/* roulang page: index */
:root {
  --bg-primary: #0B1826;
  --bg-card: #102433;
  --bg-hover: #152D40;
  --bg-deep: #08131F;
  --accent-cyan: #00E0FF;
  --accent-orange: #FF7A1A;
  --text-primary: #F0F6FC;
  --text-secondary: #9FB3C8;
  --text-light: #F4F7FA;
  --border-color: rgba(255,255,255,0.08);
  --border-cyan: rgba(0,224,255,0.35);
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-panel: 20px;
  --radius-badge: 999px;
  --shadow-card: 0 12px 32px rgba(0,0,0,0.35);
  --shadow-card-hover: 0 18px 40px rgba(0,0,0,0.45);
  --shadow-orange: 0 8px 24px rgba(255,122,26,0.25);
  --shadow-cyan: 0 8px 30px rgba(0,224,255,0.15);
  --section-gap: 96px;
  --section-gap-md: 72px;
  --section-gap-sm: 48px;
  --header-height: 72px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "tnum";
  overflow-x: hidden;
}

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

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--accent-cyan);
}

button, input, select, textarea {
  font-family: var(--font-sans);
}

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}

section {
  padding: var(--section-gap) 0;
}

.section-title {
  font-size: 30px;
  line-height: 38px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  color: var(--text-primary);
  position: relative;
}

.section-title .highlight {
  color: var(--accent-cyan);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  margin-top: -32px;
  margin-bottom: 48px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  height: var(--header-height);
  background: rgba(11,24,38,0.55);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

.site-header.scrolled {
  background: rgba(11,24,38,0.94);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.main-nav {
  height: var(--header-height);
  padding: 0;
}

.main-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  font-feature-settings: "tnum";
  line-height: 1;
  box-shadow: 0 0 16px rgba(0,224,255,0.3);
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

.main-nav .nav {
  gap: 4px;
}

.navbar-nav .nav-link {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px !important;
  position: relative;
  transition: color 0.25s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--accent-cyan);
}

.navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transform: translateX(-50%) rotate(0deg);
  transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 24px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.25s;
}

.search-toggle:hover {
  color: var(--accent-cyan);
}

.search-toggle svg {
  width: 20px;
  height: 20px;
}

.btn-download-nav {
  background: var(--accent-orange);
  color: var(--bg-primary);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  border: none;
  height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(255,122,26,0.2);
}

.btn-download-nav:hover {
  background: #ff8c3a;
  color: var(--bg-primary);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255,122,26,0.3);
}

.btn-download-nav:active {
  transform: translateY(1px) scale(0.98);
}

.navbar-toggler {
  border-color: rgba(255,255,255,0.2);
  padding: 6px 10px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 2px var(--accent-cyan);
}

.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(240,246,252,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 140px 0 80px;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11,24,38,0.96) 0%, rgba(11,24,38,0.82) 45%, rgba(11,24,38,0.55) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  padding-right: 30px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,224,255,0.1);
  border: 1px solid rgba(0,224,255,0.25);
  border-radius: var(--radius-badge);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: 44px;
  line-height: 52px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--accent-cyan);
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.btn-hero-primary {
  background: var(--accent-orange);
  color: var(--bg-primary);
  font-size: 16px;
  font-weight: 700;
  padding: 14px 36px;
  border-radius: var(--radius-btn);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 52px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-orange);
}

.btn-hero-primary:hover {
  background: #ff8c3a;
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255,122,26,0.35);
}

.btn-hero-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-hero-secondary {
  background: transparent;
  color: var(--accent-cyan);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-cyan);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 52px;
  transition: all 0.3s ease;
}

.btn-hero-secondary:hover {
  background: rgba(0,224,255,0.12);
  color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-trust span {
  font-size: 13px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-trust svg {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual-wrap {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-panel);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  background: var(--bg-card);
  position: relative;
}

.hero-visual-wrap::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,224,255,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero-visual-wrap img {
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--border-color);
}

