/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #0b0f2a;
  --primary-light: #12183a;
  --secondary: #d4a853;
  --secondary-light: #e8c46a;
  --secondary-dark: #b8913e;
  --accent: #f0d68a;
  --bg-dark: #070a1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.08);
  --text-primary: #f0ede8;
  --text-secondary: #bfb8ae;
  --text-weak: #8a847a;
  --border-color: rgba(212,168,83,0.15);
  --border-light: rgba(255,255,255,0.06);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-float: 0 16px 48px rgba(0,0,0,0.55);
  --shadow-glow: 0 0 40px rgba(212,168,83,0.08);
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; outline: none; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
::selection { background: var(--secondary); color: var(--primary); }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 18px; }
}

/* ===== Glass Morphism Helpers ===== */
.glass {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.06);
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(7,10,26,0.82);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-bottom: 1px solid rgba(212,168,83,0.08);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(7,10,26,0.96);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo i { font-size: 20px; background: none; -webkit-text-fill-color: var(--secondary); }
.nav-center {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
  border-radius: 2px;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--secondary); }
.nav-link.active::after { width: 100%; }
.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 100px;
  padding: 0 14px 0 18px;
  height: 40px;
  transition: var(--transition);
  min-width: 200px;
}
.search-box:focus-within {
  border-color: var(--secondary);
  background: rgba(255,255,255,0.08);
  box-shadow: 0 0 0 3px rgba(212,168,83,0.08);
}
.search-box i { color: var(--text-weak); font-size: 14px; margin-right: 10px; }
.search-box input {
  font-size: 14px;
  color: var(--text-primary);
  background: transparent;
  width: 100%;
  height: 100%;
}
.search-box input::placeholder { color: var(--text-weak); }
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 26px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: var(--primary);
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}
.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212,168,83,0.3);
  color: var(--primary);
}
.btn-cta:active { transform: translateY(0); }
.btn-cta-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 26px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--secondary);
  color: var(--secondary);
  background: transparent;
  transition: var(--transition);
}
.btn-cta-outline:hover {
  background: var(--secondary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212,168,83,0.15);
}
.btn-cta-outline:active { transform: translateY(0); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 100%;
  background: rgba(7,10,26,0.98);
  backdrop-filter: blur(28px);
  border-bottom: 1px solid rgba(212,168,83,0.08);
  padding: 20px 24px 28px;
  z-index: 999;
  flex-direction: column;
  gap: 20px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-nav .nav-link {
  display: block;
  font-size: 17px;
  padding: 8px 0;
}
.mobile-nav .btn-cta {
  justify-content: center;
  width: 100%;
}
@media (max-width: 768px) {
  .nav-center { display: none; }
  .nav-right .search-box { display: none; }
  .nav-right .btn-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }
  .site-header .nav-right .btn-cta.mobile-show { display: inline-flex; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,10,26,0.30) 0%, rgba(7,10,26,0.75) 50%, var(--bg-dark) 100%);
  z-index: 1;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 40%, rgba(212,168,83,0.06) 0%, transparent 60%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 100px;
  background: rgba(212,168,83,0.10);
  border: 1px solid rgba(212,168,83,0.15);
  color: var(--secondary);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  margin-bottom: 28px;
}
.hero-badge i { font-size: 14px; }
.hero h1 {
  font-size: clamp(42px, 8vw, 78px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 40%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.hero-actions .btn-cta {
  padding: 14px 38px;
  font-size: 16px;
  gap: 10px;
}
.hero-actions .btn-cta i { font-size: 18px; }
.hero-actions .btn-play {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  border-radius: 100px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.hero-actions .btn-play:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-2px);
}
.hero-actions .btn-play .play-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--secondary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
}
.hero-actions .btn-play:hover .play-icon {
  background: var(--secondary-light);
  transform: scale(1.05);
}
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-top: 56px;
  flex-wrap: wrap;
}
.hero-stat-item {
  text-align: center;
}
.hero-stat-item .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.5px;
}
.hero-stat-item .label {
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 4px;
}
@media (max-width: 768px) {
  .hero { padding: 100px 18px 60px; min-height: 92vh; }
  .hero-stats { gap: 28px; margin-top: 40px; }
  .hero-stat-item .num { font-size: 26px; }
}

