/* roulang page: index */
:root {
  --primary: #FF4E00;
  --primary-hover: #FF6B35;
  --primary-active: #D94200;
  --dark: #17181C;
  --dark-soft: #202228;
  --accent: #C8F31D;
  --bg-warm: #F6F5F1;
  --white: #FFFFFF;
  --light-warm: #EFEDE8;
  --text: #1A1B1F;
  --text-sub: #62646A;
  --border: rgba(23, 24, 28, 0.08);
  --radius-btn: 14px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --radius-lg: 24px;
  --shadow-card: 0 2px 12px rgba(23, 24, 28, 0.06);
  --shadow-hover: 0 8px 24px rgba(23, 24, 28, 0.12);
  --shadow-btn: 0 4px 16px rgba(255, 78, 0, 0.25);
  --container: 1200px;
  --section-gap: 96px;
  --speed: 0.2s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-warm);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}
img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--speed);
}
button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--section-gap) 0;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0;
  color: var(--text);
}
.section-desc {
  font-size: 16px;
  color: var(--text-sub);
  margin-top: 8px;
  max-width: 560px;
}
.text-primary {
  color: var(--primary) !important;
}
.bg-dark {
  background: var(--dark);
}
/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  transition: all var(--speed);
  min-height: 44px;
  border: 2px solid transparent;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 78, 0, 0.35);
}
.btn-primary:active {
  background: var(--primary-active);
  transform: translateY(0);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.btn-dark {
  background: var(--dark);
  color: #fff;
}
.btn-dark:hover {
  background: var(--dark-soft);
  transform: translateY(-2px);
}
/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 0 0;
}
.nav-panel {
  max-width: var(--container);
  margin: 0 auto;
  margin-left: 24px;
  margin-right: 24px;
  background: var(--dark);
  border-radius: var(--radius-panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  white-space: nowrap;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--speed);
  border-bottom: 2px solid transparent;
}
.nav-link i {
  font-size: 13px;
}
.nav-link:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-bottom-color: var(--primary);
}
.nav-link.active {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border-bottom-color: var(--primary);
}
.nav-cta {
  padding: 10px 22px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--speed);
  box-shadow: var(--shadow-btn);
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255, 78, 0, 0.35);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 20px;
  align-items: center;
  justify-content: center;
}
/* 移动端导航 */
.mobile-nav {
  display: none;
  position: absolute;
  top: 70px;
  left: 24px;
  right: 24px;
  background: var(--dark);
  border-radius: 16px;
  padding: 16px;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 15px;
}
.mobile-nav a:hover {
  background: rgba(255, 255, 255, 0.14);
}
/* Hero */
.hero {
  position: relative;
  padding-top: 40px;
  overflow: hidden;
}
.hero-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  min-height: 620px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(23, 24, 28, 0.92) 0%, rgba(23, 24, 28, 0.55) 55%, rgba(23, 24, 28, 0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 56px;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(200, 243, 29, 0.12);
  border: 1px solid rgba(200, 243, 29, 0.4);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  width: fit-content;
}
.hero-content h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.12;
  color: #fff;
  letter-spacing: 0;
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-stats {
  position: absolute;
  bottom: 32px;
  right: 32px;
  display: flex;
  gap: 14px;
  z-index: 3;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 18px 24px;
  min-width: 120px;
  box-shadow: var(--shadow-hover);
  text-align: center;
}
.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-sub);
  white-space: nowrap;
}
/* 痛点板块 */
.pain-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.pain-left .section-title {
  font-size: 38px;
}
.pain-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.pain-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 20px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--speed);
}
.pain-item:hover {
  box-shadow: var(--shadow-hover);
}
.pain-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(255, 78, 0, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.pain-text strong {
  display: block;
  font-size: 16px;
  margin-bottom: 2px;
  color: var(--text);
}
.pain-text span {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.5;
}
/* 解决方案 */
.solution-section {
  background: var(--light-warm);
}
.solution-header {
  margin-bottom: 48px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.solution-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}
.solution-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  transition: transform var(--speed), box-shadow var(--speed);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.solution-card::before {
  content: "";
  position: absolute;
  top: -40px;
  left: -40px;
  width: 80px;
  height: 80px;
  background: var(--primary);
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity var(--speed);
  z-index: 1;
}
.solution-card:hover::before {
  opacity: 1;
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.solution-card-inner {
  padding: 32px;
  position: relative;
  z-index: 2;
}
.solution-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}
.solution-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.solution-card p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.65;
  max-width: 480px;
}
.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: gap var(--speed);
}
.solution-link:hover {
  gap: 12px;
}
.solution-lg {
  grid-column: 1;
}
.solution-sm {
  grid-column: 1;
}
.solution-card-lg-image {
  height: 200px;
  overflow: hidden;
}
.solution-card-lg-image img {
  width: 100%;
  height: 100%;
}
.solution-card-sm .solution-card-inner {
  padding: 26px;
}
.solution-card-sm .solution-icon {
  width: 42px;
  height: 42px;
  font-size: 16px;
}
.solution-offset {
  margin-top: -24px;
}
/* 成果 */
.result-section {
  background: var(--dark);
  color: #fff;
  padding: var(--section-gap) 0;
}
.result-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: center;
}
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.result-card {
  background: var(--dark-soft);
  border-radius: var(--radius-card);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.result-card:nth-child(2) {
  margin-top: 24px;
}
.result-card:nth-child(3) {
  margin-top: -12px;
}
.result-number {
  font-size: 56px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}
