:root {
  --color-white: #ffffff;
  --color-black: #050505;
  --color-ink: #070b3f;
  --color-ink-soft: #4b5563;
  --color-muted: #73777f;
  --color-line: #e6e8ee;
  --color-line-strong: #cfd5e4;
  --color-surface: #ffffff;
  --color-surface-muted: #f8faff;
  --color-accent: #0a20f5;
  --color-accent-strong: #0012d6;
  --color-accent-soft: #eef2ff;
  --color-focus: #0a20f5;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container: 1056px;
  --radius-6: 6px;
  --radius-8: 8px;
  --radius-pill: 999px;
  --button-height: 46px;
  --button-height-mobile: 48px;
  --link-button-height: 38px;
  --brand-link-height: 36px;
  --toc-link-height: 44px;
  --shadow-menu: 0 14px 36px rgba(7, 11, 63, 0.12);
  --space-page: clamp(20px, 4vw, 56px);
  --text-label: 11px;
  --text-meta: 12px;
  --text-small: 13px;
  --text-body: 16px;
  --text-body-lg: 20px;
  --text-section: 44px;
  --text-hero: 72px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--color-white);
  color: var(--color-black);
  font-family: var(--font-sans);
  font-size: 16px;
  letter-spacing: 0;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--color-white);
  color: var(--color-black);
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-accent);
}

button {
  font: inherit;
}

.site-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  width: min(var(--container), calc(100% - var(--space-page) * 2));
  margin: 0 auto;
  padding: 22px 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  width: 148px;
  min-height: var(--brand-link-height);
}

.brand-logo {
  display: block;
  width: 148px;
  height: auto;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(14px, 3vw, 32px);
  color: var(--color-ink-soft);
  font-size: 14px;
}

.primary-nav a[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 700;
}

.header-actions {
  display: flex;
  justify-content: flex-end;
}

.language-menu {
  position: relative;
}

.language-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  border: 1px solid transparent;
  border-radius: var(--radius-6);
  background: transparent;
  color: var(--color-ink-soft);
  padding: 0 8px;
  cursor: pointer;
}

.language-trigger:hover,
.language-trigger:focus-visible {
  border-color: var(--color-line);
  color: var(--color-ink);
  outline: none;
}

.language-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: none;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 2px;
  width: min(360px, calc(100vw - 28px));
  border: 1px solid var(--color-line);
  border-radius: var(--radius-8);
  background: var(--color-white);
  padding: 8px;
  box-shadow: var(--shadow-menu);
}

.language-menu.is-open .language-popover {
  display: grid;
}

.language-popover a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-radius: var(--radius-6);
  padding: 9px 10px;
}

.language-popover a:hover,
.language-popover a[aria-current="true"] {
  background: var(--color-surface);
  color: var(--color-ink);
}

.language-popover small {
  color: var(--color-muted);
  font-size: 11px;
}

main {
  flex: 1;
}

.hero-section,
.why-section,
.install-section,
.plain-page,
.legal-page {
  width: min(var(--container), calc(100% - var(--space-page) * 2));
  margin: 0 auto;
}

.hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: clamp(72px, 11vw, 148px) 0 clamp(34px, 6vw, 76px);
  text-align: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--color-accent);
  font-size: var(--text-label);
  font-weight: 820;
  line-height: 1.2;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  margin: 0;
  color: var(--color-black);
  font-size: var(--text-hero);
  font-weight: 820;
  line-height: 0.98;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

.hero-copy {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--color-ink-soft);
  font-size: var(--text-body-lg);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--button-height);
  border-radius: var(--radius-8);
  padding: 0 18px;
  font-size: 14px;
  font-weight: 760;
  text-align: center;
  white-space: normal;
}

.button.primary {
  background: var(--color-black);
  color: var(--color-white);
}

.button.primary:hover {
  background: var(--color-accent-strong);
  color: var(--color-white);
}

.button.secondary {
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink);
}

.trust-line {
  margin: 22px 0 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.5;
}

.product-strip {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 0;
  width: min(760px, calc(100% - var(--space-page) * 2));
  margin: 0 auto clamp(70px, 9vw, 116px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-8);
  overflow: hidden;
  background: var(--color-white);
}

.mail-column,
.mentor-column {
  min-height: 190px;
  padding: 22px;
}

.mail-column {
  border-right: 1px solid var(--color-line);
}

.mentor-column {
  background: var(--color-surface-muted);
}

.mini-label {
  margin-bottom: 24px;
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.mail-line {
  height: 10px;
  width: 88%;
  margin-top: 14px;
  border-radius: var(--radius-pill);
  background: var(--color-line);
}

