@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800&family=Be+Vietnam+Pro:wght@400;500;600&display=swap');
 
  #linh-vuc {
    --lv-deep:  #0D2B35;
    --lv-teal:  #05858E;
    --lv-teal2: #07A3AD;
    --lv-mint:  #CEF1F2;
    --lv-cream: #F5FBFB;
    --lv-muted: rgba(19,53,65,.55);
  }
 
  #linh-vuc {
    position: relative;
    padding: 100px 0 120px;
    overflow: hidden;
    background:
      radial-gradient(ellipse 55% 50% at 10% 15%, rgba(7,163,173,.10) 0%, transparent 70%),
      radial-gradient(ellipse 50% 60% at 88% 78%, rgba(5,133,142,.08) 0%, transparent 70%),
      linear-gradient(165deg, #F5FBFB 0%, #E8F8F9 45%, #F5FBFB 100%);
  }
 
  #linh-vuc .lv-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(72px);
    pointer-events: none;
    z-index: 0;
  }
  #linh-vuc .lv-orb-1 {
    width: 420px; height: 420px;
    background: rgba(7,163,173,.11);
    top: -90px; left: -80px;
    animation: lvDrift 13s ease-in-out infinite alternate;
  }
  #linh-vuc .lv-orb-2 {
    width: 300px; height: 300px;
    background: rgba(5,133,142,.09);
    bottom: 30px; right: -50px;
    animation: lvDrift 10s 3s ease-in-out infinite alternate;
  }
  @keyframes lvDrift {
    from { transform: translate(0,0) scale(1); }
    to   { transform: translate(28px,18px) scale(1.07); }
  }
 
  #linh-vuc .lv-inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
  }
 
  /* HEADER */
  #linh-vuc .lv-header {
    text-align: center;
    margin-bottom: 60px;
  }
  #linh-vuc .lv-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(7,163,173,.10);
    border: 1px solid rgba(7,163,173,.25);
    border-radius: 100px;
    padding: 6px 18px;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--lv-teal);
    letter-spacing: .05em;
    text-transform: uppercase;
    margin-bottom: 18px;
    animation: lvFadeUp .6s ease both;
  }
  #linh-vuc .lv-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--lv-teal);
    animation: lvPulse 2s infinite;
  }
  @keyframes lvPulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.45;transform:scale(1.5)} }
 
  #linh-vuc .lv-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: clamp(2rem, 3.8vw, 2.9rem);
    font-weight: 800;
    color: var(--lv-deep);
    line-height: 1.15;
    animation: lvFadeUp .7s .08s ease both;
  }
  #linh-vuc .lv-title em { font-style: normal; color: var(--lv-teal); }
 
  #linh-vuc .lv-sub {
    margin: 14px auto 0;
    max-width: 500px;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--lv-muted);
    animation: lvFadeUp .7s .16s ease both;
  }
 
  @keyframes lvFadeUp {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: translateY(0); }
  }
 
  /* GRID */
  #linh-vuc .lv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  @media (max-width: 900px) { #linh-vuc .lv-grid { grid-template-columns: repeat(2,1fr); } }
  @media (max-width: 560px) { #linh-vuc .lv-grid { grid-template-columns: 1fr; } }
 
  /* CARD */
  #linh-vuc .treat-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(206,241,242,.85);
    box-shadow: 0 2px 14px rgba(13,43,53,.05);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: lvCard .6s ease both;
    transition: transform .35s cubic-bezier(.22,.61,.36,1), box-shadow .35s ease, border-color .3s;
  }
  #linh-vuc .treat-card:nth-child(1) { animation-delay:.05s }
  #linh-vuc .treat-card:nth-child(2) { animation-delay:.10s }
  #linh-vuc .treat-card:nth-child(3) { animation-delay:.15s }
  #linh-vuc .treat-card:nth-child(4) { animation-delay:.20s }
  #linh-vuc .treat-card:nth-child(5) { animation-delay:.25s }
  #linh-vuc .treat-card:nth-child(6) { animation-delay:.30s }
  #linh-vuc .treat-card:nth-child(7) { animation-delay:.35s }
  #linh-vuc .treat-card:nth-child(8) { animation-delay:.40s }
  @keyframes lvCard {
    from { opacity:0; transform:translateY(28px); }
    to   { opacity:1; transform:translateY(0); }
  }
  #linh-vuc .treat-card:hover {
    transform: translateY(-7px) scale(1.015);
    box-shadow: 0 18px 44px rgba(5,133,142,.14), 0 2px 10px rgba(13,43,53,.07);
    border-color: rgba(7,163,173,.35);
  }
 
  /* image */
  #linh-vuc .lv-img-wrap {
    position: relative;
    width: 100%;
    overflow: hidden;
    flex-shrink: 0;
    background: #0a1a22;
  }
  #linh-vuc .treat-img {
    width: 100%;
    height: 250px;
    object-fit: fill;
    display: block;
    transition: transform .55s cubic-bezier(.22,.61,.36,1);
  }
  #linh-vuc .treat-card:hover .treat-img { transform: scale(1.05); }
 