.result-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}
.result-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 3px solid var(--primary);
  height: 420px;
}
.result-image img {
  width: 100%;
  height: 100%;
}
/* 证言 */
.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: flex-start;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px;
  border-left: 4px solid var(--primary);
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.testimonial-card:nth-child(2) {
  margin-top: 24px;
}
.testimonial-icon {
  color: var(--primary);
  font-size: 24px;
  margin-bottom: 12px;
}
.testimonial-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 18px;
}
.testimonial-person {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--light-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}
.testimonial-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.testimonial-tag {
  font-size: 12px;
  color: var(--text-sub);
  background: rgba(200, 243, 29, 0.2);
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 8px;
}
/* CMS列表 */
.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.news-more {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--speed);
}
.news-more:hover {
  gap: 12px;
}
.news-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
}
.news-feature {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: transform var(--speed), box-shadow var(--speed);
  display: flex;
  flex-direction: column;
}
.news-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.news-feature img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.news-feature-body {
  padding: 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-feature h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-feature p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  font-size: 12px;
  color: var(--text-sub);
}
.news-tag {
  background: var(--accent);
  color: var(--dark);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.news-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-side-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  display: flex;
  gap: 12px;
  padding: 12px;
  transition: transform var(--speed), box-shadow var(--speed);
}
.news-side-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.news-side-card img {
  width: 110px;
  height: 80px;
  border-radius: 8px;
  flex-shrink: 0;
}
.news-side-body h4 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}
.news-side-body p {
  font-size: 12px;
  color: var(--text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 60px 24px;
  text-align: center;
  color: var(--text-sub);
  border: 2px dashed var(--border);
}
/* FAQ */
.faq-section {
  background: var(--light-warm);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--speed);
}
.faq-item.open {
  box-shadow: var(--shadow-hover);
  border-left: 4px solid var(--primary);
  background: #fdfcf9;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  min-height: 48px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.faq-question .faq-icon {
  font-size: 18px;
  transition: transform var(--speed);
  color: var(--primary);
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
}
.faq-item.open .faq-answer {
  padding: 0 20px 16px;
  max-height: 300px;
}
/* CTA */
.cta-section {
  background: var(--dark);
  color: #fff;
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.15;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 160px;
  height: 160px;
  background: var(--primary);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  opacity: 0.3;
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: 0;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  font-size: 16px;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-note {
  margin-top: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}
/* 页脚 */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .nav-logo {
  margin-bottom: 12px;
  font-size: 22px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  max-width: 260px;
  line-height: 1.6;
}
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0;
}
.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--speed);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.55);
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact i {
  color: var(--primary);
  width: 18px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
/* 响应式 */
@media (max-width: 1023px) {
  .hero-content h1 {
    font-size: 42px;
  }
  .hero-stats {
    position: static;
    margin-top: 32px;
    flex-wrap: wrap;
  }
  .hero-container {
    min-height: auto;
    padding-bottom: 40px;
  }
  .hero-content {
    padding: 60px 40px 20px;
    max-width: 100%;
  }
  .solution-grid {
    grid-template-columns: 1fr 1fr;
  }
  .solution-lg {
    grid-column: 1 / -1;
  }
  .solution-offset {
    margin-top: 0;
  }
  .result-layout {
    grid-template-columns: 1fr;
  }
  .result-image {
    height: 280px;
  }
  .testimonial-grid {
    grid-template-columns: 1fr 1fr;
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .pain-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}
@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }
  .section-title {
    font-size: 26px;
  }
  .nav-links, .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-panel {
    margin-left: 16px;
    margin-right: 16px;
    padding: 8px 16px;
  }
  .nav-logo {
    font-size: 18px;
  }
  .nav-logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .mobile-nav {
    left: 16px;
    right: 16px;
  }
  .hero-content {
    padding: 48px 24px 24px;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
    margin-top: 24px;
  }
  .stat-card {
    padding: 12px 8px;
    min-width: 0;
  }
  .stat-number {
    font-size: 28px;
  }
  .stat-label {
    font-size: 11px;
  }
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .solution-lg {
    grid-column: 1;
  }
  .solution-offset {
    margin-top: 0;
  }
  .result-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .result-card {
    padding: 18px;
  }
  .result-number {
    font-size: 36px;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  .testimonial-card:nth-child(2) {
    margin-top: 0;
  }
  .news-feature img {
    height: 180px;
  }
  .news-side-card img {
    width: 84px;
    height: 64px;
  }
  .news-meta {
    flex-wrap: wrap;
  }
  .cta-content h2 {
    font-size: 28px;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-buttons .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 639px) {
  .pain-item {
    flex-direction: column;
  }
  .pain-icon {
    width: 38px;
    height: 38px;
  }
  .result-layout {
    gap: 32px;
  }
  .result-card:nth-child(2) {
    margin-top: 0;
  }
  .result-card:nth-child(3) {
    margin-top: 0;
  }
  .news-side-card {
    flex-direction: row;
  }
}

