/* ============================================================
   KHUNG WEBSITE KHACH HANG - DESIGN SYSTEM
   ------------------------------------------------------------
   Khi tao site cho khach hang moi, CHI can sua cac bien trong
   khoi :root ben duoi (mau, font, bo goc, khoang cach...).
   KHONG can sua phan layout/style ben duoi tru khi muon
   thay doi cau truc chung cho moi khach hang.
   ============================================================ */

:root {
  /* ---- 1. Brand - doi theo tung khach hang ---- */
  --color-primary: #152C70;      /* navy lay truc tiep tu logo MSA */
  --color-secondary: #EE9B12;    /* cam vang logo MSA */
  --color-bg: #F7F9FC;           /* nen tong the */
  --color-surface: #ffffff;      /* nen card/section noi */
  --color-text: #1f1f1f;         /* mau chu chinh */
  --color-text-muted: #6b6b6b;   /* mau chu phu */
  --color-border: #DDE4EE;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;

  --container-width: 1180px;
  --section-padding: clamp(56px, 8vw, 120px);

  --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.08);
  --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.18);

  --transition: 0.25s ease;
}

/* ---- 2. Reset co ban ---- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: var(--section-padding) 0; }
.section--alt { background: var(--color-surface); }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title { font-size: clamp(28px, 4vw, 42px); margin-bottom: 16px; }
.section-desc { color: var(--color-text-muted); max-width: 640px; }
.section-head { text-align: center; margin: 0 auto 48px; max-width: 720px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn--primary {
  background: var(--color-secondary);
  color: #1a1a1a;
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.btn--outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn--outline:hover { border-color: var(--color-secondary); color: var(--color-secondary); }

/* ---- 3. Header / Nav ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.is-scrolled { border-color: var(--color-border); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand { font-family: var(--font-heading); font-size: 22px; font-weight: 700; }
.brand img { height: 36px; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav a { font-size: 14px; font-weight: 500; }
.nav a:hover { color: var(--color-secondary); }

.lang-toggle {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  font-size: 12px;
  font-weight: 700;
}
.lang-toggle button {
  padding: 6px 12px;
  color: var(--color-text-muted);
}
.lang-toggle button.is-active {
  background: var(--color-primary);
  color: #fff;
}

.nav-toggle { display: none; }

/* ---- 4. Hero ---- */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  color: #fff;
  background: linear-gradient(180deg, rgba(0,0,0,0.35), rgba(0,0,0,0.55)),
              var(--color-primary) center/cover no-repeat;
  /* Thay anh nen that bang: background-image them url('../img/hero.jpg') */
}
.hero-content { max-width: 680px; }
.hero .eyebrow { color: var(--color-secondary); }
.hero h1 { font-size: clamp(36px, 6vw, 64px); color: #fff; margin-bottom: 20px; }
.hero p { font-size: 18px; color: rgba(255,255,255,0.85); margin-bottom: 32px; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- 5. About ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); }
.about-stats { display: flex; gap: 40px; margin-top: 32px; }
.stat-num { font-family: var(--font-heading); font-size: 32px; color: var(--color-secondary); }
.stat-label { font-size: 13px; color: var(--color-text-muted); }

/* ---- 6. Services / Highlights ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft); }
.card-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(201, 163, 93, 0.15);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--color-secondary);
  font-size: 20px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--color-text-muted); font-size: 14.5px; }

/* ---- 7. Gallery ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 16px;
}
.gallery-grid a:nth-child(4n+1) { grid-column: span 2; grid-row: span 2; }
.gallery-grid img, .gallery-grid a { border-radius: var(--radius-md); overflow: hidden; height: 100%; }
.gallery-grid img { height: 100%; width: 100%; object-fit: cover; transition: transform var(--transition); }
.gallery-grid a:hover img { transform: scale(1.06); }

/* ---- 8. Testimonials ---- */
.testimonial-track { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.testimonial-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border);
}
.testimonial-quote { font-style: italic; margin-bottom: 20px; color: var(--color-text); }
.testimonial-name { font-weight: 700; font-size: 14px; }
.testimonial-role { font-size: 12.5px; color: var(--color-text-muted); }

/* ---- 9. Contact ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-item .ico {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  background: var(--color-surface);
}
.form-field input:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
}

