:root{--red:#e11d2e;--red2:#b91c1c;--bg:#f8fafc;--card:#fff;--line:#e5e7eb;--text:#111827;--muted:#4b5563}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Be Vietnam Pro",system-ui,Arial,sans-serif;line-height:1.6;font-size:16px;animation:fadein .3s ease}
@keyframes fadein{from{opacity:.6}to{opacity:1}}
a{color:var(--red)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:720px}
h1{font-size:46px;line-height:1.2;margin:14px 0}
h2{font-size:30px;line-height:1.3;margin:48px 0 10px}
h3{font-size:19px;margin:8px 0}
.muted{color:var(--muted);font-size:14.5px}
.hidden{display:none !important}
.announce{background:var(--red);color:#fff;text-align:center;padding:10px 14px;font-size:13.5px}
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 20px}
.logo{font-weight:900;font-size:19px;color:var(--red);text-decoration:none;display:flex;align-items:center;gap:8px}
.logo img{width:28px;height:28px}
.nav{display:flex;gap:6px;flex-wrap:wrap}
.nav a,.nav button{border:0;background:transparent;padding:9px 13px;border-radius:10px;cursor:pointer;font-weight:600;font-size:14.5px;color:var(--text);font-family:inherit;text-decoration:none}
.nav a.on,.nav button.on,.nav a:hover{background:var(--red);color:#fff}
.hero{background:var(--red);color:#fff;border-radius:16px;padding:52px 40px;margin:28px 0;display:grid;grid-template-columns:1.5fr .9fr;gap:28px}
.hero h1{color:#fff}
.hero .lead{color:#fee2e2;font-size:18px}
.hero-card{background:#fff;color:var(--text);border-radius:12px;padding:24px}
.btn{background:var(--red);color:#fff;border:0;padding:13px 22px;border-radius:10px;cursor:pointer;font-weight:700;font-size:15px;font-family:inherit}
.btn:hover{background:var(--red2)}
.btn.outline{background:transparent;border:1px solid #fff;color:#fff}
.btn.light{background:#fff;color:var(--red2)}
.btn.wide{width:100%}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:20px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px;margin:18px 0}
.benefit{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.benefit .num{font-weight:900;color:var(--red);font-size:20px}
.price{font-size:32px;font-weight:900;color:var(--red)}
.perday{color:var(--red2);font-weight:700}
input,select,textarea{width:100%;padding:12px 14px;margin:6px 0 12px;border:1px solid #d1d5db;border-radius:10px;font-size:15px;font-family:inherit;background:#fff;color:var(--text)}
label{font-weight:700;font-size:14.5px}
table{width:100%;border-collapse:collapse;font-size:14.5px}
th,td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.qr{max-width:260px;width:100%;border:1px solid var(--line);border-radius:12px}
.count{font-size:32px;font-weight:900;color:var(--red);font-variant-numeric:tabular-nums}
.notice{background:#fef2f2;border:1px solid #fecaca;border-radius:12px;padding:14px 18px}
footer{background:#111827;color:#cbd5e1;padding:44px 0 28px;margin-top:56px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:28px}
footer h4{color:#fff}
footer a{color:#fca5a5;text-decoration:none}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
details{border-bottom:1px solid var(--line);padding:14px 0}
details summary{cursor:pointer;font-weight:700}
@media(max-width:900px){.grid,.hero,.steps,.footer-grid{grid-template-columns:1fr}.hero{padding:32px 22px}h1{font-size:34px}h2{font-size:26px}.topbar-inner{flex-direction:column;align-items:flex-start}}
/* v14 dashboard: sidebar ~240px, white cards, thin borders, small radius */
.dash{display:flex;min-height:100vh}
.sidebar{width:240px;flex-shrink:0;background:#fff;border-right:1px solid var(--line);padding:18px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.sidebar .logo{margin-bottom:14px}
.wallet{background:#fef2f2;border:1px solid #fecaca;border-radius:12px;padding:14px;margin:12px 0}
.wallet .bal{font-size:26px;font-weight:900;color:var(--red)}