/* roulang page: category1 */
:root {
      --primary: #FF4E00;
      --primary-hover: #FF6B35;
      --primary-active: #D94200;
      --dark: #17181C;
      --accent: #C8F31D;
      --bg: #F6F5F1;
      --card: #FFFFFF;
      --bg-soft: #EFEDE8;
      --text: #1A1B1F;
      --text-2: #62646A;
      --border: rgba(23, 24, 28, 0.08);
      --radius-btn: 14px;
      --radius-card: 16px;
      --radius-panel: 20px;
      --radius-lg: 24px;
      --shadow-card: 0 2px 12px rgba(23, 24, 28, 0.06);
      --shadow-hover: 0 8px 24px rgba(23, 24, 28, 0.12);
      --shadow-btn: 0 4px 16px rgba(255, 78, 0, 0.25);
      --container: 1200px;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      letter-spacing: 0.02em;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; background: var(--bg-soft); }
    a { text-decoration: none; color: inherit; }
    button { font-family: inherit; border: none; background: none; cursor: pointer; }
    ul { list-style: none; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

    .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

    /* ====== 导航 ====== */
    .site-header {
      position: sticky;
      top: 12px;
      z-index: 1000;
      padding: 0 16px;
    }
    .nav-panel {
      background: var(--dark);
      border-radius: var(--radius-panel);
      padding: 10px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 700;
      font-size: 18px;
      white-space: nowrap;
    }
    .nav-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--primary-hover));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 16px;
      box-shadow: var(--shadow-btn);
    }
    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
      flex: 1;
      justify-content: center;
    }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 10px 16px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.1);
      color: rgba(255, 255, 255, 0.85);
      font-size: 14px;
      font-weight: 500;
      transition: all 0.2s ease;
      min-height: 44px;
    }
    .nav-link i { color: rgba(255, 255, 255, 0.6); transition: color 0.2s; }
    .nav-link:hover { background: rgba(255, 255, 255, 0.16); box-shadow: inset 0 -2px 0 var(--primary); }
    .nav-link:hover i { color: var(--primary); }
    .nav-link.active { background: rgba(255, 255, 255, 0.16); color: #fff; box-shadow: inset 0 -2px 0 var(--primary); }
    .nav-link.active i { color: var(--primary); }
    .nav-cta {
      background: var(--primary);
      color: #fff !important;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 14px;
      transition: all 0.2s ease;
      white-space: nowrap;
      min-height: 44px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-cta:hover { background: var(--primary-hover); box-shadow: var(--shadow-btn); transform: translateY(-2px); }
    .nav-cta:active { background: var(--primary-active); transform: translateY(0); }
    .nav-toggle { display: none; background: rgba(255, 255, 255, 0.1); border: none; color: #fff; width: 44px; height: 44px; border-radius: 10px; font-size: 18px; cursor: pointer; align-items: center; justify-content: center; }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      background: var(--dark);
      border-radius: var(--radius-panel);
      padding: 16px;
      margin-top: 8px;
      flex-direction: column;
      gap: 8px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 14px 16px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      font-weight: 500;
      min-height: 44px;
    }
    .mobile-menu a i { width: 20px; color: var(--primary); }
    .mobile-menu a.active { background: rgba(255, 78, 0, 0.15); box-shadow: inset 0 -2px 0 var(--primary); }

    /* ====== 页头横幅 ====== */
    .page-banner { padding-top: 40px; }
    .banner-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 300px;
      background: var(--bg-soft);
    }
    .banner-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .banner-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(23, 24, 28, 0.88) 0%, rgba(23, 24, 28, 0.55) 55%, rgba(23, 24, 28, 0.2) 100%);
      display: flex;
      align-items: center;
      padding: 40px 48px;
    }
    .breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 13px; color: rgba(255, 255, 255, 0.7); margin-bottom: 16px; }
    .breadcrumb a { color: rgba(255, 255, 255, 0.7); transition: color 0.2s; }
    .breadcrumb a:hover { color: var(--primary); }
    .banner-title { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.2; letter-spacing: 0; }
    .banner-sub { font-size: 16px; color: rgba(255, 255, 255, 0.85); max-width: 520px; margin-top: 12px; line-height: 1.7; }

    /* ====== 推荐卡片 ====== */
    .feature-card {
      background: var(--bg-soft);
      border: 2px solid var(--primary);
      border-radius: var(--radius-card);
      padding: 24px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin-top: 32px;
      min-height: 120px;
      transition: box-shadow 0.2s ease;
    }
    .feature-card:hover { box-shadow: var(--shadow-hover); }
    .feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
    .feature-card p { color: var(--text-2); font-size: 14px; }