/* ---- 10. Footer ---- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer a:hover { color: var(--color-secondary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---- 11. Responsive ---- */
@media (max-width: 900px) {
  .nav { position: fixed; top: 84px; left: 0; right: 0; bottom: 0; background: var(--color-bg);
    flex-direction: column; justify-content: flex-start; padding: 32px 24px; gap: 24px;
    transform: translateX(100%); transition: transform var(--transition); }
  .nav.is-open { transform: translateX(0); }
  .nav-toggle { display: block; font-size: 22px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .card-grid, .testimonial-track { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid a:nth-child(4n+1) { grid-column: span 1; grid-row: span 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ============================================================
   CHAT WIDGET - style dung chung, KHONG doi khi tao site moi
   (doi mau tu dong theo --color-primary / --color-secondary o tren)
   ============================================================ */
.chat-launcher {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-strong);
  z-index: 200;
  font-size: 24px;
  transition: transform var(--transition);
}
.chat-launcher:hover { transform: scale(1.06); }

.chat-window {
  position: fixed;
  right: 24px;
  bottom: 96px;
  width: 360px;
  max-width: calc(100vw - 32px);
  height: 520px;
  max-height: calc(100vh - 140px);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-strong);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 200;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}
.chat-window.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }

.chat-header {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-header-title { font-weight: 700; font-size: 14.5px; }
.chat-header-sub { font-size: 11.5px; color: rgba(255,255,255,0.7); }
.chat-close { color: #fff; font-size: 18px; }

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--color-bg);
}
.chat-msg { max-width: 84%; padding: 10px 14px; border-radius: 14px; font-size: 13.5px; line-height: 1.5; }
.chat-msg--bot {
  align-self: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: 4px;
}
.chat-msg--user {
  align-self: flex-end;
  background: var(--color-secondary);
  color: #1a1a1a;
  border-bottom-right-radius: 4px;
}
.chat-msg--bot a {
  color: var(--color-secondary);
  font-weight: 700;
  text-decoration: underline;
}
.chat-msg--typing { display: flex; gap: 4px; align-items: center; }
.chat-msg--typing span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--color-text-muted);
  animation: chatTyping 1s infinite ease-in-out;
}
.chat-msg--typing span:nth-child(2) { animation-delay: 0.15s; }
.chat-msg--typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes chatTyping { 0%, 60%, 100% { opacity: 0.3; } 30% { opacity: 1; } }

.chat-quick-replies { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 16px 12px; }
.chat-quick-replies button {
  font-size: 12px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 7px 12px;
  background: var(--color-surface);
  transition: border-color var(--transition), color var(--transition);
}
.chat-quick-replies button:hover { border-color: var(--color-secondary); color: var(--color-secondary); }

.chat-quick-replies button.chat-quick-reply--contact {
  border-color: rgba(178, 138, 62, 0.55);
  color: var(--color-secondary);
  background: rgba(178, 138, 62, 0.08);
  font-weight: 600;
}
.chat-quick-replies button.chat-quick-reply--contact:hover { border-color: var(--color-secondary); }

/* lien he nhanh ngay trong chat - form nho gon, khong bat khach roi
   sang section Lien he rieng. */
.chat-contact-card {
  align-self: stretch;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
}
.chat-contact-card__title { font-weight: 700; color: var(--color-primary); font-size: 13.5px; line-height: 1.4; }
.chat-contact-card label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 4px; color: var(--color-text-muted); }
.chat-contact-card input,
.chat-contact-card textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  background: var(--color-bg);
}
.chat-contact-card input:focus,
.chat-contact-card textarea:focus { outline: none; border-color: var(--color-secondary); }
.chat-contact-card textarea { resize: vertical; min-height: 44px; }
.chat-contact-card__actions { display: flex; gap: 8px; margin-top: 2px; }
.chat-contact-card__submit {
  flex: 1;
  background: var(--color-primary);
  color: #fff;
  border-radius: 20px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}
.chat-contact-card__submit:disabled { opacity: 0.55; cursor: not-allowed; }
.chat-contact-card__cancel {
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.chat-contact-card__cancel:hover { border-color: var(--color-secondary); color: var(--color-secondary); }
.chat-contact-card__error { color: #b3261e; font-size: 12px; }

