/* roulang page: index */
:root {
  --bg: #0A0E14;
  --bg-elev: #10161F;
  --surface: #151C27;
  --surface-hover: #1A2330;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --primary: #00E5A0;
  --primary-strong: #00FFB3;
  --accent: #7B61FF;
  --hot: #FF2E88;
  --text: #F2F6F5;
  --text-dim: #93A0B1;
  --text-mute: #5E6A7A;
  --success: #00E5A0;
  --warning: #FFC247;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  padding-top: 68px;
}

.container-custom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-strong);
}
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

img {
  max-width: 100%;
  height: auto;
}

button, .btn {
  font-family: inherit;
}
.btn:focus, .btn:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 3px !important;
  box-shadow: none !important;
}

::selection {
  background: rgba(0, 229, 160, 0.3);
  color: #fff;
}

/* ===== Header / Nav ===== */
.site-header {
  background: rgba(10, 14, 20, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  background-image: linear-gradient(rgba(10,14,20,0.88), rgba(10,14,20,0.88)), linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  height: 68px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
}

.navbar {
  height: 68px;
  padding: 0;
}

.navbar-brand {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  letter-spacing: 0.02em;
}

.brand-glow {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--primary);
  flex-shrink: 0;
}

.navbar-brand:hover {
  color: #fff;
}

.brand-text {
  background: linear-gradient(135deg, #fff 40%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  gap: 4px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  padding: 8px 16px !important;
  position: relative;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
  box-shadow: 0 0 12px rgba(0, 229, 160, 0.4);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
}

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

.nav-link.active {
  box-shadow: 0 2px 12px rgba(0, 229, 160, 0.18);
}

.nav-cta {
  margin-left: 16px;
}

.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #0A0E14;
  font-size: 14px;
  font-weight: 700;
  height: 38px;
  padding: 0 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  gap: 8px;
  transition: all 0.25s ease;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.btn-primary-custom:hover {
  background: var(--primary-strong);
  color: #0A0E14;
  transform: translateY(-1px);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.35);
}

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

.btn-primary-custom:focus-visible,
.btn-outline-custom:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.navbar-toggler {
  border: 1px solid var(--border-strong);
  padding: 6px 12px;
  font-size: 16px;
  color: var(--text);
  border-radius: 8px;
  background: transparent;
}

.navbar-toggler:focus {
  box-shadow: none;
  border-color: var(--primary);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-top: 12px;
    padding: 16px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  }

  .navbar-nav {
    gap: 0;
  }

  .nav-link {
    padding: 12px 16px !important;
    height: auto;
    border-radius: 8px;
  }

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

  .nav-link:hover,
  .nav-link.active {
    background: var(--surface);
    color: var(--primary);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
    width: 100%;
  }

  .nav-cta .btn-primary-custom {
    width: 100%;
    height: 44px;
  }
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  min-height: calc(100vh - 68px);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, transparent 0%, rgba(10,14,20,0.55) 65%),
    linear-gradient(90deg, rgba(10,14,20,0.92) 0%, rgba(10,14,20,0.6) 50%, rgba(10,14,20,0.4) 100%),
    linear-gradient(0deg, var(--bg) 0%, transparent 30%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.25);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 5px;
  height: 5px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
  font-feature-settings: "tnum";
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary) 20%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  height: 48px;
  padding: 0 32px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  text-decoration: none;
  gap: 10px;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-outline-custom:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.15);
  transform: translateY(-2px);
}

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

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(180deg, var(--primary), transparent);
  animation: scroll-hint 2s ease-in-out infinite;
}

.scroll-text {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

@keyframes scroll-hint {
  0%, 100% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  50% { opacity: 0.5; transform: scaleY(0.7); transform-origin: top; }
}

@media (max-width: 767.98px) {
  .hero-section {
    min-height: 70vh;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn-primary-custom,
  .hero-buttons .btn-outline-custom {
    width: 100%;
    height: 48px;
  }
  .hero-scroll {
    display: none;
  }
}

/* ===== Section Common ===== */
.section-padding {
  padding: 80px 0;
}
@media (max-width: 575.98px) {
  .section-padding {
    padding: 56px 0;
  }
}

