/* ============================================================
   Webtui.vn — app.css
   Frontend tĩnh · tím công nghệ · sạch · nhanh
   (Prototype: font load qua Google Fonts; production self-host woff2)
   ============================================================ */

:root{
  --primary:#7643c9;
  --primary-dark:#4b2490;
  --primary-700:#5d31a8;
  --accent:#00b894;
  --accent-dark:#079a7e;
  --text:#111827;
  --text-light:#6b7280;
  --bg:#ffffff;
  --soft:#f7f5ff;
  --soft-2:#faf9ff;
  --border:#e5e7eb;
  --border-soft:#eceaf5;

  --radius:14px;
  --radius-sm:10px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(17,24,39,.04), 0 1px 3px rgba(17,24,39,.05);
  --shadow:0 6px 24px -8px rgba(75,36,144,.18), 0 2px 8px -4px rgba(17,24,39,.06);
  --shadow-lg:0 24px 60px -20px rgba(75,36,144,.30);

  --container:1180px;
  --header-h:72px;

  --ease:cubic-bezier(.22,.61,.36,1);
  font-synthesis:none;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.2;font-weight:700;letter-spacing:-.02em;color:var(--text);text-wrap:balance}
p{text-wrap:pretty}

/* ---------- layout ---------- */
.container{max-width:var(--container);margin-inline:auto;padding-inline:24px}
.section{padding-block:88px}
.section--soft{background:var(--soft)}
.section--tight{padding-block:64px}
@media(max-width:768px){
  .section{padding-block:56px}
  .section--tight{padding-block:44px}
}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}

.section-head{max-width:680px;margin-bottom:48px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .eyebrow::before{display:none}
.section-head h2{font-size:clamp(28px,4vw,42px);margin:14px 0 0}
.section-head p{margin-top:16px;color:var(--text-light);font-size:18px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:600;font-size:15px;line-height:1;
  padding:14px 22px;border-radius:var(--radius-sm);
  transition:transform .18s var(--ease),box-shadow .2s var(--ease),background .2s;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -8px rgba(118,67,201,.6)}
.btn--primary:hover{background:var(--primary-700);transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(118,67,201,.7)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px -8px rgba(0,184,148,.55)}
.btn--accent:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn--ghost{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn--ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn--light{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn--light:hover{background:rgba(255,255,255,.24)}
.btn--lg{padding:17px 30px;font-size:16px}
.btn--block{width:100%}

/* ---------- topbar ---------- */
.topbar{background:var(--primary-dark);color:#ddd6f0;font-size:13px}
.topbar__in{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar__contacts{display:flex;gap:20px}
.topbar__contacts a{display:inline-flex;align-items:center;gap:7px;color:#ddd6f0;transition:color .15s}
.topbar__contacts a:hover{color:#fff}
.topbar__contacts svg{width:14px;height:14px}
.topbar__socials{display:flex;gap:6px}
.topbar__socials a{width:26px;height:26px;border-radius:7px;display:grid;place-items:center;background:rgba(255,255,255,.1);color:#fff;transition:background .15s,transform .15s}
.topbar__socials a:hover{background:var(--accent);transform:translateY(-1px)}
.topbar__socials svg{width:13px;height:13px;display:block}
@media(max-width:768px){.topbar{display:none}}

/* ---------- header ---------- */
.header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--border-soft);
}
.header__bar{display:flex;align-items:center;gap:32px;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.02em}
.logo__img{width:40px;height:auto;flex:none}
.logo__text{display:block;line-height:1.15}
.logo__text small{display:block;margin-top:2px}
.logo b{color:var(--primary)}
.logo small{color:var(--text-light);font-weight:500;font-size:10.5px;letter-spacing:.04em;white-space:nowrap}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  padding:10px 13px;border-radius:9px;font-weight:500;font-size:15px;color:#374151;
  transition:color .15s,background .15s;
}
.nav__link:hover{color:var(--primary);background:var(--soft)}
.nav__link svg{width:14px;height:14px;transition:transform .2s}