.hero-visual-caption {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero-visual-caption strong {
  font-size: 16px;
  color: var(--text-primary);
}

.hero-visual-caption span {
  font-size: 13px;
  color: var(--accent-cyan);
  background: rgba(0,224,255,0.1);
  padding: 4px 12px;
  border-radius: var(--radius-badge);
}

/* ===== Value Cards ===== */
.value-cards-section {
  background: var(--bg-primary);
  position: relative;
}

.value-cards-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-cyan), transparent);
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.value-card::before {
  content: "1";
  position: absolute;
  top: 10px;
  left: 12px;
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-cyan);
  opacity: 0.7;
  transform: rotate(-45deg);
}

.value-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card-hover), 0 0 30px rgba(0,224,255,0.08);
}

.value-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,224,255,0.08);
  border-radius: 12px;
  margin-bottom: 20px;
}

.value-icon svg {
  width: 28px;
  height: 28px;
  color: var(--accent-cyan);
  stroke-width: 1.8;
}

.value-card h3 {
  font-size: 18px;
  line-height: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ===== Screenshot Carousel ===== */
.screenshot-section {
  background: var(--bg-deep);
  position: relative;
}

.screenshot-panel {
  background: #0D1F2E;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  padding: 24px;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.carousel-slide-img {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--bg-card);
}

.carousel-slide-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-caption-custom {
  padding: 20px 0 4px;
  text-align: center;
}

.carousel-caption-custom h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.carousel-caption-custom p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.screenshot-carousel .carousel-indicators {
  position: static;
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 6px;
}

.screenshot-carousel .carousel-indicators button {
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.2);
  border: none;
  transition: width 0.3s ease, background 0.3s ease;
}

.screenshot-carousel .carousel-indicators button.active {
  width: 48px;
  background: var(--accent-cyan);
}

.screenshot-carousel .carousel-control-prev,
.screenshot-carousel .carousel-control-next {
  width: 44px;
  height: 44px;
  background: rgba(11,24,38,0.6);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.3s, border-color 0.3s, box-shadow 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshot-carousel:hover .carousel-control-prev,
.screenshot-carousel:hover .carousel-control-next {
  opacity: 1;
}

.screenshot-carousel .carousel-control-prev:hover,
.screenshot-carousel .carousel-control-next:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0,224,255,0.2);
  opacity: 1;
}

.carousel-arrow-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
}

/* ===== System Requirements ===== */
.sysreq-section {
  background: var(--bg-primary);
}

.sysreq-left {
  padding-right: 40px;
}

.sysreq-left h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 38px;
  margin-bottom: 16px;
}

.sysreq-left p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.sysreq-platforms {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.platform-chip:hover {
  border-color: var(--border-cyan);
}

.platform-chip svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
}

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

.sysreq-card {
  background: transparent;
  border: 1px solid var(--border-color);
  border-bottom: 1px solid rgba(0,224,255,0.3);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.sysreq-card:hover {
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-cyan);
}

.sysreq-card .req-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,224,255,0.08);
  border-radius: 8px;
  margin-bottom: 12px;
}

.sysreq-card .req-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
}

.sysreq-card .req-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.sysreq-card .req-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ===== Testimonials ===== */
.testimonials-section {
  background: var(--bg-deep);
}

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

.testimonial-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  position: relative;
  border: 1px solid var(--border-color);
  transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent-cyan), transparent);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.testimonial-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0,224,255,0.2);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  overflow: hidden;
  flex-shrink: 0;
}

.testimonial-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 10px;
}

.testimonial-stars svg {
  width: 16px;
  height: 16px;
  color: var(--accent-orange);
  fill: var(--accent-orange);
}

.testimonial-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.testimonial-user {
  font-size: 13px;
  color: var(--text-secondary);
}