.section-header {
  margin-bottom: 48px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,229,160,0.4);
}

.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 680px;
  line-height: 1.8;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Directory / Collection ===== */
.directory-section {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.directory-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
}

.dir-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  min-height: 180px;
  text-decoration: none;
  color: var(--text);
}

.dir-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.dir-card:hover {
  background: var(--surface-hover);
  border-color: rgba(0, 229, 160, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 229, 160, 0.15);
  color: var(--text);
}

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

.dir-card:hover .dir-arrow {
  transform: translateX(4px);
  color: var(--primary);
}

.dir-num {
  font-size: 32px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.12);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  font-feature-settings: "tnum";
  transition: all 0.25s ease;
}

.dir-card:hover .dir-num {
  color: rgba(0, 229, 160, 0.35);
}

.dir-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.dir-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 16px;
}

.dir-arrow {
  align-self: flex-end;
  font-size: 18px;
  color: var(--text-mute);
  transition: all 0.25s ease;
}

@media (max-width: 1199.98px) {
  .directory-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

@media (max-width: 991.98px) {
  .directory-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 575.98px) {
  .directory-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .dir-card {
    min-height: 140px;
  }
}

/* ===== Featured Cards ===== */
.featured-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%);
}

.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 32px;
  transition: all 0.3s ease;
}

.featured-card:hover {
  border-color: rgba(0, 229, 160, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.featured-card.alternate .featured-media {
  order: 2;
}

.featured-media {
  position: relative;
  min-height: 260px;
  overflow: hidden;
}

.featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.4s ease;
}

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

.featured-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 70%, rgba(10,14,20,0.6));
  pointer-events: none;
}

.featured-card.alternate .featured-media::after {
  background: linear-gradient(270deg, transparent 70%, rgba(10,14,20,0.6));
}

.featured-content {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 500;
  background: rgba(0, 229, 160, 0.1);
  color: var(--primary);
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 229, 160, 0.2);
}

.featured-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.featured-excerpt {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 16px;
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 20px;
}

.featured-meta .dot-sep {
  width: 3px;
  height: 3px;
  background: var(--text-mute);
  border-radius: 50%;
}

.featured-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  transition: all 0.2s ease;
}

.featured-link i {
  transition: transform 0.2s ease;
}

.featured-link:hover i {
  transform: translateX(4px);
}

@media (max-width: 991.98px) {
  .featured-card,
  .featured-card.alternate {
    grid-template-columns: 1fr;
  }
  .featured-media {
    min-height: 220px;
    position: relative;
  }
  .featured-card.alternate .featured-media {
    order: 1;
  }
  .featured-content {
    padding: 24px;
  }
}

/* ===== Latest CMS List ===== */
.latest-section {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.latest-list {
  display: grid;
  gap: 16px;
}

.latest-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  transition: all 0.25s ease;
  text-decoration: none;
  color: var(--text);
}

.latest-item:hover {
  border-color: rgba(0, 229, 160, 0.3);
  background: var(--surface-hover);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  color: var(--text);
  transform: translateY(-2px);
}

.latest-item-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  flex-shrink: 0;
}

.latest-item-body {
  flex-grow: 1;
  min-width: 0;
}

.latest-item-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.latest-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-mute);
}

.latest-item-meta .tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  background: rgba(123, 97, 255, 0.12);
  border: 1px solid rgba(123, 97, 255, 0.2);
  border-radius: 999px;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.latest-item-meta .time {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.latest-item-arrow {
  font-size: 18px;
  color: var(--text-mute);
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.latest-item:hover .latest-item-arrow {
  color: var(--primary);
  transform: translateX(4px);
}

.empty-state {
  border: 1px dashed rgba(0, 229, 160, 0.3);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  background: rgba(0, 229, 160, 0.02);
}

.empty-state i {
  font-size: 40px;
  color: rgba(0, 229, 160, 0.5);
  margin-bottom: 16px;
  display: block;
}

.empty-state p {
  font-size: 15px;
  color: var(--text-dim);
  margin: 0;
}

@media (max-width: 575.98px) {
  .latest-item {
    flex-wrap: wrap;
    gap: 12px;
  }
  .latest-item-body {
    flex-basis: calc(100% - 56px - 12px);
  }
}