  #linh-vuc .lv-img-wrap::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(155deg, rgba(5,133,142,.45) 0%, rgba(13,43,53,.32) 100%);
    opacity: 0;
    transition: opacity .3s;
  }
  #linh-vuc .treat-card:hover .lv-img-wrap::after { opacity: 1; }
 
  #linh-vuc .lv-icon {
    position: absolute;
    top: 13px; left: 13px; z-index: 2;
    width: 40px; height: 40px;
    border-radius: 12px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center;
    font-size: 19px;
    box-shadow: 0 2px 10px rgba(0,0,0,.10);
    transition: transform .3s ease;
  }
  #linh-vuc .treat-card:hover .lv-icon { transform: scale(1.12) rotate(-5deg); }
 
  #linh-vuc .lv-arrow {
    position: absolute;
    bottom: 13px; right: 13px; z-index: 2;
    width: 34px; height: 34px;
    border-radius: 50%;
    background: var(--lv-teal);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transform: scale(.7) translateX(8px);
    transition: opacity .3s, transform .3s;
  }
  #linh-vuc .treat-card:hover .lv-arrow { opacity:1; transform:scale(1) translateX(0); }
  #linh-vuc .lv-arrow svg {
    width:15px; height:15px;
    fill:none; stroke:#fff;
    stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round;
  }
 
  /* card body */
  #linh-vuc .lv-body {
    padding: 17px 19px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  #linh-vuc .lv-name {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 15.5px;
    font-weight: 700;
    color: var(--lv-deep);
    transition: color .25s;
  }
  #linh-vuc .treat-card:hover .lv-name { color: var(--lv-teal); }
 
  /* ── MÔ TẢ NGẮN ── */
  #linh-vuc .lv-desc {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--lv-muted);
    border-left: 2px solid var(--lv-mint);
    padding-left: 10px;
    margin: 2px 0 4px;
    transition: border-color .25s, color .25s;
  }
  #linh-vuc .treat-card:hover .lv-desc {
    border-color: var(--lv-teal);
    color: rgba(19,53,65,.75);
  }
 
  #linh-vuc .lv-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
  }
  #linh-vuc .lv-tag {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 11.5px;
    font-weight: 500;
    color: var(--lv-muted);
    background: #F0FAFB;
    border: 1px solid rgba(7,163,173,.15);
    border-radius: 100px;
    padding: 3px 10px;
    transition: background .25s, color .25s;
  }
  #linh-vuc .treat-card:hover .lv-tag {
    background: rgba(7,163,173,.09);
    color: var(--lv-teal);
  }
 
  /* CTA CARD */
  #linh-vuc .lv-cta {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(135deg, #0D2B35 0%, #1A4A5C 55%, #07A3AD 130%);
    border: none;
    box-shadow: 0 8px 32px rgba(13,43,53,.22);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 32px;
    min-height: 240px;
    opacity: 0;
    animation: lvCard .6s .48s ease both;
    transition: transform .35s cubic-bezier(.22,.61,.36,1), box-shadow .35s;
  }
  #linh-vuc .lv-cta::before {
    content: '';
    position: absolute; inset: 0;
    background:
      radial-gradient(circle at 78% 18%, rgba(7,163,173,.38) 0%, transparent 52%),
      url("data:image/svg+xml,%3Csvg width='56' height='56' viewBox='0 0 56 56' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='28' cy='28' r='18' fill='%2307A3AD' fill-opacity='.07'/%3E%3C/svg%3E");
    pointer-events: none;
  }
  #linh-vuc .lv-cta:hover {
    transform: translateY(-7px) scale(1.015);
    box-shadow: 0 22px 52px rgba(5,133,142,.30);
  }
  #linh-vuc .lv-cta-label {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 11.5px; font-weight: 600;
    letter-spacing: .1em; text-transform: uppercase;
    color: rgba(206,241,242,.80);
    margin-bottom: 10px; position: relative;
  }
  #linh-vuc .lv-cta-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 26px; font-weight: 800;
    color: #fff; line-height: 1.25;
    position: relative; margin-bottom: 8px;
  }
  #linh-vuc .lv-cta-sub {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 14px; color: rgba(255,255,255,.62);
    line-height: 1.55; position: relative; margin-bottom: 22px;
  }
  #linh-vuc .lv-cta-btn {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--lv-teal); color: #fff;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-weight: 600; font-size: 14px;
    padding: 12px 22px; border-radius: 100px;
    position: relative; width: fit-content;
    transition: background .25s, transform .25s;
  }
  #linh-vuc .lv-cta:hover .lv-cta-btn { background:#07C4CF; transform:translateX(4px); }
  #linh-vuc .lv-cta-btn svg {
    width:15px; height:15px;
    fill:none; stroke:currentColor;
    stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round;
  }