@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url("../assets/fonts/archivo-latin-400-700.woff2") format("woff2");
}

@font-face {
  font-family: "Barlow Condensed";
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url("../assets/fonts/barlow-condensed-latin-600.woff2") format("woff2");
}

:root {
  --night: #031015;
  --raised: #071a22;
  --panel: #0c252d;
  --ink: #eef4f2;
  --mist: #dfe8e7;
  --muted: #a8b7b8;
  --accent: #ffde59;
  --accent-ink: #102027;
  --line: rgba(238, 244, 242, 0.16);
  --line-strong: rgba(238, 244, 242, 0.28);
  --body: "Archivo", Arial, sans-serif;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --radius-card: 16px;
  --radius-control: 10px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--night);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--night);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
}

body,
button,
input {
  font-synthesis: none;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--display);
  line-height: 0.98;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

::selection {
  color: var(--accent-ink);
  background: var(--accent);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  background: rgba(3, 16, 21, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: block;
  width: 132px;
}

.brand img {
  width: 132px;
  height: auto;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.button-primary,
.button-compact {
  color: var(--accent-ink);
  background: var(--accent);
}

.button-primary:hover,
.button-compact:hover {
  background: #ffe779;
}

.button-compact {
  min-height: 42px;
  padding: 10px 18px;
}

.hero {
  min-height: calc(100dvh - var(--header-height));
  display: grid;
  align-items: center;
  padding: 56px 0;
  background:
    linear-gradient(90deg, rgba(3, 16, 21, 0.96), rgba(3, 16, 21, 0.72)),
    radial-gradient(circle at 78% 22%, rgba(255, 222, 89, 0.12), transparent 28%);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(44px, 7vw, 96px);
}

.hero-copy {
  max-width: 610px;
}

.eyebrow,
.authority-label {
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 12ch;
  margin-bottom: 22px;
  font-size: clamp(3.4rem, 7vw, 6.8rem);
  letter-spacing: -0.035em;
}

.hero-lead {
  max-width: 52ch;
  margin-bottom: 30px;
  color: var(--mist);
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.text-link {
  color: var(--mist);
  font-size: 0.95rem;
  font-weight: 700;
  border-bottom: 1px solid var(--line-strong);
}

.text-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-product {
  position: relative;
  max-width: 590px;
  justify-self: end;
  margin: 0;
}

.hero-product::before {
  content: "";
  position: absolute;
  inset: 12% 8% 3%;
  z-index: -1;
  border-radius: 50%;
  background: rgba(255, 222, 89, 0.1);
  filter: blur(55px);
}

.hero-product img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
}

.hero-product figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-product figcaption strong {
  color: var(--accent);
  font-family: var(--display);
  font-size: 1.65rem;
  line-height: 1;
}

.proof-strip {
  background: var(--raised);
  border-block: 1px solid var(--line);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-grid div {
  min-height: 126px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 28px;
  border-right: 1px solid var(--line);
}

.proof-grid div:last-child {
  border-right: 0;
}

.proof-grid strong {
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.65rem;
  line-height: 1;
}

.proof-grid span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.section {
  padding: clamp(84px, 10vw, 132px) 0;
  border-bottom: 1px solid var(--line);
}

.section h2,
.final-cta h2 {
  margin-bottom: 22px;
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  letter-spacing: -0.025em;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 58px;
}

.section-heading p,
.problem-layout > div:first-child p,
.syllabus-intro p,
.authority-layout > div:last-child > p,
.guarantee-layout > div:last-child p {
  max-width: 64ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.problem-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  gap: clamp(48px, 8vw, 110px);
}

.decision-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 40px;
}

.decision-list article {
  min-height: 168px;
  padding: 22px 0;
  border-top: 1px solid var(--line-strong);
}

.decision-list span {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-weight: 800;
}

.decision-list p {
  margin-bottom: 0;
  color: var(--mist);
}

.receives {
  background: var(--raised);
}

.material-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 28px;
}

.material {
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--panel);
}

.material-main {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 34px;
  padding: 42px;
}

.material-main img {
  width: min(100%, 280px);
  aspect-ratio: 993 / 1404;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 22px 45px rgba(1, 10, 14, 0.38);
}

.material-checklist {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 38px 38px 0;
}

.material-checklist img {
  width: min(76%, 270px);
  aspect-ratio: 993 / 1404;
  object-fit: contain;
  align-self: center;
  margin-top: 22px;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 18px 42px rgba(1, 10, 14, 0.32);
}

.material span {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.material h3 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 3vw, 3rem);
}

.material p {
  margin-bottom: 0;
  color: var(--muted);
}

.syllabus-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(52px, 8vw, 112px);
}

.syllabus-intro {
  align-self: start;
}

.syllabus-groups {
  display: grid;
  gap: 40px;
}

.syllabus-groups article {
  padding: 0 0 38px;
  border-bottom: 1px solid var(--line);
}

.syllabus-groups article:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.syllabus-groups h3 {
  margin-bottom: 22px;
  font-size: 1.85rem;
}

.syllabus-groups ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.syllabus-groups li {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.authority {
  background: var(--panel);
}

.authority-layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: start;
  gap: clamp(40px, 7vw, 90px);
}