    /* ====== 按钮 ====== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: var(--radius-btn);
      transition: all 0.2s ease;
      white-space: nowrap;
      min-height: 44px;
    }
    .btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow-btn); transform: translateY(-2px); }
    .btn-primary:active { background: var(--primary-active); transform: translateY(0); }
    .btn-lg { padding: 14px 32px; font-size: 16px; }

    /* ====== 主体内容 ====== */
    .content-section { padding: 72px 0 0; }
    .content-body { max-width: 720px; margin: 0 auto; }
    .content-body h2 { font-size: 28px; font-weight: 700; margin: 48px 0 16px; letter-spacing: 0; line-height: 1.3; }
    .content-body h2:first-child { margin-top: 0; }
    .content-body p { font-size: 16px; line-height: 1.85; color: var(--text); margin-bottom: 16px; }
    .content-body ul { margin-bottom: 16px; }
    .content-body ul li {
      position: relative;
      padding: 6px 0 6px 26px;
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 4px;
    }
    .content-body ul li::before {
      content: "";
      position: absolute;
      left: 4px;
      top: 16px;
      width: 8px;
      height: 8px;
      border-radius: 2px;
      background: var(--primary);
    }
    .quote-block {
      border-left: 4px solid var(--primary);
      background: var(--bg-soft);
      padding: 16px 20px;
      border-radius: 0 12px 12px 0;
      margin: 24px 0;
      font-size: 15px;
      color: var(--text-2);
    }

    /* ====== 训练模块 ====== */
    .modules-section { padding: 72px 0; }
    .modules-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .module-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 32px;
      position: relative;
      overflow: hidden;
      transition: all 0.2s ease;
      box-shadow: var(--shadow-card);
    }
    .module-card::before {
      content: "";
      position: absolute;
      top: 0; left: 0;
      width: 0; height: 4px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .module-card:hover::before { width: 100%; }
    .module-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
    .module-card-main img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: 12px;
      margin-bottom: 20px;
    }
    .module-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
    .module-card h3 i { color: var(--primary); }
    .module-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; margin-bottom: 16px; }
    .arrow-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      transition: all 0.2s ease;
    }
    .arrow-link i { transition: transform 0.2s ease; }
    .arrow-link:hover { color: var(--primary); }
    .arrow-link:hover i { transform: translateX(4px); }

    /* ====== 成果数据 ====== */
    .results-section { background: var(--dark); color: #fff; padding: 72px 0; }
    .results-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
    .results-data { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .result-item h3 { font-size: 56px; font-weight: 800; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.1; letter-spacing: 0; }
    .result-item p { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 8px; }
    .results-image img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: var(--radius-lg);
      border: 2px solid var(--primary);
    }

    /* ====== FAQ ====== */
    .faq-section { padding: 72px 0; }
    .section-title { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 40px; letter-spacing: 0; }
    .faq-list { max-width: 720px; margin: 0 auto; }
    .faq-item {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      overflow: hidden;
      transition: box-shadow 0.2s ease;
    }
    .faq-item:hover { box-shadow: var(--shadow-card); }
    .faq-item.open {
      border-left: 4px solid var(--primary);
      background: var(--bg-soft);
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 600;
      min-height: 48px;
      text-align: left;
      color: var(--text);
      transition: color 0.2s;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-icon {
      width: 28px; height: 28px;
      flex-shrink: 0;
      display: flex; align-items: center; justify-content: center;
      font-size: 22px;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
      border-radius: 50%;
      background: rgba(255, 78, 0, 0.08);
    }
    .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease, padding 0.25s ease;
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-2);
    }
    .faq-item.open .faq-answer { padding: 0 20px 16px; max-height: 240px; }

    /* ====== CTA ====== */
    .cta-section {
      background: var(--dark);
      padding: 64px 0;
      position: relative;
      overflow: hidden;
    }
    .cta-section::before {
      content: "";
      position: absolute;
      width: 260px; height: 260px;
      border-radius: 50%;
      background: rgba(255, 78, 0, 0.18);
      top: -120px; right: -80px;
    }
    .cta-section::after {
      content: "";
      position: absolute;
      width: 120px; height: 120px;
      border: 20px solid var(--accent);
      border-radius: 50%;
      bottom: -60px; left: -40px;
      opacity: 0.15;
    }
    .cta-inner { position: relative; z-index: 2; text-align: center; }
    .cta-inner h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 24px; letter-spacing: 0; }
    .cta-actions { display: flex; justify-content: center; }
    .cta-note { font-size: 12px; color: rgba(255, 255, 255, 0.55); margin-top: 16px; }

    /* ====== 页脚 ====== */
    .site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.8); padding: 48px 0 24px; margin-top: 0; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 40px; margin-bottom: 32px; }
    .footer-brand .nav-logo { margin-bottom: 12px; }
    .footer-brand p { font-size: 14px; color: rgba(255, 255, 255, 0.55); max-width: 260px; line-height: 1.7; }
    .footer-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.65); transition: all 0.2s; }
    .footer-links a:hover { color: var(--primary); padding-left: 4px; }
    .footer-contact p { font-size: 14px; color: rgba(255, 255, 255, 0.65); display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
    .footer-contact i { width: 18px; color: var(--primary); }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.45); }

