap:6px;flex-wrap:wrap;margin-top:24px}
.pager a,.pager span{min-width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600}
.pager [aria-current]{background:var(--teal);color:#fff;border-color:var(--teal)}

/* Footer */
.ft{background:#0f2a2d;color:#c9d8d6;margin-top:56px;padding:40px 0 90px;font-size:.92rem}
.ft a{color:#fff}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.ft-name{font-weight:800;color:#fff;font-size:1.1rem}
.ft-h{font-weight:600;color:#fff}
.ft address{font-style:normal;display:flex;flex-direction:column;gap:4px}
.ft-note{border-top:1px solid #23474a;margin-top:24px;padding-top:16px;color:#8fa9a6}

/* Thanh liên hệ di động */
.dock{display:none}

@media (max-width:1024px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .nav{display:none}
  .burger{display:block}
  .hero-in{grid-template-columns:1fr}
  .trust{grid-template-columns:repeat(3,1fr)}
  .trust div:nth-child(4){border-left:0}
  .trust div{border-top:1px solid var(--line)}
  .trust div:nth-child(-n+3){border-top:0}
}
@media (max-width:720px){
  body{font-size:15.5px}
  .hd-in{gap:10px;min-height:58px}
  .logo-name,.btn-call{display:none}
  .search{max-width:none}
  .hero-in{padding-block:28px 34px;gap:22px}
  .tiles{grid-template-columns:repeat(3,1fr);gap:8px}
  .tiles a{grid-template-columns:1fr;text-align:center;padding:10px 6px}
  .tile-ic{grid-row:auto;margin-bottom:4px}
  .tiles span{display:none}
  .trust{grid-template-columns:1fr 1fr;margin-top:16px}
  .trust div{border-left:0;border-top:1px solid var(--line);padding:12px}
  .trust div:nth-child(-n+2){border-top:0}
  .grid,.grid-3{grid-template-columns:repeat(2,1fr);gap:10px}
  .scroller{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px}
  .scroller .card{flex:0 0 46%;scroll-snap-align:start}
  .detail,.cols,.map-row,.lead,.ft-grid{grid-template-columns:1fr}
  .lead{padding:22px}
  .lead-form{grid-template-columns:1fr}
  .receipt{padding:22px 16px 18px}
  .gallery:has(.noimg){display:none}
  .detail{margin-top:8px}
  .block{margin-block:32px}
  .dock{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
  .dock a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0;font-size:.75rem;font-weight:600;color:var(--ink);text-decoration:none}
  .dock b{font-size:1.15rem;line-height:1.2}
  .dock .dock-cta{background:var(--orange);color:#fff}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.hd,.ft,.dock,.lead{display:none}}