:root {
  color-scheme: light;
  --ink: #0b1e31;
  --muted: #587085;
  --blue: #0667e8;
  --blue-dark: #0346b8;
  --cyan: #00c8df;
  --aqua: #dffbff;
  --surface: rgba(255, 255, 255, 0.9);
  --line: rgba(11, 30, 49, 0.11);
  --shadow: 0 24px 70px rgba(16, 76, 127, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 280px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 200, 223, 0.17), transparent 25rem),
    radial-gradient(circle at 92% 22%, rgba(6, 103, 232, 0.11), transparent 28rem),
    linear-gradient(180deg, #f5fdff 0, #fff 38rem);
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: var(--blue-dark);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 0.08em;
}

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

button {
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(6, 103, 232, 0.35);
  outline-offset: 4px;
}

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(74rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 850;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  border-radius: 0.8rem;
  color: #fff;
  background: linear-gradient(145deg, var(--blue), var(--cyan));
  box-shadow: 0 8px 24px rgba(6, 103, 232, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.4rem);
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a[aria-current="page"] {
  color: var(--blue-dark);
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  cursor: pointer;
}

.menu-icon,
.menu-icon span {
  display: block;
}

.menu-icon {
  width: 1.25rem;
}

.menu-icon span {
  height: 2px;
  margin: 0.25rem 0;
  border-radius: 999px;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-open .menu-icon span:first-child {
  transform: translateY(6px) rotate(45deg);
}

.menu-open .menu-icon span:nth-child(2) {
  opacity: 0;
}

.menu-open .menu-icon span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

.page-shell {
  width: min(74rem, calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.tool-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, 0.95fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
  min-height: calc(100vh - 4.6rem);
  padding: 3rem 0 5rem;
}

.tool-copy {
  max-width: 38rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1.1rem;
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.9rem;
  height: 2px;
  background: var(--cyan);
  content: "";
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.tool-copy h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.2rem);
}

.tool-copy > p:not(.eyebrow) {
  max-width: 35rem;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.24rem);
}

.tool-card {
  position: relative;
  border: 1px solid rgba(6, 103, 232, 0.12);
  border-radius: 2rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(16px);
}

.tool-card::before {
  position: absolute;
  top: -8rem;
  right: -8rem;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: rgba(0, 200, 223, 0.1);
  content: "";
  pointer-events: none;
}

.sound-controls {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.sound-option {
  display: grid;
  justify-items: center;
  gap: 0.8rem;
}

.sound-button {
  position: relative;
  display: grid;
  width: clamp(7.4rem, 16vw, 9.2rem);
  aspect-ratio: 1;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, #0877f6, #0346b8);
  box-shadow:
    0 18px 36px rgba(6, 103, 232, 0.24),
    inset 0 1px 1px rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease;
}

.sound-button:hover {
  filter: brightness(1.08);
  transform: translateY(-3px);
}

.sound-button::before,
.sound-button::after {
  position: absolute;
  inset: -0.65rem;
  border: 1px solid rgba(6, 103, 232, 0.16);
  border-radius: inherit;
  content: "";
  pointer-events: none;
}

.sound-button::after {
  inset: -1.25rem;
  opacity: 0.6;
}

.sound-button.is-playing::before,
.sound-button.is-playing::after {
  animation: pulse-ring 1.8s ease-out infinite;
}

.sound-button.is-playing::after {
  animation-delay: 0.6s;
}

.sound-icon {
  font-size: 2.25rem;
  line-height: 1;
}

.sound-icon::after {
  content: "▶";
}

.sound-button.is-playing .sound-icon::after {
  content: "■";
  font-size: 1.7rem;
}

.sound-label {
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 800;
}

.status {
  min-height: 3.4rem;
  margin: 1.8rem 0 0;
  color: var(--muted);
}

.status strong {
  color: var(--blue-dark);
}

.progress {
  height: 0.55rem;
  margin-top: 1rem;
  overflow: hidden;
  border-radius: 999px;
  background: #e3eef7;
}

