/* ==========================================================================
   Cameramienbac — AI & SMART
   Static clone of assets/design/trang-chu.png
   Reference viewport: 1024px (content container = 968px)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand blues */
  --navy-950: #00102f;
  --navy-900: #001336;
  --navy-850: #001741;
  --navy-800: #001b4a;
  --blue-800: #0043a0;
  --blue-700: #0147a8;
  --blue-600: #0057c2;
  --blue-500: #0072f5;
  --blue-400: #1e8bff;
  --cyan-400: #29d8ff;
  --cyan-300: #4ae6ff;

  /* Ink */
  --ink-title: #011b58;
  --ink-body: #16356f;
  --ink-muted: #4a6491;
  --ink-invert: #ffffff;

  /* Surfaces */
  --surface: #ffffff;
  --surface-tint: #f8fbfe;

  /* Layout */
  --container: 1200px;
  --gutter: 28px;

  /* Type */
  --font-display: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-ui: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius-card: 10px;
  --radius-pill: 999px;
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink-body);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Components set their own display (flex/grid), which would otherwise beat
   the UA rule for [hidden] and keep JS-hidden elements on screen. */
[hidden] { display: none !important; }

img { max-width: 100%; height: auto; display: block; }

/* safety net: an inline icon without an explicit size never blows up */
svg { flex: none; }
svg:not([width]) { width: 1em; height: 1em; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, p, figure { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* Display type helper */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0;
}

/* --------------------------------------------------------------------------
   3. Brand lockup (shared: header / hero / footer)
   -------------------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  line-height: 1;
}

.brand__mark {
  display: block;
  width: 39px;
  height: 47px;
  flex: none;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  letter-spacing: .01em;
  color: #fff;
}

.brand__sub {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  letter-spacing: .06em;
  color: #35c8f2;
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-950) 100%);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 56px;
  padding-left: var(--gutter);
}

.header__brand .brand__mark { width: 40px; height: 48px; }
.header__brand .brand__text { position: relative; top: 2px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: 43px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 20px 0 19px;
  font-size: 15px;
  font-weight: 500;
  color: #fdfdfe;
  white-space: nowrap;
  transition: color .18s ease;
}

.nav-link svg { flex: none; opacity: .9; }

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 7px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #0fe0fb, #06b4ea);
  opacity: 0;
  transition: opacity .18s ease;
}

@media (hover: hover) { .nav-link:hover { color: var(--cyan-300); } }

.nav-link.is-active {
  color: #35dcf7;
  font-weight: 600;
}

.nav-link.is-active::after { opacity: 1; }

.has-sub > .nav-link svg { transition: transform .2s ease; }

/* Desktop with a real pointer: chevron follows the hover dropdown. */
@media (hover: hover) and (min-width: 1024px) {
  .has-sub:hover > .nav-link svg,
  .has-sub:focus-within > .nav-link svg { transform: rotate(180deg); }
}

.nav-group__menu .nav-group__overview { display: none; }
.nav-toggle__close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__open { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__close { display: block; }

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex: none;
  height: 40px;
  margin-left: auto;
  white-space: nowrap;
  padding: 0 10px 0 13px;
  border: 1.3px solid rgba(196, 228, 255, .8);
  border-radius: var(--radius-pill);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
  color: #fff;
  transition: background-color .2s ease, border-color .2s ease;
}

.header__phone:hover {
  background: rgba(46, 130, 224, .22);
  border-color: rgba(120, 200, 245, .9);
}

/* dropdown ------------------------------------------------------------- */
.nav-group { position: relative; }

.nav-group__menu {
  position: absolute;
  top: 100%;
  left: -14px;
  min-width: 216px;
  padding: 8px 0;
  margin: 0;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 18px 40px rgba(0, 24, 70, .22);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}

.nav-group:hover .nav-group__menu,
.nav-group:focus-within .nav-group__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-group__menu a {
  display: block;
  padding: 9px 18px;
  font-size: 15px;
  color: var(--ink-body);
}

.nav-group__menu a:hover,
.nav-group__menu a.is-current { background: #eef5fd; color: var(--blue-600); }
.nav-group__menu a.is-current { font-weight: 600; }

body.nav-locked { overflow: hidden; }

@keyframes navSub { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .nav-group.is-open .nav-group__menu { animation: none; } }

.nav-toggle { display: none; }

/* --------------------------------------------------------------------------
   5. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 372px;
  background: #001741 url("../images/hero-bg.webp") center top / cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(0,8,28,.92) 0%, rgba(0,12,40,.8) 45%, rgba(0,14,46,.4) 70%, rgba(0,20,60,0) 100%);
}

.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 32px;
  padding-block: 40px;
  min-height: 372px;
}

.hero__eyebrow {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: #8fd4ff;
}

.hero__eyebrow span:last-child { color: #fff; font-weight: 700; }

.hero__title {
  margin-top: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 40px;
  line-height: 47px;
  letter-spacing: 0;
  color: #fff;
  text-transform: uppercase;
}

.hero__title span {
  display: block;
  color: var(--cyan-400);
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .005em;
  color: #fff;
}

.hero__tags li { display: flex; align-items: center; gap: 12px; }

.hero__tags li + li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #17e0ff;
  flex: none;
}

.hero__lead {
  max-width: 460px;
  margin-top: 14px;
  font-size: 15px;
  font-weight: 400;
  line-height: 22px;
  color: #fff;
}

.hero__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 21px;
  margin-top: 22px;
}

/* --- hero visual (right column) ------------------------------------------ */
.hero__visual { position: relative; min-height: 420px; }

.hero__badges {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.hero__badge-item {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  background: rgba(0, 20, 56, .62);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(3px);
  font-size: 13.5px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 8px 18px rgba(0, 10, 40, .35);
}

.hero__badge-item svg { flex: none; width: 15px; height: 15px; color: var(--cyan-300); }

.hero__badge-item--1 { top: 8%;  left: 2%; }
.hero__badge-item--2 { top: 32%; left: 4%; }
.hero__badge-item--3 { top: 56%; left: 1%; }
.hero__badge-item--4 { top: 80%; left: 5%; }

.hero-agent {
  position: absolute;
  top: 4%;
  right: 0;
  z-index: 3;
  width: 258px;
  padding: 16px;
  background: rgba(4, 16, 40, .88);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 16px;
  backdrop-filter: blur(6px);
  box-shadow: 0 20px 40px rgba(0, 8, 32, .45);
}

.hero-agent__head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .01em;
  color: #fff;
}

.hero-agent__head svg { flex: none; width: 20px; height: 20px; color: var(--cyan-300); }

.hero-agent__intro {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 17px;
  color: #b9cde6;
}

.hero-agent__options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.hero-agent__options a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 8px 10px;
  background: rgba(255, 255, 255, .06);
  border-radius: 9px;
  font-size: 13px;
  line-height: 15px;
  color: #dbe9fb;
  transition: background-color .18s ease;
}

.hero-agent__options a:hover { background: rgba(255, 255, 255, .14); }
.hero-agent__options a svg { flex: none; width: 12px; height: 12px; color: var(--cyan-300); }

.hero-agent__input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
  padding: 9px 12px;
  background: rgba(255, 255, 255, .07);
  border-radius: var(--radius-pill);
  font-size: 11.5px;
  color: #7f95b8;
}

.hero-agent__input svg { flex: none; width: 15px; height: 15px; color: var(--cyan-300); }

.hero-agent__field {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 11.5px;
  color: #fff;
}

.hero-agent__field::placeholder { color: #7f95b8; }

.hero-agent__send {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

.hero-agent__send svg { flex: none; width: 15px; height: 15px; color: var(--cyan-300); }

.hero-agent__status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 10px 0 0;
  font-size: 12.5px;
  color: #7bd99a;
}

.hero-agent__status i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #3fe07a;
  box-shadow: 0 0 0 3px rgba(63, 224, 122, .25);
}

.floating-chatbtn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px 14px 16px;
  background: linear-gradient(97deg, #0b86ff 0%, #0070fd 100%);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 14px 30px rgba(0, 92, 224, .5);
  transition: transform .18s ease, box-shadow .18s ease;
}

.floating-chatbtn:hover { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(0, 92, 224, .55); }
.floating-chatbtn svg { flex: none; width: 19px; height: 19px; }

.chatbox {
  position: fixed;
  right: 24px;
  bottom: 96px;
  z-index: 90;
}

.chatbox__panel {
  display: flex;
  flex-direction: column;
  width: 360px;
  max-width: calc(100vw - 32px);
  height: 480px;
  max-height: calc(100vh - 140px);
  background: rgba(4, 16, 40, .97);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 18px;
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 48px rgba(0, 8, 32, .5);
  overflow: hidden;
}

.chatbox__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: linear-gradient(97deg, #0b86ff 0%, #0070fd 100%);
  flex: none;
}

.chatbox__head-info { display: flex; align-items: center; gap: 10px; }

.chatbox__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 34px;
  height: 34px;
  background: rgba(255, 255, 255, .18);
  border-radius: 50%;
}

.chatbox__avatar svg { width: 19px; height: 19px; color: #fff; }

.chatbox__title { font-size: 13.5px; font-weight: 700; color: #fff; }

.chatbox__status {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 2px;
  font-size: 11px;
  color: rgba(255, 255, 255, .85);
}

.chatbox__status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3fe07a;
  box-shadow: 0 0 0 3px rgba(63, 224, 122, .3);
}

.chatbox__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, .14);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background-color .15s ease;
}

.chatbox__close:hover { background: rgba(255, 255, 255, .26); }
.chatbox__close svg { width: 15px; height: 15px; }

.chatbox__messages {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  overflow-y: auto;
}

.chatbox__msg {
  max-width: 85%;
  padding: 9px 12px;
  border-radius: 13px;
  font-size: 13.5px;
  line-height: 18px;
}

.chatbox__msg--bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, .08);
  border-bottom-left-radius: 4px;
  color: #dbe9fb;
}

.chatbox__msg--user {
  align-self: flex-end;
  background: linear-gradient(97deg, #0b86ff 0%, #0070fd 100%);
  border-bottom-right-radius: 4px;
  color: #fff;
}

.chatbox__msg--typing { display: inline-flex; align-items: center; gap: 4px; padding: 11px 14px; }

.chatbox__msg--typing i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #9fb4d6;
  animation: chatbox-typing 1s ease-in-out infinite;
}

.chatbox__msg--typing i:nth-child(2) { animation-delay: .15s; }
.chatbox__msg--typing i:nth-child(3) { animation-delay: .3s; }

@keyframes chatbox-typing {
  0%, 60%, 100% { opacity: .35; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-2px); }
}

.chatbox__form {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  flex: none;
}

.chatbox__input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  background: rgba(255, 255, 255, .07);
  border: none;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 13.5px;
  color: #fff;
  outline: none;
}

.chatbox__input::placeholder { color: #7f95b8; }

.chatbox__send {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 36px;
  height: 36px;
  background: linear-gradient(97deg, #0b86ff 0%, #0070fd 100%);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: transform .15s ease;
}

.chatbox__send:hover { transform: translateY(-2px); }
.chatbox__send svg { width: 15px; height: 15px; }

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  height: 52px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}

.btn svg { flex: none; width: 17px; height: 17px; }

.hero__actions .btn--primary { width: 197px; }
.hero__actions .btn--ghost   { width: 184px; gap: 13px; }

.btn--primary {
  background: linear-gradient(97deg, #0b7cff 0%, #0f6cfb 40%, #0043fe 100%);
  color: #fff;
  box-shadow: 0 8px 22px rgba(0, 78, 220, .38);
}

.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 78, 220, .48); }

.btn--ghost {
  border: 1.5px solid rgba(255, 255, 255, .92);
  color: #fff;
}

.btn--ghost:hover { background: rgba(255, 255, 255, .12); }

.btn--solid { background: linear-gradient(97deg, #0b86ff 0%, #0070fd 100%); color: #fff; box-shadow: 0 10px 24px rgba(0, 92, 224, .42); }
.btn--solid:hover { transform: translateY(-2px); }

.btn--sm { height: 36px; padding: 0 20px; font-size: 14px; gap: 10px; width: auto; margin-top: 20px; }

.btn--xs { height: 32px; padding: 0 16px; font-size: 14px; gap: 8px; width: auto; margin-top: 12px; }

/* --------------------------------------------------------------------------
   7. Problems ("Anh đang giải quyết bài toán nào?")
   -------------------------------------------------------------------------- */
.problems { padding: 24px 0 32px; background: var(--surface); }

.section-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: 0;
  color: var(--ink-title);
}

.problems__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}


.problems__head .link-more { margin-top: 0; }

.problems__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 326px;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: linear-gradient(160deg, #0052b8 0%, #0047a6 60%, #003c8f 100%);
  box-shadow: 0 10px 24px rgba(0, 46, 120, .13);
  transition: transform .22s ease, box-shadow .22s ease;
}

.pcard:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px rgba(0, 46, 120, .26);
}

.pcard__media {
  position: relative;
  height: 144px;
  flex: none;
  overflow: hidden;
}

.pcard__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 30, 80, 0) 55%, rgba(0, 40, 100, .35) 100%);
}

.pcard__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

.pcard:hover .pcard__media img { transform: scale(1.06); }

/* Badge lives in the body (not the media) so the image's overflow:hidden
   can't clip its lower half. */
.pcard__badge {
  position: absolute;
  left: 16px;
  top: -24px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: #fff;
  border: 3px solid #0052b8;
  border-radius: 50%;
  color: var(--blue-600);
  box-shadow: 0 8px 18px rgba(0, 20, 60, .3);
  transition: background-color .22s ease, color .22s ease;
}

.pcard__badge svg { width: 22px; height: 22px; }

.pcard:hover .pcard__badge { background: var(--cyan-400); color: #00235f; }

.pcard__body {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 36px 16px 18px;
  color: #fff;
}

.pcard__title {
  margin-top: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.15;
  letter-spacing: 0;
  color: #fff;
}

.pcard__text {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  color: #f2f8ff;
  flex: 1;
}

.pcard__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: #cfe2f7;
  transition: gap .18s ease, color .18s ease;
}

.pcard__link svg { flex: none; width: 14px; height: 14px; }
.pcard__link:hover { gap: 10px; color: #fff; }

/* --------------------------------------------------------------------------
   7b. Trust bar
   -------------------------------------------------------------------------- */
.trustbar { padding: 22px 0; background: linear-gradient(180deg, #001a4d, #001338); }

.trustbar__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trustbar__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
}

.trustbar__item:first-child { padding-left: 0; }
.trustbar__item:last-child { padding-right: 0; }

.trustbar__item + .trustbar__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 1px;
  background: rgba(255, 255, 255, .15);
}

