:root {
  color-scheme: light;
  --bg: #f7f9fa;
  --surface: #ffffff;
  --ink: #17212b;
  --muted: #5e6a74;
  --line: #dfe6ea;
  --soft: #eef4f5;
  --accent: #0b6b6f;
  --accent-strong: #064f54;
  --steel: #31566a;
  --warning: #b66a18;
  --radius: 8px;
  --shadow: 0 18px 45px rgba(20, 42, 55, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #063b3e;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(223, 230, 234, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.header-inner,
.section-inner,
.footer-inner {
  width: min(1160px, calc(100vw - 32px));
  margin: 0 auto;
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-size: 15px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  font-weight: 650;
}

.nav a {
  color: #273744;
  text-decoration: none;
}

.nav .quote-link,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 15px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-weight: 750;
  text-decoration: none;

}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: white;
  color: var(--ink);
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  padding: 74px 0 44px;
  background:
    linear-gradient(90deg, rgba(238, 244, 245, 0.9), rgba(247, 249, 250, 0)),
    var(--surface);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 44px;
  align-items: center;
}

.breadcrumb {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--muted);
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.14;
}

h1 {
  margin: 0 0 22px;
  font-size: clamp(38px, 6.3vw, 68px);
  max-width: 860px;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(26px, 3.2vw, 38px);
}

h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.lede {
  max-width: 760px;
  margin: 0 0 26px;
  color: #42515e;
  font-size: 19px;
  line-height: 1.68;
}

.hero-actions,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button.secondary {
  border-color: #b7c6cd;
  background: white;
  color: var(--accent-strong);
}

.proof-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.proof-list li,
.mini-card,
.toc a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
}

.proof-list li {
  padding: 12px 13px;
  color: #314150;
  font-size: 14px;
  font-weight: 650;
}

.hero-visual {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  border: 1px solid #d9e4e8;
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 38%, rgba(255, 255, 255, 1), rgba(230, 239, 243, 0.55) 58%, rgba(247, 249, 250, 0.9)),
    linear-gradient(135deg, #ffffff, #edf4f6);
  overflow: hidden;
}

.hero-visual img {
  width: min(78%, 520px);
  max-height: 330px;
  object-fit: contain;
  filter: drop-shadow(0 24px 22px rgba(29, 54, 68, 0.16));
}

.visual-note {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  padding: 10px 12px;
  border: 1px solid rgba(181, 198, 205, 0.78);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.82);
  color: #3f4e5a;
  font-size: 13px;
}

.section {
  padding: 58px 0;
}

.section.alt {
  background: var(--surface);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 42px;
}

.kicker {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 13px;

  font-weight: 800;
  text-transform: uppercase;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.card p,
.note p {
  margin: 0;
  color: var(--muted);
}

.card img {
  width: 100%;
  height: 128px;
  object-fit: contain;
  margin-bottom: 16px;
  background: var(--soft);
  border-radius: 6px;
}

.plain-list,
.check-list,
.link-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.plain-list li,
.check-list li,
.link-list li {
  position: relative;
  margin: 0 0 11px;
  padding-left: 18px;
}

.plain-list li::before,
.check-list li::before,
.link-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.note {
  padding: 22px;
  border-left: 4px solid var(--accent);
  background: #eef5f6;
}

.what-send {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.mini-card {
  padding: 14px 15px;
  color: #344653;
  font-size: 14px;
  font-weight: 680;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  color: #22313d;
  font-weight: 760;
}

.faq p {
  margin: 10px 0 0;
  color: var(--muted);
}


.form-box {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 5px;
  color: #334451;
  font-size: 13px;
  font-weight: 750;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #cbd7dd;
  border-radius: 6px;
  padding: 10px 11px;
  background: white;
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 118px;
  resize: vertical;
}

.full {
  grid-column: 1 / -1;
}


.site-footer {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  background: #13202a;
  color: #d8e2e6;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: start;
}

.site-footer a {
  color: #e8f6f7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.fine-print {
  margin: 8px 0 0;
  color: #9fb1ba;
  font-size: 13px;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.toc a {
  padding: 8px 12px;
  text-decoration: none;
  font-size: 14px;
}

@media (max-width: 860px) {

  .header-inner {
    min-height: 60px;
  }

  .menu-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 60px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 16px 16px;
    border-bottom: 1px solid var(--line);
    background: white;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 12px 0;
  }

  .nav .quote-link {
    margin-top: 8px;
  }

  .hero {
    padding: 46px 0 34px;
  }

  .hero-grid,
  .split,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 280px;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .what-send {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .header-inner,
  .section-inner,
  .footer-inner {
    width: min(100vw - 24px, 1160px);
  }

  h1 {
    font-size: 38px;
  }

  .lede {
    font-size: 17px;
  }

  .proof-list,
  .grid,
  .what-send,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 42px 0;
  }
}