/* roulang page: index */
:root {
  --bg-base: #0A0D10;
  --bg-elevated: #11171E;
  --bg-card: #161E26;
  --border-subtle: #232F39;
  --text-primary: #F2F5F7;
  --text-secondary: #9AA8B5;
  --text-muted: #667380;
  --brand: #C8FF2E;
  --brand-hover: #D8FF5A;
  --accent: #F5A524;
  --danger: #FF4D4F;
  --radius-card: 20px;
  --shadow-card: 0 20px 60px rgba(0,0,0,0.5);
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

@media (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 16, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s, border-color 0.3s;
}

.site-header.scrolled {
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 80px;
  transition: height 0.3s;
}

.site-header.scrolled .header-inner { height: 64px; }

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

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--brand);
  color: #0A0D10;
  font-size: 15px;
  font-weight: 800;
  border-radius: 10px;
  letter-spacing: 0.02em;
  transition: transform 0.3s;
}

.logo:hover .logo-mark { transform: scale(1.04); }

.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.logo-sub {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.12em;
}

.nav-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  white-space: nowrap;
}

.chip:hover {
  color: #ffffff;
  border-color: rgba(200, 255, 46, 0.4);
}

.chip.active {
  background: var(--brand);
  color: #0A0D10;
  font-weight: 600;
  border-color: var(--brand);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 8px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: transparent;
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
}

.mobile-chips {
  display: none;
  overflow-x: auto;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.mobile-chips::-webkit-scrollbar { display: none; }

@media (max-width: 1024px) {
  .nav-chips { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-chips { display: flex; }
  .header-inner { gap: 16px; }
  .header-actions { margin-left: auto; }
}

@media (max-width: 640px) {
  .logo-text { font-size: 18px; }
  .logo-mark { width: 38px; height: 38px; font-size: 13px; }
  .header-actions .btn { padding: 10px 16px; font-size: 0.85rem; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.25s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand);
  color: #0A0D10;
  box-shadow: 0 0 0 0 rgba(200, 255, 46, 0.25);
}

.btn-primary:hover {
  background: var(--brand-hover);
  box-shadow: 0 4px 28px rgba(200, 255, 46, 0.3);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.32);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-1px);
}

.btn-text {
  background: transparent;
  color: var(--brand);
  font-weight: 600;
  padding: 8px 0;
  font-size: 0.95rem;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid transparent;
}

.btn-text:hover { border-bottom-color: var(--brand); }

.btn-block { width: 100%; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,13,16,0.96) 0%, rgba(10,13,16,0.45) 60%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 120px;
  padding-bottom: 120px;
  max-width: 780px;
  margin-left: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 8px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(10,13,16,0.5);
}

.hero h1 {
  font-size: clamp(2.75rem, 7vw, 5.25rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero h1 .highlight {
  color: var(--brand);
}

.hero-sub {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-stats {
  position: absolute;
  right: 48px;
  bottom: 56px;
  z-index: 2;
  display: flex;
  gap: 40px;
  padding: 28px 36px;
  background: rgba(10,13,16,0.55);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

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

.stat-value {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: var(--brand);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 6px;
  white-space: nowrap;
}

.scroll-btn {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 20px;
  transition: border-color 0.3s, color 0.3s;
}

.scroll-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
}

@media (max-width: 768px) {
  .hero { min-height: auto; }
  .hero-content { padding-top: 96px; padding-bottom: 48px; }
  .hero-stats {
    position: static;
    margin: 0 20px 48px;
    padding: 20px 24px;
    gap: 20px;
    justify-content: center;
  }
  .scroll-btn { display: none; }
}

/* ===== Section ===== */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--bg-elevated);
}

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

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-title {
  position: relative;
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  padding-left: 20px;
  margin-bottom: 14px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.14em;
  width: 4px;
  height: 0.72em;
  border-radius: 2px;
  background: var(--brand);
}

.section-head.center .section-title {
  padding-left: 0;
}

.section-head.center .section-title::before {
  display: none;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 32px; }
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 44px;
  max-width: 820px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-subtle);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

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

.timeline-dot {
  position: absolute;
  left: -44px;
  top: 8px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.3s, transform 0.3s;
}

