/* roulang page: index */
:root {
  --color-primary: #6D28D9;
  --color-primary-hover: #5B21B6;
  --color-primary-soft: #EDE9FE;
  --color-accent: #A3E635;
  --color-dark: #14141B;
  --color-dark-2: #1E1E28;
  --color-bg: #F7F6F2;
  --color-surface: #FFFFFF;
  --color-text: #23232B;
  --color-text-secondary: #6B6B76;
  --color-border: #E8E6E0;
  --success-color: #16A34A;
  --danger-color: #DC2626;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-img: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(21,21,28,0.04), 0 4px 12px rgba(21,21,28,0.06);
  --shadow-card-hover: 0 8px 24px rgba(21,21,28,0.10);
  --shadow-nav: 0 1px 2px rgba(21,21,28,0.04), 0 2px 12px rgba(21,21,28,0.05);
  --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; border: none; outline: none; }
ul, ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.text-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
}
.text-link:hover { color: var(--color-primary-hover); }
.text-link .arrow { transition: transform var(--transition); }
.text-link:hover .arrow { transform: translateX(3px); }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid #EEE;
  box-shadow: var(--shadow-nav);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.brand-text {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 8px 2px;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--color-primary); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: #F4F3EF;
  border-radius: var(--radius-pill);
  height: 40px;
  padding: 0 12px;
  width: 220px;
  border: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.search-box:focus-within {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(109,40,217,0.12);
}
.search-box svg { flex-shrink: 0; color: var(--color-text-secondary); }
.search-box input {
  flex: 1;
  background: transparent;
  height: 100%;
  font-size: 0.875rem;
  padding: 0 8px;
  color: var(--color-text);
}
.search-box input::placeholder { color: var(--color-text-secondary); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 28px;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.btn:active { transform: scale(0.98); }
.btn:focus-visible {
  outline: 3px solid rgba(109,40,217,0.25);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 14px rgba(109,40,217,0.35);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.5);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.85);
}
.btn-sm { padding: 9px 20px; font-size: 0.875rem; }
.btn-lg { padding: 16px 36px; font-size: 1.0625rem; }
.btn-light {
  background: #fff;
  color: var(--color-primary);
}
.btn-light:hover {
  background: #F3F0FF;
  box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  background:
    radial-gradient(600px 400px at 85% 20%, rgba(109,40,217,0.35), transparent 60%),
    radial-gradient(500px 300px at 10% 90%, rgba(163,230,53,0.12), transparent 60%),
    var(--color-dark);
  color: #fff;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
  min-height: 640px;
  padding: 72px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(109,40,217,0.22);
  border: 1px solid rgba(109,40,217,0.35);
  color: #D8C9F8;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.hero h1 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 1.125rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.72);
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-buttons .btn { margin-bottom: 0; }

.hero-visual {
  position: relative;
}
.hero-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.15);
  box-shadow: 0 24px 48px rgba(0,0,0,0.35);
}
.hero-float-card {
  position: absolute;
  right: -12px;
  bottom: 24px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 14px;
  padding: 14px 20px;
  color: #fff;
  transform: rotate(-2deg);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  gap: 12px;
}
.float-stars { color: #F59E0B; font-size: 0.875rem; letter-spacing: 2px; }
.float-number { font-size: 1.75rem; font-weight: 800; line-height: 1; }
.float-label { font-size: 0.8125rem; color: rgba(255,255,255,0.7); margin-top: 2px; }

/* ===== Pain Points ===== */
.pain-section { background: var(--color-bg); }
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.pain-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.pain-number {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-soft);
  line-height: 1;
}
.pain-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary-soft);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 20px;
}
.pain-card h3 {
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
}
.pain-card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ===== Solution ===== */
.solution-section {
  background: var(--color-dark);
  color: #fff;
}
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}
.solution-left h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.solution-left p {
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 28px;
}
.solution-list {
  display: flex;
  flex-direction: column;
}
.solution-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.solution-list li:last-child { border-bottom: none; }
.solution-check {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 4px;
}
.solution-list h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.solution-list p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}
.solution-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  display: block;
  height: 240px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition), filter var(--transition);
}
.gallery-item:hover img { transform: scale(1.03); filter: brightness(1.1); }
.gallery-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px;
  background: linear-gradient(to top, rgba(20,20,27,0.9), transparent);
  color: #fff;
}
.gallery-title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
}
.gallery-count {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.7);
}

/* ===== Stats ===== */
.stats-section { background: var(--color-bg); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item { text-align: left; }
.stat-number {
  font-size: clamp(2.5rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1;
  color: var(--color-text);
  margin-bottom: 10px;
  font-family: 'DIN Alternate', 'PingFang SC', sans-serif;
}
.stat-number span { color: var(--color-primary); }
.stat-divider {
  width: 28px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-bottom: 12px;
}
.stat-label {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* ===== Testimonials ===== */
.testimonials-section { background: #EFEDE8; }
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.testimonial-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.testimonial-quote-mark {
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary-soft);
  line-height: 1;
}
.testimonial-stars {
  color: #F59E0B;
  font-size: 0.9375rem;
  letter-spacing: 3px;
  margin-bottom: 14px;
}
.testimonial-card blockquote {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 20px;
  border: none;
  padding: 0;
}
.testimonial-card blockquote p { font-size: 0.9375rem; }
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}
.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial-name { font-size: 0.9375rem; font-weight: 600; line-height: 1.3; }
.testimonial-role { font-size: 0.8125rem; color: var(--color-text-secondary); }

