/* ===== Tokens ===== */
:root{
  --navy-950:#0b0f1a;
  --navy-900:#0f172a;
  --navy-800:#141c33;
  --navy-700:#1c2742;
  --blue:#2563eb;
  --blue-light:#4f8bff;
  --indigo:#4f46e5;
  --amber:#f59e0b;
  --amber-dark:#d97706;
  --pink:#ec4899;
  --green:#22c55e;
  --teal:#14b8a6;
  --purple:#8b5cf6;
  --red:#ef4444;
  --ink:#0f172a;
  --ink-soft:#475569;
  --ink-faint:#64748b;
  --bg:#ffffff;
  --bg-soft:#f6f8fc;
  --line:#e6eaf2;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 2px 10px rgba(15,23,42,.06);
  --shadow-md:0 12px 30px rgba(15,23,42,.10);
  --shadow-lg:0 24px 60px rgba(15,23,42,.16);
  --container:1180px;
  --ff:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--ff);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
button{font-family:inherit;border:none;background:none;cursor:pointer;}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.text-gradient{
  background:linear-gradient(90deg,var(--blue) 0%, var(--indigo) 50%, var(--pink) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--blue);
  margin-bottom:12px;
}
h1,h2,h3,h4{font-weight:800;line-height:1.2;color:var(--ink);}
h1{font-size:clamp(32px,4.5vw,54px);}
h2{font-size:clamp(26px,3.4vw,38px);}
h3{font-size:19px;}
p{color:var(--ink-soft);}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:999px;
  font-weight:700;font-size:15px;
  transition:all .25s ease;
  white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(90deg,var(--blue),var(--indigo));
  color:#fff;
  box-shadow:0 10px 24px rgba(37,99,235,.35);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(37,99,235,.45);}
.btn--ghost{
  background:#fff;
  color:var(--ink);
  border:1.5px solid var(--line);
}
.btn--ghost:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px);}
.btn--lg{padding:16px 32px;font-size:16px;}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn--full{width:100%;}
.link-arrow{font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:8px;}
.link-arrow i{transition:transform .2s;}
.link-arrow:hover i{transform:translateX(4px);}

/* ===== Header ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s;
}
.header__inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;}
.logo__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--blue),var(--indigo));
  color:#fff;font-size:15px;
}
.logo__text{color:var(--ink);}
.logo--light .logo__text{color:#fff;}

.nav{display:flex;gap:30px;}
.nav a{font-weight:600;font-size:15px;color:var(--ink-soft);position:relative;padding:4px 0;}
.nav a:hover{color:var(--ink);}

.header__cta{display:flex;align-items:center;gap:20px;}
.header__phone{font-weight:700;font-size:14px;color:var(--ink);display:flex;align-items:center;gap:6px;}
.header__phone i{color:var(--blue);}

.burger{display:none;flex-direction:column;gap:5px;width:28px;}
.burger span{height:2px;background:var(--ink);border-radius:2px;transition:.25s;}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:150px 0 90px;
  background:var(--navy-900);
  overflow:hidden;
}
.hero__bg{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 15% 20%, rgba(37,99,235,.35), transparent 45%),
    radial-gradient(circle at 85% 10%, rgba(236,72,153,.25), transparent 40%),
    radial-gradient(circle at 70% 90%, rgba(79,70,229,.3), transparent 45%);
}
.hero__inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;
}
.hero .eyebrow{color:var(--amber);}
.hero h1{color:#fff;margin-bottom:20px;}
.hero__desc{color:#b9c2d8;font-size:17px;max-width:540px;margin-bottom:34px;}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:50px;}
.hero .btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.2);}
.hero .btn--ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.4);color:#fff;}

.hero__stats{display:flex;gap:36px;flex-wrap:wrap;}
.stat{display:flex;flex-direction:column;}
.stat__num{font-size:30px;font-weight:800;color:#fff;}
.stat__num::after{content:attr(data-suffix);}
.stat__label{font-size:13px;color:#8a93ad;font-weight:600;}

.hero__visual{position:relative;height:420px;}
.hero-card{
  position:absolute;
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
  padding:20px;
}
.hero-card--main{
  width:320px;top:10px;right:0;
}
.hero-card__head{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;margin-bottom:18px;color:var(--ink);}
.hero-card__head i{font-size:18px;}
.hero-card__chart{display:flex;align-items:flex-end;gap:8px;height:90px;margin-bottom:16px;}
.hero-card__chart .bar{
  flex:1;height:var(--h);border-radius:6px 6px 0 0;
  background:linear-gradient(180deg,var(--blue-light),var(--blue));
}
.hero-card__foot{display:flex;gap:24px;border-top:1px solid var(--line);padding-top:14px;}
.hero-card__foot div{display:flex;flex-direction:column;}
.hero-card__foot span{font-size:12px;color:var(--ink-faint);}
.hero-card__foot strong{color:var(--green);font-size:16px;}

