* { box-sizing: border-box; margin: 0; padding: 0; }
    html {
      scroll-behavior: smooth;
      scroll-padding-top: 96px;
    }
    body {
      font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: linear-gradient(180deg, #f8fbff 0%, #ffffff 220px);
      color: #334155;
      line-height: 1.75;
    }
    a { color: #1D89F1; text-decoration: none; }
    a:hover { text-decoration: underline; }
    .header {
      background: rgba(255,255,255,.88);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid #e6effe;
      position: sticky;
      top: 0;
      z-index: 20;
    }
    .header-inner, .container, .footer-inner {
      max-width: 1120px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .header-inner {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #0f172a;
      font-weight: 700;
      font-size: 1.2rem;
    }
    .brand img {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(29,137,241,.18);
    }
    .nav {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .nav a {
      color: #475569;
      font-weight: 600;
      font-size: .95rem;
    }
    .hero {
      padding: 44px 0 28px;
    }
    .breadcrumb {
      font-size: .9rem;
      color: #64748b;
      margin-bottom: 18px;
    }
    .hero-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      background: linear-gradient(135deg, #ffffff 0%, #eff7ff 100%);
      border: 1px solid #dcecff;
      border-radius: 28px;
      padding: 32px;
      box-shadow: 0 18px 50px rgba(29,137,241,.08);
      overflow: hidden;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 14px;
      border-radius: 999px;
      background: #e8f3ff;
      color: #1D89F1;
      font-weight: 700;
      font-size: .85rem;
      margin-bottom: 16px;
    }
    h1, h2, h3 {
      color: #0f172a;
      line-height: 1.2;
    }
    h1 {
      font-size: clamp(2.1rem, 5vw, 3.6rem);
      margin-bottom: 18px;
      max-width: 12ch;
    }
    .lead {
      font-size: 1.1rem;
      color: #475569;
      max-width: 60ch;
      margin-bottom: 20px;
    }
    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 18px 0 22px;
    }
    .chip {
      background: #fff;
      border: 1px solid #dcecff;
      color: #33506c;
      padding: 8px 12px;
      border-radius: 999px;
      font-size: .9rem;
      font-weight: 600;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 8px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      font-weight: 700;
      transition: transform .18s ease, box-shadow .18s ease;
    }
    .btn:hover {
      transform: translateY(-1px);
      text-decoration: none;
    }
    .btn-primary {
      background: linear-gradient(180deg, #1D89F1 0%, #1AAFFB 100%);
      color: white;
      box-shadow: 0 16px 30px rgba(29,137,241,.24);
    }
    .btn-secondary {
      background: white;
      color: #1D89F1;
      border: 1px solid #cfe4ff;
    }
    .hero-visual {
      position: relative;
      min-height: 420px;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: visible;
      isolation: isolate;
      padding: 18px 0;
    }
    .blob {
      position: absolute;
      left: 50%;
      top: 50%;
      width: 420px;
      height: 420px;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      background: radial-gradient(circle, rgba(26,175,251,.18) 0%, rgba(29,137,241,.08) 48%, rgba(29,137,241,0) 74%);
      filter: blur(22px);
      z-index: 1;
      pointer-events: none;
    }
    .hero-shot {
      position: relative;
      z-index: 2;
      width: min(100%, 460px);
      max-height: 520px;
      object-fit: cover;
      border-radius: 28px;
      box-shadow: 0 28px 56px rgba(15,23,42,.16);
    }
    .hero-badge {
      position: absolute;
      right: -6px;
      bottom: 18px;
      z-index: 3;
      background: rgba(255,255,255,.96);
      border: 1px solid #dcecff;
      border-radius: 18px;
      padding: 12px 14px;
      width: 190px;
      box-shadow: 0 16px 32px rgba(15,23,42,.12);
    }
    .hero-badge strong {
      display: block;
      color: #1D89F1;
      font-size: 1.1rem;
      margin-bottom: 4px;
    }
    .layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 28px;
      padding: 20px 0 60px;
    }
    .article, .sidebar-card, .photo-card, .cta-card {
      background: #fff;
      border: 1px solid #e6effe;
      border-radius: 24px;
      box-shadow: 0 10px 30px rgba(15,23,42,.05);
    }
    .article {
      padding: 34px;
    }
    #article,
    #warning-signs,
    #hydration-plan,
    #faq {
      scroll-margin-top: 96px;
    }
    .article h2 {
      font-size: 1.7rem;
      margin: 34px 0 14px;
      padding-bottom: 10px;
      border-bottom: 2px solid #edf5ff;
    }
    .article h3 {
      font-size: 1.18rem;
      margin: 22px 0 10px;
      color: #1D89F1;
    }
    .article p + p { margin-top: 14px; }
    .article ul, .article ol {
      margin: 16px 0 18px 20px;
    }
    .article li + li { margin-top: 8px; }
    .stat-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin: 24px 0 18px;
    }
    .stat {
      background: linear-gradient(180deg, #f8fbff 0%, #eef6ff 100%);