/* ===== News / CMS ===== */
.news-section { background: var(--color-bg); }
.news-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: start;
}
.news-featured-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.news-featured-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.news-featured-thumb {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  margin-bottom: 16px;
}
.news-featured-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  line-height: 1.5;
}
.badge-outer {
  position: absolute;
  top: 12px;
  left: 12px;
}
.badge-soft {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}
.news-featured-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.news-featured-card:hover h3 { color: var(--color-primary); }
.news-featured-card > p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.news-meta .arrow {
  font-size: 1.125rem;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.news-featured-card:hover .arrow { transform: translateX(3px); }

.news-list { display: flex; flex-direction: column; }
.news-list-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}
.news-list-item:first-child { padding-top: 0; }
.news-list-item:hover { background: rgba(237,233,254,0.4); }
.news-list-item h4 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  transition: color var(--transition);
}
.news-list-item:hover h4 { color: var(--color-primary); }
.news-list-item p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-list-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.news-list-meta .arrow {
  color: var(--color-primary);
  transition: transform var(--transition);
}
.news-list-item:hover .arrow { transform: translateX(3px); }

.empty-state {
  grid-column: 1 / -1;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-card);
  padding: 48px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1rem;
}
.empty-state .empty-icon {
  font-size: 2.5rem;
  color: var(--color-border);
  margin-bottom: 12px;
}

/* ===== FAQ ===== */
.faq-section { background: var(--color-surface); }
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  padding: 20px 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition);
  gap: 12px;
}
.faq-question:hover { color: var(--color-primary); }
.faq-toggle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 600;
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition);
}
.faq-item[open] .faq-toggle { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-answer {
  padding: 0 4px 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* ===== CTA ===== */
.cta-section { padding: 32px 0 96px; background: var(--color-bg); }
.cta-banner {
  background: linear-gradient(135deg, #6D28D9 0%, #4C1D95 60%, #3B0764 100%);
  border-radius: 24px;
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  color: #fff;
  box-shadow: 0 20px 48px rgba(76,29,149,0.3);
}
.cta-banner h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 8px;
}
.cta-banner p {
  color: rgba(255,255,255,0.75);
  font-size: 1rem;
  max-width: 600px;
}
.cta-buttons { display: flex; flex-wrap: wrap; gap: 12px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark);
  color: #fff;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 40px;
  padding: 64px 0 40px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand .brand-text { color: #fff; }
.footer-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 360px;
  margin-top: 12px;
}
.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 18px;
  color: #fff;
}
.footer-nav-links { display: flex; flex-direction: column; gap: 10px; }
.footer-nav-links a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
  position: relative;
  width: fit-content;
}
.footer-nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.footer-nav-links a:hover { color: var(--color-accent); }
.footer-nav-links a:hover::after { transform: scaleX(1); }
.footer-contact p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-bottom: 8px;
}
.footer-legal {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-bottom {
  background: var(--color-dark-2);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; min-height: auto; padding: 64px 24px; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-grid { grid-template-columns: 1fr; }
  .solution-gallery { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card-hover);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-link { width: 100%; padding: 12px 0; font-size: 1rem; }
  .nav-link::after { display: none; }
  .search-box { display: none; }
  .header-actions { gap: 8px; }
  .section { padding: 72px 0; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero-inner { padding: 48px 16px; }
  .hero h1 { font-size: clamp(1.875rem, 5vw, 2.25rem); }
  .hero-sub { font-size: 1rem; }
  .hero-float-card { right: 8px; bottom: 12px; padding: 10px 14px; }
  .pain-grid { grid-template-columns: 1fr; }
  .solution-gallery { grid-template-columns: 1fr; }
  .stats-grid { gap: 24px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; margin-bottom: 32px; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
  .cta-buttons { width: 100%; }
  .cta-buttons .btn { flex: 1; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 24px; }
  .header-inner { padding: 0 16px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-text { font-size: 1rem; }
  .btn { padding: 12px 20px; font-size: 0.9375rem; }
  .hero-buttons { flex-direction: column; width: 100%; }
  .hero-buttons .btn { width: 100%; }
  .hero-float-card { position: static; margin-top: 16px; transform: none; width: fit-content; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stat-number { font-size: 2rem; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .news-featured-card { padding: 12px; }
  .news-featured-card h3 { font-size: 1.0625rem; }
}

/* roulang page: article */
:root {
  --color-primary: #6D28D9;
  --color-primary-hover: #5B21B6;
  --color-primary-soft: #EDE9FE;
  --color-accent: #A3E635;
  --color-dark: #14141B;
  --color-dark-2: #1E1E28;
  --color-bg: #F7F6F2;
  --color-surface: #FFFFFF;
  --color-text: #23232B;
  --color-text-secondary: #6B6B76;
  --color-border: #E8E6E0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(21,21,28,0.04), 0 4px 12px rgba(21,21,28,0.06);
  --shadow-lg: 0 8px 24px rgba(21,21,28,0.10);
  --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-hover);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 2px rgba(21,21,28,0.04), 0 2px 12px rgba(21,21,28,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F4F3EF;
  border-radius: var(--radius-pill);
  padding: 0 16px;
  height: 40px;
  width: 220px;
  border: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.search-box svg {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.search-box input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  width: 100%;
  color: var(--color-text);
}

.search-box input::placeholder {
  color: var(--color-text-secondary);
}

.search-box:focus-within {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(109,40,217,0.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  text-decoration: none;
  line-height: 1.2;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible,
.nav-link:focus-visible,
.brand:focus-visible,
.related-card:focus-visible {
  outline: 3px solid rgba(109,40,217,0.35);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  box-shadow: 0 4px 16px rgba(109,40,217,0.30);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}

