:root{
    --bg:#ffffff;
    --surface:#f5f6f6;
    --surface-alt:#eef0f0;
    --surface-dark:#eceeee;
    --text:#1d252c;
    --text-muted:#5b6770;
    --text-soft:#7c868d;
    --border:#d0d3d4;
    --border-strong:#c2c6c9;

    --teal:#78a22f;
    --teal-deep:#668a28;
    --navy:#00467f;
    --navy-deep:#002e53;
    --blue:#00467f;
    --slate:#7c868d;
    --tan:#a3aaae;
    --tan-deep:#00467f;
    --green:#78a22f;
    --purple:#6d276a;
    --orange:#6d276a;
    --orange-deep:#571f55;

    --on-navy:#f2f3f3;
    --on-navy-muted:#a3aaae;

    --shadow-sm: 0 1px 2px rgba(29,37,44,.06);
    --shadow-md: 0 8px 24px rgba(29,37,44,.10);
    --shadow-lg: 0 24px 56px rgba(29,37,44,.22);

    --font-display: 'Times New Roman', Times, Georgia, serif;
    --font-body: Arial, Helvetica, sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  }

  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --bg:#14191c;
      --surface:#1a2124;
      --surface-alt:#1c2225;
      --surface-dark:#171d20;
      --text:#f2f3f3;
      --text-muted:#c2c6c9;
      --text-soft:#a3aaae;
      --border:#3a4247;
      --border-strong:#4a5257;

      --teal:#9cc752;
      --teal-deep:#b4d97a;
      --navy:#3d7db8;
      --navy-deep:#0b1d2e;
      --blue:#3d7db8;
      --slate:#c2c6c9;
      --tan:#c2c6c9;
      --tan-deep:#3d7db8;
      --green:#9cc752;
      --purple:#c15fbb;
      --orange:#c15fbb;
      --orange-deep:#d687d1;

      --on-navy:#f2f3f3;
      --on-navy-muted:#c2c6c9;

      --shadow-lg: 0 24px 56px rgba(0,0,0,.5);
    }
  }
  :root[data-theme="dark"]{
    --bg:#14191c;
    --surface:#1a2124;
    --surface-alt:#1c2225;
    --surface-dark:#171d20;
    --text:#f2f3f3;
    --text-muted:#c2c6c9;
    --text-soft:#a3aaae;
    --border:#3a4247;
    --border-strong:#4a5257;

    --teal:#9cc752;
    --teal-deep:#b4d97a;
    --navy:#3d7db8;
    --navy-deep:#0b1d2e;
    --blue:#3d7db8;
    --slate:#c2c6c9;
    --tan:#c2c6c9;
    --tan-deep:#3d7db8;
    --green:#9cc752;
    --purple:#c15fbb;
    --orange:#c15fbb;
    --orange-deep:#d687d1;

    --on-navy:#f2f3f3;
    --on-navy-muted:#c2c6c9;

    --shadow-lg: 0 24px 56px rgba(0,0,0,.5);
  }

  /* ---------------------------------------------------------
     RESET-ISH
  --------------------------------------------------------- */
  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; font-size:120%; } /* scales all rem-based headline sizing up to match the larger body/UI text below */
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
  }
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-body);
    font-size:19px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; }
  h1,h2,h3,h4{ font-family:var(--font-display); margin:0; text-wrap:balance; }
  p{ margin:0; }
  ul{ margin:0; }
  .container{
    width:100%;
    max-width:1180px;
    margin-inline:auto;
    padding-inline:24px;
  }
  section{ overflow-x:hidden; }
  :focus-visible{ outline:3px solid var(--orange); outline-offset:3px; border-radius:2px; }

  .eyebrow{
    font-family:var(--font-mono);
    font-weight:700;
    font-size:15.5px;
    letter-spacing:.14em;
    text-transform:uppercase;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-family:var(--font-display);
    font-weight:700;
    font-size:18px;
    letter-spacing:.01em;
    padding:15px 30px;
    border-radius:3px;
    border:2px solid transparent;
    cursor:pointer;
    text-decoration:none;
    transition:transform .15s ease, box-shadow .15s ease, background-color .15s ease, color .15s ease, border-color .15s ease;
    white-space:nowrap;
  }
  .btn:hover{ transform:translateY(-2px); }
  .btn-primary{
    background:var(--orange);
    color:#ffffff;
    font-family:Arial, Helvetica, sans-serif;
    font-weight:700;
    box-shadow: var(--shadow-md);
  }
  .btn-primary:hover{ background:var(--orange-deep); }
  .btn-ghost{
    background:transparent;
    border-color:rgba(238,244,246,.55);
    color:var(--on-navy);
  }
  .btn-ghost:hover{ border-color:#fff; background:rgba(238,244,246,.08); }
  .btn-outline{
    background:transparent;
    border-color:var(--navy);
    color:var(--navy);
  }
  .btn-outline:hover{ background:var(--navy); color:var(--on-navy); }
  .btn-sm{ padding:11px 22px; font-size:16.5px; }