.testimonial-user strong {
  color: var(--text-primary);
  font-weight: 600;
}

.testimonial-platform {
  display: inline-block;
  background: rgba(0,224,255,0.08);
  color: var(--accent-cyan);
  padding: 2px 8px;
  border-radius: var(--radius-badge);
  font-size: 12px;
  margin-left: 8px;
}

/* ===== News Section ===== */
.news-section {
  background: var(--bg-primary);
}

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

.news-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 28px;
  border: 1px solid var(--border-color);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  height: 100%;
}

.news-card:hover {
  border-color: var(--border-cyan);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.news-card-meta .badge-cat {
  background: rgba(0,224,255,0.12);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
}

.news-card-meta .news-time {
  font-size: 13px;
  color: var(--text-secondary);
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 24px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.news-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.news-card .read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.news-card .read-more:hover {
  gap: 10px;
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px dashed var(--border-color);
}

.news-empty .empty-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  color: var(--text-secondary);
}

.news-empty p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* ===== Download CTA ===== */
.download-cta-section {
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

.download-cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(0,224,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.download-cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.download-cta-inner h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 38px;
  margin-bottom: 16px;
}

.download-cta-inner h2 span {
  color: var(--accent-cyan);
}

.download-cta-inner > p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 32px;
}

.download-button-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.btn-download-primary {
  background: var(--accent-orange);
  color: var(--bg-primary);
  font-size: 16px;
  font-weight: 700;
  padding: 14px 36px;
  border-radius: var(--radius-btn);
  border: none;
  height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-orange);
}

.btn-download-primary:hover {
  background: #ff8c3a;
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(255,122,26,0.35);
}

.btn-download-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-download-secondary {
  background: transparent;
  color: var(--accent-cyan);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-cyan);
  height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.btn-download-secondary:hover {
  background: rgba(0,224,255,0.12);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.download-version-info {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.download-version-info span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.download-version-info svg {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
}

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

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

.faq-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

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

.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--border-cyan);
  box-shadow: 0 4px 24px rgba(0,224,255,0.06);
}

.faq-accordion .accordion-button {
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 24px;
  border: none;
  position: relative;
}

.faq-accordion .accordion-button::after {
  content: "+";
  background: none;
  font-size: 24px;
  font-weight: 300;
  color: var(--accent-cyan);
  width: auto;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background: none;
  color: var(--accent-cyan);
}

.faq-accordion .accordion-button:not(.collapsed) {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: none;
}

.faq-accordion .accordion-button:focus {
  box-shadow: 0 0 0 2px var(--border-cyan);
}

.faq-accordion .accordion-body {
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  padding: 0 24px 20px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .brand-icon {
  width: 32px;
  height: 32px;
  font-size: 18px;
  border-radius: 7px;
}

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

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: border-color 0.3s, color 0.3s, background 0.3s;
}

.footer-social a:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0,224,255,0.06);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

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

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

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s, padding-left 0.25s;
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

.footer-bottom .footer-icp {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom .footer-icp a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.25s;
}

.footer-bottom .footer-icp a:hover {
  color: var(--accent-cyan);
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  :root {
    --section-gap: var(--section-gap-md);
  }

  .site-header {
    height: 64px;
  }

  .main-nav {
    height: 64px;
  }

  .navbar-collapse {
    background: rgba(11,24,38,0.98);
    border-radius: 0 0 16px 16px;
    padding: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }

  .navbar-nav {
    flex-direction: column;
    gap: 4px;
  }

  .nav-actions {
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    justify-content: space-between;
  }

  .hero {
    padding-top: 100px;
    min-height: auto;
  }

  .hero-title {
    font-size: 32px;
    line-height: 40px;
  }

  .hero-visual {
    margin-top: 48px;
  }

  .hero-content {
    padding-right: 0;
  }

  .section-title {
    font-size: 26px;
    line-height: 34px;
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 767.98px) {
  :root {
    --section-gap: var(--section-gap-sm);
  }

  .hero-title {
    font-size: 28px;
    line-height: 36px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
    justify-content: center;
  }