/* ===== Section Common ===== */
.section {
  padding: 90px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: clamp(28px, 4.2vw, 42px);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.section-header .sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-header .sub i { color: var(--secondary); }
.section-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 100px;
  background: rgba(212,168,83,0.08);
  border: 1px solid rgba(212,168,83,0.10);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 40px; }
}

/* ===== Intro / About ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}
.intro-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: var(--transition);
}
.intro-image:hover img { transform: scale(1.03); }
.intro-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(212,168,83,0.05), transparent);
  pointer-events: none;
}
.intro-text h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-primary);
}
.intro-text p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}
.intro-text .feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}
.intro-text .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}
.intro-text .feature-list li i {
  color: var(--secondary);
  font-size: 16px;
  margin-top: 3px;
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .intro-image img { height: 260px; }
  .intro-text h3 { font-size: 24px; }
}

/* ===== Category Cards ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.cat-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.cat-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212,168,83,0.20);
  box-shadow: var(--shadow-float);
}
.cat-card .card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}
.cat-card:hover .card-img { transform: scale(1.04); }
.cat-card .card-body {
  padding: 24px 26px 28px;
}
.cat-card .card-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.cat-card .card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}
.cat-card .card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(212,168,83,0.08);
  padding: 4px 14px;
  border-radius: 100px;
}
.cat-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--secondary);
  margin-top: 12px;
  transition: var(--transition);
}
.cat-card .card-link:hover { gap: 14px; color: var(--secondary-light); }
@media (max-width: 520px) {
  .cat-grid { grid-template-columns: 1fr; }
}

/* ===== Stats / Data ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stat-card {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.stat-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(212,168,83,0.12);
}
.stat-card .stat-icon {
  font-size: 32px;
  color: var(--secondary);
  margin-bottom: 16px;
}
.stat-card .stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.stat-card .stat-label {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 6px;
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card .stat-num { font-size: 28px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
}

/* ===== Latest Posts (CMS) ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.post-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212,168,83,0.15);
  box-shadow: var(--shadow-float);
}
.post-card .post-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  transition: var(--transition);
}
.post-card:hover .post-img { transform: scale(1.03); }
.post-card .post-body {
  padding: 22px 24px 26px;
}
.post-card .post-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-weak);
  margin-bottom: 10px;
}
.post-card .post-meta .cat {
  color: var(--secondary);
  font-weight: 600;
  background: rgba(212,168,83,0.08);
  padding: 2px 12px;
  border-radius: 100px;
}
.post-card .post-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.4;
}
.post-card .post-body h3 a { color: inherit; }
.post-card .post-body h3 a:hover { color: var(--secondary); }
.post-card .post-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-posts {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-weak);
  font-size: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255,255,255,0.06);
}
.posts-more {
  text-align: center;
  margin-top: 40px;
}
@media (max-width: 520px) {
  .posts-grid { grid-template-columns: 1fr; }
}

/* ===== Steps / Process ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  text-align: center;
  padding: 36px 20px 32px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  position: relative;
  transition: var(--transition);
}
.step-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(212,168,83,0.12);
  transform: translateY(-4px);
}
.step-card .step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  position: relative;
  z-index: 1;
}
.step-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
@media (max-width: 520px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(212,168,83,0.10); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  gap: 16px;
}
.faq-q:hover { color: var(--secondary); }
.faq-q i {
  font-size: 14px;
  color: var(--text-weak);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--secondary); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.22, 1, 0.36, 1), padding 0.4s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 24px 22px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, rgba(212,168,83,0.04), rgba(212,168,83,0.01));
  border-top: 1px solid rgba(212,168,83,0.06);
  border-bottom: 1px solid rgba(212,168,83,0.06);
}
.cta-box {
  text-align: center;
  padding: 20px 0;
}
.cta-box h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.cta-box p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.cta-actions .btn-cta { font-size: 16px; padding: 14px 38px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  border-top: 1px solid rgba(212,168,83,0.06);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { font-size: 20px; margin-bottom: 12px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h5 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--text-weak);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--secondary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.04);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-weak);
}
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--secondary); }
.footer-socials {
  display: flex;
  gap: 14px;
}
.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-weak);
  transition: var(--transition);
}
.footer-socials a:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(212,168,83,0.06);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ===== Responsive Tweaks ===== */
@media (max-width: 1024px) {
  .search-box { min-width: 140px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 36px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn-cta,
  .hero-actions .btn-play { width: 100%; justify-content: center; }
  .section-header h2 { font-size: 24px; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: rgba(212,168,83,0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(212,168,83,0.40); }