.authority-mark {
  display: grid;
  width: 180px;
  aspect-ratio: 1;
  place-items: center;
  color: var(--accent);
  border: 1px solid rgba(255, 222, 89, 0.45);
  border-radius: var(--radius-card);
  font-family: var(--display);
  font-size: 4rem;
  font-weight: 700;
  background: var(--raised);
}

.authority-layout h2 {
  max-width: 19ch;
}

.authority-layout > div:last-child > p {
  margin-bottom: 16px;
}

.audience h2 {
  max-width: 14ch;
  margin-bottom: 48px;
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 40px;
}

.audience-grid p {
  min-height: 88px;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 18px 0;
  color: var(--mist);
  border-top: 1px solid var(--line-strong);
  font-weight: 700;
}

.guarantee {
  background: var(--raised);
}

.guarantee-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  align-items: center;
  gap: clamp(54px, 10vw, 130px);
}

.guarantee-seal {
  display: flex;
  width: 220px;
  aspect-ratio: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  text-align: center;
}

.guarantee-seal strong {
  color: var(--accent);
  font-family: var(--display);
  font-size: 6.5rem;
  line-height: 0.78;
}

.guarantee-seal span {
  max-width: 8ch;
  margin-top: 20px;
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.guarantee-layout > div:last-child {
  max-width: 680px;
}

.guarantee-layout .button {
  margin-top: 12px;
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(52px, 8vw, 110px);
}

.faq-layout h2 {
  align-self: start;
}

details {
  padding: 24px 0;
  border-top: 1px solid var(--line-strong);
}

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

summary {
  position: relative;
  padding-right: 42px;
  cursor: pointer;
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.2;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  position: absolute;
  top: 0;
  right: 4px;
  color: var(--accent);
  font-family: var(--body);
  font-size: 1.5rem;
  font-weight: 400;
}

details[open] summary::after {
  content: "−";
}

details p {
  max-width: 62ch;
  margin: 16px 0 0;
  color: var(--muted);
}

.final-cta {
  padding: 72px 0;
  color: var(--accent-ink);
  background: var(--accent);
}

.final-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.final-cta h2 {
  margin-bottom: 8px;
}

.final-cta p {
  margin-bottom: 0;
  font-weight: 700;
}

.final-cta .button-primary {
  color: var(--ink);
  background: var(--night);
}

.final-cta .button-primary:hover {
  background: var(--panel);
}

footer {
  padding: 42px 0 116px;
  background: var(--night);
}

.footer-layout {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: 32px;
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-layout img {
  width: 140px;
  height: auto;
}

.footer-layout p {
  margin-bottom: 0;
}

.footer-layout a {
  color: var(--mist);
  font-weight: 700;
}

.mobile-buy {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 30;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px max(12px, env(safe-area-inset-bottom));
  background: rgba(3, 16, 21, 0.98);
  border-top: 1px solid var(--line-strong);
}

.mobile-buy span {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.25;
}

.mobile-buy strong {
  display: block;
  color: var(--ink);
  font-size: 0.98rem;
}

.mobile-buy .button {
  min-height: 42px;
  padding: 10px 16px;
}

@media (max-width: 920px) {
  .hero {
    min-height: auto;
  }

  .hero-layout,
  .problem-layout,
  .syllabus-layout,
  .authority-layout,
  .guarantee-layout,
  .faq-layout {
    grid-template-columns: 1fr;
  }

  .hero-product {
    max-width: 620px;
    justify-self: center;
  }

  .proof-grid {
    grid-template-columns: 1fr 1fr;
  }

  .proof-grid div:nth-child(2) {
    border-right: 0;
  }

  .proof-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .material-grid {
    grid-template-columns: 1fr;
  }

  .material-main {
    grid-template-columns: 0.65fr 1.35fr;
  }

  .authority-mark {
    width: 150px;
  }

  .guarantee-layout {
    gap: 48px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    height: 64px;
  }

  .brand,
  .brand img {
    width: 112px;
  }

  .nav .button {
    display: none;
  }

  .hero {
    min-height: 0;
    padding: 44px 0 36px;
  }

  .hero-layout {
    gap: 34px;
  }

  h1 {
    max-width: 10ch;
    margin-bottom: 18px;
    font-size: clamp(3.3rem, 16vw, 4.8rem);
  }

  .hero-lead {
    margin-bottom: 24px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .proof-grid {
    grid-template-columns: 1fr;
  }

  .proof-grid div {
    min-height: 96px;
    padding: 18px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-grid div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 72px 0;
  }

  .section h2,
  .final-cta h2 {
    font-size: clamp(2.55rem, 12vw, 3.65rem);
  }

  .decision-list,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .decision-list article {
    min-height: 0;
  }

  .material {
    min-height: 0;
  }

  .material-main {
    grid-template-columns: 1fr;
    padding: 28px;
  }

  .material-main img {
    width: min(72%, 250px);
  }

  .material-checklist {
    padding: 28px 28px 0;
  }

  .syllabus-groups ul {
    grid-template-columns: 1fr;
  }

  .authority-layout {
    gap: 32px;
  }

  .authority-mark {
    width: 118px;
    font-size: 3rem;
  }

  .guarantee-seal {
    width: 180px;
  }

  .guarantee-seal strong {
    font-size: 5.4rem;
  }

  .final-layout {
    align-items: stretch;
    flex-direction: column;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .mobile-buy {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}