.btn-white {
  background: var(--color-surface);
  color: var(--color-primary);
}

.btn-white:hover {
  background: #F3F0FF;
  color: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(255,255,255,0.25);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* 面包屑 */
.breadcrumb-bar {
  padding: 28px 0 8px;
  background: var(--color-bg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: #C9C7C1;
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
  max-width: 360px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 文章主体 */
.article-main {
  padding: 32px 0 72px;
  background: var(--color-bg);
}

.article-layout {
  max-width: 860px;
  margin: 0 auto;
}

.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 48px;
}

.article-head {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 32px;
}

.article-cat-chip a {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  margin-bottom: 18px;
  transition: background var(--transition);
}

.article-cat-chip a:hover {
  background: #DDD6FE;
}

.article-head h1 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.meta-sep {
  color: #D1CEC7;
}

/* 正文 */
.article-content {
  max-width: 740px;
  margin: 0 auto;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--color-text);
}

.article-content > * {
  margin-bottom: 1.5em;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  border-left: 4px solid var(--color-primary);
  padding-left: 16px;
  margin-top: 48px;
  margin-bottom: 20px;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  margin-top: 32px;
  margin-bottom: 16px;
}

.article-content p {
  margin-bottom: 1.5em;
}

.article-content ul,
.article-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.5em;
}

.article-content li {
  margin-bottom: 0.6em;
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: normal;
  color: var(--color-text);
  margin: 28px 0;
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 28px 0;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: -20px;
  margin-bottom: 24px;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.article-content table th,
.article-content table td {
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
}

.article-content table th {
  background: var(--color-primary-soft);
  font-weight: 600;
  color: var(--color-text);
}

/* 文章底部 */
.article-footer {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.tag {
  display: inline-block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 13px;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.back-link:hover {
  color: var(--color-primary-hover);
}

/* 内容未找到 */
.article-not-found {
  text-align: center;
  padding: 80px 24px;
}

.article-not-found h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
}

.article-not-found p {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.not-found-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 700;
  margin: 0 auto 24px;
}

/* 相关阅读 */
.related-section {
  padding: 72px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.section-link:hover {
  color: var(--color-primary-hover);
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.related-card {
  display: flex;
  gap: 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-decoration: none;
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow var(--transition), border-color var(--transition);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-soft);
}

.related-img {
  width: 160px;
  height: 112px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-primary-soft);
}

.related-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover .related-body h3 {
  color: var(--color-primary);
}

.related-date {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: auto;
}

/* CTA 区块 */
.cta-section {
  padding: 72px 0;
  background: var(--color-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(109,40,217,0.45), transparent 70%);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(163,230,53,0.20), transparent 70%);
  pointer-events: none;
}

.cta-banner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-banner h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.7);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .brand-icon {
  background: var(--color-accent);
  color: var(--color-dark);
}

.footer-brand .brand-text {
  color: #fff;
  font-size: 18px;
  font-weight: 800;
}

.footer-desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
  max-width: 340px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-nav-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav-links a {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav-links a:hover {
  color: var(--color-accent);
}

.footer-contact p,
.footer-legal p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
}

.footer-legal {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.10);
}

.footer-bottom {
  background: var(--color-dark-2);
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* 响应式 */
@media (max-width: 1024px) {
  .search-box {
    width: 180px;
  }

  .nav-link {
    padding: 8px 10px;
    font-size: 14px;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: auto;
    min-height: 64px;
  }

  .header-inner {
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
    padding: 8px 16px;
    position: relative;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    z-index: 99;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 8px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    background: var(--color-primary-soft);
  }

  .nav-toggle {
    display: flex;
  }

  .header-actions {
    gap: 8px;
    margin-left: auto;
  }

  .search-box {
    display: none;
  }

  .header-actions .btn-sm {
    display: none;
  }

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

  .article-content {
    font-size: 16px;
  }

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

  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 32px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .breadcrumb-current {
    max-width: 200px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .article-card {
    padding: 20px 16px;
    border-radius: var(--radius-md);
  }

  .article-head h1 {
    font-size: 1.4rem;
  }

  .related-card {
    flex-direction: column;
  }

  .related-img {
    width: 100%;
    height: 160px;
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category1 */
:root {
  --color-primary: #6D28D9;
  --color-primary-hover: #5B21B6;
  --color-primary-soft: #EDE9FE;
  --color-accent: #A3E635;
  --color-dark: #14141B;
  --color-dark-2: #1E1E28;
  --color-bg: #F7F6F2;
  --color-surface: #FFFFFF;
  --color-text: #23232B;
  --color-text-secondary: #6B6B76;
  --color-border: #E8E6E0;
  --color-success: #16A34A;
  --color-danger: #DC2626;
  --color-star: #F59E0B;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-img: 12px;
  --shadow-card: 0 1px 2px rgba(21,21,28,0.04), 0 4px 12px rgba(21,21,28,0.06);
  --shadow-hover: 0 8px 24px rgba(21,21,28,0.10);
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-primary-hover);
}

input,
button {
  font-family: inherit;
  font-size: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid #EEE;
  box-shadow: 0 1px 2px rgba(21,21,28,0.04), 0 2px 12px rgba(21,21,28,0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  position: relative;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F4F3EF;
  border-radius: 999px;
  padding: 8px 16px;
  width: 240px;
  height: 40px;
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
  border: 1px solid transparent;
}

