/* ============================================================
   GET笔记超级助手 — 宣传站全站样式
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --brand: #6c5ce7;
  --brand-hover: #5a4bd1;
  --brand-light: #f7f3ff;
  --brand-badge: #ede8ff;
  --brand-text: #4d3fb4;
  --text-primary: #333;
  --text-secondary: #666;
  --text-heading: #2d2457;
  --bg-page: #f5f5f7;
  --bg-card: #ffffff;
  --border-card: #ececf4;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  --max-width: 1100px;
  --nav-height: 60px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  color: var(--text-primary);
  background: var(--bg-page);
  line-height: 1.6;
}
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-hover); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ---------- 工具类 ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-card); }
.section-purple { background: linear-gradient(135deg, #6c5ce7 0%, #8b7cf7 100%); color: #fff; }
.text-center { text-align: center; }
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.section-purple .section-title { color: #fff; }
.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
}
.section-purple .section-desc { color: rgba(255, 255, 255, 0.85); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-stack);
  padding: 12px 24px;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-hover); color: #fff; }
.btn-secondary { background: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border-card); }
.btn-secondary:hover { border-color: var(--brand); color: var(--brand); }
.btn-white { background: #fff; color: var(--brand); }
.btn-white:hover { background: #f0eef9; color: var(--brand); }
.btn-ghost-white { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.4); }
.btn-ghost-white:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ---------- Badge ---------- */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  background: var(--brand-badge);
  color: var(--brand-text);
}

/* ---------- 导航栏 ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-nav);
  transition: background 0.3s;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text-heading);
  text-decoration: none;
}
.nav-brand img { width: 32px; height: 32px; border-radius: 6px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--brand); }
.nav-links .btn-primary { font-size: 13px; padding: 8px 16px; color: #fff; }
.nav-links .btn-primary:hover { color: #fff; }
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  position: absolute;
  left: 6px;
  transition: all 0.3s;
}
.hamburger span:nth-child(1) { top: 9px; }
.hamburger span:nth-child(2) { top: 15px; }
.hamburger span:nth-child(3) { top: 21px; }
.hamburger.active span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 15px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 80px;
  background: linear-gradient(180deg, #fff 0%, var(--brand-light) 100%);
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
}
.hero-content { flex: 1; }
.hero-title {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-visual {
  flex: 0 0 380px;
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(108, 92, 231, 0.12);
  overflow: hidden;
}
.hero-visual img { width: 100%; }
.hero-visual .placeholder-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand-badge) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  font-size: 14px;
  font-weight: 500;
}

/* ---------- Hero 轮播 ---------- */
.hero-carousel {
  position: relative;
  overflow: visible;
}
/* 固定容器高度：以最高图的比例为准（543×888 ≈ 8:13） */
.hero-carousel-track {
  position: relative;
  width: 100%;
  aspect-ratio: 543 / 888;
  overflow: hidden;
}
.hero-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.hero-carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
}
.hero-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
}
.hero-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}
.hero-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--brand-badge);
  cursor: pointer;
  transition: background 0.2s;
  padding: 0;
}
.hero-carousel-dot.active {
  background: var(--brand);
}

/* ---------- 卖点网格 ---------- */
.selling-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.selling-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
  transition: box-shadow 0.3s, transform 0.3s;
}
.selling-card:hover {
  box-shadow: 0 6px 24px rgba(108, 92, 231, 0.1);
  transform: translateY(-2px);
}
.selling-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--brand-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}
.selling-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.selling-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- 演示区（左右交替） ---------- */
.demo-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 64px;
}
.demo-row:last-child { margin-bottom: 0; }
.demo-row.reverse { flex-direction: row-reverse; }
.demo-media {
  flex: 0 0 480px;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--bg-card);
}
.demo-media img, .demo-media .placeholder-img {
  width: 100%;
}
.demo-media .placeholder-img {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand-badge) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  font-size: 14px;
  font-weight: 500;
}
/* ---------- 页面注入轮播 ---------- */
.demo-inject-carousel {
  position: relative;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}
.inject-carousel-track {
  position: relative;
  width: 100%;
  /* 以最高的图（xyz 1008×1319）为基准，固定容器高度，防止切换时页面跳动 */
  aspect-ratio: 1008 / 1319;
  overflow: hidden;
}
.inject-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.inject-carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
}
.inject-carousel-slide img {
  width: 100%;
  height: calc(100% - 32px);
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-card);
}
.inject-carousel-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 32px;
  line-height: 32px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}
.inject-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.inject-carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: var(--brand-badge);
  cursor: pointer;
  transition: background 0.2s;
  padding: 0;
}
.inject-carousel-dot.active {
  background: var(--brand);
}
.demo-text { flex: 1; }
.demo-text h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.demo-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}
.demo-text ul {
  list-style: none;
}
.demo-text ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 15px;
}
.demo-text ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}

/* ---------- 使用流程（步骤条） ---------- */
.steps {
  display: flex;
  gap: 32px;
  justify-content: center;
}
.step-item {
  flex: 1;
  max-width: 280px;
  text-align: center;
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
/* 步骤连接线 */
.step-item + .step-item::before {
  content: '';
  position: absolute;
  top: 24px;
  left: -16px;
  width: calc(100% - 260px + 32px);
  height: 2px;
  background: var(--brand-badge);
  transform: translateX(-100%);
}