.progress-bar {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transition: width 250ms linear;
}

.quick-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin: -1.5rem 0 5rem;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.quick-steps li {
  min-height: 9rem;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: 1rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.68);
  font-size: 0.92rem;
  counter-increment: step;
}

.quick-steps li::before {
  display: grid;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.75rem;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--ink);
  content: counter(step);
  font-size: 0.8rem;
  font-weight: 800;
}

.content {
  width: min(51rem, 100%);
  margin: 0 auto;
}

.content section {
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

.content h2,
.legal-card h1 {
  margin: 0 0 1.2rem;
  font-size: clamp(2rem, 5vw, 3.1rem);
}

.content h3,
.legal-card h2 {
  margin: 2rem 0 0.7rem;
  font-size: clamp(1.25rem, 3vw, 1.55rem);
}

.content p,
.content li,
.legal-card p,
.legal-card li {
  color: #435e74;
}

.content p,
.legal-card p {
  margin: 0 0 1.15rem;
}

.content ul,
.content ol,
.legal-card ul {
  padding-left: 1.25rem;
}

.content li + li,
.legal-card li + li {
  margin-top: 0.55rem;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.review {
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  padding: 1.2rem;
  background: #fff;
  box-shadow: 0 10px 36px rgba(11, 30, 49, 0.055);
}

.review h3 {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.review p {
  margin-bottom: 0.8rem;
  font-size: 0.94rem;
}

.stars {
  margin: 0 !important;
  color: #f1a900 !important;
  font-size: 0.88rem !important;
  letter-spacing: 0.05em;
}

.legal-shell {
  padding: 4rem 0 6rem;
}

.legal-card {
  width: min(51rem, 100%);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 1.6rem;
  padding: clamp(1.4rem, 5vw, 3.8rem);
  background: #fff;
  box-shadow: var(--shadow);
}

.legal-card h1 {
  margin-bottom: 2.5rem;
}

.legal-card h2:first-of-type {
  margin-top: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 1rem 3rem;
  color: var(--muted);
  text-align: center;
}

.site-footer p {
  margin: 0.35rem 0;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 0.7rem 1.25rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.footer-links a {
  color: var(--muted);
  font-weight: 700;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@keyframes pulse-ring {
  0% { opacity: 0.7; transform: scale(0.9); }
  100% { opacity: 0; transform: scale(1.25); }
}

@media (max-width: 52rem) {
  .tool-stage {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 3.5rem;
  }

  .tool-copy {
    max-width: 43rem;
    text-align: center;
    margin: 0 auto;
  }

  .tool-copy h1,
  .tool-copy > p:not(.eyebrow) {
    max-width: none;
  }

  .quick-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 0;
  }
}

@media (max-width: 46rem) {
  .site-header,
  .page-shell {
    width: min(100% - 1rem, 74rem);
  }

  .site-header.menu-ready .menu-toggle {
    display: grid;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-header.menu-ready .nav-links {
    position: absolute;
    top: calc(100% - 0.25rem);
    right: 0;
    width: min(22rem, 100%);
    border: 1px solid var(--line);
    border-radius: 1rem;
    padding: 0.45rem;
    visibility: hidden;
    opacity: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 18px 50px rgba(11, 30, 49, 0.16);
    pointer-events: none;
    transform: translateY(-0.5rem);
    transition: opacity 160ms ease, transform 160ms ease, visibility 160ms;
  }

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

  .nav-links a {
    border-radius: 0.7rem;
    padding: 0.72rem 0.85rem;
    font-size: 0.92rem;
  }

  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    background: var(--aqua);
  }

  .tool-stage {
    padding: 2rem 0 3.5rem;
  }

  .tool-copy h1 {
    font-size: clamp(2.9rem, 16vw, 4.5rem);
  }

  .tool-card,
  .legal-card {
    border-radius: 1.25rem;
  }

  .sound-controls,
  .quick-steps,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .quick-steps li {
    min-height: 0;
  }

  .sound-option + .sound-option {
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}