/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #ff6b6b;
  --secondary: #1d3557;
  --secondary-light: #457b9d;
  --accent: #f4a261;
  --accent-dark: #e76f51;
  --bg-dark: #0b0e14;
  --bg-darker: #06080c;
  --bg-card: #131a24;
  --bg-card-hover: #1a2432;
  --bg-section: #0f141c;
  --text-light: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border-color: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 64px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(230,57,70,0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 999px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; outline: none; border: none; }

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

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-light);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.2rem; }
p { color: var(--text-muted); line-height: 1.8; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* ===== Navigation (Floating Capsule) ===== */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: 90%;
  max-width: 1100px;
}

.nav-capsule {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  transition: var(--transition);
}

.nav-capsule:hover {
  border-color: rgba(255,255,255,0.12);
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-light);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.nav-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
}

.nav-logo .logo-text {
  background: linear-gradient(135deg, var(--text-light) 60%, var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-full);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-light);
  background: rgba(255,255,255,0.06);
}

.nav-links a.active {
  color: var(--text-light);
  background: rgba(230,57,70,0.15);
  box-shadow: inset 0 0 0 1px rgba(230,57,70,0.2);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-cta {
  padding: 8px 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(230,57,70,0.3);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(230,57,70,0.4);
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.nav-toggle {
  display: none;
  font-size: 1.4rem;
  color: var(--text-light);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
}

@media (max-width: 768px) {
  .site-header { top: 12px; width: 94%; }
  .nav-capsule { padding: 8px 16px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background: rgba(11, 14, 20, 0.96);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    gap: 2px;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open a {
    width: 100%;
    text-align: center;
    padding: 12px 16px;
  }
  .nav-links.open a.active::after { display: none; }
  .nav-cta { margin-top: 4px; text-align: center; }
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,8,12,0.92) 30%, rgba(11,14,20,0.7) 60%, rgba(6,8,12,0.88) 100%);
}

.hero-overlay-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--bg-dark), transparent);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(230,57,70,0.12);
  border: 1px solid rgba(230,57,70,0.25);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--primary-light);
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge i { font-size: 0.7rem; }

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 50%, var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(230,57,70,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 48px rgba(230,57,70,0.4);
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: rgba(255,255,255,0.06);
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.12);
  transition: var(--transition);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-item .stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-light);
  line-height: 1.2;
}

.hero-stat-item .stat-number span {
  color: var(--primary);
}

.hero-stat-item .stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .hero { min-height: 90vh; padding: 100px 0 60px; }
  .hero-stats { gap: 24px; }
  .hero-stat-item .stat-number { font-size: 1.5rem; }
}

/* ===== Section Common ===== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 40px; }
}

/* ===== Features / Core Value ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card .icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(230,57,70,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .icon-wrap {
  background: rgba(230,57,70,0.2);
  transform: scale(1.05);
}

.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== Content / News List ===== */
.content-section {
  background: var(--bg-section);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.content-card .card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: var(--transition);
}

.content-card:hover .card-img {
  transform: scale(1.02);
}

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

.content-card .card-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(230,57,70,0.1);
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.content-card .card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-card .card-title a {
  color: var(--text-light);
}

.content-card .card-title a:hover {
  color: var(--primary-light);
}

.content-card .card-excerpt {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.content-card .card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.content-card .card-meta i {
  margin-right: 4px;
  font-size: 0.7rem;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
  grid-column: 1 / -1;
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

/* ===== Social Proof / Evidence ===== */
.proof-section {
  background: var(--bg-darker);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  text-align: center;
}

.proof-item {
  padding: 24px 16px;
}

.proof-item .proof-number {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.proof-item .proof-label {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-top: 8px;
}

/* ===== How It Works / Process ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  position: relative;
}

.process-step {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
}

.process-step:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.process-step .step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 20px;
  box-shadow: 0 4px 20px rgba(230,57,70,0.25);
}

.process-step h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 0.88rem;
  color: var(--text-dim);
}

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

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  text-align: left;
  background: transparent;
  transition: var(--transition);
  gap: 16px;
}

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

.faq-question i {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  z-index: 0;
}

.cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,8,12,0.92) 20%, rgba(11,14,20,0.8) 50%, rgba(6,8,12,0.92) 80%);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 24px;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-dim);
  max-width: 320px;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-dim);
  padding: 6px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: rgba(230,57,70,0.15);
  border-color: rgba(230,57,70,0.3);
  color: var(--primary);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

