/* XÀI THỬ RỒI — BẢN C "một máy = một trang" (2026-10-18; nền trắng từ 2026-10-18 theo anh Lâm). Sáng, tối giản, tối giản: menu 3 mục, tab dưới đáy trên điện thoại. */
:root {
  --bg: #f5f5f7; --bg2: #ffffff; --mat: #ffffff; --mat2: #f0f0f3; --vien: rgba(0,0,0,.08); --vien2: rgba(0,0,0,.16);
  --chu: #17171b; --chu2: #45454d; --mo: #6d6d77; --vang: #a16207; --vang2: #ffd75e; --nut: #f5c22e; --do: #c8372d; --xanh: #1e8e4f;
  --bong: 0 1px 2px rgba(0,0,0,.05), 0 8px 24px -12px rgba(0,0,0,.12);
  --bo: 16px; --khung: 1180px; --day: 64px; color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body { margin: 0; background: var(--bg); color: var(--chu); font: 400 16px/1.6 "Be Vietnam Pro", system-ui, sans-serif; -webkit-font-smoothing: antialiased; overflow-x: hidden; padding-bottom: calc(var(--day) + env(safe-area-inset-bottom)); }
@media (min-width: 900px) { body { padding-bottom: 0; } }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
h1 em, h2 em { font-style: normal; color: var(--vang); }
svg { width: 1.2em; height: 1.2em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.khung { width: 100%; max-width: var(--khung); margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .khung { padding: 0 28px; } }
.mo { color: var(--mo); }
.ban-c { background: #5ec987; color: #062012; text-align: center; font-size: 12px; font-weight: 800; letter-spacing: .05em; padding: 5px 8px; }

/* nút */
.nut { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 42px; padding: 0 18px; border-radius: 999px; border: 1px solid transparent; font: 700 15px inherit; cursor: pointer; white-space: nowrap; }
.nut.lon { min-height: 52px; font-size: 16px; }
.nut.vang { background: linear-gradient(180deg, var(--vang2), var(--nut)); color: #1a1405; box-shadow: 0 1px 0 rgba(0,0,0,.08); flex: 1; }
.nut.vien { border-color: var(--vien2); color: var(--chu); }
.nut.vien:hover { border-color: var(--vang); color: var(--vang); }
.nut.luu-nho { width: 42px; padding: 0; background: var(--mat2); border-color: var(--vien2); color: var(--chu); flex: none; }
.nut.luu-nho.lon { width: 52px; }
.nut.luu-nho.on, [data-luu].on svg { color: var(--do); }
.nut.luu-nho.on svg { fill: var(--do); }

/* đầu trang: 1 hàng mỏng */
.dau { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.9); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--vien); }
.dau-in { display: flex; align-items: center; gap: 14px; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 15px; letter-spacing: .02em; margin-right: auto; }
.logo img { border-radius: 50%; }
.nav { display: none; gap: 4px; margin-right: auto; }
.nav a { padding: 8px 16px; border-radius: 999px; font-weight: 600; color: var(--chu2); }
.nav a:hover { color: var(--chu); background: var(--mat); }
.nav a[aria-current] { color: #1a1405; background: var(--nut); }
.tim { display: none; align-items: center; gap: 8px; width: 300px; height: 40px; padding: 0 14px; border-radius: 999px; background: var(--mat2); border: 1px solid var(--vien); color: var(--mo); }
.tim input { flex: 1; min-width: 0; border: 0; background: none; color: var(--chu); font: inherit; font-size: 14px; outline: none; }
.nut-tim, .luu { position: relative; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--mat); border: 1px solid var(--vien); }
.luu b { position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 4px; border-radius: 99px; background: var(--do); color: #fff; font-size: 11px; display: grid; place-items: center; }
.luu b[hidden] { display: none; }
@media (min-width: 900px) { .nav, .tim { display: flex; } .logo { margin-right: 8px; } .nut-tim { display: none; } }

