/* SimpleBiz — landing mobile-first */
:root{
  /* Bảng màu chính thức SimpleBiz */
  --green:#0F9D58;        /* màu chính */
  --green-dk:#0B7C46;     /* khi di chuột / nhấn */
  --green-lt:#F0FDF4;     /* nền xanh nhạt */
  --ink:#111827;          /* chữ chính */
  --muted:#6b7280;        /* chữ phụ */
  --paper:#FFFFFF;
  --surface:#FFFFFF;
  --surface2:#F0FDF4;
  --line:#E5E7EB;
  --line2:#D1D5DB;
  --tx:#111827;
  --tx2:#4B5563;
  --tx3:#6b7280;
  --ac:#0F9D58;
  --ac-dk:#FFFFFF;
  --ac-soft:#F0FDF4;
  --gold:#0F9D58;
  --gold-soft:#F0FDF4;
  --red:#DC2626;
  --r:16px;
  --w:min(100%,520px);
  --pad:20px;
}
/* Đồng giá nên không tách hạng — mọi trang dùng chung một màu thương hiệu */
[data-tier="pro"]{ --ac:#0F9D58; --ac-dk:#FFFFFF; --ac-soft:#F0FDF4; }

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{
  margin:0;background:#F7F9F8;color:var(--tx);
  font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  font-size:15px;line-height:1.65;font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{content:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}

.wrap{position:relative;z-index:1;width:var(--w);margin:0 auto;padding:0 var(--pad)}
.pagebg{position:relative;z-index:1}

/* ---------- top bar ---------- */
.top{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);
  background:rgba(255,255,255,.94);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:10px;height:56px;padding-top:0;padding-bottom:0}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:-.02em;font-size:15px}
.logo img{width:26px;height:26px;border-radius:7px;display:block}
.top .sp{flex:1}
.tbtn{display:inline-flex;align-items:center;height:38px;font-size:12.5px;font-weight:600;padding:0 14px;border-radius:999px;
  border:1px solid var(--line2);color:var(--tx2);white-space:nowrap;flex:none}
.logo{white-space:nowrap;flex:none}
.tbtn.acc{background:var(--ac);color:var(--ac-dk);border-color:transparent}

/* ---------- generic ---------- */
section{padding:44px 0}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--tx3);margin:0 0 12px}
.eyebrow::before{content:'';width:16px;height:1px;background:var(--ac)}
h1{font-size:clamp(28px,8vw,38px);line-height:1.14;letter-spacing:-.03em;font-weight:800;margin:0 0 14px}
h2{font-size:clamp(22px,6vw,27px);line-height:1.2;letter-spacing:-.025em;font-weight:700;margin:0 0 10px}
h3{font-size:16px;line-height:1.35;letter-spacing:-.01em;font-weight:600;margin:0 0 6px}
p{margin:0 0 14px;color:var(--tx2)}
.lead{font-size:16px;color:var(--tx2)}
.small{font-size:13px;color:var(--tx3)}
.hl{color:var(--ac)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- hero ---------- */
.hero{padding-top:34px;padding-bottom:8px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;
  padding:5px 11px;border-radius:999px;background:var(--ac-soft);color:var(--ac);
  border:1px solid rgba(255,255,255,.08);margin-bottom:16px}
.hero p.lead{font-size:16.5px;margin-bottom:20px}
.pricebox{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:0 0 18px}
.price{font-size:30px;font-weight:800;letter-spacing:-.03em}
.was{font-size:15px;color:var(--tx3);text-decoration:line-through}
.save{font-size:11.5px;font-weight:700;color:var(--ac);background:var(--ac-soft);
  padding:3px 9px;border-radius:999px}
.cta{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;height:52px;
  border-radius:14px;font-weight:700;font-size:15.5px;letter-spacing:-.01em;transition:.16s}
.btn:active{transform:scale(.985)}
.btn-a{background:var(--ac);color:var(--ac-dk)}
.btn-b{background:var(--ac-soft);border:1px solid var(--ac);color:var(--green-dk)}
.btn-c{border:1px solid var(--line2);color:var(--tx)}