  .badge-pill{
    display:inline-flex; align-items:center; gap:8px;
    border:1px solid rgba(238,244,246,.4);
    border-radius:999px;
    padding:9px 18px 9px 14px;
    font-size:16px; font-weight:600;
    color:var(--on-navy);
  }
  .badge-pill .dot-live{
    width:7px; height:7px; border-radius:50%;
    background:var(--orange-deep);
    box-shadow:0 0 0 3px rgba(208,111,26,.28);
  }

  /* ---------------------------------------------------------
     HEADER
  --------------------------------------------------------- */
  .site-header{
    position:sticky; top:0; z-index:100;
    background:#ffffff;
    border-bottom:1px solid var(--border);
  }
  .site-header .container{
    display:flex; align-items:center; justify-content:space-between;
    padding-block:14px;
    gap:20px;
  }
  .brand{ display:flex; align-items:center; gap:9px; text-decoration:none; }
  .brand-logo{ height:38px; width:auto; display:block; }
  .brand-mark{
    font-family:var(--font-display); font-weight:900; font-size:27px;
    letter-spacing:.01em; color:#fff;
  }
  .brand-sub{
    font-family:var(--font-mono); font-size:12.5px; letter-spacing:.1em;
    color:var(--teal-deep); text-transform:uppercase; font-weight:700;
  }
  .main-nav{ display:flex; align-items:center; gap:30px; }
  .main-nav a{
    font-size:17px; font-weight:600; text-decoration:none; color:var(--text);
    transition:color .15s ease;
  }
  .main-nav a:hover{ color:var(--orange); }
  /* .main-nav a / .mobile-panel a set a dark text color that (by specificity) would
     otherwise override .btn-primary's white text on the Register button — force it back. */
  .nav-cta-group .btn-primary,
  .nav-cta-group .btn-primary:hover,
  .mobile-panel .btn-primary,
  .mobile-panel .btn-primary:hover{ color:#ffffff; }
  .nav-links{ display:flex; gap:28px; }
  .nav-cta-group{ display:flex; align-items:center; gap:14px; }
  .nav-toggle{
    display:none;
    width:40px; height:40px;
    align-items:center; justify-content:center;
    background:transparent; border:1px solid var(--border-strong); border-radius:4px;
    color:var(--text); cursor:pointer;
  }
  .nav-toggle svg{ width:19px; height:19px; }
  .mobile-panel{
    display:none;
    flex-direction:column;
    gap:4px;
    padding:8px 24px 22px;
    background:#ffffff;
    border-bottom:1px solid var(--border);
  }
  .mobile-panel a{
    padding:12px 4px;
    font-size:18px; font-weight:600; text-decoration:none;
    color:var(--text);
    border-bottom:1px solid var(--border);
  }
  .mobile-panel .btn{ margin-top:14px; }
  @media (max-width: 880px){
    .nav-links{ display:none; }
    .nav-toggle{ display:flex; }
    .mobile-panel.is-open{ display:flex; }
  }

  /* ---------------------------------------------------------
     HERO
  --------------------------------------------------------- */
  .hero{
    position:relative;
    background:var(--surface);
    overflow:hidden;
  }
  .hero-bg{
    display:block;
    width:100%;
    height:auto; /* full image always shows at its natural aspect ratio -- never cropped */
  }
  .hero-content{
    position:absolute;
    top:7%;
    left:50%;
    transform:translateX(-50%);
    width:100%;
    max-width:720px;
    padding-inline:24px;
    text-align:center;
    z-index:2;
  }
  .hero-logos{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:36px;
    flex-wrap:wrap;
  }
  .hero-logos img{
    height:60px;
    width:auto;
    object-fit:contain;
  }
  .hero h1{
    margin-top:24px;
    font-size:clamp(1.3rem, 2.6vw, 2.2rem);
    font-weight:800;
    line-height:1.2;
    letter-spacing:-.01em;
    color:var(--text);
  }
  .hero-sub{
    display:inline-block;
    margin-top:14px;
    max-width:62ch;
    font-size:17px;
    color:var(--text);
    padding:14px 24px;
    border-radius:18px;
    background:rgba(255,255,255,.5);
  }
  @media (max-width:700px){
    .hero-content{ top:5%; }
    .hero-logos{ gap:18px; }
    .hero-logos img{ height:34px; }
    .hero h1{ margin-top:14px; }
    .hero-sub{ margin-top:8px; font-size:14px; padding:10px 16px; }
  }
  @media (max-width:480px){
    .hero-logos img{ height:26px; }
    .hero-sub{ font-size:12.5px; }
  }

