/* Minh Ôtô — style trang sản phẩm (BYD Vietnam official colors) */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#252728; --ink2:#515253; --line:#DCDDDF;
  --sea:#F7F7F7; --sea-d:#252728; --deep:#252728; --aqua:#A8A9A9;
  --bg:#FBFCFC; --bg2:#F7F7F7; --red:#D70C19; --blue:#007aff;
  --shadow:0 18px 50px -20px rgba(0,0,0,.15); --r:18px;
}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
section{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--sea-d);background:#f0f0f1;padding:7px 16px;border-radius:30px;margin-bottom:16px}
.eyebrow.light{color:#d8d8db;background:rgba(255,255,255,.12)}
h1,h2,h3{line-height:1.14;letter-spacing:-.02em;font-weight:800}
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:1.02rem;padding:15px 30px;border-radius:50px;border:none;cursor:pointer;text-decoration:none;transition:.25s;white-space:nowrap}
.btn-main{background:var(--red);color:#fff;box-shadow:0 14px 30px -10px rgba(215,12,25,.3)}
.btn-main:hover{transform:translateY(-3px);box-shadow:0 20px 38px -10px rgba(0,0,0,.6)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-zalo{background:#0b0b0c;color:#fff}

/* NAV */
nav{position:sticky;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:900;letter-spacing:.04em;font-size:1.15rem;color:var(--deep);text-decoration:none}
.brand span{color:var(--sea)}
.nav-right{display:flex;align-items:center;gap:20px}
.nav-lnk{color:var(--ink2);text-decoration:none;font-weight:600;font-size:.94rem}
.nav-lnk:hover{color:var(--ink)}
.nav-cta{font-size:.9rem;padding:10px 20px;color:#fff}
@media(max-width:600px){.nav-lnk{display:none}.nav-cta{padding:9px 16px;font-size:.85rem}}

/* BREADCRUMB */
.crumb{position:static;background:var(--bg2);border-bottom:1px solid var(--line);font-size:.85rem;color:var(--ink2)}
.crumb .wrap{padding-top:11px;padding-bottom:11px}
.crumb a{color:var(--ink2);text-decoration:none}
.crumb a:hover{color:var(--ink)}
.crumb span{color:var(--ink);font-weight:600}

/* HERO */
.dhero{position:relative;padding:64px 0 56px;color:#fff;overflow:hidden}
.dhero::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(0,0,0,.06),rgba(8,8,10,.35))}
.dhero .wrap{position:relative;z-index:2}
.dhero h1{font-size:clamp(1.8rem,4.6vw,3rem);font-weight:900;margin-top:6px}
.dhero .tag{font-size:clamp(1rem,2.2vw,1.2rem);color:#e6e6e8;max-width:680px;margin-top:14px}
.dhero .price{margin-top:22px;font-size:1rem;color:#d8d8db}
.dhero .price b{display:block;font-size:clamp(1.7rem,4vw,2.4rem);font-weight:900;color:#fff;margin-top:2px}
.dhero .hcta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.g-hatch{background:linear-gradient(135deg,#D70C19,#A00815)}
.g-suv{background:linear-gradient(135deg,#D70C19,#B3091A)}
.g-sedan{background:linear-gradient(135deg,#E6263F,#C50316)}
.g-mpv{background:linear-gradient(135deg,#D70C19,#A00815)}
.g-flag{background:linear-gradient(135deg,#E6263F,#B3091A)}

/* QUICK STATS */
.qstats{background:var(--deep);color:#fff}
.qgrid{display:grid;grid-template-columns:repeat(4,1fr)}
.qbox{padding:26px 16px;text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.qbox:last-child{border-right:none}
.qbox .n{font-size:clamp(1.3rem,3vw,1.9rem);font-weight:900;background:linear-gradient(120deg,#fff,#bdbdbd);-webkit-background-clip:text;background-clip:text;color:transparent}
.qbox .l{font-size:.78rem;color:#9a9a9e;margin-top:4px}
@media(max-width:680px){.qgrid{grid-template-columns:repeat(2,1fr)}.qbox:nth-child(2){border-right:none}.qbox{border-bottom:1px solid rgba(255,255,255,.1)}}

/* SECTION */
.sec{padding:64px 0}
.sec-head{max-width:760px;margin:0 auto 38px;text-align:center}
.sec-head h2{font-size:clamp(1.5rem,3.4vw,2.2rem)}
.sec-head p{color:var(--ink2);margin-top:12px}
.bg-soft{background:var(--bg2)}

/* HIGHLIGHTS */
.hl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-width:880px;margin:0 auto}
.hl{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:0 10px 30px -22px rgba(0,0,0,.4)}
.hl h3{font-size:1.08rem;margin-bottom:7px;color:var(--deep)}
.hl h3::before{content:"";display:inline-block;width:8px;height:8px;background:var(--ink);border-radius:50%;margin-right:9px;vertical-align:middle}
.hl p{color:var(--ink2);font-size:.95rem}
@media(max-width:680px){.hl-grid{grid-template-columns:1fr}}