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

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(230,57,70,0.3);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(230,57,70,0.4);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===== Utility ===== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.gap-sm { gap: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0b0e14;
            --bg-card: #14181f;
            --bg-surface: #1a1f2a;
            --bg-elevated: #222834;
            --text-primary: #f1f3f5;
            --text-secondary: #a8b2c1;
            --text-muted: #6c7a8d;
            --border-color: #2a3340;
            --border-light: #354050;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
        h2 { font-size: clamp(1.4rem, 3vw, 2.0rem); }
        h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / 导航胶囊 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            pointer-events: none;
        }
        .nav-capsule {
            pointer-events: auto;
            background: rgba(20, 24, 31, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 8px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            box-shadow: var(--shadow-md);
            transition: background var(--transition), border-color var(--transition);
        }
        .nav-capsule:hover {
            background: rgba(26, 31, 42, 0.94);
            border-color: var(--border-light);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.5px;
        }
        .nav-logo:hover { color: var(--primary-light); }
        .logo-icon {
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 0.85rem;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-text { white-space: nowrap; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 40px !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.4);
        }
        .nav-cta i { font-size: 0.8rem; }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(255,255,255,0.06); }

        /* ===== 移动端导航 ===== */
        @media (max-width: 820px) {
            .site-header { top: 12px; }
            .nav-capsule { padding: 6px 16px; border-radius: 40px; }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: rgba(20, 24, 31, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-lg);
                padding: 16px;
                flex-direction: column;
                gap: 6px;
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; text-align: center; padding: 12px 16px; }
            .nav-cta { justify-content: center; }
            .nav-toggle { display: block; }
        }
        @media (max-width: 480px) {
            .logo-text { font-size: 0.95rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.75rem; }
            .nav-capsule { padding: 4px 12px; }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 140px 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f1620 50%, var(--bg-card) 100%);
            overflow: hidden;
            margin-top: 0;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,14,20,0.60) 0%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-banner h1 {
            font-size: clamp(1.8rem, 4.5vw, 3.0rem);
            font-weight: 800;
            max-width: 860px;
            margin: 0 auto 20px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.5);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px 30px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-meta i { color: var(--primary-light); font-size: 0.85rem; }
        .article-meta .category-tag {
            background: var(--primary);
            color: #fff;
            padding: 3px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 50px 0 80px;
            flex: 1;
        }
        .article-content {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow-md);
        }
        .article-content p {
            font-size: 1.05rem;
            line-height: 1.85;
            margin-bottom: 1.25rem;
            color: var(--text-secondary);
        }
        .article-content h2, .article-content h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-content h2 { font-size: 1.6rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
        .article-content h3 { font-size: 1.25rem; }
        .article-content ul, .article-content ol {
            margin: 1rem 0 1.5rem 1.5rem;
            color: var(--text-secondary);
        }
        .article-content li { margin-bottom: 0.6rem; list-style: disc; }
        .article-content ol li { list-style: decimal; }
        .article-content a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--accent); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-surface);
            padding: 16px 24px;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.8rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content figure {
            margin: 1.8rem 0;
            text-align: center;
        }
        .article-content figcaption {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .article-content .content-image {
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        /* ===== 文章未找到 ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .article-not-found p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 28px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .btn-back:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.35);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 50px 0 70px;
            background: var(--bg-surface);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.4rem;
            margin-bottom: 10px;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 36px;
            font-size: 0.95rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .rc-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(230,57,70,0.12);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .related-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
        }
        .related-card .rc-link {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
        }
        .related-card .rc-link:hover { color: var(--accent); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-surface);
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        @media (max-width: 820px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .footer-brand { grid-column: 1 / -1; }
            .article-content { padding: 32px 24px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-content { padding: 24px 16px; }
            .article-banner { padding: 120px 0 40px; }
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --c-primary: #0a0e1a;
            --c-primary-light: #151c2e;
            --c-secondary: #1a1f2e;
            --c-accent: #f0b90b;
            --c-accent-hover: #d4a017;
            --c-accent-glow: rgba(240, 185, 11, 0.25);
            --c-red: #e63946;
            --c-red-hover: #c1121f;
            --c-text: #ffffff;
            --c-text-muted: #b0b8c8;
            --c-text-dim: #6b7280;
            --c-border: rgba(240, 185, 11, 0.15);
            --c-border-light: rgba(255, 255, 255, 0.06);
            --c-bg-card: rgba(21, 28, 46, 0.85);
            --c-bg-card-hover: rgba(30, 40, 60, 0.95);
            --c-bg-section: rgba(10, 14, 26, 0.98);
            --c-overlay: rgba(10, 14, 26, 0.75);
            --c-overlay-heavy: rgba(10, 14, 26, 0.92);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 56px rgba(0, 0, 0, 0.6);
            --shadow-accent: 0 4px 24px rgba(240, 185, 11, 0.15);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 80px 0;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--c-text);
            background: var(--c-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--c-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--c-accent-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
        h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
        h3 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); }
        h4 { font-size: clamp(1.1rem, 1.6vw, 1.35rem); }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 24px;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--c-border);
            transition: background var(--transition), border-color var(--transition);
        }