.hero-card--float{
  width:220px;left:-10px;bottom:70px;
  display:flex;align-items:center;gap:14px;
  animation:float 5s ease-in-out infinite;
}
.hero-card--float i{font-size:26px;}
.hero-card--float strong{display:block;font-size:17px;color:var(--ink);}
.hero-card--float span{font-size:12px;color:var(--ink-faint);}

.hero-card--float2{
  width:200px;left:60px;bottom:-20px;
  display:flex;align-items:center;gap:14px;
  animation:float 6s ease-in-out infinite 1s;
}
.hero-card--float2 i{font-size:24px;}
.hero-card--float2 strong{display:block;font-size:16px;color:var(--ink);}
.hero-card--float2 span{font-size:12px;color:var(--ink-faint);}

@keyframes float{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-14px);}
}

/* ===== Trustbar ===== */
.trustbar{background:var(--bg-soft);padding:26px 0;border-bottom:1px solid var(--line);}
.trustbar__inner{display:flex;align-items:center;gap:30px;flex-wrap:wrap;justify-content:space-between;}
.trustbar__label{font-size:13px;font-weight:700;color:var(--ink-faint);white-space:nowrap;}
.trustbar__logos{display:flex;gap:30px;flex-wrap:wrap;}
.trustbar__logos span{display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;color:var(--ink-soft);}
.trustbar__logos i{font-size:18px;}

/* ===== Section head ===== */
.section-head{max-width:640px;margin:0 auto 56px;text-align:center;}
.section-head--light .eyebrow,
.section-head--light h2{color:#fff;}
.section-desc{font-size:16px;margin-top:14px;}
.section-head--light .section-desc{color:#b9c2d8;}

/* ===== About ===== */
.about{padding:100px 0;}
.about__inner{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center;}
.about__frame{
  aspect-ratio:1/1;border-radius:28px;
  background:linear-gradient(135deg,var(--blue) 0%, var(--indigo) 55%, var(--pink) 100%);
  position:relative;
  box-shadow:var(--shadow-lg);
}
.about__badge{
  position:absolute;bottom:24px;left:24px;right:24px;
  background:rgba(255,255,255,.95);
  border-radius:16px;padding:18px;
  display:flex;align-items:center;gap:14px;
  box-shadow:var(--shadow-md);
}
.about__badge i{font-size:26px;color:var(--amber);}
.about__badge strong{display:block;font-size:17px;}
.about__badge span{font-size:13px;color:var(--ink-faint);}
.about__desc{margin-bottom:22px;font-size:16px;}
.about__list{display:flex;flex-direction:column;gap:12px;margin-bottom:30px;}
.about__list li{display:flex;align-items:flex-start;gap:10px;font-weight:600;color:var(--ink);}
.about__list i{color:var(--green);margin-top:3px;}
.about__ctas{display:flex;align-items:center;gap:26px;flex-wrap:wrap;}

/* ===== Services ===== */
.services{padding:100px 0;background:var(--bg-soft);}
.services__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.service-card{
  background:#fff;border-radius:var(--radius);padding:30px 26px;
  border:1px solid var(--line);
  transition:transform .25s, box-shadow .25s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.service-card__icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:18px;color:#fff;
}
.icon--blue{background:linear-gradient(135deg,#4285F4,#2563eb);}
.icon--indigo{background:linear-gradient(135deg,#6366f1,#4338ca);}
.icon--pink{background:linear-gradient(135deg,#ec4899,#be185d);}
.icon--green{background:linear-gradient(135deg,#22c55e,#15803d);}
.icon--orange{background:linear-gradient(135deg,#f59e0b,#b45309);}
.icon--purple{background:linear-gradient(135deg,#8b5cf6,#6d28d9);}
.icon--teal{background:linear-gradient(135deg,#14b8a6,#0f766e);}
.icon--red{background:linear-gradient(135deg,#ef4444,#b91c1c);}
.icon--cyan{background:linear-gradient(135deg,#06b6d4,#0e7490);}
.icon--rose{background:linear-gradient(135deg,#f43f5e,#be123c);}
.icon--brown{background:linear-gradient(135deg,#a16207,#78350f);}
.service-card h3{margin-bottom:8px;}
.service-card p{font-size:14.5px;}