/* ===== Recommend Cards ===== */
.recommend-section {
  background: var(--bg);
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.recommend-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.25s ease;
  text-decoration: none;
  color: var(--text);
}

.recommend-card:hover {
  border-color: rgba(0, 229, 160, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  transform: translateY(-4px);
  color: var(--text);
}

.recommend-media {
  height: 180px;
  position: relative;
  overflow: hidden;
}

.recommend-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.recommend-media .badge-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(10, 14, 20, 0.75);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(0, 229, 160, 0.3);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  z-index: 2;
}

.recommend-body {
  padding: 20px;
}

.recommend-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.recommend-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.recommend-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-mute);
}

.recommend-foot .enter-link {
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.recommend-foot .enter-link i {
  transition: transform 0.2s ease;
}

.recommend-card:hover .enter-link i {
  transform: translateX(3px);
}

@media (max-width: 991.98px) {
  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 575.98px) {
  .recommend-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .recommend-media {
    height: 160px;
  }
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  padding: 96px 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  text-align: center;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,20,0.92), rgba(10,14,20,0.85));
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.cta-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 32px;
}

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

.cta-icon-row {
  margin-top: 36px;
  display: flex;
  gap: 24px;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 18px;
}

@media (max-width: 575.98px) {
  .cta-section {
    padding: 64px 0;
  }
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  .cta-buttons .btn-primary-custom,
  .cta-buttons .btn-outline-custom {
    width: 100%;
  }
}

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

.faq-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item.active {
  border-color: rgba(0, 229, 160, 0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: background 0.2s ease;
}

.faq-question::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.25s ease;
  box-shadow: 0 0 12px rgba(0, 229, 160, 0.4);
}

.faq-item.active .faq-question::before {
  opacity: 1;
}

.faq-question:hover {
  background: var(--surface-hover);
}

.faq-question-text {
  flex-grow: 1;
  line-height: 1.5;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.faq-item.active .faq-icon {
  background: rgba(0, 229, 160, 0.1);
  border-color: rgba(0, 229, 160, 0.4);
  color: var(--primary);
  transform: rotate(135deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-left: 24px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg);
  border-top: 1px solid transparent;
  background-image: linear-gradient(var(--bg), var(--bg)), linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  padding-top: 64px;
}

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

.footer-brand {
  margin-bottom: 16px;
}

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

.footer-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-top: 16px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

.footer-links a::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.4;
  transition: opacity 0.2s ease;
}

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

.footer-links a:hover::before {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-mute);
}

.footer-bottom a {
  color: var(--text-mute);
}

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

@media (max-width: 991.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand-col {
    grid-column: 1 / -1;
  }
}
@media (max-width: 575.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== Reveal Animation ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ===== Bootstrap Overrides ===== */
.btn {
  border-radius: 10px;
}
.form-control {
  border-radius: 12px;
}
.accordion-button:not(.collapsed) {
  background: var(--surface);
  color: var(--text);
}

/* roulang page: category1 */
:root {
            --bg: #0A0E14;
            --bg-elev: #10161F;
            --surface: #151C27;
            --surface-hover: #1A2330;
            --border: rgba(255, 255, 255, 0.07);
            --border-strong: rgba(255, 255, 255, 0.14);
            --primary: #00E5A0;
            --primary-strong: #00FFB3;
            --accent: #7B61FF;
            --hot: #FF2E88;
            --text: #F2F6F5;
            --text-dim: #93A0B1;
            --text-mute: #5E6A7A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 12px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 229, 160, 0.15);
            --shadow-btn: 0 0 20px rgba(0, 229, 160, 0.25);
            --shadow-accent: 0 0 24px rgba(123, 97, 255, 0.22);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            position: relative;
        }

        /* ===== 按钮 ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: var(--primary);
            color: #0A0E14;
            font-weight: 700;
            font-size: 15px;
            border: none;
            border-radius: var(--radius-btn);
            transform: translateY(0);
            transition: all 0.25s ease;
            box-shadow: 0 0 0 rgba(0, 229, 160, 0);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary-custom:hover {
            background: var(--primary-strong);
            transform: translateY(-2px);
            box-shadow: var(--shadow-btn);
            color: #0A0E14;
        }