.trustbar__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  color: var(--cyan-300);
}

.trustbar__icon svg { width: 21px; height: 21px; }

.trustbar__title { display: block; font-size: 14px; font-weight: 700; color: #fff; }
.trustbar__text { display: block; margin-top: 2px; font-size: 13.5px; line-height: 18px; color: #a9c6e8; }

/* --------------------------------------------------------------------------
   8. Why us
   -------------------------------------------------------------------------- */
.whyus {
  position: relative;
  height: auto;
  padding: 48px 0 56px;
  background:
    linear-gradient(180deg, rgba(0, 18, 52, .86) 0%, rgba(0, 24, 66, .72) 55%, rgba(0, 30, 80, .6) 100%),
    #0150b3 url("../images/whyus-bg.webp") center / cover no-repeat;
}

.whyus__head { max-width: 620px; margin-bottom: 28px; }

.whyus__title {
  font-family: var(--font-ui);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
}

.whyus__lead {
  margin-top: 10px;
  font-size: 15px;
  line-height: 22px;
  color: #cfe2f7;
}

.whyus .fcard {
  background: rgba(255, 255, 255, .96);
}

.fcard__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0a7cf5, #0046ad);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 6px 14px rgba(0, 60, 160, .3);
}

/* --------------------------------------------------------------------------
   9. Solution panel
   -------------------------------------------------------------------------- */
.solution { background: var(--surface); }

.solution__panel {
  position: relative;
  height: 234px;
  margin-right: max(var(--gutter), calc((100vw - var(--container)) / 2));
  overflow: hidden;
  background: #f7fafd url("../images/solution-panel.webp") right top / auto 100% no-repeat;
}

.solution__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: 36px var(--gutter) 0 calc(var(--gutter) + 12px);
}

.solution__title {
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-title);
}

.solution__text {
  max-width: 424px;
  margin-top: 17px;
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  color: #17376f;
}

.solution__content .btn {
  width: 178px;
  height: 44px;
  margin-top: 17px;
  padding: 0;
  gap: 13px;
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   10. Partners
   -------------------------------------------------------------------------- */
.partners { padding: 40px 0 48px; background: var(--surface); }


.partners__title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-title);
}

.partners__lead {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 400;
  color: #3f5f92;
}

.partners__list {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  align-items: center;
  margin-top: 24px;
}

.partners__item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 64px;
  padding: 0 18px;
}

.partners__item + .partners__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  height: 40px;
  border-left: 1px solid #dde6f1;
}

/* Logos are trimmed to their artwork, so one height cap keeps them visually
   even; very wide wordmarks are held back by max-width instead. */
.partners__item img {
  width: auto;
  height: auto;
  max-height: 38px;
  max-width: min(150px, 100%);
  object-fit: contain;
  transition: transform .2s ease;
}

.partners__item:hover img { transform: scale(1.05); }

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #001338 url("../images/footer-bg.webp") center / cover no-repeat;
  color: #fff;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.7fr 1.2fr 1fr;
  gap: 32px;
  min-height: 172px;
  padding-block: 32px 36px;
  align-items: start;
}

.footer__col { position: relative; padding-top: 0; }

.footer__col + .footer__col::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  height: 80px;
  border-left: 1px solid rgba(120, 175, 225, .35);
}

.footer__col--brand { padding-left: 0; }
.footer__col--links { padding-left: 32px; }
.footer__col--contact { padding-left: 32px; }
.footer__col--cta { padding-left: 32px; text-align: right; }

.footer__tagline { margin-top: 14px; max-width: 240px; font-size: 14px; line-height: 20px; color: #a9c6e8; }

.footer__label.footer__label--head { display: block; margin-bottom: 14px; font-size: 14px; font-weight: 600; color: #fff; }

.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: 14px; color: #c0d8f0; }
.footer__links a:hover { color: var(--cyan-300); }

.footer__bottom { border-top: 1px solid rgba(120, 175, 225, .25); }
.footer__bottom-inner { padding-block: 16px; font-size: 13px; color: #90aed4; text-align: center; }

.site-footer .brand { gap: 16px; margin-top: 0; }
.site-footer .brand__mark { width: 42px; height: 50px; }
.site-footer .brand__name { font-size: 20px; }
.site-footer .brand__sub  { font-size: 15px; }

.footer__social {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  transition: transform .2s ease, background-color .2s ease;
}

.footer__social a:hover { transform: translateY(-2px); background: var(--cyan-300); }

.footer__row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.footer__row svg { flex: none; margin-top: 1px; color: #7eb8f0; }

.footer__label {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  color: #c0d8f0;
}

.footer__phone {
  display: block;
  margin-top: 3px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
  color: #fff;
}

.footer__mail {
  font-size: 14px;
  font-weight: 400;
  color: #c0d8f0;
}

.footer__mail:hover { color: var(--cyan-300); }
.footer__addr { font-size: 14px; line-height: 20px; color: #c0d8f0; }

.footer__cta-text {
  margin-top: 0;
  max-width: 300px;
  margin-left: auto;
  font-size: 16px;
  text-wrap: balance;
  font-weight: 400;
  line-height: 24px;
  color: #c0d8f0;
}

.footer__col--cta .btn {
  width: auto;
  height: 44px;
  margin-top: 18px;
  padding: 0 24px;
  gap: 10px;
  font-size: 15px;
  margin-left: auto;
}

/* Narrow desktop (1024-1199px): the full nav + phone pill don't fit, so
   tighten the nav and collapse the phone pill to its icon. */
@media (min-width: 1024px) and (max-width: 1199px) {
  .main-nav { gap: 18px; margin-left: 28px; }
  .header__phone { width: 40px; padding: 0; justify-content: center; gap: 0; }
  .header__phone-num { display: none; }
}

/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1023px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    margin-left: auto;
    color: #fff;
  }

  .main-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    max-height: calc(100dvh - 56px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px 0;
    background: #00163e;
    box-shadow: 0 18px 30px rgba(0, 12, 40, .35);
    display: none;
  }

  .main-nav.is-open { display: flex; }

  .nav-link { padding: 12px 28px; }
  .nav-link::after { display: none; }

  .nav-group__menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    box-shadow: none;
    padding: 0 0 6px;
    display: none;
  }

  /* parent row: full-width tap target, chevron on the right, rotates only
     when the submenu is actually open */
  .has-sub > .nav-link { justify-content: space-between; width: 100%; }
  .has-sub > .nav-link svg { width: 14px; height: 14px; }
  .nav-group.is-open > .nav-link { color: var(--cyan-300); background: rgba(255, 255, 255, .04); }
  .nav-group.is-open > .nav-link svg { transform: rotate(180deg); }
  .nav-link:active { background: rgba(255, 255, 255, .06); }

  .nav-group.is-open .nav-group__menu { display: block; animation: navSub .18s ease; }
  .nav-group__menu a { padding: 12px 28px 12px 44px; color: #cfe2f6; }
  .nav-group__menu a:active,
  .nav-group__menu a.is-current { background: rgba(255, 255, 255, .06); color: #fff; }
  .nav-group__menu .nav-group__overview { display: block; font-weight: 600; }
  .main-nav { overscroll-behavior: contain; }
  .nav-toggle { border-radius: 8px; -webkit-tap-highlight-color: transparent; }
  .nav-toggle:active { background: rgba(255, 255, 255, .08); }

  .header__phone { margin-left: 12px; order: 3; flex: none; }
  .header__inner { padding-left: var(--gutter); }

  .problems__grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
  .problems__grid > .pcard { grid-column: span 2; }
  .problems__grid > .pcard:nth-child(n+4) { grid-column: span 3; }
  .problems__title { padding-left: 0; }

  .whyus { padding: 36px 0 40px; }

  .footer__inner { grid-template-columns: 1fr 1fr; gap: 28px 0; padding-block: 28px 32px; }
  .footer__col--links, .footer__col--contact { padding-left: 0; }
  .footer__col--cta { grid-column: 1 / -1; padding-left: 0; text-align: left; }
  .footer__col--cta::before { display: none; }
  .footer__cta-text { margin-left: 0; }
  .footer__col--cta .btn { margin-left: 0; }

  .solution__panel {
    height: auto;
    margin-right: 0;
    padding-bottom: 24vw;
    background-position: center bottom;
    background-size: 100% auto;
  }



  .pcard__text,
  .pcard:nth-child(3) .pcard__text,
  .pcard:nth-child(4) .pcard__text { width: auto; }

  .hero__grid { grid-template-columns: 1fr; padding-block: 32px; min-height: 0; }
  .hero { min-height: 0; }
  .hero__visual { display: none; }

  /* Single-column layout: the left-to-right desktop scrim no longer tracks
     where the text sits, so swap it for a flat wash that keeps contrast
     across the full width regardless of copy length (see rule further down
     for .phero, which is defined later in the cascade). */
  .hero::before {
    background: linear-gradient(180deg, rgba(0, 10, 34, .82) 0%, rgba(0, 14, 44, .88) 100%);
  }

  .trustbar__list { grid-template-columns: repeat(2, 1fr); row-gap: 18px; }
  .trustbar__item:nth-child(odd) { padding-left: 0; }
  .trustbar__item:nth-child(3)::before { display: none; }
}

@media (max-width: 719px) {
  .header__phone {
    width: 40px;
    padding: 0;
    justify-content: center;
    gap: 0;
  }

  .header__phone-num { display: none; }

  .nav-toggle { margin-left: auto; }

  .floating-chatbtn { right: 16px; bottom: 16px; padding: 13px; gap: 0; font-size: 0; border-radius: 50%; }
  .floating-chatbtn svg { width: 21px; height: 21px; }

  .chatbox { right: 12px; left: 12px; bottom: 84px; }
  .chatbox__panel { width: 100%; height: 65vh; max-height: 65vh; }

  .hero__grid { padding-block: 24px 30px; }
  .hero__title { font-size: 31px; line-height: 1.18; }
  .hero__tags { flex-wrap: wrap; gap: 8px; font-size: 14px; }
  .hero__tags li + li::before { display: none; }
  .hero__tags li { padding: 4px 11px; border: 1px solid rgba(127, 214, 255, .4); border-radius: 999px; background: rgba(10, 60, 130, .35); }
  .hero__actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  .problems__head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .problems__grid { grid-template-columns: 1fr; }
  .problems__grid > .pcard,
  .problems__grid > .pcard:nth-child(n+4) { grid-column: auto; }
  .pcard { min-height: 0; }
  .pcard__media { height: 168px; }
  .pcard__text { flex: none; }
  .pcard__title { white-space: normal; }
  .pcard__text { max-width: none; }

  .trustbar__list { grid-template-columns: 1fr; row-gap: 18px; }
  .trustbar__item { padding-left: 0; }
  .trustbar__item::before { display: none; }

  .partners__list { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 0; }
  .partners__item:nth-child(odd)::before { display: none; }
  .partners__item:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .partners__item { height: 56px; }
  .partners__item img { max-height: 30px; max-width: min(130px, 100%); }
  .partners { padding-bottom: 32px; }

  .footer__inner { grid-template-columns: 1fr; gap: 24px; padding-block: 24px 28px; }
  .footer__col + .footer__col::before { display: none; }
  .footer__col--links, .footer__col--contact { padding-left: 0; }
  .footer__col--cta { text-align: left; }
  .footer__cta-text { margin-left: 0; }
  .footer__col--cta .btn { margin-left: 0; }

  .solution__content { padding: 26px var(--gutter) 0; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* ==========================================================================
   13. Inner pages (Giải pháp / Sản phẩm)
   ========================================================================== */

/* --- page hero ---------------------------------------------------------- */
.phero {
  position: relative;
  background: #001741 center / cover no-repeat;
  color: #fff;
}

.phero--bld { background-image: url("../images/sol-bld-hero.webp"); }
.phero--news { background-image: url("../images/sol-bld-hero.webp"); }
.phero--edu { background-image: url("../images/sol-edu-hero.webp"); }
.phero--all { background-image: url("../images/sol-all-hero.webp"); }
.phero--prd { background-image: url("../images/prd-hero.webp"); }

.phero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,14,44,.94) 0%, rgba(0,16,50,.86) 36%, rgba(0,18,56,.35) 62%, rgba(0,20,60,0) 82%);
}

.phero--news::before { background: linear-gradient(90deg, rgba(3,20,56,.95) 0%, rgba(5,60,92,.84) 38%, rgba(5,82,112,.4) 64%, rgba(0,20,60,0) 86%); }

.phero__inner {
  position: relative;
  padding-block: 40px 44px;
}

.phero__inner > * { max-width: 760px; }

.phero__eyebrow {
  font-size: 16px;
  font-weight: 500;
  color: #8fd4ff;
}

.phero__eyebrow strong { color: #fff; font-weight: 700; }

.phero__title {
  margin-top: 12px;
  font-size: 46px;
  font-weight: 700;
  line-height: 1.12;
  text-transform: uppercase;
  color: #fff;
}

.phero__title span {
  display: block;
  margin-top: 4px;
  font-size: 34px;
  text-transform: none;
  color: var(--cyan-400);
}

.phero__lead {
  max-width: 560px;
  margin-top: 16px;
  font-size: 16px;
  line-height: 24px;
  color: #dceaf8;
}

.phero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 24px;
}

.phero__badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  line-height: 1.3;
  font-weight: 500;
  color: #eaf4ff;
}

.phero__badge i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  flex: none;
  border: 1.5px solid rgba(86, 196, 255, .8);
  border-radius: 50%;
  color: #6fd0ff;
}

.phero__badge svg { width: 16px; height: 16px; }

/* --- generic section ---------------------------------------------------- */
.psec { padding: 40px 0 12px; background: var(--surface); }
.psec--tint { background: var(--surface-tint); padding-bottom: 40px; }
.psec--last { padding-bottom: 48px; }

.psec__head { margin-bottom: 20px; }
.psec__head--spaced { margin-top: 40px; }

.psec__title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-title);
}

.psec__lead {
  margin-top: 8px;
  font-size: 16px;
  line-height: 24px;
  color: #40608f;
}

/* --- grids -------------------------------------------------------------- */
.grid { display: grid; gap: 16px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }
.grid--6 { grid-template-columns: repeat(6, 1fr); gap: 12px; }

/* Avoid a lonely last card with an empty slot beside it. */
@media (min-width: 720px) {
  .grid--2 > :last-child:nth-child(odd) { grid-column: 1 / -1; }

  .grid--3:where(:not(#prj-grid)) { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid--3:where(:not(#prj-grid)) > * { grid-column: span 2; }
  .grid--3:where(:not(#prj-grid)) > :nth-last-child(2):nth-child(3n+1),
  .grid--3:where(:not(#prj-grid)) > :last-child:nth-child(3n+2) { grid-column: span 3; }

