*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
:root{
  --azure:#22A0FE;--cobalt:#1452AB;--dark:#282828;--ink2:#4A5160;
  --lblue:#D2F3FF;--bblue:#A4E3FF;--soft:#F4F9FE;--line:#E4F1FB;--white:#fff;
}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--dark);background:#EAF3FB;line-height:1.5;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.page{max-width:520px;margin:0 auto;background:#fff;min-height:100vh;padding-bottom:92px;overflow:hidden;position:relative}
.pad{padding:0 20px}
/* offer bar */
.offerbar{position:sticky;top:0;z-index:40;background:var(--dark);color:#fff;text-align:center;
  font-size:13.8px;font-weight:700;padding:10px 14px;letter-spacing:.1px}
.offerbar b{color:var(--azure)}
/* header */
.hdr{display:flex;align-items:center;justify-content:space-between;padding:15px 0 8px}
.hdr .lg{height:38px;width:auto}
.hdr .tag{font-size:12px;font-weight:700;color:var(--cobalt);letter-spacing:.2px;text-align:right;line-height:1.2}
/* hero */
.hero{padding:12px 0 4px}
h1{font-size:27px;line-height:1.22;font-weight:800;letter-spacing:-.4px;margin-bottom:12px;text-wrap:pretty}
h1 span{color:var(--cobalt)}
.svcline{font-size:15px;font-weight:700;color:var(--cobalt);margin-bottom:8px;text-wrap:pretty}
.hsub{font-size:14.5px;color:var(--ink2);margin-bottom:12px;text-wrap:pretty}
.noprice{display:inline-block;font-size:14px;font-weight:800;color:#fff;background:var(--azure);
  padding:8px 13px;border-radius:9px;letter-spacing:.3px;margin-bottom:15px;box-shadow:0 4px 12px rgba(34,160,254,.3)}
.heroimg{border-radius:22px;overflow:hidden;margin:2px 0 18px;box-shadow:0 12px 30px rgba(20,82,171,.18)}
.heroimg img{width:100%}
/* CTA */
.cta{display:block;width:100%;text-align:center;background:var(--azure);color:#fff;font-weight:800;
  font-size:17px;padding:17px 16px;border-radius:14px;box-shadow:0 8px 20px rgba(34,160,254,.4);
  letter-spacing:.2px;transition:transform .08s,background .15s;text-wrap:balance}
.cta:hover{background:var(--cobalt)}
.cta:active{transform:scale(.985)}
.cta.sm{font-size:16px;padding:15px}
.micro{text-align:center;font-size:13px;color:var(--ink2);margin-top:11px}
/* trust */
.trust{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 4px}
.tcard{background:var(--lblue);border-radius:14px;padding:14px 13px;display:flex;gap:9px;align-items:flex-start}
.tcard .ck{flex:0 0 21px;height:21px;border-radius:50%;background:var(--cobalt);color:#fff;
  display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:1px}
.tcard span.t{font-size:13.3px;font-weight:700;line-height:1.35}
/* section */
section{padding:30px 0 2px}
.eyebrow{font-size:12px;font-weight:800;color:var(--azure);text-transform:uppercase;letter-spacing:.8px;margin-bottom:8px}
h2{font-size:21px;font-weight:800;letter-spacing:-.3px;margin-bottom:15px;text-wrap:pretty}
/* popular services */
.pop{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pcard{border:1.5px solid var(--line);border-radius:18px;padding:16px 15px;background:#fff;
  transition:box-shadow .15s,transform .15s}
.pcard:hover{box-shadow:0 8px 20px rgba(20,82,171,.1);transform:translateY(-2px)}
.picon{width:58px;height:58px;border-radius:15px;background:var(--soft);display:grid;place-items:center;margin-bottom:11px}
.pcard h3{font-size:14.5px;font-weight:800;line-height:1.3}
/* services list */
.slist{display:grid;gap:10px}
.sitem{border-left:4px solid var(--azure);background:var(--soft);border-radius:0 14px 14px 0;
  padding:14px 16px;font-size:14.5px;font-weight:600;color:var(--dark);text-wrap:pretty}
/* steps */
.step{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:none}
.step .n{flex:0 0 36px;height:36px;border-radius:50%;background:var(--azure);color:#fff;font-weight:800;
  display:grid;place-items:center;font-size:16px}
.step h3{font-size:15.5px;font-weight:800;margin-bottom:3px}
.step p{font-size:13.5px;color:var(--ink2);text-wrap:pretty}
.step p b{color:var(--cobalt)}
/* offer block */
.offerbox{background:linear-gradient(135deg,var(--cobalt),#0e3d80);color:#fff;border-radius:22px;
  padding:28px 22px;text-align:center;box-shadow:0 12px 30px rgba(20,82,171,.28);position:relative;overflow:hidden}
.offerbox .big{font-size:24px;font-weight:800;line-height:1.25;margin-bottom:18px;text-wrap:balance;position:relative}
.offerbox .big b{color:var(--bblue)}
.offerbox .cta{background:var(--azure)}
.offerbox .cta:hover{background:#fff;color:var(--cobalt)}
/* why */
.whyhead{display:flex;gap:14px;align-items:center;background:var(--dark);border-radius:18px;padding:14px 16px;margin-bottom:16px}
.whyhead img{flex:0 0 72px;width:72px;height:96px;object-fit:cover;object-position:top center;border-radius:12px;background:#fff}
.whyhead .t{font-size:16px;font-weight:800;color:#fff;line-height:1.3;letter-spacing:.2px;text-wrap:pretty}
.why{list-style:none;display:grid;gap:13px}
.why li{display:flex;gap:11px;font-size:14.3px;text-wrap:pretty}