/* thanh tab dưới đáy (điện thoại) */
.tab-day { position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; display: grid; grid-template-columns: repeat(4, 1fr); height: calc(var(--day) + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.97); backdrop-filter: blur(16px); border-top: 1px solid var(--vien2); }
.tab-day a { display: grid; place-items: center; align-content: center; gap: 2px; font-size: 11px; font-weight: 600; color: var(--mo); }
.tab-day a svg { width: 22px; height: 22px; }
.tab-day a[aria-current] { color: var(--vang); }
@media (min-width: 900px) { .tab-day { display: none; } }
.thanh-mua { position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center; padding: 10px 14px calc(10px + env(safe-area-inset-bottom)); background: rgba(255,255,255,.97); backdrop-filter: blur(16px); border-top: 1px solid var(--vien2); box-shadow: 0 -6px 20px -12px rgba(0,0,0,.2); }
.thanh-mua b { display: block; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.thanh-mua span { color: var(--vang); font-weight: 800; font-size: 15px; }
.thanh-mua .nut.vang { flex: none; padding: 0 22px; }
@media (min-width: 900px) { .thanh-mua { display: none; } }

/* hero khám phá */
.hero { padding: 48px 0 36px; text-align: center; background: radial-gradient(700px 360px at 50% 0%, rgba(245,194,46,.22), transparent 70%), var(--bg2); border-bottom: 1px solid var(--vien); }
.hero p { color: var(--chu2); margin: 14px auto 0; max-width: 560px; }
.tim-lon { display: flex; align-items: center; gap: 8px; max-width: 620px; margin: 26px auto 0; padding: 6px 6px 6px 18px; border-radius: 999px; background: var(--mat); border: 1px solid var(--vien2); box-shadow: var(--bong); }
.tim-lon:focus-within { border-color: var(--vang); }
.tim-lon span { color: var(--mo); display: grid; } .tim-lon input { flex: 1; min-width: 0; border: 0; background: none; color: var(--chu); font: inherit; outline: none; }
.tim-lon .nut { flex: none; }
.goi-y { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 16px; }
.goi-y a { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--vien2); background: var(--mat); color: var(--chu2); font-size: 13px; }
.goi-y a:hover { border-color: var(--vang); color: var(--vang); }

/* khối */
.khoi { margin-top: 44px; }
.khoi-dau { display: flex; justify-content: space-between; align-items: end; margin-bottom: 16px; }
.khoi-dau h2, .muc > h2 { font-size: clamp(21px, 3vw, 28px); font-weight: 700; letter-spacing: -.02em; }
.khoi-dau a { color: var(--vang); font-weight: 600; font-size: 14px; }
.cuon { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; margin: 0 -16px; padding: 0 16px 6px; }
.cuon::-webkit-scrollbar { display: none; }
.cuon > * { flex: 0 0 min(190px, 44vw); scroll-snap-align: start; }
.cam { display: grid; gap: 12px; margin: 44px 0 10px; }
@media (min-width: 760px) { .cam { grid-template-columns: repeat(3, 1fr); } }
.cam div { padding: 18px; border-top: 3px solid var(--nut); background: var(--bg2); box-shadow: var(--bong); border-radius: 0 0 12px 12px; }
.cam p { color: var(--chu2); font-size: 14px; margin-top: 4px; }
.dau-trang { padding: 34px 0 20px; } .dau-trang p { color: var(--chu2); margin-top: 10px; }

/* thẻ video */
.the-vd { display: grid; gap: 8px; }
.tv-anh { position: relative; aspect-ratio: 9 / 16; border-radius: 14px; overflow: hidden; background: var(--mat); border: 1px solid var(--vien); }
.tv-anh img { width: 100%; height: 100%; object-fit: cover; }
.tv-anh span { position: absolute; right: 8px; bottom: 8px; padding: 2px 7px; border-radius: 6px; background: rgba(0,0,0,.7); color: #fff; font-size: 12px; font-weight: 600; }
.tv-kieu { font-size: 12px; color: var(--vang); font-weight: 600; }
.the-vd h3 { font-size: 14px; font-weight: 600; line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* thẻ máy */
.luoi-may { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 700px) { .luoi-may { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; } }
@media (min-width: 1000px) { .luoi-may { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; } }
.the-may { display: flex; flex-direction: column; border-radius: var(--bo); overflow: hidden; background: var(--mat); border: 1px solid var(--vien); box-shadow: var(--bong); transition: border-color .2s, transform .2s; }
.the-may:hover { border-color: rgba(161,98,7,.45); transform: translateY(-2px); }
.tm-anh { position: relative; aspect-ratio: 4 / 5; background: #e9e9ee; } .tm-anh img { width: 100%; height: 100%; object-fit: cover; }
.tm-vd { position: absolute; right: 8px; bottom: 8px; display: flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: 99px; background: rgba(0,0,0,.7); color: #fff; font-size: 12px; font-weight: 700; }
.tm-vd svg { width: 11px; height: 11px; fill: currentColor; stroke: none; }
.tm-chu { display: grid; gap: 4px; padding: 12px 14px 14px; }
.tm-hang { font-size: 12px; color: var(--mo); } .the-may h3 { font-size: 16px; font-weight: 700; }
.tm-gia b { color: var(--vang); font-size: 17px; } .tm-gia i { font-style: normal; font-size: 11px; color: var(--mo); margin-left: 6px; } .tm-gia span { color: var(--mo); font-size: 13px; }
.tm-nt { font-size: 12px; color: var(--do); line-height: 1.4; }