  /* keep image height equal to the 1/3-width cards above (16:9 × 1.5) */
  .grid--3:where(:not(#prj-grid)) > :nth-last-child(2):nth-child(3n+1) > [class$="__media"],
  .grid--3:where(:not(#prj-grid)) > :last-child:nth-child(3n+2) > [class$="__media"] { aspect-ratio: 8 / 3; }
}

/* avoid single-word orphans in multi-line headings */
h1, h2, h3, .phero__title span { text-wrap: balance; }

/* --- feature card (icon + title + text) --------------------------------- */
.fcard {
  padding: 22px 18px 20px;
  text-align: center;
  background: #f4f8fd;
  border: 1px solid #e4edf8;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.fcard:hover { transform: translateY(-3px); box-shadow: 0 14px 28px rgba(0, 46, 120, .12); }

.fcard__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  color: var(--blue-600);
}

.fcard__icon svg { width: 36px; height: 36px; }

.fcard__title {
  margin-top: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-title);
}

.fcard__text {
  margin-top: 8px;
  font-size: 15px;
  line-height: 22px;
  color: #4b6a97;
}

/* --- media card (image + title + checklist + link) ---------------------- */
.mcard {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.mcard:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0, 46, 120, .14); }

.mcard__media { aspect-ratio: 16 / 9; overflow: hidden; background: #dce7f4; }
.mcard__media img { width: 100%; height: 100%; object-fit: cover; }

.mcard__body { flex: 1; display: flex; flex-direction: column; align-items: flex-start; padding: 14px 16px 18px; }
.mcard__body > * { max-width: 100%; }
/* pin the card CTA to the bottom so buttons line up across a row */
.mcard__body > .btn,
.mcard__body > .link-more { margin-top: auto; }
.mcard__body > .mcard__list { margin-bottom: 14px; }

.mcard__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  margin: -30px 0 6px;
  position: relative;
  background: linear-gradient(135deg, #0a7cf5, #0046ad);
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 6px 14px rgba(0, 60, 160, .35);
}

.mcard__badge svg { width: 17px; height: 17px; }

.mcard__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-title);
}

.mcard__subtitle {
  margin-top: 8px;
  font-size: 14px;
  line-height: 20px;
  color: #4b6a97;
}

.mcard__list { margin-top: 10px; }

.mcard__list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 6px;
  font-size: 15px;
  line-height: 21px;
  color: #40608f;
}

.mcard__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 12px; height: 12px;
  border: 1.4px solid var(--blue-500);
  border-radius: 3px;
  background: #fff;
}

.mcard__list li::after {
  content: "";
  position: absolute;
  left: 3px; top: 7px;
  width: 6px; height: 3px;
  border-left: 1.5px solid var(--blue-500);
  border-bottom: 1.5px solid var(--blue-500);
  transform: rotate(-45deg);
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--blue-600);
}

.link-more i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  background: var(--blue-600);
  border-radius: 50%;
  color: #fff;
  transition: transform .2s ease;
}

.link-more i svg { width: 12px; height: 12px; }
.link-more:hover { text-decoration: underline; }
.link-more:hover i { transform: translateX(2px); }

/* --- overlay tile (image + caption bar) --------------------------------- */
.tile {
  display: block;
  overflow: hidden;
  border-radius: 8px;
  background: #0a49ad;
  transition: transform .2s ease, box-shadow .2s ease;
}

.tile:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(0, 46, 120, .2); }

.tile__media { display: block; aspect-ratio: 16 / 9; overflow: hidden; }
.tile__media img { width: 100%; height: 100%; object-fit: cover; }

.tile__cap { display: block; padding: 9px 12px 11px; color: #fff; }
.tile__cap b { display: block; font-size: 15px; font-weight: 700; }
.tile__cap span { display: block; margin-top: 3px; font-size: 14px; line-height: 19px; color: #d8e9ff; }

/* --- project / field card ------------------------------------------------ */
.pj {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 8px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.pj:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(0, 46, 120, .14); }
.pj__media { aspect-ratio: 16 / 10; overflow: hidden; background: #dce7f4; }
.pj__media img { width: 100%; height: 100%; object-fit: cover; }
.pj__body { padding: 10px 12px 12px; }
.pj__title { font-size: 15px; font-weight: 600; color: var(--ink-title); }
/* whole card is the hit area when its title is a link */
.pj__title a::after { content: ""; position: absolute; inset: 0; }
.pj:hover .pj__title a { color: var(--blue-600); }
.pj__media img { transition: transform .45s ease; }
.pj:hover .pj__media img { transform: scale(1.05); }

.pj__meta {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 6px;
  font-size: 14px;
  color: #5c7aa6;
}

.pj__meta svg { width: 12px; height: 12px; flex: none; color: var(--blue-500); }

/* --- CTA band ------------------------------------------------------------ */
.cta-band {
  position: relative;
  overflow: hidden;
  background: #00194a url("../images/whyus-bg.webp") center / cover no-repeat;
  color: #fff;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,16,48,.94) 0%, rgba(0,22,62,.86) 55%, rgba(0,26,74,.7) 100%);
}

.cta-band__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 26px 0 28px;
  flex-wrap: wrap;
}

.cta-band .brand { flex: none; }
.cta-band__body { flex: 1 1 340px; }

.cta-band__title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  color: #fff;
}

.cta-band__title em { font-style: normal; color: var(--cyan-400); }

.cta-band__text { margin-top: 7px; font-size: 16px; color: #d9e8f8; }

.cta-band__points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 14px;
}

.cta-band__points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #e6f1fc;
}

.cta-band__points i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  flex: none;
  border: 1.3px solid rgba(100, 200, 255, .7);
  border-radius: 50%;
  color: #7fd6ff;
}

.cta-band__points svg { width: 13px; height: 13px; }
.cta-band .btn { flex: none; width: auto; height: 44px; padding: 0 24px; font-size: 15px; gap: 10px; }

/* --- split panel (dark card with photo) ---------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 18px;
  align-items: stretch;
}

.split__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  overflow: hidden;
  padding: 32px 28px;
  border-radius: 12px;
  background: #062350 url("../images/edu-path.webp") right center / cover no-repeat;
  color: #fff;
}

.split__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(95deg, rgba(3,20,54,.95) 0%, rgba(4,26,66,.82) 52%, rgba(6,32,78,.55) 100%);
}

.split__panel > * { position: relative; }

.split__title { font-size: 26px; font-weight: 700; line-height: 1.2; }
.split__title--sm { font-size: 24px; }
.split__text { max-width: 360px; margin-top: 10px; font-size: 15px; line-height: 23px; color: #cfe2f7; }
.split__text--wide { max-width: none; }
.split__panel--about { background-image: url("../images/prj-2.webp"); }

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-self: stretch;
  margin: 26px 0 28px;
}

.steps li {
  position: relative;
  text-align: center;
  font-size: 14px;
  line-height: 19px;
  color: #dceaf8;
}

/* connector between consecutive steps (replaces the old inline "+" items) */
.steps li:not(.steps__plus) + .steps__plus + li::before {
  content: "";
  position: absolute;
  top: 23px;
  right: calc(50% + 30px);
  width: calc(100% - 48px);
  border-top: 1.5px dashed rgba(127, 214, 255, .45);
}

.steps .steps__plus { display: none; }

.steps li i {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  margin: 0 auto 10px;
  background: rgba(10, 60, 130, .55);
  border: 1.4px solid rgba(94, 198, 255, .75);
  border-radius: 12px;
  color: #7fd6ff;
}

.steps li i svg { width: 20px; height: 20px; }

.split__side { display: flex; flex-direction: column; justify-content: center; }

/* --- course card --------------------------------------------------------- */
.course {
  display: flex;
  gap: 12px;
  padding: 13px 14px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  transition: box-shadow .2s ease, transform .2s ease;
}

.course:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(0,46,120,.12); }

.course__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  flex: none;
  background: #e8f2ff;
  border-radius: 9px;
  color: var(--blue-600);
}

.course__icon svg { width: 20px; height: 20px; }
.course__title { font-size: 15px; font-weight: 700; color: var(--ink-title); }

.tagrow { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }

.tag {
  display: inline-block;
  padding: 2px 9px;
  font-size: 13px;
  line-height: 20px;
  font-weight: 500;
  border-radius: 999px;
  background: #e8f2ff;
  color: #1a5fbd;
}

.tag--warn { background: #fff0dd; color: #a35b0b; }
.course__text { margin-top: 8px; font-size: 14px; line-height: 20px; color: #4b6a97; }

/* --- quote card ---------------------------------------------------------- */
.quote {
  display: flex;
  flex-direction: column;
  padding: 18px 18px 16px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
}

.quote__mark { height: 28px; font-family: Georgia, 'Times New Roman', serif; font-size: 56px; font-weight: 700; line-height: 1; color: var(--blue-500); opacity: .35; }
.quote__text { flex: 1; margin-top: 6px; font-size: 14px; line-height: 21px; color: #35527f; }

.quote__by { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid #edf3fa; }
.quote__by img { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; flex: none; }
.quote__by b { display: block; font-size: 14px; color: var(--ink-title); }
.quote__by span { display: block; font-size: 14px; color: #5c7aa6; }

/* --- product band -------------------------------------------------------- */
.pband {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: linear-gradient(105deg, #013a8e 0%, #0150b6 48%, #0160cf 100%);
  color: #fff;
}

.pband__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 20px;
  align-items: center;
  padding: 24px 26px;
}

.pband__title { font-size: 26px; font-weight: 700; }
.pband__text { max-width: 420px; margin-top: 8px; font-size: 15px; line-height: 22px; color: #d5e7fb; }

.pband__logos { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }

.pband__logos span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  background: #fff;
  border-radius: 7px;
}

.pband__logos img { height: 20px; width: auto; }
.pband__art { position: relative; }
.pband__art img { width: 100%; border-radius: 10px; }
.pband__inner .btn { margin-top: 14px; height: 38px; padding: 0 22px; font-size: 14px; gap: 10px; width: auto; }

/* --- numbered heading ---------------------------------------------------- */
.psec__title em {
  font-style: normal;
  margin-right: 6px;
  color: var(--blue-600);
}

/* --- device card --------------------------------------------------------- */
.dcard {
  padding: 12px 12px 14px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}

.dcard:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(0,46,120,.12); }
.dcard__media { height: 68px; display: flex; align-items: center; justify-content: center; }
.dcard__media img { max-height: 100%; width: auto; }
.dcard__title { margin-top: 8px; font-size: 15px; font-weight: 700; color: var(--blue-600); }
.dcard__text { margin-top: 5px; font-size: 14px; line-height: 20px; color: #5c7aa6; }

/* --- software card ------------------------------------------------------- */
.scard {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
}

.scard__media { width: 82px; flex: none; }
.scard__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; }
.scard b { display: block; font-size: 15px; color: var(--ink-title); }
.scard span { display: block; margin-top: 4px; font-size: 14px; color: #5c7aa6; }

.scard__meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 14px;
  color: #40608f;
}

.scard__meta svg { width: 13px; height: 13px; color: var(--blue-600); }

/* --- inner-page responsive ----------------------------------------------- */
@media (max-width: 1023px) {
  .grid--5, .grid--6 { grid-template-columns: repeat(3, 1fr); }
  /* 5 items on 3 columns: widen the last two so the second row is full */
  .grid--5 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid--5 > * { grid-column: span 2; }
  .grid--5 > :nth-child(n+4):nth-last-child(-n+2) { grid-column: span 3; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .pband__inner { grid-template-columns: 1fr; }
  .phero__title { font-size: 38px; }
  .phero__title span { font-size: 28px; }

  /* Same flat-wash fix as .hero: at this width phero__inner's text can run
     past the point where the desktop left-to-right scrim has faded out. */
  .phero::before {
    background: linear-gradient(180deg, rgba(0, 10, 34, .82) 0%, rgba(0, 14, 44, .88) 100%);
  }
  .phero--news::before { background: linear-gradient(180deg, rgba(3, 22, 58, .84) 0%, rgba(4, 46, 72, .88) 100%); }
}

@media (max-width: 719px) {
  .grid--2, .grid--3, .grid--4, .grid--5, .grid--6 { grid-template-columns: 1fr; }
  .grid--5 > *,
  .grid--5 > :nth-child(n+4):nth-last-child(-n+2) { grid-column: auto; }
  .phero__inner { padding-block: 28px 32px; }
  .phero__title { font-size: 30px; }
  .phero__title span { font-size: 22px; }
  .psec__title,
  .partners__title { font-size: 25px; }
  .cta-band__inner { gap: 20px; }
  .cta-band .btn { width: 100%; }
}

/* inline icon sizing inside generated components */
.link-more i svg,
.mcard__badge svg,
.course__icon svg,
.phero__badge svg,
.cta-band__points svg,
.steps li i svg,
.scard__meta svg,
.pj__meta svg { flex: none; }

.mcard__title span svg { width: 18px; height: 18px; }

.mcard__icon-inline {
  display: inline-flex;
  vertical-align: -4px;
  width: 18px;
  height: 18px;
  margin-right: 6px;
  color: var(--blue-600);
}

@media (max-width: 719px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 20px; }
  .steps li::before { display: none; }
  .split__panel { background-position: right bottom; }
  .scard__media { width: 96px; }
}

/* ==========================================================================
   14. Dự án / Liên hệ / Giới thiệu / Tin tức
   ========================================================================== */
.phero--prj { background-image: url("../images/prj-hero.webp"); }
.phero--ct  { background-image: url("../images/ct-hero.webp"); }

/* --- layout with sidebar ------------------------------------------------- */
.with-aside {
  display: grid;
  grid-template-columns: 218px 1fr;
  gap: 22px;
  align-items: start;
}

.aside-card {
  padding: 16px 16px 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
}

.aside-card + .aside-card { margin-top: 16px; }

.aside-card__head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ink-title);
}

.aside-card__head svg { width: 20px; height: 20px; color: var(--blue-600); }

.aside-card h4 {
  margin: 0 0 9px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-title);
}

.aside-card h4 + .field { margin-top: -2px; }
.aside-card .field + h4,
.aside-card .check + h4 { margin-top: 16px; }

.check {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 0;
  font-size: 15px;
  color: #40608f;
  cursor: pointer;
}

.check input { position: absolute; opacity: 0; pointer-events: none; }

.check i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  flex: none;
  border: 1.4px solid #bcd0e8;
  border-radius: 4px;
  background: #fff;
  color: transparent;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

.check i svg { width: 11px; height: 11px; }
.check input:checked + i { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }
.check input:focus-visible + i { outline: 2px solid var(--cyan-400); outline-offset: 2px; }
.check:hover { color: var(--blue-600); }