  .value-cards-section .row > div {
    margin-bottom: 16px;
  }

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

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

  .sysreq-left {
    padding-right: 0;
    margin-bottom: 32px;
  }

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

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

  .footer-bottom .footer-icp {
    justify-content: center;
  }

  .download-cta-inner h2 {
    font-size: 24px;
    line-height: 32px;
  }

  .btn-download-primary,
  .btn-download-secondary {
    width: 100%;
    justify-content: center;
  }

  .screenshot-panel {
    padding: 12px;
  }

  .carousel-caption-custom h3 {
    font-size: 18px;
  }

  .news-card {
    padding: 20px;
  }

  .news-card h3 {
    font-size: 16px;
  }

  .hero-visual-wrap {
    max-width: 100%;
  }
}

@media (max-width: 575.98px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-title {
    font-size: 22px;
    line-height: 30px;
    margin-bottom: 32px;
  }

  .brand-text {
    font-size: 17px;
  }

  .brand-icon {
    width: 30px;
    height: 30px;
    font-size: 16px;
  }

  .btn-download-nav {
    padding: 8px 14px;
    font-size: 13px;
  }

  .hero {
    padding: 90px 0 48px;
  }

  .hero-trust {
    flex-direction: column;
    gap: 10px;
  }

  .download-version-info {
    flex-direction: column;
    gap: 6px;
  }
}

/* roulang page: category1 */
:root{
  --bg-primary:#0B1826;--bg-card:#102433;--bg-hover:#152D40;
  --accent:#00E0FF;--accent-glow:rgba(0,224,255,.35);--accent-soft:rgba(0,224,255,.12);
  --cta:#FF7A1A;--cta-dark:#E86A0A;--cta-glow:rgba(255,122,26,.25);
  --text-primary:#F0F6FC;--text-secondary:#9FB3C8;--border-color:rgba(255,255,255,.08);
  --light-bg:#F4F7FA;--radius-card:14px;--radius-btn:10px;--radius-panel:20px;--radius-badge:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35),0 2px 6px rgba(0,0,0,.2);
  --shadow-hover:0 18px 40px rgba(0,0,0,.45),0 0 0 1px rgba(0,224,255,.2),0 0 24px rgba(0,224,255,.08);
  --font-stack:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-stack);font-size:16px;line-height:1.8;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
a:hover{color:var(--accent)}
button{font-family:inherit}
ul{list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:1200px}

/* ---- 导航 ---- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(11,24,38,.55);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--border-color);
  transition:background .3s,box-shadow .3s;
}
.site-header.scrolled{background:rgba(11,24,38,.94);box-shadow:0 8px 30px rgba(0,0,0,.25)}
.main-nav{min-height:72px;padding:0}
.navbar-brand{display:flex;align-items:center;gap:10px;padding:0;margin:0}
.brand-icon{
  width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  background:var(--accent);color:#0B1826;font-size:20px;font-weight:800;
  border-radius:9px;font-style:italic;box-shadow:0 0 16px rgba(0,224,255,.35);line-height:1;
}
.brand-text{font-size:20px;font-weight:800;color:var(--text-primary);letter-spacing:-.02em}
.navbar-nav{gap:6px}
.nav-link{
  font-size:15px;font-weight:500;color:var(--text-primary);padding:8px 16px !important;
  border-radius:8px;position:relative;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0) skewX(-30deg);transform-origin:left;transition:transform .3s;
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1) skewX(-30deg)}
.nav-link:hover,.nav-link.active{color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border-color);
  background:rgba(255,255,255,.04);color:var(--text-primary);
  display:inline-flex;align-items:center;justify-content:center;transition:all .25s;padding:0;
}
.search-toggle svg{width:18px;height:18px}
.search-toggle:hover{border-color:var(--accent);color:var(--accent);box-shadow:0 0 12px rgba(0,224,255,.15)}
.btn-download-nav{
  background:var(--cta);color:#0B1826;font-weight:700;font-size:14px;padding:10px 22px;
  border-radius:var(--radius-btn);border:none;transition:all .25s;
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.btn-download-nav:hover{background:#FF8A35;color:#0B1826;transform:translateY(-2px);box-shadow:0 8px 24px var(--cta-glow)}
.navbar-toggler{border:1px solid var(--border-color) !important;border-radius:8px;padding:6px 10px;background:rgba(255,255,255,.04);box-shadow:none !important}
.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='%23F0F6FC' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* ---- Hero 条 ---- */
.page-hero{position:relative;padding:190px 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,24,38,.85) 0%,rgba(11,24,38,.62) 50%,rgba(11,24,38,.94) 100%)}
.page-hero::after{
  content:'';position:absolute;top:-140px;right:-140px;width:480px;height:480px;
  background:radial-gradient(circle,rgba(0,224,255,.08),transparent 70%);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);margin-bottom:20px}
.breadcrumb a{color:var(--text-secondary);transition:color .25s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.25)}
.page-hero h1{font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:18px}
.page-hero h1 .brand-strong{color:var(--accent);position:relative}
.page-hero p{font-size:18px;color:var(--text-secondary);max-width:660px;margin-bottom:0;line-height:1.8}
.hero-trust{display:flex;gap:20px;margin-top:28px;flex-wrap:wrap}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}
.hero-trust svg{width:16px;height:16px;color:var(--accent)}