/* dropdown */
.has-menu{position:relative}
.dropdown{
  position:absolute;top:calc(100% + 10px);left:-10px;transform:translateY(8px);
  width:min(560px,86vw);background:#fff;border:1px solid var(--border);
  border-radius:16px;box-shadow:var(--shadow-lg);padding:10px;
  display:grid;grid-template-columns:1fr 1fr;gap:4px;
  opacity:0;visibility:hidden;transition:opacity .18s var(--ease),transform .18s var(--ease);
}
/* cầu vô hình lấp khoảng hở giữa nút và menu — tránh menu đóng khi di chuột xuống */
.dropdown::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.has-menu.open .dropdown,.has-menu:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.has-menu.open .nav__link svg,.has-menu:hover .nav__link svg{transform:rotate(180deg)}
.dropdown__item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:11px;transition:background .15s;min-width:0}
.dropdown__item:hover{background:var(--soft)}
.dropdown__ico{
  width:38px;height:38px;flex:none;border-radius:10px;background:var(--soft);
  display:grid;place-items:center;color:var(--primary);
}
.dropdown__ico svg{width:20px;height:20px}
.dropdown__t{font-weight:600;font-size:14.5px;line-height:1.3}
.dropdown__d{display:none}

.header__cta{display:flex;align-items:center;gap:10px;margin-left:8px}
.header__phone{display:flex;flex-direction:column;line-height:1.15;text-align:right}
.header__phone small{font-size:11px;color:var(--text-light)}
.header__phone b{font-size:15px;color:var(--primary-dark)}

.burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);margin-left:auto}
@media(max-width:1080px){
  .nav,.header__cta{display:none}
  .burger{display:block}
  .header__bar{gap:16px}
}
.burger span{display:block;width:20px;height:2px;background:var(--text);margin:4px auto;border-radius:2px;transition:.25s}
.burger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:55;visibility:hidden;
}
.drawer__scrim{position:absolute;inset:0;background:rgba(17,24,39,.45);opacity:0;transition:.25s}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(360px,86vw);
  background:#fff;box-shadow:var(--shadow-lg);padding:24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s var(--ease);
}
.drawer.open{visibility:visible}
.drawer.open .drawer__scrim{opacity:1}
.drawer.open .drawer__panel{transform:translateX(0)}
.drawer__close{position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);font-size:22px;color:var(--text-light)}
.drawer__link{display:block;padding:14px 6px;font-weight:600;font-size:17px;border-bottom:1px solid var(--border-soft)}
.drawer__sub{padding:4px 0 10px}
.drawer__sub a{display:block;padding:9px 14px;color:var(--text-light);font-size:15px;border-radius:8px}
.drawer__sub a:hover{background:var(--soft);color:var(--primary)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 480px at 88% -10%,rgba(118,67,201,.10),transparent 60%),
  radial-gradient(700px 420px at 6% 110%,rgba(0,184,148,.08),transparent 60%),
  var(--bg);
}
.hero__grid{display:grid;grid-template-columns:1.08fr .78fr;gap:56px;align-items:center;padding-block:84px}
.hero__badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-sm);
  font-size:13px;font-weight:600;color:var(--primary-dark);
}
.hero__badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(0,184,148,.18)}
.hero h1{font-size:clamp(34px,5.2vw,58px);margin:22px 0 0;line-height:1.08}
.hero h1 .hl{color:var(--primary);position:relative;white-space:nowrap}
.hero__lead{font-size:19px;color:var(--text-light);margin-top:22px;max-width:540px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:40px}
.hero__trust div{display:flex;flex-direction:column}
.hero__trust b{font-size:26px;color:var(--primary-dark);letter-spacing:-.02em}
.hero__trust span{font-size:13.5px;color:var(--text-light)}

@media(max-width:900px){
  .hero__grid{grid-template-columns:1fr;gap:36px;padding-block:54px}
  .hero__visual{order:-1}
}

.hero__visual picture{display:block}
.hero__visual{max-width:440px;margin-left:auto}
.hero__image{
  width:100%;
  aspect-ratio:6/7;
  max-height:560px;
  object-fit:cover;
  object-position:center;
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  box-shadow:var(--shadow-lg);
  background:var(--soft);
}
@media(max-width:900px){
  .hero__grid{padding-top:0}
  .hero__visual{max-width:none;margin-inline:-24px}
  .hero__image{
    aspect-ratio:5/4;
    max-height:none;
    border-radius:0;
    border-left:0;
    border-right:0;
    box-shadow:none;
  }
}