/* ---------- 用户评价 ---------- */
.reviews-section { background: var(--brand-light); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}
.review-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-heading);
}
.review-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}
.review-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  background: var(--brand-badge);
  color: var(--brand-text);
}

/* ---------- 功能规格 ---------- */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 700px;
  margin: 0 auto;
}
.spec-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.spec-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.spec-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 4px;
}
.spec-item p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  font-family: var(--font-stack);
  text-align: left;
}
.faq-question::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--brand);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-question::after {
  content: '−';
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: left;
}
.faq-answer-inner ol {
  list-style: decimal;
  margin-left: 20px;
}
.faq-answer-inner ul {
  list-style: disc;
  margin-left: 20px;
}
.faq-answer-inner li {
  margin-bottom: 4px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--text-heading);
  color: rgba(255, 255, 255, 0.7);
  padding: 40px 0;
  font-size: 14px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  font-weight: 700;
  font-size: 15px;
  color: #fff;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 12px; color: rgba(255, 255, 255, 0.5); }

/* ---------- 帮助中心布局 ---------- */
.help-layout {
  display: flex;
  gap: 40px;
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 80px;
}
.help-sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  align-self: flex-start;
  max-height: calc(100vh - var(--nav-height) - 48px);
  overflow-y: auto;
}
.help-sidebar-toggle {
  display: none;
  width: 100%;
  padding: 12px 16px;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-stack);
  cursor: pointer;
  margin-bottom: 16px;
}
.help-sidebar nav a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all 0.2s;
  text-decoration: none;
}
.help-sidebar nav a:hover,
.help-sidebar nav a.active {
  color: var(--brand);
  border-left-color: var(--brand);
  background: var(--brand-light);
}
.help-main { flex: 1; min-width: 0; }
.help-section {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}
.help-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #f0eef9;
}
.help-section h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin: 20px 0 10px;
}
.help-section ol,
.help-section ul {
  margin-left: 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.help-section ol { list-style: decimal; }
.help-section ul { list-style: disc; }
.help-section li { margin-bottom: 4px; }
.help-section code {
  background: #f0eef9;
  color: #5746c6;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}
.help-section .faq-item-block {
  border-top: 1px solid #f0eef9;
  padding-top: 16px;
  margin-top: 16px;
}
.help-section .faq-item-block h3 {
  margin-top: 0;
}
.help-img-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0;
}
.help-img {
  margin: 0;
}
.help-img img {
  border-radius: 8px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-card);
}
.help-img figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 8px;
}
.help-hero-section {
  background: linear-gradient(135deg, #fff 0%, var(--brand-light) 100%);
  border: 1px solid #ece6ff;
  text-align: center;
  padding: 48px 32px;
}
.help-hero-section h1 {
  font-size: 32px;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.help-hero-section p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 24px;
}
.help-hero-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 更新日志 ---------- */
.changelog-page {
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 80px;
  max-width: 760px;
  margin: 0 auto;
}
.changelog-hero {
  text-align: center;
  margin-bottom: 48px;
}
.changelog-hero h1 {
  font-size: 32px;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.changelog-hero p {
  color: var(--text-secondary);
}
.changelog-item {
  position: relative;
  padding-left: 32px;
  margin-bottom: 40px;
}
.changelog-item::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: -40px;
  width: 2px;
  background: var(--brand-badge);
}
.changelog-item:last-child::before {
  bottom: 0;
}
.changelog-item::after {
  content: '';
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand);
  border: 2px solid var(--brand-light);
}
.changelog-version {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}
.changelog-date {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.changelog-category {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  margin: 12px 0 6px;
}
.changelog-item ul {
  list-style: disc;
  margin-left: 18px;
}
.changelog-item li {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.6;
}

/* ---------- 滚动动画 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-visual { flex: none; max-width: 400px; width: 100%; margin: 0 auto; }
  .hero-content { order: 1; }
  .hero-actions { justify-content: center; }
  .hero-tags { justify-content: center; }
  .hero-title { font-size: 32px; }
  .selling-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .demo-row, .demo-row.reverse { flex-direction: column; }
  .demo-media { flex: none; max-width: 100%; }
  .demo-inject-carousel { flex: none; max-width: 100%; }
  .steps { flex-direction: column; align-items: center; }
  .step-item + .step-item::before { display: none; }
  .reviews-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .specs-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
  .hero { padding-top: calc(var(--nav-height) + 32px); padding-bottom: 48px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 15px; margin-bottom: 32px; }

  /* 帮助中心移动端 */
  .help-layout { flex-direction: column; gap: 0; }
  .help-sidebar {
    flex: none;
    position: static;
    max-height: none;
    margin-bottom: 24px;
  }
  .help-sidebar-toggle { display: block; }
  .help-sidebar nav { display: none; }
  .help-sidebar nav.open { display: block; }
  .help-section { padding: 20px; }
  .help-hero-section { padding: 32px 20px; }
  .help-hero-section h1 { font-size: 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 26px; }
  .hero-subtitle { font-size: 15px; }
  .btn { font-size: 14px; padding: 10px 18px; }
}