/* ---- 筛选标签 ---- */
.tag-filter{padding:52px 0 8px;position:relative;z-index:2}
.filter-wrap{
  background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-panel);
  padding:22px 24px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  box-shadow:var(--shadow-card);
}
.filter-badge{
  display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:var(--radius-badge);
  background:rgba(255,255,255,.02);border:1px solid var(--border-color);color:var(--text-secondary);
  font-size:14px;font-weight:500;transition:all .25s;cursor:pointer;user-select:none;
}
.filter-badge:hover,.filter-badge.active{background:var(--accent-soft);border-color:var(--accent-glow);color:var(--accent)}
.filter-badge svg{width:14px;height:14px}

/* ---- 资讯列表 ---- */
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.35;margin-bottom:10px}
.section-head p{color:var(--text-secondary);font-size:15px;max-width:560px;margin:0 auto}
.section-head .accent-line{width:48px;height:3px;background:var(--accent);border-radius:99px;margin:16px auto 0}
.news-section{padding:56px 0 32px}
.news-card{
  display:flex;flex-direction:row;background:var(--bg-card);border:1px solid var(--border-color);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:all .3s;margin-bottom:24px;height:100%;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--accent-glow);box-shadow:var(--shadow-hover)}
.news-thumb{width:250px;min-width:250px;min-height:185px;overflow:hidden;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-thumb::after{
  content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 60%,rgba(16,36,51,.3));
}
.news-content{padding:26px 30px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.badge-cat{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--radius-badge);
  background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:600;line-height:1.4;
}
.news-time{font-size:13px;color:var(--text-secondary);display:inline-flex;align-items:center;gap:6px}
.news-time svg{width:14px;height:14px;opacity:.7}
.news-content h3{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:10px;color:var(--text-primary);transition:color .25s}
.news-content h3 a:hover{color:var(--accent)}
.news-desc{font-size:14px;color:var(--text-secondary);line-height:1.75;margin-bottom:16px;flex:1}
.news-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);transition:gap .25s;width:fit-content;
}
.news-more:hover{gap:10px;color:var(--accent)}
.news-more svg{width:16px;height:16px}

/* ---- 分页器 ---- */
.pagination-wrap{padding:16px 0 56px;display:flex;justify-content:center}
.pagination{margin:0;gap:8px}
.pagination .page-link{
  width:42px;height:42px;display:flex;align-items:center;justify-content:center;
  border-radius:10px !important;background:var(--bg-card);border:1px solid var(--border-color);
  color:var(--text-secondary);font-size:14px;font-weight:500;transition:all .25s;padding:0;
}
.pagination .page-link:hover{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.pagination .page-item.active .page-link{background:var(--accent);border-color:var(--accent);color:#0B1826;font-weight:700}
.pagination .page-item.disabled .page-link{background:rgba(255,255,255,.02);color:rgba(255,255,255,.2);border-color:var(--border-color)}
.pagination .page-link:focus{box-shadow:0 0 0 3px rgba(0,224,255,.15)}