/* placeholder (ảnh chưa có) */
.ph{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:
    repeating-linear-gradient(135deg,var(--soft) 0 14px,#fff 14px 28px);
  border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text-light);
}
.ph::after{
  content:attr(data-label);font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;
  font-size:12.5px;letter-spacing:.02em;color:#9aa0ab;
  background:#fff;padding:6px 12px;border-radius:8px;border:1px solid var(--border);
  box-shadow:var(--shadow-sm);max-width:80%;text-align:center;
}
.hero__visual .ph{aspect-ratio:5/4;box-shadow:var(--shadow-lg)}
/* floating chips on hero visual */
.hero__visual{position:relative}
.chip{
  position:absolute;background:#fff;border:1px solid var(--border);border-radius:12px;
  box-shadow:var(--shadow);padding:11px 14px;display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;
}
.chip .ico{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;color:#fff}
.chip .ico svg{width:16px;height:16px}
.chip--a{top:-18px;left:-14px}
.chip--a .ico{background:var(--primary)}
.chip--b{bottom:-16px;right:-12px}
.chip--b .ico{background:var(--accent)}
@media(max-width:520px){.chip{display:none}}

/* ---------- partner logos ---------- */
.section--partners{
  padding-block:68px;
  background:linear-gradient(180deg,#fff 0%,#fbfbfe 100%);
  border-top:1px solid var(--border-soft);
  border-bottom:1px solid var(--border-soft);
}
.partners__head{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(300px,.75fr);
  gap:28px 54px;
  align-items:end;
  margin-bottom:30px;
}
.partners__head h2{
  font-size:clamp(25px,3.2vw,36px);
  margin-top:12px;
  max-width:760px;
}
.partners__head p{
  color:var(--text-light);
  font-size:16px;
  max-width:520px;
}
.partners__grid{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:12px;
}
.partners__item{
  min-height:86px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  display:grid;
  place-items:center;
  padding:16px 18px;
  box-shadow:var(--shadow-sm);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.partners__item:hover{
  transform:translateY(-2px);
  border-color:var(--border-soft);
  box-shadow:var(--shadow);
}
.partners__item img{
  width:auto;
  max-width:150px;
  max-height:46px;
  object-fit:contain;
}
@media(max-width:1080px){
  .partners__grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:760px){
  .section--partners{padding-block:50px}
  .partners__head{grid-template-columns:1fr;gap:16px;margin-bottom:24px}
  .partners__head p{font-size:15px}
  .partners__grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
  .partners__item{min-height:74px;padding:13px}
  .partners__item img{max-width:108px;max-height:38px}
}
@media(max-width:430px){
  .partners__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- service cards ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:980px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:transform .2s var(--ease),box-shadow .2s,border-color .2s;
  position:relative;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-soft)}
.card__ico{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(118,67,201,.12),rgba(0,184,148,.10));
  color:var(--primary);
}
.card__ico svg{width:27px;height:27px}
.card h3{font-size:20px;margin-bottom:9px}
.card p{color:var(--text-light);font-size:15px}
.card__link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;font-size:14.5px;color:var(--primary)}
.card__link svg{width:15px;height:15px;transition:transform .2s}
.card:hover .card__link svg{transform:translateX(4px)}

/* ---------- why us ---------- */
.why{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
@media(max-width:900px){.why{grid-template-columns:1fr;gap:36px}}
.why__list{display:grid;gap:14px}
.why__item{display:flex;gap:14px;padding:18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.why__item .tick{width:30px;height:30px;flex:none;border-radius:8px;background:rgba(0,184,148,.12);color:var(--accent-dark);display:grid;place-items:center}
.why__item .tick svg{width:17px;height:17px}
.why__item b{font-size:16px}
.why__item p{font-size:14px;color:var(--text-light);margin-top:3px}