.search-box:focus-within {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.12);
}

.search-box svg {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 14px;
  color: var(--color-text);
}

.search-box input::placeholder {
  color: var(--color-text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(109, 40, 217, 0.24);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(109, 40, 217, 0.28);
  outline-offset: 2px;
}

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(21, 21, 28, 0.06);
}

.btn-ghost-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-light-purple {
  background: #fff;
  color: var(--color-primary);
}

.btn-light-purple:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
  border-radius: 10px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  padding: 0 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  background: var(--color-dark);
  background-image: linear-gradient(rgba(20, 20, 27, 0.82), rgba(20, 20, 27, 0.90)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 96px 0 88px;
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(109, 40, 217, 0.45), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(163, 230, 53, 0.18), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}

.page-hero h1 {
  font-size: clamp(2rem, 3.4vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 820px;
}

.page-hero h1 span {
  color: var(--color-accent);
}

.hero-lead {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.75;
  max-width: 680px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.hero-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

/* ===== Card Common ===== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 16px;
}

.section-header.light h2 {
  color: #fff;
}

.section-header.light p {
  color: rgba(255, 255, 255, 0.7);
}

/* ===== Eval List ===== */
.eval-list-section {
  background: var(--color-bg);
}

.eval-card {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 32px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.eval-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.eval-card.reverse {
  flex-direction: row-reverse;
}

.eval-img {
  flex: 0 0 38%;
  border-radius: var(--radius-img);
  overflow: hidden;
}

.eval-img img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}

.eval-card:hover .eval-img img {
  transform: scale(1.03);
}

.eval-body {
  flex: 1;
}

.eval-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.eval-score {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 56px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.eval-score small {
  font-size: 12px;
  font-weight: 500;
  opacity: 0.85;
  margin-left: 2px;
}

.eval-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 999px;
  padding: 4px 12px;
}

.eval-date {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.eval-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--color-text);
}

.eval-body p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}

.eval-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.eval-link svg {
  transition: transform 0.2s var(--ease);
}

.eval-link:hover svg {
  transform: translateX(4px);
}

/* ===== Standards Section ===== */
.standards-section {
  background: var(--color-dark);
  color: #fff;
}

.standards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.standards-text .section-header {
  text-align: left;
  margin: 0 0 32px;
}

.standards-text .section-header h2 {
  color: #fff;
}

.standards-text .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

.standards-list {
  display: grid;
  gap: 24px;
}

.standard-item {
  display: grid;
  gap: 8px;
}

.standard-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
}

.standard-head .name {
  font-weight: 600;
  color: #fff;
}

.standard-head .pct {
  color: var(--color-accent);
  font-weight: 700;
}

.standard-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.standard-bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.standards-note {
  margin-top: 32px;
  padding: 20px 24px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.75;
}

.standards-note strong {
  color: var(--color-accent);
}

.standards-visual {
  display: grid;
  gap: 20px;
}

.standards-visual .s-card {
  background: var(--color-dark-2);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.s-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(109, 40, 217, 0.28);
  color: var(--color-accent);
}

.s-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #fff;
}

.s-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
}

/* ===== Ranking ===== */
.ranking-section {
  background: var(--color-surface);
}

.rank-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 24px 28px;
  transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

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

.rank-medal {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  font-size: 22px;
  flex-shrink: 0;
}

.rank-medal.gold {
  background: #FEF3C7;
  color: #B45309;
}

.rank-medal.silver {
  background: #E5E7EB;
  color: #4B5563;
}

.rank-medal.bronze {
  background: #FDE68A;
  color: #92400E;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.rank-info p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.rank-score {
  text-align: right;
  flex-shrink: 0;
}

.rank-score .score-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.rank-score .score-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ===== Topics ===== */
.topics-section {
  background: var(--color-bg);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.topic-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.topic-card img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.topic-body {
  padding: 20px;
}

.topic-body h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.topic-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
}

.topic-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.topic-link svg {
  transition: transform 0.2s var(--ease);
}

.topic-link:hover svg {
  transform: translateX(3px);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--color-surface);
}

.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 24px 4px;
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  padding: 0;
  transition: color 0.2s var(--ease);
}

.faq-q:hover {
  color: var(--color-primary);
}

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-primary);
  border-radius: 2px;
}

.faq-icon::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
  transition: transform 0.2s var(--ease);
}

.faq-item.open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s var(--ease);
}

.faq-a-inner {
  padding-top: 16px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(120deg, #4C1D95 0%, #6D28D9 55%, #5B21B6 100%);
  padding: 88px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -40px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(163, 230, 53, 0.28), transparent 70%);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  margin-bottom: 32px;
}

.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 64px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.footer-brand .brand-text {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-nav-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.footer-nav-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-contact p,
.footer-legal p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 8px;
}

.footer-legal {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom {
  background: var(--color-dark-2);
  padding: 20px 0;
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  section {
    padding: 72px 0;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 6px;
    box-shadow: 0 12px 24px rgba(21, 21, 28, 0.08);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), visibility 0.3s;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 16px;
  }

  .nav-link.active::after {
    left: 16px;
    right: auto;
    width: 28px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .search-box {
    width: 180px;
  }

  .eval-card,
  .eval-card.reverse {
    flex-direction: column;
    gap: 24px;
  }

  .eval-img {
    flex: none;
    width: 100%;
  }

  .eval-img img {
    height: 220px;
  }

  .standards-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 64px 0;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat .num {
    font-size: 1.8rem;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .rank-item {
    flex-wrap: wrap;
    gap: 16px;
  }

