:root {
  --gs-ink: #101a2d;
  --gs-muted: #5f6f87;
  --gs-line: #ccd5e2;
  --gs-red: #df3949;
  --gs-paper: #fbfaf7;
  --gs-wash: #f7f3ed;
}

.gs-shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.gs-hero,
.gs-source,
.gs-mechanism,
.gs-faq {
  color: var(--gs-ink);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
}

.gs-hero {
  padding: 76px 0 62px;
  background:
    radial-gradient(circle at 82% 28%, rgba(223, 57, 73, .08), transparent 28%),
    linear-gradient(90deg, rgba(217, 224, 233, .28) 1px, transparent 1px),
    #fffdf9;
  background-size: auto, 56px 100%, auto;
  border-bottom: 1px solid var(--gs-line);
}

.gs-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, .93fr) minmax(520px, 1.07fr);
  gap: clamp(36px, 5vw, 68px);
  align-items: center;
}

.gs-kicker {
  margin: 0 0 18px;
  color: var(--gs-red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  line-height: 1.35;
  text-transform: uppercase;
}

.gs-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(43px, 4.45vw, 64px);
  font-weight: 800;
  letter-spacing: -.055em;
  line-height: .98;
}

.gs-hero__lead {
  max-width: 680px;
  margin: 27px 0 0;
  color: var(--gs-muted);
  font-size: 17px;
  line-height: 1.7;
}

.gs-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.gs-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 22px;
  border: 1px solid var(--gs-ink);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}

.gs-button:hover { transform: translateY(-2px); }
.gs-button:focus-visible { outline: 3px solid rgba(223, 57, 73, .32); outline-offset: 3px; }
.gs-button--primary { background: var(--gs-ink); color: #fff; }
.gs-button--primary:hover { background: var(--gs-red); border-color: var(--gs-red); }
.gs-button--secondary { background: #fff; color: var(--gs-ink); }

.gs-hero__rules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--gs-line);
  border-bottom: 1px solid var(--gs-line);
}

.gs-hero__rules div { padding: 16px 18px 17px 0; }
.gs-hero__rules div + div { padding-left: 18px; border-left: 1px solid var(--gs-line); }
.gs-hero__rules dt { color: var(--gs-red); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.gs-hero__rules dd { margin: 6px 0 0; font-size: 13px; font-weight: 700; line-height: 1.45; }

.gs-hero__visual,
.gs-signature { margin: 0; }
.gs-hero__visual picture,
.gs-signature picture { display: block; }
.gs-hero__visual img,
.gs-signature img { display: block; width: 100%; height: auto; }
.gs-hero__visual figcaption,
.gs-signature figcaption {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 14px;
  color: var(--gs-muted);
  font-size: 11px;
  line-height: 1.5;
}

.gs-source { padding: 48px 0; background: var(--gs-paper); border-bottom: 1px solid var(--gs-line); }
.gs-source__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(34px, 7vw, 104px); align-items: start; }
.gs-source h2 { max-width: 560px; margin: 0; font-size: clamp(29px, 3.1vw, 45px); line-height: 1.08; letter-spacing: -.045em; }
.gs-source__note { border-left: 2px solid var(--gs-red); padding-left: 25px; }
.gs-source__note p { margin: 0; color: var(--gs-muted); font-size: 15px; line-height: 1.7; }
.gs-source__note a { display: inline-block; margin-top: 18px; color: var(--gs-ink); font-size: 13px; font-weight: 800; text-decoration: none; border-bottom: 1px solid var(--gs-ink); }

.gs-mechanism { padding: 68px 0 72px; background: #fff; scroll-margin-top: 108px; }
.gs-section-head { display: grid; grid-template-columns: minmax(0, .9fr) minmax(320px, .55fr); gap: 28px 70px; align-items: end; margin-bottom: 34px; }
.gs-section-head .gs-kicker { grid-column: 1 / -1; margin-bottom: -8px; }
.gs-section-head h2 { margin: 0; max-width: 800px; font-size: clamp(36px, 4vw, 58px); letter-spacing: -.055em; line-height: 1.02; }
.gs-section-head > p:last-child { margin: 0; color: var(--gs-muted); font-size: 15px; line-height: 1.7; }
.gs-signature { padding: 18px; background: var(--gs-wash); border: 1px solid var(--gs-line); border-radius: 22px; box-shadow: 0 22px 48px rgba(16, 26, 45, .08); }
.gs-outcomes { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 34px; border-top: 1px solid var(--gs-line); border-bottom: 1px solid var(--gs-line); }
.gs-outcomes article { min-width: 0; padding: 25px 28px 27px; }
.gs-outcomes article + article { border-left: 1px solid var(--gs-line); }
.gs-outcomes span { color: var(--gs-red); font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.gs-outcomes h3 { margin: 12px 0 8px; font-size: 17px; line-height: 1.3; }
.gs-outcomes p { margin: 0; color: var(--gs-muted); font-size: 13px; line-height: 1.6; }