  /* ---------------------------------------------------------
     WAVE DIVIDERS
  --------------------------------------------------------- */
  .wave{ line-height:0; }
  .wave svg{ width:100%; height:64px; display:block; }
  @media (max-width:700px){ .wave svg{ height:36px; } }

  /* ---------------------------------------------------------
     SECTION HEADS
  --------------------------------------------------------- */
  .section{ padding-block:50px; }
  .section-head{ max-width:64ch; }
  .section-head.center{ max-width:56ch; margin-inline:auto; text-align:center; }
  .section-head .eyebrow{ color:var(--teal); }
  .section-head h2{
    margin-top:14px;
    font-size:clamp(1.85rem,3.3vw,2.5rem);
    font-weight:800;
    color:var(--text);
    letter-spacing:-.01em;
  }
  .section-head p{
    margin-top:16px;
    font-size:20.5px;
    color:var(--text-muted);
    max-width:60ch;
  }
  .section-head.center p{ margin-inline:auto; }

  /* ---------------------------------------------------------
     EXPLORE THE SUMMITS
  --------------------------------------------------------- */
  .explore-summits{ background:var(--bg); }
  .summit-cards{
    margin-top:52px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:28px;
  }
  @media (max-width:820px){ .summit-cards{ grid-template-columns:1fr; } }
  .summit-card{
    border:1px solid var(--border);
    border-radius:8px;
    overflow:hidden;
    background:var(--surface);
    display:flex; flex-direction:column;
    transition:transform .18s ease, box-shadow .18s ease;
  }
  .summit-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
  .summit-card-top{ height:10px; background:var(--summit-color); }
  .summit-card-body{ padding:34px 32px 36px; display:flex; flex-direction:column; gap:16px; flex:1; }
  .summit-card-logo{ height:48px; width:auto; max-width:220px; object-fit:contain; }
  .summit-card-body h3{ font-size:25.5px; font-weight:700; color:var(--text); }
  .summit-card-body p{ font-size:18px; color:var(--text-muted); flex:1; }
  .summit-card-body .btn{ align-self:flex-start; margin-top:4px; }

  /* ---------------------------------------------------------
     ABOUT
  --------------------------------------------------------- */
  .about{ background:var(--surface); }
  .about-grid{
    margin-top:44px;
    display:grid;
    grid-template-columns:1.1fr .9fr;
    gap:52px;
    align-items:center;
  }
  @media (max-width:880px){ .about-grid{ grid-template-columns:1fr; gap:32px; } }
  .about-copy{ max-width:70ch; }
  .about-copy p{ color:var(--text-muted); font-size:19px; }
  .about-copy p + p{ margin-top:16px; }
  .about-photo{
    border-radius:8px;
    overflow:hidden;
    box-shadow:var(--shadow-md);
    aspect-ratio:8/5;
  }
  .about-photo img{ width:100%; height:100%; object-fit:cover; }
  @media (max-width:880px){ .about-photo{ aspect-ratio:16/10; } }

  /* ---------------------------------------------------------
     ORLANDO
  --------------------------------------------------------- */
  .orlando{ background:var(--bg); }
  .orlando-cards{
    margin-top:52px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:28px;
  }
  @media (max-width:820px){ .orlando-cards{ grid-template-columns:1fr; } }
  .orlando-card{
    border:1px solid var(--border);
    border-radius:8px;
    overflow:hidden;
    background:var(--surface);
  }
  .orlando-card-art{
    aspect-ratio:16/9;
    position:relative;
    overflow:hidden;
    background:var(--surface-alt);
  }
  .orlando-card-art img{ width:100%; height:100%; object-fit:cover; }
  .orlando-card-body{ padding:26px 26px 28px; }
  .orlando-card-body h3{ font-size:21.5px; font-weight:700; color:var(--text); }
  .orlando-card-body p{ margin-top:10px; font-size:17.5px; color:var(--text-muted); }
  .orlando-card-body a{
    margin-top:16px;
    display:inline-flex; align-items:center; gap:6px;
    font-size:16.5px; font-weight:700; color:var(--teal-deep); text-decoration:none;
  }
  .orlando-card-body a:hover{ text-decoration:underline; }