.timeline-dot::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  transition: transform 0.3s;
}

.timeline-item:hover .timeline-dot {
  box-shadow: 0 0 16px var(--brand);
  transform: scale(1.1);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 28px 32px;
  transition: transform 0.3s, border-color 0.3s;
}

.timeline-item:hover .timeline-card {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 46, 0.5);
}

.timeline-date {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--brand);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(200, 255, 46, 0.08);
  border: 1px solid rgba(200, 255, 46, 0.18);
}

.timeline-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 640px) {
  .timeline { padding-left: 36px; }
  .timeline-dot { left: -36px; width: 26px; height: 26px; }
  .timeline-card { padding: 20px; }
}

/* ===== Masonry ===== */
.masonry-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}

.masonry-card {
  grid-column: span 4;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
}

.masonry-card.small {
  grid-column: span 2;
}

.masonry-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 46, 0.45);
}

.masonry-media {
  overflow: hidden;
  height: 240px;
}

.masonry-card.small .masonry-media { height: 190px; }

.masonry-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.masonry-body {
  padding: 28px;
  flex: 1;
}

.masonry-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(200, 255, 46, 0.08);
  border: 1px solid rgba(200, 255, 46, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  margin-bottom: 18px;
}

.masonry-icon svg {
  width: 24px;
  height: 24px;
}

.masonry-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.masonry-body p {
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .masonry-card,
  .masonry-card.small {
    grid-column: span 6;
  }
  .masonry-media,
  .masonry-card.small .masonry-media {
    height: 220px;
  }
}

@media (max-width: 640px) {
  .masonry-grid { grid-template-columns: 1fr; }
  .masonry-card,
  .masonry-card.small {
    grid-column: span 1;
  }
  .masonry-body { padding: 20px; }
}

/* ===== Plans ===== */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, border-color 0.3s;
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 46, 0.4);
}

.plan-card.recommended {
  background: var(--bg-elevated);
  border-color: rgba(200, 255, 46, 0.45);
  box-shadow: var(--shadow-card);
  transform: translateY(-24px);
  padding-top: 48px;
  padding-bottom: 48px;
}

.plan-card.recommended:hover {
  transform: translateY(-28px);
}

.plan-badge {
  position: absolute;
  top: 0;
  right: 28px;
  transform: translateY(-50%);
  background: var(--accent);
  color: #0A0D10;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.plan-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.plan-price {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--brand);
  line-height: 1.1;
  margin-bottom: 24px;
}

.plan-price small {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.plan-list {
  list-style: none;
  margin-bottom: 28px;
  flex: 1;
}

.plan-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.plan-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand);
  font-weight: 700;
}

@media (max-width: 1024px) {
  .plan-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .plan-card.recommended {
    transform: none;
    padding-top: 44px;
    margin-top: 24px;
  }
  .plan-card.recommended:hover { transform: translateY(-4px); }
}

/* ===== News ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.news-card {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 46, 0.45);
}

.news-thumb {
  width: 260px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--bg-elevated);
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.news-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.news-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand);
  background: rgba(200, 255, 46, 0.08);
  border: 1px solid rgba(200, 255, 46, 0.18);
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.news-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  transition: color 0.2s;
}

.news-card:hover .news-body h3 {
  color: var(--brand);
}

.news-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: auto;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.news-meta time {
  display: flex;
  align-items: center;
  gap: 6px;
}

.empty-state {
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 48px 24px;
  text-align: center;
  background: var(--bg-card);
  color: var(--text-secondary);
}

.empty-state svg {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 200px; }
  .news-body { padding: 20px; }
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: var(--bg-elevated);
  padding: 88px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--brand), transparent 70%);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.cta-left h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.cta-left p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 28px;
}

.cta-contact {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-contact .row {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.cta-contact .row strong {
  color: var(--text-primary);
  font-weight: 600;
}

.cta-contact .row svg {
  width: 20px;
  height: 20px;
  color: var(--brand);
}

.apply-form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 0.95rem;
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}

.form-input::placeholder { color: var(--text-muted); }

.form-input:focus {
  outline: none;
  border-color: rgba(200, 255, 46, 0.7);
  box-shadow: 0 0 0 3px rgba(200, 255, 46, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

select.form-input option {
  background: var(--bg-card);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .cta-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-section { padding: 64px 0; }
  .apply-form { padding: 24px; }
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}