/* ---------- industry ---------- */
.ind{display:flex;gap:16px;flex-direction:column}
.ind__row{
  display:grid;grid-template-columns:48px 1fr auto;gap:18px;align-items:center;
  padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  transition:transform .18s var(--ease),box-shadow .2s,border-color .2s;
}
.ind__row:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:var(--border-soft)}
.ind__ico{width:48px;height:48px;border-radius:12px;background:var(--soft);color:var(--primary);display:grid;place-items:center}
.ind__ico svg{width:24px;height:24px}
.ind__row h4{font-size:18px}
.ind__row p{font-size:14.5px;color:var(--text-light);margin-top:3px}
.ind__row .go{color:var(--primary);display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--soft)}
.ind__row .go svg{width:18px;height:18px}
@media(max-width:640px){
  .ind__row{grid-template-columns:44px 1fr;}
  .ind__row .go{display:none}
}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
@media(max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:26px 22px;border-radius:var(--radius);background:var(--soft);border:1px solid var(--border-soft)}
.step__n{width:40px;height:40px;border-radius:11px;background:var(--primary);color:#fff;font-weight:800;display:grid;place-items:center;font-size:17px;margin-bottom:14px}
.step h4{font-size:16.5px}
.step p{font-size:13.5px;color:var(--text-light);margin-top:6px}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:980px){.price-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.price-grid{grid-template-columns:1fr}}
.plan{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;
  display:flex;flex-direction:column;transition:transform .2s var(--ease),box-shadow .2s;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.plan--feat{border:2px solid var(--primary);box-shadow:var(--shadow);position:relative}
.plan--feat::before{content:"Phổ biến";position:absolute;top:-12px;right:22px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px}
.plan__name{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--primary)}
.plan__price{font-size:30px;font-weight:800;letter-spacing:-.02em;margin:12px 0 4px}
.plan__price small{font-size:14px;font-weight:500;color:var(--text-light)}
.plan__desc{font-size:14px;color:var(--text-light);min-height:42px}
.plan__feats{display:grid;gap:11px;margin:20px 0 24px;border-top:1px solid var(--border-soft);padding-top:20px}
.plan__feats li{display:flex;gap:10px;font-size:14.5px;color:#374151}
.plan__feats svg{width:18px;height:18px;flex:none;color:var(--accent-dark);margin-top:1px}
.plan .btn{margin-top:auto}
.addons-box{margin-top:28px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.addons-box h3{font-size:20px;margin-bottom:14px}
.addons-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.addons-list span{display:block;background:var(--soft-2);border:1px solid var(--border-soft);border-radius:10px;padding:13px 14px;color:#374151;font-size:14.5px}
.addons-list b{color:var(--primary-dark)}
@media(max-width:760px){.addons-list{grid-template-columns:1fr}}

/* ---------- articles ---------- */
.post{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s}
.post:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post .ph{aspect-ratio:16/9;border-radius:0;border:none;border-bottom:1px solid var(--border)}
.thumb-img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;display:block;background:var(--soft)}
.post .thumb-img{height:220px;aspect-ratio:auto;border-bottom:1px solid var(--border)}
@media(max-width:980px){.post .thumb-img{height:205px}}
@media(max-width:640px){.post .thumb-img{height:auto;aspect-ratio:16/9}}
.post__body{padding:22px}
.post__cat{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent-dark)}
.post h4{font-size:18px;margin:9px 0;line-height:1.3}
.post p{font-size:14px;color:var(--text-light)}
.post__meta{margin-top:14px;font-size:13px;color:#9aa0ab}

/* ---------- big CTA ---------- */
.cta{
  border-radius:var(--radius-lg);overflow:hidden;position:relative;color:#fff;
  background:
    radial-gradient(700px 360px at 85% -20%,rgba(0,184,148,.4),transparent 60%),
    linear-gradient(120deg,var(--primary-dark),var(--primary));
  padding:64px;
}
.cta h2{color:#fff;font-size:clamp(26px,3.6vw,40px);max-width:640px}
.cta p{margin-top:16px;font-size:18px;color:rgba(255,255,255,.85);max-width:560px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
@media(max-width:640px){.cta{padding:40px 28px}}