.why li .ck{flex:0 0 22px;height:22px;border-radius:50%;background:var(--lblue);color:var(--cobalt);
  display:grid;place-items:center;font-weight:800;font-size:13px;margin-top:1px}
.why li b{font-weight:800}
/* faq */
.faq details{border:1.5px solid var(--line);border-radius:14px;padding:2px 16px;margin-bottom:10px;background:#fff}
.faq summary{font-weight:700;font-size:14.5px;padding:14px 0;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pl{color:var(--azure);font-weight:800;font-size:22px;line-height:1;transition:transform .2s}
.faq details[open] summary .pl{transform:rotate(45deg)}
.faq p{font-size:13.8px;color:var(--ink2);padding:0 0 14px;text-wrap:pretty}
.faq p+p{padding-top:0}
.faq b{color:var(--cobalt)}
/* final */
.final{text-align:center;padding:34px 0 24px}
.final img{width:56px;height:auto;margin:0 auto 12px}
.final .tag{font-size:14px;font-weight:700;color:var(--cobalt);margin-bottom:16px}
/* footer */
footer{background:var(--dark);color:#AEB6C2;padding:26px 20px 30px;font-size:13px}
footer .flg{height:30px;width:auto;margin-bottom:8px}
footer .ftag{font-size:12px;font-weight:700;color:var(--azure);margin-bottom:15px}
footer .r{margin-bottom:8px}
footer .r b{color:#fff}
footer a{color:var(--azure)}
/* dock */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);
  padding:10px 16px;box-shadow:0 -6px 20px rgba(20,82,171,.12)}
.dockin{max-width:520px;margin:0 auto;display:flex;gap:10px}
.dock .call{flex:0 0 52px;display:grid;place-items:center;border:1.6px solid var(--azure);border-radius:13px;
  color:var(--cobalt);font-size:20px;transition:background .15s}
.dock .call:hover{background:var(--lblue)}
.dock .cta{flex:1;font-size:15.5px;padding:15px 10px;box-shadow:none}
@media(max-width:380px){h1{font-size:24px}h2{font-size:19px}}
/* template additions */
.hdr .tag{max-width:76px}
.pcard .picon img{width:52px;height:52px;object-fit:contain}
.dock .call.zalo{border-color:#0068FF}
.dock .call svg{display:block}
.preview-bar{background:#F59F00;color:#fff;text-align:center;font-size:13px;font-weight:800;padding:8px 12px}
/* responsive: everything above is the phone layout and stays the base — these two
   steps only widen it, so nothing changes below 768px */
@media(min-width:768px){
  .page{max-width:720px}
  .pad{padding:0 32px}
  .dockin{max-width:720px}
  section,.hero{padding-top:38px}
  h1{font-size:32px}
  h2{font-size:24px;margin-bottom:18px}
  .hsub{font-size:15.5px}
  .hdr .lg{height:44px}
  .hdr .tag{max-width:none;font-size:13px}
  /* .pop stays 2-up here on purpose: the default content has 4 services, and 3 columns
     would leave one orphan on its own row. */
  .slist{grid-template-columns:1fr 1fr;gap:12px}
  .why{grid-template-columns:1fr 1fr;column-gap:26px}
  .offerbox{padding:32px 28px}
  .offerbox .big{font-size:27px}
  footer{padding-left:32px;padding-right:32px}
}
@media(min-width:1024px){
  .page{max-width:1040px}
  .pad{padding:0 44px}
  .dockin{max-width:760px}
  section,.hero{padding-top:52px}
  h1{font-size:38px}
  h2{font-size:27px;margin-bottom:22px}
  footer{padding-left:44px;padding-right:44px}
  /* Hero side by side. Two rows only — lead and actions — so the taller image cannot
     push the copy lines apart; the pair hugs the middle instead. */
  .hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,42%);column-gap:48px;
    align-content:center;padding-bottom:16px}
  .hero-lead{grid-column:1;grid-row:1;align-self:end}
  .hero-actions{grid-column:1;grid-row:2;align-self:start;padding-top:18px}
  /* aspect-ratio, not max-height: the box needs a definite height or the image's
     height:100% resolves to auto and object-fit has nothing to fit — the overflow
     would then crop the bottom off a portrait upload instead of centring it. */
  .hero .heroimg{grid-column:2;grid-row:1/span 2;align-self:center;margin:0;aspect-ratio:4/5}
  .hero .heroimg img{width:100%;height:100%;object-fit:cover}
  .hero .cta{width:auto;display:inline-block;padding:17px 40px}
  .hero .micro{text-align:left}
  .hero:not(:has(.heroimg)){display:block}
  .trust{grid-template-columns:repeat(4,1fr)}
  .pop{grid-template-columns:repeat(4,1fr)}
  /* The steps have no wrapper of their own, so :has() grids the section holding them
     and lets the heading span it. Browsers without :has() just keep them stacked. */
  /* row-gap matters: the template allows up to 5 steps, so rows two and three have to
     breathe now that the separators are gone. */
  section:has(>.step){display:grid;grid-template-columns:repeat(3,1fr);column-gap:28px;row-gap:22px}
  section:has(>.step)>.eyebrow,section:has(>.step)>h2{grid-column:1/-1}
  .step{border-bottom:none;padding:10px 0 0}
  /* Reading blocks stay narrow instead of stretching the full 1040px. */
  .slist,.offerbox,.faq details{max-width:860px;margin-left:auto;margin-right:auto}
  .final{max-width:640px;margin:0 auto}
}