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

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  padding: 24px 4px;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  line-height: 1.5;
  transition: color 0.2s;
}

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

.faq-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: 16px;
  transition: transform 0.3s, color 0.3s, border-color 0.3s;
}

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

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

.faq-a p {
  padding: 0 4px 24px;
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 0.95rem;
  max-width: 96%;
}

.faq-item.open .faq-a {
  max-height: 320px;
}

/* ===== Footer ===== */
.site-footer {
  background: #07090C;
  border-top: 1px solid var(--border-subtle);
  margin-top: 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 64px 0 48px;
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  transition: color 0.2s;
}

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

.footer-contact li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  transition: color 0.2s, border-color 0.2s;
}

.back-top:hover {
  color: var(--brand);
  border-color: rgba(200, 255, 46, 0.4);
}

@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; padding: 48px 0 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* roulang page: article */
:root {
  --bg-base: #0A0D10;
  --bg-elevated: #11171E;
  --bg-card: #161E26;
  --border-subtle: #232F39;
  --text-primary: #F2F5F7;
  --text-secondary: #9AA8B5;
  --text-muted: #667380;
  --brand: #C8FF2E;
  --brand-hover: #D8FF5A;
  --accent: #F5A524;
  --danger: #FF4D4F;
  --radius: 20px;
  --radius-sm: 12px;
  --transition: all .25s ease;
  --shadow-card: 0 20px 60px rgba(0,0,0,.5);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Inter, "Segoe UI", sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul, ol { list-style: none; }
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: 80px;
  display: flex;
  align-items: center;
  transition: height .3s ease, background .3s ease, border-color .3s ease;
  background: transparent;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  height: 64px;
  background: rgba(10,13,16,.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--border-subtle);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 42px;
  height: 42px;
  background: var(--brand);
  color: #0A0D10;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -.02em;
  transition: var(--transition);
}
.logo:hover .logo-mark {
  box-shadow: 0 0 24px rgba(200,255,46,.45);
  transform: scale(1.04);
}
.logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.01em;
  white-space: nowrap;
}
.logo-sub {
  color: var(--brand);
  font-weight: 600;
  margin-left: 2px;
}
.nav-chips {
  display: flex;
  gap: 8px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-chips::-webkit-scrollbar { display: none; }
.chip {
  padding: 10px 20px;
  border-radius: 999px;
  font-size: .9rem;
  color: rgba(255,255,255,.72);
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.chip:hover {
  color: #fff;
  border-color: rgba(200,255,46,.4);
}
.chip.active {
  background: var(--brand);
  color: #0A0D10;
  font-weight: 600;
  border-color: transparent;
}
.header-actions {
  flex-shrink: 0;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 26px;
  border-radius: 999px;
  background: var(--brand);
  color: #0A0D10;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.2;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary:hover {
  background: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200,255,46,.25);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(200,255,46,.5);
  outline-offset: 2px;
}
.btn-primary.btn-sm {
  padding: 9px 20px;
  font-size: .88rem;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 26px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: .95rem;
  font-weight: 500;
  transition: var(--transition);
}
.btn-ghost:hover {
  border-color: rgba(200,255,46,.5);
  color: var(--brand);
  transform: translateY(-2px);
}
@media (max-width: 768px) {
  .site-header {
    height: auto;
    padding: 0;
  }
  .site-header.scrolled {
    height: auto;
  }
  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px 16px;
    padding: 12px 0 0;
  }
  .nav-chips {
    grid-column: 1 / -1;
    margin-left: 0;
    margin-top: 2px;
    padding-bottom: 10px;
  }
  .chip {
    padding: 8px 16px;
    font-size: .85rem;
  }
}

