/* ========================================
   Site 1 — py-fanyi-youdao.com.cn
   Fresh blue-green learning style
   ======================================== */

:root {
  --teal-50: #f0fdfa;
  --teal-100: #ccfbf1;
  --teal-200: #99f6e4;
  --teal-300: #5eead4;
  --teal-400: #2dd4bf;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;
  --teal-800: #115e59;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --mint-100: #d1fae5;
  --mint-200: #a7f3d0;
  --ink: #0f2f2c;
  --ink-soft: #3d5c58;
  --ink-muted: #5f7a76;
  --surface: #ffffff;
  --surface-soft: #f7fffc;
  --border: #cde8e2;
  --border-soft: #e2f5f1;
  --shadow: 0 10px 30px rgba(13, 148, 136, 0.08);
  --shadow-lg: 0 18px 48px rgba(15, 118, 110, 0.12);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --max: 1120px;
  --nav-h: 72px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  line-height: 1.7;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(94, 234, 212, 0.35), transparent 55%),
    radial-gradient(900px 420px at 90% 0%, rgba(34, 211, 238, 0.22), transparent 50%),
    linear-gradient(180deg, #f4fffb 0%, #eef9f7 40%, #f8fffd 100%);
  min-height: 100vh;
}

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

a {
  color: var(--teal-700);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--teal-500);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
}

ul,
ol {
  padding-left: 1.2em;
}

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

.section {
  padding: 72px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(240, 253, 250, 0.85));
  border-block: 1px solid var(--border-soft);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  letter-spacing: 0.02em;
  color: var(--teal-800);
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--teal-100), var(--mint-100));
  color: var(--teal-700);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ---------- Nav ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(205, 232, 226, 0.8);
  box-shadow: 0 4px 20px rgba(15, 118, 110, 0.05);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--teal-800);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--teal-700);
  background: var(--teal-50);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--teal-500), var(--cyan-500));
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(13, 148, 136, 0.25);
}

.nav-cta:hover {
  filter: brightness(1.05);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--teal-50);
  color: var(--teal-700);
  align-items: center;
  justify-content: center;
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

#nav-check {
  display: none;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
  text-align: center;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.75;
  cursor: wait;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--teal-500) 0%, var(--cyan-500) 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(13, 148, 136, 0.28);
}

.btn-primary:hover {
  filter: brightness(1.04);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--teal-700);
  border: 1.5px solid var(--teal-300);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: var(--teal-50);
  color: var(--teal-700);
}

.btn-soft {
  background: linear-gradient(135deg, var(--teal-100), var(--mint-100));
  color: var(--teal-800);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--nav-h) + 64px) 0 80px;
  text-align: center;
}

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

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.25;
  color: var(--teal-800);
  letter-spacing: 0.01em;
}

.hero-lead {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 1.12rem;
  color: var(--ink-soft);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
  color: var(--teal-600);
}

.hero-visual {
  margin: 40px auto 0;
  max-width: 680px;
  padding: 28px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(240, 253, 250, 0.9)),
    linear-gradient(135deg, var(--teal-200), var(--cyan-400));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.hero-visual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.hero-chip {
  padding: 18px 12px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border-soft);
  text-align: center;
}

.hero-chip strong {
  display: block;
  color: var(--teal-700);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.hero-chip span {
  color: var(--ink-muted);
  font-size: 0.85rem;
}

/* ---------- Cards / Features ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: linear-gradient(145deg, var(--teal-100), var(--mint-100));
  color: var(--teal-700);
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: var(--teal-800);
}

.card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

/* ---------- Stats ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-item {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, var(--teal-50));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.stat-item strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--teal-600);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-item span {
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* ---------- Platforms ---------- */
.platform-card {
  text-align: center;
  padding: 32px 22px;
}

.platform-card .card-icon {
  margin-inline: auto;
}

.platform-card .btn {
  margin-top: 18px;
}

.platform-meta {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* ---------- Deep features ---------- */
.deep-feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
  margin-bottom: 40px;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.deep-feature:nth-child(even) {
  grid-template-columns: 0.9fr 1.1fr;
}

.deep-feature:nth-child(even) .deep-copy {
  order: 2;
}

.deep-feature:nth-child(even) .deep-panel {
  order: 1;
}

.deep-copy h3 {
  margin: 0 0 12px;
  font-size: 1.45rem;
  color: var(--teal-800);
}

.deep-copy p {
  margin: 0 0 12px;
  color: var(--ink-soft);
}

.deep-copy ul {
  margin: 12px 0 0;
  color: var(--ink-muted);
}

.deep-panel {
  border-radius: var(--radius);
  padding: 28px;
  background:
    linear-gradient(160deg, rgba(204, 251, 241, 0.9), rgba(209, 250, 229, 0.7)),
    var(--teal-50);
  border: 1px solid var(--border);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.deep-panel-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.9);
}

.deep-panel-row svg {
  width: 22px;
  height: 22px;
  color: var(--teal-600);
  flex-shrink: 0;
}

.deep-panel-row span {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* ---------- Reviews ---------- */
.review-card .stars {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
  color: #f59e0b;
}

.review-card .stars svg {
  width: 18px;
  height: 18px;
}

.review-card .review-text {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.review-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--teal-400), var(--cyan-400));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
}

.review-meta strong {
  display: block;
  color: var(--ink);
  font-size: 0.95rem;
}

.review-meta span {
  color: var(--ink-muted);
  font-size: 0.85rem;
}

/* ---------- Comparison ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.compare-table th,
.compare-table td {
  padding: 16px 18px;
  text-align: center;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.95rem;
}