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

        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.15);
        }

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

        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-lg-custom {
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
        }

        /* ===== 标签 / 徽章 ===== */
        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.04em;
            background: rgba(123, 97, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(123, 97, 255, 0.25);
        }

        .tag-pill-green {
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.22);
        }

        .tag-pill-hot {
            background: rgba(255, 46, 136, 0.1);
            color: var(--hot);
            border: 1px solid rgba(255, 46, 136, 0.22);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: 68px;
            background: rgba(10, 14, 20, 0.88);
            -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
            border-bottom: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent) 1;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text) !important;
            line-height: 1.2;
        }

        .navbar-brand:hover {
            color: var(--text) !important;
        }

        .brand-glow {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px var(--primary);
            flex-shrink: 0;
        }

        .brand-text {
            background: linear-gradient(90deg, var(--primary), var(--primary-strong), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        .navbar-toggler {
            border: 1px solid var(--border-strong);
            border-radius: 8px;
            padding: 6px 10px;
            background: var(--surface);
            color: var(--text);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.2);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(242,246,245,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-nav .nav-item {
            margin: 0 2px;
        }

        .navbar-nav .nav-link {
            color: var(--text-dim);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px !important;
            position: relative;
            border-radius: 6px;
            transition: color 0.2s ease;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
        }

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

        .navbar-nav .nav-link.active {
            color: #fff;
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
            box-shadow: 0 2px 12px rgba(0, 229, 160, 0.3);
        }

        .nav-cta {
            margin-left: 16px;
        }

        .nav-cta .btn-primary-custom {
            height: 38px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bg-elev);
                border: 1px solid var(--border);
                border-radius: 12px;
                padding: 16px;
                margin-top: 10px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

            .navbar-nav .nav-link {
                padding: 12px 16px !important;
                font-size: 15px;
            }

            .navbar-nav .nav-link::after {
                left: 16px;
                right: auto;
                width: 0;
                height: 100%;
                bottom: 0;
                background: rgba(0, 229, 160, 0.08);
                transform: scaleY(0);
                border-radius: 6px;
            }

            .navbar-nav .nav-link:hover::after,
            .navbar-nav .nav-link.active::after {
                transform: scaleY(1);
                width: 100%;
                box-shadow: none;
            }

            .nav-cta {
                margin: 12px 0 0;
                padding-top: 12px;
                border-top: 1px solid var(--border);
            }

            .nav-cta .btn-primary-custom {
                width: 100%;
                height: 44px;
            }
        }

        /* ===== 分类 Hero 横幅 ===== */
        .category-hero {
            position: relative;
            padding: 160px 0 80px;
            background: url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 20, 0.94) 0%, rgba(10, 14, 20, 0.82) 45%, rgba(10, 14, 20, 0.65) 100%);
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .category-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.02em;
            color: var(--text);
            margin-bottom: 18px;
        }

        .category-title .gradient-text {
            background: linear-gradient(90deg, var(--primary), var(--primary-strong), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .category-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.72);
            max-width: 640px;
            margin-bottom: 30px;
        }

        .hero-meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-bottom: 32px;
        }

        .hero-meta-line .hero-stat {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-dim);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 999px;
        }

        .hero-meta-line .hero-stat i {
            color: var(--primary);
            font-size: 13px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-section {
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            background: var(--bg);
        }

        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 13px;
            color: var(--text-mute);
        }

        .breadcrumb-custom a {
            color: var(--text-dim);
            transition: color 0.2s ease;
        }

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

        .breadcrumb-custom .separator {
            color: var(--text-mute);
            opacity: 0.5;
        }

        .breadcrumb-custom .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== 分类简介区 ===== */
        .category-intro {
            padding: 80px 0 60px;
            background: var(--bg);
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            color: var(--text);
        }

        .section-lead {
            font-size: 16px;
            color: var(--text-dim);
            line-height: 1.8;
            max-width: 720px;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .intro-text-block p {
            color: var(--text-dim);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .intro-text-block p:last-child {
            margin-bottom: 0;
        }