/* thẻ cặp */
.luoi-cap { display: grid; gap: 14px; } @media (min-width: 700px) { .luoi-cap { grid-template-columns: repeat(2, 1fr); } } @media (min-width: 1000px) { .luoi-cap { grid-template-columns: repeat(3, 1fr); } }
.the-cap { display: block; border-radius: var(--bo); overflow: hidden; background: var(--mat); border: 1px solid var(--vien); box-shadow: var(--bong); }
.the-cap:hover { border-color: rgba(161,98,7,.45); }
.tc-anh { aspect-ratio: 16 / 9; background: #e9e9ee; } .tc-anh img { width: 100%; height: 100%; object-fit: cover; }
.tc-chu { padding: 14px 16px; } .tc-chu small { color: var(--mo); }
.tc-vs { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: center; font-weight: 700; font-size: 14px; }
.tc-vs span:last-child { text-align: right; } .tc-vs b { color: var(--vang); padding: 3px 12px; border-radius: 8px; background: var(--mat2); font-variant-numeric: tabular-nums; }

/* lọc */
.tim-trang { display: flex; align-items: center; gap: 8px; height: 46px; padding: 0 16px; border-radius: 999px; background: var(--mat); border: 1px solid var(--vien2); color: var(--mo); margin-bottom: 14px; }
.tim-trang input { flex: 1; min-width: 0; border: 0; background: none; color: var(--chu); font: inherit; outline: none; }
.loc { display: grid; gap: 10px; margin-bottom: 18px; }
.chips { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; margin: 0 -16px; padding: 0 16px; }
.chips::-webkit-scrollbar { display: none; }
.chips button { flex: none; min-height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--vien); background: var(--mat); color: var(--chu2); font: 600 13px inherit; cursor: pointer; }
.chips button.on { background: var(--chu); color: #fff; border-color: var(--chu); }
.gat { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 14px; cursor: pointer; }
.gat input { appearance: none; width: 42px; height: 24px; border-radius: 99px; background: var(--mat2); border: 1px solid var(--vien2); position: relative; cursor: pointer; transition: .2s; }
.gat input::after { content: ""; position: absolute; left: 3px; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,.3); transition: .2s; }
.gat input:checked { background: var(--nut); border-color: var(--nut); } .gat input:checked::after { left: 21px; background: #1a1405; }
.trong, .dang-tim { color: var(--mo); padding: 20px 0; text-align: center; }
[data-loc][hidden] { display: none !important; }