.field { position: relative; margin-bottom: 12px; }

.field select,
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--ink-title);
  background: #fff;
  border: 1px solid #d8e4f2;
  border-radius: 7px;
  padding: 10px 12px;
}

.field select { appearance: none; padding-right: 30px; background-image: none; }

.field--select::after {
  content: "";
  position: absolute;
  right: 12px; top: 50%;
  width: 7px; height: 7px;
  margin-top: -5px;
  border-right: 1.6px solid #6d8bb4;
  border-bottom: 1.6px solid #6d8bb4;
  transform: rotate(45deg);
  pointer-events: none;
}

.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(11,124,255,.14); }

.aside-card .btn { width: 100%; height: 40px; font-size: 15px; margin-top: 4px; }

/* --- section header with side link --------------------------------------- */
.psec__head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.psec__head--row .psec__title { display: flex; align-items: center; gap: 9px; }
.psec__head--row .psec__title svg { width: 22px; height: 22px; color: #f5a623; }

/* --- project card -------------------------------------------------------- */
.prj {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.prj:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0,46,120,.14); }
.prj__media img { transition: transform .45s ease; }
.prj:hover .prj__media img { transform: scale(1.05); }

.prj__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #dce7f4; }
.prj__media img { width: 100%; height: 100%; object-fit: cover; }

.prj__tag {
  position: absolute;
  left: 10px; bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(2, 26, 66, .82);
  font-size: 14px;
  font-weight: 500;
  color: #fff;
}

.prj__tag svg { width: 13px; height: 13px; }

.prj__body { flex: 1; display: flex; flex-direction: column; padding: 13px 14px 15px; }
.prj__title { font-size: 16px; font-weight: 700; color: var(--ink-title); }

.prj__loc {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 6px;
  font-size: 14px;
  color: #5c7aa6;
}

.prj__loc svg { width: 12px; height: 12px; flex: none; color: var(--blue-500); }
.prj__text { flex: 1; margin-top: 9px; font-size: 14px; line-height: 21px; color: #4b6a97; }

.prj__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 14px 0;
  padding-top: 12px;
  border-top: 1px solid #edf3fa;
}

.prj__stats li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
  font-size: 13px;
  line-height: 17px;
  color: #40608f;
}

.prj__stats i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  flex: none;
  background: #e8f2ff;
  border-radius: 7px;
  color: var(--blue-600);
}

.prj__stats svg { width: 14px; height: 14px; }
.prj__stats b { display: block; font-size: 14px; font-weight: 700; color: var(--ink-title); }

.prj__body .btn {
  width: 100%;
  height: 38px;
  margin-top: auto;
  font-size: 15px;
  background: #f1f7ff;
  border: 1px solid #d5e5f8;
  color: var(--blue-600);
  box-shadow: none;
}

.prj__body .btn:hover { background: var(--blue-600); border-color: var(--blue-600); color: #fff; transform: none; }

/* --- promo card in sidebar ----------------------------------------------- */
.promo {
  position: relative;
  overflow: hidden;
  padding: 18px 16px 20px;
  border-radius: 10px;
  background: linear-gradient(150deg, #02205a 0%, #01337f 60%, #0148a8 100%);
  color: #fff;
}

.promo h3 { font-size: 19px; font-weight: 700; line-height: 1.25; text-transform: uppercase; }
.promo p { margin-top: 8px; font-size: 14px; line-height: 21px; color: #d3e5fa; }
.promo .btn { width: auto; height: 38px; padding: 0 18px; margin-top: 14px; font-size: 15px; }

/* --- stats band ---------------------------------------------------------- */
.stats-band {
  position: relative;
  overflow: hidden;
  background: #01255f url("../images/whyus-bg.webp") center / cover no-repeat;
  color: #fff;
}

.stats-band::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,22,64,.93), rgba(0,34,88,.82));
}

.stats-band__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 26px;
  flex-wrap: wrap;
  padding: 22px 0 24px;
}

.stats-band__lead { display: flex; align-items: center; gap: 14px; flex: 1 1 280px; }
.stats-band__lead > i { display: inline-flex; color: #6fd0ff; }
.stats-band__lead > i svg { width: 38px; height: 38px; }
.stats-band__lead h2 { font-size: 22px; font-weight: 700; text-transform: uppercase; }
.stats-band__lead p { margin-top: 4px; font-size: 15px; color: #cfe2f7; }

.stats-band__list { display: flex; gap: 24px; flex-wrap: wrap; }
.stats-band__list li { display: flex; align-items: center; gap: 10px; }

.stats-band__list i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  flex: none;
  border: 1.4px solid rgba(110, 200, 255, .65);
  border-radius: 50%;
  color: #7fd6ff;
}

.stats-band__list svg { width: 16px; height: 16px; }
.stats-band__list b { display: block; font-size: 24px; font-weight: 700; line-height: 1.1; }
.stats-band__list span { display: block; font-size: 14px; color: #cfe2f7; }
.stats-band .btn { flex: none; width: auto; height: 44px; padding: 0 24px; font-size: 15px; }

/* --- contact page -------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.08fr; gap: 20px; align-items: start; }

.panel {
  padding: 22px 22px 24px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 12px;
}

.panel--tint { background: #f6fafe; }

.panel__head { display: flex; align-items: center; gap: 13px; margin-bottom: 18px; }

.panel__head > i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(140deg, #0a7cf5, #0046ad);
  color: #fff;
}

.panel__head > i svg { width: 21px; height: 21px; }
.panel__head h2 { font-size: 23px; font-weight: 700; text-transform: uppercase; color: var(--ink-title); }
.panel__head p { margin-top: 3px; font-size: 15px; color: #4b6a97; }
.panel__subtitle { font-size: 16px; font-weight: 700; color: var(--blue-600); text-transform: none; }

.clist li { display: flex; align-items: flex-start; gap: 13px; padding: 9px 0; }

.clist i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(140deg, #0a7cf5, #0046ad);
  color: #fff;
}

.clist svg { width: 17px; height: 17px; }
.clist b { display: block; font-size: 16px; font-weight: 700; color: var(--ink-title); }
.clist span { display: block; margin-top: 2px; font-size: 14px; color: #5c7aa6; }
.clist a:hover b { color: var(--blue-600); }

.hr { height: 1px; margin: 16px 0; background: #e6eef8; border: 0; }

.social-row { display: flex; gap: 16px; margin-top: 4px; }
.social-row li { display: flex; flex-direction: column; align-items: center; text-align: center; font-size: 14px; color: #5c7aa6; }

.social-row a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  margin-bottom: 6px;
  border-radius: 50%;
  background: linear-gradient(140deg, #1877f2, #0b4fc0);
  color: #fff;
  transition: transform .2s ease;
}

.social-row li:nth-child(2) a { background: linear-gradient(140deg, #ff3b30, #c62828); }
.social-row li:nth-child(3) a { background: linear-gradient(140deg, #0a84ff, #0044a8); }
.social-row li:nth-child(4) a { background: linear-gradient(140deg, #0a66c2, #063f7a); }
.social-row a:hover { transform: translateY(-2px); }
.social-row svg { width: 18px; height: 18px; }

.map { position: relative; display: block; margin-top: 18px; border-radius: 10px; overflow: hidden; border: 1px solid #e3ecf7; }
.map img { width: 100%; display: block; transition: transform .4s ease; }
.map:hover img { transform: scale(1.03); }
.map__cta {
  position: absolute;
  right: 12px; bottom: 12px;
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--blue-600);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(0, 46, 120, .3);
}

.form-grid { display: grid; gap: 0; }

.field--icon input,
.field--icon textarea,
.field--icon select { padding: 22px 11px 9px 40px; }

.field--icon > i {
  position: absolute;
  left: 13px; top: 15px;
  color: var(--blue-600);
  pointer-events: none;
}

.field--icon > i svg { width: 16px; height: 16px; }

.field__label {
  position: absolute;
  left: 40px; top: 9px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-title);
  pointer-events: none;
}

.field__label span { color: #e0332f; }
.field textarea { min-height: 116px; resize: vertical; }
.form-note { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 12px; font-size: 14px; color: #4b6a97; }
.form-note svg { width: 16px; height: 16px; color: var(--blue-600); }
.panel .btn--solid { width: 100%; height: 50px; font-size: 17px; margin-top: 4px; }

/* --- slogan band --------------------------------------------------------- */
.slogan {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #02234f url("../images/whyus-bg.webp") center / cover no-repeat;
  color: #fff;
}

.slogan::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(1,20,52,.95), rgba(2,34,86,.78));
}

.slogan__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 22px 26px;
  flex-wrap: wrap;
}

.slogan__inner .brand { flex: none; }
.slogan__inner .brand__mark { width: 40px; height: 48px; }
.slogan__body { flex: 1 1 320px; }
.slogan__title { font-size: 24px; font-weight: 600; font-style: italic; }
.slogan__points { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 12px; }
.slogan__points li { display: flex; align-items: center; gap: 8px; font-size: 15px; color: #dceaf8; }
.slogan__points svg { width: 18px; height: 18px; color: #7fd6ff; }
.slogan__cta { flex: none; height: 46px; padding: 0 24px; gap: 10px; }
@media (max-width: 719px) {
  .slogan__cta { width: 100%; }

  /* comfortable tap targets for inline text links on phones */
  .link-more, .pcard__link { padding-block: 10px; }
  .pcard__link { margin-top: 2px; }
}

/* --- about page ---------------------------------------------------------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.stat {
  padding: 20px 16px;
  text-align: center;
  background: #f4f8fd;
  border: 1px solid #e4edf8;
  border-radius: 10px;
}

.stat b { display: block; font-size: 36px; font-weight: 700; line-height: 1; color: var(--blue-600); }
.stat span { display: block; margin-top: 7px; font-size: 15px; color: #4b6a97; }

.timeline { position: relative; padding-left: 22px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px; background: #d7e6f7; }
.timeline li { position: relative; padding-bottom: 18px; }
.timeline li::before { content: ""; position: absolute; left: -21px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--blue-600); box-shadow: 0 0 0 3px #dbeafe; }
.timeline b { display: block; font-size: 16px; color: var(--ink-title); }
.timeline p { margin-top: 4px; font-size: 15px; line-height: 22px; color: #4b6a97; }

/* --- team card + AI centre banner (about page) --------------------------- */
.team {
  position: relative;
  padding: 22px 20px 22px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 12px;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}

.team::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: linear-gradient(90deg, #0a7cf5, #17c8f5);
  opacity: 0;
  transition: opacity .2s ease;
}

.team:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0, 46, 120, .12); }
.team:hover::before { opacity: 1; }

.team__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(140deg, #e3f0ff, #d2e7ff);
  color: var(--blue-600);
}

.team__icon svg { width: 26px; height: 26px; }
.team__title { margin-top: 16px; font-size: 18px; font-weight: 700; color: var(--ink-title); }
.team__text { margin-top: 8px; font-size: 15px; line-height: 22px; color: #4b6a97; }

.teamai {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
  padding: 24px 28px;
  border-radius: 12px;
  background: linear-gradient(105deg, #012a6b 0%, #0146a5 60%, #0160cf 100%);
  color: #fff;
}

.teamai__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(127, 214, 255, .45);
  color: #7fd6ff;
}

.teamai__icon svg { width: 28px; height: 28px; }
.teamai__body { flex: 1; min-width: 0; }
.teamai__title { font-size: 20px; font-weight: 700; }
.teamai__text { margin-top: 6px; max-width: 70ch; font-size: 15px; line-height: 23px; color: #cfe2f7; }
.teamai__cta { flex: none; height: 46px; padding: 0 22px; gap: 10px; }

@media (max-width: 719px) {
  .team { display: grid; grid-template-columns: 48px 1fr; column-gap: 14px; padding: 16px; }
  .team__icon { grid-row: span 2; width: 48px; height: 48px; }
  .team__title { margin-top: 0; font-size: 17px; }
  .team__text { margin-top: 4px; }
  .teamai { flex-direction: column; align-items: flex-start; padding: 22px 20px; }
  .teamai__cta { width: 100%; }
}

/* --- news ---------------------------------------------------------------- */
.news {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.news:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0,46,120,.14); }
.news__media { aspect-ratio: 16 / 9; overflow: hidden; background: #dce7f4; }
.news__media img { width: 100%; height: 100%; object-fit: cover; }
.news__body { flex: 1; display: flex; flex-direction: column; padding: 13px 15px 16px; }

.news__meta { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #5c7aa6; }
.news__meta .tag { padding: 2px 8px; }
.news__title { margin-top: 8px; font-size: 17px; font-weight: 700; line-height: 1.3; color: var(--ink-title); }
.news__text { margin-top: 7px; font-size: 14px; line-height: 21px; color: #4b6a97; }
.news .link-more { margin-top: auto; padding-top: 12px; }

.news--wide { flex-direction: row; }
.news--wide .news__media { flex: 0 0 46%; aspect-ratio: auto; }
.news--wide .news__title { font-size: 21px; }
.news--compact .news__title { font-size: 13px; }
.news--wide .news__body { padding: 18px 20px 20px; }

/* --- responsive ---------------------------------------------------------- */
@media (max-width: 1023px) {
  .with-aside { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .news--wide { flex-direction: column; }
  .news--wide .news__media { flex: none; aspect-ratio: 16 / 9; }
}

@media (max-width: 719px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat { padding: 16px 10px; }
  .stat b { font-size: 30px; }
  .stats-band__list { gap: 16px; }
  .stats-band .btn { width: 100%; }
  .psec__head--row { flex-direction: column; align-items: flex-start; gap: 6px; }
  .slogan__inner { padding: 20px 18px; gap: 18px; }
}

.news__meta svg { width: 13px; height: 13px; color: var(--blue-500); }
.news__meta { flex-wrap: nowrap; }

/* ==========================================================================
   15. AIoT Platform / Trung tâm AI
   ========================================================================== */
.phero--iot { background-image: url("../images/iot-hero.webp"); }
.phero--ai  { background-image: url("../images/ai-hero.webp"); }

/* --- boxed section (white card on tinted page) --------------------------- */
.boxed {
  padding: 22px 22px 24px;
  background: #fff;
  border: 1px solid #e6eef8;
  border-radius: 12px;
}

.boxed + .boxed { margin-top: 18px; }

.boxed__head { display: flex; align-items: center; flex-wrap: wrap; gap: 11px; margin-bottom: 16px; }

.boxed__head > i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  flex: none;
  border-radius: 9px;
  background: #e8f2ff;
  color: var(--blue-600);
}

