:root{
  --ink:#0a2c49;
  --ink-2:#0e3960;
  --river:#1478f0;
  --river-dark:#0d5fc4;
  --sky:#eaf3fd;
  --paper:#ffffff;
  --text:#18334d;
  --muted:#52677b;
  --line:#d3e0ee;
  --err:#b3261e;
  --display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --body:"Figtree","Segoe UI",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:var(--body);font-size:1.0625rem;line-height:1.6;color:var(--text);background:var(--paper)}
img{max-width:100%;display:block}
a{color:var(--river-dark)}
:focus-visible{outline:3px solid var(--river);outline-offset:3px;border-radius:4px}
.wrap{width:min(1120px,100% - 40px);margin-inline:auto}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.brand img{height:54px;width:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--ink);text-decoration:none;font-weight:600}
.nav a:hover{color:var(--river-dark)}
.btn{display:inline-block;border:0;cursor:pointer;font:inherit;font-weight:700;color:#fff;background:var(--river);padding:.8rem 1.4rem;border-radius:999px;text-decoration:none;transition:background .15s}
.btn:hover{background:var(--river-dark)}
.nav .btn{color:#fff;padding:.55rem 1.1rem}
.nav .btn:hover{color:#fff}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(100deg,var(--ink) 0%,var(--ink) 38%,var(--ink-2) 100%)}
.hero .wrap{position:relative;z-index:1;padding:clamp(72px,11vw,150px) 0 clamp(140px,19vw,240px)}
.hero h1{font-family:var(--display);font-weight:800;font-size:clamp(2.6rem,6.4vw,5rem);line-height:1.02;letter-spacing:-.02em;margin:0 0 20px;max-width:12ch}
.hero p{font-size:clamp(1.1rem,2vw,1.35rem);margin:0 0 32px;color:#cfe3f7;max-width:34ch}
.hero .btn{font-size:1.1rem;padding:.95rem 1.8rem}
.skyline{position:absolute;right:0;bottom:0;width:min(78%,980px);height:auto;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 38%),linear-gradient(180deg,transparent 0%,#000 42%);
  -webkit-mask-composite:source-in;
  mask-image:linear-gradient(90deg,transparent 0%,#000 38%),linear-gradient(180deg,transparent 0%,#000 42%);
  mask-composite:intersect}

/* sections */
section{padding:clamp(64px,9vw,112px) 0}
h2{font-family:var(--display);font-weight:800;font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.1;letter-spacing:-.015em;color:var(--ink);margin:0 0 20px}
.about{background:var(--paper)}
.about .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,6vw,88px);align-items:start}
.about p{max-width:60ch;margin:0 0 1.1em}
.values{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.values li{padding:20px 0;border-bottom:1px solid var(--line)}
.values strong{display:block;font-family:var(--display);font-size:1.5rem;color:var(--ink);line-height:1.2;margin-bottom:4px}
.values span{color:var(--muted)}

.book{background:var(--sky)}
.book .grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,80px);align-items:start}
.book .intro p{max-width:40ch;margin:0 0 1em}
.book .facts{margin:24px 0 0;padding:0;list-style:none;color:var(--ink);font-weight:600}
.book .facts li{padding:6px 0}
form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:clamp(20px,3.5vw,36px);display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
label{font-weight:700;color:var(--ink);font-size:.97rem}
.hint{font-weight:400;color:var(--muted)}
input,select,textarea{font:inherit;color:var(--text);background:#fff;border:1.5px solid #9fb4c9;border-radius:10px;padding:.7rem .85rem;width:100%}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:3px solid rgba(20,120,240,.35);border-color:var(--river)}
.err{color:var(--err);font-size:.92rem;margin:0}
.err:empty{display:none}
form .btn{grid-column:1/-1;justify-self:start;font-size:1.05rem;padding:.9rem 1.8rem}
.note{grid-column:1/-1;margin:0;color:var(--muted);font-size:.95rem}
.hp{position:absolute;left:-9999px}

footer{background:var(--ink);color:#bcd3e8;padding:40px 0}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 40px;justify-content:space-between;align-items:center}
footer img{height:44px;width:auto;background:#fff;padding:8px 16px;border-radius:10px}
footer a{color:#fff}

/* thanks page */
.thanks{min-height:60vh;display:flex;align-items:center}
.thanks .box{max-width:620px}
.thanks dl{margin:24px 0;border-top:2px solid var(--ink)}
.thanks dl div{display:flex;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.thanks dt{font-weight:700;color:var(--ink);min-width:7.5rem}
.thanks dd{margin:0}

@media (max-width:860px){
  .about .grid,.book .grid{grid-template-columns:1fr}
  .nav a:not(.btn){display:none}
  .skyline{width:120%;opacity:.55}
}
@media (max-width:560px){
  form{grid-template-columns:1fr}
  .brand img{height:46px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}

.full-row{grid-column:1/-1}
#form-err{font-weight:600}
select option:disabled{color:#8a99a8}

.contact p{margin:0 0 4px}
.contact{text-align:right}
@media (max-width:560px){.contact{text-align:left}}