/* ---- 统计区 ---- */
.stats-section{padding:16px 0 56px}
.stat-card{
  text-align:center;padding:36px 24px;background:var(--bg-card);border:1px solid var(--border-color);
  border-radius:var(--radius-card);position:relative;overflow:hidden;height:100%;transition:all .3s;
}
.stat-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:0;transition:opacity .3s;
}
.stat-card:hover::before{opacity:1}
.stat-card:hover{transform:translateY(-3px)}
.stat-num{font-size:42px;font-weight:800;color:var(--accent);line-height:1.2;font-feature-settings:"tnum"}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:8px}
.stat-card .stat-icon{width:34px;height:34px;margin:0 auto 14px;color:var(--accent);opacity:.7}
.stat-card .stat-icon svg{width:100%;height:100%}

/* ---- 订阅 CTA ---- */
.newsletter-section{padding:24px 0 48px}
.newsletter-inner{
  background:linear-gradient(135deg,#0D1F2E,#102433);border:1px solid var(--border-color);
  border-radius:var(--radius-panel);padding:52px 48px;text-align:center;position:relative;overflow:hidden;
  box-shadow:var(--shadow-card);
}
.newsletter-inner::before{
  content:'';position:absolute;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,224,255,.14),transparent 70%);top:-120px;right:-120px;pointer-events:none;
}
.newsletter-inner::after{
  content:'';position:absolute;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.06),transparent 70%);bottom:-100px;left:-100px;pointer-events:none;
}
.newsletter-inner .container-inner{position:relative;z-index:2}
.newsletter-inner h2{font-size:28px;font-weight:800;line-height:1.4;margin-bottom:12px}
.newsletter-inner p{color:var(--text-secondary);font-size:15px;max-width:540px;margin:0 auto 30px;line-height:1.8}
.newsletter-form{display:flex;gap:12px;max-width:500px;margin:0 auto}
.newsletter-form input{
  flex:1;height:50px;padding:0 20px;border-radius:var(--radius-btn);border:1px solid var(--border-color);
  background:rgba(255,255,255,.04);color:var(--text-primary);font-size:14px;transition:all .25s;min-width:0;
}
.newsletter-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,224,255,.12)}
.newsletter-form input::placeholder{color:var(--text-secondary)}
.btn-subscribe{
  height:50px;padding:0 30px;background:var(--cta);color:#0B1826;font-weight:700;
  border-radius:var(--radius-btn);border:none;transition:all .25s;white-space:nowrap;font-size:15px;
  display:inline-flex;align-items:center;gap:8px;
}
.btn-subscribe:hover{background:#FF8A35;transform:translateY(-2px);box-shadow:0 8px 24px var(--cta-glow);color:#0B1826}
.btn-subscribe:active{transform:translateY(0)}

/* ---- 迷你 FAQ ---- */
.mini-faq-section{padding:24px 0 96px}
.mini-faq-section .section-head{margin-bottom:36px}
.mini-faq-wrap{max-width:860px;margin:0 auto}
.mini-faq .accordion-item{
  background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px !important;
  margin-bottom:12px;overflow:hidden;
}
.mini-faq .accordion-button{
  background:transparent;color:var(--text-primary);font-size:16px;font-weight:600;
  padding:20px 24px;box-shadow:none;display:flex;align-items:center;gap:14px;
}
.mini-faq .accordion-button::before{
  content:'+';font-size:22px;font-weight:400;color:var(--accent);transition:transform .3s;line-height:1;
  flex-shrink:0;
}
.mini-faq .accordion-button::after{display:none}
.mini-faq .accordion-button:not(.collapsed){background:rgba(0,224,255,.04);color:var(--accent);border-bottom:1px solid var(--border-color)}
.mini-faq .accordion-button:not(.collapsed)::before{transform:rotate(45deg)}
.mini-faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(0,224,255,.1)}
.mini-faq .accordion-body{color:var(--text-secondary);font-size:15px;line-height:1.8;padding:20px 24px;background:transparent}