/* ---------- footer ---------- */
.footer{background:#0f0a1f;color:#cbd2dd;padding-block:64px 28px;font-size:14.5px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
@media(max-width:860px){.footer__grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer__grid{grid-template-columns:1fr}}
.footer .logo{color:#fff}
.footer .logo small{color:#8b93a7}
.footer__about{margin-top:16px;color:#9aa3b5;max-width:320px}
.footer h5{color:#fff;font-size:14px;letter-spacing:.04em;text-transform:uppercase;margin-bottom:16px}
.footer__col a{display:block;padding:6px 0;color:#aeb6c6;transition:color .15s}
.footer__col a:hover{color:#fff}
.footer__contact li{display:flex;gap:11px;padding:6px 0;color:#aeb6c6}
.footer__contact svg{width:17px;height:17px;flex:none;margin-top:3px;color:var(--accent)}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;color:#7c849a;font-size:13px}
.footer__socials{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;max-width:320px}
.footer__socials a{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#fff;
  transition:background .15s,transform .15s,border-color .15s;
}
.footer__socials a:hover{background:var(--primary);border-color:var(--primary);transform:translateY(-2px)}
.footer__socials svg{width:16px;height:16px}
.footer__socials .txt{font-weight:800;font-size:12px;color:#fff;letter-spacing:-.02em}

/* ---------- mobile sticky CTA bar ---------- */
.mbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:none;
  grid-template-columns:1fr 1fr 1.3fr;gap:0;
  background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px -12px rgba(17,24,39,.2);
}
.mbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:9px 4px;font-size:11.5px;font-weight:600;color:var(--text)}
.mbar a svg{width:20px;height:20px}
.mbar a.call{color:var(--primary-dark)}
.mbar a.zalo{color:#0068ff}
.mbar a.consult{background:var(--primary);color:#fff;margin:6px;border-radius:10px}
@media(max-width:768px){
  .mbar{display:grid}
  body{padding-bottom:64px}
}

/* ---------- floating contact (desktop) ---------- */
.fab{position:fixed;right:20px;bottom:92px;z-index:52;display:flex;flex-direction:column;align-items:center;gap:10px}
.fab__items{display:flex;flex-direction:column;gap:10px;align-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:.22s var(--ease)}
.fab.open .fab__items{opacity:1;visibility:visible;transform:none}
.fab__item{position:relative;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:#fff;
  box-shadow:0 8px 20px -8px rgba(17,24,39,.45);transition:transform .15s}
.fab__item:hover{transform:scale(1.08)}
.fab__item img{width:21px;height:21px}
.fab__item svg{width:21px;height:21px}
.fab__item::after{content:attr(data-label);position:absolute;right:56px;top:50%;transform:translateY(-50%);
  background:#111827;color:#fff;font-size:12.5px;font-weight:600;padding:6px 11px;border-radius:8px;white-space:nowrap;
  opacity:0;visibility:hidden;transition:.15s}
.fab__item:hover::after{opacity:1;visibility:visible}
.fab__item--call{background:var(--accent)}
.fab__item--zalo{background:#0068ff}
.fab__item--fb{background:#1877f2}
.fab__main{position:relative;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;
  display:grid;place-items:center;box-shadow:0 12px 28px -10px rgba(75,36,144,.65);transition:background .2s,transform .2s}
.fab__main:hover{background:var(--primary-700);transform:scale(1.05)}
.fab__main svg{width:25px;height:25px}
.fab__main::before{content:"";position:absolute;inset:-5px;border-radius:50%;border:2px solid rgba(118,67,201,.45);
  animation:fabpulse 2s var(--ease) infinite;pointer-events:none}
@keyframes fabpulse{0%{transform:scale(.92);opacity:1}100%{transform:scale(1.32);opacity:0}}
@media(prefers-reduced-motion:reduce){.fab__main::before{animation:none}}
.fab .ico-close{display:none}
.fab.open .ico-chat{display:none}
.fab.open .ico-close{display:block}
.fab.open .fab__main::before{animation:none;opacity:0}
@media(max-width:768px){.fab{display:none}}

/* ---------- back to top ---------- */
.totop{
  position:fixed;right:25px;bottom:20px;z-index:45;width:46px;height:46px;border-radius:12px;
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);color:var(--primary);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.25s var(--ease);
}
.totop.show{opacity:1;visibility:visible;transform:translateY(0)}
.totop svg{width:20px;height:20px}
@media(max-width:768px){.totop{bottom:74px}}

