@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ============ TOKENS ============ */
:root {
  --brand-blue: #1E82FE;
  --brand-cyan: #17D2FF;
  --brand-navy: #2B2192;
  --navy-deep: #1A1442;
  --brand-gradient: linear-gradient(100deg, var(--brand-blue), var(--brand-cyan));
  --bg-page: #FFFFFF;
  --bg-soft: #F5F7FE;
  --bg-navy-tint: #F1F0FB;
  --ink: #1B1D2E;
  --ink-dim: #5B5F7A;
  --ink-faint: #8A8FB0;
  --line: #E7EAF6;
  --radius-lg: 16px;
  --radius-md: 12px;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --shadow-card: 0 8px 22px -14px rgba(43,33,146,0.18);
  --shadow-lift: 0 18px 40px -18px rgba(43,33,146,0.3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-page);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-weight: 800; margin: 0; letter-spacing: -0.015em; color: var(--navy-deep); }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.grad-text { background: var(--brand-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }

.section-head { max-width: 600px; margin-bottom: 18px; }
.section-eyebrow { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--brand-blue); margin: 0 0 7px; font-weight: 700; }
.section-head h2 { font-size: 26px; line-height: 1.25; }
.section-sub { font-size: 14px; color: var(--ink-dim); margin-top: 8px; max-width: 600px; }

section { padding: 40px 0; }

/* ============ HEADER ============ */
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(255,255,255,0.94); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height:54px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: 800; }
.logo-icon { width: 22px; height: 22px; object-fit: contain; }
.logo span { color: var(--brand-blue); }
.logo span b { color: var(--navy-deep); }
.main-nav { display: flex; gap: 22px; font-size: 13.5px; color: var(--ink-dim); font-weight: 600; }
.main-nav a:hover { color: var(--brand-blue); }
.header-cta { display: flex; align-items: center; gap: 12px; }

.btn-ghost { font-size: 13px; color: var(--ink-dim); font-weight: 600; }
.btn-ghost:hover { color: var(--navy-deep); }
.btn-solid {
  background: var(--brand-gradient); color: #fff; font-weight: 700; font-size: 13px;
  padding: 8px 15px; border-radius: 9px; display: inline-block;
  box-shadow: 0 6px 14px -7px rgba(30,130,254,0.5);
}
.btn-solid:hover { filter: brightness(1.04); }
.btn-outline {
  border: 1.5px solid var(--line); color: var(--navy-deep); font-weight: 700; font-size: 13px;
  padding: 8px 15px; border-radius: 9px; display: inline-block; background: #fff;
}
.btn-outline:hover { border-color: var(--brand-blue); color: var(--brand-blue); }
.btn-lg { padding: 12px 22px; font-size: 14px; border-radius: 10px; }
.btn-block { display: block; text-align: center; width: 100%; }

/* ============ HERO ============ */
.hero { padding: 36px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.badge {
  display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--brand-blue);
  background: var(--bg-navy-tint); padding: 5px 13px; border-radius: 999px; margin-bottom: 14px;
}
.hero h1 { font-size: 34px; line-height: 1.24; }
.hero-sub { font-size: 14.5px; color: var(--ink-dim); max-width: 440px; margin: 14px 0 22px; }
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-stats { display: flex; gap: 26px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 18px; color: var(--navy-deep); font-weight: 800; }
.hero-stats span { font-size: 11.5px; color: var(--ink-faint); }

/* ============ HERO MOCKUP - 3 lớp tạo chiều sâu ============ */
.hero-mockup { position: relative; padding: 10px; }
.mockup-layer {
  position: absolute; border-radius: 22px; z-index: 0;
}
.mockup-layer--back {
  inset: 26px -14px -14px 26px; background: var(--bg-navy-tint);
  transform: rotate(-2.5deg);
}
.mockup-layer--mid {
  inset: 14px -6px -6px 14px; background: linear-gradient(160deg, #EAF3FF, #F4EFFF);
  border: 1px solid var(--line); transform: rotate(-1.2deg);
}
.studio-card {
  position: relative; z-index: 1;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift); overflow: hidden;
}
.studio-titlebar {
  display: flex; align-items: center; gap: 6px; padding: 11px 15px;
  background: var(--navy-deep);
}
.dot { width: 7px; height: 7px; border-radius: 50%; }
.dot-r { background: #F87171; } .dot-y { background: #FBBF24; } .dot-g { background: #34D399; }
.studio-title { color: #fff; font-size: 12px; font-weight: 700; margin-left: 7px; }
.studio-status { margin-left: auto; font-size: 10.5px; font-weight: 700; color: #6EE7B7; display: flex; align-items: center; gap: 5px; }
.studio-status i { width: 6px; height: 6px; border-radius: 50%; background: #34D399; display: inline-block; }

