:root{--navy:#1A365D;--navy2:#0b4f6c;--gold:#F6E05E;--gold-soft:#FEFCBF;--gold-dark:#B7791F;--teal:#1b9aaa;--ink:#1a2332;--muted:#4a5a6a;--bg:#F7FAFC;--line:#d0dde6}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI","Helvetica Neue",Arial,sans-serif;font-size:20px;line-height:1.6;color:var(--ink);background:#fff}
img{max-width:100%;display:block}
a{color:var(--navy2)}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em}
h2{font-size:2.1rem;color:var(--navy)}
h3{font-size:1.3rem;color:var(--navy)}
.btn{display:inline-block;background:var(--gold);color:var(--navy);font-weight:700;font-size:1.15rem;padding:18px 34px;border-radius:12px;text-decoration:none;border:none;cursor:pointer;box-shadow:0 4px 0 #c9a227}
.btn:hover,.btn:focus{background:#FAF089}
.btn:focus-visible,input:focus-visible{outline:4px solid var(--teal);outline-offset:3px}
/* nav */
.topbar{background:var(--navy);color:#fff}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:16px;padding-bottom:16px;gap:16px}
.logo{font-size:1.7rem;font-weight:800;color:#fff;text-decoration:none;letter-spacing:-.5px}
.logo span{color:var(--gold)}
.topbar nav a{color:#BEE3F8;text-decoration:none;margin-left:24px;font-size:1.05rem}
.topbar nav a:hover{color:#fff}
/* hero */
.hero{color:#fff;padding:96px 0 112px;min-height:640px;display:flex;align-items:center;
  background-color:var(--navy);
  background-image:linear-gradient(90deg,rgba(18,40,72,.94) 0%,rgba(18,40,72,.86) 32%,rgba(18,40,72,.55) 55%,rgba(18,40,72,.12) 78%,rgba(18,40,72,0) 100%),url("hero-lake-dock.jpg");
  background-size:cover;background-position:center,82% 55%;background-repeat:no-repeat}
.hero .wrap{width:100%}
.hero .wrap>div{max-width:620px}
.hero h1,.hero p.lead,.hero .eyebrow{text-shadow:0 2px 12px rgba(10,25,45,.55)}
.eyebrow{color:var(--gold-soft);font-weight:700;text-transform:uppercase;letter-spacing:1.5px;font-size:.95rem;margin:0 0 12px}
.hero h1{font-size:3.2rem;color:#fff}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p.lead{font-size:1.35rem;color:#E2EDF5;margin:0 0 32px;max-width:36ch}
.hero .note{font-size:1rem;color:#BEE3F8;margin-top:16px}
/* sections */
section{padding:80px 0}
.section-intro{font-size:1.2rem;color:var(--muted);max-width:52ch;margin:0 0 40px}
.guides{background:var(--bg)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 2px 8px rgba(26,54,93,.06)}
.card .thumb{aspect-ratio:816/560;overflow:hidden;border-bottom:1px solid var(--line);background:#fff}
.card .thumb img{width:100%;height:auto}
.card .body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.card .num{font-size:.85rem;font-weight:700;color:var(--gold-dark);text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}
.card h3{font-size:1.2rem}
.card p{font-size:1.05rem;color:var(--muted);margin:0 0 16px;flex:1}
.card a.more{font-weight:700;font-size:1.05rem;text-decoration:none}
.card a.more:hover{text-decoration:underline}
/* signup */
.signup{color:#fff;background-color:var(--navy);background-image:linear-gradient(rgba(26,54,93,.92),rgba(26,54,93,.92)),url("hero-lake-dock.jpg");background-size:cover;background-position:center,70% 60%}
.signup .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.signup h2{color:#fff}
.signup p{color:#E2EDF5;font-size:1.2rem}
.signup ul{padding-left:0;list-style:none;margin:16px 0 0}
.signup li{padding-left:36px;position:relative;margin-bottom:10px;font-size:1.15rem}
.signup li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:800}