/* trang máy */
.vet { font-size: 13px; color: var(--mo); padding: 16px 0 6px; } .vet a:hover { color: var(--vang); }
.may-dau { display: grid; gap: 24px; padding-bottom: 8px; }
@media (min-width: 900px) { .may-dau { grid-template-columns: 340px 1fr; gap: 44px; align-items: start; } }
.may-vd { width: min(340px, 100%); margin: 0 auto; }
/* Điện thoại: video nhỏ lại (~55% chiều cao màn) để tên máy + giá lộ ra ngay màn đầu. */
@media (max-width: 899px) { .may-vd { width: min(250px, 62vw, calc(55vh * 9 / 16)); } .khung-dt { border-radius: 22px; padding: 5px; } .khung-dt video, .khung-dt img { border-radius: 18px; } }
.khung-dt { aspect-ratio: 9 / 16; border-radius: 28px; padding: 7px; background: linear-gradient(160deg, #2a2a30, #0f0f12); box-shadow: 0 30px 60px -30px rgba(0,0,0,.45); }
.khung-dt video, .khung-dt img { width: 100%; height: 100%; object-fit: cover; border-radius: 22px; background: #000; }
.vd-dang { text-align: center; font-size: 13px; color: var(--mo); margin-top: 10px; }
.may-hang { color: var(--mo); font-size: 14px; }
.may-tt h1 { margin-top: 4px; }
.ket-luan { margin-top: 14px; font-size: 17px; color: var(--chu2); line-height: 1.55; }
.nhan { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.nhan li { padding: 6px 12px; border-radius: 10px; background: var(--mat2); border: 1px solid var(--vien); font-weight: 700; font-size: 14px; }
.noi-that { margin-top: 16px; padding: 14px 16px; border-radius: 14px; background: #fdf0ee; border: 1px solid rgba(200,55,45,.3); display: grid; gap: 6px; }
.noi-that b { color: var(--do); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; } .noi-that p { color: var(--chu2); font-size: 15px; }
.hop-mua { margin-top: 18px; padding: 18px; border-radius: var(--bo); background: var(--mat); border: 1px solid var(--vien2); box-shadow: var(--bong); }
.hm-gia { display: grid; } .hm-gia b { font-size: 30px; font-weight: 800; color: var(--vang); font-variant-numeric: tabular-nums; } .hm-gia b.mo { font-size: 19px; color: var(--chu); } .hm-gia span { color: var(--mo); font-size: 13px; }
.hm-xt { margin-top: 10px; padding: 8px 12px; border-radius: 10px; border: 1px dashed rgba(161,98,7,.45); background: #fff8e6; color: var(--chu2); font-size: 13px; }
.hm-nut { display: flex; gap: 10px; margin-top: 14px; } .aff { margin-top: 10px; font-size: 12px; color: var(--mo); }
.tab-may { position: sticky; top: 60px; z-index: 30; display: flex; gap: 4px; margin: 30px -16px 0; padding: 10px 16px; overflow-x: auto; scrollbar-width: none; background: rgba(245,245,247,.94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--vien); }
.tab-may::-webkit-scrollbar { display: none; }
.tab-may a { flex: none; padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: 14px; color: var(--chu2); }
.tab-may a.on { background: var(--nut); color: #1a1405; }
@media (min-width: 768px) { .tab-may { margin: 30px -28px 0; padding: 10px 28px; } }
.muc { padding-top: 34px; } .muc > h2 { margin-bottom: 16px; }
.mo-ta { display: grid; gap: 12px; color: var(--chu2); max-width: 780px; } .hdh { margin-top: 14px; color: var(--mo); } .hdh b { color: var(--chu); }
.ds-vd { display: grid; gap: 10px; } @media (min-width: 700px) { .ds-vd { grid-template-columns: repeat(2, 1fr); } }
.vd-nho { display: grid; grid-template-columns: 76px 1fr; gap: 12px; align-items: center; padding: 8px; border-radius: 14px; border: 1px solid var(--vien); background: var(--mat); color: inherit; font: inherit; text-align: left; cursor: pointer; }
.vd-nho.on { border-color: var(--vang); }
.vn-anh { position: relative; aspect-ratio: 9 / 16; border-radius: 10px; overflow: hidden; background: #e9e9ee; } .vn-anh img { width: 100%; height: 100%; object-fit: cover; }
.vn-anh i { position: absolute; right: 4px; bottom: 4px; font-style: normal; font-size: 11px; padding: 1px 5px; border-radius: 5px; background: rgba(0,0,0,.7); color: #fff; }
.vn-chu { display: grid; gap: 2px; font-size: 14px; font-weight: 600; line-height: 1.35; } .vn-chu small { color: var(--vang); font-size: 12px; }
.pk-pt { color: var(--chu2); max-width: 820px; margin: -4px 0 18px; }