.studio-body { padding: 16px; display: flex; flex-direction: column; gap: 11px; background: var(--bg-soft); }
.studio-row label { display: block; font-size: 10.5px; font-weight: 700; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 5px; }
.studio-field {
  background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px;
  font-size: 13px; color: var(--ink);
}
.studio-field--muted { color: var(--ink-dim); font-size: 12px; }
.studio-output-box { background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; }
.studio-output-box p { font-size: 12.5px; color: var(--ink); margin-bottom: 4px; line-height: 1.5; }
.studio-output-box p:last-child { margin-bottom: 0; }
.studio-output-box b { color: var(--navy-deep); }
.fade-line { color: var(--ink-faint) !important; }

.studio-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.voice-pill-row { display: flex; gap: 6px; flex-wrap: wrap; }
.voice-pill { font-size: 11.5px; font-weight: 600; padding: 6px 11px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--ink-dim); white-space: nowrap; }
.voice-pill--active { background: var(--brand-gradient); color: #fff; border-color: transparent; }
.credit-meter-top { font-size: 11px; color: var(--ink-faint); margin-bottom: 5px; text-align: right; }
.credit-bar { height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; }
.credit-bar-fill { width: 97%; height: 100%; background: var(--brand-gradient); }

.studio-wave-row { display: flex; align-items: center; gap: 10px; }
.mini-wave { flex: 1; height: 30px; display: flex; align-items: center; gap: 2px; background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 0 9px; }
.mini-wave span { flex: 1; background: var(--brand-gradient); border-radius: 2px; min-height: 3px; }
.studio-generate { background: var(--navy-deep); color: #fff; border: none; font-size: 12px; font-weight: 700; padding: 8px 14px; border-radius: 9px; cursor: pointer; white-space: nowrap; }
.studio-generate:hover { background: #241C60; }

.file-chip {
  font-size: 11.5px; background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 12px; color: var(--ink-dim); display: flex; align-items: center; justify-content: space-between;
}
.file-chip span { color: var(--brand-blue); font-weight: 700; }

/* ============ TOOLS ============ */
.tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.tool-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 17px; box-shadow: var(--shadow-card); transition: transform 0.18s ease, box-shadow 0.18s ease; }
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.tool-icon { width: 34px; height: 34px; border-radius: 9px; background: var(--bg-navy-tint); color: var(--brand-blue); display: flex; align-items: center; justify-content: center; margin-bottom: 11px; }
.tool-icon svg { width: 17px; height: 17px; }
.tool-card h3 { font-size: 14.5px; margin-bottom: 5px; }
.tool-card p { font-size: 12.5px; color: var(--ink-dim); line-height: 1.5; }

/* ============ HOW IT WORKS ============ */
.how { background: var(--bg-soft); }
.how-flow { display: flex; align-items: flex-start; gap: 0; }
.how-step { flex: 1; text-align: center; padding: 0 8px; }
.how-num { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 50%; background: var(--brand-gradient); color: #fff; font-weight: 800; font-size: 13px; margin-bottom: 10px; }
.how-step h3 { font-size: 14.5px; margin-bottom: 4px; }
.how-step p { font-size: 12.5px; color: var(--ink-dim); max-width: 210px; margin: 0 auto; }
.how-line { flex: 0 0 50px; height: 1.5px; background: var(--line); margin-top: 15px; }

/* ============ VOICES ============ */
.voice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.voice-card { display: flex; align-items: center; gap: 11px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 12px 13px; box-shadow: var(--shadow-card); }
.voice-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--brand-gradient); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 800; flex-shrink: 0; }
.voice-avatar--male { background: linear-gradient(135deg, #2f80ff 0%, #1e63e0 100%); }
.voice-avatar--female { background: linear-gradient(135deg, #ff6fa5 0%, #e0499a 100%); }
.voice-avatar svg { width: 18px; height: 18px; }
.voice-info { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.voice-name { font-size: 13.5px; color: var(--ink); font-weight: 700; }
.voice-meta { font-size: 11.5px; color: var(--ink-dim); }
.voice-provider { display: inline-block; align-self: flex-start; font-size: 10px; font-weight: 700; color: var(--brand-blue); background: var(--bg-navy-tint); padding: 2px 7px; border-radius: 999px; margin-top: 2px; }
.voice-provider--pro { color: var(--navy-deep); background: #EDE9FE; }
.voice-play { width: 29px; height: 29px; border-radius: 50%; border: 1px solid var(--line); background: #fff; color: var(--brand-blue); font-size: 10.5px; cursor: pointer; flex-shrink: 0; transition: background 0.15s ease, color 0.15s ease; }
.voice-play:hover, .voice-play.is-playing { background: var(--brand-gradient); color: #fff; border-color: transparent; }
.voice-hint { font-size: 12px; color: var(--ink-faint); margin-top: 14px; }
.voice-hint a { color: var(--brand-blue); font-weight: 600; }