/* ===== Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #6c3ef8;
  --primary-dark: #5228d6;
  --primary-light: #8b6cff;
  --primary-gradient: linear-gradient(135deg, #6c3ef8 0%, #a855f7 100%);
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg-white: #ffffff;
  --bg-light: #f8f7fc;
  --bg-dark: #0f0a1e;
  --bg-card: #ffffff;
  --text-primary: #1a122e;
  --text-body: #3d3355;
  --text-muted: #7c6f96;
  --text-light: #b3a7c7;
  --border-light: #e8e4f0;
  --border-focus: #6c3ef8;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(108, 62, 248, 0.06);
  --shadow-md: 0 8px 28px rgba(108, 62, 248, 0.10);
  --shadow-lg: 0 20px 50px rgba(108, 62, 248, 0.14);
  --shadow-xl: 0 30px 70px rgba(108, 62, 248, 0.18);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-light);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); color: var(--text-primary); line-height: 1.3; font-weight: 700; }
/* ===== Container ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }
/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(108,62,248,0.08);
  height: var(--header-h); display: flex; align-items: center;
  box-shadow: 0 1px 12px rgba(108,62,248,0.04);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  height: 100%;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 800; font-size: 1.35rem;
  color: var(--text-primary); letter-spacing: -0.3px;
  transition: opacity var(--transition);
}
.logo i { color: var(--primary); font-size: 1.5rem; }
.logo:hover { opacity: 0.85; color: var(--text-primary); }
.nav-center { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 18px; border-radius: 100px;
  font-size: 0.9rem; font-weight: 500; color: var(--text-body);
  transition: all var(--transition); position: relative;
}
.nav-link:hover { background: rgba(108,62,248,0.07); color: var(--primary); }
.nav-link.active {
  background: var(--primary-gradient); color: #fff;
  box-shadow: 0 4px 14px rgba(108,62,248,0.30);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-btn {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-light); color: var(--text-muted);
  font-size: 1rem; cursor: pointer; transition: all var(--transition);
  border: 1px solid transparent;
}
.search-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.cta-btn {
  padding: 10px 24px; border-radius: 100px; font-weight: 600; font-size: 0.9rem;
  background: var(--primary-gradient); color: #fff;
  box-shadow: 0 4px 16px rgba(108,62,248,0.25);
  transition: all var(--transition); cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  border: none;
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(108,62,248,0.35); color: #fff; }
.cta-btn i { font-size: 0.85rem; }
.mobile-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; color: var(--text-primary); font-size: 1.4rem; cursor: pointer; border-radius: var(--radius-sm); transition: background var(--transition); }
.mobile-toggle:hover { background: rgba(108,62,248,0.07); }
@media (max-width: 768px) {
  .nav-center { display: none; }
  .nav-actions .cta-btn { display: none; }
  .mobile-toggle { display: flex; }
  .nav-center.open { display: flex; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); padding: 16px 24px; gap: 8px; align-items: stretch; }
  .nav-center.open .nav-link { text-align: center; padding: 12px 16px; }
  .nav-center.open .nav-link.active { background: var(--primary-gradient); color: #fff; }
}
/* ===== Page Banner ===== */
.page-banner {
  margin-top: var(--header-h);
  padding: 80px 0 60px;
  background: var(--bg-dark);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
  isolation: isolate;
}
.page-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,10,30,0.88) 0%, rgba(108,62,248,0.55) 100%);
  z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.banner-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 100px;
  background: rgba(255,255,255,0.12); backdrop-filter: blur(4px);
  color: rgba(255,255,255,0.85); font-size: 0.85rem; font-weight: 500;
  margin-bottom: 18px; border: 1px solid rgba(255,255,255,0.10);
}
.banner-badge i { color: var(--accent); font-size: 0.75rem; }
.page-banner h1 {
  font-size: 2.6rem; font-weight: 800; color: #fff;
  max-width: 800px; line-height: 1.25; letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.page-banner .meta-line {
  display: flex; flex-wrap: wrap; gap: 20px;
  color: rgba(255,255,255,0.70); font-size: 0.9rem;
}
.page-banner .meta-line i { margin-right: 6px; color: var(--accent); }
@media (max-width: 768px) {
  .page-banner { padding: 60px 0 40px; }
  .page-banner h1 { font-size: 1.8rem; }
  .page-banner .meta-line { font-size: 0.8rem; gap: 12px; }
}
/* ===== Main Content ===== */
.main-wrap { padding: 60px 0 80px; }
.article-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: 48px;
  align-items: start;
}
.article-body {
  background: var(--bg-white); border-radius: var(--radius-lg);
  padding: 48px 52px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.article-body .featured-img {
  border-radius: var(--radius-md); overflow: hidden; margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}
.article-body .featured-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.article-body .content {
  font-size: 1.05rem; line-height: 1.85; color: var(--text-body);
}
.article-body .content p { margin-bottom: 1.2em; }
.article-body .content h2, .article-body .content h3 {
  margin-top: 1.8em; margin-bottom: 0.6em; color: var(--text-primary);
}
.article-body .content h2 { font-size: 1.5rem; }
.article-body .content h3 { font-size: 1.25rem; }
.article-body .content ul, .article-body .content ol {
  padding-left: 1.5em; margin-bottom: 1.2em;
}
.article-body .content li { margin-bottom: 0.4em; list-style: disc; }
.article-body .content ol li { list-style: decimal; }
.article-body .content a { color: var(--primary); text-decoration: underline; }
.article-body .content blockquote {
  border-left: 4px solid var(--primary); padding: 16px 24px;
  background: var(--bg-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5em 0; color: var(--text-body); font-style: italic;
}
.article-tags {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; padding-top: 24px;
  border-top: 1px solid var(--border-light);
}
.article-tags .tag {
  padding: 6px 16px; border-radius: 100px; font-size: 0.8rem; font-weight: 500;
  background: var(--bg-light); color: var(--text-muted);
  transition: all var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; }
.article-nav {
  display: flex; justify-content: space-between; gap: 16px;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-light);
}
.article-nav a {
  padding: 10px 20px; border-radius: 100px; font-size: 0.9rem; font-weight: 500;
  background: var(--bg-light); color: var(--text-body);
  transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px;
}
.article-nav a:hover { background: var(--primary); color: #fff; }
/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card {
  background: var(--bg-white); border-radius: var(--radius-md);
  padding: 28px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.sidebar-card h4 {
  font-size: 1.1rem; margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 2px solid var(--primary); display: inline-block;
}
.sidebar-card ul li { margin-bottom: 2px; }
.sidebar-card ul li a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text-body);
  transition: all var(--transition);
}
.sidebar-card ul li a:hover { background: var(--bg-light); color: var(--primary); padding-left: 16px; }
.sidebar-card ul li a i { color: var(--primary-light); font-size: 0.75rem; width: 16px; text-align: center; }
.sidebar-cta {
  background: var(--primary-gradient); color: #fff; border: none;
  text-align: center; padding: 32px 24px;
}
.sidebar-cta h4 { color: #fff; border-bottom-color: rgba(255,255,255,0.3); }
.sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin-bottom: 20px; }
.sidebar-cta .cta-btn { background: #fff; color: var(--primary); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.sidebar-cta .cta-btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-body { padding: 32px 28px; }
}
@media (max-width: 768px) {
  .main-wrap { padding: 40px 0 60px; }
  .article-body { padding: 24px 18px; border-radius: var(--radius-md); }
  .article-body .content { font-size: 1rem; }
  .article-nav { flex-direction: column; align-items: stretch; text-align: center; }
}
/* ===== Not Found ===== */
.not-found-box {
  text-align: center; padding: 80px 24px; background: var(--bg-white);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.not-found-box i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
.not-found-box .cta-btn { display: inline-flex; }
/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.80); padding: 56px 0 0;
}
.site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.footer-grid {
  display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 14px; display: inline-flex; }
.footer-brand .logo i { color: var(--primary-light); }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.60); max-width: 320px; line-height: 1.7; }
.footer-col h5 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(255,255,255,0.60); font-size: 0.9rem; transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-col ul li a i { font-size: 0.8rem; width: 16px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; flex-wrap: wrap; gap: 12px;
  font-size: 0.85rem; color: rgba(255,255,255,0.45);
}
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.55);
  font-size: 1rem; transition: all var(--transition);
}
.footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
}
/* ===== Extra Utilities ===== */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --clr-primary: #c9a84c;
  --clr-primary-light: #dbb85c;
  --clr-primary-dark: #a8882e;
  --clr-bg: #0a0a1a;
  --clr-bg-alt: #0f0f24;
  --clr-bg-card: rgba(255, 255, 255, 0.04);
  --clr-bg-card-hover: rgba(255, 255, 255, 0.08);
  --clr-text: #f5f0e8;
  --clr-text-secondary: #b5ada0;
  --clr-text-muted: #7a7468;
  --clr-border: rgba(201, 168, 76, 0.2);
  --clr-border-hover: rgba(201, 168, 76, 0.5);
  --clr-overlay: rgba(10, 10, 26, 0.75);
  --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, 0.6);
  --shadow-glow: 0 0 30px rgba(201, 168, 76, 0.15);
  --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 72px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--clr-primary-light); }
a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 4px; border-radius: 4px; }
button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; color: inherit; }
button:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 4px; border-radius: 6px; }
input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--clr-text); }
h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: clamp(1.05rem, 1.8vw, 1.25rem); }
p { margin-bottom: 1rem; color: var(--clr-text-secondary); }
p:last-child { margin-bottom: 0; }