    /* ====== 响应式 ====== */
    @media (max-width: 1023px) {
      .modules-grid { grid-template-columns: 1fr; }
      .results-grid { grid-template-columns: 1fr; }
      .results-image img { height: 260px; }
      .banner-wrap { height: 260px; }
      .banner-title { font-size: 36px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 639px) {
      .container { padding: 0 16px; }
      .nav-links, .nav-cta { display: none; }
      .nav-toggle { display: flex; }
      .nav-panel { padding: 10px 16px; }
      .banner-wrap { height: 220px; }
      .banner-overlay { padding: 24px; }
      .banner-title { font-size: 30px; }
      .banner-sub { font-size: 14px; }
      .feature-card { flex-direction: column; padding: 20px; text-align: center; }
      .feature-card .btn-primary { width: 100%; justify-content: center; }
      .results-data { grid-template-columns: 1fr 1fr; gap: 20px; }
      .result-item h3 { font-size: 40px; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 26px; }
      .cta-inner h2 { font-size: 26px; }
      .btn-lg { width: 100%; justify-content: center; }
    }

/* roulang page: category2 */
:root {
  --brand: #FF4E00;
  --brand-hover: #FF6B35;
  --brand-active: #D94200;
  --dark: #17181C;
  --accent: #C8F31D;
  --cream: #F6F5F1;
  --warmgray: #EFEDE8;
  --ink: #1A1B1F;
  --sub: #62646A;
  --border: rgba(23, 24, 28, 0.08);
  --shadow-sm: 0 2px 12px rgba(23, 24, 28, 0.06);
  --shadow-md: 0 8px 24px rgba(23, 24, 28, 0.12);
  --shadow-brand: 0 4px 16px rgba(255, 78, 0, 0.25);
  --radius-btn: 14px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --radius-large: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.75;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--brand);
  background: rgba(255, 78, 0, 0.1);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: 0;
  margin-bottom: 12px;
}

.section-head p {
  font-size: 17px;
  color: var(--sub);
  max-width: 640px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 26px;
  border-radius: var(--radius-btn);
  transition: all 0.2s ease;
  line-height: 1;
}

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

.btn-primary:hover {
  background: var(--brand-hover);
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

.btn-primary:active {
  background: var(--brand-active);
  transform: translateY(0);
}

.btn-outline-light {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}

.btn-outline-light:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
  padding: 16px 34px;
  font-size: 17px;
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

/* Site header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: 12px;
}

.header-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--dark);
  border-radius: var(--radius-panel);
  padding: 10px 24px;
  box-shadow: var(--shadow-md);
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand);
  color: #fff;
  border-radius: 10px;
  font-size: 16px;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 10px 16px;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
}

.nav-link i {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border-bottom-color: var(--brand);
}

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

.nav-link.active {
  color: #fff;
  background: rgba(255, 78, 0, 0.18);
  border-bottom-color: var(--brand);
}

.nav-link.active i {
  color: var(--brand);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  white-space: nowrap;
  transition: all 0.2s ease;
}

.nav-cta:hover {
  background: var(--brand-hover);
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  color: #fff;
  font-size: 20px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
}

.mobile-menu {
  display: none;
  background: var(--dark);
  border-radius: var(--radius-panel);
  margin-top: 8px;
  padding: 16px;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-md);
}

.mobile-menu.visible {
  display: flex;
}

.mobile-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 14px 18px;
  transition: background 0.2s ease;
}

.mobile-link:hover {
  background: rgba(255, 255, 255, 0.12);
}

.mobile-link i {
  color: var(--brand);
}

.mobile-active {
  background: rgba(255, 78, 0, 0.16);
  color: #fff;
}

.mobile-cta {
  display: block;
  text-align: center;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  border-radius: 12px;
  padding: 14px 18px;
  margin-top: 4px;
  transition: background 0.2s ease;
}

.mobile-cta:hover {
  background: var(--brand-hover);
}

/* Category hero */
.cat-hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-large);
  margin-top: 12px;
  min-height: 420px;
  display: flex;
  align-items: center;
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.cat-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(23, 24, 28, 0.92) 0%, rgba(23, 24, 28, 0.65) 55%, rgba(23, 24, 28, 0.25) 100%);
}

.cat-hero-inner {
  position: relative;
  z-index: 2;
  padding: 80px 40px;
  max-width: 720px;
}

.cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--dark);
  font-size: 13px;
  font-weight: 800;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.cat-hero h1 {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.08;
  letter-spacing: 0;
  margin-bottom: 16px;
}

.cat-hero p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  line-height: 1.8;
}

.cat-hero-deco {
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 220px;
  height: 220px;
  background: var(--brand);
  transform: rotate(12deg);
  border-radius: 40px;
  opacity: 0.85;
  z-index: 1;
}