/* ============ PRICING ============ */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; align-items: stretch; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 19px; box-shadow: var(--shadow-card); display: flex; flex-direction: column; }
.price-card--featured { border-color: var(--brand-blue); box-shadow: var(--shadow-lift); position: relative; }
.price-badge { position: absolute; top: -10px; left: 19px; background: var(--brand-gradient); color: #fff; font-size: 10px; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.price-name { font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--brand-blue); }
.price-amount { font-size: 23px; font-weight: 800; color: var(--navy-deep); margin: 7px 0 1px; }
.price-amount small { font-size: 12px; font-weight: 500; color: var(--ink-faint); }
.price-credit { font-size: 12px; color: var(--ink-dim); margin-bottom: 13px; }
.price-card ul { margin-bottom: 16px; flex: 1; }
.price-card li { font-size: 12.5px; color: var(--ink); padding: 4px 0; }
.price-card li::before { content: "✓  "; color: #16A34A; font-weight: 700; }

/* ============ FOOTER ============ */
.site-footer { border-top: 1px solid var(--line); padding: 38px 0 20px; background: linear-gradient(180deg, var(--bg-navy-tint), #ECEAF9); }
.footer-inner { display: flex; justify-content: space-between; gap: 36px; flex-wrap: wrap; margin-bottom: 28px; }
.footer-brand p { color: var(--ink-dim); font-size: 12.5px; max-width: 230px; margin-top: 9px; }
.footer-links { display: flex; gap: 42px; }
.footer-links h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); margin: 0 0 9px; font-weight: 700; }
.footer-links a { display: block; font-size: 13px; color: var(--ink); margin-bottom: 6px; }
.footer-links a:hover { color: var(--brand-blue); }
.footer-bottom { font-size: 11.5px; color: var(--ink-faint); border-top: 1px solid rgba(43,33,146,0.12); padding-top: 14px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .voice-grid { grid-template-columns: 1fr 1fr; }
  .how-flow { flex-direction: column; align-items: stretch; gap: 18px; }
  .how-line { display: none; }
  .how-step { text-align: left; }
  .how-step p { margin: 0; }
  .mockup-layer { display: none; }
}
@media (max-width: 640px) {
  .main-nav { display: none; }
  .tool-grid { grid-template-columns: 1fr; }
  .voice-grid { grid-template-columns: 1fr; }
  .studio-two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 27px; }
  .footer-links { gap: 26px; flex-wrap: wrap; }
}

a:focus-visible, button:focus-visible { outline: 2px solid var(--brand-blue); outline-offset: 2px; }

/* ép chắc chắn ẩn được sticker dù display:flex có specificity ngang hàng */
.promo-sticker.hidden { display: none !important; }

/* ===== STICKER KHUYẾN MÃI (cam, to hơn, mờ trong suốt, lắc như treo trên móc) ===== */
.promo-sticker {
  position: fixed; bottom: 40px; right: 30px; z-index: 200; max-width: 380px;
  background: linear-gradient(135deg, rgba(255,140,26,.88) 0%, rgba(255,94,0,.88) 100%);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  color: #fff; border-radius: 20px; padding: 22px 24px 20px; box-shadow: 0 20px 50px rgba(255,94,0,.4);
  border: 1px solid rgba(255,255,255,.25);
  display: flex; flex-direction: column; gap: 14px;
  transform-origin: top center;
  animation: promoFadeIn .3s ease, promoSwing 2.8s ease-in-out infinite;
}
.promo-sticker::before {
  content: ""; position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  width: 2px; height: 14px; background: rgba(255,255,255,.6);
}
.promo-sticker::after {
  content: ""; position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.85);
  box-shadow: 0 0 0 2px rgba(255,94,0,.3);
}
@keyframes promoFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes promoSwing {
  0%, 100% { transform: rotate(-2.5deg); }
  50% { transform: rotate(2.5deg); }
}
.promo-sticker #promoStickerClose {
  position: absolute; top: 10px; right: 12px; background: none; border: none; color: rgba(255,255,255,.85);
  font-size: 15px; cursor: pointer; padding: 4px;
}
.promo-sticker #promoStickerText { font-size: 16px; font-weight: 700; line-height: 1.45; padding-right: 16px; }
.promo-sticker-cta {
  display: inline-block; background: #fff; color: #FF5E00; font-weight: 800; font-size: 14.5px;
  padding: 11px 18px; border-radius: 12px; text-align: center; text-decoration: none;
}
.promo-sticker-cta:hover { background: #FFF3E8; }

.promo-pos-bottom-right { bottom: 60px; right: 60px; top: auto; left: auto; }
.promo-pos-bottom-left { bottom: 60px; left: 60px; top: auto; right: auto; }
.promo-pos-top-left { top: 60px; left: 60px; bottom: auto; right: auto; }
.promo-pos-top-right { top: 60px; right: 60px; bottom: auto; left: auto; }
.promo-pos-top-center { top: 60px; left: calc(50% - 190px); bottom: auto; right: auto; }
@media (max-width: 600px) {
  .promo-pos-top-center { left: 16px; right: 16px; }
}

.promo-pos-center {
  top: 50%; left: 50%; bottom: auto; right: auto;
  translate: -50% -50%;
}
.promo-sticker.has-image.promo-pos-center #promoStickerImage,
.promo-sticker.has-image #promoStickerImage {
  max-width: 90vw; max-height: 85vh; width:auto; height: auto;
}

