/* ─── Utilities ─────────────────────────────────────────────────── */
.sp-br {
  display: none;
}
@media (max-width: 1068px) {
  .sp-br {
    display: block;
  }
}

/* ─── Reset & Base ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --accent: #4a7ff5;
  --accent-light: #6b9bff;
  --text: #1d1d1f;
  --text-sub: #6e6e73;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --border: #d2d2d7;
  --radius: 20px;
  --font: -apple-system, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  color: var(--text);
  background: var(--bg);

  overflow-x: hidden;
}

/* ─── Nav ───────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(20px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.nav-inner {
  max-width: 1020px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-icon {
  width: 38px;
  height: 38px;
}

.nav-links {
  display: flex;
  gap: 32px;
  margin-left: auto;
  margin-right: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-cta {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  padding: 8px 18px;
  background: var(--accent);
  border-radius: 100px;
  transition:
    background 0.2s,
    transform 0.18s;
}
.nav-cta:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform 0.2s,
    opacity 0.2s;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  display: none;
  flex-direction: column;
  padding: 8px 24px 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.95);
}

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

.nav-menu-link {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-menu-link:last-child {
  border-bottom: none;
}

/* ─── Hero ──────────────────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 100px 24px 80px;
  background: #ffffff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 44px;
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: 76px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--text);
  margin-bottom: 28px;
}

.hero-sub {
  font-size: 24px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.65;
  max-width: 800px;
  margin-bottom: 36px;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-image img {
  width: 260px;
  height: auto;
}

/* App Store badge */
.btn-appstore-badge {
  display: inline-block;
  transition:
    transform 0.18s,
    opacity 0.18s;
}
.btn-appstore-badge:hover {
  transform: translateY(-2px);
  opacity: 0.85;
}
.btn-appstore-badge img {
  height: 60px;
  width: auto;
  display: block;
}

/* ─── Section commons ───────────────────────────────────────────── */
.section-title {
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 56px;
}

/* ─── Features ──────────────────────────────────────────────────── */
.features {
  background: #f3f5fb;
  padding: 120px 24px 40px;
}

.features > .section-title {
  max-width: 1020px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 20px;
}

.features-header-sub {
  max-width: 1020px;
  margin: 0 auto 60px;
  font-size: 21px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
}

.feature-row {
  background: var(--bg);
  border-radius: 24px;
  max-width: 1395px;
  margin: 0 auto 24px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.feature-row-inner {
  display: flex;
  align-items: center;
  gap: 0;
}

.feature-row-inner--reverse {
  flex-direction: row-reverse;
}

.feature-row-text {
  flex: 1 1 50%;
  padding: 88px;
}

.feature-row-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  padding-left: 14px;
  border-left: 3px solid var(--accent);
  margin-bottom: 16px;
}

.feature-row-title {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.feature-row-body {
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
}

.feature-row-image {
  flex: 1 1 50%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  min-height: 600px;
  padding-top: 40px;
}

.feature-row-image img {
  width: 100%;
  max-width: 420px;
  height: auto;
  display: block;
}

/* ─── Use Cases ─────────────────────────────────────────────────── */
.usecases {
  background: var(--bg);
  padding: 100px 24px;
}

.usecases > .section-title {
  max-width: 1020px;
  margin-left: auto;
  margin-right: auto;
}
.usecases > .section-title {
  margin-bottom: 56px;
}

.usecase-grid {
  max-width: 1020px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.usecase-card {
  border-radius: 20px;
  padding: 40px 40px 44px;
  border: 1px solid rgba(0, 0, 0, 0.07);
  transition: transform 0.2s;
  display: flex;
  flex-direction: column;
}

.usecase-card:nth-child(1) {
  background: #eef3ff; /* blue — 語学 */
}
.usecase-card:nth-child(2) {
  background: #f3eeff; /* purple — 音楽 */
}
.usecase-card:nth-child(3) {
  background: #eefaf3; /* green — ダンス */
}
.usecase-card:nth-child(4) {
  background: #fff4ec; /* orange — 文字起こし */
}

.usecase-card:hover {
  transform: translateY(-2px);
}

.usecase-illust {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  min-height: 160px;
}

.usecase-illust img {
  width: 100%;
  max-width: 260px;
  height: 160px;
  object-fit: contain;
}

.usecase-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.usecase-card p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}

/* ─── What's New ────────────────────────────────────────────────── */
.whatsnew {
  background: #f3f5fb;
  padding: 40px 24px 100px;
}

.whatsnew-inner {
  max-width: 1020px;
  margin: 0 auto;
}

.whatsnew-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  padding-bottom: 24px;
  margin-bottom: 0;
  border-bottom: 1px solid #d2d2d7;
}

.whatsnew-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 48px;
  margin-top: -1px;
}

.whatsnew-card {
  padding: 24px 45px 32px 0;
  border-top: 1px solid #d2d2d7;
}

.new-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
}

.whatsnew-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.whatsnew-card p {
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
}