.mail-line.strong {
  width: 72%;
  background: var(--color-line-strong);
}

.mail-line.short {
  width: 44%;
}

.mentor-line {
  display: flex;
  align-items: center;
  min-height: 32px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
}

.mentor-line:last-child {
  border-bottom: 0;
}

.why-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(32px, 7vw, 96px);
  padding: 0 0 clamp(72px, 10vw, 132px);
}

.why-section h2,
.install-section h2,
.plain-page h1,
.legal-page h1 {
  margin: 0;
  color: var(--color-black);
  font-size: var(--text-section);
  font-weight: 820;
  line-height: 1.05;
  letter-spacing: 0;
}

.why-section ul {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.why-section li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  border-bottom: 1px solid var(--color-line);
  padding: 20px 0;
  color: var(--color-ink);
  font-size: 22px;
  font-weight: 720;
  line-height: 1.25;
}

.why-section li span {
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 780;
}

.why-section p {
  grid-column: 2;
  margin: 20px 0 0;
  color: var(--color-ink-soft);
  font-size: 17px;
  line-height: 1.65;
}

.install-section {
  border-top: 1px solid var(--color-line);
  padding: clamp(42px, 7vw, 88px) 0;
}

.install-section p,
.plain-page p,
.legal-page p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--color-ink-soft);
  font-size: var(--text-body);
  line-height: 1.7;
}

.text-link {
  display: inline-flex;
  margin-top: 24px;
  color: var(--color-accent);
  font-weight: 760;
}

.plain-page,
.legal-page {
  padding: clamp(74px, 12vw, 148px) 0;
}

.legal-page {
  max-width: 820px;
}

.legal-meta {
  max-width: 760px;
}

.legal-toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 34px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-8);
  background: var(--color-white);
  overflow: hidden;
}

.legal-toc a {
  min-height: var(--toc-link-height);
  border-bottom: 1px solid var(--color-line);
  padding: 13px 16px;
  color: var(--color-ink-soft);
  font-size: 14px;
  font-weight: 720;
  line-height: 1.3;
}

.legal-toc a:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.legal-toc a:nth-child(odd) {
  border-right: 1px solid var(--color-line);
}

.legal-toc a:hover {
  background: var(--color-white);
  color: var(--color-accent);
}

.legal-page section {
  border-top: 1px solid var(--color-line);
  padding: 30px 0 0;
  margin-top: 30px;
}

.legal-page h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

.legal-list {
  display: grid;
  gap: 10px;
  max-width: 760px;
  margin: 18px 0 0;
  padding-left: 22px;
  color: var(--color-ink-soft);
  font-size: var(--text-body);
  line-height: 1.65;
}

.legal-list li::marker {
  color: var(--color-accent);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.legal-links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--link-button-height);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-6);
  padding: 0 12px;
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 760;
}

.legal-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.legal-note {
  border-left: 3px solid var(--color-accent);
  padding-left: 14px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--container), calc(100% - var(--space-page) * 2));
  margin: 0 auto;
  border-top: 1px solid var(--color-line);
  padding: 24px 0 34px;
  color: var(--color-muted);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  align-items: center;
  gap: 18px;
  white-space: nowrap;
}

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

[dir="rtl"] .site-header,
[dir="rtl"] .why-section,
[dir="rtl"] .site-footer {
  direction: rtl;
}

[dir="rtl"] .language-popover {
  left: 0;
  right: auto;
}

@media (max-width: 780px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .primary-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .product-strip,
  .why-section {
    grid-template-columns: 1fr;
  }

  .mail-column {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .why-section p {
    grid-column: auto;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .legal-toc {
    grid-template-columns: 1fr;
  }

  .legal-toc a,
  .legal-toc a:nth-child(odd) {
    border-right: 0;
  }

  .legal-toc a:nth-last-child(2) {
    border-bottom: 1px solid var(--color-line);
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 16px;
    grid-template-columns: 1fr;
  }

  .header-actions {
    justify-content: flex-start;
  }

  h1 {
    max-width: 330px;
    font-size: 38px;
    line-height: 1.08;
  }

  .hero-section {
    align-items: flex-start;
    text-align: left;
  }

  .hero-copy,
  .trust-line {
    max-width: 330px;
  }

  .why-section h2,
  .install-section h2,
  .plain-page h1,
  .legal-page h1 {
    max-width: 330px;
    font-size: 34px;
    line-height: 1.12;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .button {
    width: 100%;
    min-height: var(--button-height-mobile);
  }

  .language-popover {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .why-section li {
    grid-template-columns: 38px 1fr;
  }
}