/* ===== Article Hero / Breadcrumb ===== */
.article-hero {
  position: relative;
  padding: 168px 0 72px;
  background-size: cover;
  background-position: center;
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10,13,16,.95) 8%,
    rgba(10,13,16,.76) 45%,
    rgba(10,13,16,.45) 100%
  );
}
.article-hero-inner {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .86rem;
  color: var(--text-muted);
  margin-bottom: 26px;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: var(--transition);
}
.breadcrumb a:hover { color: var(--brand); }
.bc-sep {
  color: var(--text-muted);
  opacity: .5;
}
.bc-current {
  color: var(--text-primary);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-heading {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  max-width: 800px;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: .9rem;
  color: var(--text-secondary);
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(200,255,46,.1);
  color: var(--brand);
  font-size: .82rem;
  font-weight: 500;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}
.meta-item::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
  margin-right: 8px;
}
@media (max-width: 768px) {
  .article-hero { padding: 130px 0 56px; }
  .breadcrumb { margin-bottom: 18px; }
}

/* ===== Article Body ===== */
.article-main {
  padding: 72px 0 32px;
  background: var(--bg-base);
}
.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
@media (max-width: 768px) {
  .article-body {
    padding: 28px 20px;
    border-radius: 14px;
  }
}
.article-content {
  color: var(--text-secondary);
  font-size: 16.5px;
  line-height: 1.8;
}
.article-content > * + * {
  margin-top: 1.4em;
}
.article-content h1 {
  font-size: 1.75rem;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2em;
}
.article-content h2 {
  font-size: 1.55rem;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.35;
  margin: 2em 0 .8em;
  padding-left: 16px;
  border-left: 3px solid var(--brand);
}
.article-content h3 {
  font-size: 1.28rem;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
  margin: 1.8em 0 .7em;
}
.article-content h4 {
  font-size: 1.08rem;
  color: var(--text-primary);
  font-weight: 600;
  margin: 1.6em 0 .6em;
}
.article-content p {
  margin-bottom: 0;
  color: var(--text-secondary);
}
.article-content a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(200,255,46,.4);
  transition: var(--transition);
}
.article-content a:hover {
  color: var(--brand-hover);
  text-decoration-color: var(--brand-hover);
}
.article-content ul,
.article-content ol {
  padding-left: 1.4em;
  margin: 1.5em 0;
}
.article-content ul {
  list-style: disc;
}
.article-content ol {
  list-style: decimal;
}
.article-content li {
  margin-bottom: .5em;
  padding-left: 2px;
}
.article-content li::marker {
  color: var(--brand);
}
.article-content blockquote {
  border-left: 3px solid var(--brand);
  background: rgba(200,255,46,.05);
  padding: 18px 24px;
  margin: 1.8em 0;
  border-radius: 0 14px 14px 0;
  color: var(--text-primary);
}
.article-content blockquote p:last-child {
  margin-bottom: 0;
}
.article-content img {
  border-radius: 14px;
  margin: 2em 0;
  box-shadow: 0 8px 30px rgba(0,0,0,.4);
}
.article-content figure {
  margin: 2em 0;
}
.article-content figcaption {
  text-align: center;
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: 10px;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
  margin: 2em 0;
  overflow: hidden;
  border-radius: 12px;
}
.article-content th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  font-weight: 600;
  text-align: left;
}
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  background: rgba(255,255,255,.01);
}
.article-content pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 18px;
  overflow-x: auto;
  font-size: .9rem;
  line-height: 1.7;
  margin: 1.8em 0;
  color: var(--text-primary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 2px 7px;
  border-radius: 6px;
  font-size: .9em;
  color: var(--brand);
}
.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 2.4em 0;
}

/* ===== Article Tools ===== */
.article-tools {
  padding: 48px 0 0;
}
.article-nav {
  max-width: 720px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.nav-item {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 20px 24px;
  transition: var(--transition);
}
.nav-item:hover {
  transform: translateY(-3px);
  border-color: rgba(200,255,46,.4);
}
.nav-item.next {
  text-align: right;
}
.nav-label {
  display: block;
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: .06em;
}
.nav-title {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
  font-size: .98rem;
  line-height: 1.45;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.nav-item:hover .nav-title {
  color: var(--brand);
}
.article-feedback {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 0 0;
  display: flex;
  justify-content: center;
  gap: 14px;
  border-top: 1px solid var(--border-subtle);
}
.feedback-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: .9rem;
  transition: var(--transition);
}
.feedback-btn:hover {
  border-color: rgba(200,255,46,.5);
  color: var(--brand);
  transform: translateY(-2px);
}
.feedback-btn.active {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(200,255,46,.08);
}
.feedback-btn svg {
  width: 17px;
  height: 17px;
}
@media (max-width: 640px) {
  .article-nav { grid-template-columns: 1fr; }
  .nav-item.next { text-align: left; }
}