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== 通用板块 ===== */
.section {
  padding: 80px 0;
  position: relative;
}
.section-alt { background: var(--clr-bg-alt); }
.section-dark { background: #060612; }
.section-title {
  text-align: center;
  margin-bottom: 16px;
}
.section-subtitle {
  text-align: center;
  color: var(--clr-text-secondary);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
  border-radius: 4px;
  margin: 16px auto 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
  text-align: center;
  justify-content: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #0a0a1a;
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary));
  color: #0a0a1a;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: #0a0a1a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.btn-lg { padding: 16px 40px; font-size: 1.1rem; border-radius: var(--radius-md); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; border-radius: var(--radius-sm); }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--header-height);
  transition: background var(--transition), border-color var(--transition);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--clr-text);
  letter-spacing: -0.02em;
}
.logo i { color: var(--clr-primary); font-size: 1.5rem; }
.logo:hover { color: var(--clr-primary); }
.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  color: var(--clr-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition);
  position: relative;
}
.nav-link:hover {
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.05);
}
.nav-link.active {
  color: var(--clr-primary);
  background: rgba(201, 168, 76, 0.1);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-search {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--clr-border);
  border-radius: 24px;
  padding: 0 16px;
  height: 40px;
  transition: all var(--transition);
}
.nav-search:focus-within {
  border-color: var(--clr-primary);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-glow);
}
.nav-search i { color: var(--clr-text-muted); font-size: 0.9rem; }
.nav-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--clr-text);
  padding: 0 8px;
  font-size: 0.85rem;
  width: 140px;
}
.nav-search input::placeholder { color: var(--clr-text-muted); }
.nav-cta { padding: 8px 20px; font-size: 0.85rem; }
.menu-toggle { display: none; background: none; border: none; color: var(--clr-text); font-size: 1.6rem; padding: 4px; }