/* thẻ phụ kiện */
.luoi-pk { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 760px) { .luoi-pk { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; } } @media (min-width: 1100px) { .luoi-pk { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.the-pk { display: flex; flex-direction: column; border-radius: var(--bo); overflow: hidden; background: var(--mat); border: 1px solid var(--vien); box-shadow: var(--bong); }
.tp-anh { position: relative; aspect-ratio: 1; background: #fff; } .tp-anh img { width: 100%; height: 100%; object-fit: contain; }
.lc { position: absolute; left: 8px; top: 8px; padding: 3px 9px; border-radius: 99px; font-size: 11px; font-weight: 800; background: rgba(23,23,27,.78); color: #fff; }
.lc-thuong_hieu { background: var(--nut); color: #1a1405; } .lc-ban_chay { background: var(--do); color: #fff; }
.tp-chu { display: flex; flex-direction: column; gap: 6px; padding: 12px; flex: 1; }
.tp-cho a { font-size: 12px; font-weight: 700; color: var(--vang); }
.tp-loai { font-size: 12px; color: var(--mo); } .the-pk h3 { font-size: 14px; font-weight: 600; line-height: 1.35; }
.tp-ly { font-size: 13px; color: var(--chu2); line-height: 1.45; } .tp-pl { font-size: 12px; color: var(--mo); } .tp-pl b { color: var(--chu); }
.tp-shop { font-size: 12px; color: var(--mo); }
.tp-cuoi { display: flex; justify-content: space-between; align-items: baseline; gap: 6px; margin-top: auto; } .tp-cuoi b { color: var(--vang); font-size: 16px; } .tp-cuoi span { font-size: 12px; color: var(--mo); }
.tp-nut { display: flex; gap: 6px; } .tp-nut .nut { min-height: 38px; font-size: 13px; padding: 0 10px; } .tp-nut .luu-nho { width: 38px; }
@media (max-width: 480px) { .tp-ly { display: none; } }

/* so sánh cặp */
.cap-dau { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: start; margin-top: 10px; }
.ben { display: grid; gap: 8px; justify-items: center; text-align: center; }
.ben img { width: 100%; max-width: 220px; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 16px; border: 1px solid var(--vien); }
.ben h3 { font-size: clamp(15px, 2.4vw, 22px); } .ben b { color: var(--vang); } .ben-nut { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; } .ben-nut .nut { min-height: 36px; font-size: 13px; flex: none; }
.cap-ts { align-self: center; display: flex; gap: 8px; align-items: center; padding: 10px 14px; border-radius: 14px; background: var(--mat); border: 1px solid var(--vien2); }
.cap-ts b { font-size: clamp(28px, 6vw, 48px); font-weight: 800; color: var(--vang); } .cap-ts i { color: var(--mo); font-style: normal; }
.trang-cap .ket-luan { margin-top: 24px; text-align: center; max-width: 760px; margin-left: auto; margin-right: auto; }
.hiep { list-style: none; padding: 0; margin: 22px auto 0; max-width: 760px; border-radius: 14px; overflow: hidden; border: 1px solid var(--vien); }
.hiep li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--vien); background: var(--mat); font-size: 14px; } .hiep li:first-child { border-top: 0; }
.hiep b { color: var(--vang); text-align: right; } .hiep b.hoa { color: var(--mo); }
.trang-cap .noi-that { max-width: 760px; margin: 18px auto 0; }

/* đã lưu */
.luu-mon { display: grid; grid-template-columns: 72px 1fr auto; gap: 12px; align-items: center; padding: 12px; margin-bottom: 10px; border-radius: 14px; background: var(--mat); border: 1px solid var(--vien); }
.luu-mon img { width: 72px; height: 72px; object-fit: cover; border-radius: 10px; background: #fff; }
.luu-mon h3 { font-size: 15px; } .luu-mon small { display: block; color: var(--mo); font-size: 12px; } .luu-mon b { color: var(--vang); }
.luu-mon .xoa { background: none; border: 0; color: var(--mo); font: 500 12px inherit; text-decoration: underline; cursor: pointer; padding: 0; }
@media (max-width: 520px) { .luu-mon { grid-template-columns: 60px 1fr; } .luu-mon img { width: 60px; height: 60px; } .luu-mon > .nut { grid-column: 1 / -1; } }