/* ===== Platforms ===== */
.platforms{padding:100px 0;background:var(--bg-soft);}
.platforms__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;}
.platform-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:26px 16px;text-align:center;
  transition:transform .25s, box-shadow .25s;
}
.platform-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.platform-card i{font-size:30px;margin-bottom:12px;display:block;}
.platform-card span{display:block;font-weight:700;font-size:14.5px;color:var(--ink);margin-bottom:4px;}
.platform-card small{display:block;font-size:11.5px;color:var(--ink-faint);line-height:1.4;}

/* ===== Process ===== */
.process{padding:100px 0;background:var(--navy-900);position:relative;overflow:hidden;}
.process::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%, rgba(79,70,229,.25), transparent 50%);
}
.process__grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-step{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);padding:30px 24px;
}
.process-step__num{
  display:inline-block;font-size:28px;font-weight:800;
  background:linear-gradient(90deg,var(--blue-light),var(--pink));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:14px;
}
.process-step h3{color:#fff;margin-bottom:8px;font-size:17px;}
.process-step p{color:#9aa4bf;font-size:14px;}

/* ===== Portfolio ===== */
.portfolio{padding:100px 0;}
.portfolio__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.portfolio-card{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  transition:transform .25s, box-shadow .25s;
}
.portfolio-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.portfolio-card__cover{
  height:180px;display:flex;align-items:center;justify-content:center;
  font-size:46px;color:#fff;
}
.cover--1{background:linear-gradient(135deg,#f59e0b,#ec4899);}
.cover--2{background:linear-gradient(135deg,#2563eb,#4f46e5);}
.cover--3{background:linear-gradient(135deg,#14b8a6,#22c55e);}
.portfolio-card__body{padding:24px;}
.tag{
  display:inline-block;font-size:12px;font-weight:700;
  color:var(--blue);background:#eef3ff;padding:4px 12px;border-radius:999px;
  margin-bottom:12px;
}
.portfolio-card h3{margin-bottom:8px;font-size:18px;}
.portfolio-card p{font-size:14.5px;}

/* ===== Pricing ===== */
.pricing{padding:100px 0;background:var(--bg-soft);}
.pricing__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch;}
.price-card{
  background:#fff;border-radius:var(--radius);padding:36px 30px;
  border:1px solid var(--line);
  display:flex;flex-direction:column;
  position:relative;
}
.price-card--featured{
  border:2px solid var(--blue);
  box-shadow:var(--shadow-lg);
  transform:translateY(-10px);
}
.price-card__badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:linear-gradient(90deg,var(--blue),var(--indigo));
  color:#fff;font-size:12px;font-weight:700;padding:6px 16px;border-radius:999px;
  white-space:nowrap;
}
.price-card h3{margin-bottom:6px;}
.price-card__for{font-size:13.5px;margin-bottom:20px;min-height:40px;}
.price-card__price{font-size:30px;font-weight:800;color:var(--ink);margin-bottom:24px;}
.price-card__price span{font-size:14px;font-weight:600;color:var(--ink-faint);}
.price-card ul{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1;}
.price-card li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink-soft);}
.price-card li i{color:var(--blue);margin-top:3px;}

/* ===== Testimonials ===== */
.testimonials{padding:100px 0;background:var(--navy-900);}
.testimonials__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.testimonial-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);padding:28px;
}
.testimonial-card__stars{color:var(--amber);font-size:13px;margin-bottom:16px;letter-spacing:3px;}
.testimonial-card p{color:#cbd3e6;font-size:14.5px;margin-bottom:22px;}
.testimonial-card__author{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--pink));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;
}
.testimonial-card__author strong{display:block;color:#fff;font-size:14.5px;}
.testimonial-card__author span{font-size:12.5px;color:#9aa4bf;}

/* ===== FAQ ===== */
.faq{padding:100px 0;}
.faq__inner{max-width:800px;}
.faq__list{display:flex;flex-direction:column;gap:14px;}
.faq-item{border:1px solid var(--line);border-radius:14px;overflow:hidden;}
.faq-item__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 22px;font-weight:700;font-size:15.5px;text-align:left;
  color:var(--ink);
}
.faq-item__q i{transition:transform .25s;color:var(--blue);}
.faq-item.active .faq-item__q i{transform:rotate(180deg);}
.faq-item__a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  padding:0 22px;
}
.faq-item.active .faq-item__a{max-height:200px;padding-bottom:20px;}
.faq-item__a p{font-size:14.5px;}