form.box{background:#fff;color:var(--ink);border-radius:16px;padding:32px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
form.box label{display:block;font-weight:700;font-size:1.1rem;margin:0 0 6px;color:var(--navy)}
form.box input{width:100%;font-size:1.15rem;padding:16px;border:2px solid #b8c9d4;border-radius:10px;margin:0 0 20px;font-family:inherit}
form.box .btn{width:100%}
form.box .form-error{background:#fdecea;color:#8a1c12;border:1px solid #f1b0a8;border-radius:10px;padding:12px 14px;margin:14px 0 0;font-size:1rem}
form.box .btn:disabled{opacity:.7;cursor:wait}
form.box .fine{font-size:.95rem;color:var(--muted);margin:14px 0 0}
.form-msg{display:none;background:var(--gold-soft);border-left:5px solid var(--gold-dark);padding:12px 14px;margin-top:16px;font-size:1rem;color:var(--ink)}
/* about */
.about .wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}
.badge{background:var(--bg);border:2px solid var(--line);border-radius:20px;padding:40px 32px;text-align:center}
.badge .big{font-size:4.5rem;font-weight:800;color:var(--navy);line-height:1}
.badge .big span{color:var(--gold-dark)}
.badge .sub{font-size:1.2rem;color:var(--muted);margin-top:8px}
.facts{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.facts li{background:var(--bg);border-left:5px solid var(--gold-dark);padding:12px 16px;border-radius:6px;font-weight:600;color:var(--navy)}
/* members */
.members{background:linear-gradient(180deg,#FFFFF0,#FEFCBF)}
.tag{display:inline-block;background:var(--navy);color:var(--gold);font-weight:700;font-size:.9rem;letter-spacing:1px;text-transform:uppercase;padding:6px 14px;border-radius:999px;margin-bottom:16px}
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;list-style:none;padding:0;margin:0 0 32px}
.topics li{background:#fff;border:2px solid #ECC94B;border-radius:12px;padding:18px 20px;font-weight:600;color:var(--navy);font-size:1.1rem}
/* footer */
footer{background:var(--navy);color:#BEE3F8;padding:48px 0 40px;font-size:1rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
footer a{color:#fff}
footer .disc{flex-basis:100%;border-top:1px solid rgba(255,255,255,.2);padding-top:20px;font-size:.92rem;color:#A0B4C8}
/* responsive */
@media (max-width:980px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .topics{grid-template-columns:repeat(2,1fr)}
  .signup .wrap,.about .wrap{grid-template-columns:1fr}
}
@media (max-width:600px){
  body{font-size:18px}
  .topbar nav{display:none}
  .hero{padding:44px 0 300px;min-height:0;display:block;
    background-image:linear-gradient(180deg,#122848 0%,#122848 calc(100% - 340px),rgba(18,40,72,.55) calc(100% - 250px),rgba(18,40,72,.08) calc(100% - 120px),rgba(18,40,72,0) 100%),url("hero-lake-dock.jpg");
    background-size:100% 100%,auto 340px;background-position:center,100% 100%}
  .hero h1{font-size:2.3rem}
  h2{font-size:1.75rem}
  section{padding:56px 0}
  .cards,.topics,.facts{grid-template-columns:1fr}
  form.box{padding:24px}
  .btn{display:block;text-align:center}
}

/* thank-you + 404 */
.ty-hero{padding:72px 0 64px;min-height:480px}
.ty-hero h1{font-size:2.8rem}
.dl{display:block;text-align:center;margin-top:auto;font-size:1.15rem;padding:16px 20px}
.card .body p.dlp{flex:0}
.ty-note{background:#FFFFF0;border-left:6px solid var(--gold-dark);border-radius:8px;padding:20px 24px;margin-top:40px;font-size:1.15rem}
.center{text-align:center}
@media (max-width:600px){.ty-hero{padding:44px 0 280px}.ty-hero h1{font-size:2.1rem}}