/* ─── Platforms ─────────────────────────────────────────────────── */

/* ─── CTA Section ───────────────────────────────────────────────── */
.cta-section {
  background: #f3f5fb;
  padding: 100px 24px;
}

.cta-inner {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.cta-inner h2 {
  font-size: 60px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.cta-inner p {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 40px;
  line-height: 1.65;
}

.btn-appstore--dark {
  background: var(--accent);
}
.btn-appstore--dark:hover {
  background: var(--accent-light);
  box-shadow: 0 8px 24px rgba(94, 92, 230, 0.35);
}

/* ─── Coming Soon ───────────────────────────────────────────────── */
.coming-soon {
  min-height: calc(100svh - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
}

.coming-soon-inner {
  text-align: center;
}

.coming-soon h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.coming-soon p {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-sub);
}

/* ─── Doc pages (support / guide) ───────────────────────────────── */
.doc {
  padding: 120px 24px 80px;
}

.doc-inner {
  max-width: 820px;
  margin: 0 auto;
}

.doc-inner--wide {
  max-width: 980px;
}

.doc-inner > h2 {
  margin-top: 48px;
}

.doc-title:has(+ .doc-subtitle) {
  margin-bottom: 8px;
}

.doc p.doc-subtitle {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  margin-bottom: 48px;
}

.doc-crumb {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}

.doc-crumb a {
  color: var(--text-sub);
  text-decoration: none;
}

.doc-crumb a:hover {
  color: var(--text);
}

.doc-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-align: center;
  margin-bottom: 48px;
}

.doc-title--left {
  text-align: left;
  margin-bottom: 24px;
}

.doc-lead {
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.65;
  margin-bottom: 24px;
}

.doc-section {
  padding: 40px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.doc-section:last-child {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.doc h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.doc h3 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 12px;
}

.doc p {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 16px;
}

.doc p:last-child {
  margin-bottom: 0;
}

.doc a {
  color: var(--accent);
  text-decoration: none;
}

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

.doc ol,
.doc ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.doc li {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
  margin-bottom: 12px;
}

.doc li:last-child {
  margin-bottom: 0;
}

.doc li > ul,
.doc li > ol {
  margin-top: 12px;
}

.doc li > p {
  margin-bottom: 12px;
}

.doc li > p:last-child {
  margin-bottom: 0;
}

.doc-mail {
  display: inline-block;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  padding: 4px 0;
}

.doc-note {
  font-size: 14px;
  color: var(--text-sub);
  padding-left: 12px;
  border-left: 3px solid var(--border);
}

/* Guide list (on support page) */
.doc-guide-list {
  list-style: none;
  padding-left: 0;
  margin-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.doc-guide-list li {
  margin-bottom: 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.doc-guide-list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 0;
  color: var(--text);
  text-decoration: none;
  transition: transform 0.15s;
}

.doc-guide-list a:hover {
  transform: translateX(4px);
  text-decoration: none;
}

.doc-guide-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.doc-guide-desc {
  font-size: 14px;
  color: var(--text-sub);
}

/* ─── Blog ─────────────────────────────────────────────────────── */
/* Index page */
.blog-index {
  padding: 120px 24px 80px;
}

.blog-index-inner {
  max-width: 660px;
  margin: 0 auto;
}

.blog-index-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-align: center;
  margin-bottom: 48px;
}

.blog-list {
  list-style: none;
  padding-left: 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.blog-list li {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.blog-list a {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  color: var(--text);
  text-decoration: none;
}

.blog-list-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.blog-list-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-list-meta {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
}

.blog-list-thumb {
  width: 80px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 8px;
}

img.blog-list-thumb {
  object-fit: cover;
}

div.blog-list-thumb {
  background: var(--bg-alt);
}

/* Article page: layout */
.blog-article {
  padding-top: 64px;
  padding-bottom: 80px;
}

.blog-article-inner {
  max-width: 660px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Article page: hero */
.blog-hero {
  max-width: 660px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.blog-hero-image,
.blog-hero-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
}

.blog-hero-image {
  object-fit: cover;
}

.blog-hero-placeholder {
  background: var(--bg-alt);
}

/* Article page: header */
.blog-date {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.blog-article-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 32px;
}

/* Article page: body */
.blog-article p:not(.blog-date):not(.blog-article-crumb) {
  font-size: 17px;
  font-weight: 400;
  line-height: 1.7;
  color: #333;
  margin-bottom: 24px;
}

.blog-article a:not(.blog-share-btn) {
  color: var(--accent);
  text-decoration: none;
}

.blog-article a:not(.blog-share-btn):hover {
  text-decoration: underline;
}

/* Article page: media */
.blog-figure {
  margin: 32px 0;
}

.blog-figure img,
.blog-figure video {
  max-height: 400px;
  display: inline-block;
}