.promo-sticker.has-image {
  background: none !important; backdrop-filter: none !important; -webkit-backdrop-filter: none !important;
  border: none !important; box-shadow: none !important; padding: 0 !important; max-width: 300px;
}
.promo-sticker.has-image::before, .promo-sticker.has-image::after { display: none !important; }
.promo-sticker.has-image .promo-sticker-cta,
.promo-sticker.has-image #promoStickerText {
  display: none !important; visibility: hidden !important;
}
.promo-sticker.has-image #promoStickerClose {
  top: -6px; right: -6px; background: #fff; border-radius: 50%; width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,.25);
  color: #333; font-size: 12px; z-index: 10;
}
.promo-sticker.has-image #promoStickerImageLink { position: relative; z-index: 1; }
@media (max-width: 600px) {
  .promo-sticker { left: 16px; right: 16px; bottom: 16px; max-width: none; }
}
/* ===== Landing logo sync with app ===== */
.landing-logo-img {
  width: 106px !important;
  max-width: 106px !important;
  height: auto !important;
  display: block !important;
  object-fit: contain !important;
}
.site-logo img,
.nav-logo img,
.header-logo img,
.logo img {
  width: 106px !important;
  max-width: 106px !important;
  height: auto !important;
  object-fit: contain !important;
}
.site-logo,
.nav-logo,
.header-logo,
.logo {
  display: flex !important;
  align-items: center !important;
}

/* Hide duplicated text next to real VivoAI logo */
.logo > span,
.logo > strong,
.logo-text,
.brand-text,
.nav-brand span,
.nav-brand strong,
.header-logo span,
.site-logo span {
  display: none !important;
}

.logo img,
.nav-brand img,
.header-logo img,
.site-logo img,
.landing-logo-img {
  width: 106px !important;
  max-width: 106px !important;
  height: auto !important;
  object-fit: contain !important;
}


/* ===== VivoAI Zalo Contact Popup ===== */
.vivo-modal-open {
  overflow: hidden;
}

.vivo-zalo-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 9990;
  min-height: 54px;
  padding: 8px 17px 8px 8px;
  border: 0;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #0879f9, #09c4ee);
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 750;
  cursor: pointer;
  box-shadow:
    0 18px 42px rgba(0, 122, 255, 0.28),
    inset 0 1px 0 rgba(255,255,255,.32);
  transition:
    transform .2s ease,
    box-shadow .2s ease;
}

.vivo-zalo-float:hover {
  transform: translateY(-3px);
  box-shadow:
    0 23px 52px rgba(0, 122, 255, 0.35),
    inset 0 1px 0 rgba(255,255,255,.38);
}

.vivo-zalo-symbol {
  position: relative;
  z-index: 2;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: #0879f9;
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(0, 73, 177, .2);
}

.vivo-zalo-pulse {
  position: absolute;
  left: 8px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.38);
  animation: vivoZaloPulse 1.8s infinite;
}

@keyframes vivoZaloPulse {
  0% {
    transform: scale(.9);
    opacity: .72;
  }
  75%,
  100% {
    transform: scale(1.75);
    opacity: 0;
  }
}

.vivo-contact-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, .56);
  backdrop-filter: blur(7px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity .22s ease,
    visibility .22s ease;
}

.vivo-contact-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.vivo-contact-modal {
  position: relative;
  width: min(460px, 100%);
  padding: 30px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 26px;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 20px;
  background:
    radial-gradient(circle at 100% 0%, rgba(20,184,255,.15), transparent 36%),
    #fff;
  box-shadow: 0 30px 90px rgba(15,23,42,.28);
  transform: translateY(15px) scale(.97);
  transition: transform .22s ease;
}

.vivo-contact-overlay.is-open .vivo-contact-modal {
  transform: translateY(0) scale(1);
}

.vivo-contact-close {
  position: absolute;
  top: 13px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: #f1f5f9;
  color: #334155;
  font-size: 23px;
  line-height: 1;
  cursor: pointer;
}

.vivo-contact-close:hover {
  background: #e2e8f0;
}

.vivo-contact-icon {
  width: 68px;
  height:54px;
  border-radius: 21px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0879f9, #0ecbf0);
  color: #fff;
  font-size: 34px;
  font-weight: 900;
  box-shadow:
    0 16px 32px rgba(8,121,249,.28),
    inset 0 1px 0 rgba(255,255,255,.4);
}

.vivo-contact-content {
  min-width: 0;
}

.vivo-contact-eyebrow {
  display: block;
  margin-bottom: 7px;
  color: #0879f9;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .09em;
}

.vivo-contact-content h3 {
  margin: 0 35px 8px 0;
  color: #15123e;
  font-size: 21px;
  line-height: 1.32;
}

.vivo-contact-content p {
  margin: 0 0 14px;
  color: #64748b;
  font-size: 13.5px;
  line-height: 1.65;
}

.vivo-contact-phone {
  display: inline-block;
  margin-bottom: 16px;
  color: #15123e;
  font-size: 24px;
  font-weight: 850;
  text-decoration: none;
  letter-spacing: .02em;
}