.boxed__head > i svg { width: 19px; height: 19px; }
.boxed__head h2 { font-size: 23px; font-weight: 700; color: var(--ink-title); }
.boxed__head p { flex: 1 0 calc(100% - 45px); margin: -4px 0 0 45px; font-size: 15px; color: #4b6a97; font-weight: 400; }
.boxed__head + .psec__lead { margin-top: 0; }
.boxed__head--row { justify-content: space-between; }
.boxed__head--row > span { display: flex; align-items: center; gap: 11px; }
.boxed__head--row .link-more { margin-top: 0; }
.boxed__head--sub { margin-top: 24px; }

/* --- app tile (image + caption row with icon) ---------------------------- */
.app {
  display: block;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 9px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.app:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(0,46,120,.14); }
.app__media { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: #dce7f4; }
.app__media img { width: 100%; height: 100%; object-fit: cover; }

.app__cap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px 12px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-title);
}

.app__cap i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  flex: none;
  border-radius: 6px;
  background: #e8f2ff;
  color: var(--blue-600);
}

.app__cap svg { width: 12px; height: 12px; }

/* --- architecture diagram ------------------------------------------------ */
.arch { display: grid; grid-template-columns: 1fr 1.25fr 1fr; gap: 14px; align-items: center; }

.arch__col {
  padding: 14px 14px 16px;
  background: #f6fafe;
  border: 1px solid #e0ebf8;
  border-radius: 10px;
}

.arch__col h3 {
  margin-bottom: 11px;
  font-size: 17px;
  font-weight: 700;
  text-align: center;
  color: var(--ink-title);
}

.arch__col li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  font-size: 17px;
  color: #40608f;
}

.arch__col li i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  flex: none;
  border-radius: 8px;
  background: #fff;
  border: 1px solid #dce9f8;
  color: var(--blue-600);
}

.arch__col li svg { width: 15px; height: 15px; }

.arch__core {
  position: relative;
  padding: 16px 16px 18px;
  border-radius: 12px;
  background: linear-gradient(150deg, #0a6fe0 0%, #0450bb 55%, #023a95 100%);
  color: #fff;
  box-shadow: 0 14px 30px rgba(0, 62, 160, .28);
}

.arch__core h3 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-bottom: 13px;
  font-size: 18px;
  font-weight: 700;
}

.arch__core h3 svg { width: 20px; height: 20px; }

.arch__core li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding: 8px 12px;
  font-size: 17px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
}

.arch__core li svg { width: 15px; height: 15px; flex: none; }

.arch__link { text-align: center; font-size: 17px; color: #5c7aa6; margin-top: 12px; }
.arch__link b { display: block; margin-bottom: 4px; color: var(--blue-600); font-size: 17px; }

/* --- value band ---------------------------------------------------------- */
.value-band {
  position: relative;
  overflow: hidden;
  padding: 20px 22px 22px;
  border-radius: 12px;
  background: linear-gradient(105deg, #021b4c 0%, #023072 55%, #01418f 100%);
  color: #fff;
}

.value-band__head { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.value-band__head svg { width: 22px; height: 22px; color: #7fd6ff; }
.value-band__head h2 { font-size: 20.5px; font-weight: 700; text-transform: uppercase; }

.value-band__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }

.value-band__list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  line-height: 22px;
  color: #dceaf8;
}

.value-band__list li + li { border-left: 1px solid rgba(140,190,240,.28); padding-left: 14px; }

.value-band__list i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  flex: none;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: #7fd6ff;
}

.value-band__list svg { width: 15px; height: 15px; }

/* --- logo strip ---------------------------------------------------------- */
.logo-strip { display: flex; flex-wrap: wrap; gap: 12px; }

.logo-strip li {
  flex: 1 1 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 58px;
  padding: 0 6px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 8px;
}

.logo-strip img { max-height: 54px; max-width: 100%; width: auto; object-fit: contain; }

/* --- service card (big round icon) --------------------------------------- */
.svc {
  display: flex;
  gap: 14px;
  padding: 16px 16px 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.svc:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0,46,120,.14); }

.svc__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(140deg, #1b8bff, #0043a8);
  color: #fff;
  box-shadow: 0 8px 18px rgba(0,70,180,.28);
}

.svc__icon svg { width: 24px; height: 24px; }
.svc > div { flex: 1; display: flex; flex-direction: column; align-items: flex-start; }
.svc > div > .link-more { margin-top: auto; padding-top: 12px; }
.svc h3 { font-size: 18px; font-weight: 700; color: var(--ink-title); }
.svc p { margin-top: 7px; font-size: 17px; line-height: 23px; color: #4b6a97; }

/* --- mini stats ---------------------------------------------------------- */
.mini-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; }

.mini-stats li {
  padding: 13px 10px;
  background: #f4f9fe;
  border: 1px solid #e0ebf8;
  border-radius: 9px;
}

.mini-stats b { display: block; font-size: 27.5px; font-weight: 700; line-height: 1; color: var(--blue-600); }
.mini-stats span { display: block; margin-top: 6px; font-size: 17px; line-height: 22px; color: #4b6a97; }

/* --- use case (plain image + text) --------------------------------------- */
.ucase__media { display: block; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 9px; background: #dce7f4; }
.ucase__media img { width: 100%; height: 100%; object-fit: cover; }
.ucase h3 { margin-top: 10px; font-size: 17px; font-weight: 700; color: var(--ink-title); }
.ucase p { margin-top: 5px; font-size: 17px; line-height: 23px; color: #4b6a97; }

/* --- media panel with caption -------------------------------------------- */
.media-panel { position: relative; border-radius: 12px; overflow: hidden; }
.media-panel img { width: 100%; display: block; }

.media-panel figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 18px 14px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(180deg, rgba(0,20,60,0), rgba(0,20,60,.85));
}

.grid--ai-intro { grid-template-columns: 1fr 1fr; gap: 20px; align-items: center; }
.grid--iot-features { grid-template-columns: 1.35fr 1fr; gap: 18px; align-items: start; }
.grid--tight { gap: 12px; }

/* --- responsive ---------------------------------------------------------- */
@media (max-width: 1023px) {
  .arch { grid-template-columns: 1fr; }
  .value-band__list { grid-template-columns: repeat(2, 1fr); }
  .value-band__list li + li { border-left: 0; padding-left: 0; }
  .mini-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 719px) {
  .value-band__list { grid-template-columns: 1fr; }
  .svc { flex-direction: column; }
  .boxed { padding: 18px 16px 20px; }
  .grid--ai-intro, .grid--iot-features { grid-template-columns: 1fr; }
}

.boxed .fcard { padding: 18px 12px 16px; }
.boxed .fcard__text { font-size: 14px; line-height: 19.5px; }

#prj-grid { margin-top: 18px; }
#prj-count { scroll-margin-top: 72px; }
.prj-empty { padding: 32px 0; text-align: center; font-size: 15px; color: #4b6a97; }
.prj-empty a { color: var(--blue-600); font-weight: 600; }

.btn.is-loading { opacity: .7; pointer-events: none; }
.form-status { margin-top: 12px; padding: 12px 14px; border-radius: 8px; background: #e7f6ec; color: #1d7a3d; font-size: 14px; font-weight: 600; }

/* Phones: feature cards read as a compact list (icon left, text right)
   instead of tall centred tiles stacked one per screen. */
@media (max-width: 719px) {
  .fcard {
    display: grid;
    grid-template-columns: 44px 1fr;
    column-gap: 14px;
    align-items: start;
    padding: 16px;
    text-align: left;
  }
  .fcard > .fcard__icon,
  .fcard > .fcard__num { grid-row: span 2; }
  .fcard__icon svg { width: 30px; height: 30px; }
  .fcard__title { margin-top: 0; font-size: 17px; }
  .fcard__text { margin-top: 4px; }
}

/* form validation feedback, shown only after the user has interacted */
.field input:user-invalid,
.field textarea:user-invalid,
.field select:user-invalid { border-color: #d64545; background-color: #fff7f7; }
.field input:focus-visible,
.field textarea:focus-visible,
.field select:focus-visible { outline: 2px solid rgba(10, 124, 245, .35); outline-offset: 1px; }

/* Phones: shorter card images and 2-up small product tiles keep long
   sections scannable. */
@media (max-width: 719px) {
  .mcard__media { aspect-ratio: 2 / 1; }
  .grid--6:has(> .dcard) { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
}
@media (max-width: 719px) {
  .grid--tight:has(> .app) { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .grid--tight:has(> .app) .app__media,
  .grid--tight:has(> .app) img { aspect-ratio: 4 / 3; }
}
@media (max-width: 719px) {
  .grid--4:has(> .tile) { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .tile__cap span { display: none; }
}
@media (max-width: 1023px) {
  /* filter categories side by side so results aren't pushed far down */
  #prj-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 12px; }
  #prj-filters > :not(.check) { grid-column: 1 / -1; }
}
@media (max-width: 1023px) {
  /* stacked layout: filters -> results -> promo */
  .with-aside > aside { display: contents; }
  .with-aside > aside > #prj-filters { order: 1; }
  .with-aside > div { order: 2; }
  .with-aside > aside > .promo { order: 3; margin-top: 0; }
}

/* project filter: pending changes + reset */
.prj-reset {
  padding: 0;
  font: inherit;
  font-weight: 600;
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.prj-reset:hover { color: var(--blue-500); }
#prj-filters .btn.is-dirty { box-shadow: 0 0 0 3px rgba(10, 124, 245, .25), 0 10px 22px rgba(10, 124, 245, .35); }
#prj-filters .btn.is-dirty::after {
  content: "";
  width: 8px; height: 8px;
  margin-left: 2px;
  border-radius: 50%;
  background: #7fe3ff;
}

/* Touch screens have no real hover: a tap leaves :hover "stuck", so cards
   would stay lifted/zoomed. Neutralise hover lifts there and give a brief
   press feedback instead. */
@media (hover: none) {
  .pcard:hover, .fcard:hover, .mcard:hover, .tile:hover, .pj:hover, .course:hover,
  .dcard:hover, .prj:hover, .team:hover, .news:hover, .app:hover, .svc:hover,
  .btn--primary:hover, .btn--solid:hover, .floating-chatbtn:hover, .chatbox__send:hover,
  .footer__social a:hover, .social-row a:hover { transform: none; }

  .pcard:hover .pcard__media img, .pj:hover .pj__media img, .prj:hover .prj__media img,
  .partners__item:hover img, .map:hover img { transform: none; }

  .pcard:hover .pcard__badge { background: #fff; color: var(--blue-600); }
  .team:hover::before { opacity: 0; }

  .pcard:active, .mcard:active, .tile:active, .pj:active, .prj:active, .news:active,
  .app:active, .svc:active, .dcard:active { transform: scale(.985); transition-duration: .08s; }
  .btn:active { transform: scale(.97); }
}

/* mobile menu backdrop: dims the page behind the open menu; tapping it closes
   the menu via the document click handler */
@media (max-width: 1023px) {
  body.nav-locked::after {
    content: "";
    position: fixed;
    inset: 56px 0 0;
    z-index: 55;
    background: rgba(0, 10, 30, .55);
    animation: navFade .2s ease;
  }
}
@keyframes navFade { from { opacity: 0; } to { opacity: 1; } }
@media (max-width: 1023px) {
  body.nav-locked .floating-chatbtn,
  body.nav-locked .chatbox { visibility: hidden; }
}

/* Touch ergonomics on small screens:
   - form controls at 16px so iOS Safari doesn't zoom the page on focus
   - buttons and inline links get a ~44px tap area */
@media (max-width: 1023px) {
  input:not([type="checkbox"]):not([type="radio"]), select, textarea { font-size: 16px !important; }

  .btn, .btn--sm, .btn--xs { min-height: 44px; }
  .check { padding-block: 9px; }
  .footer__label { display: block; }
  .footer__phone, .footer__mail { display: inline-block; padding-block: 8px; margin-block: -8px; }
  .footer__links a { display: inline-flex; align-items: center; min-height: 40px; }
}

/* quick-reply suggestions in the chat panel (the hero agent panel that
   carries them on desktop is hidden on phones) */
.chatbox__chips { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.chatbox__chip {
  max-width: 90%;
  padding: 9px 14px;
  border: 1px solid rgba(127, 214, 255, .45);
  border-radius: 999px;
  background: rgba(10, 124, 245, .12);
  color: #dff3ff;
  font-size: 14px;
  line-height: 1.3;
  text-align: left;
  transition: background-color .15s ease;
}
.chatbox__chip:hover, .chatbox__chip:active { background: rgba(10, 124, 245, .3); }

/* ==========================================================================
   AIoT Platform / Sản phẩm: layout fixes
   ========================================================================== */

/* Side-by-side boxes: the stacked-box spacing must not push the 2nd one down,
   and both panels share one height. */
.grid > .boxed + .boxed { margin-top: 0; }
.grid--iot-features { align-items: stretch; }
@media (max-width: 1023px) { .grid--iot-features { grid-template-columns: 1fr; } }

/* application tiles: 2 per row in the narrow panel so captions fit; each tile
   is a column so captions fill equal-height cells and stay aligned */
.grid--iot-features .grid--tight { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.app { display: flex; flex-direction: column; }
.app__media { aspect-ratio: 16 / 9; }
.app__cap { flex: 1; font-size: 15px; line-height: 1.3; padding: 10px 12px; }
@media (min-width: 720px) and (max-width: 1023px) {
  .grid--iot-features .grid--tight { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* architecture diagram: equal-height columns with flow arrows between them */
.arch { align-items: stretch; gap: 44px; }
.arch__col { display: flex; flex-direction: column; }
.arch__col ul { flex: 1; }
.arch__core { display: flex; flex-direction: column; justify-content: center; }
.arch__core li:last-child { margin-bottom: 0; }
.arch__core::before,
.arch__core::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 30px; height: 30px;
  margin-top: -15px;
  border-radius: 50%;
  background: #e8f2ff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230a5fd0' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h13m-5-5 5 5-5 5'/%3E%3C/svg%3E") center / 16px no-repeat;
  border: 1px solid #cfe2f7;
}
.arch__core::before { left: -37px; }
.arch__core::after { right: -37px; }
@media (max-width: 1023px) {
  .arch { gap: 40px; }
  .arch__core::before,
  .arch__core::after { left: 50%; right: auto; margin: 0 0 0 -15px; transform: rotate(90deg); }
  .arch__core::before { top: -35px; }
  .arch__core::after { top: auto; bottom: -35px; }
}

/* sub-heading without an icon: its description shouldn't carry the icon indent */

/* value band: 5 items, keep lines even */
.value-band__list li { font-size: 16px; }
@media (max-width: 1023px) and (min-width: 720px) {
  .value-band__list li:last-child:nth-child(odd) { grid-column: 1 / -1; }
}