.chat-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.chat-input-row input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 10px 16px;
  font-size: 13.5px;
  font-family: inherit;
}
.chat-input-row input:focus { outline: none; border-color: var(--color-secondary); }
.chat-send {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.chat-send:disabled { opacity: 0.5; cursor: not-allowed; }

/* ================= MSA - bo sung ================= */
.hero-photo{ position:absolute; inset:0; z-index:0; }
.hero-photo img{ width:100%; height:100%; object-fit:cover; display:block; }
.hero-photo::after{ content:""; position:absolute; inset:0;
  background:linear-gradient(100deg, rgba(20,53,110,.93) 0%, rgba(20,53,110,.80) 46%, rgba(20,53,110,.42) 100%); }
.hero .container{ position:relative; z-index:1; }
.hero-content h1, .hero-content p, .hero-content .eyebrow{ color:#fff; }
.hero-content .eyebrow{ color:var(--color-secondary); }
.hero-badges{ display:flex; flex-wrap:wrap; gap:10px; margin-top:26px; }
.hero-badges span{ font-size:12.5px; font-weight:500; color:#fff;
  background:rgba(255,255,255,.13); border:1px solid rgba(255,255,255,.24);
  padding:7px 14px; border-radius:999px; }

.brand-lockup{ display:flex; align-items:center; gap:11px; }
.brand-lockup img{ height:38px; width:auto; display:block; }

.prog-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.prog-card{ background:#fff; border:1px solid var(--color-border); border-radius:var(--radius-md);
  overflow:hidden; display:flex; flex-direction:column; }
.prog-card img{ width:100%; height:210px; object-fit:cover; display:block; cursor:zoom-in; }
.prog-body{ padding:26px 24px 28px; display:flex; flex-direction:column; flex:1; }
.prog-age{ display:inline-block; align-self:flex-start; font-size:11.5px; font-weight:600;
  letter-spacing:.05em; text-transform:uppercase; color:var(--color-primary);
  background:rgba(20,53,110,.09); padding:4px 11px; border-radius:999px; margin-bottom:12px; }
.prog-body h3{ font-family:var(--font-heading); font-size:24px; color:var(--color-primary); margin:0 0 12px; line-height:1.25; }
.prog-body p{ font-size:14.5px; line-height:1.7; color:var(--color-text-muted); margin:0 0 16px; }
.prog-skills{ display:flex; flex-wrap:wrap; gap:7px; margin-top:auto; }
.prog-skills span{ font-size:12px; color:var(--color-primary); background:var(--color-bg);
  border:1px solid var(--color-border); padding:5px 10px; border-radius:6px; }
@media (max-width:820px){ .prog-grid{ grid-template-columns:1fr; } }

.partner-row{ display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:34px 48px; }
.partner-row img{ height:52px; width:auto; object-fit:contain; opacity:.82; }

.moment-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.moment-grid figure{ margin:0; }
.moment-grid img{ width:100%; height:250px; object-fit:cover; display:block; border-radius:var(--radius-sm); cursor:zoom-in; }
.moment-grid figcaption{ font-size:12.5px; color:var(--color-text-muted); margin-top:8px; line-height:1.5; }
@media (max-width:980px){ .moment-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .moment-grid{ grid-template-columns:1fr; } }

.vid-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.vid-card{ display:block; text-decoration:none; }
.vid-thumb{ position:relative; border-radius:var(--radius-sm); overflow:hidden; }
.vid-thumb img{ width:100%; height:180px; object-fit:cover; display:block; }
.vid-thumb::after{ content:"▶"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:30px; background:rgba(0,0,0,.32); transition:background var(--transition); }
.vid-card:hover .vid-thumb::after{ background:rgba(0,0,0,.16); }
.vid-card p{ font-size:14px; color:var(--color-text); margin-top:10px; line-height:1.55; font-weight:500; }
@media (max-width:860px){ .vid-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .vid-grid{ grid-template-columns:1fr; } }

.note-line{ font-size:13px; color:var(--color-text-muted); text-align:center; margin-top:22px; line-height:1.6; }
.doc-box{ background:var(--color-primary); color:#fff; border-radius:var(--radius-md); padding:clamp(30px,4vw,52px); }
.doc-box h2{ font-family:var(--font-heading); font-size:clamp(26px,3vw,36px); margin:0 0 12px; color:#fff; }
.doc-box p{ font-size:15px; line-height:1.7; color:rgba(255,255,255,.86); margin:0 0 22px; max-width:640px; }
.doc-box .form-field input, .doc-box .form-field select, .doc-box .form-field textarea{
  background:rgba(255,255,255,.10); border-color:rgba(255,255,255,.26); color:#fff; }
.doc-box .form-field input::placeholder, .doc-box .form-field textarea::placeholder{ color:rgba(255,255,255,.55); }
.doc-box label{ color:rgba(255,255,255,.86); }