/* ===== Contact ===== */
.contact{padding:100px 0;background:var(--bg-soft);}
.contact__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;}
.contact__desc{margin:16px 0 30px;font-size:15.5px;}
.contact__items{display:flex;flex-direction:column;gap:20px;margin-bottom:30px;}
.contact-item{display:flex;align-items:flex-start;gap:16px;}
.contact-item i{
  width:42px;height:42px;border-radius:12px;background:#eef3ff;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;
}
.contact-item strong{display:block;font-size:14.5px;}
.contact-item span{font-size:14px;color:var(--ink-soft);}
.contact__socials{display:flex;gap:12px;}
.contact__socials a{
  width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-soft);
  transition:.2s;
}
.contact__socials a:hover{background:var(--blue);color:#fff;border-color:var(--blue);}

.contact__form{
  background:#fff;border-radius:var(--radius);padding:36px;
  box-shadow:var(--shadow-md);border:1px solid var(--line);
  scroll-margin-top:100px;
}
.contact-item.phone-link{cursor:pointer;transition:transform .2s;}
.contact-item.phone-link:hover{transform:translateX(4px);}
.form-group.flash input,.form-group.flash select{
  animation:flashField 1.1s ease;
}
@keyframes flashField{
  0%,100%{box-shadow:none;border-color:var(--line);}
  30%{box-shadow:0 0 0 4px rgba(37,99,235,.18);border-color:var(--blue);}
}
.contact__form h3{margin-bottom:22px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:13.5px;font-weight:700;margin-bottom:6px;color:var(--ink);}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:14.5px;color:var(--ink);background:#fff;
  transition:border-color .2s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--blue);
}
.form-group textarea{resize:vertical;}
.form-note{margin-top:14px;font-size:13.5px;text-align:center;color:var(--green);font-weight:600;min-height:18px;}

/* ===== Footer ===== */
.footer{background:var(--navy-950);padding:70px 0 0;}
.footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px;}
.footer__brand p{color:#8a93ad;font-size:14px;margin-top:16px;max-width:280px;}
.footer__col h4{color:#fff;font-size:15px;margin-bottom:18px;}
.footer__col{display:flex;flex-direction:column;gap:12px;}
.footer__col a{color:#9aa4bf;font-size:14px;transition:.2s;display:flex;align-items:center;gap:8px;}
.footer__col a:hover{color:#fff;}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;}
.footer__bottom-inner{display:flex;justify-content:space-between;font-size:13px;color:#7a84a0;}

/* ===== Scroll top ===== */
.scroll-top{
  position:fixed;bottom:26px;right:26px;z-index:90;
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--indigo));
  color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:.25s;
}
.scroll-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero__inner{grid-template-columns:1fr;}
  .hero__visual{display:none;}
  .about__inner{grid-template-columns:1fr;}
  .about__frame{max-width:360px;margin:0 auto;}
  .services__grid{grid-template-columns:repeat(2,1fr);}
  .platforms__grid{grid-template-columns:repeat(4,1fr);}
  .process__grid{grid-template-columns:repeat(2,1fr);}
  .portfolio__grid{grid-template-columns:repeat(2,1fr);}
  .pricing__grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
  .price-card--featured{transform:none;}
  .testimonials__grid{grid-template-columns:1fr;}
  .contact__inner{grid-template-columns:1fr;}
}

@media (max-width:860px){
  .nav{
    position:fixed;top:76px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:flex-start;
    padding:30px 24px;gap:22px;
    transform:translateX(100%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav.open{transform:translateX(0);}
  .nav a{font-size:17px;}
  .header__phone{display:none;}
  .burger{display:flex;}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .burger.open span:nth-child(2){opacity:0;}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
}

@media (max-width:640px){
  .container{padding:0 18px;}
  .hero{padding:120px 0 70px;}
  .hero__stats{gap:24px;}
  .stat__num{font-size:24px;}
  .services__grid{grid-template-columns:1fr;}
  .platforms__grid{grid-template-columns:repeat(2,1fr);}
  .process__grid{grid-template-columns:1fr;}
  .portfolio__grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer__inner{grid-template-columns:1fr;gap:30px;}
  .trustbar__inner{justify-content:flex-start;}
  .footer__bottom-inner{flex-direction:column;gap:6px;text-align:center;}
}