/* ===== Hello Store – các trang con ===== */
:root{--bg:#fff;--bg2:#f5f5f7;--tx:#1d1d1f;--tx2:#6e6e73;--blue:#0066cc;--btn:#0071e3;--line:#d2d2d7;--nav:rgba(251,251,253,.86);--ac:linear-gradient(90deg,#ef5345,#f2955c);box-sizing:border-box}
@media(prefers-color-scheme:dark){:root{--bg:#000;--bg2:#161617;--tx:#f5f5f7;--tx2:#a1a1a6;--blue:#2997ff;--line:#38383a;--nav:rgba(22,22,23,.86)}}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--tx);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6;letter-spacing:-.005em}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
nav.top{position:sticky;top:0;z-index:40;height:48px;background:var(--nav);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
nav.top>div{max-width:1024px;margin:auto;height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;font-size:12px;gap:14px}
nav.top a{color:var(--tx);opacity:.85}nav.top a:hover{opacity:1;text-decoration:none}
nav.top .logo{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;opacity:1}
nav.top .links{display:flex;gap:26px}
.lg{width:24px;height:20px;flex:none}
.wrap{max-width:980px;margin:auto;padding:0 22px}
.narrow{max-width:740px}
.crumb{font-size:13px;color:var(--tx2);padding:18px 0 0}.crumb a{color:var(--tx2)}
.pghd{padding:46px 0 26px}
.pghd.c{text-align:center}
.eyebrow{font-size:14px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--ac);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}
h1{font-size:clamp(32px,5.4vw,56px);line-height:1.07;letter-spacing:-.02em;margin-top:8px;font-weight:700}
.lead{font-size:clamp(18px,2.2vw,22px);color:var(--tx2);margin-top:14px;line-height:1.45;max-width:720px}
.pghd.c .lead{margin-left:auto;margin-right:auto}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.15;letter-spacing:-.01em;margin:44px 0 12px}
h3{font-size:20px;margin:26px 0 8px}
.sec{padding:34px 0}
.card{background:var(--bg2);border-radius:26px;padding:28px}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card h3{margin-top:0;font-size:19px}.card p{color:var(--tx2);font-size:15.5px;margin-top:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--btn);color:#fff;padding:12px 24px;border-radius:99px;font-size:16px;font-weight:600;min-height:46px;border:0;cursor:pointer;text-decoration:none}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.btn.o{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.pghd.c .btns{justify-content:center}
.art{padding-bottom:20px}
.art p{margin:14px 0;font-size:18px;line-height:1.7}
.art ol,.art ul{margin:14px 0 14px 22px;font-size:18px;line-height:1.65}.art li{margin:10px 0}
.art .meta{font-size:14px;color:var(--tx2);margin-top:10px}
.art .cb{background:var(--bg2);border-radius:20px;padding:20px 24px;margin:26px 0;font-size:16px}
.nl{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.nl a{display:block;background:var(--bg2);border-radius:24px;padding:26px;color:var(--tx);text-decoration:none}
.nl a:hover{transform:translateY(-2px)}.nl small{color:var(--tx2)}.nl h3{margin:6px 0;font-size:21px;line-height:1.25}.nl p{color:var(--tx2);font-size:15px}
details{background:var(--bg2);border-radius:18px;padding:16px 20px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;font-size:17px;min-height:28px}
details p{color:var(--tx2);margin-top:10px;font-size:16px}
table.tb{width:100%;border-collapse:collapse;font-size:15.5px}
table.tb th,table.tb td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.tb th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--tx2)}
.tbw{overflow-x:auto;background:var(--bg2);border-radius:20px;padding:6px 8px}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;vertical-align:middle}
.b-g{background:#d9f2e0;color:#0b6b2a}.b-y{background:#fff0c9;color:#8a5a00}.b-r{background:#ffd9d9;color:#a11}.b-b{background:#dbe9ff;color:#0a4aa8}
.map{border:0;width:100%;height:340px;border-radius:24px;background:var(--bg2)}
/* trang máy */
.pp{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;padding:26px 0}
.pp .im{background:var(--bg2);border-radius:30px;padding:24px;text-align:center}
.pp .im img{max-height:420px;width:auto;mix-blend-mode:multiply}
@media(prefers-color-scheme:dark){.pp .im img{mix-blend-mode:normal;border-radius:20px}}
.pp .sw{display:flex;gap:12px;margin:12px 0;flex-wrap:wrap}
.pp .sw button{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);cursor:pointer;padding:0}
.pp .sw button.on{box-shadow:0 0 0 3px var(--bg),0 0 0 5px var(--tx)}
.pr{font-size:clamp(24px,3vw,32px);font-weight:700;color:#ef5345}
.chips{display:flex;gap:8px;flex-wrap:wrap}.chips span,.chips a{background:var(--bg2);padding:9px 16px;border-radius:99px;font-size:15px;color:var(--tx)}
.est .res{background:var(--bg2);border-radius:22px;padding:24px;text-align:center;margin-top:18px}
.est .res b{display:block;font-size:clamp(26px,4vw,36px);color:#ef5345;margin:6px 0}
@media(max-width:734px){.g2,.g3,.nl,.pp{grid-template-columns:1fr}nav.top .links{display:none}.pghd{padding:30px 0 18px}.art p,.art ol,.art ul{font-size:17px}}

main p a,main li a,.hsf a,details a,.cb a{text-decoration:underline;text-underline-offset:2px}
.btn,.btns a,.chips a,.card a.btn{text-decoration:none}