  .rank-score {
    width: 100%;
    text-align: left;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
  }

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

  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  section {
    padding: 56px 0;
  }

  .header-actions .search-box {
    display: none;
  }

  .page-hero h1 {
    font-size: 1.7rem;
  }

  .hero-stats {
    gap: 16px;
    justify-content: space-between;
  }

  .hero-stat .num {
    font-size: 1.5rem;
  }

  .eval-card {
    padding: 16px;
  }

  .eval-body h3 {
    font-size: 1.2rem;
  }

  .cta-btns {
    flex-direction: column;
  }

  .cta-btns .btn {
    width: 100%;
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
}

/* roulang page: category2 */
:root {
            --color-primary: #6D28D9;
            --color-primary-hover: #5B21B6;
            --color-primary-soft: #EDE9FE;
            --color-accent: #A3E635;
            --color-dark: #14141B;
            --color-dark-2: #1E1E28;
            --color-bg: #F7F6F2;
            --color-surface: #FFFFFF;
            --color-text: #23232B;
            --color-text-secondary: #6B6B76;
            --color-border: #E8E6E0;
            --color-success: #16A34A;
            --color-danger: #DC2626;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 1px 2px rgba(21, 21, 28, 0.04), 0 4px 12px rgba(21, 21, 28, 0.06);
            --shadow-hover: 0 8px 24px rgba(21, 21, 28, 0.10);
            --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 1px 2px rgba(21, 21, 28, 0.04), 0 2px 12px rgba(21, 21, 28, 0.05);
            border-bottom: 1px solid #EEE;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 32px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            letter-spacing: 0.03em;
            user-select: none;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--color-text);
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 10px 2px;
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: color var(--transition);
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0);
            transition: all var(--transition);
        }

        .nav-link:hover {
            color: var(--color-text);
        }

        .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #F4F3EF;
            border-radius: var(--radius-pill);
            padding: 0 16px;
            height: 40px;
            width: 220px;
            transition: background var(--transition), box-shadow var(--transition);
        }

        .search-box:focus-within {
            background: #fff;
            box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.12);
            border: 1px solid var(--color-primary);
        }

        .search-box svg {
            color: var(--color-text-secondary);
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 100%;
            color: var(--color-text);
        }

        .search-box input::placeholder {
            color: #A09FA6;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border: none;
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 4px 16px rgba(109, 40, 217, 0.3);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(109, 40, 217, 0.3);
            outline-offset: 2px;
        }

        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
        }

        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .btn-light {
            background: #fff;
            color: var(--color-primary);
        }

        .btn-light:hover {
            background: var(--color-primary-soft);
        }

        .btn-ghost-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: #F4F3EF;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
        }

        .nav-toggle span {
            display: block;
            width: 16px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background: var(--color-dark);
            padding: 88px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: rgba(109, 40, 217, 0.28);
            filter: blur(80px);
            top: -200px;
            right: -100px;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(163, 230, 53, 0.10);
            filter: blur(60px);
            bottom: -120px;
            left: 10%;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.9);
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }

        .banner-tag .pulse {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(163, 230, 53, 0.6); }
            70% { box-shadow: 0 0 0 6px rgba(163, 230, 53, 0); }
            100% { box-shadow: 0 0 0 0 rgba(163, 230, 53, 0); }
        }

        .page-banner h1 {
            font-size: clamp(2rem, 3.6vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .page-banner h1 .accent {
            color: var(--color-accent);
        }

        .page-banner .lead {
            font-size: 1.125rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
        }

        /* ===== Sections ===== */
        .section {
            padding: 96px 0;
        }

        .section-light {
            background: var(--color-bg);
        }

        .section-white {
            background: var(--color-surface);
        }

        .section-dark {
            background: var(--color-dark);
        }

        .section-head {
            margin-bottom: 48px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 2.6vw, 2.5rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--color-text);
        }

        .section-head .sub {
            color: var(--color-text-secondary);
            margin-top: 12px;
            max-width: 620px;
            font-size: 15px;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-dark .section-head .sub {
            color: rgba(255, 255, 255, 0.65);
        }

        .headline-zone {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 24px;
        }

        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .feature-card-main {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            min-height: 400px;
        }

        .feature-card-main .card-img {
            position: relative;
            min-height: 100%;
            background: var(--color-dark-2);
        }

        .feature-card-main .card-img img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-card-main .card-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: var(--radius-pill);
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
            align-self: flex-start;
        }

        .card-title {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
            margin: 16px 0 12px;
            color: var(--color-text);
            transition: color var(--transition);
        }

        .feature-card:hover .card-title {
            color: var(--color-primary);
        }

        .feature-card-main .card-title {
            font-size: 24px;
            line-height: 1.35;
        }

        .card-excerpt {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .card-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #C9C7C0;
            flex-shrink: 0;
        }

        .small-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .small-card {
            display: flex;
            flex-direction: column;
            overflow: hidden;
            height: 100%;
        }

        .small-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: var(--color-dark-2);
        }

        .small-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .small-card:hover .card-img img {
            transform: scale(1.04);
        }

        .small-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .small-card .card-title {
            font-size: 18px;
            margin: 12px 0 8px;
        }

        .small-card .card-excerpt {
            -webkit-line-clamp: 2;
        }

        .small-card .card-meta {
            margin-top: auto;
            padding-top: 16px;
        }

        /* ===== Timeline ===== */
        .timeline {
            max-width: 920px;
            margin: 0 auto;
        }