/* ===== Related ===== */
.related-section {
  padding: 88px 0 24px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}
.section-title {
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  position: relative;
  padding-left: 20px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 2px;
  background: var(--brand);
}
.section-link {
  color: var(--text-secondary);
  font-size: .9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  white-space: nowrap;
}
.section-link:hover {
  color: var(--brand);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200,255,46,.45);
  box-shadow: 0 0 0 1px rgba(200,255,46,.15), 0 20px 50px rgba(0,0,0,.35);
}
.related-cover {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.04);
}
.related-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.related-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(200,255,46,.1);
  color: var(--brand);
  font-size: .78rem;
  font-weight: 500;
}
.related-body h3 {
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-primary);
  transition: var(--transition);
}
.related-card:hover .related-body h3 {
  color: var(--brand);
}
.related-body p {
  color: var(--text-secondary);
  font-size: .88rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: .87rem;
  font-weight: 500;
  transition: var(--transition);
}
.related-link:hover {
  color: var(--brand);
  gap: 10px;
}
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
}

/* ===== Article Back ===== */
.article-back {
  max-width: 720px;
  margin: 60px auto 0;
  display: flex;
  gap: 16px;
}
@media (max-width: 640px) {
  .article-back {
    flex-direction: column;
  }
}

/* ===== CTA Banner ===== */
.cta-banner {
  margin-top: 72px;
  padding: 72px 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,255,46,.12), transparent 70%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 44px;
  align-items: center;
}
.cta-info h2 {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -.01em;
}
.cta-info p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 460px;
}
.cta-form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 32px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: .86rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 13px 16px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text-primary);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(200,255,46,.7);
  box-shadow: 0 0 0 3px rgba(200,255,46,.15);
}
.form-group textarea { min-height: 90px; resize: vertical; }
.form-submit {
  width: 100%;
  justify-content: center;
  padding: 14px 28px;
  font-size: 1rem;
}
@media (max-width: 900px) {
  .cta-inner { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
  background: #07090C;
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--border-subtle);
}
.footer-brand p {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
  max-width: 340px;
}
.footer-col h4 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a,
.footer-col ul li {
  color: var(--text-secondary);
  font-size: .9rem;
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--brand);
}
.footer-contact li {
  line-height: 1.6;
}
.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: .84rem;
  color: var(--text-muted);
}
.back-top {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: .84rem;
  transition: var(--transition);
}
.back-top:hover {
  border-color: rgba(200,255,46,.5);
  color: var(--brand);
}
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 60px 24px;
}
.not-found .nf-icon {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.not-found h2 {
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0D10;
  --bg-elevated:#11171E;
  --bg-card:#161E26;
  --border-subtle:#232F39;
  --text-primary:#F2F5F7;
  --text-secondary:#9AA8B5;
  --text-muted:#667380;
  --brand:#C8FF2E;
  --brand-hover:#D8FF5A;
  --accent:#F5A524;
  --danger:#FF4D4F;
  --radius-lg:20px;
  --radius-md:12px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg-base);color:var(--text-primary);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Inter,"Segoe UI",sans-serif;line-height:1.75;font-size:1rem;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-alt{background:var(--bg-elevated)}
.section-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.section-head::before{content:"";width:24px;height:4px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(1.75rem,4vw,3rem);font-weight:700;line-height:1.15;letter-spacing:-0.02em}
.section-sub{color:var(--text-secondary);max-width:680px;margin-top:8px;font-size:1rem}
.eyebrow{font-size:.8125rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-secondary);margin-bottom:16px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,13,16,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-subtle);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:80px;transition:height .3s}
.site-header.scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:42px;height:42px;border-radius:12px;background:var(--brand);color:#0A0D10;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.1rem;box-shadow:0 0 0 1px rgba(200,255,46,.3)}
.logo-text{font-weight:800;font-size:1.2rem;letter-spacing:.01em;white-space:nowrap}
.logo-sub{color:var(--brand);font-weight:700}
.nav-chips{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.chip{padding:10px 20px;border-radius:999px;font-size:.9rem;color:rgba(255,255,255,.72);border:1px solid transparent;transition:all .25s;font-weight:500;display:inline-flex;align-items:center;gap:6px;background:transparent}
.chip:hover{color:#fff;border-color:rgba(200,255,46,.4);background:rgba(200,255,46,.06)}
.chip.active{background:var(--brand);color:#0A0D10;font-weight:600;box-shadow:0 0 20px rgba(200,255,46,.2)}
.header-cta{margin-left:auto;flex-shrink:0}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:600;font-size:.95rem;transition:all .25s;border:1px solid transparent;line-height:1.2}
.btn-brand{background:var(--brand);color:#0A0D10}
.btn-brand:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(200,255,46,.25)}
.btn-ghost{border-color:var(--border-subtle);color:var(--text-primary);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:1.05rem}
.btn-block{width:100%}