/* ---------- BLOG ---------- */
.tab-day { grid-template-columns: repeat(5, 1fr); }
.doc-bai { display: inline-flex; align-items: center; gap: 8px; margin-top: 12px; color: var(--vang); font-weight: 700; font-size: 15px; }
.luoi-bai { display: grid; gap: 16px; } @media (min-width: 700px) { .luoi-bai { grid-template-columns: repeat(2, 1fr); } } @media (min-width: 1000px) { .luoi-bai { grid-template-columns: repeat(3, 1fr); } }
.the-bai { display: flex; flex-direction: column; border-radius: var(--bo); overflow: hidden; background: var(--mat); border: 1px solid var(--vien); box-shadow: var(--bong); transition: border-color .2s, transform .2s; }
.the-bai:hover { border-color: rgba(161,98,7,.45); transform: translateY(-2px); }
.tb-anh { aspect-ratio: 16 / 9; background: #e9e9ee; } .tb-anh img { width: 100%; height: 100%; object-fit: cover; }
.tb-chu { display: grid; gap: 6px; padding: 14px 16px 16px; }
.tb-may { font-size: 12px; color: var(--vang); font-weight: 700; } .the-bai h3 { font-size: 17px; line-height: 1.35; }
.tb-chu p:not(.tb-may) { font-size: 14px; color: var(--chu2); } .tb-chu small { color: var(--mo); font-size: 12px; }
.bai-dau { max-width: 820px; padding: 10px 0 18px; }
.bai-meta { color: var(--mo); font-size: 13px; margin-bottom: 10px; }
.bai h1 { font-size: clamp(28px, 4.4vw, 42px); }
.sapo { font-size: 19px; color: var(--chu2); margin-top: 14px; line-height: 1.6; }
.bai-luoi { display: grid; gap: 30px; } @media (min-width: 1040px) { .bai-luoi { grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; } }
.bai-than { max-width: 780px; font-size: 17px; line-height: 1.75; color: var(--chu2); }
.bai-than h2 { color: var(--chu); font-size: 26px; margin: 38px 0 12px; letter-spacing: -.02em; line-height: 1.25; scroll-margin-top: 90px; }
.bai-than h3 { color: var(--chu); font-size: 19px; margin-bottom: 8px; }
.bai-than p { margin: 0 0 14px; } .bai-than ul { padding-left: 20px; margin: 0 0 14px; } .bai-than li { margin-bottom: 6px; }
.bai-than a { color: var(--vang); }
.bai-bia { width: 100%; border-radius: 16px; border: 1px solid var(--vien); margin-bottom: 22px; }
.muc-luc { padding: 16px 20px; border-radius: 14px; background: var(--mat); border: 1px solid var(--vien); margin-bottom: 24px; font-size: 15px; }
.muc-luc b { color: var(--chu); } .muc-luc ol { margin: 8px 0 0; padding-left: 20px; } .muc-luc a { color: var(--chu2); } .muc-luc a:hover { color: var(--vang); }
.bang-ts { width: 100%; border-collapse: collapse; margin: 6px 0 10px; font-size: 15px; border-radius: 14px; overflow: hidden; background: var(--mat); }
.bang-ts caption { text-align: left; color: var(--chu); font-weight: 700; padding: 0 0 8px; font-size: 16px; }
.bang-ts th, .bang-ts td { padding: 10px 14px; border-top: 1px solid var(--vien); text-align: left; vertical-align: top; }
.bang-ts th { width: 34%; color: var(--mo); font-weight: 600; } .bang-ts td { color: var(--chu); }
.un-nh { display: grid; gap: 14px; margin-top: 30px; } @media (min-width: 640px) { .un-nh { grid-template-columns: 1fr 1fr; } }
.un-nh > div { padding: 16px 18px; border-radius: 14px; background: var(--mat); border: 1px solid var(--vien); }
.un-nh .un { border-color: rgba(30,142,79,.35); background: #eef8f2; } .un-nh .un h2 { color: var(--xanh); }
.un-nh .nh { border-color: rgba(200,55,45,.35); background: #fdf0ee; } .un-nh .nh h2 { color: var(--do); }
.un-nh h2 { font-size: 18px; margin: 0 0 8px; } .un-nh ul { margin: 0; font-size: 15px; }
.un-nh.hop h3 { font-size: 16px; }
.bai-vd { max-width: 340px; aspect-ratio: 9 / 16; border-radius: 18px; overflow: hidden; background: #000; } .bai-vd video { width: 100%; height: 100%; object-fit: cover; }
.bai-than details { border-radius: 12px; background: var(--mat); border: 1px solid var(--vien); margin-bottom: 8px; padding: 0 16px; }
.bai-than summary { cursor: pointer; padding: 14px 0; color: var(--chu); font-weight: 600; } .bai-than details p { margin: 0 0 14px; }
.bai-than .ket { margin-top: 10px; padding: 18px 20px; border-radius: 14px; background: #fff8e6; border: 1px solid rgba(161,98,7,.3); }
.bai-than .ket h2 { margin-top: 0; }
.bai-than .luoi-pk { font-size: 14px; line-height: 1.5; }
.bai-ben { display: none; } @media (min-width: 1040px) { .bai-ben { display: block; } .bai-ben .bl-mua { position: sticky; top: 90px; } }
.bl-mua { display: grid; gap: 8px; padding: 18px; border-radius: var(--bo); background: var(--mat); border: 1px solid var(--vien2); box-shadow: var(--bong); }
/* Link mua máy phải thấy ở MỌI khổ màn: hộp đầu bài + hộp trong mục "Mua … ở đâu" (màn < 1040px), hộp dính bên phải (≥ 1040px),
   dòng "Xem giá & mua" cuối kết luận (mọi khổ), thanh Mua dưới đáy (< 1040px). */
.bl-mua.trong-bai { max-width: 420px; margin: 14px 0; }
.bl-mua.dau-bai { max-width: 520px; margin-top: 18px; grid-template-columns: 1fr auto; align-items: center; column-gap: 14px; }
.bl-mua.dau-bai .bm-ten, .bl-mua.dau-bai .bm-gia, .bl-mua.dau-bai .bm-shop, .bl-mua.dau-bai .aff { grid-column: 1; }
.bl-mua.dau-bai .nut { grid-column: 2; grid-row: 1 / span 2; width: auto; }
.bl-mua.dau-bai .nut.vien { grid-row: 3 / span 2; }
@media (min-width: 1040px) { .bl-mua.trong-bai, .bl-mua.dau-bai { display: none; } }
@media (max-width: 520px) { .bl-mua.dau-bai { grid-template-columns: 1fr; } .bl-mua.dau-bai .nut, .bl-mua.dau-bai .nut.vien { grid-column: 1; grid-row: auto; width: 100%; } }
.ket-mua { margin: 10px 0 0 !important; } .ket-mua a { font-weight: 700; } .ket-mua small { color: var(--mo); }
@media (min-width: 900px) and (max-width: 1039px) { body:has(.bai) .thanh-mua { display: grid; } body:has(.bai) { padding-bottom: 80px; } }
.bm-ten { color: var(--chu); font-weight: 700; font-size: 17px; margin: 0 !important; } .bm-gia { color: var(--vang); font-weight: 800; font-size: 26px; margin: 0 !important; }
.bm-shop { color: var(--mo); font-size: 13px; margin: 0 !important; line-height: 1.45; }
.bl-mua .nut { width: 100%; } .bl-mua .aff { margin: 0; }