        .intro-divider {
            width: 56px;
            height: 3px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: 24px 0;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .feature-tile {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 22px 18px;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-tile:hover {
            background: var(--surface-hover);
            border-color: rgba(0, 229, 160, 0.3);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-tile i {
            font-size: 20px;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 229, 160, 0.08);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.15);
        }

        .feature-tile:nth-child(2) i {
            background: rgba(123, 97, 255, 0.1);
            color: var(--accent);
            border-color: rgba(123, 97, 255, 0.2);
        }

        .feature-tile:nth-child(3) i {
            background: rgba(255, 46, 136, 0.08);
            color: var(--hot);
            border-color: rgba(255, 46, 136, 0.18);
        }

        .feature-tile:nth-child(4) i {
            background: rgba(255, 194, 71, 0.08);
            color: var(--warning);
            border-color: rgba(255, 194, 71, 0.2);
        }

        .feature-tile h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0;
        }

        .feature-tile p {
            font-size: 13px;
            color: var(--text-mute);
            line-height: 1.65;
            margin-bottom: 0;
        }

        @media (max-width: 991.98px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 575.98px) {
            .intro-features {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 特色楼层 ===== */
        .feature-floor {
            padding: 60px 0 80px;
            background: var(--bg-elev);
            position: relative;
        }

        .feature-floor::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 160, 0.25), transparent);
        }

        .feature-floor-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .feature-floor-header .section-title {
            margin-bottom: 0;
        }

        .feature-floor-header .section-lead {
            max-width: 500px;
            margin-left: auto;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 160, 0.35);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-card-img {
            position: relative;
            height: 240px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .feature-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 20, 0) 40%, rgba(10, 14, 20, 0.6) 100%);
        }

        .feature-card-img .tag-pill {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(10, 14, 20, 0.75);
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
        }

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

        .feature-card-body h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .feature-card-body p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .feature-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap 0.2s ease, color 0.2s ease;
        }

        .feature-card-link:hover {
            color: var(--primary-strong);
            gap: 10px;
        }

        .feature-card-wide .feature-card-img {
            height: 280px;
        }

        @media (max-width: 575.98px) {
            .feature-card-img,
            .feature-card-wide .feature-card-img {
                height: 200px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .faq-section .section-title {
            text-align: center;
        }

        .faq-section .section-lead {
            text-align: center;
            margin: 0 auto 44px;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion {
            --bs-accordion-color: var(--text);
            --bs-accordion-bg: var(--surface);
            --bs-accordion-border-color: var(--border);
            --bs-accordion-border-radius: 14px;
            --bs-accordion-btn-color: var(--text);
            --bs-accordion-btn-bg: var(--surface);
            --bs-accordion-btn-padding-x: 20px;
            --bs-accordion-btn-padding-y: 16px;
            --bs-accordion-body-padding-x: 20px;
            --bs-accordion-body-padding-y: 0 20px 16px;
        }

        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-item:not(:first-of-type) {
            border-top: 1px solid var(--border);
        }

        .accordion-item[data-state="open"],
        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(0, 229, 160, 0.3);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 229, 160, 0.08);
        }

        .accordion-button {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            border: none;
            text-align: left;
            padding: 16px 20px;
            box-shadow: none;
            gap: 12px;
            transition: color 0.2s ease;
        }

        .accordion-button::before {
            content: "";
            width: 3px;
            height: 24px;
            border-radius: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.4);
            opacity: 0;
            transition: opacity 0.25s ease;
            flex-shrink: 0;
            align-self: center;
        }

        .accordion-button:not(.collapsed)::before {
            opacity: 1;
        }

        .accordion-button:not(.collapsed) {
            color: var(--text);
            background: var(--surface);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 12px;
        }

        .accordion-button::after {
            background-image: none;
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            content: "+" !important;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--text-dim);
            background: rgba(255, 255, 255, 0.04);
            border-radius: 6px;
            background-image: none;
            transition: transform 0.25s ease, color 0.25s ease, background 0.25s ease;
            transform: none;
            line-height: 1;
            padding: 4px;
            display: inline-block;
            text-align: center;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: none;
            transform: rotate(45deg);
            color: var(--primary);
            background: rgba(0, 229, 160, 0.1);
        }