      border: 1px solid #dcebff;
      border-radius: 20px;
      padding: 18px;
    }
    .stat strong {
      display: block;
      font-size: 1.5rem;
      color: #1D89F1;
      margin-bottom: 6px;
    }
    .callout {
      margin: 24px 0;
      border-left: 4px solid #1D89F1;
      background: linear-gradient(135deg, #ebf4ff, #f8fbff);
      border-radius: 0 18px 18px 0;
      padding: 18px 20px;
      color: #27425f;
    }
    .photo-card {
      margin: 26px 0;
      overflow: hidden;
    }
    .photo-card img {
      width: 100%;
      display: block;
      background: #eff6ff;
    }
    .photo-copy {
      padding: 16px 18px 18px;
    }
    .photo-copy strong {
      display: block;
      color: #0f172a;
      margin-bottom: 6px;
    }
    .checklist {
      list-style: none;
      margin-left: 0 !important;
    }
    .checklist li {
      position: relative;
      padding-left: 30px;
    }
    .checklist li::before {
      content: '✓';
      position: absolute;
      left: 0;
      top: 0;
      color: #1D89F1;
      font-weight: 800;
    }
    .faq {
      margin-top: 26px;
    }
    .faq details {
      border: 1px solid #e6effe;
      background: #fbfdff;
      border-radius: 16px;
      padding: 0;
      margin-top: 12px;
      overflow: hidden;
      transition: border-color .28s ease, box-shadow .28s ease, background-color .28s ease;
    }
    .faq details[open] {
      border-color: #cfe4ff;
      box-shadow: 0 12px 28px rgba(29,137,241,.08);
      background: #ffffff;
    }
    .faq summary {
      cursor: pointer;
      font-weight: 700;
      color: #0f172a;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 18px;
    }
    .faq summary::-webkit-details-marker {
      display: none;
    }
    .faq summary::after {
      content: '+';
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      background: #edf5ff;
      color: #1D89F1;
      font-size: 1.1rem;
      font-weight: 700;
      transition: transform .28s ease, background-color .28s ease;
    }
    .faq details[open] summary::after {
      content: '–';
      transform: rotate(180deg);
      background: #dfefff;
    }
    .faq-answer {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows .32s ease, opacity .24s ease;
      opacity: 0;
    }
    .faq details[open] .faq-answer {
      grid-template-rows: 1fr;
      opacity: 1;
    }
    .faq-answer-inner {
      overflow: hidden;
      padding: 0 18px;
    }
    .faq-answer-inner p {
      margin: 0 0 18px;
      transform: translateY(-6px);
      transition: transform .28s ease;
    }
    .faq details[open] .faq-answer-inner p {
      transform: translateY(0);
    }
    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 18px;
      align-self: start;
    }
    .sidebar-card {
      padding: 22px;
      position: static;
    }
    .sidebar-card h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }
    .mini-list {
      list-style: none;
      margin-top: 14px;
    }
    .mini-list li + li { margin-top: 10px; }
    .mini-list a {
      display: block;
      padding: 12px 14px;
      border-radius: 14px;
      background: #f8fbff;
      border: 1px solid #e6effe;
      color: #33506c;
      font-weight: 600;
    }
    .mini-list a:hover {
      border-color: #b9dafd;
      text-decoration: none;
    }
    .cta-card {
      padding: 26px;
      background: linear-gradient(180deg, #1D89F1 0%, #1AAFFB 100%);
      color: white;
    }
    .cta-card h3, .cta-card p { color: white; }
    .cta-card p {
      opacity: .92;
      margin: 10px 0 18px;
    }
    .cta-card .btn-secondary {
      border: 0;
    }
    .footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 34px 0 50px;
    }
    .footer-inner {
      display: flex;
      flex-direction: column;
      gap: 12px;
      text-align: center;
    }
    .footer-nav {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .footer a { color: #dbeafe; }
    @media (max-width: 920px) {
      .hero-card, .layout { grid-template-columns: 1fr; }
      .sidebar-card { position: static; }
      h1 { max-width: none; }
      .hero-visual { min-height: 320px; }
      .hero-shot { width: min(100%, 520px); max-height: 420px; }
      .hero-badge { right: 12px; bottom: 12px; }
    }
    @media (max-width: 680px) {
      .header-inner { padding-top: 10px; padding-bottom: 10px; }
      .nav { display: none; }
      .hero-card, .article { padding: 22px; }
      .hero-card { gap: 22px; }
      .hero-visual {
        min-height: auto;
        display: block;
        padding: 0;
      }
      .blob {
        width: 260px;
        height: 260px;
        left: 50%;
        top: 42%;
      }
      .hero-shot {
        width: 100%;
        max-width: 100%;
        max-height: none;
        display: block;
        border-radius: 22px;
      }
      .hero-badge {
        position: static;
        margin-top: 14px;
        width: 100%;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .meta-row {
        gap: 8px;
      }
      .chip {
        font-size: .85rem;
      }
      .stat-strip { grid-template-columns: 1fr; }
    }