.vivo-contact-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 13px;
}

.vivo-contact-btn {
  min-height: 43px;
  padding: 0 17px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 750;
}

.vivo-contact-btn-primary {
  background: linear-gradient(135deg, #0879f9, #0ecbf0);
  color: #fff;
  box-shadow: 0 12px 24px rgba(8,121,249,.2);
}

.vivo-contact-btn-secondary {
  border: 1px solid #dbe4f0;
  background: #fff;
  color: #15123e;
}

.vivo-contact-content small {
  color: #94a3b8;
  font-size: 11.5px;
}

.vivo-footer-contact {
  width: min(1180px, calc(100% - 40px));
  margin: 18px auto 0;
  padding-top: 16px;
  border-top: 1px solid rgba(148,163,184,.2);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: #94a3b8;
  font-size: 12.5px;
}

.vivo-footer-contact a {
  color: inherit;
  font-weight: 650;
  text-decoration: none;
}

.vivo-footer-contact a:hover {
  color: #0b8df5;
}

.vivo-footer-dot {
  opacity: .55;
}

@media (max-width: 640px) {
  .vivo-zalo-float {
    right: 14px;
    bottom: 15px;
    min-height: 50px;
    padding: 6px;
  }

  .vivo-zalo-label {
    display: none;
  }

  .vivo-zalo-symbol,
  .vivo-zalo-pulse {
    width: 38px;
    height: 38px;
  }

  .vivo-contact-modal {
    padding: 25px 20px 22px;
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .vivo-contact-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    font-size: 28px;
  }

  .vivo-contact-content h3 {
    font-size: 19px;
  }

  .vivo-contact-actions {
    flex-direction: column;
  }

  .vivo-contact-btn {
    width: 100%;
  }
}


/* ===== Zalo compact premium override ===== */

.vivo-zalo-float {
  left: 18px !important;
  right: auto !important;
  bottom: 18px !important;

  min-height: 44px !important;
  padding: 5px 12px 5px 5px !important;
  gap: 8px !important;

  border-radius: 14px !important;
  font-size: 12.5px !important;
  font-weight: 700 !important;

  box-shadow:
    0 10px 24px rgba(8,121,249,.22),
    inset 0 1px 0 rgba(255,255,255,.28) !important;
}

.vivo-zalo-float:hover {
  transform: translateY(-2px) !important;
  box-shadow:
    0 14px 30px rgba(8,121,249,.28),
    inset 0 1px 0 rgba(255,255,255,.34) !important;
}

.vivo-zalo-symbol {
  width: 34px !important;
  height: 34px !important;
  font-size: 17px !important;
  border-radius: 11px !important;
}

.vivo-zalo-pulse {
  left: 5px !important;
  width: 34px !important;
  height: 34px !important;
}

.vivo-zalo-label {
  white-space: nowrap !important;
}

/* popup nhỏ, thật và gọn */
.vivo-contact-overlay {
  padding: 16px !important;
  background: rgba(15,23,42,.48) !important;
  backdrop-filter: blur(5px) !important;
}

.vivo-contact-modal {
  width: min(360px, 100%) !important;
  padding: 20px !important;

  grid-template-columns: 52px minmax(0,1fr) !important;
  gap: 14px !important;

  border-radius: 18px !important;
  background: #fff !important;

  box-shadow:
    0 20px 60px rgba(15,23,42,.22) !important;
}

.vivo-contact-icon {
  width: 52px !important;
  height: 52px !important;

  border-radius: 15px !important;
  font-size: 24px !important;

  box-shadow:
    0 10px 22px rgba(8,121,249,.22),
    inset 0 1px 0 rgba(255,255,255,.35) !important;
}

.vivo-contact-close {
  top: 10px !important;
  right: 10px !important;

  width: 30px !important;
  height: 30px !important;

  font-size: 19px !important;
}

.vivo-contact-eyebrow {
  margin-bottom: 5px !important;
  font-size: 10px !important;
}

.vivo-contact-content h3 {
  margin: 0 28px 6px 0 !important;
  font-size: 17px !important;
  line-height: 1.3 !important;
}

.vivo-contact-content p {
  margin: 0 0 10px !important;
  font-size: 12.5px !important;
  line-height: 1.55 !important;
}

.vivo-contact-phone {
  margin-bottom: 12px !important;
  font-size: 20px !important;
}

.vivo-contact-actions {
  gap: 8px !important;
  margin-bottom: 9px !important;
}

.vivo-contact-btn {
  min-height: 38px !important;
  padding: 0 13px !important;

  border-radius: 9px !important;
  font-size: 12.5px !important;
}

.vivo-contact-content small {
  font-size: 10.5px !important;
}

@media (max-width: 640px) {
  .vivo-zalo-float {
    left: 12px !important;
    right: auto !important;
    bottom: 12px !important;

    min-height: 42px !important;
    padding: 4px !important;
  }

  .vivo-zalo-label {
    display: none !important;
  }

  .vivo-contact-modal {
    width: min(330px, 100%) !important;
    padding: 18px !important;

    grid-template-columns: 46px minmax(0,1fr) !important;
    gap: 12px !important;
  }

