:root {
  --navy: #09507a;
  --navy-d: #063a59;
  --ink: #111418;
  --slate: #1c252b;
  --slate2: #27343c;
  --sky: #00a3dc;
  --light: #f3f6f8;
  --line: #dbe3e8;
  --txt: #3e525f;
  --white: #fff;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  color: var(--txt);
  line-height: 1.65;
  background: var(--white);
}
h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; margin: 0 0 0.6em; }
p { margin: 0 0 1em; }
a { color: var(--navy); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 22px; }
.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--sky);
  color: var(--white);
  padding: 8px 14px;
  z-index: 100;
}
.skip-link:focus { top: 8px; }
.screen-reader-text,
.nav-toggle .screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.topbar { background: var(--slate); color: #cfd9df; font-size: 0.85rem; }
.topbar .wrap { display: flex; justify-content: flex-end; gap: 20px; padding: 7px 22px; flex-wrap: wrap; }
.topbar a { color: var(--white); text-decoration: none; }
.topbar a:hover, .topbar a:focus { text-decoration: underline; }

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 30;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 22px;
}
.brand img { height: 62px; width: auto; display: block; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  margin: 0 auto;
  position: relative;
}
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle-bar::before { top: -6px; }
.nav-toggle-bar::after { top: 6px; }

.nav .menu { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 6px 22px; flex-wrap: wrap; }
.nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 0;
  display: inline-block;
}
.nav a:hover, .nav a:focus, .nav .current-menu-item > a { color: var(--navy); }
.nav .menu-item-has-children { position: relative; }
.nav .submenu-toggle {
  display: none;
}
.nav .sub-menu {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  position: absolute;
  left: 0;
  top: 100%;
  min-width: 240px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 10px 28px rgba(17, 20, 24, 0.12);
  display: none;
  z-index: 20;
}
.nav .menu-item-has-children:hover > .sub-menu,
.nav .menu-item-has-children:focus-within > .sub-menu,
.nav .menu-item-has-children.is-open > .sub-menu { display: block; }
.nav .sub-menu a { display: block; padding: 8px 16px; font-weight: 500; }

.site-main { min-height: 50vh; }
.entry-content > *:first-child { margin-top: 0; }
.entry-content .wrap { padding-left: 22px; padding-right: 22px; }

.btc-hero {
  background: linear-gradient(125deg, var(--slate) 0%, var(--navy-d) 52%, var(--navy) 100%);
  color: #e6eef3;
  padding: 84px 0 88px;
}
.btc-hero h1 { color: var(--white); font-size: clamp(2rem, 4.6vw, 3.25rem); max-width: 820px; }
.btc-hero p { font-size: 1.15rem; max-width: 660px; }
.btc-hero .eyebrow {
  color: var(--sky);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
  margin-bottom: 12px;
}
.btc-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
}
.btn-primary { background: var(--sky); color: var(--white); }
.btn-primary:hover, .btn-primary:focus { background: #008ec0; color: var(--white); }
.btn-ghost { border-color: #fff; color: #fff; }
.btn-ghost:hover, .btn-ghost:focus { background: rgba(255,255,255,0.08); color: #fff; }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover, .btn-navy:focus { background: var(--navy-d); color: var(--white); }

.btc-strip {
  background: var(--navy);
  color: var(--white);
  padding: 18px 0;
}
.btc-strip .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: center; text-align: center; }
.btc-strip strong { display: block; font-size: 1rem; }
.btc-strip span { font-size: 0.9rem; opacity: 0.88; }

.btc-section { padding: 72px 0; }
.btc-section.alt { background: var(--light); }
.btc-section.dark {
  background: var(--slate);
  color: #d5dee4;
}
.btc-section.dark h2, .btc-section.dark h3 { color: var(--white); }
.center { text-align: center; }
.lead { max-width: 740px; margin-left: auto; margin-right: auto; }
.btc-kicker {
  color: var(--sky);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 8px;
}