        .timeline-item {
            display: grid;
            grid-template-columns: 150px 1fr;
            gap: 40px;
            position: relative;
            padding-bottom: 44px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item .tl-date {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            padding-top: 4px;
            text-align: right;
            letter-spacing: 0.02em;
        }

        .timeline-item .tl-content {
            border-left: 2px solid #E4E0F5;
            padding-left: 32px;
            position: relative;
        }

        .timeline-item .tl-content::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(109, 40, 217, 0.25);
        }

        .tl-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 2px 12px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .timeline-item h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .timeline-item h3 a {
            transition: color var(--transition);
        }

        .timeline-item h3 a:hover {
            color: var(--color-primary);
        }

        .timeline-item p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }

        /* ===== Data Zone ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 48px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: clamp(2.5rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .stat-number em {
            color: var(--color-accent);
            font-style: normal;
        }

        .stat-line {
            width: 32px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 2px;
            margin-top: 16px;
        }

        .stat-label {
            margin-top: 12px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            line-height: 1.6;
            max-width: 220px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            border-radius: 12px;
            padding: 24px 28px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            gap: 16px;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            padding: 0;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            transition: transform var(--transition);
            font-weight: 400;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-a p {
            padding-top: 16px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
        }

        .cta-box {
            background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 50%, #5B21B6 100%);
            border-radius: 24px;
            padding: 72px 64px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(163, 230, 53, 0.15);
            filter: blur(80px);
            top: -120px;
            right: -80px;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            filter: blur(60px);
            bottom: -100px;
            left: -60px;
        }

        .cta-box>* {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 36px;
            font-size: 16px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 64px;
            padding: 72px 0 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-nav-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-nav-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
            width: fit-content;
        }

        .footer-nav-links a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 8px;
        }

        .footer-legal {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-legal p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }

        .footer-bottom {
            background: var(--color-dark-2);
            padding: 20px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }

            .search-box {
                width: 180px;
            }

            .feature-card-main {
                grid-template-columns: 1fr 1fr;
            }

            .feature-card-main .card-title {
                font-size: 20px;
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .stats-grid {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 72px 0;
            }

            .header-inner {
                height: 64px;
                gap: 16px;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                transform: translateY(-130%);
                transition: transform 0.3s ease;
                z-index: 99;
            }

            .nav-links.open {
                transform: translateY(0);
            }

            .nav-link {
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid #F0EFEA;
                color: var(--color-text);
            }

            .nav-link::after {
                display: none;
            }

            .nav-link.active {
                color: var(--color-primary);
                font-weight: 700;
            }

            .search-box {
                display: none;
            }

            .header-actions .btn-sm {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 64px 0 56px;
            }

            .page-banner h1 {
                font-size: clamp(1.75rem, 6vw, 2.25rem);
            }

            .page-banner .lead {
                font-size: 1rem;
            }

            .headline-zone {
                grid-template-columns: 1fr;
            }

            .feature-card-main {
                grid-template-columns: 1fr;
                min-height: auto;
            }

            .feature-card-main .card-img {
                height: 220px;
            }

            .feature-card-main .card-img img {
                position: static;
            }

            .small-cards {
                grid-template-columns: 1fr;
            }

            .timeline-item {
                grid-template-columns: 1fr;
                gap: 4px;
            }

            .timeline-item .tl-date {
                text-align: left;
                padding-top: 0;
                margin-bottom: 8px;
            }

            .timeline-item .tl-content {
                border-left: none;
                padding-left: 0;
                margin-top: 4px;
            }

            .timeline-item .tl-content::before {
                display: none;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }

            .cta-box {
                padding: 48px 28px;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 40px;
                padding: 56px 0 32px;
            }

            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stat-number {
                font-size: 2.2rem;
            }

            .feature-card-main .card-body {
                padding: 24px;
            }

            .small-card .card-body {
                padding: 20px;
            }

            .faq-item {
                padding: 20px;
            }

            .cta-section {
                padding: 56px 0;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root {
  --color-primary: #6D28D9;
  --color-primary-hover: #5B21B6;
  --color-primary-soft: #EDE9FE;
  --color-accent: #A3E635;
  --color-dark: #14141B;
  --color-dark-2: #1E1E28;
  --color-bg: #F7F6F2;
  --color-surface: #FFFFFF;
  --color-text: #23232B;
  --color-text-secondary: #6B6B76;
  --color-border: #E8E6E0;
  --color-star: #F59E0B;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-image: 12px;
  --shadow-card: 0 1px 2px rgba(21,21,28,0.04), 0 4px 12px rgba(21,21,28,0.06);
  --shadow-card-hover: 0 8px 24px rgba(21,21,28,0.10);
  --shadow-header: 0 1px 2px rgba(21,21,28,0.04), 0 2px 12px rgba(21,21,28,0.05);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);
}

/* ========== Reset 与基础 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); background: var(--color-bg); color: var(--color-text); line-height: 1.75; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; color: var(--color-text); }
h2 { font-size: clamp(1.75rem, 2.6vw, 2.5rem); font-weight: 700; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; font-weight: 600; }

/* ========== 容器 ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== 页面通用区块间距 ========== */
.section { padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .section-sub { display: inline-flex; align-items: center; gap: 6px; background: var(--color-primary-soft); color: var(--color-primary); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 999px; margin-bottom: 16px; }
.section-head p { color: var(--color-text-secondary); font-size: 1.0625rem; margin-top: 14px; }