/* 移动端导航 */
@media (max-width: 900px) {
  .nav-center, .nav-right .nav-search, .nav-right .nav-cta { display: none; }
  .menu-toggle { display: block; }
  .mobile-open .nav-center {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px 24px;
    border-bottom: 1px solid var(--clr-border);
    gap: 4px;
  }
  .mobile-open .nav-center .nav-link { padding: 12px 16px; font-size: 1rem; }
  .mobile-open .nav-center .nav-link.active::after { display: none; }
  .mobile-open .nav-right { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
  .mobile-open .nav-right .nav-search { flex: 1; min-width: 0; }
  .mobile-open .nav-right .nav-search input { width: 100%; }
  .mobile-open .nav-right .nav-cta { display: inline-flex; }
}
@media (max-width: 520px) {
  .site-header .container { padding: 0 12px; }
  .logo { font-size: 1.1rem; }
  .logo i { font-size: 1.2rem; }
  .mobile-open .nav-center { padding: 16px; }
}

/* ===== Hero / Banner ===== */
.page-banner {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,26,0.85) 0%, rgba(10,10,26,0.5) 60%, rgba(10,10,26,0.3) 100%);
  z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { margin-bottom: 16px; }
.page-banner p { font-size: 1.15rem; max-width: 600px; color: var(--clr-text-secondary); margin-bottom: 24px; }
.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: 20px;
}
.page-banner .breadcrumb a { color: var(--clr-text-muted); }
.page-banner .breadcrumb a:hover { color: var(--clr-primary); }
.page-banner .breadcrumb span { color: var(--clr-primary); }
.page-banner .breadcrumb i { font-size: 0.7rem; color: var(--clr-text-muted); }