  .vivo-contact-icon {
    width: 46px !important;
    height: 46px !important;

    font-size: 22px !important;
  }

  .vivo-contact-content h3 {
    font-size: 16px !important;
  }

  .vivo-contact-actions {
    flex-direction: row !important;
  }

  .vivo-contact-btn {
    width: auto !important;
    flex: 1 !important;
  }
}


/* ===== Direct Zalo button ===== */
#vivoZaloContact,
.vivo-contact-overlay,
.vivo-contact-modal {
  display: none !important;
}

.vivo-direct-zalo {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 9999;

  display: inline-flex;
  align-items: center;
  gap: 9px;

  min-height: 48px;
  padding: 6px 14px 6px 6px;

  border: 1px solid rgba(255,255,255,.7);
  border-radius: 16px;

  background:
    linear-gradient(135deg, #0879f9 0%, #0aaef0 55%, #15c7e8 100%);

  color: #fff;
  text-decoration: none;

  box-shadow:
    0 14px 34px rgba(8,121,249,.28),
    inset 0 1px 0 rgba(255,255,255,.38);

  transition:
    transform .2s ease,
    box-shadow .2s ease,
    filter .2s ease;
}

.vivo-direct-zalo:hover {
  transform: translateY(-3px);
  filter: brightness(1.03);
  box-shadow:
    0 20px 44px rgba(8,121,249,.36),
    inset 0 1px 0 rgba(255,255,255,.46);
}

.vivo-direct-zalo:active {
  transform: translateY(-1px) scale(.98);
}

.vivo-direct-zalo-icon {
  position: relative;
  z-index: 2;

  width: 36px;
  height: 36px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  border-radius: 12px;
  background: rgba(255,255,255,.96);
  color: #0879f9;

  font-size: 18px;
  font-weight: 900;

  box-shadow:
    0 8px 18px rgba(0,61,140,.18),
    inset 0 1px 0 #fff;
}

.vivo-direct-zalo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.vivo-direct-zalo-text strong {
  font-size: 12.5px;
  font-weight: 800;
  color: #fff;
}

.vivo-direct-zalo-text small {
  margin-top: 3px;
  font-size: 10.5px;
  font-weight: 600;
  color: rgba(255,255,255,.86);
}

.vivo-direct-zalo-glow {
  position: absolute;
  left: 6px;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(255,255,255,.28);
  animation: vivoDirectZaloPulse 1.8s infinite;
}

@keyframes vivoDirectZaloPulse {
  0% {
    transform: scale(.92);
    opacity: .65;
  }
  70%,
  100% {
    transform: scale(1.65);
    opacity: 0;
  }
}

@media (max-width: 640px) {
  .vivo-direct-zalo {
    left: 12px;
    bottom: 12px;
    min-height: 44px;
    padding: 5px;
    border-radius: 14px;
  }

  .vivo-direct-zalo-text {
    display: none;
  }

  .vivo-direct-zalo-icon,
  .vivo-direct-zalo-glow {
    width: 34px;
    height: 34px;
    border-radius: 11px;
  }
}


/* ===== VivoAI floating contact buttons ===== */
#vivoDirectZalo,
#vivoZaloContact,
.vivo-direct-zalo,
.vivo-zalo-float,
.vivo-contact-overlay {
  display: none !important;
}

.vivo-floating-contacts {
  position: fixed;
  left: 18px;
  bottom: 88px;
  z-index: 9998;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.vivo-contact-fab {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;

  display: flex;
  align-items: center;
  justify-content: center;

  color: #fff;
  text-decoration: none;

  border: 3px solid rgba(255,255,255,.96);

  box-shadow:
    0 10px 24px rgba(15,23,42,.2),
    inset 0 1px 0 rgba(255,255,255,.3);

  transition:
    transform .2s ease,
    box-shadow .2s ease,
    filter .2s ease;
}

.vivo-contact-fab:hover {
  transform: translateY(-2px) scale(1.05);
  filter: brightness(1.04);
  box-shadow:
    0 15px 32px rgba(15,23,42,.26),
    inset 0 1px 0 rgba(255,255,255,.42);
}

.vivo-contact-fab svg {
  width: 23px;
  height: 23px;
}

.vivo-contact-fab--phone {
  background: linear-gradient(135deg, #65c900, #3caf00);
}

.vivo-contact-fab--zalo {
  background: #fff;
  border-color: #18bce8;
  color: #139fd0;
  box-shadow:
    0 10px 24px rgba(14,165,233,.22),
    inset 0 0 0 2px rgba(24,188,232,.2);
}

.vivo-contact-fab--email {
  background: linear-gradient(135deg, #ffb000, #f28a00);
}

.vivo-zalo-word {
  width: 34px;
  height: 34px;
  border: 2px solid #1bbbe6;
  border-radius: 50%;

  display: flex;
  align-items: center;
  justify-content: center;

  font-size: 9px;
  font-weight: 850;
  letter-spacing: -.02em;
  color: #129ed1;
  background: #fff;
}

