/* V9 Tech — Giới thiệu page (page 421). Scoped under #v9ab / body.v9ab-on. */

#v9ab{
  --blue:#0871B6;
  --blue-deep:#065a92;
  --cyan:#2CABE1;
  --ink:#0f2a43;
  --muted:#51677e;
  --line:#dbe7f1;
  --soft:#f2f8fc;
  --white:#fff;
  font-family:inherit;
  color:var(--ink);
  overflow-x:hidden;
}
#v9ab *,#v9ab *::before,#v9ab *::after{box-sizing:border-box}
#v9ab .v9ab-container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- type ---------- */
#v9ab .v9ab-h2{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.25;
  font-weight:800;
  color:var(--ink);
  text-align:center;
  margin:0 0 12px;
  text-transform:none;
}
#v9ab .v9ab-h2--left{text-align:left}
#v9ab .v9ab-h2--light{color:var(--white);text-align:left;margin:0 0 6px}
#v9ab .v9ab-sub{
  text-align:center;
  color:var(--muted);
  font-size:16px;
  line-height:1.6;
  max-width:640px;
  margin:0 auto 34px;
}
#v9ab p{color:var(--ink)}

/* ---------- buttons ---------- */
#v9ab .v9ab-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:50px;
  padding:12px 28px;
  border-radius:999px;
  font-weight:700;
  font-size:16px;
  line-height:1.2;
  text-decoration:none;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
#v9ab .v9ab-btn:hover{transform:translateY(-2px)}
#v9ab .v9ab-btn--primary{
  background:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%);
  color:var(--white);
  box-shadow:0 10px 24px rgba(8,113,182,.32);
}
#v9ab .v9ab-btn--primary:hover{color:var(--white);box-shadow:0 14px 30px rgba(8,113,182,.42)}
#v9ab .v9ab-btn--ghost{background:var(--white);color:var(--blue);border:2px solid var(--blue)}
#v9ab .v9ab-btn--ghost:hover{background:var(--soft);color:var(--blue-deep)}
#v9ab .v9ab-btn--white{background:var(--white);color:var(--blue);box-shadow:0 8px 22px rgba(3,32,55,.25)}
#v9ab .v9ab-btn--white:hover{color:var(--blue-deep)}
#v9ab .v9ab-btn--outline-white{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,.75)}
#v9ab .v9ab-btn--outline-white:hover{background:rgba(255,255,255,.12);color:var(--white)}

/* ---------- hero ---------- */
#v9ab .v9ab-hero{
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(44,171,225,.28), transparent 60%),
    radial-gradient(700px 380px at 8% 110%, rgba(44,171,225,.18), transparent 55%),
    linear-gradient(135deg,#eaf5fc 0%,#f7fbfe 55%,#eef7fd 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 44px;
}
#v9ab .v9ab-hero__grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:44px;
  align-items:center;
}
#v9ab .v9ab-eyebrow{
  display:inline-block;
  background:rgba(8,113,182,.10);
  color:var(--blue);
  border:1px solid rgba(8,113,182,.22);
  border-radius:999px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
  padding:7px 16px;
  margin:0 0 16px;
}
#v9ab .v9ab-hero__title{
  font-size:clamp(28px,3.8vw,42px);
  line-height:1.2;
  font-weight:800;
  color:var(--ink);
  margin:0 0 14px;
}
#v9ab .v9ab-hero__brand{color:var(--blue);white-space:nowrap}
#v9ab .v9ab-hero__lead{
  font-size:clamp(16px,1.8vw,18px);
  line-height:1.65;
  color:var(--muted);
  margin:0 0 24px;
}
#v9ab .v9ab-hero__lead strong{color:var(--blue);font-weight:800}
#v9ab .v9ab-hero__cta{display:flex;gap:14px;flex-wrap:wrap}
#v9ab .v9ab-hero__media img{
  width:100%;
  height:auto;
  display:block;
  border-radius:20px;
  box-shadow:0 24px 54px rgba(8,113,182,.22);
  border:6px solid var(--white);
}