        .nav-capsule {
            max-width: var(--container-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--c-text);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--c-accent);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--c-accent), var(--c-accent-hover));
            color: var(--c-primary);
            border-radius: var(--radius-sm);
            font-weight: 900;
            font-size: 1.1rem;
            box-shadow: 0 0 20px var(--c-accent-glow);
        }
        .logo-text {
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--c-text-muted);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--c-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--c-primary);
            background: var(--c-accent);
            box-shadow: 0 0 24px var(--c-accent-glow);
        }
        .nav-links a.active:hover {
            color: var(--c-primary);
            background: var(--c-accent-hover);
        }
        .nav-links .nav-cta {
            background: transparent;
            border: 1.5px solid var(--c-accent);
            color: var(--c-accent);
            padding: 8px 24px;
            border-radius: 100px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .nav-links .nav-cta:hover {
            background: var(--c-accent);
            color: var(--c-primary);
            box-shadow: 0 0 32px var(--c-accent-glow);
        }
        .nav-links .nav-cta i {
            font-size: 0.8rem;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--c-text);
            font-size: 1.4rem;
            transition: background var(--transition);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 12px 16px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(10, 14, 26, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--c-border);
                gap: 4px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
            }
            .nav-links .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: var(--c-primary);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            transform: scale(1.05);
            filter: blur(2px) brightness(0.45);
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10,14,26,0.6) 0%, rgba(10,14,26,0.85) 50%, var(--c-primary) 100%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(240,185,11,0.06) 0%, transparent 65%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 100px;
            background: rgba(240, 185, 11, 0.12);
            border: 1px solid rgba(240, 185, 11, 0.2);
            color: var(--c-accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: clamp(2.6rem, 6vw, 4.2rem);
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 40%, var(--c-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: var(--c-text-muted);
            line-height: 1.7;
            max-width: 680px;
            margin: 0 auto 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--c-accent), var(--c-accent-hover));
            color: var(--c-primary);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 24px var(--c-accent-glow);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 40px var(--c-accent-glow);
            color: var(--c-primary);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 100px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--c-text);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            color: var(--c-text);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--c-accent);
            letter-spacing: -0.02em;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--c-text-dim);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--section-padding);
            position: relative;
        }
        .section-dark {
            background: var(--c-bg-section);
        }
        .section-light {
            background: var(--c-primary-light);
        }
        .section-divider {
            position: relative;
        }
        .section-divider::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(240, 185, 11, 0.1);
            border: 1px solid rgba(240, 185, 11, 0.15);
            color: var(--c-accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-title {
            text-align: center;
            margin-bottom: 12px;
        }
        .section-desc {
            text-align: center;
            color: var(--c-text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }

        /* ===== 卖点卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        .feature-card {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            backdrop-filter: blur(8px);
        }
        .feature-card:hover {
            background: var(--c-bg-card-hover);
            border-color: rgba(240, 185, 11, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(240, 185, 11, 0.15), rgba(240, 185, 11, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--c-accent);
            border: 1px solid rgba(240, 185, 11, 0.1);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--c-text);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--c-text-muted);
            line-height: 1.6;
        }

        /* ===== 赛事项目卡片 ===== */
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .sports-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .sports-grid {
                grid-template-columns: 1fr;
            }
        }

        .sport-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--c-bg-card);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
            position: relative;
        }
        .sport-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(240, 185, 11, 0.2);
        }
        .sport-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .sport-card:hover .sport-card-img {
            transform: scale(1.05);
        }
        .sport-card-body {
            padding: 20px 20px 24px;
        }
        .sport-card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            background: rgba(240, 185, 11, 0.12);
            color: var(--c-accent);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .sport-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--c-text);
        }
        .sport-card p {
            font-size: 0.88rem;
            color: var(--c-text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .sport-card-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--c-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .sport-card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .sport-card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        .step-card {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            counter-increment: step;
        }
        .step-card:hover {
            background: var(--c-bg-card-hover);
            border-color: rgba(240, 185, 11, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c-accent), var(--c-accent-hover));
            color: var(--c-primary);
            font-size: 1.3rem;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 24px var(--c-accent-glow);
        }
        .step-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--c-text);
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--c-text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 185, 11, 0.12);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c-text);
            cursor: pointer;
            transition: background var(--transition);
            gap: 16px;
            width: 100%;
            text-align: left;
            background: transparent;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--c-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--c-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            filter: brightness(0.3) blur(1px);
            z-index: 0;
        }
        .cta-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,14,26,0.85), rgba(10,14,26,0.7));
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: var(--c-text-muted);
            font-size: 1.05rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--c-primary);
            border-top: 1px solid var(--c-border);
            padding: 60px 24px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--c-text);
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--c-text-dim);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.88rem;
            color: var(--c-text-dim);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--c-accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 24px 0;
            border-top: 1px solid var(--c-border-light);
            font-size: 0.82rem;
            color: var(--c-text-dim);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-text-dim);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--c-accent);
            color: var(--c-primary);
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .hero-section {
                min-height: 90vh;
                padding: 100px 16px 60px;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 28px;
            }
            .hero-stat-num {
                font-size: 1.6rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-desc {
                margin-bottom: 32px;
            }
        }

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                justify-content: center;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-secondary {
                justify-content: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-accent { color: var(--c-accent); }
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }