@font-face {
  font-family: "Ripple";
  src: url("https://ripple.com/_next/static/immutable/media/TT_Ripple_Book-s.p.45akwv20ve4rn.woff2") format("woff2");
  font-display: swap;
  font-weight: 350;
  font-style: normal;
}

@font-face {
  font-family: "Ripple";
  src: url("https://ripple.com/_next/static/immutable/media/TT_Ripple_Regular-s.p.2vxdx--3-1thy.woff2") format("woff2");
  font-display: swap;
  font-weight: 500;
}

:root {
  --ink: #141a1f;
  --muted: #5e676e;
  --blue: #006aff;
  --line: #e5e7e8;
  --sky: #f2faff;
  --white: #fff;
  --radius: 16px;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Ripple", system-ui, -apple-system, Segoe UI, sans-serif;
  font-weight: 350;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover { text-decoration: none; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 8px 16px;
  background: var(--blue);
  color: var(--white);
  z-index: 100;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

.blog-header {
  border-bottom: 1px solid var(--line);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 10;
}

.blog-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  flex-wrap: wrap;
}

.blog-brand {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
}

.blog-brand span {
  color: var(--blue);
}

.blog-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
}

.blog-nav a {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
}

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

main { padding: 48px 0 80px; }

.hero-blog {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}

.hero-blog h1 {
  margin: 0 0 16px;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 350;
  letter-spacing: -2px;
  line-height: 1.05;
}

.hero-blog .lead {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.notice {
  padding: 16px 20px;
  border: 1px solid #b5dfff;
  border-radius: var(--radius);
  background: var(--sky);
  font-size: 0.95rem;
  margin: 24px 0;
}

.disclaimer-box {
  padding: 20px;
  border-left: 4px solid var(--blue);
  background: #fafafa;
  margin: 32px 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.article-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--white);
  transition: border-color 0.2s;
}

.article-card:hover { border-color: #b5dfff; }

.article-card h2,
.article-card h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.3px;
}

.article-card h2 a,
.article-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.article-card h2 a:hover,
.article-card h3 a:hover { color: var(--blue); }

.meta {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.category-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--sky);
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
}

.section-title {
  margin: 48px 0 20px;
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.5px;
}

.breadcrumbs {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 24px;
}

.breadcrumbs a { color: var(--muted); }

.breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumbs li::after {
  content: "/";
  margin-left: 8px;
  color: #aeb3b7;
}

.breadcrumbs li:last-child::after { content: ""; }

.article-body h2 {
  margin: 2em 0 0.75em;
  font-size: 1.5rem;
  font-weight: 500;
}

.article-body h3 {
  margin: 1.5em 0 0.5em;
  font-size: 1.2rem;
  font-weight: 500;
}

.article-body p { margin: 0 0 1em; }

.article-body ul {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

.references {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.references h2 {
  font-size: 1.1rem;
  margin: 0 0 12px;
}

.references ul {
  margin: 0;
  padding-left: 1.2em;
}

.pagination {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.9rem;
}

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

.pagination .current {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.blog-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0;
  background: #fafafa;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.blog-footer h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
  color: var(--muted);
}

.blog-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.blog-footer li { margin-bottom: 8px; }

.blog-footer a {
  color: var(--ink);
  text-decoration: none;
}

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

.footer-copy {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.contact-form {
  max-width: 520px;
  display: grid;
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  font-weight: 500;
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
}

.contact-form button {
  justify-self: start;
  padding: 12px 24px;
  border: 2px solid var(--blue);
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}

.contact-form button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-status {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
}

.form-status--info {
  background: var(--sky);
  border: 1px solid #b5dfff;
}

.form-status--error {
  background: #fff5f5;
  border: 1px solid #f5c2c2;
}

.legal-page h2 {
  margin-top: 2em;
  font-size: 1.35rem;
}

.legal-page h3 {
  margin-top: 1.25em;
  font-size: 1.1rem;
}

@media (max-width: 800px) {
  .grid-2 { grid-template-columns: 1fr; }
  .blog-nav { width: 100%; }
  main { padding-top: 32px; }
  body { font-size: 16px; }
  .container { width: min(var(--max), calc(100% - 32px)); }
}

@media (max-width: 767px) {
  .card-grid--swipe {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: inline mandatory;
    gap: 12px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .card-grid--swipe .article-card {
    flex: 0 0 82%;
    scroll-snap-align: start;
  }
}