:root {
  --bg: #f6efe1;
  --bg-soft: #fffaf0;
  --text: #1e2a34;
  --muted: #65717b;
  --panel: rgba(255, 255, 255, 0.78);
  --sand: #e5c17d;
  --sand-deep: #c89545;
  --blue: #1f5ead;
  --blue-dark: #183b63;
  --sky: #9bc4df;
  --line: rgba(30, 42, 52, 0.12);
  --radius: 28px;
  --shadow: 0 24px 70px rgba(66, 48, 25, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(31, 94, 173, 0.16), transparent 26rem),
    radial-gradient(circle at 84% 12%, rgba(229, 193, 125, 0.42), transparent 30rem),
    linear-gradient(180deg, var(--bg-soft), var(--bg));
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

body.menu-open {
  overflow: hidden;
}

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

.site-header,
.hero,
.section {
  width: min(100% - clamp(28px, 6vw, 96px), 1160px);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 0;
  backdrop-filter: blur(16px);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  box-shadow: 0 12px 28px rgba(31, 94, 173, 0.28);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 12px 36px rgba(66, 48, 25, 0.08);
}

.site-nav a {
  min-height: 42px;
  padding: 11px 15px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 800;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: #ffffff;
  transform: translateY(-1px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 12px 30px rgba(66, 48, 25, 0.08);
}

.language-switch button {
  min-width: 42px;
  min-height: 34px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 900;
  transition: color 180ms ease, background 180ms ease;
}

.language-switch button:hover,
.language-switch button:focus-visible,
.language-switch button.is-active {
  color: #ffffff;
  background: var(--blue);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
  color: var(--text);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  display: flex;
  align-items: center;
  min-height: auto;
  padding: clamp(34px, 6vw, 68px) 0 clamp(28px, 5vw, 52px);
}

.hero-copy {
  min-width: 0;
  width: min(100%, 760px);
}

.eyebrow {
  width: fit-content;
  margin: 0 0 14px;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--blue-dark);
  background: rgba(31, 94, 173, 0.1);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1,
h2 {
  line-height: 0.98;
  letter-spacing: -0.07em;
}

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(2.7rem, 5.8vw, 5.4rem);
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.9rem, 3.9vw, 3.7rem);
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

.hero-text,
.section p {
  color: var(--muted);
  font-size: clamp(0.98rem, 1.45vw, 1.08rem);
}

.hero-text {
  max-width: 630px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 20px;
  border: 1px solid rgba(31, 94, 173, 0.22);
  border-radius: 999px;
  font-weight: 900;
  text-align: center;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(31, 94, 173, 0.18);
}

.button-primary {
  color: #ffffff;
  background: var(--blue);
}

.button-ghost {
  color: var(--blue-dark);
  background: #ffffff;
}

.section {
  margin-block: clamp(28px, 5vw, 64px);
  scroll-margin-top: 96px;
}

.about {
  padding: clamp(20px, 3.6vw, 36px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 14px 38px rgba(66, 48, 25, 0.08);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(18px, 4vw, 40px);
  align-items: center;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 20px;
}

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

.feature-grid article {
  min-height: 178px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 32px rgba(66, 48, 25, 0.08);
}

.feature-grid span {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  border-radius: 16px;
  color: #ffffff;
  background: var(--blue);
  font-weight: 900;
}

.levels {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(18px, 4vw, 42px);
  align-items: center;
}

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

.level-strip span {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
  color: var(--blue-dark);
  font-weight: 900;
  box-shadow: 0 10px 24px rgba(66, 48, 25, 0.07);
}

.level-strip span:nth-child(even) {
  background: rgba(31, 94, 173, 0.08);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

[data-reveal].is-visible,
html:not(.js-ready) [data-reveal] {
  opacity: 1;
  transform: none;
}

:focus-visible {
  outline: 3px solid rgba(31, 94, 173, 0.55);
  outline-offset: 4px;
}

@media (max-width: 980px) {
  .about-grid,
  .levels {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    max-width: 780px;
  }

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

@media (max-width: 760px) {
  .site-header {
    position: relative;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    width: 100%;
  }

  .language-switch button {
    min-width: 38px;
  }

}

@media (max-width: 560px) {
  .site-header,
  .hero,
  .section {
    width: min(100% - 28px, 1160px);
  }

  h1 {
    font-size: clamp(2.45rem, 12vw, 4rem);
  }

  h2 {
    font-size: clamp(1.8rem, 9.5vw, 3rem);
  }

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

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

  .level-strip {
    grid-template-columns: 1fr;
  }

  .feature-grid article {
    min-height: auto;
  }
}

@media (max-width: 390px) {
  .site-header,
  .hero,
  .section {
    width: min(100% - 24px, 1160px);
  }

  .logo span:last-child {
    max-width: 180px;
  }

  .header-actions {
    gap: 6px;
  }

  .language-switch {
    padding: 3px;
  }

  .language-switch button {
    min-width: 34px;
    min-height: 32px;
    font-size: 0.76rem;
  }

  .eyebrow {
    font-size: 0.68rem;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}