.side-nav a,.side-nav button{display:block;width:100%;text-align:left;background:transparent;border:0;padding:10px 12px;border-radius:8px;cursor:pointer;font-family:inherit;font-size:14.5px;color:var(--text);text-decoration:none;margin:2px 0}
.side-nav a.on,.side-nav a:hover,.side-nav button:hover{background:#fef2f2;color:var(--red);font-weight:700}
.side-nav .grp{font-size:12px;letter-spacing:.06em;color:var(--muted);font-weight:700;padding:14px 12px 4px}
.dash-main{flex:1;min-width:0;padding:0 22px 40px}
.dash-top{background:#fff;border-bottom:1px solid var(--line);padding:14px 22px;display:flex;justify-content:space-between;gap:12px;align-items:center;position:sticky;top:0;z-index:20}
.crumb{color:var(--muted);font-size:14px}
.hamburger{display:none;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 12px;cursor:pointer;font-family:inherit}
.statgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.stat b{font-size:24px;color:var(--red)}
.prod-row{background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);border-radius:12px;padding:18px;margin:14px 0;display:grid;grid-template-columns:160px 1fr 220px;gap:16px;align-items:start}
.prod-row .fld label{font-size:12.5px;color:var(--muted)}
.prod-row .fld input,.prod-row .fld select{margin:2px 0 8px}
.oldprice{color:var(--muted);text-decoration:line-through;margin-left:8px;font-size:15px}
.tablewrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:12px}
.tablewrap table{min-width:640px}
.badge{display:inline-block;background:#fef2f2;color:var(--red);border:1px solid #fecaca;border-radius:6px;padding:2px 8px;font-size:12.5px;font-weight:700}
.qtybox{display:flex;gap:6px;align-items:center}
.qtybox button{width:34px;height:40px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;font-size:18px}
.qtybox input{max-width:70px;text-align:center}
@media(max-width:900px){.sidebar{position:fixed;left:-260px;top:0;z-index:50;transition:left .2s}.sidebar.open{left:0}.hamburger{display:inline-block}.dash-main{padding:0 14px 30px}.statgrid{grid-template-columns:1fr 1fr}.prod-row{grid-template-columns:1fr}.grid{grid-template-columns:1fr}}
/* v15 hiệu ứng nhẹ toàn web: không tím, không gradient tiêu đề, không neon, không kính mờ tràn lan */
@keyframes fx-fadein{from{opacity:0}to{opacity:1}}
@keyframes fx-up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes fx-toast{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes fx-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.04)}}
body{animation:fx-fadein .45s ease}
.hero{animation:fx-up .45s ease}
.fx-up{opacity:0;transform:translateY(14px);transition:opacity .4s ease,transform .4s ease,box-shadow .2s ease}
.fx-up.fx-in{opacity:1;transform:translateY(0)}
.card,.benefit,.prod-row,.stat,.hero-card{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover,.benefit:hover,.prod-row:hover,.stat:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(17,24,39,.10)}
.btn{transition:background .2s ease,transform .15s ease,box-shadow .2s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(225,29,46,.22)}
.btn:active{transform:scale(.98)}
.nav a,.side-nav a{transition:background .2s ease,color .2s ease}
.sidebar{transition:left .25s ease,transform .25s ease}
input:focus,select:focus,textarea:focus{outline:2px solid #fca5a5;border-color:var(--red);box-shadow:0 0 0 3px rgba(225,29,46,.12)}
.count.pulse{animation:fx-pulse 1s ease-in-out infinite}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#111827;color:#fff;padding:13px 20px;border-radius:12px;box-shadow:0 12px 28px rgba(0,0,0,.25);z-index:100;animation:fx-toast .3s ease;font-weight:700;max-width:92vw;text-align:center}
.toast.ok{border-left:4px solid #22c55e}
@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important}.fx-up{opacity:1;transform:none}}