        .accordion-body {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.7;
            padding-top: 0;
            padding-bottom: 20px;
            border-top: none;
        }

        /* ===== 相关分类入口 ===== */
        .related-entry {
            padding: 80px 0;
            background: var(--bg-elev);
            position: relative;
        }

        .related-entry::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(123, 97, 255, 0.25), transparent);
        }

        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px;
            height: 100%;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .related-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 48px;
            border-radius: 0 4px 4px 0;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(123, 97, 255, 0.3);
            box-shadow: var(--shadow-card-hover), var(--shadow-accent);
        }

        .related-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: rgba(0, 229, 160, 0.08);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.15);
            margin-bottom: 20px;
        }

        .related-card:nth-child(2) .related-card-icon {
            background: rgba(123, 97, 255, 0.1);
            color: var(--accent);
            border-color: rgba(123, 97, 255, 0.2);
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 24px;
            flex: 1;
        }

        .related-card .btn-outline-custom {
            align-self: flex-start;
            height: 40px;
            padding: 0 22px;
            font-size: 14px;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 80px 0;
            background: url("/assets/images/backpic/back-2.webp") center center / cover no-repeat;
            position: relative;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 20, 0.85);
        }

        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text);
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.75;
            margin-bottom: 28px;
        }

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

        .cta-box .cta-actions .btn-primary-custom,
        .cta-box .cta-actions .btn-outline-custom {
            height: 48px;
            padding: 0 30px;
            font-size: 15px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 64px 0 24px;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
        }

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

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

        .footer-desc {
            color: var(--text-mute);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            max-width: 360px;
        }

        .footer-title {
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            padding-bottom: 10px;
            position: relative;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
            padding-left: 0;
            position: relative;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-mute);
            font-size: 13px;
        }

        .footer-bottom span:last-child {
            color: var(--text-dim);
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .footer-brand-col {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        /* ===== 动画 ===== */
        @keyframes floatDown {
            0%,
            100% {
                transform: translateY(0);
                opacity: 0.8;
            }
            50% {
                transform: translateY(10px);
                opacity: 1;
            }
        }

        .scroll-indicator {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 40px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            z-index: 2;
        }

        .scroll-indicator::after {
            content: "";
            display: block;
            width: 4px;
            height: 8px;
            border-radius: 4px;
            background: var(--primary);
            margin: 6px auto 0;
            animation: floatDown 1.8s ease-in-out infinite;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 575.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-hero {
                padding: 120px 0 60px;
            }

            .category-title {
                font-size: 28px;
            }

            .category-subtitle {
                font-size: 15px;
            }

            .hero-meta-line .hero-stat {
                font-size: 13px;
                padding: 4px 10px;
            }

            .category-intro,
            .feature-floor,
            .faq-section,
            .related-entry,
            .cta-section {
                padding-top: 56px;
                padding-bottom: 56px;
            }

            .section-title {
                font-size: 24px;
            }

            .feature-floor-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .feature-floor-header .section-lead {
                margin-left: 0;
            }

            .feature-card-body {
                padding: 18px;
            }

            .feature-card-body h3 {
                font-size: 18px;
            }

            .cta-box .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-box .cta-actions .btn-primary-custom,
            .cta-box .cta-actions .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
        }

        @media (min-width: 576px) and (max-width: 767.98px) {
            .intro-features {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 768px) and (max-width: 991.98px) {
            .feature-card-img,
            .feature-card-wide .feature-card-img {
                height: 220px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }

            .feature-card:hover {
                transform: none;
            }

            .feature-card:hover .feature-card-img img {
                transform: none;
            }
        }

/* roulang page: article */
:root {
            --bg: #0A0E14;
            --bg-elev: #10161F;
            --surface: #151C27;
            --surface-hover: #1A2330;
            --border: rgba(255, 255, 255, 0.07);
            --border-strong: rgba(255, 255, 255, 0.14);
            --primary: #00E5A0;
            --primary-strong: #00FFB3;
            --accent: #7B61FF;
            --hot: #FF2E88;
            --text: #F2F6F5;
            --text-dim: #93A0B1;
            --text-mute: #5E6A7A;
            --warning: #FFC247;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 229, 160, 0.15);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        img {
            max-width: 100%;
            height: auto;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #0A0E14;
            font-weight: 700;
            font-size: 15px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-strong);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.35);
            transform: translateY(-2px);
            color: #0A0E14;
        }