/* ========== Header / 导航 ========== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.97); border-bottom: 1px solid #EEE; box-shadow: var(--shadow-header); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-icon { width: 36px; height: 36px; border-radius: 10px; background: var(--color-primary); color: #fff; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; letter-spacing: 0; }
.brand-text { font-size: 18px; font-weight: 800; color: var(--color-text); }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-link { font-size: 15px; color: var(--color-text-secondary); font-weight: 500; padding: 10px 0; position: relative; transition: color var(--transition); }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: 2px; width: 100%; height: 2px; background: var(--color-primary); border-radius: 2px; transform: scaleX(0); transform-origin: left; transition: transform var(--transition); }
.nav-link:hover { color: var(--color-text); }
.nav-link.active { color: var(--color-primary); font-weight: 600; }
.nav-link.active::after, .nav-link:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.search-box { display: flex; align-items: center; gap: 8px; background: #F4F3EF; border-radius: 999px; padding: 0 16px; height: 40px; width: 240px; transition: background var(--transition), box-shadow var(--transition), outline-color var(--transition); outline: 1px solid transparent; }
.search-box:focus-within { background: #fff; outline-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(109,40,217,0.12); }
.search-box svg { color: var(--color-text-secondary); flex-shrink: 0; }
.search-box input { border: none; outline: none; background: transparent; width: 100%; font-size: 14px; color: var(--color-text); }
.search-box input::placeholder { color: #9B9BA5; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--color-border); border-radius: 10px; background: #fff; cursor: pointer; padding: 0 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--color-text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }

/* ========== 按钮 ========== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: var(--radius-btn); padding: 14px 28px; font-size: 16px; font-weight: 600; line-height: 1.2; cursor: pointer; border: 1px solid transparent; transition: all var(--transition); }
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: 3px solid rgba(109,40,217,0.35); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 6px 18px rgba(109,40,217,0.35); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.85); }
.btn-sm { padding: 9px 20px; font-size: 14px; border-radius: 10px; }
.btn-cta { background: #fff; color: var(--color-primary); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.btn-cta:hover { background: #F3EEFF; box-shadow: 0 10px 30px rgba(0,0,0,0.22); transform: translateY(-2px); }

/* ========== 分类页 Hero / 页头条 ========== */
.category-hero { padding: 84px 0 80px; color: #fff; position: relative; overflow: hidden; background: radial-gradient(700px circle at 82% -10%, rgba(109,40,217,0.55), transparent 55%), radial-gradient(520px circle at 6% 110%, rgba(163,230,53,0.2), transparent 45%), linear-gradient(135deg, rgba(20,20,27,0.94) 0%, rgba(20,20,27,0.85) 55%, rgba(30,30,40,0.9) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat; }
.category-hero-inner { max-width: 840px; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255,255,255,0.75); transition: color var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }
.category-hero h1 { font-size: clamp(2.25rem, 4vw, 3.2rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; color: #fff; margin-bottom: 20px; }
.hero-mark { display: inline-block; background: linear-gradient(120deg, var(--color-accent), #D9F99D); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { font-size: 1.125rem; line-height: 1.75; color: rgba(255,255,255,0.85); max-width: 640px; margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* ========== 四步时间轴 ========== */
.steps-section { background: var(--color-bg); padding: 96px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; margin-top: 16px; }
.steps-grid::before { content: ''; position: absolute; top: 40px; left: 7%; right: 7%; border-top: 2px dashed #D5CDE8; z-index: 0; }
.step-card { position: relative; z-index: 1; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 32px 26px 30px; box-shadow: var(--shadow-card); transition: box-shadow var(--transition), transform var(--transition); }
.step-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.step-icon { position: relative; width: 68px; height: 68px; border-radius: 18px; background: var(--color-primary-soft); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-bottom: 22px; }
.step-icon svg { width: 28px; height: 28px; }
.step-num { position: absolute; top: -8px; right: -8px; width: 30px; height: 30px; border-radius: 50%; background: var(--color-primary); color: #fff; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 10px rgba(109,40,217,0.3); }
.step-card h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: var(--color-text-secondary); font-size: 0.9375rem; line-height: 1.7; }

/* ========== 提示条 / 操作说明 ========== */
.tips-section { background: var(--color-surface); padding: 96px 0; }
.tips-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.tip-card { border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 28px 24px; background: var(--color-surface); position: relative; overflow: hidden; transition: box-shadow var(--transition), transform var(--transition); }
.tip-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-3px); }
.tip-card::before { content: ''; position: absolute; left: 0; top: 0; width: 4px; height: 100%; background: linear-gradient(180deg, var(--color-primary), var(--color-accent)); opacity: 0.7; }
.tip-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--color-primary-soft); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.tip-icon svg { width: 22px; height: 22px; }
.tip-card h3 { font-size: 1.0625rem; font-weight: 700; margin-bottom: 8px; }
.tip-card p { color: var(--color-text-secondary); font-size: 0.9rem; line-height: 1.7; }