  /* ---------------------------------------------------------
     NEWSLETTER / REGISTRATION
  --------------------------------------------------------- */
  .newsletter{
    position:relative;
    background:linear-gradient(155deg, var(--navy-deep) 0%, var(--navy) 60%, var(--teal-deep) 130%);
    color:var(--on-navy);
    overflow:hidden;
  }
  .newsletter-skyline{
    position:absolute; left:0; right:0; bottom:0;
    height:120px;
    opacity:.16;
    pointer-events:none;
  }
  .newsletter-inner{
    position:relative;
    max-width:640px;
  }
  .newsletter .eyebrow{ color:var(--teal-deep); }
  .newsletter h2{ margin-top:14px; font-size:clamp(1.85rem,3.3vw,2.5rem); font-weight:800; color:#fff; }
  .newsletter p.lead{ margin-top:14px; font-size:20px; color:var(--on-navy-muted); max-width:56ch; }
  .newsletter-cta-row{
    margin-top:34px;
  }

  /* ---------------------------------------------------------
     FAQ
  --------------------------------------------------------- */
  .faq{
    position:relative;
    overflow:hidden;
    background-image:url('https://s2.goeshow.com/naccho/publichealth/2027/images/sitelook/Atlanta,_Panorama_bei_Nacht.jpg');
    background-size:cover;
    background-position:center;
    background-attachment:fixed; /* parallax: image holds still while content scrolls over it */
  }
  @media (max-width:900px){
    .faq{ background-attachment:scroll; }
  }
  .faq-overlay{
    position:absolute;
    inset:0;
    z-index:0;
    /* very light wash so the photo is just a faint texture behind the cards, not a real photo backdrop */
    background:rgba(245,246,246,.94);
  }
  .faq .container{ position:relative; z-index:1; }
  .faq-list{ margin-top:44px; display:flex; flex-direction:column; gap:12px; max-width:840px; }
  .faq-item{
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:6px;
    padding:6px 22px;
  }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    padding:18px 0;
    display:flex; align-items:center; justify-content:space-between; gap:16px;
    font-weight:700; font-size:19px; color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary::after{
    content:'+';
    flex:none;
    width:26px; height:26px;
    border-radius:50%;
    border:1px solid var(--border-strong);
    display:flex; align-items:center; justify-content:center;
    font-size:19.5px; font-weight:400; color:var(--teal-deep);
    transition:transform .18s ease;
  }
  .faq-item[open] summary::after{ content:'\2212'; transform:rotate(180deg); }
  .faq-item p{ padding-bottom:20px; font-size:17.5px; color:var(--text-muted); max-width:72ch; }

  /* ---------------------------------------------------------
     FOOTER
  --------------------------------------------------------- */
  .site-footer{
    background:var(--navy-deep);
    color:var(--on-navy-muted);
    padding-top:64px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr;
    gap:40px;
    padding-bottom:48px;
    border-bottom:1px solid rgba(238,244,246,.12);
  }
  @media (max-width:820px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
  @media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }
  .footer-brand .brand-mark{ font-size:24.5px; }
  .footer-brand p{ margin-top:14px; font-size:17px; max-width:34ch; color:var(--on-navy-muted); }
  .footer-col h5{
    font-family:var(--font-mono); font-size:13px; letter-spacing:.1em; text-transform:uppercase;
    color:var(--teal-deep); font-weight:700; margin-bottom:16px;
  }
  .footer-col ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px; }
  .footer-col a{ text-decoration:none; font-size:17px; color:var(--on-navy-muted); transition:color .15s ease; }
  .footer-col a:hover{ color:#fff; }
  .footer-bottom{
    display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap;
    padding-block:22px;
    font-size:15.5px;
  }
  .footer-legal{ display:flex; gap:18px; flex-wrap:wrap; }
  .footer-legal a{ text-decoration:none; color:var(--on-navy-muted); }
  .footer-legal a:hover{ color:#fff; }
  .footer-social{ display:flex; gap:14px; }
  .footer-social a{
    width:32px; height:32px; border-radius:50%;
    border:1px solid rgba(238,244,246,.25);
    display:flex; align-items:center; justify-content:center;
    transition:background .15s ease, border-color .15s ease;
  }
  .footer-social a:hover{ background:rgba(238,244,246,.1); border-color:#fff; }
  .footer-social svg{ width:15px; height:15px; }