@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;700;800&family=Syne:wght@500;700;800&display=swap");

:root {
  --bg: #07131f;
  --bg-soft: #0d2031;
  --surface: rgba(10, 24, 36, 0.72);
  --surface-strong: rgba(14, 31, 47, 0.92);
  --surface-line: rgba(255, 255, 255, 0.08);
  --text: #f4efe4;
  --muted: rgba(244, 239, 228, 0.72);
  --muted-soft: rgba(244, 239, 228, 0.52);
  --sun: #ffd166;
  --coral: #ff7b72;
  --sky: #4dabf7;
  --mint: #73f5c8;
  --shadow: 0 24px 60px rgba(1, 8, 13, 0.42);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 209, 102, 0.18), transparent 30%),
    radial-gradient(circle at 85% 12%, rgba(77, 171, 247, 0.2), transparent 28%),
    linear-gradient(180deg, #08131e 0%, #0a1725 34%, #07131f 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.28), transparent 72%);
}

a {
  color: inherit;
}

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

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 1000;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: var(--text);
  color: #08131e;
  text-decoration: none;
  font-weight: 800;
}

.skip-link:focus {
  left: 12px;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 19, 31, 0.76);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

header.is-scrolled {
  box-shadow: 0 18px 40px rgba(1, 8, 13, 0.35);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 84px;
}

.nav-cluster,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo a {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text);
  text-decoration: none;
}

.logo img {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(1, 8, 13, 0.28);
}

.logo-mark {
  display: flex;
  flex-direction: column;
  gap: 0.04rem;
}

.logo-mark strong {
  font-family: "Syne", sans-serif;
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.logo-mark span {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted-soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 0.95rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.96rem;
  font-weight: 700;
  transition:
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.lang-select {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 42px;
  padding: 0 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-select select {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  outline: none;
}

.caret {
  color: var(--muted-soft);
}

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.mobile-panel {
  display: none;
  padding: 0 0 1.1rem;
}

.mobile-panel[data-open="true"] {
  display: block;
}

.mobile-panel ul {
  display: grid;
  gap: 0.55rem;
  list-style: none;
}

.mobile-panel a {
  display: block;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

main {
  padding-bottom: 92px;
}

.page-hero {
  padding: 76px 0 30px;
}

.page-hero .container {
  position: relative;
  overflow: hidden;
  padding: 2.2rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: calc(var(--radius-lg) + 4px);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(10, 24, 36, 0.72);
  box-shadow: var(--shadow);
}

.page-hero .container::before,
.page-hero .container::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(6px);
}

.page-hero .container::before {
  width: 220px;
  height: 220px;
  top: -120px;
  right: -40px;
  background: radial-gradient(circle, rgba(255, 209, 102, 0.3), transparent 68%);
}

.page-hero .container::after {
  width: 260px;
  height: 260px;
  bottom: -160px;
  left: -60px;
  background: radial-gradient(circle, rgba(77, 171, 247, 0.24), transparent 68%);
}

.page-hero h1 {
  position: relative;
  font-family: "Syne", sans-serif;
  font-size: clamp(2.35rem, 4vw, 4.2rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
  max-width: 10ch;
}

.page-hero p {
  position: relative;
  max-width: 68ch;
  margin-top: 1rem;
  color: var(--muted);
}

.meta-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.3rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 36px;
  padding: 0 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.content {
  padding-top: 18px;
}

.content .container {
  display: grid;
  gap: 1rem;
}

.card {
  padding: 1.45rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(10, 24, 36, 0.68);
  box-shadow: var(--shadow);
}

.card h2 {
  font-family: "Syne", sans-serif;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  margin-bottom: 0.8rem;
}

.card h3 {
  margin: 1rem 0 0.45rem;
  font-size: 1rem;
}

.card p,
.card li {
  color: var(--muted);
}

.card ul {
  padding-left: 1.2rem;
  margin-top: 0.65rem;
}

.card li + li {
  margin-top: 0.4rem;
}

.card a {
  color: var(--sun);
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

.kbd {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-family: ui-monospace, "SFMono-Regular", monospace;
  font-size: 0.9em;
}

details {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

details + details {
  margin-top: 0.8rem;
}

summary {
  cursor: pointer;
  list-style: none;
  font-weight: 800;
}

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

details p {
  margin-top: 0.7rem;
}

footer {
  padding: 0 0 44px;
  color: var(--muted-soft);
}

.footer-shell {
  padding: 1.8rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03)),
    rgba(10, 24, 36, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.2rem;
}

.footer-grid h4 {
  margin-bottom: 0.7rem;
  font-family: "Syne", sans-serif;
  font-size: 1rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li + li {
  margin-top: 0.45rem;
}

.footer-grid a {
  color: var(--muted);
  text-decoration: none;
}

.footer-grid a:hover {
  color: var(--text);
}

.footer-bottom {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
}

@media (max-width: 920px) {
  .nav-links,
  .lang-select {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .page-hero {
    padding-top: 56px;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 22px, 1180px);
  }

  nav {
    min-height: 76px;
  }

  .logo-mark span {
    font-size: 0.68rem;
  }

  .page-hero .container,
  .footer-shell,
  .card {
    padding: 1.2rem;
  }

  .page-hero h1 {
    font-size: 2rem;
  }
}