/* ========== 内容组织（深色特性区） ========== */
.features-section { background: var(--color-dark); color: #fff; padding: 96px 0; position: relative; overflow: hidden; }
.features-section::before { content: ''; position: absolute; width: 600px; height: 600px; right: -160px; top: -160px; border-radius: 50%; background: rgba(109,40,217,0.35); filter: blur(80px); pointer-events: none; }
.features-section::after { content: ''; position: absolute; width: 300px; height: 300px; left: 5%; bottom: -120px; border-radius: 50%; background: rgba(163,230,53,0.12); filter: blur(60px); pointer-events: none; }
.features-wrap { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; position: relative; z-index: 1; }
.feature-media { border-radius: 20px; overflow: hidden; box-shadow: 0 16px 48px rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.12); }
.feature-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform 0.5s ease; }
.feature-media:hover img { transform: scale(1.03); }
.features-section h2 { color: #fff; margin-bottom: 16px; }
.feature-lead { color: rgba(255,255,255,0.65); font-size: 1.0625rem; line-height: 1.75; margin-bottom: 36px; }
.feature-list { display: flex; flex-direction: column; gap: 26px; }
.feature-item { display: flex; gap: 16px; align-items: flex-start; }
.feature-icon { width: 46px; height: 46px; border-radius: 12px; background: rgba(109,40,217,0.28); color: var(--color-accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.feature-icon svg { width: 22px; height: 22px; }
.feature-item h3 { color: #fff; font-size: 1.0625rem; font-weight: 700; margin-bottom: 6px; }
.feature-item p { color: rgba(255,255,255,0.65); font-size: 0.9375rem; line-height: 1.7; }

/* ========== FAQ 手风琴 ========== */
.faq-section { background: var(--color-bg); padding: 96px 0; }
.faq-list { max-width: 900px; margin: 0 auto; }
.faq-item { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 14px; margin-bottom: 12px; overflow: hidden; transition: box-shadow var(--transition), border-color var(--transition); }
.faq-item.open { border-color: var(--color-primary); box-shadow: 0 4px 16px rgba(109,40,217,0.1); }
.faq-q { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 28px; cursor: pointer; font-size: 1.0625rem; font-weight: 600; color: var(--color-text); user-select: none; }
.faq-q::after { content: '+'; font-size: 26px; font-weight: 300; color: var(--color-primary); flex-shrink: 0; transition: transform 0.3s ease; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 28px 24px; color: var(--color-text-secondary); font-size: 0.9375rem; line-height: 1.75; }

/* ========== CTA 区 ========== */
.cta-section { background: linear-gradient(135deg, var(--color-primary) 0%, #5B21B6 55%, #7C3AED 100%); padding: 80px 0; position: relative; overflow: hidden; text-align: center; }
.cta-section::before { content: ''; position: absolute; width: 400px; height: 400px; left: -100px; bottom: -160px; border-radius: 50%; background: rgba(255,255,255,0.08); pointer-events: none; }
.cta-section::after { content: ''; position: absolute; width: 260px; height: 260px; right: -60px; top: -100px; border-radius: 50%; background: rgba(163,230,53,0.12); pointer-events: none; }
.cta-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: clamp(1.75rem, 2.6vw, 2.5rem); margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,0.85); font-size: 1.0625rem; margin-bottom: 32px; }

/* ========== Footer ========== */
.site-footer { background: var(--color-dark); color: rgba(255,255,255,0.7); }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1.5fr; gap: 48px; padding: 64px 0 48px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand .brand-icon { background: var(--color-primary); color: #fff; }
.footer-brand .brand-text { color: #fff; font-size: 18px; font-weight: 800; }
.footer-desc { color: rgba(255,255,255,0.6); font-size: 0.9375rem; line-height: 1.8; max-width: 360px; }
.footer-col h4 { color: #fff; font-size: 1.0625rem; font-weight: 600; margin-bottom: 16px; }
.footer-nav-links { display: flex; flex-direction: column; gap: 10px; }
.footer-nav-links a { color: rgba(255,255,255,0.7); font-size: 0.9375rem; transition: color var(--transition); }
.footer-nav-links a:hover { color: var(--color-accent); }
.footer-contact p, .footer-legal p { font-size: 0.875rem; line-height: 1.7; color: rgba(255,255,255,0.5); margin-bottom: 8px; }
.footer-legal { margin-top: 16px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; }
.footer-legal p { margin-bottom: 4px; color: rgba(255,255,255,0.4); }
.footer-bottom { background: var(--color-dark-2); padding: 20px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom span { color: rgba(255,255,255,0.45); font-size: 0.875rem; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .section, .steps-section, .tips-section, .features-section, .faq-section { padding: 72px 0; }
  .nav-links { position: fixed; top: 72px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-card-hover); padding: 20px 24px; flex-direction: column; align-items: stretch; gap: 12px; transform: translateY(-16px); opacity: 0; pointer-events: none; transition: transform 0.3s ease, opacity 0.3s ease; z-index: 99; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links .search-box { width: 100%; margin-bottom: 8px; }
  .nav-links .btn-sm { width: 100%; }
  .nav-link { font-size: 16px; padding: 12px 8px; border-bottom: 1px solid #F0EFEC; }
  .nav-link::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-actions .search-box { display: none; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .steps-grid::before { display: none; }
  .tips-grid { grid-template-columns: repeat(2, 1fr); }
  .features-wrap { grid-template-columns: 1fr; gap: 40px; }
  .feature-media img { aspect-ratio: 16/10; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section, .steps-section, .tips-section, .features-section, .faq-section { padding: 56px 0; }
  .category-hero { padding: 60px 0 56px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-col:first-child { grid-column: 1 / -1; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .brand-text { font-size: 16px; }
  .header-inner { gap: 10px; }
  .btn-sm { padding: 9px 14px; font-size: 13px; }
  .category-hero h1 { font-size: 2rem; }
  .hero-actions .btn { width: 100%; }
  .steps-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 24px; }
  .footer-col:first-child { grid-column: auto; }
  .faq-q { padding: 18px 20px; font-size: 1rem; }
  .faq-a-inner { padding: 0 20px 20px; }
  .cta-section { padding: 56px 0; }
  .cta-inner .btn { width: 100%; }
  .btn-cta { width: 100%; }
}