/* css/styles.css */
:root {
  --color-black: #0b0b0b;
  --color-graphite: #4f5257;
  --color-ivory: #f3f0ea;
  --color-stone: #d9d4cc;
  --color-bronze: #8c6a43;
  --color-white: #ffffff;
  --color-border-dark: rgba(243, 240, 234, 0.12);
  --color-border-light: rgba(11, 11, 11, 0.1);
  --color-text-dark: rgba(11, 11, 11, 0.84);
  --color-text-muted: rgba(11, 11, 11, 0.58);
  --color-text-light: rgba(243, 240, 234, 0.84);
  --color-text-light-muted: rgba(243, 240, 234, 0.62);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-dark: none;

  --font-display: "Forum", Georgia, serif;
  --font-body: "Inter", Arial, sans-serif;

  --container: 1240px;
  --container-wide: 1360px;

  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 5rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;

  --header-height: 68px;
  --transition-fast: 180ms ease;
  --transition-base: 320ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: calc(var(--header-height) + 12px);
}

body {
  margin: 0;
  background: var(--color-black);
  color: var(--color-ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-ivory);
  color: var(--color-black);
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  min-height: 100vh;
  background: var(--color-black);
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: clamp(72px, 9vw, 128px) 0;
  overflow: clip;
}

.section--dark {
  background: var(--color-black);
}

.section--light {
  background: var(--color-ivory);
  color: var(--color-black);
}

.section--stone {
  background: var(--color-stone);
  color: var(--color-black);
}

.section-head {
  margin-bottom: clamp(42px, 6vw, 72px);
  max-width: 780px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-size: 0.77rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-bronze);
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: 0.02em;
  font-weight: 400;
}

.section-title--narrow {
  max-width: 720px;
}

.prose {
  display: grid;
  gap: 14px;
  max-width: 720px;
  margin-top: 24px;
}

.prose p {
  margin: 0;
  color: var(--color-text-dark);
  font-size: 1rem;
}

.problem-prose {
  gap: 18px;
  margin-top: 28px;
}

.problem-prose p {
  font-size: 1.18rem;
  line-height: 1.55;
}

.problem-lines span {
  display: block;
}

.problem-prose .problem-start {
  max-width: 560px;
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid rgba(140, 106, 67, 0.4);
  color: var(--color-text-dark);
  font-size: 1.125rem;
  line-height: 1.5;
  font-weight: 500;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button:focus-visible {
  outline: 2px solid var(--color-ivory);
  outline-offset: 3px;
}

.button--primary {
  background: var(--color-bronze);
  color: var(--color-ivory);
  box-shadow: none;
}

.button--primary:hover,
.button--primary:focus-visible {
  background: #755735;
  box-shadow: none;
}

.button--large {
  min-height: 58px;
  padding: 0 28px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-black);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  background: var(--color-black);
  border-color: var(--color-border-dark);
  box-shadow: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header .brand {
  padding-block: 1px;
}

.brand-mark {
  width: auto;
  height: 36px;
}

.site-header .brand-mark {
  transform: none;
}

.site-nav {
  position: fixed;
  inset: var(--header-height) 16px auto 16px;
  display: grid;
  gap: 10px;
  padding: 18px;
  background: var(--color-black);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  max-height: calc(100svh - var(--header-height) - 32px);
  overflow-y: auto;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base);
}

.site-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-link {
  position: relative;
  padding: 10px 0;
  color: var(--color-text-light-muted);
  font-size: 0.98rem;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 6px;
  width: 0;
  height: 1px;
  background: var(--color-bronze);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-active {
  color: var(--color-ivory);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-active::after {
  width: 100%;
}

.nav-link--accent {
  color: var(--color-ivory);
}

.menu-toggle {
  position: relative;
  display: inline-grid;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  background: transparent;
  place-content: center;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-ivory);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.brand:focus-visible,
.menu-toggle:focus-visible,
.faq-question:focus-visible {
  outline: 2px solid var(--color-bronze);
  outline-offset: 4px;
}

.faq-question:focus-visible {
  outline-offset: -4px;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.hero {
  padding-top: calc(var(--space-4xl) + 24px);
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  pointer-events: none;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 9.8vw, 7.6rem);
  line-height: 0.96;
  letter-spacing: 0.02em;
  font-weight: 600;
  max-width: 100%;
}

.hero-title-subtitle {
  display: block;
  margin-top: 0.16em;
  font-size: clamp(2.1rem, 3.4vw, 3.15rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

.hero-subtitle {
  margin: 24px 0 0;
  max-width: 620px;
  font-size: clamp(1.05rem, 2.3vw, 1.35rem);
  color: var(--color-text-light);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  margin-top: 34px;
}

.hero-note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-light-muted);
}

.hero-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: none;
}

.hero-image {
  aspect-ratio: 1;
  object-fit: cover;
}

.section--split .split-grid {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame--light {
  border: 1px solid var(--color-border-light);
  box-shadow: none;
  background: rgba(255, 255, 255, 0.45);
}