.blog-caption {
  margin-top: 12px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
}

.blog-inline-image {
  max-width: 100%;
  border-radius: 8px;
}

/* Article page: CTA / share / crumb */
.blog-cta {
  display: flex;
  justify-content: center;
  margin-top: 48px;
}

.blog-share {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.blog-share-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.blog-share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: opacity 0.15s;
}

.blog-share-btn:hover {
  opacity: 0.7;
  text-decoration: none;
}

.blog-share-x { color: #000; }
.blog-share-fb { color: #1877f2; }
.blog-share-line { color: #06c755; }
.blog-share-hatena { color: #00a4de; }

.blog-article-crumb {
  margin-top: 24px;
  font-size: 14px;
  font-weight: 600;
}

.blog-article-crumb a {
  color: var(--text-sub);
  text-decoration: none;
}

.blog-article-crumb a:hover {
  color: var(--text);
}

/* Lightbox (used on article pages) */
.lightbox-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.8);
  cursor: zoom-out;
  z-index: 1000;
}

.lightbox-overlay.is-active {
  display: flex;
}

.lightbox-overlay img,
.lightbox-overlay video {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

/* Table */
.doc-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.doc-table th,
.doc-table td {
  text-align: left;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  vertical-align: top;
}

.doc-table tbody tr:last-child th,
.doc-table tbody tr:last-child td {
  border-bottom: none;
}

.doc-table th {
  font-weight: 700;
  color: var(--text);
  background: rgba(0, 0, 0, 0.02);
}

.doc-table td:first-child {
  width: 100px;
  text-align: center;
}

.doc-icon {
  height: 22px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  filter: invert(1);
}

.doc-icon--lg {
  height: 28px;
}

.doc-icon-inline {
  height: 18px;
  width: auto;
  display: inline-block;
  vertical-align: -4px;
  margin: 0 2px;
  filter: invert(1);
}

.doc-app-icon {
  height: 22px;
  width: 22px;
  display: inline-block;
  vertical-align: -5px;
  margin: 0 2px;
  border-radius: 5px;
}

.doc-table td p {
  margin-bottom: 8px;
  font-size: 15px;
}

.doc-table td p:last-child {
  margin-bottom: 0;
}

/* ─── Footer ────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
}

.footer-inner {
  max-width: 1020px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--text);
}

.footer-copy {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-sub);
}

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1068px) {
  .hero-title {
    font-size: 36px;
  }
  .hero-sub {
    font-size: 17px;
  }
  .hero-image img {
    width: 200px;
  }
  .hero-inner {
    gap: 32px;
  }
  .nav {
    padding: 0 24px;
  }
  .nav-cta {
    display: none;
  }
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }

  .feature-row-inner,
  .feature-row-inner--reverse {
    flex-direction: column;
  }
  .feature-row-text {
    padding: 40px 32px 0;
  }
  .feature-row-title {
    font-size: 32px;
  }

  .section-title {
    font-size: 36px;
  }
  .features {
    padding-top: 80px;
  }
  .features-header-sub {
    font-size: 18px;
  }
  .feature-row-image {
    min-height: 300px;
    width: 100%;
    padding: 32px 42px 0;
  }
  .usecase-grid {
    grid-template-columns: 1fr;
  }
  .whatsnew-grid {
    grid-template-columns: 1fr;
  }
  .whatsnew-title {
    font-size: 24px;
  }
  .whatsnew-card {
    padding-top: 16px;
    padding-right: 0;
    padding-bottom: 20px;
  }
  .whatsnew-card h3 {
    font-size: 18px;
  }
  .whatsnew-card p {
    font-size: 16px;
  }

  .doc-title {
    font-size: 32px;
  }
  .doc h2 {
    font-size: 20px;
  }
  .doc p,
  .doc li {
    font-size: 15px;
  }
  .blog-article-title {
    font-size: 22px;
  }
  .blog-article p:not(.blog-date):not(.blog-article-crumb) {
    font-size: 16px;
  }
  .blog-figure img,
  .blog-figure video {
    max-height: 300px;
  }
  .blog-hero {
    padding: 0;
  }
  .blog-list-title {
    font-size: 16px;
    line-height: 1.4;
  }
  .blog-list-meta {
    margin-top: 4px;
  }
  .doc-lead {
    font-size: 16px;
  }
  .doc-guide-title {
    font-size: 16px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .cta-inner h2 {
    font-size: 52px;
  }
}

/* ─── Scroll animations ─────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .usecase-card {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeUp 0.6s ease forwards;
  }

  .usecase-card:nth-child(1) {
    animation-delay: 0.05s;
  }
  .usecase-card:nth-child(2) {
    animation-delay: 0.1s;
  }
  .usecase-card:nth-child(3) {
    animation-delay: 0.15s;
  }
  .usecase-card:nth-child(4) {
    animation-delay: 0.2s;
  }

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