.grid2, .grid3, .grid5 { display: grid; gap: 22px; }
.grid2 { grid-template-columns: repeat(2, 1fr); }
.grid3 { grid-template-columns: repeat(3, 1fr); }
.grid5 { grid-template-columns: repeat(5, 1fr); }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px;
  box-shadow: 0 4px 14px rgba(9, 80, 122, 0.05);
}
.card h3 { margin-bottom: 0.4em; }
.card a { font-weight: 700; text-decoration: none; }
.card a:hover, .card a:focus { text-decoration: underline; }
.mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--light);
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: 14px;
}

.price {
  display: flex;
  flex-direction: column;
  border-top: 5px solid var(--navy);
}
.price.featured {
  border-top-color: var(--sky);
  box-shadow: 0 12px 30px rgba(9, 80, 122, 0.14);
}
.price .tag {
  align-self: flex-start;
  background: var(--sky);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.amount { font-size: 2.4rem; font-weight: 800; color: var(--ink); line-height: 1; }
.amount small { font-size: 1rem; font-weight: 500; color: var(--txt); }
.price ul { list-style: none; padding: 0; margin: 16px 0 0; }
.price li { padding: 7px 0; border-bottom: 1px solid var(--line); }
.price li::before { content: ""; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 0; padding: 0; list-style: none; }
.chips li {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  color: var(--ink);
}

.timeline { list-style: none; margin: 0; padding: 0; border-left: 3px solid var(--sky); }
.timeline li { padding: 0 0 26px 22px; position: relative; }
.timeline li::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--sky);
  position: absolute;
  left: -8px;
  top: 6px;
}
.timeline strong { display: block; color: var(--navy); }

blockquote.btc-quote {
  margin: 0;
  padding: 24px 28px;
  background: var(--white);
  border-left: 4px solid var(--sky);
  border-radius: 0 12px 12px 0;
  color: var(--ink);
  font-size: 1.15rem;
}
blockquote.btc-quote cite { display: block; margin-top: 12px; font-size: 0.95rem; color: var(--txt); font-style: normal; }

.note { font-size: 0.92rem; }
.placeholder-note {
  border: 1px dashed var(--line);
  background: #fafcfd;
  padding: 16px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.site-footer {
  background: var(--ink);
  color: #aab7c0;
  padding: 52px 0 20px;
  font-size: 0.92rem;
}
.site-footer a { color: var(--white); text-decoration: none; }
.site-footer a:hover, .site-footer a:focus { text-decoration: underline; }
.site-footer h2 { color: var(--white); font-size: 1rem; }
.fgrid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.copy { border-top: 1px solid #2a3238; margin-top: 30px; padding-top: 16px; text-align: center; }

@media (max-width: 980px) {
  .grid5 { grid-template-columns: 1fr 1fr; }
  .grid3, .fgrid { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav {
    display: none;
    width: 100%;
    padding-bottom: 16px;
  }
  .nav.is-open { display: block; }
  .site-header .wrap { flex-wrap: wrap; }
  .nav .menu { flex-direction: column; align-items: stretch; gap: 0; }
  .nav .menu-item-has-children { display: flex; flex-wrap: wrap; }
  .nav .menu-item-has-children > a { flex: 1; }
  .nav .submenu-toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
    position: relative;
  }
  .nav .submenu-toggle::before {
    content: "";
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    transform: rotate(45deg);
    margin: auto;
  }
  .nav .sub-menu {
    position: static;
    display: none;
    width: 100%;
    box-shadow: none;
    border: 0;
    padding: 0 0 8px 14px;
  }
  .nav .menu-item-has-children.is-open > .sub-menu { display: block; }
}
@media (max-width: 640px) {
  .grid2, .grid5 { grid-template-columns: 1fr; }
  .btc-hero { padding: 56px 0 64px; }
  .btc-section { padding: 52px 0; }
}