/* gợi ý tìm kiếm */
.co-goi-y { position: relative; }
.goi-y-tim { position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 70; max-height: min(70vh, 560px); overflow-y: auto; padding: 8px; border-radius: 16px; background: var(--mat); border: 1px solid var(--vien2); box-shadow: 0 24px 50px -18px rgba(0,0,0,.28); text-align: left; color: var(--chu); }
.tim .goi-y-tim { width: 420px; left: auto; right: 0; }
.gy-mon + .gy-mon { border-top: 1px solid var(--vien); margin-top: 6px; padding-top: 6px; }
.gy-may { display: grid; grid-template-columns: 44px 1fr; gap: 10px; align-items: center; padding: 6px; border-radius: 10px; }
.gy-may:hover { background: var(--mat2); }
.gy-may img { width: 44px; height: 58px; object-fit: cover; border-radius: 8px; }
.gy-may b { display: block; font-size: 15px; } .gy-may small { color: var(--vang); font-size: 13px; font-weight: 600; }
.gy-nhan { font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--mo); margin: 8px 6px 6px; }
.gy-pk { display: grid; gap: 6px; padding: 0 4px 4px; }
.muc .gy-pk { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; padding: 0; }
.gy-pk a { display: grid; grid-template-columns: 52px 1fr; gap: 10px; align-items: center; padding: 6px; border-radius: 10px; background: var(--mat2); border: 1px solid var(--vien); }
.gy-pk a:hover { border-color: rgba(161,98,7,.5); }
.gy-pk img { width: 52px; height: 52px; object-fit: contain; border-radius: 8px; background: #fff; }
.gy-pk span { display: grid; font-size: 13px; line-height: 1.35; font-weight: 600; color: var(--chu); }
.gy-may b { color: var(--chu); }
.gy-pk small { color: var(--mo); font-size: 11px; font-weight: 600; } .gy-pk i { font-style: normal; color: var(--mo); font-size: 11px; font-weight: 500; } .gy-pk b { color: var(--vang); font-size: 13px; }
.gy-pk a.gy-them { display: block; text-align: center; color: var(--vang); font-size: 13px; font-weight: 700; }
.gy-chua { padding: 10px 8px; color: var(--mo); font-size: 13px; }