/* logo strip: logos are trimmed to their artwork, so cap the height and give
   them breathing room inside the tile */
.logo-strip li { height: 72px; padding: 0 16px; transition: border-color .2s ease, box-shadow .2s ease; }
.logo-strip img { max-height: 32px; max-width: min(120px, 100%); }
@media (hover: hover) { .logo-strip li:hover { border-color: #cfe2f7; box-shadow: 0 8px 18px rgba(0, 46, 120, .08); } }
@media (max-width: 719px) {
  .logo-strip { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .logo-strip li:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .logo-strip li { height: 60px; }
  .logo-strip img { max-height: 28px; }
}

/* software cards: image on top, text below, so titles line up whatever the
   caption length; horizontal compact row on phones */
.scard { flex-direction: column; align-items: stretch; gap: 0; padding: 0; overflow: hidden; transition: transform .2s ease, box-shadow .2s ease; }
.scard__media { width: 100%; }
.scard__media img { aspect-ratio: 16 / 9; border-radius: 0; }
.scard > div:last-child { padding: 14px 16px 16px; }
.scard b { font-size: 17px; }
.scard__meta { align-items: flex-start; }
.scard__meta svg { margin-top: 3px; }
@media (hover: hover) { .scard:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(0, 46, 120, .12); } }
@media (max-width: 719px) {
  .scard { flex-direction: row; align-items: center; padding: 12px; gap: 14px; }
  .scard__media { width: 104px; flex: none; }
  .scard__media img { aspect-ratio: 4 / 3; border-radius: 8px; }
  .scard > div:last-child { padding: 0; }
}
.grid--iot-features .grid--tight > * { grid-column: auto; }
.grid--iot-features .grid--tight { grid-auto-rows: 1fr; }
.grid--iot-features .app__media { aspect-ratio: 2 / 1; }
.grid--iot-features .app__cap { font-size: 14.5px; }
/* inside the two equal-height panels, let the card grid fill the panel */
.grid--iot-features > .boxed { display: flex; flex-direction: column; }
.grid--iot-features > .boxed > .grid { flex: 1; align-content: stretch; }
@media (min-width: 720px) and (max-width: 1023px) { .scard__media img { aspect-ratio: 2 / 1; } }
@media (min-width: 480px) and (max-width: 1023px) {
  .arch__col ul,
  .arch__core ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 14px; }
  .arch__core li { margin-bottom: 0; }
  .arch__core ul { row-gap: 8px; }
}
@media (max-width: 1023px) {
  .arch__col li, .arch__core li { font-size: 16px; }
  .arch__link { margin-top: 8px; }
}

/* footer on tablet/phone: tap-sized links without the desktop 10px gap on top,
   links in two columns, no desktop column dividers */
@media (max-width: 1023px) {
  .footer__links { display: grid; grid-template-columns: repeat(2, max-content); column-gap: 32px; row-gap: 0; }
  .footer__col + .footer__col::before { display: none; }
}

/* logo strips: one row per group from tablet up */
@media (min-width: 720px) {
  .logo-strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); }
}
@media (min-width: 720px) and (max-width: 1023px) {
  .logo-strip li { height: 64px; padding: 0 10px; }
  .logo-strip img { max-height: 28px; }
}
@media (min-width: 720px) and (max-width: 1023px) {
  .footer__col--cta { grid-column: auto; }
}

/* boxed section heads on phones: icon + title on one row, description full
   width underneath (the desktop 45px indent overflowed the box) */
@media (max-width: 719px) {
  .boxed__head:not(.boxed__head--row) {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    align-items: center;
    column-gap: 11px;
    row-gap: 8px;
  }
  .boxed__head h2 { font-size: 19px; line-height: 1.25; }
  .boxed__head p { grid-column: 1 / -1; margin: 0; font-size: 15px; }
  .boxed__head--row > span h2 { font-size: 19px; }
}
@media (max-width: 719px) {
  .app__cap { gap: 6px; padding: 8px 10px; font-size: 13.5px; }
  .app__cap i { width: 20px; height: 20px; }
}

/* image credits page */
.footer__bottom-inner { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.footer__credits { color: #90aed4; text-decoration: underline; text-underline-offset: 3px; }
.footer__credits:hover { color: var(--cyan-300); }
.credits__wrap { overflow-x: auto; border: 1px solid #e3ecf7; border-radius: 10px; }
.credits__table { width: 100%; border-collapse: collapse; font-size: 14px; color: #40608f; }
.credits__table th { padding: 12px 14px; text-align: left; font-weight: 600; color: var(--ink-title); background: #f4f8fd; }
.credits__table td { padding: 10px 14px; border-top: 1px solid #edf3fa; vertical-align: middle; }
.credits__table td:first-child { width: 96px; }
.credits__table img { width: 80px; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; }
.credits__table a { color: var(--blue-600); word-break: break-word; }
.credits__table td span { display: block; margin-top: 2px; font-size: 13px; color: #6d86ab; }
.credits__note { margin-top: 14px; font-size: 14px; color: #6d86ab; }
@media (max-width: 719px) { .credits__table { min-width: 560px; } }

/* ==========================================================================
   News: one card system (cover 16:9 + tag on image + meta + title + excerpt)
   ========================================================================== */
.news { position: relative; }
.news__media { position: relative; display: block; aspect-ratio: 16 / 9; }
.news__media img { transition: transform .45s ease; }
.news__tag {
  position: absolute;
  left: 12px; top: 12px;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(2, 26, 66, .82);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 18px;
}
.news__body { padding: 16px 18px 18px; }
.news__meta { gap: 16px; font-size: 13.5px; }
.news__meta > span { display: inline-flex; align-items: center; gap: 6px; }
.news__title { margin-top: 10px; font-size: 18px; line-height: 1.35; }
.news__title a { color: inherit; }
.news__title a::after { content: ""; position: absolute; inset: 0; }
.news__text {
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-600);
}
.news__more svg { width: 15px; height: 15px; transition: transform .2s ease; }
@media (hover: hover) {
  .news:hover .news__media img { transform: scale(1.05); }
  .news:hover .news__title a { color: var(--blue-600); }
  .news:hover .news__more svg { transform: translateX(3px); }
}

.news-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.news--feat { grid-column: 1 / -1; display: grid; grid-template-columns: 1.25fr 1fr; }
.news--feat .news__media { aspect-ratio: auto; min-height: 340px; }
.news--feat .news__body { justify-content: center; padding: 28px 32px; }
.news--feat .news__title { font-size: 26px; }
.news--feat .news__text { -webkit-line-clamp: 4; font-size: 16px; line-height: 25px; }
.news--feat .news__more { margin-top: 18px; padding-top: 0; }

.news-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.news-filter button {
  height: 38px;
  padding: 0 16px;
  border: 1px solid #d5e5f8;
  border-radius: 999px;
  background: #fff;
  color: #40608f;
  font-size: 14px;
  font-weight: 500;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.news-filter button:hover { border-color: var(--blue-500); color: var(--blue-600); }
.news-filter button.is-active { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }

@media (max-width: 1023px) {
  .news-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .news--feat { grid-template-columns: 1fr; }
  .news--feat .news__media { aspect-ratio: 16 / 9; min-height: 0; }
  .news--feat .news__body { padding: 18px 20px 20px; }
  .news--feat .news__title { font-size: 22px; }
}
@media (max-width: 719px) {
  .news-list { grid-template-columns: 1fr; gap: 16px; }
  .news-filter { flex-wrap: nowrap; overflow-x: auto; margin-inline: calc(var(--gutter) * -1); padding-inline: var(--gutter); scrollbar-width: none; }
  .news-filter button { flex: none; min-height: 40px; }
  .news--feat .news__title { font-size: 20px; }
}
.news--feat.news--flat { grid-column: auto; display: flex; }
.news--feat.news--flat .news__media { aspect-ratio: 16 / 9; min-height: 0; }
.news--feat.news--flat .news__body { padding: 16px 18px 18px; justify-content: flex-start; }
.news--feat.news--flat .news__title { font-size: 18px; }
.news--feat.news--flat .news__text { -webkit-line-clamp: 3; font-size: 14px; line-height: 21px; }
.news--feat.news--flat .news__more { margin-top: auto; padding-top: 14px; }
@media (min-width: 720px) and (max-width: 1023px) {
  .news-list > .news:first-child:not(.news--feat) ~ .news:last-child:nth-child(odd),
  .news-list > .news--feat ~ .news:last-child:nth-child(even) {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .news-list > .news:first-child:not(.news--feat) ~ .news:last-child:nth-child(odd) .news__media,
  .news-list > .news--feat ~ .news:last-child:nth-child(even) .news__media { aspect-ratio: auto; min-height: 100%; }
}

/* ==========================================================================
   Brand refresh — logo PA2 (red mark), light header, red accent
   ========================================================================== */
:root {
  --red-500: #e11d2a;
  --red-600: #c8101c;
  --red-700: #a50d16;
  --header-h: 64px;
}

/* brand lockup */
.brand__mark { width: 46px; height: auto; aspect-ratio: 400 / 346; object-fit: contain; }
.brand__name { color: #fff; font-weight: 800; letter-spacing: .005em; }
.brand__sub { color: #ff5a63; letter-spacing: .04em; }
.header__brand .brand__mark { width: 50px; height: auto; }
.header__brand .brand__name { color: #011351; font-size: 21px; }
.header__brand .brand__sub { color: var(--red-600); font-size: 15px; }
.header__brand .brand__text { top: 1px; }
.slogan__inner .brand__mark,
.site-footer .brand__mark { width: 52px; height: auto; }

/* light header */
.site-header {
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid #e3ecf7;
  box-shadow: 0 4px 18px rgba(1, 27, 88, .06);
  -webkit-backdrop-filter: saturate(1.4) blur(8px);
  backdrop-filter: saturate(1.4) blur(8px);
}
.header__inner { height: var(--header-h); }
.nav-link { color: var(--ink-title); padding-block: 23px 22px; }
.nav-link::after { bottom: 10px; background: var(--red-600); }
@media (hover: hover) { .nav-link:hover { color: var(--blue-600); } }
.nav-link.is-active { color: var(--blue-700); }
.header__phone {
  border: 0;
  background: var(--red-600);
  color: #fff;
  box-shadow: 0 6px 16px rgba(200, 16, 28, .28);
}
.header__phone:hover { background: var(--red-700); border-color: transparent; }
.nav-toggle { color: var(--ink-title); }

@media (max-width: 1023px) {
  .main-nav {
    top: var(--header-h);
    max-height: calc(100dvh - var(--header-h));
    background: #fff;
    border-top: 1px solid #e3ecf7;
    box-shadow: 0 18px 30px rgba(1, 27, 88, .16);
  }
  .nav-link { padding-block: 13px; }
  .main-nav > .nav-link,
  .main-nav > .nav-group { border-bottom: 1px solid #eef3fa; }
  .nav-group.is-open > .nav-link { color: var(--blue-600); background: #f3f8fe; }
  .nav-link:active { background: #eef5fd; }
  .nav-link.is-active { box-shadow: inset 3px 0 0 var(--red-600); }
  .nav-group__menu { background: #f8fbfe; }
  .nav-group__menu a { color: var(--ink-body); }
  .nav-group__menu a:active,
  .nav-group__menu a.is-current { background: #eaf3fd; color: var(--blue-600); }
  .nav-toggle:active { background: #eef5fd; }
  body.nav-locked::after { inset: var(--header-h) 0 0; }
}
@media (max-width: 719px) {
  :root { --header-h: 60px; }
  .header__brand .brand__mark { width: 42px; }
  .header__brand .brand__name { font-size: 18px; }
  .header__brand .brand__sub { font-size: 13px; }
}
@media (max-width: 379px) {
  .header__brand .brand__name { font-size: 16px; }
  .header__brand { gap: 10px; }
}

/* red accent CTA — conversion actions only */
.btn--accent,
.btn--primary.btn--accent {
  background: linear-gradient(97deg, var(--red-500) 0%, var(--red-600) 100%);
  color: #fff;
  box-shadow: 0 8px 22px rgba(200, 16, 28, .32);
}
.btn--accent:hover { box-shadow: 0 12px 28px rgba(200, 16, 28, .42); }

/* red eyebrow accents on banners */
.hero__eyebrow span:last-child strong,
.phero__eyebrow strong { color: #fff; }
.hero__eyebrow::before,
.phero__eyebrow::before {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-bottom: 10px;
  border-radius: 2px;
  background: var(--red-500);
}

/* ==========================================================================
   Solution blocks (9-block solution pages) & shared content components
   ========================================================================== */
.phero[style*="--hero"] { background-image: var(--hero); }
.phero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.phero__actions .btn { height: 46px; font-size: 15px; gap: 10px; }
.phero__crumbs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; font-size: 13px; color: #a9c8ec; }
.phero__crumbs a { color: #d6e7fb; }
.phero__crumbs a:hover { color: #fff; text-decoration: underline; }
.phero__crumbs span[aria-hidden] { opacity: .6; }

/* sticky in-page nav */
.solnav {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid #e3ecf7;
  box-shadow: 0 6px 14px rgba(1, 27, 88, .05);
}
.solnav__list {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.solnav__list::-webkit-scrollbar { display: none; }
.solnav__list a {
  flex: none;
  padding: 14px 12px 12px;
  border-bottom: 2px solid transparent;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-muted);
  white-space: nowrap;
  transition: color .15s ease, border-color .15s ease;
}
.solnav__list a:hover { color: var(--blue-600); }
.solnav__list a.is-current { color: var(--ink-title); border-bottom-color: var(--red-600); }
.solnav__list a.solnav__cta { margin-left: auto; color: var(--red-600); }
[id].psec, section[id] { scroll-margin-top: calc(var(--header-h) + 52px); }

/* eyebrow above section titles */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--red-600);
}
.kicker::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: currentColor; }

/* audience cards */
.aud {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  height: 100%;
  padding: 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
}
.aud__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 10px;
  background: #eaf3fd;
  color: var(--blue-600);
}
.aud__icon svg { width: 24px; height: 24px; }
.aud__title { font-size: 17px; font-weight: 700; color: var(--ink-title); line-height: 1.25; }
.aud__text { margin-top: 4px; font-size: 14.5px; line-height: 1.5; color: var(--ink-muted); }