/* ---------- thanh mở bảng demo ---------- */
#demo{padding-top:0}
.demobar{display:flex;align-items:center;gap:13px;padding:15px 16px;
  border:1px solid var(--ac);border-radius:16px;background:var(--ac-soft)}
.demobar .ic{flex:none;width:38px;height:38px;border-radius:11px;background:var(--ac);
  color:#fff;display:grid;place-items:center;font-size:17px}
.demobar .tx{flex:1;min-width:0;display:block}
.demobar .tx b{display:block;font-size:15px;letter-spacing:-.01em;color:var(--green-dk)}
.demobar .tx em{display:block;font-style:normal;font-size:12.5px;color:var(--tx3);
  margin-top:3px;line-height:1.45}
.demobar .go{flex:none;font-weight:700;font-size:13.5px;color:var(--green-dk)}
.demobar:active{transform:scale(.99)}
.trust{display:flex;flex-wrap:wrap;gap:7px}
.trust span{font-size:11.5px;color:var(--tx3);border:1px solid var(--line);
  padding:5px 10px;border-radius:999px}

/* ---------- stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:26px}
.stats div{background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:13px 10px;text-align:center}
.stats b{display:block;font-size:19px;font-weight:800;letter-spacing:-.03em}
.stats small{font-size:10.5px;color:var(--tx3);line-height:1.3;display:block;margin-top:3px}

/* ---------- pains ---------- */
.pain{border:1px solid var(--line);border-left:3px solid var(--red);border-radius:var(--r);
  padding:16px;background:#fff;margin-bottom:10px}
.pain b{display:block;font-size:19px;font-weight:800;color:var(--red);letter-spacing:-.02em;margin-bottom:4px}
.pain p{margin:0;font-size:14px}

/* ---------- video ---------- */
.video{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);
  background:#000;aspect-ratio:16/10}
.video iframe{width:100%;height:100%;border:0;display:block}
.vposter{position:absolute;inset:0;width:100%;height:100%!important;object-fit:cover;object-position:top;opacity:.42}
.vplay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:10px;background:linear-gradient(180deg,rgba(17,24,39,.18),rgba(17,24,39,.70))}
.vplay i{width:60px;height:60px;border-radius:50%;background:var(--ac);color:var(--ac-dk);
  display:grid;place-items:center;font-size:20px;font-style:normal;
  }
.vplay span{font-size:13px;font-weight:600;color:#fff}

/* ---------- shots ---------- */
.shot{margin-bottom:26px}
.shot .head{display:flex;gap:10px;align-items:flex-start;margin-bottom:11px}
.shot .head b{flex:1;font-size:16.5px;font-weight:700;letter-spacing:-.02em;line-height:1.3}
.tag{font-size:10.5px;font-weight:600;color:var(--tx3);border:1px solid var(--line);
  padding:4px 8px;border-radius:8px;white-space:nowrap}
.shotimg{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:#fff}
.shotimg img{width:100%;height:auto}
.zoomhint{position:absolute;right:8px;bottom:8px;font-size:10.5px;font-weight:600;
  background:rgba(17,24,39,.86);color:#fff;padding:5px 9px;border-radius:8px;
  border:1px solid var(--line2);backdrop-filter:blur(6px)}
.notes{list-style:none;margin:12px 0 0;padding:0;counter-reset:n}
.notes li{position:relative;padding-left:32px;margin-bottom:9px;font-size:13.8px;
  color:var(--tx2);line-height:1.55}
.notes li::before{counter-increment:n;content:counter(n);position:absolute;left:0;top:1px;
  width:22px;height:22px;border-radius:50%;background:var(--ac);color:var(--ac-dk);
  font-size:11.5px;font-weight:800;display:grid;place-items:center}
.zoomcard{margin-top:14px;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:#fff}
.zoomcard img{width:100%;height:auto;background:#fff}
.zoomcard p{margin:0;padding:11px 13px;font-size:13px;color:var(--tx2);
  border-top:1px solid var(--line)}

