:root {
  --ink: #17202a;
  --ink-soft: #4f5d6b;
  --paper: #f8f4ea;
  --paper-2: #fffdf7;
  --accent: #0f766e;
  --accent-2: #f97316;
  --card: #ffffff;
  --line: #d8dedf;
  --success: #1f9d55;
  --danger: #d33f49;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(23, 32, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Outfit", "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fdf7e7 0%, #f4f8f7 55%, #eef5ff 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

.site-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    radial-gradient(circle at 15% 12%, rgba(249, 115, 22, 0.2), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(15, 118, 110, 0.22), transparent 28%),
    radial-gradient(circle at 42% 88%, rgba(12, 74, 110, 0.15), transparent 40%);
}

a {
  color: inherit;
}

.site-header {
  width: min(1120px, 92vw);
  margin: 1.4rem auto 0;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(216, 222, 223, 0.9);
  background: rgba(255, 253, 247, 0.8);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 1rem;
  z-index: 30;
}

.site-header.compact {
  position: relative;
  top: 0;
  border-radius: var(--radius);
}

.brand {
  font-family: "DM Serif Display", serif;
  text-decoration: none;
  font-size: 1.55rem;
  letter-spacing: 0.02em;
}

.top-nav {
  display: flex;
  gap: 1rem;
}

.top-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
}

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

main {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.hero {
  padding: 6.2rem 0 4rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.17em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.8rem;
}

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

.hero h1 {
  font-family: "DM Serif Display", serif;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  max-width: 16ch;
  line-height: 1.04;
  margin-bottom: 1rem;
}

.hero h1 span {
  color: var(--accent-2);
  font-style: italic;
}

.lead {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 62ch;
  line-height: 1.6;
}

.hero-actions {
  margin-top: 1.8rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.72rem 1.12rem;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(23, 32, 42, 0.12);
}

.btn.solid {
  background: linear-gradient(120deg, var(--accent), #0b665f);
  color: #f7fcfb;
}

.btn.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 140px));
  gap: 0.8rem;
  margin: 2rem 0 0;
  padding: 0;
}

.hero-stats li {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.74);
  padding: 0.7rem 0.8rem;
}

.hero-stats strong {
  display: block;
  font-size: 1.25rem;
}

.hero-stats span {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 2.2rem;
}

.features article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.features h2 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.features p {
  color: var(--ink-soft);
  line-height: 1.55;
}

.languages {
  margin-top: 3.8rem;
  padding: 2rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(15, 118, 110, 0.1), rgba(249, 115, 22, 0.12)),
    var(--paper-2);
}

.languages h2 {
  font-family: "DM Serif Display", serif;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin: 0;
}

.language-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 0.8rem;
}

.language-grid span {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
  font-weight: 600;
}

.quiz-section {
  margin-top: 3.2rem;
}

.quiz-card {
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 8px);
  box-shadow: var(--shadow);
  padding: 1.7rem;
}

.quiz-app h3 {
  margin: 0.3rem 0 1rem;
}

.quiz-options {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.quiz-option {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 11px;
  padding: 0.72rem;
  cursor: pointer;
  font-family: inherit;
}

.quiz-option:hover:not([disabled]) {
  border-color: var(--accent);
}

.quiz-option.is-correct {
  border-color: rgba(31, 157, 85, 0.6);
  background: rgba(31, 157, 85, 0.1);
}

.quiz-option.is-wrong {
  border-color: rgba(211, 63, 73, 0.5);
  background: rgba(211, 63, 73, 0.08);
}

.quiz-feedback {
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.next-btn {
  min-width: 120px;
}

.quiz-result {
  margin-bottom: 1rem;
}

.waitlist {
  margin-top: 3.2rem;
  margin-bottom: 4rem;
  text-align: center;
  padding: 2.2rem;
  border-radius: calc(var(--radius) + 8px);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.94), rgba(253, 241, 220, 0.9));
}

.waitlist h2 {
  font-family: "DM Serif Display", serif;
  margin-bottom: 0.6rem;
}

.waitlist p {
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 auto 1.2rem;
}

.waitlist-form {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.waitlist-form input {
  min-width: 280px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  font: inherit;
}

.site-footer {
  border-top: 1px solid rgba(216, 222, 223, 0.8);
  width: min(1120px, 92vw);
  margin: 0 auto 1.3rem;
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.blog-body {
  background: linear-gradient(180deg, #fffdf6 0%, #f2f8f6 100%);
}

.blog-main,
.article-wrap {
  width: min(900px, 92vw);
  margin: 2.8rem auto 3.5rem;
}

.blog-main h1,
.article-wrap h1 {
  font-family: "DM Serif Display", serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}

.post-grid {
  margin-top: 2rem;
}

.post-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 1.4rem;
}

.post-meta {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.post-card a {
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.article-content {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.article-content h2 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.article-content p {
  line-height: 1.7;
  color: #293747;
}

.error-page {
  text-align: center;
  padding: 6rem 1rem 4rem;
}

.error-page h1 {
  font-family: "DM Serif Display", serif;
  font-size: clamp(4rem, 12vw, 8rem);
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
}

.waitlist-success {
  color: var(--accent);
  font-weight: 700;
  margin-top: 0.8rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.is-visible {
  animation: rise 0.75s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .site-header {
    border-radius: var(--radius);
    flex-wrap: wrap;
    justify-content: center;
  }

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

@media (max-width: 760px) {
  .top-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 4.2rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    max-width: 280px;
  }

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

  .waitlist-form input {
    min-width: 100%;
  }

  .site-footer {
    flex-direction: column;
    gap: 0.55rem;
    text-align: center;
  }
}