/* problem → answer cards */
.pain {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
  overflow: hidden;
}
.pain__q { flex: 1; padding: 18px 18px 14px; }
.pain__q h3 { display: flex; gap: 10px; align-items: flex-start; font-size: 17px; font-weight: 700; line-height: 1.3; color: var(--ink-title); }
.pain__q h3 svg { flex: none; width: 22px; height: 22px; margin-top: 1px; color: var(--red-600); }
.pain__q p { margin-top: 8px; font-size: 14.5px; line-height: 1.55; color: var(--ink-muted); }
.pain__a {
  display: flex;
  gap: 10px;
  padding: 12px 18px;
  background: #f1f7fe;
  border-top: 1px solid #e3ecf7;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-body);
}
.pain__a svg { flex: none; width: 20px; height: 20px; margin-top: 1px; color: #0f9d58; }
.pain__a strong { color: var(--ink-title); }

/* architecture: 4 layers */
.arch4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; counter-reset: layer; }
.arch4__layer {
  position: relative;
  padding: 18px;
  background: #fff;
  border: 1px solid #d6e5f7;
  border-top: 4px solid var(--blue-500);
  border-radius: var(--radius-card);
}
.arch4__layer:nth-child(2) { border-top-color: #0aa5d8; }
.arch4__layer:nth-child(3) { border-top-color: var(--blue-700); }
.arch4__layer:nth-child(4) { border-top-color: var(--red-600); }
.arch4__layer + .arch4__layer::before {
  content: "";
  position: absolute;
  left: -22px; top: 50%;
  width: 16px; height: 16px;
  margin-top: -8px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2390aed4' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12h15m-6-6 6 6-6 6'/%3E%3C/svg%3E") center / contain no-repeat;
}
.arch4__step { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-muted); }
.arch4__step::before { counter-increment: layer; content: "Lớp " counter(layer) " · "; }
.arch4__title { margin-top: 4px; font-size: 17px; font-weight: 700; color: var(--ink-title); line-height: 1.25; }
.arch4__list { margin-top: 10px; display: grid; gap: 6px; }
.arch4__list li { position: relative; padding-left: 16px; font-size: 14.5px; line-height: 1.45; color: var(--ink-body); }
.arch4__list li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-400); }
.arch-note { margin-top: 14px; font-size: 14px; color: var(--ink-muted); }

/* data table (equipment, comparison) */
.dtable-wrap { overflow-x: auto; border: 1px solid #d6e5f7; border-radius: var(--radius-card); background: #fff; -webkit-overflow-scrolling: touch; }
.dtable { width: 100%; min-width: 680px; border-collapse: collapse; font-size: 14.5px; line-height: 1.5; }
.dtable th, .dtable td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid #e8eff8; }
.dtable thead th { background: #eef5fd; font-size: 13.5px; font-weight: 700; letter-spacing: .02em; color: var(--ink-title); white-space: nowrap; }
.dtable tbody tr:last-child td { border-bottom: 0; }
.dtable tbody tr:hover td { background: #fafcff; }
.dtable td:first-child { font-weight: 600; color: var(--ink-title); }
.dtable td { color: var(--ink-body); }
.dtable .tag-list { display: flex; flex-wrap: wrap; gap: 4px; }
.dtable .tag-list span, .chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef3fa;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-body);
  white-space: nowrap;
}
.dtable .yes { color: #0f8a4c; font-weight: 600; }
.dtable .no { color: var(--ink-muted); }

/* separation between commercial statements and vendor specs */
.claim-note {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 16px;
  border-left: 3px solid #f0a31a;
  border-radius: 0 8px 8px 0;
  background: #fff8ea;
  font-size: 14px;
  line-height: 1.55;
  color: #6a4b12;
}
.claim-note svg { flex: none; width: 20px; height: 20px; margin-top: 1px; color: #d48806; }

/* deployment conditions checklist */
.checks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 28px; }
.checks li {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
}
.checks li > svg { flex: none; width: 22px; height: 22px; color: var(--blue-600); }
.checks strong { display: block; font-size: 16px; color: var(--ink-title); }
.checks span { display: block; margin-top: 3px; font-size: 14.5px; line-height: 1.5; color: var(--ink-muted); }

/* process: numbered steps */
.proc { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; counter-reset: proc; }
.proc li { position: relative; padding: 18px 16px; background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.proc li::before {
  counter-increment: proc;
  content: counter(proc, decimal-leading-zero);
  display: block;
  margin-bottom: 8px;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue-500);
}
.proc li:last-child::before { color: var(--red-600); }
.proc strong { display: block; font-size: 16px; line-height: 1.3; color: var(--ink-title); }
.proc span { display: block; margin-top: 6px; font-size: 14px; line-height: 1.5; color: var(--ink-muted); }

/* FAQ accordion */
.faq { display: grid; gap: 10px; }
.faq details { background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.faq details[open] { border-color: #bcd6f3; box-shadow: 0 8px 20px rgba(1, 27, 88, .06); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-title);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #eef5fd url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230057c2' stroke-width='2.6' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 12px no-repeat;
  transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); background-color: #fdecee; filter: hue-rotate(150deg); }
.faq summary:hover { color: var(--blue-600); }
.faq__a { padding: 0 18px 16px; font-size: 15px; line-height: 1.65; color: var(--ink-body); }
.faq__a p + p { margin-top: 8px; }
.faq__a a { color: var(--blue-600); text-decoration: underline; }
.faq-group + .faq-group { margin-top: 28px; }
.faq-group__title { margin-bottom: 12px; font-size: 20px; font-weight: 700; color: var(--ink-title); }

/* survey / lead block */
.survey {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 32px;
  padding: 32px;
  border-radius: 14px;
  background: linear-gradient(135deg, #011b58 0%, #0a3a8c 100%);
  color: #fff;
}
.survey__title { font-size: 28px; font-weight: 700; line-height: 1.2; }
.survey__lead { margin-top: 10px; font-size: 16px; line-height: 1.6; color: #cfe0f7; }
.survey__points { margin-top: 18px; display: grid; gap: 10px; }
.survey__points li { display: flex; gap: 10px; font-size: 15px; line-height: 1.5; color: #e6f0fc; }
.survey__points svg { flex: none; width: 20px; height: 20px; color: #4ae6ff; }
.survey__contact { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px 20px; font-size: 15px; }
.survey__contact a { display: inline-flex; align-items: center; gap: 8px; color: #fff; font-weight: 600; }
.survey__contact svg { width: 18px; height: 18px; }
.survey__form { padding: 22px; background: #fff; border-radius: 12px; color: var(--ink-body); }

/* lead form (shared by survey, contact, training) */
.lead-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.lead-form .field { margin: 0; }
.lead-form .field--full, .lead-form .consent, .lead-form .lead-form__actions, .lead-form .form-status { grid-column: 1 / -1; }
.lead-form label.field__label { display: block; margin-bottom: 5px; font-size: 14px; font-weight: 600; color: var(--ink-title); }
.lead-form label.field__label span { color: var(--red-600); }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid #cfdcee;
  border-radius: 8px;
  background: #fff;
  font: inherit;
  font-size: 16px;
  color: var(--ink-title);
}
.lead-form select {
  appearance: none;
  padding-right: 34px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234a6491' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") right 12px center / 14px no-repeat;
}
.lead-form textarea { min-height: 96px; resize: vertical; }
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(11, 124, 255, .14); }
.lead-form input:user-invalid, .lead-form select:user-invalid, .lead-form textarea:user-invalid { border-color: #d64545; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; line-height: 1.5; color: var(--ink-muted); }
.consent input { flex: none; width: 18px; min-height: 0; height: 18px; margin-top: 2px; accent-color: var(--blue-600); }
.consent a { color: var(--blue-600); text-decoration: underline; }
.lead-form__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.lead-form__actions .btn { height: 48px; margin: 0; }
.lead-form__hint { font-size: 13px; color: var(--ink-muted); }

/* success state with request code */
.lead-done {
  padding: 26px 22px;
  text-align: center;
  border: 1px solid #c7ecd6;
  border-radius: 12px;
  background: #f2fbf6;
  color: var(--ink-body);
}
.lead-done[hidden] { display: none !important; }
.lead-done__icon { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; background: #1aa35b; color: #fff; }
.lead-done__icon svg { width: 28px; height: 28px; }
.lead-done h3 { margin-top: 12px; font-size: 21px; font-weight: 700; color: var(--ink-title); }
.lead-done p { margin-top: 6px; font-size: 15px; line-height: 1.55; }
.lead-done__code {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 8px 14px;
  border: 1px dashed #1aa35b;
  border-radius: 8px;
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #0c6b3a;
}
.lead-done__again { margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--blue-600); text-decoration: underline; background: none; border: 0; cursor: pointer; }

/* related links strip */
.related { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.related a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.related a:hover { border-color: #b8d3f3; box-shadow: 0 10px 22px rgba(1, 27, 88, .08); transform: translateY(-2px); }
.related i { flex: none; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px; background: #eaf3fd; color: var(--blue-600); }
.related i svg { width: 22px; height: 22px; }
.related strong { display: block; font-size: 16px; color: var(--ink-title); }
.related span { display: block; margin-top: 2px; font-size: 13.5px; color: var(--ink-muted); }

/* solution directory cards (giai-phap overview) */
.soldir { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.soldir a {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.soldir a:hover { border-color: #b8d3f3; box-shadow: 0 14px 28px rgba(1, 27, 88, .1); transform: translateY(-3px); }
.soldir i { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, #0b7cff, #0043fe); color: #fff; }
.soldir i svg { width: 26px; height: 26px; }
.soldir strong { margin-top: 14px; font-size: 18px; color: var(--ink-title); }
.soldir span { margin-top: 6px; flex: 1; font-size: 14.5px; line-height: 1.55; color: var(--ink-muted); }
.soldir em { margin-top: 14px; font-style: normal; font-size: 14.5px; font-weight: 600; color: var(--blue-600); }
.soldir a:hover em { color: var(--red-600); }

/* long-form document (policy, article) */
.doc { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; align-items: start; }
.doc__toc { position: sticky; top: calc(var(--header-h) + 20px); padding: 18px; background: #f6fafe; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.doc__toc p { margin-bottom: 10px; font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-muted); }
.doc__toc ol { display: grid; gap: 6px; list-style: none; }
.doc__toc a { display: block; font-size: 14.5px; line-height: 1.4; color: var(--ink-body); }
.doc__toc a:hover { color: var(--blue-600); }
.prose { max-width: 780px; font-size: 16.5px; line-height: 1.75; color: var(--ink-body); }
.prose > * + * { margin-top: 14px; }
.prose h2 { margin-top: 34px; font-size: 24px; line-height: 1.3; color: var(--ink-title); scroll-margin-top: calc(var(--header-h) + 20px); }
.prose h3 { margin-top: 24px; font-size: 19px; line-height: 1.35; color: var(--ink-title); }
.prose h2:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 22px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 6px; }
.prose a { color: var(--blue-600); text-decoration: underline; }
.prose strong { color: var(--ink-title); }
.prose figure img { width: 100%; border-radius: var(--radius-card); }
.prose figcaption { margin-top: 8px; font-size: 14px; color: var(--ink-muted); text-align: center; }
.prose blockquote { padding: 14px 18px; border-left: 4px solid var(--red-600); background: #f6fafe; border-radius: 0 8px 8px 0; font-style: italic; }
.prose .dtable-wrap { margin-top: 16px; }
.doc__meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 20px; font-size: 14px; color: var(--ink-muted); }
.doc__meta span { display: inline-flex; align-items: center; gap: 6px; }
.doc__meta svg { width: 16px; height: 16px; }
.doc__updated { margin-bottom: 18px; font-size: 14px; color: var(--ink-muted); }

/* fact list (case study / legal entity) */
.facts { display: grid; gap: 0; background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); overflow: hidden; }
.facts div { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 12px; padding: 12px 16px; border-bottom: 1px solid #eef3fa; font-size: 15px; line-height: 1.5; }
.facts div:last-child { border-bottom: 0; }
.facts dt { font-weight: 600; color: var(--ink-muted); }
.facts dd { color: var(--ink-title); }
.facts .pending { color: #b07a10; font-style: italic; }

/* downloads & certificates */
.dl {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
}
.dl__icon { flex: none; display: grid; place-items: center; width: 52px; height: 60px; border-radius: 8px; background: #fdecee; color: var(--red-600); font-size: 12px; font-weight: 800; letter-spacing: .04em; }
.dl__body { flex: 1; min-width: 0; }
.dl__title { font-size: 16px; font-weight: 700; color: var(--ink-title); line-height: 1.3; }
.dl__meta { margin-top: 3px; font-size: 13.5px; color: var(--ink-muted); }
.dl .btn { flex: none; height: 40px; margin: 0; padding: 0 16px; font-size: 14px; gap: 8px; }
.dl-note { margin-top: 8px; font-size: 13.5px; color: #b07a10; }
.dl-note[hidden] { display: none !important; }
.cert {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 170px;
  padding: 16px;
  text-align: center;
  background: repeating-linear-gradient(135deg, #f8fbfe 0 10px, #f1f6fc 10px 20px);
  border: 1.5px dashed #c5d7ee;
  border-radius: var(--radius-card);
  color: var(--ink-muted);
}
.cert svg { width: 34px; height: 34px; color: #8aa7cf; }
.cert strong { font-size: 15px; color: var(--ink-title); }
.cert span { font-size: 13px; }

/* method steps (about) */
.method { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.method li { padding: 20px; background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.method b { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--red-600); color: #fff; font-size: 15px; }
.method strong { display: block; margin-top: 12px; font-size: 17px; color: var(--ink-title); }
.method span { display: block; margin-top: 6px; font-size: 14.5px; line-height: 1.55; color: var(--ink-muted); }