/* stats strip */
#v9ab .v9ab-stats{
  list-style:none;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin:40px 0 0;
  padding:0;
}
#v9ab .v9ab-stats li{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px 16px;
  text-align:center;
  box-shadow:0 8px 22px rgba(8,113,182,.08);
}
#v9ab .v9ab-stats strong{
  display:block;
  font-size:clamp(20px,2.4vw,28px);
  font-weight:800;
  color:var(--blue);
  line-height:1.2;
  margin-bottom:4px;
}
#v9ab .v9ab-stats span{font-size:13.5px;color:var(--muted);line-height:1.45;display:block}

/* ---------- sections ---------- */
#v9ab .v9ab-section{padding:64px 0}
#v9ab .v9ab-section--soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- split rows (text + photo) ---------- */
#v9ab .v9ab-split{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:44px;
  align-items:center;
}
#v9ab .v9ab-split--rev{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr)}
#v9ab .v9ab-split--rev .v9ab-split__text{order:2}
#v9ab .v9ab-split--rev .v9ab-split__media{order:1}
#v9ab .v9ab-split__media img{
  width:100%;
  height:auto;
  display:block;
  border-radius:18px;
  box-shadow:0 18px 44px rgba(8,113,182,.16);
}
#v9ab .v9ab-split__text p{font-size:16px;line-height:1.7;margin:0 0 14px}

/* letter */
#v9ab .v9ab-letter{
  background:var(--white);
  border:1px solid var(--line);
  border-left:4px solid var(--blue);
  border-radius:14px;
  padding:26px 26px 18px;
  box-shadow:0 10px 28px rgba(8,113,182,.08);
}
#v9ab .v9ab-letter p{font-size:15.5px;line-height:1.7;margin:0 0 13px}
#v9ab .v9ab-letter__sign{text-align:right;margin-top:4px}

/* ---------- generic cards ---------- */
#v9ab .v9ab-grid{display:grid;gap:20px}
#v9ab .v9ab-grid--2{grid-template-columns:repeat(2,1fr)}
#v9ab .v9ab-grid--4{grid-template-columns:repeat(4,1fr)}
#v9ab .v9ab-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:18px;
  padding:26px 22px;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
#v9ab .v9ab-card:hover{
  transform:translateY(-4px);
  box-shadow:0 16px 34px rgba(8,113,182,.12);
  border-color:rgba(44,171,225,.5);
}
#v9ab .v9ab-card__title{
  font-size:17px;
  font-weight:800;
  color:var(--ink);
  margin:0 0 8px;
  line-height:1.35;
}

/* icon badge — same white-plate language as the landing */
#v9ab .v9lp-card__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:64px;
  height:64px;
  border-radius:18px;
  background:var(--white);
  border:1px solid rgba(8,113,182,.18);
  box-shadow:0 8px 20px rgba(8,113,182,.12), inset 0 0 0 1px rgba(255,255,255,.6);
  color:var(--blue);
  margin-bottom:14px;
}
#v9ab .v9lp-card__icon svg{width:32px;height:32px}
#v9ab .v9lp-ico--fast{color:#b45309}
#v9ab .v9lp-ico--monitor{color:#7c3aed}
#v9ab .v9lp-ico--api{color:#0871B6}
#v9ab .v9lp-ico--central{color:#0f766e}
#v9ab .v9lp-ico--carrier{color:#7c3aed}
#v9ab .v9lp-ico--support{color:#b45309}
#v9ab .v9ab-ico--pin{color:#dc2626}

/* vision / mission */
#v9ab .v9ab-vm{text-align:center;padding:32px 28px}
#v9ab .v9ab-vm .v9lp-card__icon{margin-left:auto;margin-right:auto}
#v9ab .v9ab-vm p{font-size:15.5px;line-height:1.7;color:var(--muted);margin:0;max-width:520px;margin-inline:auto}
#v9ab .v9ab-vm .v9ab-card__title{font-size:20px}

/* business fields */
#v9ab .v9ab-field__list{list-style:none;margin:0;padding:0}
#v9ab .v9ab-field__list li{
  position:relative;
  padding:6px 0 6px 22px;
  font-size:14.5px;
  line-height:1.5;
  color:var(--muted);
  border-bottom:1px dashed var(--line);
}
#v9ab .v9ab-field__list li:last-child{border-bottom:0}
#v9ab .v9ab-field__list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:13px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
}
#v9ab .v9ab-fields__more{text-align:center;margin:26px 0 0;font-size:15.5px;color:var(--muted)}
#v9ab .v9ab-fields__more a{color:var(--blue);font-weight:700;text-decoration:none}
#v9ab .v9ab-fields__more a:hover{color:var(--blue-deep);text-decoration:underline}