.split-media .image-frame img {
  aspect-ratio: 4 / 5;
}

.cta-text {
  margin: 0;
  color: var(--color-text-light);
}

.inside-layout {
  display: grid;
  gap: clamp(42px, 7vw, 88px);
  align-items: center;
}

.product-mockup-slot {
  min-width: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(8px, 2vw, 24px) 0;
}

.product-mockup-slot img {
  width: 100%;
  max-width: 100%;
  max-height: 620px;
  height: auto;
  object-fit: contain;
}

.benefits-list {
  border-top: 1px solid rgba(11, 11, 11, 0.16);
}

.benefit-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(11, 11, 11, 0.16);
}

.benefit-number {
  color: var(--color-bronze);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.benefit-row h3,
.faq-question span:first-child {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
}

.benefit-row p,
.faq-answer p {
  margin: 0;
  color: var(--color-text-dark);
}

.benefit-row p {
  margin-top: 9px;
}

.faq-list {
  max-width: 100%;
  border-top: 1px solid var(--color-border-dark);
}

.faq-item {
  border-bottom: 1px solid var(--color-border-dark);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
  padding: 18px 0;
  border: 0;
  background: transparent;
  color: var(--color-ivory);
  text-align: left;
  cursor: pointer;
}

.faq-question span:first-child {
  color: var(--color-ivory);
}

.faq-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-bronze);
  transform: translate(-50%, -50%);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.faq-icon::before {
  width: 14px;
  height: 1px;
}

.faq-icon::after {
  width: 1px;
  height: 14px;
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.faq-answer > * {
  min-height: 0;
  overflow: hidden;
}

.faq-answer p {
  max-width: 760px;
  padding: 0 52px 0 0;
  color: var(--color-text-light-muted);
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
  padding-bottom: 22px;
}

.cta-box {
  position: relative;
  display: grid;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: none;
}

.cta {
  border-top: 1px solid var(--color-border-dark);
}

.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  margin-top: 0;
}

.site-footer {
  padding: clamp(48px, 7vw, 88px) 0;
  background: var(--color-black);
  border-top: 1px solid var(--color-border-dark);
}

.footer-inner {
  display: block;
}

.footer-primary {
  display: flex;
  align-items: center;
}

.footer-legal {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border-dark);
}

.footer-requisites {
  display: grid;
  gap: 3px;
  margin: 0;
  color: rgba(243, 240, 234, 0.62);
  font-size: 0.8rem;
  line-height: 1.5;
}

.footer-requisites span:first-child {
  color: rgba(243, 240, 234, 0.82);
}

.footer-requisites a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-requisites a:hover,
.footer-requisites a:focus-visible {
  color: var(--color-white);
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-legal-links a {
  color: rgba(243, 240, 234, 0.62);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-legal-links a:hover,
.footer-legal-links a:focus-visible {
  color: var(--color-white);
}

@media (min-width: 768px) {
  :root {
    --header-height: 72px;
  }

  .container {
    width: min(calc(100% - 56px), var(--container));
  }

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

  .hero-grid {
    gap: clamp(32px, 5vw, 72px);
  }

  .hero-copy {
    padding-right: 24px;
  }

  .cta-box {
    padding: 42px;
  }

  .footer-legal {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
  }

  .footer-legal-links {
    justify-content: flex-end;
  }

}

@media (min-width: 1024px) {
  .container {
    width: min(calc(100% - 80px), var(--container));
  }

  .menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    inset: auto;
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: none;
    overflow: visible;
  }

  .nav-link {
    padding: 0;
    font-size: 0.92rem;
  }

  .hero.section {
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  .hero-title {
    max-width: 11ch;
  }

  .hero-title-subtitle {
    white-space: normal;
  }

  .hero-card {
    margin-left: auto;
    max-width: 560px;
  }

  .hero-image {
    aspect-ratio: 1;
  }

  .inside-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .split-grid {
    grid-template-columns: minmax(0, 1fr) minmax(460px, 0.92fr);
  }

  .cta-box {
    grid-template-columns: 1.2fr 0.8fr;
  }

}

@media (min-width: 1280px) {
  .section {
    padding: 128px 0;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(460px, 0.88fr);
  }

  .hero-copy {
    padding-right: 48px;
  }

  .cta-box {
    padding: 52px;
  }
}

@media (max-width: 767px) {
  .problem-prose .problem-start {
    max-width: none;
    margin-top: 30px;
    padding-top: 19px;
    font-size: 1.0625rem;
  }

  .section-title {
    max-width: 100%;
  }

  .hero-title {
    max-width: 100%;
  }

  .brand-mark {
    height: 29px;
  }

  .site-header .brand {
    padding-block: 1px;
  }

  .site-header .brand-mark {
    transform: none;
  }

  .cta-box {
    padding: 24px;
  }

  .button {
    width: 100%;
    min-height: 56px;
    padding-block: 10px;
    text-align: center;
    white-space: normal;
  }

  .hero-subtitle br {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

}