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

        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.2);
            transform: translateY(-2px);
        }

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

        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 20, 0.88);
            -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
            border-bottom: 1px solid transparent;
        }

        .site-header::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
        }

        .navbar {
            height: 68px;
            padding: 0;
        }

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

        .brand-glow {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px var(--primary), 0 0 30px rgba(0, 229, 160, 0.4);
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
            line-height: 1.2;
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            color: var(--text-dim) !important;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px !important;
            position: relative;
            border-radius: 6px;
            transition: color .2s ease;
        }

        .nav-link:hover {
            color: #fff !important;
        }

        .nav-link.active {
            color: #fff !important;
        }

        .nav-link.active::after,
        .nav-link:hover::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 2px 12px rgba(0, 229, 160, 0.3);
        }

        .nav-cta {
            margin-left: 16px;
        }

        .nav-cta .btn-primary-custom {
            height: 38px;
            padding: 0 20px;
            font-size: 14px;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(0, 229, 160, 0.4);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,229,160,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
        }

        @media (max-width: 991.98px) {
            .site-header {
                height: auto;
            }
            .navbar {
                height: 68px;
            }
            .navbar-collapse {
                background: var(--bg-elev);
                border: 1px solid var(--border);
                border-radius: 14px;
                padding: 16px;
                margin-top: 8px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            }
            .navbar-nav {
                gap: 0;
            }
            .nav-link {
                padding: 12px 16px !important;
                border-radius: 8px;
            }
            .nav-link.active::after,
            .nav-link:hover::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(0, 229, 160, 0.08);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
            }
            .nav-cta .btn-primary-custom {
                width: 100%;
                height: 44px;
            }
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 140px 0 64px;
            background-size: cover;
            background-position: center;
            background-color: var(--bg);
        }

        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 20, 0.65) 0%, rgba(10, 14, 20, 0.94) 90%),
                radial-gradient(ellipse at 20% 30%, rgba(0, 229, 160, 0.16) 0%, transparent 60%);
        }

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

        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-mute);
            margin-bottom: 28px;
        }

        .breadcrumb-custom a {
            color: var(--text-dim);
            transition: color .2s;
        }

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

        .breadcrumb-custom .sep {
            color: var(--text-mute);
            margin: 0 2px;
        }

        .breadcrumb-custom .current {
            color: #fff;
            max-width: 400px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px 20px;
            margin-bottom: 18px;
        }

        .category-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 16px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .meta-time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-mute);
            font-size: 13px;
        }

        .meta-time i {
            color: var(--hot);
            font-size: 12px;
        }

        .article-title {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            position: relative;
            padding-left: 22px;
        }

        .article-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.4);
        }

        .article-summary {
            font-size: 16px;
            color: var(--text-dim);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 56px 0 48px;
            position: relative;
        }

        .article-content-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(242, 246, 245, 0.92);
            font-feature-settings: "tnum";
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 44px 0 16px;
            color: var(--text);
            letter-spacing: 0.02em;
            position: relative;
            padding-left: 16px;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;
            width: 3px;
            border-radius: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 34px 0 12px;
            color: var(--text);
            letter-spacing: 0.01em;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 28px 0 10px;
            color: var(--text);
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 24px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: 12px;
            max-width: 100%;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(0, 229, 160, 0.06);
            padding: 16px 24px;
            border-radius: 0 12px 12px 0;
            color: var(--text-dim);
            margin: 28px 0;
        }

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

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-decoration-color: rgba(0, 229, 160, 0.4);
            text-underline-offset: 4px;
        }

        .article-content a:hover {
            color: var(--primary-strong);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 28px;
            font-size: 14px;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border-strong);
            padding: 10px 16px;
            text-align: left;
        }

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

        .article-content pre {
            background: var(--bg-elev);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 18px;
            overflow-x: auto;
            margin-bottom: 28px;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-content code {
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }

        .article-empty {
            padding: 72px 0;
            text-align: center;
        }