/* Hero */
.hero{position:relative;padding:120px 0 104px;background-size:cover;background-position:center;background-image:linear-gradient(90deg,rgba(10,13,16,.96) 0%,rgba(10,13,16,.7) 50%,rgba(10,13,16,.35) 100%),url('/assets/images/backpic/back-1.png');overflow:hidden}
.breadcrumb{display:flex;gap:8px;font-size:.875rem;color:var(--text-muted);margin-bottom:24px;align-items:center}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.hero h1{font-size:clamp(2.75rem,7vw,5.25rem);font-weight:800;line-height:1.02;letter-spacing:-0.02em;margin-bottom:20px}
.hero-sub{color:var(--text-secondary);font-size:clamp(1.05rem,2vw,1.3rem);max-width:560px;line-height:1.75;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .btn{min-width:160px}

/* Cards */
.event-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
@media(max-width:1024px){.event-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.event-grid{grid-template-columns:1fr}}
.event-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:20px;overflow:hidden;transition:all .3s;display:flex;flex-direction:column}
.event-card:hover{transform:translateY(-4px);border-color:rgba(200,255,46,.6);box-shadow:0 0 0 1px rgba(200,255,46,.15),0 20px 60px rgba(0,0,0,.4)}
.event-card-img{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-elevated)}
.event-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.event-card:hover .event-card-img img{transform:scale(1.03)}
.event-tag{position:absolute;top:14px;left:14px;z-index:2;background:rgba(10,13,16,.78);backdrop-filter:blur(6px);border:1px solid rgba(200,255,46,.4);color:var(--brand)}
.event-card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.event-card h3{font-size:1.2rem;line-height:1.4;margin:10px 0 8px;font-weight:600}
.event-card h3 a{transition:color .25s}
.event-card h3 a:hover{color:var(--brand)}
.event-card-desc{color:var(--text-secondary);font-size:.92rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.event-meta{display:flex;gap:16px;color:var(--text-muted);font-size:.8rem;margin-top:auto;padding-top:14px;border-top:1px solid var(--border-subtle)}
.event-meta i{margin-right:4px}
.card-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:.9rem;transition:gap .25s}
.card-link:hover{gap:12px}

/* Tags */
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:.78rem;border:1px solid var(--border-subtle);color:var(--text-secondary);white-space:nowrap}
.tag-brand{color:var(--brand);border-color:rgba(200,255,46,.4);background:rgba(200,255,46,.08)}

/* Filter chips */
.filter-chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.filter-chips .chip{border-color:var(--border-subtle)}
.filter-chips .chip.active{background:var(--brand);border-color:var(--brand);color:#0A0D10}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
@media(max-width:1024px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stats-grid{grid-template-columns:1fr}}
.stat-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:20px;padding:32px 24px;text-align:center;transition:all .3s}
.stat-card:hover{border-color:rgba(200,255,46,.4);transform:translateY(-4px)}
.stat-num{font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--brand);line-height:1;display:block}
.stat-label{color:var(--text-secondary);font-size:.9rem;margin-top:12px;display:block}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
@media(max-width:1024px){.steps-grid{grid-template-columns:1fr}}
.step-item{position:relative;padding:32px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:20px;transition:all .3s}
.step-item:hover{border-color:rgba(200,255,46,.45);transform:translateY(-4px)}
.step-num{width:44px;height:44px;border-radius:12px;background:var(--brand);color:#0A0D10;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;margin-bottom:20px}
.step-item h3{font-size:1.2rem;font-weight:600;margin-bottom:8px}
.step-item p{color:var(--text-secondary);font-size:.92rem}