.compare-table th {
  background: linear-gradient(180deg, var(--teal-50), #fff);
  color: var(--teal-800);
  font-weight: 700;
}

.compare-table th:first-child,
.compare-table td:first-child {
  text-align: left;
  color: var(--ink-soft);
  font-weight: 600;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table .yes {
  color: var(--teal-600);
  font-weight: 700;
}

.compare-table .partial {
  color: #d97706;
  font-weight: 600;
}

.compare-table .no {
  color: #94a3b8;
}

.compare-table .highlight-col {
  background: rgba(204, 251, 241, 0.35);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-item details {
  padding: 0;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 600;
  color: var(--teal-800);
  position: relative;
  padding-right: 48px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--teal-500);
  border-bottom: 2px solid var(--teal-500);
  transform: translateY(-65%) rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item details[open] summary::after {
  transform: translateY(-35%) rotate(225deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  color: var(--ink-muted);
  border-top: 1px solid var(--border-soft);
  margin-top: 0;
  padding-top: 14px;
}

/* ---------- Download page ---------- */
.download-hero {
  padding: calc(var(--nav-h) + 56px) 0 60px;
}

.download-hero-card {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
  padding: 40px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(240, 253, 250, 0.92)),
    linear-gradient(120deg, var(--teal-200), var(--cyan-400));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.download-hero-card h1 {
  margin: 0 0 14px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  color: var(--teal-800);
  line-height: 1.3;
}

.download-hero-card .lead {
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.download-side {
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--border);
}

.download-side .os-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--teal-100), var(--mint-100));
  color: var(--teal-700);
}

.download-side .os-icon svg {
  width: 34px;
  height: 34px;
}

.download-side h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  color: var(--teal-800);
}

.download-side p {
  margin: 0 0 18px;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.steps li::before {
  content: counter(step);
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--teal-500), var(--cyan-500));
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.steps h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--teal-800);
}

.steps p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.req-list,
.changelog-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.req-list li,
.changelog-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
  color: var(--ink-soft);
}

.req-list li:last-child,
.changelog-list li:last-child {
  border-bottom: none;
}

.changelog-item {
  margin-bottom: 18px;
  padding: 22px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.changelog-item h3 {
  margin: 0 0 6px;
  color: var(--teal-800);
  font-size: 1.1rem;
}

.changelog-item .date {
  color: var(--ink-muted);
  font-size: 0.88rem;
  margin-bottom: 10px;
}

.changelog-item ul {
  margin: 0;
  color: var(--ink-soft);
}

.security-note {
  padding: 28px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--teal-50), var(--mint-100));
  border: 1px solid var(--border);
}

.security-note h3 {
  margin: 0 0 10px;
  color: var(--teal-800);
}

.security-note p {
  margin: 0;
  color: var(--ink-soft);
}

/* ---------- Article (zh-cn) ---------- */
.article-page {
  padding: calc(var(--nav-h) + 48px) 0 72px;
}

.article {
  max-width: 780px;
  margin: 0 auto;
  padding: 40px 36px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.article h1 {
  margin: 0 0 18px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--teal-800);
  line-height: 1.35;
}

.article .article-lead {
  margin: 0 0 28px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--teal-50);
  border-left: 4px solid var(--teal-400);
  color: var(--ink-soft);
}

.article h2 {
  margin: 36px 0 14px;
  font-size: 1.35rem;
  color: var(--teal-800);
}

.article h3 {
  margin: 24px 0 10px;
  font-size: 1.1rem;
  color: var(--teal-700);
}

.article p {
  margin: 0 0 14px;
  color: var(--ink-soft);
}

.article ul,
.article ol {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.article li {
  margin-bottom: 6px;
}

.cta-box {
  margin: 36px 0 12px;
  padding: 28px;
  text-align: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--teal-100), var(--mint-100));
  border: 1px solid var(--border);
}

.cta-box h2 {
  margin: 0 0 10px;
  font-size: 1.3rem;
}

.cta-box p {
  margin: 0 0 18px;
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 40px;
  padding: 40px 0 32px;
  background: linear-gradient(180deg, #0f766e, #115e59);
  color: rgba(255, 255, 255, 0.9);
}

.site-footer a {
  color: #a7f3d0;
}

.site-footer a:hover {
  color: #fff;
}

.footer-inner {
  display: grid;
  gap: 18px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
}

.footer-brand svg {
  width: 28px;
  height: 28px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
}

.footer-secure {
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.95rem;
}

.footer-copy {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- Misc ---------- */
.inline-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.inline-note svg {
  width: 16px;
  height: 16px;
  color: var(--teal-600);
}

.text-center {
  text-align: center;
}

.mt-24 {
  margin-top: 24px;
}

.mt-32 {
  margin-top: 32px;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-3,
  .grid-4,
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .deep-feature,
  .deep-feature:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .deep-feature:nth-child(even) .deep-copy,
  .deep-feature:nth-child(even) .deep-panel {
    order: initial;
  }

  .download-hero-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 20px 18px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  #nav-check:checked ~ .nav-links {
    display: flex;
  }

  .nav-links a,
  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .hero-visual-grid {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .article {
    padding: 28px 20px;
  }
}

@media (max-width: 560px) {
  .grid-3,
  .grid-4,
  .stats-row {
    grid-template-columns: 1fr;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .section {
    padding: 56px 0;
  }

  .deep-feature {
    padding: 24px;
  }
}