.emoji-img {
  display: inline-block;
  vertical-align: middle;
  width: 1em;
  height: 1em;
  object-fit: contain;
}

/* Emoji icon containers - make images fit nicely */
.sensitive-icon .emoji-img,
.advantage-icon .emoji-img,
.saas-card-icon .emoji-img,
.why-icon .emoji-img,
.about-feature-icon .emoji-img,
.order-card-icon .emoji-img,
.sensitive-badge-icon .emoji-img,
.form-success-icon .emoji-img {
  width: 80% !important;
  height: 80% !important;
}

.float-btn-icon .emoji-img {
  width: 1.5em !important;
  height: 1.5em !important;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #0066CC; --primary-dark: #004C99; --primary-light: #E6F1FB;
  --text: #1A1A1A; --text-secondary: #5F5F5F; --text-tertiary: #8C8C8C;
  --bg: #FFFFFF; --bg-secondary: #F7F8FA;
  --border: rgba(0,0,0,0.08);
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px; color: var(--text); line-height: 1.6;
  background: var(--bg-secondary); min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.header {
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 100; border-bottom: 0.5px solid var(--border);
}
.nav {
  max-width: 1100px; margin: 0 auto; padding: 12px 24px;
  display: flex; justify-content: space-between; align-items: center; min-height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 600; color: var(--primary); }
.logo-icon { width: 40px; height: 40px; flex-shrink: 0; }
.logo-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }
.logo-text-wrap { display: inline-flex; flex-direction: column; align-items: stretch; gap: 1px; line-height: 1.15; }
.logo-text-wrap > span:first-child { text-align: center; letter-spacing: 1px; white-space: nowrap; }
.logo-en { font-size: 12px; font-weight: 600; color: var(--primary); display: block; width: 100%; text-align: center; letter-spacing: 0.02em; white-space: nowrap; }
.back-link { font-size: 13px; color: var(--text-secondary); }

.help-layout {
  max-width: 1100px; margin: 0 auto; padding: 32px 24px 64px;
  display: grid; grid-template-columns: 220px 1fr; gap: 32px; align-items: start;
}
.help-sidebar {
  position: sticky; top: 88px;
  background: white; border: 1px solid var(--border); border-radius: 12px; padding: 16px;
}
.help-sidebar-title { font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 12px; }
.help-nav { list-style: none; }
.help-nav li + li { margin-top: 4px; }
.help-nav a {
  display: block; padding: 8px 10px; border-radius: 8px;
  font-size: 13px; color: var(--text-secondary); line-height: 1.5;
}
.help-nav a:hover { background: var(--primary-light); color: var(--primary); }
.help-nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }

.help-main { min-width: 0; }
.breadcrumb { font-size: 13px; color: var(--text-tertiary); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb .sep { margin: 0 6px; color: var(--text-tertiary); }
.help-title { font-size: 28px; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.help-intro { font-size: 15px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 28px; max-width: 720px; }
.help-section-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; color: var(--text); }

.faq-accordion {
  background: white; border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  width: 100%; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  padding: 18px 22px; border: none; background: none; cursor: pointer; text-align: left;
  font-family: inherit;
}
.faq-question:hover { background: var(--bg-secondary); }
.faq-question h3 { font-size: 15px; font-weight: 500; color: var(--text); line-height: 1.6; flex: 1; }
.faq-item.open .faq-question h3 { color: var(--primary); }
.faq-toggle { flex-shrink: 0; width: 24px; height: 24px; line-height: 24px; text-align: center; color: var(--primary); font-size: 18px; font-weight: 600; }
.faq-answer { display: none; padding: 0 22px 18px; }
.faq-item.open .faq-answer { display: block; }
.faq-lead { font-size: 14px; color: var(--text); font-weight: 500; line-height: 1.75; margin-bottom: 8px; }
.faq-body { font-size: 14px; color: var(--text-secondary); line-height: 1.8; white-space: pre-wrap; }

.help-cta-wrap { margin-top: 32px; text-align: center; }
.help-cta {
  display: inline-block; padding: 14px 32px; background: var(--primary); color: white;
  border-radius: 8px; font-size: 15px; font-weight: 500; transition: background 0.2s;
}
.help-cta:hover { background: var(--primary-dark); color: white; }
.page-footer { text-align: center; margin-top: 40px; font-size: 12px; color: var(--text-tertiary); }

.help-index-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.help-category-card {
  display: block; background: white; border: 1px solid var(--border); border-radius: 16px;
  padding: 22px 24px; transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04); color: inherit;
}
.help-category-card:hover {
  border-color: rgba(0,102,204,0.35); box-shadow: 0 8px 28px rgba(0,102,204,0.12);
  transform: translateY(-2px); color: inherit;
}
.help-category-num {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); padding: 2px 8px; border-radius: 4px; margin-bottom: 10px;
}
.help-category-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.help-category-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.help-category-meta { font-size: 13px; font-weight: 500; color: var(--primary); }

@media (max-width: 900px) {
  .help-layout { grid-template-columns: 1fr; }
  .help-sidebar { position: static; }
  .help-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
}
@media (max-width: 768px) {
  .help-title { font-size: 22px; }
  .help-nav { grid-template-columns: 1fr; }
  .help-index-grid { grid-template-columns: 1fr; }
}