/* ---------- breadcrumb / page hero ---------- */
.pagehero{background:
  radial-gradient(700px 360px at 92% -30%,rgba(118,67,201,.10),transparent 60%),var(--soft);
  border-bottom:1px solid var(--border-soft);padding-block:48px 56px}
.crumb{display:flex;gap:8px;align-items:center;font-size:13.5px;color:var(--text-light);margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:var(--primary)}
.crumb span{color:#c4c9d2}
.pagehero h1{font-size:clamp(30px,4.4vw,48px);max-width:820px}
.pagehero p{margin-top:16px;font-size:18px;color:var(--text-light);max-width:660px}
.pagehero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ---------- generic prose / faq ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:32px}}
.prose h3{font-size:24px;margin:0 0 14px}
.prose h4{font-size:18px;margin:26px 0 8px}
.prose p{color:#374151;margin-bottom:14px}
.prose a{color:var(--primary);font-weight:600}
.prose ul.bullets{display:grid;gap:10px;margin:8px 0 18px}
.prose ul.bullets li{display:flex;gap:11px;color:#374151}
.prose ul.bullets svg{width:19px;height:19px;flex:none;color:var(--accent-dark);margin-top:3px}
.article-wrap{max-width:860px;margin-inline:auto}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 16px;color:var(--text-light);font-size:14px;margin-top:16px}
.article-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-sm)}
.article-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:24px;background:var(--soft)}
@media(max-width:640px){.article-card{padding:24px}}

.feature-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:14px;font-weight:500}
.pill svg{width:15px;height:15px;color:var(--primary)}

/* faq */
.faq{display:grid;gap:12px}
.faq__item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq__q{display:flex;justify-content:space-between;gap:16px;align-items:center;width:100%;text-align:left;padding:20px 22px;font-weight:600;font-size:16.5px}
.faq__q .pm{width:26px;height:26px;flex:none;border-radius:50%;background:var(--soft);display:grid;place-items:center;color:var(--primary);transition:.25s}
.faq__q .pm svg{width:15px;height:15px;transition:.25s}
.faq__item.open .pm{background:var(--primary);color:#fff}
.faq__item.open .pm svg{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq__a p{padding:0 22px 22px;color:var(--text-light);font-size:15px}

/* note */
.note{display:flex;gap:14px;align-items:flex-start;background:var(--soft);border:1px solid var(--border-soft);border-radius:var(--radius);padding:20px 24px;max-width:760px;margin:0 auto}
.note svg{width:22px;height:22px;flex:none;color:var(--primary);margin-top:3px}
.note p{color:var(--text-light);font-size:15.5px}

.map-embed{
  width:100%;
  aspect-ratio:16/10;
  margin-top:16px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  background:var(--soft);
}

/* featured article */
.featured{display:grid;grid-template-columns:1.1fr 1fr;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s}
.featured:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.featured .ph{border-radius:0;border:none;min-height:300px}
.featured .thumb-img{width:100%;height:340px;min-height:0;aspect-ratio:auto;object-fit:cover}
.featured__body{padding:38px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.featured__body h3{font-size:clamp(22px,2.6vw,30px);margin:10px 0 12px}
.featured__body p{color:var(--text-light);font-size:16px}
@media(max-width:800px){.featured{grid-template-columns:1fr}.featured .thumb-img{height:auto;aspect-ratio:16/9}.featured__body{padding:26px}}

/* sidebar card */
.sidecard{background:var(--soft);border:1px solid var(--border-soft);border-radius:var(--radius);padding:26px;position:sticky;top:96px}
.sidecard h4{font-size:19px;margin-bottom:8px}
.sidecard p{font-size:14.5px;color:var(--text-light);margin-bottom:18px}
.sidecard .line{display:flex;gap:10px;align-items:center;padding:10px 0;border-top:1px solid var(--border-soft);font-size:14.5px}
.sidecard .line svg{width:18px;height:18px;color:var(--primary)}

/* problem cards */
.prob{display:flex;gap:14px;padding:20px;background:var(--soft);border:1px solid var(--border-soft);border-radius:var(--radius)}
.prob .x{width:30px;height:30px;flex:none;border-radius:8px;background:rgba(118,67,201,.12);color:var(--primary);display:grid;place-items:center}
.prob .x svg{width:17px;height:17px}
.prob b{font-size:15.5px}
.prob p{font-size:14px;color:var(--text-light);margin-top:3px}