/* Featured card */
.feature-slot {
  padding: 24px 0 0;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--warmgray);
  border: 2px solid var(--brand);
  border-radius: var(--radius-card);
  padding: 20px 28px;
  max-height: 120px;
}

.feature-card-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.feature-card-text {
  flex: 1;
  min-width: 0;
}

.feature-card-text strong {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 4px;
}

.feature-card-text span {
  font-size: 14px;
  color: var(--sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feature-card-btn {
  flex-shrink: 0;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 12px;
  padding: 12px 20px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.feature-card-btn:hover {
  background: var(--brand-hover);
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

/* Intro section */
.intro-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}

.intro-copy h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0;
  margin-bottom: 16px;
}

.intro-copy p {
  font-size: 17px;
  color: var(--sub);
  line-height: 1.85;
  max-width: 660px;
  margin-bottom: 16px;
}

.intro-copy ul {
  list-style: none;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.intro-copy ul li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  align-items: center;
}

.intro-copy ul li i {
  color: var(--brand);
  font-size: 16px;
  width: 24px;
  text-align: center;
}

.intro-image {
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}

.intro-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.intro-image-tag {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--accent);
  color: var(--dark);
  font-size: 13px;
  font-weight: 800;
  padding: 8px 16px;
  border-radius: 999px;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.feature-grid-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.feature-grid-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--brand);
  transition: width 0.3s ease;
}

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

.feature-grid-item:hover::before {
  width: 100%;
}

.feature-grid-item.middle {
  transform: translateY(24px);
}

.feature-grid-item .item-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(255, 78, 0, 0.1);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.feature-grid-item h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: 0;
}

.feature-grid-item p {
  font-size: 15px;
  color: var(--sub);
  line-height: 1.75;
}

/* Audience section */
.audience-section {
  background: var(--warmgray);
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.audience-card {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.audience-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.audience-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--dark);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.audience-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 6px;
  letter-spacing: 0;
}

.audience-card p {
  font-size: 14px;
  color: var(--sub);
  line-height: 1.7;
}

/* Process */
.process {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.process-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  position: relative;
  padding-bottom: 48px;
}

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

.process-item::before {
  content: '';
  position: absolute;
  left: 39px;
  top: 72px;
  bottom: 0;
  width: 2px;
  background: rgba(23, 24, 28, 0.1);
}

.process-item:last-child::before {
  display: none;
}

.process-num {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: var(--dark);
  color: var(--accent);
  font-size: 24px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

.process-content {
  padding-top: 8px;
}

.process-content h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0;
}

.process-content p {
  font-size: 15px;
  color: var(--sub);
  line-height: 1.75;
  max-width: 600px;
}

/* Stats band */
.stats-band {
  background: var(--dark);
  border-radius: var(--radius-large);
  padding: 64px 48px;
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.stats-band::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  background: var(--brand);
  border-radius: 40px;
  transform: rotate(15deg);
  opacity: 0.35;
}

.stats-band-img {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 3px solid var(--brand);
  height: 340px;
}

.stats-band-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px 48px;
}

.stat-block {
  position: relative;
  padding-left: 4px;
}

.stat-num {
  font-size: 52px;
  font-weight: 900;
  color: var(--brand);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.68);
  margin-top: 6px;
  line-height: 1.6;
}

/* FAQ */
.faq-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-item.open {
  background: var(--warmgray);
  border-left: 4px solid var(--brand);
}

.faq-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  min-height: 48px;
  gap: 16px;
}

.faq-item-header h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
  color: var(--ink);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(23, 24, 28, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ink);
  flex-shrink: 0;
  transition: transform 0.2s ease, background 0.2s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--brand);
  color: #fff;
}

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

.faq-item-body-inner {
  padding: 0 20px 16px 20px;
  font-size: 15px;
  color: var(--sub);
  line-height: 1.75;
}

.faq-item.open .faq-item-body {
  max-height: 400px;
}

/* CTA */
.cta-block {
  background: var(--dark);
  padding: 80px 0;
  border-radius: 0;
  position: relative;
  overflow: hidden;
}

.cta-block::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: var(--brand);
  border-radius: 50px;
  transform: rotate(20deg);
  opacity: 0.3;
}

.cta-block::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 160px;
  height: 160px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.08;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.cta-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--dark);
  font-size: 13px;
  font-weight: 800;
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.cta-inner h2 {
  color: #fff;
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: 0;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-note {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 20px;
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.78);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 28px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
  font-size: 20px;
}

.footer-brand p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  max-width: 280px;
}

.footer-title {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0;
}

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

.footer-links a {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s ease;
}

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

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 10px;
}

.footer-contact i {
  width: 18px;
  color: var(--brand);
  font-size: 14px;
  text-align: center;
}

.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .header-panel {
    padding: 10px 16px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .cat-hero-inner {
    padding: 60px 32px;
  }