.vivo-contact-tooltip {
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(-4px);

  min-width: max-content;
  max-width: 240px;
  padding: 7px 10px;
  border-radius: 8px;

  background: #17203a;
  color: #fff;

  font-size: 11.5px;
  font-weight: 650;
  line-height: 1.2;

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  box-shadow: 0 9px 24px rgba(15,23,42,.18);

  transition:
    opacity .18s ease,
    transform .18s ease,
    visibility .18s ease;
}

.vivo-contact-tooltip::before {
  content: "";
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-right-color: #17203a;
}

.vivo-contact-fab:hover .vivo-contact-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

@media (max-width: 640px) {
  .vivo-floating-contacts {
    left: 10px;
    bottom: 72px;
    gap: 9px;
  }

  .vivo-contact-fab {
    width: 43px;
    height: 43px;
    border-width: 2px;
  }

  .vivo-contact-fab svg {
    width: 20px;
    height: 20px;
  }

  .vivo-zalo-word {
    width: 31px;
    height: 31px;
    font-size: 8px;
  }

  .vivo-contact-tooltip {
    display: none;
  }
}


/* ===== Move floating contacts to middle-right ===== */
.vivo-floating-contacts {
  left: auto !important;
  right: 18px !important;
  top: 50% !important;
  bottom: auto !important;
  transform: translateY(-50%) !important;
  align-items: flex-end !important;
}

.vivo-contact-tooltip {
  left: auto !important;
  right: calc(100% + 10px) !important;
  transform: translateY(-50%) translateX(4px) !important;
}

.vivo-contact-tooltip::before {
  right: auto !important;
  left: 100% !important;
  border-right-color: transparent !important;
  border-left-color: #17203a !important;
}

.vivo-contact-fab:hover .vivo-contact-tooltip {
  transform: translateY(-50%) translateX(0) !important;
}

@media (max-width: 640px) {
  .vivo-floating-contacts {
    right: 10px !important;
    top: 50% !important;
    bottom: auto !important;
    transform: translateY(-50%) !important;
  }
}


/* ===== Public Landing CMS Runtime ===== */
.cms-hero-image {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, .14);
}

.cms-tool-image {
  display: block;
  width: 52px;
  height: 52px;
  margin-bottom: 14px;
  object-fit: cover;
  border-radius: 14px;
}

.faq {
  padding: 54px 0;
  background: #fff;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

.cms-faq-item {
  border: 1px solid var(--line, #e7eaf2);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.cms-faq-question {
  width: 100%;
  min-height: 54px;
  padding: 0 17px;
  border: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink, #17162e);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.cms-faq-question b {
  font-size: 20px;
  font-weight: 400;
  color: #5865f2;
  transition: transform .2s ease;
}

.cms-faq-answer {
  display: none;
  padding: 0 17px 16px;
}

.cms-faq-answer p {
  margin: 0;
  color: var(--ink-dim, #687086);
  font-size: 13px;
  line-height: 1.7;
}

.cms-faq-item.is-open .cms-faq-answer {
  display: block;
}

.cms-faq-item.is-open .cms-faq-question b {
  transform: rotate(45deg);
}


/* ===== Landing Knowledge & Answers ===== */
.landing-answers {
  padding: 58px 0 66px;
  background:
    radial-gradient(
      circle at 8% 10%,
      rgba(29, 177, 255, .08),
      transparent 30%
    ),
    linear-gradient(180deg, #ffffff 0%, #f7f9ff 100%);
}

.landing-answers-head {
  margin-bottom: 24px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.landing-answers-head h2 {
  margin: 5px 0 7px;
  color: var(--ink, #17163d);
  font-size: clamp(25px, 3vw, 35px);
  line-height: 1.25;
  letter-spacing: -.035em;
}

.landing-answers-sub {
  max-width: 700px;
  margin: 0;
  color: var(--ink-dim, #697188);
  font-size: 13.5px;
  line-height: 1.7;
}

.landing-answers-all {
  flex: 0 0 auto;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid #dce2f3;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  color: #35405c;
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 750;
  box-shadow: 0 8px 22px rgba(31, 41, 75, .05);
}

.landing-answers-all:hover {
  border-color: #96a4ff;
  color: #5364f5;
  transform: translateY(-1px);
}

.landing-answers-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 17px;
}

.landing-answer-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #e4e8f2;
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(31, 41, 75, .055);
  transition:
    transform .2s ease,
    box-shadow .2s ease,
    border-color .2s ease;
}

.landing-answer-card:hover {
  transform: translateY(-3px);
  border-color: #cbd3ff;
  box-shadow: 0 18px 45px rgba(31, 41, 75, .10);
}

.landing-answer-cover {
  display: block;
  width: 100%;
  height: 170px;
  overflow: hidden;
  background: #f2f5ff;
  text-decoration: none;
}

.landing-answer-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .25s ease;
}