        .empty-box {
            border: 1px dashed rgba(0, 229, 160, 0.35);
            border-radius: var(--radius-card);
            padding: 52px 24px;
            background: rgba(0, 229, 160, 0.04);
        }

        .empty-box i {
            font-size: 44px;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }

        .empty-box p {
            color: var(--text-dim);
            font-size: 16px;
            margin-bottom: 24px;
        }

        /* ===== Article Footer ===== */
        .article-footer {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            display: inline-flex;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--surface);
            border: 1px solid var(--border-strong);
            font-size: 13px;
            color: var(--text-dim);
            cursor: pointer;
            transition: all .2s ease;
        }

        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.15);
        }

        .tag-item::before {
            content: '#';
            margin-right: 4px;
            color: var(--text-mute);
        }

        .share-row {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .share-label {
            font-size: 14px;
            color: var(--text-dim);
        }

        .share-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-dim);
            font-size: 16px;
            transition: all .2s ease;
            cursor: pointer;
        }

        .share-icon:hover {
            color: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
            transform: translateY(-2px);
        }

        .share-icon .fa-copy {
            font-size: 15px;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 80px 0;
            background: var(--bg-elev);
            position: relative;
        }

        .related-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
            opacity: 0.6;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }

        .section-head p {
            color: var(--text-dim);
            font-size: 15px;
        }

        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 160, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .related-card .cover {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .related-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

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

        .related-card .card-tag {
            display: inline-flex;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(123, 97, 255, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .related-card h3 a {
            color: var(--text);
            transition: color .2s;
        }

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

        .related-card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: gap .2s ease, color .2s ease;
        }

        .card-link:hover {
            gap: 12px;
            color: var(--primary-strong);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }

        .faq-section .section-title {
            text-align: center;
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .faq-subtitle {
            text-align: center;
            color: var(--text-dim);
            font-size: 15px;
            margin-bottom: 40px;
        }

        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border) !important;
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease;
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(0, 229, 160, 0.35) !important;
        }

        .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 18px 20px 18px 36px;
            box-shadow: none !important;
            position: relative;
            border: none;
        }

        .accordion-button::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 16px;
            border-radius: 3px;
            background: transparent;
            transition: all .25s ease;
        }

        .accordion-button:not(.collapsed)::before {
            background: var(--primary);
            box-shadow: 0 0 10px rgba(0, 229, 160, 0.4);
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(0, 229, 160, 0.04);
        }

        .accordion-button:focus {
            box-shadow: none !important;
        }

        .accordion-button::after {
            background-image: none !important;
            font-family: "Font Awesome 6 Free";
            content: '\f067';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-mute);
            transition: transform .3s ease, color .3s ease;
            width: auto;
            height: auto;
            line-height: 1;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .accordion-body {
            padding: 0 24px 18px 36px;
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 88px 0;
            background-size: cover;
            background-position: center;
            background-color: var(--bg);
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 20, 0.92) 0%, rgba(16, 22, 31, 0.82) 100%);
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            color: var(--text-dim);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #0A0E14;
            border-top: 1px solid transparent;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding: 56px 0 40px;
        }

        .footer-brand .navbar-brand {
            margin-bottom: 16px;
            display: inline-flex;
        }

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

        .footer-desc {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
            margin-top: 12px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .footer-links {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
            transition: all .2s ease;
            position: relative;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-mute);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-card .cover {
                height: 200px;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding: 0 16px;
            }
            .article-banner {
                padding: 120px 0 48px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-main {
                padding: 40px 0 32px;
            }
            .related-section,
            .faq-section {
                padding: 56px 0;
            }
            .cta-section {
                padding: 64px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 40px 0 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-buttons .btn-primary-custom,
            .cta-buttons .btn-outline-custom {
                width: 100%;
            }
            .breadcrumb-custom .current {
                max-width: 240px;
            }
        }

        @media (max-width: 575.98px) {
            .article-meta-top {
                gap: 10px 14px;
            }
            .article-title {
                padding-left: 16px;
                font-size: 24px;
            }
            .article-title::before {
                width: 3px;
            }
            .article-summary {
                font-size: 15px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.85;
            }
            .related-card .cover {
                height: 180px;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                height: 44px;
                padding: 0 24px;
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }