/* roulang page: index */
:root {
    --primary: #0E7C7B;
    --primary-dark: #0B5F5E;
    --primary-light: #E6F4F1;
    --primary-lighter: #F0FAF7;
    --accent: #F59E0B;
    --accent-dark: #D97706;
    --accent-light: #FEF3C7;
    --bg: #F7F9F9;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --border: #E5E7EB;
    --card-bg: #FFFFFF;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.09);
    --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.75;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
.clamp-1 { display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.hide-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
.hide-scrollbar::-webkit-scrollbar { display: none; }

.topbar {
    background: #0B5F5E;
    color: rgba(255,255,255,.9);
    font-size: 12px;
}
.topbar a { color: rgba(255,255,255,.75); transition: color .2s; }
.topbar a:hover { color: #fff; }

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 6px 2px;
    position: relative;
    transition: color .2s;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 999px;
    background: var(--primary);
}

.segment-nav {
    display: flex;
    gap: 8px;
    padding: 10px 0 12px;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
}
.segment-tab {
    display: inline-flex;
    align-items: center;
    height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    background: #fff;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all .2s;
    flex-shrink: 0;
}
.segment-tab:hover { border-color: var(--primary); color: var(--primary); }
.segment-tab.active {
    background: var(--primary-light);
    color: var(--primary);
    border-color: rgba(14,124,123,.3);
    font-weight: 600;
}

.btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .01em;
    border: none;
    transition: all .22s;
}
.btn-accent:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245,158,11,.28);
}
.btn-accent:active { transform: translateY(0); box-shadow: none; }
.btn-accent.btn-sm { height: 36px; padding: 0 16px; font-size: 13px; }
.btn-accent.btn-lg { height: 48px; padding: 0 28px; font-size: 15px; }
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--primary);
    border: 1px solid rgba(14,124,123,.35);
    font-size: 14px;
    font-weight: 500;
    transition: all .22s;
}
.btn-outline:hover { background: var(--primary-light); border-color: var(--primary); }
.btn-outline.btn-sm { height: 36px; padding: 0 16px; font-size: 13px; }
.btn-outline.btn-lg { height: 48px; padding: 0 28px; font-size: 15px; }
.btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,.12);
    color: #fff;
    border: 1px solid rgba(255,255,255,.4);
    font-size: 14px;
    font-weight: 500;
    transition: all .22s;
}
.btn-outline-light:hover { background: rgba(255,255,255,.2); border-color: #fff; }

.section-title {
    font-size: 26px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text);
    position: relative;
    padding-left: 16px;
}
.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    border-radius: 999px;
    background: var(--primary);
}
.section-sub { font-size: 14px; color: var(--text-secondary); margin-top: 8px; }
.tag {
    display: inline-flex;
    align-items: center;
    height: 22px;
    padding: 0 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    background: var(--primary-light);
    color: var(--primary);
    letter-spacing: .02em;
}
.tag-accent {
    background: var(--accent-light);
    color: #92400E;
}

.hero-section {
    background:
        radial-gradient(circle at 18% 28%, rgba(14,124,123,.07) 0%, transparent 55%),
        radial-gradient(circle at 82% 72%, rgba(245,158,11,.09) 0%, transparent 45%),
        linear-gradient(135deg, #F0FDFA 0%, #FFFFFF 55%, #FEF3C7 100%);
    border-bottom: 1px solid var(--border);
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 26px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--accent-light);
    color: #92400E;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .03em;
}

.hero-card {
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.8);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.trend-card {
    width: 232px;
    flex-shrink: 0;
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all .25s;
}
.trend-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: rgba(14,124,123,.25);
}
.trend-card .cover-wrap { aspect-ratio: 3/4; overflow: hidden; position: relative; }
.trend-card .cover-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.trend-card:hover .cover-wrap img { transform: scale(1.05); }
.duration-badge {
    position: absolute;
    left: 10px;
    top: 10px;
    background: rgba(0,0,0,.55);
    color: #fff;
    font-size: 11px;
    padding: 3px 7px;
    border-radius: 6px;
    letter-spacing: .04em;
    backdrop-filter: blur(6px);
    font-weight: 500;
}

.list-row {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 16px 18px;
    transition: all .22s;
}
.list-row:hover {
    background: var(--primary-lighter);
    border-color: rgba(14,124,123,.28);
    box-shadow: var(--shadow-sm);
}
.rank-num {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    opacity: .35;
    min-width: 32px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}
.arrow-link { color: var(--text-tertiary); transition: all .2s; font-size: 18px; flex-shrink: 0; }
.list-row:hover .arrow-link { color: var(--primary); transform: translateX(3px); }

.testimonial-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all .25s;
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.quote-text { font-size: 14px; line-height: 1.75; color: var(--text); }
.avatar-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
}

.news-card {
    display: block;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 18px 20px;
    transition: all .22s;
}
.news-card:hover { border-color: rgba(14,124,123,.3); box-shadow: var(--shadow-md); }
.news-title { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.5; transition: color .2s; }
.news-card:hover .news-title { color: var(--primary); }
.news-summary { font-size: 13px; color: var(--text-secondary); margin-top: 6px; line-height: 1.65; }
.read-more { font-size: 13px; font-weight: 500; color: var(--primary); display: inline-flex; align-items: center; gap: 3px; margin-top: 10px; }
.read-more:hover { gap: 6px; }

.empty-state {
    border: 2px dashed #D1D5DB;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,.7);
    text-align: center;
    padding: 44px 20px;
    color: var(--text-tertiary);
    font-size: 14px;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    overflow: hidden;
    transition: all .25s;
}
.faq-item.active { border-color: rgba(14,124,123,.35); box-shadow: var(--shadow-sm); }
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    background: none;
    border: none;
    text-align: left;
    transition: background .2s;
}
.faq-question:hover { background: var(--primary-lighter); }
.faq-icon { transition: transform .3s; flex-shrink: 0; color: var(--text-tertiary); }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.active .faq-answer { max-height: 320px; }
.faq-answer-inner { padding: 0 20px 18px; font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

.footer-link { display: block; font-size: 14px; color: var(--text-secondary); padding: 4px 0; transition: all .2s; }
.footer-link:hover { color: var(--primary); transform: translateX(3px); }

@media (max-width: 767px) {
    .section-title { font-size: 22px; }
    .hero-h1 { font-size: 30px !important; line-height: 1.2 !important; }
}

/* roulang page: article */
:root {
  --color-brand: #0E7C7B;
  --color-brand-dark: #0B5F5E;
  --color-brand-light: #E6F4F1;
  --color-cta: #F59E0B;
  --color-cta-dark: #D97706;
  --color-cta-light: #FEF3C7;
  --color-bg: #F7F9F9;
  --color-text: #1F2937;
  --color-muted: #6B7280;
  --color-faint: #9CA3AF;
  --color-border: #E5E7EB;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 30px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}
::-moz-selection { background: var(--color-brand-light); }
::selection { background: var(--color-brand-light); }

/* ===== 导航 ===== */
.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #4B5563;
  padding: 0.375rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-link:hover { color: var(--color-brand); }
.nav-link.active { color: var(--color-brand); border-bottom-color: var(--color-brand); }

.chip {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  transition: all 0.2s ease;
}
.chip:hover { border-color: var(--color-brand); color: var(--color-brand); }
.chip-active { background: var(--color-brand-light); border-color: var(--color-brand); color: var(--color-brand); font-weight: 600; }

.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* ===== 卡片 ===== */
.card-hover {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: #99F6E4;
}

/* ===== 文章正文排版 ===== */
.article-body {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  word-break: break-word;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #111827;
  margin-top: 2.5em;
  margin-bottom: 0.75em;
  line-height: 1.3;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1F2937;
  margin-top: 2em;
  margin-bottom: 0.6em;
  line-height: 1.4;
}
.article-body p {
  margin-bottom: 1.4em;
  line-height: 1.75;
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.5em 1.2rem;
  padding-left: 0.25rem;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 0.5em; line-height: 1.75; }
.article-body li::marker { color: var(--color-brand); }
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 0.75rem;
  margin: 1.75rem auto;
  border: 1px solid var(--color-border);
  display: block;
}
.article-body blockquote {
  border-left: 4px solid var(--color-brand);
  background: var(--color-brand-light);
  padding: 1rem 1.25rem;
  border-radius: 0.5rem;
  margin: 1.5rem 0;
  color: #374151;
}
.article-body a {
  color: var(--color-brand);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body a:hover { color: var(--color-brand-dark); }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.875rem;
}
.article-body th,
.article-body td {
  border: 1px solid var(--color-border);
  padding: 0.6rem 0.75rem;
  text-align: left;
}
.article-body th { background: var(--color-brand-light); font-weight: 600; }

/* ===== 页脚 ===== */
.footer-link {
  display: block;
  font-size: 0.875rem;
  color: var(--color-muted);
  padding: 0.4rem 0;
  transition: color 0.2s ease;
}
.footer-link:hover { color: var(--color-brand); }

/* ===== 移动端菜单 ===== */
@media (max-width: 767px) {
  #mobileMenu a {
    display: block;
    padding: 0.75rem 0.5rem;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #4B5563;
    transition: background 0.2s ease, color 0.2s ease;
  }
  #mobileMenu a:hover { background: var(--color-brand-light); color: var(--color-brand); }
  #mobileMenu a.active { color: var(--color-brand); background: var(--color-brand-light); }
}

/* roulang page: category1 */
:root {
  --color-primary: #0E7C7B;
  --color-primary-dark: #0B5F5E;
  --color-primary-light: #E6F4F1;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-accent-light: #FEF3C7;
  --color-bg: #F7F9F9;
  --color-card: #FFFFFF;
  --color-text: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: inherit; }
.container-page { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 768px) { .container-page { padding: 0 1.5rem; } }
.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: #4B5563;
  padding: 0.5rem 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link.active { color: var(--color-primary); border-bottom-color: var(--color-primary); font-weight: 600; }
.chip {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #6B7280;
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.chip.active { background: var(--color-primary-light); color: var(--color-primary); border-color: rgba(14,124,123,0.35); font-weight: 600; }
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 24px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}
.btn-accent:hover { background-color: var(--color-accent-dark); transform: translateY(-1px); box-shadow: 0 8px 16px rgba(245,158,11,0.25); }
.btn-accent:active { transform: translateY(0); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 24px;
  background: #FFFFFF;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}
.btn-outline:hover { background: var(--color-primary-light); }
.btn-lg { height: 52px; padding: 0 32px; font-size: 1rem; border-radius: 10px; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 0.8125rem; border-radius: 6px; }
.badge-accent {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--color-accent-light);
  color: #D97706;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--color-accent-light);
  color: #92400E;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid #FDE68A;
}
.feature-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all 0.25s ease;
}
.feature-card:hover {
  border-color: rgba(14,124,123,0.3);
  box-shadow: 0 8px 24px rgba(15,23,42,0.06);
  transform: translateY(-2px);
}
.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.scene-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: all 0.25s ease;
}
.scene-item:hover { border-color: rgba(14,124,123,0.3); box-shadow: 0 4px 16px rgba(15,23,42,0.05); }
.step-item {
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px 24px 24px;
  transition: all 0.25s ease;
}
.step-item:hover { border-color: rgba(14,124,123,0.3); box-shadow: 0 8px 24px rgba(15,23,42,0.06); transform: translateY(-2px); }
.step-num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  margin-bottom: 14px;
}
.testimonial-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.star { color: var(--color-accent); }
.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.25s ease;
}
.faq-item[open] { border-color: rgba(14,124,123,0.3); box-shadow: 0 4px 16px rgba(15,23,42,0.05); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--color-primary); }
.faq-item .faq-icon { transition: transform 0.25s ease; color: var(--color-text-muted); flex-shrink: 0; }
.faq-item[open] .faq-icon { transform: rotate(45deg); color: var(--color-primary); }
.faq-item .faq-answer { padding: 0 20px 18px; font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.75; }
.footer-link {
  display: block;
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}
.footer-link:hover { color: var(--color-primary); }
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
.section-title-wrap { display: flex; align-items: flex-start; gap: 12px; }
.section-title-bar { width: 4px; height: 32px; background: var(--color-primary); border-radius: 2px; flex-shrink: 0; margin-top: 4px; }