/* ---------- feature list ---------- */
.feat{border-top:1px solid var(--line);padding:15px 0}
.feat:last-child{border-bottom:1px solid var(--line)}
.feat b{display:block;font-size:15px;font-weight:650;margin-bottom:3px;letter-spacing:-.01em}
.feat span{display:block;font-size:13.5px;color:var(--tx2);line-height:1.55}
.feat em{font-style:normal;font-size:11px;color:var(--ac);font-weight:600;
  display:inline-block;margin-bottom:4px;letter-spacing:.04em;text-transform:uppercase}

/* ---------- spec ---------- */
.spec{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden}
.spec div{display:flex;gap:12px;padding:13px 15px;background:#fff;font-size:13.5px}
.spec div b{width:104px;flex:none;color:var(--tx3);font-weight:500}
.spec div span{flex:1;color:var(--tx)}
.sheets{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.sheets span{font-size:11.5px;color:var(--tx2);border:1px solid var(--line);
  padding:5px 9px;border-radius:8px;background:#fff}

/* ---------- pay ---------- */
.pay{border:1px solid var(--line2);border-radius:22px;padding:20px;background:#fff}
.qrbox{background:#fff;border-radius:16px;padding:12px;display:grid;place-items:center;margin:14px 0}
.qrbox img{width:100%;max-width:250px}
.qrwarn{background:#FEF2F2;border:1px solid rgba(220,38,38,.3);
  border-radius:14px;padding:14px;font-size:13px;color:#991B1B}
.field{margin-bottom:10px}
.field label{display:block;font-size:11.5px;color:var(--tx3);margin-bottom:5px;font-weight:600}
.field .row{display:flex;gap:8px;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:12px;padding:11px 13px}
.field .row input{flex:1;background:none;border:0;color:var(--tx);font:inherit;
  font-size:14px;outline:none;min-width:0}
.field .row .val{flex:1;font-size:14px;font-weight:600;word-break:break-all}
.copy{font-size:11.5px;font-weight:700;color:var(--ac);border:1px solid var(--line2);
  padding:0 12px;height:38px;border-radius:10px;white-space:nowrap}
.copy.ok{background:var(--ac);color:var(--ac-dk);border-color:transparent}
.steps{list-style:none;padding:0;margin:16px 0 0;counter-reset:s}
.steps li{position:relative;padding-left:28px;font-size:13.3px;color:var(--tx2);margin-bottom:8px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:2px;
  width:19px;height:19px;border-radius:6px;background:var(--green-lt);border:1px solid var(--line);
  font-size:10.5px;font-weight:700;display:grid;place-items:center;color:var(--tx2)}

/* ---------- faq ---------- */
details{border-bottom:1px solid var(--line)}
details summary{list-style:none;cursor:pointer;padding:15px 30px 15px 0;position:relative;
  font-size:14.5px;font-weight:600;letter-spacing:-.01em}
details summary::-webkit-details-marker{display:none}
details summary::after{content:'+';position:absolute;right:2px;top:13px;font-size:19px;
  color:var(--tx3);font-weight:400;transition:.2s}
details[open] summary::after{transform:rotate(45deg);color:var(--ac)}
details p{font-size:13.6px;padding:0 0 15px;margin:0}

/* ---------- product cards (index) ---------- */
.plist{display:grid;gap:12px}
.pcard{display:block;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:#fff;transition:.18s}
.pcard:active{transform:scale(.99)}
.pcard .thumb{background:#fff;border-bottom:1px solid var(--line);aspect-ratio:16/8.4;overflow:hidden}
.pcard .thumb img{width:100%;height:100%!important;object-fit:cover;object-position:top left}
.pcard .body{padding:15px}
.pcard .body .badge{font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--ac);background:var(--ac-soft);padding:3px 8px;border-radius:6px;display:inline-block;
  margin-bottom:8px}
.pcard .body .badge.gold{color:var(--gold);background:var(--gold-soft)}
.pcard h3{margin-bottom:5px;font-size:17px;font-weight:700}
.pcard p{font-size:13.3px;margin:0 0 12px}
.pcard .foot{display:flex;align-items:center;gap:9px}
.pcard .foot b{font-size:18px;font-weight:800;letter-spacing:-.02em}
.pcard .foot s{font-size:12.5px;color:var(--tx3)}
.pcard .foot .go{margin-left:auto;font-size:12.5px;font-weight:700;color:var(--ac)}