/* FAQ */
.faq-list{max-width:840px;margin-top:32px}
.faq-item{border-bottom:1px solid var(--border-subtle)}
.faq-q{display:flex;justify-content:space-between;align-items:center;width:100%;padding:22px 0;cursor:pointer;font-size:1.05rem;font-weight:600;color:var(--text-primary);background:transparent;border:none;text-align:left;transition:color .25s}
.faq-q:hover{color:var(--brand)}
.faq-q .icon{transition:transform .3s;color:var(--brand);font-size:1.3rem;font-weight:400;display:inline-flex;width:24px;height:24px;align-items:center;justify-content:center}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-secondary);line-height:1.7;font-size:.95rem}
.faq-item.open .faq-a{max-height:300px;padding-bottom:24px}

/* CTA */
.cta-section{position:relative;overflow:hidden;background:var(--bg-elevated)}
.cta-section::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(200,255,46,.12),transparent 70%);top:-120px;right:-80px;pointer-events:none}
.cta-box{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;background:var(--bg-card);border:1px solid rgba(200,255,46,.22);border-radius:24px;padding:48px}
@media(max-width:768px){.cta-box{grid-template-columns:1fr;padding:32px 24px}}
.cta-box h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.25;margin-bottom:12px}
.cta-box p{color:var(--text-secondary);max-width:440px}
.cta-form{display:flex;flex-direction:column;gap:14px}
.form-field label{font-size:.875rem;color:var(--text-secondary);margin-bottom:6px;display:block}
.form-field input,.form-field select{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--border-subtle);border-radius:10px;padding:14px 16px;color:var(--text-primary);font-size:.95rem;transition:all .25s;outline:none}
.form-field input::placeholder{color:var(--text-muted)}
.form-field input:focus,.form-field select:focus{border-color:rgba(200,255,46,.7);box-shadow:0 0 0 3px rgba(200,255,46,.2);background:rgba(255,255,255,.06)}

/* Footer */
.site-footer{background:#07090C;border-top:1px solid var(--border-subtle);padding:64px 0 24px;margin-top:0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:12px;max-width:340px}
.footer-col h4{font-size:1rem;margin-bottom:16px;color:var(--text-primary);font-weight:600}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col li{color:var(--text-secondary);font-size:.9rem}
.footer-col a{transition:color .2s}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{color:var(--text-muted)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-subtle);padding-top:24px;color:var(--text-muted);font-size:.85rem;flex-wrap:wrap;gap:12px}
.back-top{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);padding:8px 18px;border-radius:999px;font-size:.85rem;transition:all .25s}
.back-top:hover{border-color:var(--brand);color:var(--brand)}

/* Reveal */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .container{padding:0 24px}
  .footer-top{grid-template-columns:1fr 1fr}
  .section{padding:72px 0}
}
@media(max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .header-inner{flex-wrap:wrap;height:auto;padding-top:14px;padding-bottom:12px;gap:12px}
  .site-header.scrolled .header-inner{height:auto;padding-top:12px;padding-bottom:10px}
  .nav-chips{order:3;width:100%;overflow-x:auto;display:flex;flex-wrap:nowrap;scrollbar-width:none;margin:0 -20px;padding:0 20px;-webkit-overflow-scrolling:touch}
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{white-space:nowrap;flex-shrink:0}
  .header-cta{margin-left:auto}
  .hero{padding:72px 0 64px}
  .hero-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .filter-chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -16px;padding:0 16px 8px}
  .filter-chips::-webkit-scrollbar{display:none}
  .filter-chips .chip{flex-shrink:0}
  .stat-card{padding:24px 16px}
  .hero h1{font-size:clamp(2.2rem,11vw,3rem)}
}