@media (max-width: 768px) {
  .page-banner { min-height: 320px; padding-bottom: 48px; }
  .page-banner h1 { font-size: 1.8rem; }
  .page-banner p { font-size: 1rem; }
}
@media (max-width: 520px) {
  .page-banner { min-height: 260px; padding-top: calc(var(--header-height) + 24px); padding-bottom: 32px; }
  .page-banner h1 { font-size: 1.5rem; }
  .page-banner p { font-size: 0.9rem; }
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 1024px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .card-grid, .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
}

/* ===== 攻略卡片 ===== */
.guide-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  background: var(--clr-bg-card-hover);
  border-color: var(--clr-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.guide-card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.guide-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.guide-card:hover .guide-card-img img { transform: scale(1.06); }
.guide-card-img .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--clr-primary);
  color: #0a0a1a;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.guide-card-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.guide-card-body h3 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}
.guide-card-body h3 a { color: var(--clr-text); }
.guide-card-body h3 a:hover { color: var(--clr-primary); }
.guide-card-body p {
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
  margin-bottom: 16px;
  flex: 1;
}
.guide-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--clr-border);
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}
.guide-card-footer .tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  background: rgba(201, 168, 76, 0.12);
  border-radius: 12px;
  color: var(--clr-primary);
  font-size: 0.75rem;
}

/* ===== 图文区块 ===== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }
.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}
.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(201,168,76,0.08));
  pointer-events: none;
}
.feature-content h2 { margin-bottom: 20px; }
.feature-content p { margin-bottom: 16px; font-size: 1.02rem; }
.feature-content .feature-list { margin-top: 20px; }
.feature-content .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--clr-text-secondary);
  font-size: 0.95rem;
}
.feature-content .feature-list li:last-child { border-bottom: none; }
.feature-content .feature-list li i { color: var(--clr-primary); font-size: 1.1rem; margin-top: 3px; flex-shrink: 0; }

@media (max-width: 1024px) {
  .feature-block { gap: 40px; }
}
@media (max-width: 768px) {
  .feature-block, .feature-block.reverse { grid-template-columns: 1fr; direction: ltr; gap: 28px; }
  .feature-block.reverse > * { direction: ltr; }
  .feature-image img { min-height: 220px; }
}

/* ===== 步骤/流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}
.step-card:hover {
  border-color: var(--clr-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.step-card .step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #0a0a1a;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.step-card h4 { margin-bottom: 10px; }
.step-card p { font-size: 0.88rem; color: var(--clr-text-secondary); margin-bottom: 0; }

@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ===== 统计数据 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  padding: 32px 16px;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.stat-item:hover {
  border-color: var(--clr-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-item .stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
}

@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item .stat-number { font-size: 2rem; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--clr-border-hover); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text);
  cursor: pointer;
  transition: background var(--transition);
  gap: 12px;
}
.faq-q:hover { background: rgba(255,255,255,0.03); }
.faq-q i {
  color: var(--clr-primary);
  font-size: 1.1rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
  color: var(--clr-text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  text-align: center;
  background: linear-gradient(135deg, var(--clr-bg-alt), #12122a);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 标签 ===== */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.tag-item {
  padding: 6px 18px;
  background: rgba(201, 168, 76, 0.08);
  border: 1px solid var(--clr-border);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--clr-text-secondary);
  transition: all var(--transition);
}
.tag-item:hover {
  background: rgba(201, 168, 76, 0.18);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #060612;
  border-top: 1px solid var(--clr-border);
  padding: 60px 0 0;
  color: var(--clr-text-secondary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--clr-border);
}
.footer-brand .logo { margin-bottom: 16px; font-size: 1.3rem; }
.footer-brand p { font-size: 0.9rem; color: var(--clr-text-muted); max-width: 300px; }
.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: var(--clr-text-muted);
  font-size: 0.88rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover { color: var(--clr-primary); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}
.footer-socials { display: flex; gap: 14px; }
.footer-socials a {
  color: var(--clr-text-muted);
  font-size: 1.2rem;
  transition: all var(--transition);
}
.footer-socials a:hover { color: var(--clr-primary); transform: scale(1.15); }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 辅助 ===== */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* ===== 动画 ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fadeUp 0.7s ease forwards; }
.animate-fade-up-d1 { animation-delay: 0.1s; }
.animate-fade-up-d2 { animation-delay: 0.2s; }
.animate-fade-up-d3 { animation-delay: 0.3s; }