/* ---------- sticky bar ---------- */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:45;
  background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-top:1px solid var(--line);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  transform:translateY(110%);transition:transform .28s cubic-bezier(.2,.8,.2,1)}
.sticky.on{transform:none}
.sticky .wrap{display:flex;align-items:center;gap:10px}
.sticky .pr{flex:1;min-width:0}
.sticky .pr b{display:block;font-size:17px;font-weight:800;letter-spacing:-.02em;line-height:1.15}
.sticky .pr small{font-size:11px;color:var(--tx3)}
.sticky a.btn{flex:none;width:auto;padding:0 20px;height:46px;font-size:14.5px}
body{padding-bottom:78px}

/* ---------- lightbox ---------- */
.lb{position:fixed;inset:0;z-index:90;background:#0B1220;display:none;
  overflow:auto;-webkit-overflow-scrolling:touch;padding:52px 0 44px}
.lb.on{display:block}
.lb img{max-width:none;width:auto;height:auto;min-width:100%;display:block;background:#fff}
.lb .x{position:fixed;top:14px;right:14px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);color:#fff;
  display:grid;place-items:center;font-size:18px}
.lb .hint{position:fixed;left:0;right:0;bottom:0;text-align:center;font-size:12px;color:#D1D5DB;
  background:rgba(17,24,39,.95);padding:12px 16px;backdrop-filter:blur(8px)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:28px 0 34px;margin-top:20px}
footer p{font-size:12.5px;color:var(--tx3);margin-bottom:8px}
.flinks{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.flinks a{font-size:12.5px;color:var(--tx2);border:1px solid var(--line);
  padding:7px 12px;border-radius:10px}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .5s,transform .5s}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- desktop: giữ khung điện thoại ---------- */
@media (min-width:760px){
  body{background:#EEF2F0}
  .pagebg,.top,.sticky{max-width:560px;margin-left:auto;margin-right:auto}
  .pagebg{border-left:1px solid var(--line);border-right:1px solid var(--line);
    background:#F7F9F8;min-height:100vh}
  .top{left:0;right:0}
  .sticky{left:50%;transform:translate(-50%,110%);width:560px}
  .sticky.on{transform:translate(-50%,0)}
}

/* ---------- lời nhắn cà phê ---------- */
.coffee{background:var(--green-lt);border:1px solid #BBF7D0;border-left:3px solid var(--green);
  border-radius:14px;padding:16px 18px;margin:0 0 18px}
.coffee p{margin:0;font-size:14.5px;line-height:1.7;color:#14532D}
.coffee .who{display:flex;align-items:center;gap:9px;margin-top:12px;font-size:12.5px;color:#3F6B52}
.coffee .who img{width:26px;height:26px;border-radius:7px}

/* ---------- luồng nhập thông tin → QR → xong ---------- */
.field input::placeholder{color:#9CA3AF}
.formErr{background:#FEF2F2;border:1px solid #FCA5A5;color:#991B1B;border-radius:10px;
  padding:10px 12px;font-size:13px;margin:0 0 10px}
.hello{background:var(--green-lt);border:1px solid #BBF7D0;border-radius:12px;
  padding:12px 14px;margin:0 0 14px;font-size:13.5px;color:#14532D}
.hello b{color:#0B7C46}
.waiting{display:flex;align-items:center;gap:10px;background:#FFFBEB;border:1px solid #FDE68A;
  border-radius:12px;padding:12px 14px;margin:14px 0 0;font-size:13.5px;color:#92400E}
.waiting i{width:9px;height:9px;border-radius:50%;background:#F59E0B;flex:none;
  animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}
.doneCard{text-align:center;padding:6px 0 2px}
.doneCard .tick{width:60px;height:60px;border-radius:50%;background:var(--green);color:#fff;
  display:grid;place-items:center;font-size:28px;margin:0 auto 14px}
.doneCard h3{font-size:19px;margin-bottom:8px}
.doneCard p{font-size:14px}
.linkbtn{background:none;border:0;color:var(--tx3);font-size:12.5px;text-decoration:underline;
  padding:10px 0 0;display:block;margin:0 auto}
.btn[disabled]{opacity:.55;pointer-events:none}