/* chân */
.chan { margin-top: 60px; border-top: 1px solid var(--vien); background: var(--bg2); } .chan-in { display: grid; gap: 8px; padding-top: 26px; padding-bottom: 26px; font-size: 14px; }
.chan a { color: var(--vang); }
.toast { position: fixed; left: 50%; bottom: calc(var(--day) + 18px); transform: translate(-50%, 20px); opacity: 0; pointer-events: none; z-index: 60; padding: 10px 16px; border-radius: 99px; background: var(--chu); color: #fff; font-weight: 700; font-size: 14px; transition: .25s; white-space: nowrap; }
.toast.hien { opacity: 1; transform: translate(-50%, 0); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* THANH ĐẦU TRANG + THANH DƯỚI ĐÁY — nổi khối, vàng thương hiệu pha nhạt để logo con dấu vẫn nổi (anh Lâm 2026-10-18) */
:root { --thanh-vien: rgba(161,98,7,.24); --thanh-bong: rgba(120,80,0,.32); }
.dau { background: linear-gradient(180deg, #fff9e3, #ffefc2); border-bottom: 1px solid var(--thanh-vien); box-shadow: 0 2px 0 rgba(245,194,46,.45), 0 12px 26px -16px var(--thanh-bong); }
.nav a { color: #5c4708; }
.nav a:hover { color: var(--chu); background: rgba(255,255,255,.65); }
.nav a[aria-current] { color: #1a1405; background: #fff; box-shadow: 0 1px 3px var(--thanh-bong); }
.tim, .nut-tim, .luu { background: #fff; border-color: var(--thanh-vien); box-shadow: inset 0 1px 2px rgba(0,0,0,.04); }
.tab-day, .thanh-mua { background: linear-gradient(180deg, #ffefc2, #fff9e3); border-top: 1px solid var(--thanh-vien); box-shadow: 0 -2px 0 rgba(245,194,46,.45), 0 -12px 26px -16px var(--thanh-bong); }
.tab-day a { color: #6e5a22; }
.tab-day a[aria-current] { color: #1a1405; font-weight: 800; }
.thanh-mua span { color: #7a4f00; }
.thanh-mua .nut.vang { border-color: rgba(120,80,0,.35); box-shadow: 0 2px 8px -2px var(--thanh-bong); }
.thanh-mua .nut.vien, .thanh-mua .nut.luu-nho { background: #fff; border-color: var(--thanh-vien); }

/* VIDEO MỞ TRÊN YOUTUBE — không phát tại chỗ (anh Lâm 2026-10-18): ảnh bìa + nút phát + nhãn YouTube */
.khung-dt { position: relative; display: block; overflow: hidden; }
.khung-dt img { width: 100%; height: 100%; object-fit: cover; border-radius: 22px; background: #e9e9ee; }
.vd-phat { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; background: rgba(0,0,0,.55); color: #fff; backdrop-filter: blur(4px); transition: transform .2s, background .2s; pointer-events: none; }
.vd-phat svg { width: 28px; height: 28px; fill: #fff; stroke: none; margin-left: 4px; }
.vd-yt { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 99px; background: #fff; color: #17171b; font-weight: 700; font-size: 14px; white-space: nowrap; box-shadow: 0 4px 14px rgba(0,0,0,.3); }
.vd-yt svg, .vn-yt svg, .tv-anh span svg { width: 1.35em; height: 1.35em; }
.khung-dt:hover .vd-phat, .bai-vd:hover .vd-phat, .the-vd:hover .vd-phat { transform: translate(-50%, -50%) scale(1.08); background: #ff0033; }
.tv-anh .vd-phat { width: 44px; height: 44px; } .tv-anh .vd-phat svg { width: 20px; height: 20px; }
.tv-anh span { display: inline-flex; align-items: center; gap: 4px; }
.bai-vd { position: relative; display: block; } .bai-vd img { width: 100%; height: 100%; object-fit: cover; }
a.vd-nho { color: inherit; }
a.vd-nho:hover { border-color: rgba(161,98,7,.45); }
.vn-yt { display: inline-flex; align-items: center; gap: 5px; margin-top: 4px; font-style: normal; font-size: 12px; font-weight: 700; color: #cc0029; }