  .cat-hero h1 {
    font-size: 40px;
  }

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

  .feature-grid-item.middle {
    transform: translateY(12px);
  }

  .feature-grid-item:nth-child(3) {
    transform: translateY(0);
  }

  .stats-band {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 32px;
  }

  .section {
    padding: 80px 0;
  }
}

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

  .cat-hero {
    min-height: 360px;
  }

  .cat-hero-inner {
    padding: 48px 24px;
  }

  .cat-hero h1 {
    font-size: 36px;
  }

  .intro-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .intro-image img {
    height: 280px;
  }

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

  .feature-grid-item.middle {
    transform: translateY(0);
  }

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

  .feature-card {
    flex-direction: column;
    max-height: none;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
  }

  .feature-card-btn {
    width: 100%;
    text-align: center;
  }

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

  .stat-num {
    font-size: 40px;
  }

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

  .cta-inner h2 {
    font-size: 28px;
  }
}

@media (max-width: 639px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 56px 0;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .cat-hero {
    min-height: 320px;
    border-radius: 16px;
  }

  .cat-hero-inner {
    padding: 40px 20px;
  }

  .cat-hero h1 {
    font-size: 32px;
  }

  .cat-hero p {
    font-size: 15px;
  }

  .process-item {
    grid-template-columns: 60px 1fr;
    gap: 16px;
  }

  .process-item::before {
    left: 29px;
  }

  .process-num {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    font-size: 20px;
  }

  .process-content h3 {
    font-size: 18px;
  }

  .stats-band {
    padding: 36px 20px;
    border-radius: 16px;
  }

  .stats-band-img {
    height: 220px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .stat-num {
    font-size: 34px;
  }

  .footer-bottom {
    font-size: 12px;
  }
}

/* roulang page: article */
:root {
  --orange: #FF4E00;
  --orange-hover: #FF6B35;
  --orange-active: #D94200;
  --dark: #17181C;
  --light-bg: #F6F5F1;
  --card-bg: #FFFFFF;
  --warm-bg: #EFEDE8;
  --text-main: #1A1B1F;
  --text-sub: #62646A;
  --text-white: #FFFFFF;
  --text-light: #F2F2F2;
  --lime: #C8F31D;
  --border-light: rgba(23, 24, 28, 0.08);
  --radius-btn: 14px;
  --radius-card: 16px;
  --radius-lg: 20px;
  --shadow-card: 0 2px 12px rgba(23,24,28,0.06);
  --shadow-hover: 0 8px 24px rgba(23,24,28,0.12);
  --shadow-orange: 0 4px 16px rgba(255,78,0,0.25);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--light-bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all .2s ease; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }
::selection { background: var(--lime); color: var(--dark); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
main { padding-bottom: 0; }

/* ===== Header 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: 12px;
}
.nav-panel {
  position: relative;
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  box-shadow: 0 8px 28px rgba(23,24,28,0.18);
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-white);
  font-size: 20px;
  font-weight: 700;
  white-space: nowrap;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--orange);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-white);
  background: rgba(255,255,255,0.10);
  border: 1px solid transparent;
  font-weight: 500;
  transition: all .2s ease;
}
.nav-link:hover {
  border-bottom-color: var(--orange);
  background: rgba(255,255,255,0.18);
}
.nav-link:hover i { color: var(--orange); }
.nav-link.active {
  background: #fff;
  color: var(--dark);
}
.nav-link.active i { color: var(--orange); }
.nav-cta {
  background: var(--orange);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  transition: all .2s ease;
}
.nav-cta:hover {
  background: var(--orange-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-orange);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===== 文章页头 ===== */
.article-hero {
  position: relative;
  margin-top: 24px;
  border-radius: 24px;
  padding: 72px 48px;
  background: linear-gradient(100deg, rgba(23,24,28,0.94) 0%, rgba(23,24,28,0.72) 55%, rgba(23,24,28,0.35) 100%), url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
}
.article-hero::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -70px;
  width: 220px;
  height: 220px;
  background: var(--orange);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  opacity: 0.18;
}
.article-hero-inner {
  max-width: 860px;
  position: relative;
  z-index: 2;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.72);
}
.breadcrumbs a:hover { color: var(--orange); }
.breadcrumbs .sep { opacity: 0.5; }
.breadcrumbs .crumb-current { color: var(--orange); font-weight: 600; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(200, 243, 29, 0.15);
  color: var(--lime);
  border: 1px solid rgba(200,243,29,0.35);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.article-hero h1 {
  color: #fff;
  font-size: 42px;
  line-height: 1.28;
  font-weight: 800;
  max-width: 840px;
  margin-top: 12px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  align-items: center;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== 正文 ===== */
.article-section {
  margin-top: 48px;
}
.article-body-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.article-body {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-main);
  background: #fff;
  border-radius: var(--radius-card);
  padding: 40px 48px;
  box-shadow: var(--shadow-card);
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin-top: 1.6em;
  margin-bottom: 0.4em;
  letter-spacing: 0;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 1.4em;
  margin-bottom: 0.3em;
}
.article-body p {
  margin-bottom: 1.5em;
}
.article-body a {
  color: var(--orange);
  font-weight: 500;
}
.article-body a:hover { text-decoration: underline; }
.article-body img {
  border-radius: 12px;
  margin: 1.5em 0;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.article-body figure {
  margin: 1.5em 0;
}
.article-body figcaption {
  font-size: 12px;
  color: var(--text-sub);
  text-align: center;
  margin-top: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--orange);
  background: var(--warm-bg);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 1.5em 0;
  font-size: 16px;
  color: var(--text-main);
}
.article-body ul,
.article-body ol {
  margin: 1.5em 0;
  padding-left: 1.2em;
}
.article-body ul li {
  list-style: disc;
  margin-bottom: 8px;
  padding-left: 0.2em;
}
.article-body ol li {
  list-style: decimal;
  margin-bottom: 8px;
}
.article-body ul li::marker,
.article-body ol li::marker {
  color: var(--orange);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border-light);
  padding: 10px 12px;
  font-size: 15px;
}
.article-body th {
  background: var(--warm-bg);
  font-weight: 600;
}
.article-body pre {
  background: var(--dark);
  color: #fff;
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}
.article-body code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}
.empty-state {
  text-align: center;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 80px 24px;
  box-shadow: var(--shadow-card);
}
.empty-state h2 {
  font-size: 28px;
  font-weight: 700;
}
.empty-state p {
  color: var(--text-sub);
  margin: 12px 0 24px;
}