/* ---- lop bo tro (framework goc chua dinh nghia) ---- */
.icon-svg{ display:inline-block; vertical-align:middle; }
.icon-svg .fill{ fill:currentColor; }
.icon-svg .stroke{ stroke:currentColor; fill:none; }
.icon-svg--light{ color:#fff; }

.header-cta{ display:flex; align-items:center; gap:12px; }
.header-hotline{
  display:inline-flex; align-items:center; gap:7px;
  font-size:14px; font-weight:600; color:var(--color-primary);
  background:rgba(20,53,110,.07); border:1px solid var(--color-border);
  padding:8px 15px; border-radius:999px; text-decoration:none;
  transition:background var(--transition);
}
.header-hotline:hover{ background:rgba(20,53,110,.13); }
@media (max-width:620px){ .hotline-text{ display:none; } .header-hotline{ padding:9px 11px; } }

.about-copy{ display:flex; flex-direction:column; justify-content:center; }
.about-list{ list-style:none; padding:0; margin:0 0 6px; display:flex; flex-direction:column; gap:12px; }
.about-list li{ position:relative; padding-left:26px; font-size:14.5px; line-height:1.65; color:var(--color-text); }
.about-list li::before{
  content:""; position:absolute; left:0; top:6px; width:15px; height:15px; border-radius:50%;
  background:var(--color-secondary); opacity:.22;
}
.about-list li::after{
  content:""; position:absolute; left:4.5px; top:10px; width:6px; height:3px;
  border-left:2px solid var(--color-primary); border-bottom:2px solid var(--color-primary);
  transform:rotate(-45deg);
}

.contact-form{ display:grid; grid-template-columns:1fr 1fr; gap:18px; max-width:820px; margin:0 auto; }
.contact-form .form-field--full{ grid-column:1 / -1; }
@media (max-width:640px){ .contact-form{ grid-template-columns:1fr; } }

.footer-social{ display:flex; gap:12px; margin-top:16px; }
.footer-social a{
  width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,.12); transition:background var(--transition);
}
.footer-social a:hover{ background:rgba(255,255,255,.24); }
.footer-social svg{ width:17px; height:17px; }

/* ---- SUA: header fixed cao 84px, moi trang phai chua cho ---- */
.hero{ padding-top: 116px; padding-bottom: 64px; min-height: 88vh; }
.page-top{ padding-top: calc(84px + clamp(40px, 5vw, 76px)); }

/* ---- SUA: tieu de hero - dong tieng Viet dung font Latin cho de doc,
        ten thuong hieu tieng Anh moi dung font serif ---- */
.hero h1{
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.hero-brand-en{
  font-family: var(--font-heading);
  font-size: clamp(19px, 2.1vw, 27px);
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 0.05em;
  margin: 0 0 22px;
  line-height: 1.3;
}
.hero p{ font-size: clamp(15px, 1.15vw, 17.5px); line-height: 1.72; max-width: 560px; margin-bottom: 28px; }

@media (max-width: 780px){
  .hero{ padding-top: 104px; padding-bottom: 52px; min-height: 0; }
  .hero h1{ font-size: clamp(27px, 7.2vw, 36px); }
  .hero-brand-en{ font-size: clamp(16px, 4.4vw, 21px); }
}

/* ---- SUA: logo nen trong, dong bo header & footer ---- */
.brand-lockup img{ height: 50px; width: auto; display: block; }
@media (max-width: 620px){ .brand-lockup img{ height: 36px; } }

.footer-logo{
  width: 210px; height: auto; display: block;
  margin: 0 0 18px;
}
.site-footer{ background: var(--color-primary); }
.site-footer h4{ color: #fff; }

/* dai doi tac: nen trang mem cho logo den khong bi chim */
.partner-row{ background:#fff; border:1px solid var(--color-border); border-radius:var(--radius-md); padding:30px 34px; }
.partner-row img{ height:46px; opacity:1; filter:none; }