/* product catalog */
.catbar { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: flex-end; margin-bottom: 18px; padding: 16px; background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.catbar label { display: grid; gap: 5px; flex: 1 1 180px; font-size: 13.5px; font-weight: 600; color: var(--ink-title); }
.catbar select { min-height: 42px; padding: 8px 34px 8px 12px; border: 1px solid #cfdcee; border-radius: 8px; font: inherit; font-size: 15px; color: var(--ink-title); appearance: none; background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234a6491' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") right 12px center / 14px no-repeat; }
.catbar__count { flex: 1 1 100%; font-size: 14px; color: var(--ink-muted); }
.catbar__reset { min-height: 42px; padding: 0 14px; border: 1px solid #cfdcee; border-radius: 8px; background: #fff; font: inherit; font-size: 14px; font-weight: 600; color: var(--ink-body); cursor: pointer; }
.catbar__reset:hover { border-color: var(--blue-500); color: var(--blue-600); }
.cats { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 14px; scrollbar-width: none; }
.cats::-webkit-scrollbar { display: none; }
.cats button { flex: none; min-height: 38px; padding: 0 14px; border: 1px solid #d6e5f7; border-radius: 999px; background: #fff; font: inherit; font-size: 14px; font-weight: 600; color: var(--ink-body); cursor: pointer; }
.cats button:hover { border-color: var(--blue-500); color: var(--blue-600); }
.cats button.is-active { background: var(--ink-title); border-color: var(--ink-title); color: #fff; }
.pitem {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 18px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: var(--radius-card);
  transition: box-shadow .15s ease, border-color .15s ease;
}
.pitem[hidden] { display: none !important; }
.pitem:hover { border-color: #b8d3f3; box-shadow: 0 12px 24px rgba(1, 27, 88, .08); }
.pitem__media { margin: -18px -18px 14px; aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; background: #f3f7fd; border-radius: var(--radius-card) var(--radius-card) 0 0; overflow: hidden; }
.pitem__media img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.pitem__cat { font-size: 12.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--blue-600); }
.pitem__title { margin-top: 6px; font-size: 17px; font-weight: 700; line-height: 1.3; color: var(--ink-title); }
.pitem__text { margin-top: 6px; font-size: 14.5px; line-height: 1.55; color: var(--ink-muted); }
.pitem__model { margin-top: 8px; font-size: 13.5px; color: var(--ink-muted); }
.pitem__model strong { color: var(--ink-title); }
.pitem__price { margin-top: 4px; font-size: 16px; font-weight: 700; color: var(--blue-600); }
.pitem__price--contact { color: var(--ink-muted); font-weight: 600; }
.pitem__row { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 4px; }
.pitem__row .chip--app { background: #eaf7f0; color: #0f6b3d; }
.pitem__foot { margin-top: auto; padding-top: 14px; }
.pitem__foot .btn { margin: 0; }
.cat-empty { padding: 28px; text-align: center; color: var(--ink-muted); background: #fff; border: 1px dashed #cfdcee; border-radius: var(--radius-card); }
.cat-empty[hidden] { display: none !important; }

/* brand page hero logo */
.brandhead { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 28px; align-items: center; }
.brandhead__logo { display: grid; place-items: center; height: 140px; padding: 20px; background: #fff; border: 1px solid #e3ecf7; border-radius: var(--radius-card); }
.brandhead__logo img { max-height: 70px; width: auto; }
.brand-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.brand-tabs a { padding: 6px 14px; border: 1px solid #d6e5f7; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--ink-body); background: #fff; }
.brand-tabs a:hover { border-color: var(--blue-500); color: var(--blue-600); }
.brand-tabs a.is-current { background: var(--ink-title); border-color: var(--ink-title); color: #fff; }

/* AI agents */
.agent {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 22px;
  background: #fff;
  border: 1px solid #e3ecf7;
  border-radius: 12px;
}
.agent__icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, #0b7cff, #0043fe); color: #fff; }
.agent:nth-child(3) .agent__icon { background: linear-gradient(135deg, var(--red-500), var(--red-700)); }
.agent__icon svg { width: 28px; height: 28px; }
.agent__title { margin-top: 14px; font-size: 20px; font-weight: 700; color: var(--ink-title); }
.agent__for { margin-top: 4px; font-size: 14px; font-weight: 600; color: var(--blue-600); }
.agent__text { margin-top: 8px; font-size: 15px; line-height: 1.6; color: var(--ink-muted); }
.agent .mcard__list { margin-top: 12px; }
.agent__foot { margin-top: auto; padding-top: 16px; }
.agent__foot .btn { margin: 0; }

/* training programs */
.course { display: flex; flex-direction: column; height: 100%; background: #fff; border: 1px solid #e3ecf7; border-radius: 12px; overflow: hidden; }
.course__media { aspect-ratio: 16 / 9; overflow: hidden; }
.course__media img { width: 100%; height: 100%; object-fit: cover; }
.course__body { display: flex; flex-direction: column; flex: 1; padding: 18px; }
.course__meta { display: flex; flex-wrap: wrap; gap: 6px; }
.course__title { margin-top: 10px; font-size: 18px; font-weight: 700; line-height: 1.3; color: var(--ink-title); }
.course__text { margin-top: 6px; font-size: 14.5px; line-height: 1.55; color: var(--ink-muted); }
.course .mcard__list { margin-top: 10px; }
.course__foot { margin-top: auto; padding-top: 14px; }
.course__foot .btn { margin: 0; }

/* home: featured projects */
.hprj { display: flex; flex-direction: column; height: 100%; background: #fff; border: 1px solid #e3ecf7; border-radius: 12px; overflow: hidden; transition: box-shadow .15s ease, transform .15s ease; }
.hprj:hover { box-shadow: 0 14px 28px rgba(1, 27, 88, .1); transform: translateY(-3px); }
.hprj__media { aspect-ratio: 16 / 9; overflow: hidden; }
.hprj__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.hprj:hover .hprj__media img { transform: scale(1.04); }
.hprj__body { display: flex; flex-direction: column; flex: 1; padding: 16px 18px 18px; }
.hprj__title { font-size: 18px; font-weight: 700; line-height: 1.3; color: var(--ink-title); }
.hprj__loc { margin-top: 4px; font-size: 14px; color: var(--ink-muted); }
.hprj__text { margin-top: 8px; font-size: 14.5px; line-height: 1.55; color: var(--ink-body); }
.hprj__foot { margin-top: auto; padding-top: 12px; }

/* mega menu for Giải pháp (desktop) */
@media (min-width: 1024px) {
  .nav-group__menu--cols { display: grid; grid-template-columns: repeat(2, minmax(210px, 1fr)); min-width: 460px; column-gap: 4px; padding: 8px; }
  .nav-group__menu--cols a { border-radius: 6px; }
  .nav-group__menu .nav-group__label { grid-column: 1 / -1; }
}
.nav-group__label { display: block; padding: 10px 18px 4px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-muted); }
@media (max-width: 1023px) { .nav-group__label { padding-left: 44px; } }
@media (min-width: 1024px) {
  .main-nav { gap: 20px; margin-left: 30px; }
  .header__phone { margin-left: auto; padding-left: 14px; }
}
@media (min-width: 1024px) and (max-width: 1279px) {
  .main-nav > .nav-link--home { display: none; }
  .main-nav { gap: 16px; margin-left: 22px; }
  .nav-link { font-size: 14.5px; }
  .header__brand .brand__name { font-size: 19px; }
  .header__brand .brand__mark { width: 44px; }
}

/* responsive */
@media (max-width: 1023px) {
  .arch4 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .arch4__layer + .arch4__layer::before { display: none; }
  .proc { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .survey { grid-template-columns: 1fr; padding: 24px; }
  .related, .soldir { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .doc { grid-template-columns: 1fr; gap: 20px; }
  .doc__toc { position: static; }
  .method { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brandhead { grid-template-columns: 1fr; }
}
@media (max-width: 719px) {
  .arch4, .checks, .related, .soldir, .method { grid-template-columns: 1fr; }
  .proc { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lead-form { grid-template-columns: 1fr; }
  .survey { padding: 20px 16px; gap: 20px; border-radius: 12px; }
  .survey__form { padding: 16px; }
  .survey__title { font-size: 23px; }
  .facts div { grid-template-columns: 1fr; gap: 2px; }
  .dl { flex-wrap: wrap; }
  .dl .btn { width: 100%; justify-content: center; }
  .lead-form__actions .btn { width: 100%; justify-content: center; }
  .solnav__list a { padding: 12px 10px 10px; font-size: 14px; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 21px; }
}
.proc, .checks, .method { list-style: none; padding: 0; }
.lead-form .field__label { position: static; top: auto; left: auto; transform: none; pointer-events: auto; background: none; padding: 0; }
.lead-form .field input, .lead-form .field select, .lead-form .field textarea { padding-left: 12px; }
.lead-done:focus { outline: none; }
.phero--article .phero__title { font-size: 36px; line-height: 1.2; text-transform: none; max-width: 860px; }
@media (max-width: 719px) { .phero--article .phero__title { font-size: 26px; } }
.doc--aside { grid-template-columns: minmax(0, 1fr) 320px; }
@media (max-width: 1023px) { .doc--aside { grid-template-columns: 1fr; } }
.prj__title a { color: inherit; } .prj__title a:hover { color: var(--blue-600); }
.ct-company { margin-bottom: 14px; padding: 12px 14px; border-radius: 8px; background: #f3f8fe; font-size: 14px; line-height: 1.5; color: var(--ink-muted); }
.ct-company strong { display: block; font-size: 15.5px; color: var(--ink-title); }
.panel .lead-form .btn--solid { width: auto; height: 48px; margin: 0; font-size: 16px; }
.footer__policy { display: inline-flex; flex-wrap: wrap; justify-content: center; gap: 6px 16px; }
.site-footer { background-color: #001338; background-blend-mode: normal; position: relative; }
.site-footer::before { content: ""; position: absolute; inset: 0; background: rgba(0, 12, 36, .55); pointer-events: none; }
.site-footer > * { position: relative; }
@media (max-width: 719px) {
  .phero__actions { flex-direction: column; }
  .phero__actions .btn { width: 100%; justify-content: center; }
}
@media (max-width: 719px) {
  .dtable-wrap:has(.dtable--stack) { overflow: visible; border: 0; background: none; }
  .dtable--stack { min-width: 0; }
  .dtable--stack thead { display: none; }
  .dtable--stack, .dtable--stack tbody, .dtable--stack tr, .dtable--stack td { display: block; width: 100%; }
  .dtable--stack tr { margin-bottom: 12px; padding: 4px 0; background: #fff; border: 1px solid #d6e5f7; border-radius: var(--radius-card); overflow: hidden; }
  .dtable--stack td { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 10px; padding: 9px 14px; border-bottom: 1px solid #eef3fa; }
  .dtable--stack tr:last-child td { border-bottom: 1px solid #eef3fa; }
  .dtable--stack td:last-child { border-bottom: 0 !important; }
  .dtable--stack td::before { content: attr(data-label); font-size: 12.5px; font-weight: 700; letter-spacing: .02em; color: var(--ink-muted); }
  .dtable--stack td:first-child { display: block; background: #eef5fd; font-size: 16px; }
  .dtable--stack td:first-child::before { display: none; }
  .dtable--stack tbody tr:hover td { background: inherit; }
  .dtable--stack tbody tr:hover td:first-child { background: #eef5fd; }
}
.facts dd { margin: 0; } .facts dd a { color: var(--blue-600); }
.course__meta { min-height: 52px; align-content: flex-start; }

/* mobile banner variants (960px) */
@media (max-width: 719px) {
  .hero { background-image: url("../images/hero-bg-m.webp"); }
  .whyus { background-image: linear-gradient(180deg, rgba(0, 18, 52, .86) 0%, rgba(0, 24, 66, .72) 55%, rgba(0, 30, 80, .6) 100%), url("../images/whyus-bg-m.webp"); }
  .solution__panel { background-image: url("../images/solution-panel-m.webp"); }
  .site-footer { background-image: url("../images/footer-bg-m.webp"); }
  .phero--bld { background-image: url("../images/sol-bld-hero-m.webp"); }
  .phero--news { background-image: url("../images/sol-bld-hero-m.webp"); }
  .phero--edu { background-image: url("../images/sol-edu-hero-m.webp"); }
  .phero--all { background-image: url("../images/sol-all-hero-m.webp"); }
  .phero--prd { background-image: url("../images/prd-hero-m.webp"); }
  .cta-band { background-image: url("../images/whyus-bg-m.webp"); }
  .split__panel { background-image: url("../images/edu-path-m.webp"); }
  .split__panel--about { background-image: url("../images/prj-2-m.webp"); }
  .phero--prj { background-image: url("../images/prj-hero-m.webp"); }
  .phero--ct { background-image: url("../images/ct-hero-m.webp"); }
  .stats-band { background-image: url("../images/whyus-bg-m.webp"); }
  .slogan { background-image: url("../images/whyus-bg-m.webp"); }
  .phero--iot { background-image: url("../images/iot-hero-m.webp"); }
  .phero--ai { background-image: url("../images/ai-hero-m.webp"); }
  .phero[style*="--hero"] { background-image: var(--hero-m, var(--hero)); }
}
/* /mobile banner variants */

/* ---------- Trang chi tiết tin tức: cột phải (bài liên quan + khối kêu gọi khảo sát) ---------- */
.doc__aside { position: sticky; top: calc(var(--header-h) + 20px); display: grid; gap: 18px; }
.doc__aside .doc__toc { position: static; }
.doc__related ol { gap: 4px; }
.doc__related li a { display: grid; grid-template-columns: 72px 1fr; gap: 12px; align-items: center; padding: 8px; border-radius: 10px; transition: background .2s; }
.doc__related li a:hover { background: #fff; }
.doc__related img { width: 72px; height: 50px; object-fit: cover; border-radius: 8px; }
.doc__related span { font-size: 14px; line-height: 1.4; font-weight: 600; color: var(--ink-title); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.doc__related li a:hover span { color: var(--blue-600); }
.doc-cta { position: relative; overflow: hidden; padding: 22px 20px 20px; border-radius: 16px; color: #fff; background: radial-gradient(circle at 100% 0, rgba(41,216,255,.35), transparent 55%), linear-gradient(150deg, var(--navy-900), var(--blue-700)); box-shadow: 0 16px 34px rgba(0,19,54,.25); }
.doc-cta__ico { display: grid; place-items: center; width: 46px; height: 46px; margin-bottom: 14px; border-radius: 12px; background: rgba(255,255,255,.12); color: var(--cyan-300); }
.doc-cta__ico svg { width: 26px; height: 26px; }
.doc-cta__kicker { margin: 0; font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--cyan-300); }
.doc-cta__title { margin: 6px 0 8px; font-size: 19px; line-height: 1.3; font-weight: 700; color: #fff; }
.doc-cta__text { margin: 0 0 16px; font-size: 14px; line-height: 1.55; color: rgba(255,255,255,.82); }
.doc-cta__btn { display: flex; align-items: center; justify-content: center; gap: 8px; height: 46px; border-radius: var(--radius-pill); background: var(--red-600, #e3262f); color: #fff; font-weight: 700; font-size: 15px; box-shadow: 0 10px 22px rgba(227,38,47,.35); transition: transform .2s, box-shadow .2s, background .2s; }
.doc-cta__btn svg { width: 18px; height: 18px; transition: transform .2s; }
.doc-cta__btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 28px rgba(227,38,47,.45); }
.doc-cta__btn:hover svg { transform: translateX(3px); }
.doc-cta__phone { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 12px; font-size: 14px; color: rgba(255,255,255,.85); }
.doc-cta__phone svg { width: 16px; height: 16px; color: var(--cyan-300); }
.doc-cta__phone b { color: #fff; }
.doc-cta__phone:hover b { color: var(--cyan-300); }
@media (max-width: 1023px) { .doc__aside { position: static; } }
.doc__related ol { padding-left: 0; margin: 0; list-style: none; }