/* ---------- contact form ---------- */
.form{display:grid;gap:18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow)}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:14px;font-weight:600}
.field label .req{color:var(--primary)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15px;padding:13px 15px;border:1px solid var(--border);
  border-radius:var(--radius-sm);background:#fff;color:var(--text);transition:border-color .15s,box-shadow .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(118,67,201,.12)}
.field textarea{resize:vertical;min-height:110px}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:560px){.field--row{grid-template-columns:1fr}}
.field.err input,.field.err select,.field.err textarea{border-color:#e11d48;box-shadow:0 0 0 4px rgba(225,29,72,.1)}
.field__msg{font-size:12.5px;color:#e11d48;display:none}
.field.err .field__msg{display:block}
.form__ok{display:none;text-align:center;padding:40px 24px}
.form__ok.show{display:block}
.form__ok .big{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:rgba(0,184,148,.14);color:var(--accent-dark);display:grid;place-items:center}
.form__ok .big svg{width:34px;height:34px}
.form__ok h3{font-size:24px}
.form__ok p{color:var(--text-light);margin-top:8px}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr}}
.contact-info{display:grid;gap:14px}
.contact-info .row{display:flex;gap:14px;padding:18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.contact-info .row .ic{width:44px;height:44px;flex:none;border-radius:11px;background:var(--soft);color:var(--primary);display:grid;place-items:center}
.contact-info .row .ic svg{width:21px;height:21px}
.contact-info .row small{color:var(--text-light);font-size:13px}
.contact-info .row b{font-size:16px;display:block;margin-top:2px}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* utilities */
.center{text-align:center}
.mt-s{margin-top:14px}.mt-m{margin-top:28px}.mt-l{margin-top:44px}
.muted{color:var(--text-light)}

/* ---------- mobile polish & performance ---------- */
@media(max-width:900px){
  .header{
    background:#fff;
    backdrop-filter:none;
  }
  .hero{
    background:
      linear-gradient(180deg,#fff 0%,#fbfaff 72%,#fff 100%);
  }
  .hero__grid{
    gap:28px;
    padding-block:34px 48px;
  }
  .hero__visual{
    order:0;
    max-width:520px;
    margin-inline:auto;
  }
  .hero__image{
    border-radius:18px;
    border:1px solid var(--border);
    box-shadow:0 16px 36px -24px rgba(75,36,144,.45);
  }
}

@media(max-width:640px){
  .container{padding-inline:20px}
  .header__bar{height:66px}
  .logo{gap:9px;font-size:18px}
  .logo__img{width:36px}
  .logo small{font-size:10px}
  .burger{
    width:42px;
    height:42px;
    border-radius:12px;
  }
  .hero__grid{
    padding-block:26px 38px;
  }
  .hero__badge{
    max-width:100%;
    font-size:12px;
    white-space:normal;
  }
  .hero h1{
    font-size:34px;
    line-height:1.12;
    margin-top:18px;
  }
  .hero__lead{
    font-size:16.5px;
    line-height:1.7;
    margin-top:16px;
  }
  .hero__actions{
    display:grid;
    grid-template-columns:1fr;
    gap:12px;
    margin-top:24px;
  }
  .hero__actions .btn{
    width:100%;
    min-height:52px;
  }
  .hero__trust{
    display:grid;
    grid-template-columns:1fr;
    gap:12px;
    margin-top:24px;
  }
  .hero__trust div{
    padding:14px 16px;
    border:1px solid var(--border-soft);
    border-radius:12px;
    background:#fff;
    box-shadow:var(--shadow-sm);
  }
  .hero__trust b{font-size:22px}
  .hero__visual{
    width:100%;
    margin-top:2px;
  }
  .hero__image{
    aspect-ratio:5/4;
    width:100%;
  }
  .section-head{
    margin-bottom:30px;
  }
  .section-head h2{
    font-size:27px;
  }
  .section-head p{
    font-size:16px;
  }
  .card,
  .plan,
  .post__body,
  .why__item,
  .ind__row{
    padding:22px;
  }
  .post .thumb-img{
    height:auto;
    aspect-ratio:16/9;
  }
  .partners__head h2{
    font-size:26px;
  }
  .partners__grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .partners__item{
    min-height:76px;
    border-radius:12px;
  }
  .partners__item img{
    max-width:116px;
    max-height:40px;
  }
  .cta{
    padding:32px 22px;
    border-radius:18px;
  }
  .cta__actions{
    display:grid;
    grid-template-columns:1fr;
  }
  .cta__actions .btn{
    width:100%;
    white-space:normal;
    line-height:1.25;
  }
}