/* ARTICLE (đánh giá chi tiết) */
.article{max-width:820px;margin:0 auto}
.article-intro{font-size:1.12rem;color:var(--ink2);margin-bottom:30px;padding:22px 26px;background:var(--bg2);border-left:4px solid var(--red);border-radius:0 14px 14px 0}
.article h3{font-size:1.32rem;color:var(--deep);margin:36px 0 12px;display:flex;align-items:center;gap:12px}
.article h3::before{content:"";flex:0 0 auto;width:30px;height:30px;border-radius:9px;background:var(--red);box-shadow:0 6px 16px -6px rgba(215,12,25,.5)}
.article h3:first-child{margin-top:0}
.article p{color:var(--ink2);font-size:1.03rem;margin-bottom:14px}
.article p b,.article p strong{color:var(--deep);font-weight:700}
.article ul.alist{list-style:none;margin:6px 0 18px}
.article ul.alist li{position:relative;padding:8px 0 8px 32px;color:var(--ink2)}
.article ul.alist li::before{content:"✓";position:absolute;left:0;top:8px;width:22px;height:22px;border-radius:50%;background:#fdecec;color:var(--red);font-weight:900;font-size:.8rem;display:grid;place-items:center}
.pullquote{margin:26px 0;padding:22px 26px;background:linear-gradient(135deg,#fdecec,#fbfcfc);border:1px solid #f3cccd;border-radius:16px;font-size:1.08rem;font-weight:600;color:var(--deep);font-style:italic}

/* SPEC TABLE */
.spec-wrap{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.spec-row{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}
.spec-row:last-child{border:none}
.spec-row>div{padding:14px 24px}
.spec-row .k{color:var(--ink2);font-weight:500;background:#fafafa}
.spec-row .v{font-weight:700;color:var(--deep)}
@media(max-width:560px){.spec-row>div{padding:12px 16px;font-size:.92rem}}
.disc{max-width:760px;margin:16px auto 0;font-size:.84rem;color:var(--ink2);text-align:center;font-style:italic}

/* FINANCE TABLE */
.fin-wrap{max-width:760px;margin:0 auto}
.fin{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.fin th,.fin td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
.fin thead th{background:var(--deep);color:#fff;font-weight:700;font-size:.86rem}
.fin tbody tr:last-child td{border-bottom:none}
.fin tbody tr:nth-child(even){background:#fafafa}
.fin td b{color:var(--ink)}
@media(max-width:560px){.fin th,.fin td{padding:11px 12px;font-size:.84rem}}

/* BAND */
.band{position:relative;height:42vh;min-height:300px;overflow:hidden;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}
.band img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,8,10,.5),rgba(8,8,10,.66))}
.band .band-in{position:relative;z-index:2;max-width:680px;padding:0 22px}
.band h2{font-size:clamp(1.4rem,3.6vw,2.2rem);text-shadow:0 2px 24px rgba(0,0,0,.5)}
.band p{color:#e6e6e8;margin-top:10px}

/* FAQ */
.faq{max-width:780px;margin:0 auto}
.q{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.q summary{padding:18px 24px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;color:var(--deep)}
.q summary::-webkit-details-marker{display:none}
.q summary::after{content:"+";font-size:1.4rem;color:var(--ink);transition:.2s}
.q[open] summary::after{transform:rotate(45deg)}
.q .a{padding:0 24px 20px;color:var(--ink2)}

/* RELATED */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rel{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:inherit;transition:.2s;display:flex;flex-direction:column}
.rel:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d6d6d8}
.rel .rg{height:96px;display:block}
.rel b{padding:14px 16px 2px;font-size:1rem;color:var(--deep)}
.rel .rp{padding:0 16px 16px;font-size:.86rem;color:var(--ink2);font-weight:600}
@media(max-width:860px){.rel-grid{grid-template-columns:repeat(2,1fr)}}

/* FINAL */
.final{position:relative;color:#fff;text-align:center;padding:80px 0;overflow:hidden;background:#0a0a0b}
.final::before{content:"";position:absolute;inset:0;background:url(/img/front-dark.jpg) center/cover;opacity:.4}
.final::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,8,10,.8),rgba(14,14,16,.9))}
.final .wrap{position:relative;z-index:2}
.final h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:900;margin-bottom:14px}
.final p{color:#a6a6aa;max-width:560px;margin:0 auto}
.final-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}

footer{background:#0a0f14;color:#7c8794;padding:38px 0;text-align:center;font-size:.9rem}
footer b{color:#d8d8db}

/* FLOAT */
.float{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:12px}
.float a{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 10px 24px -6px rgba(0,0,0,.4);font-weight:800;font-size:.7rem;text-align:center;line-height:1.1;text-decoration:none}
.float .z{background:#0b0b0c}
.float .c{background:#1a1a1c}

/* ===== BYD light theme (trắng chủ đạo, red accents như byd.com/vn) ===== */
header.dhero{background:linear-gradient(160deg,#FBFCFC,#F7F7F7);color:var(--ink)}
header.dhero::after{display:none}
.dhero h1{color:var(--ink)}
.dhero .tag{color:var(--ink2)}
.dhero .price{color:var(--ink2)}
.dhero .price b{color:var(--red)}
.dhero .eyebrow.light{color:var(--red);background:#F7F7F7}
.dhero .btn-ghost{color:var(--ink);border-color:rgba(37,39,40,.2)}
.dhero .btn-ghost:hover{background:rgba(37,39,40,.05)}
.qstats{background:var(--bg2);color:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.qbox{border-right-color:var(--line)}
.qbox .n{background:none;-webkit-text-fill-color:var(--red);color:var(--red)}
.qbox .l{color:var(--ink2)}
@media(max-width:680px){.qbox{border-bottom-color:var(--line)}}