/* ===== 标签 ===== */
.tags-section {
  margin-top: 32px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.tags-title {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 12px;
}
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 999px;
  color: var(--text-main);
  background: rgba(200, 243, 29, 0.18);
  border: 1px solid rgba(200, 243, 29, 0.65);
  font-weight: 600;
  transition: all .2s ease;
}
.tag:hover {
  background: var(--lime);
  color: var(--dark);
  border-color: var(--lime);
}

/* ===== 相关推荐 ===== */
.related-section {
  margin-top: 72px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 24px;
  transition: all .2s ease;
}
.back-link:hover {
  color: var(--orange);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}
@media (min-width: 640px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .related-card:nth-child(2) {
    margin-top: 28px;
  }
}
.related-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: transform .2s ease, box-shadow .2s ease;
  display: block;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card .cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--warm-bg);
}
.related-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.related-card:hover .cover img {
  transform: scale(1.04);
}
.related-card .card-body {
  padding: 20px 20px 24px;
}
.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 8px;
}
.related-card .desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.related-card .read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-card .read-more i {
  transition: transform .2s ease;
}
.related-card:hover .read-more i {
  transform: translateX(4px);
}

/* ===== CTA ===== */
.cta-section {
  margin-top: 96px;
  background: var(--dark);
  border-radius: 24px;
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fff;
}
.cta-section::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 240px;
  height: 240px;
  background: var(--orange);
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
  opacity: 0.22;
}
.cta-section::after {
  content: "";
  position: absolute;
  left: 60px;
  bottom: -100px;
  width: 180px;
  height: 180px;
  background: rgba(200,243,29,0.08);
  border-radius: 50%;
}
.cta-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
}
.cta-section p {
  color: rgba(255,255,255,0.75);
  margin: 16px auto 32px;
  max-width: 560px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  border: none;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}
.btn-primary {
  background: var(--orange);
  color: #fff;
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  background: var(--orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,78,0,0.35);
}
.btn-primary:active {
  background: var(--orange-active);
  transform: translateY(0);
}
.cta-note {
  font-size: 12px;
  color: rgba(255,255,255,0.5) !important;
  margin-top: 16px !important;
  margin-bottom: 0 !important;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  margin-top: 96px;
  padding: 64px 0 24px;
  color: rgba(255,255,255,0.7);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
  color: rgba(255,255,255,0.6);
}
.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s ease;
}
.footer-links a:hover {
  color: var(--lime);
  padding-left: 4px;
}
.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255,255,255,0.65);
}
.footer-contact i {
  color: var(--orange);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .article-hero { padding: 56px 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-panel { padding: 8px 16px; }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background: var(--dark);
    border-radius: var(--radius-lg);
    padding: 16px;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.3);
  }
  .site-header.nav-open .nav-links {
    display: flex;
  }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
  }
  .nav-cta {
    display: none;
  }
  .article-hero { padding: 48px 24px; }
  .article-hero h1 { font-size: 32px; }
  .article-body { padding: 28px 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card:nth-child(2) { margin-top: 0; }
  .cta-section { padding: 48px 24px; }
  .cta-section h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 639px) {
  .container { padding: 0 16px; }
  .article-hero { padding: 36px 20px; border-radius: 16px; min-height: 280px; }
  .article-hero h1 { font-size: 28px; line-height: 1.35; }
  .article-meta { gap: 12px; }
  .section-title { font-size: 24px; }
  .cta-section { border-radius: 16px; padding: 40px 20px; }
  .cta-section h2 { font-size: 26px; }
  .btn { width: 100%; }
  .nav-panel { border-radius: 16px; }
}