.landing-answer-card:hover .landing-answer-image {
  transform: scale(1.025);
}

.landing-answer-placeholder {
  width: 100%;
  height: 100%;
  padding: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  background:
    radial-gradient(
      circle at 20% 15%,
      rgba(12, 183, 239, .23),
      transparent 34%
    ),
    radial-gradient(
      circle at 82% 84%,
      rgba(105, 80, 245, .19),
      transparent 38%
    ),
    linear-gradient(135deg, #edf7ff, #f5f0ff);
  color: #697493;
  font-size: 10.5px;
  font-weight: 750;
  letter-spacing: .035em;
  text-transform: uppercase;
}

.landing-answer-placeholder-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #129eff, #6955ef);
  color: #fff;
  font-size: 18px;
  font-weight: 850;
  box-shadow: 0 13px 28px rgba(71, 100, 235, .22);
}

.landing-answer-body {
  padding: 16px 17px 15px;
}

.landing-answer-category {
  margin-bottom: 7px;
  color: #5364f5;
  font-size: 9.5px;
  font-weight: 850;
  letter-spacing: .055em;
  text-transform: uppercase;
}

.landing-answer-body h3 {
  margin: 0 0 7px;
  font-size: 15px;
  line-height: 1.45;
}

.landing-answer-body h3 a {
  color: var(--ink, #17163d);
  text-decoration: none;
}

.landing-answer-body h3 a:hover {
  color: #5364f5;
}

.landing-answer-body p {
  min-height: 58px;
  margin: 0;
  display: -webkit-box;
  overflow: hidden;
  color: var(--ink-dim, #697188);
  font-size: 11.5px;
  line-height: 1.65;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.landing-answer-meta {
  margin-top: 13px;
  padding-top: 11px;
  border-top: 1px solid #edf0f6;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #9aa1b3;
  font-size: 10px;
}

.landing-answer-meta a {
  color: #5364f5;
  text-decoration: none;
  font-weight: 750;
}

.landing-answers-loading,
.landing-answers-empty {
  grid-column: 1 / -1;
  padding: 38px 20px;
  border: 1px dashed #cdd4e5;
  border-radius: 15px;
  background: rgba(255, 255, 255, .7);
  color: #7b8397;
  text-align: center;
  font-size: 13px;
}

.landing-answers-empty a {
  margin-left: 5px;
  color: #5364f5;
  font-weight: 700;
}

@media (max-width: 960px) {
  .landing-answers-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .landing-answers {
    padding: 44px 0 50px;
  }

  .landing-answers-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .landing-answers-grid {
    grid-template-columns: 1fr;
  }

  .landing-answer-cover {
    height: 190px;
  }
}


/* ===== Đồng bộ section Giải đáp với toàn landing ===== */

/* Tiêu đề section đồng bộ kích thước với các section khác */
.landing-answers-head h2 {
  margin: 4px 0 7px !important;
  max-width: 720px !important;
  font-size: 28px !important;
  line-height: 1.3 !important;
  font-weight: 800 !important;
  letter-spacing: -0.025em !important;
}

/* Nhãn section không quá lớn */
.landing-answers .section-eyebrow {
  margin: 0 0 5px !important;
  font-size: 11px !important;
  line-height: 1.3 !important;
  font-weight: 800 !important;
  letter-spacing: .075em !important;
}

/* Tên thư mục/danh mục trong card nhỏ và gọn */
.landing-answer-category {
  margin-bottom: 6px !important;
  font-size: 9px !important;
  line-height: 1.35 !important;
  font-weight: 800 !important;
  letter-spacing: .045em !important;
}

/* Tiêu đề bài viết đồng bộ, không quá lớn */
.landing-answer-body h3 {
  margin: 0 0 7px !important;
  font-size: 14px !important;
  line-height: 1.48 !important;
  font-weight: 750 !important;
}

/* Ảnh card đúng tỷ lệ, không bị phóng quá lớn */
.landing-answer-cover {
  height: 165px !important;
  background: #f2f5ff !important;
}

.landing-answer-image {
  width: 100% !important;
  height: 100% !important;
  display: block !important;
  object-fit: cover !important;
  object-position: center !important;
}

/* Card gọn hơn */
.landing-answer-body {
  padding: 14px 15px 14px !important;
}

.landing-answer-body p {
  min-height: 54px !important;
  font-size: 11.5px !important;
  line-height: 1.6 !important;
}

/* Khoảng cách section đồng bộ */
.landing-answers {
  padding: 50px 0 56px !important;
}

.landing-answers-head {
  margin-bottom: 20px !important;
}

@media (max-width: 680px) {
  .landing-answers-head h2 {
    font-size: 23px !important;
    line-height: 1.35 !important;
  }

  .landing-answer-cover {
    height: 180px !important;
  }
}


/* ===== Widget lien he noi (phone/zalo/messenger/email) ===== */
#vivoFloatingContacts {
  position: fixed;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9999;
}
.vivo-contact-fab--messenger {
  background: linear-gradient(135deg, #00c6ff, #0078ff);
}
@media (max-width: 640px) {
  #vivoFloatingContacts { left: 10px; gap: 9px; }
}