/* offices */
#v9ab .v9ab-grid--offices{max-width:900px;margin:0 auto}
#v9ab .v9ab-office p{font-size:15px;line-height:1.6;color:var(--muted);margin:0 0 8px}
#v9ab .v9ab-office__contact a{color:var(--blue);font-weight:700;text-decoration:none}
#v9ab .v9ab-office__contact a:hover{text-decoration:underline}

/* certificates */
#v9ab .v9ab-cert{text-align:center}
#v9ab .v9ab-cert__img{display:flex;align-items:center;justify-content:center;height:96px;margin-bottom:14px}
#v9ab .v9ab-cert__img img{max-height:96px;width:auto;height:auto;object-fit:contain}
#v9ab .v9ab-cert .v9ab-card__title{font-size:15.5px}
#v9ab .v9ab-cert__desc{font-size:13.5px;color:var(--muted);line-height:1.55;margin:0}

/* customer logo strip */
#v9ab .v9ab-logos{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:16px;
  align-items:center;
  margin-top:28px;
}
#v9ab .v9ab-logos__item{
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 14px;
  height:96px;
  transition:transform .18s ease, box-shadow .18s ease;
}
#v9ab .v9ab-logos__item{min-width:0}
#v9ab .v9ab-logos__item:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(8,113,182,.12)}
#v9ab .v9ab-logos__item img{max-height:60px;max-width:min(140px,100%);width:auto;height:auto;object-fit:contain}

/* ---------- CTA band ---------- */
#v9ab .v9ab-cta{
  background:
    radial-gradient(700px 300px at 90% -20%, rgba(44,171,225,.4), transparent 60%),
    linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 55%,#1590cf 100%);
  padding:52px 0;
}
#v9ab .v9ab-cta__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
#v9ab .v9ab-cta__sub{color:rgba(255,255,255,.88);font-size:16px;line-height:1.55;margin:0}
#v9ab .v9ab-cta__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  #v9ab .v9ab-grid--4{grid-template-columns:repeat(2,1fr)}
  #v9ab .v9ab-logos{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:849px){
  #v9ab .v9ab-section{padding:48px 0}
  #v9ab .v9ab-hero{padding:44px 0 36px}
  #v9ab .v9ab-hero__grid,#v9ab .v9ab-split,#v9ab .v9ab-split--rev{grid-template-columns:1fr;gap:26px}
  #v9ab .v9ab-split--rev .v9ab-split__text{order:1}
  #v9ab .v9ab-split--rev .v9ab-split__media{order:2}
  #v9ab .v9ab-stats{grid-template-columns:repeat(2,1fr);margin-top:30px}
  #v9ab .v9ab-grid--2{grid-template-columns:1fr}
  #v9ab .v9ab-logos{grid-template-columns:repeat(3,1fr)}
  #v9ab .v9ab-cta__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:549px){
  #v9ab .v9ab-grid{gap:14px}
  #v9ab .v9ab-grid--4{grid-template-columns:1fr}
  #v9ab .v9ab-stats{gap:10px}
  #v9ab .v9ab-stats li{padding:14px 10px}
  #v9ab .v9ab-logos{grid-template-columns:repeat(2,1fr);gap:10px}
  #v9ab .v9ab-logos__item{height:80px}
  #v9ab .v9ab-btn{width:100%;max-width:340px}
  #v9ab .v9ab-hero__cta{flex-direction:column}
  #v9ab .v9ab-cta__actions{width:100%;flex-direction:column}
  #v9ab .v9ab-cta__actions .v9ab-btn{width:100%;max-width:none}
  #v9ab .v9ab-letter{padding:20px 16px 12px}
}

/* motion preference */
@media (prefers-reduced-motion:reduce){
  #v9ab .v9ab-btn,#v9ab .v9ab-card,#v9ab .v9ab-logos__item{transition:none}
}