.gs-faq { padding: 76px 0 84px; background: var(--gs-paper); border-top: 1px solid var(--gs-line); }
.gs-faq__grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(44px, 8vw, 120px); }
.gs-faq__intro { position: sticky; top: 118px; align-self: start; }
.gs-faq h2 { margin: 0; font-size: clamp(33px, 3.3vw, 48px); line-height: 1.05; letter-spacing: -.05em; }
.gs-faq__intro > p:last-child { margin: 20px 0 0; color: var(--gs-muted); font-size: 14px; line-height: 1.7; }
.gs-faq__items details { border-top: 1px solid var(--gs-line); }
.gs-faq__items details:last-child { border-bottom: 1px solid var(--gs-line); }
.gs-faq__items summary { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 18px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 800; }
.gs-faq__items summary::-webkit-details-marker { display: none; }
.gs-faq__items summary b { color: var(--gs-red); font-size: 24px; font-weight: 500; transition: transform .18s ease; }
.gs-faq__items details[open] summary b { transform: rotate(45deg); }
.gs-faq__items details p { margin: -4px 36px 22px 0; color: var(--gs-muted); font-size: 14px; line-height: 1.7; }
.gs-faq__items summary:focus-visible { outline: 3px solid rgba(223, 57, 73, .3); outline-offset: 5px; }

@media (max-width: 1023px) {
  .gs-hero { padding-top: 72px; }
  .gs-hero__grid { grid-template-columns: 1fr; }
  .gs-hero__copy { max-width: 760px; }
  .gs-hero__visual { max-width: 760px; margin-inline: auto; }
  .gs-section-head { grid-template-columns: 1fr; }
  .gs-section-head .gs-kicker { margin-bottom: 0; }
}

@media (max-width: 767px) {
  .gs-shell { width: min(100% - 30px, 560px); }
  .gs-hero { padding: 96px 0 40px; background-size: auto, 38px 100%, auto; }
  .gs-hero__grid { gap: 34px; }
  .gs-hero h1 { font-size: clamp(37px, 11.4vw, 49px); }
  .gs-hero__lead { font-size: 15px; line-height: 1.62; }
  .gs-actions { display: grid; }
  .gs-button { width: 100%; text-align: center; }
  .gs-hero__rules { grid-template-columns: 1fr; }
  .gs-hero__rules div { padding: 14px 0; }
  .gs-hero__rules div + div { padding-left: 0; border-top: 1px solid var(--gs-line); border-left: 0; }
  .gs-hero__visual figcaption,
  .gs-signature figcaption { display: block; }
  .gs-source { padding: 42px 0; }
  .gs-source__grid { grid-template-columns: 1fr; gap: 26px; }
  .gs-source h2 { font-size: 31px; }
  .gs-mechanism { padding: 50px 0 54px; scroll-margin-top: 84px; }
  .gs-section-head { margin-bottom: 26px; }
  .gs-section-head h2 { font-size: 37px; }
  .gs-signature { padding: 10px; border-radius: 18px; }
  .gs-outcomes { grid-template-columns: 1fr; }
  .gs-outcomes article { padding: 20px 5px; }
  .gs-outcomes article + article { border-top: 1px solid var(--gs-line); border-left: 0; }
  .gs-faq { padding: 54px 0 60px; }
  .gs-faq__grid { grid-template-columns: 1fr; gap: 28px; }
  .gs-faq__intro { position: static; }
  .gs-faq h2 { font-size: 35px; }
}

@media (prefers-reduced-motion: reduce) {
  .gs-button { transition: none; }
}