/* ---- 页脚 ---- */
.site-footer{background:#08131F;border-top:1px solid var(--border-color);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;margin-bottom:44px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .brand-icon{width:34px;height:34px;font-size:18px;border-radius:8px}
.footer-logo .brand-text{font-size:18px}
.footer-brand p{color:var(--text-secondary);font-size:14px;line-height:1.8;margin-bottom:20px;max-width:360px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border-color);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .25s;
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent);box-shadow:0 0 12px rgba(0,224,255,.15)}
.footer-social svg{width:18px;height:18px}
.footer-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:20px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--text-secondary);font-size:14px;transition:all .25s;display:inline-block}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-contact p{
  display:flex;align-items:flex-start;gap:10px;color:var(--text-secondary);font-size:14px;margin-bottom:14px;line-height:1.6;
}
.footer-contact svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;color:var(--accent)}
.footer-contact a{color:var(--text-secondary)}
.footer-contact a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid var(--border-color);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--text-secondary);
}
.footer-links-bottom{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.footer-links-bottom a{color:var(--text-secondary)}
.footer-links-bottom a:hover{color:var(--accent)}
.footer-links-bottom .dot{opacity:.4}

/* ---- 响应式 ---- */
@media (max-width:991.98px){
  .main-nav{min-height:64px}
  .navbar-collapse{
    background:rgba(11,24,38,.97);border-radius:14px;padding:18px;margin-top:14px;
    border:1px solid var(--border-color);box-shadow:0 20px 40px rgba(0,0,0,.4);
  }
  .nav-actions{margin-top:14px;padding-top:14px;border-top:1px solid var(--border-color)}
  .nav-link{padding:10px 14px !important}
  .nav-link::after{left:14px;right:14px}
  .page-hero{padding-top:160px}
  .page-hero h1{font-size:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767.98px){
  .news-card{flex-direction:column}
  .news-thumb{width:100%;min-width:0;height:210px}
  .news-thumb::after{background:linear-gradient(180deg,transparent 60%,rgba(16,36,51,.4))}
  .news-content{padding:22px 22px 24px}
  .section-head h2{font-size:24px}
  .stat-num{font-size:34px}
  .newsletter-inner{padding:36px 24px}
  .page-hero p{font-size:16px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media (max-width:575.98px){
  .page-hero{padding:140px 0 60px}
  .page-hero h1{font-size:28px}
  .newsletter-form{flex-direction:column}
  .btn-subscribe{width:100%;justify-content:center}
  .tag-filter{padding:40px 0 4px}
  .filter-wrap{padding:16px 14px;gap:8px}
  .filter-badge{padding:7px 14px;font-size:13px}
  .news-content h3{font-size:18px}
  .stat-num{font-size:30px}
  .hero-trust{gap:12px}
  .pagination .page-link{width:38px;height:38px;font-size:13px}
}

/* roulang page: article */
:root {
  --bg-dark: #0B1826;
  --bg-card: #102433;
  --bg-card-hover: #152D40;
  --accent-cyan: #00E0FF;
  --accent-orange: #FF7A1A;
  --text-light: #F0F6FC;
  --text-muted: #9FB3C8;
  --border-light: rgba(255,255,255,0.08);
  --border-glow: rgba(0,224,255,0.35);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 12px 32px rgba(0,0,0,0.35), 0 2px 6px rgba(0,0,0,0.2);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --section-space: 96px;
}
html, body { overflow-x: hidden; }
body {
  font-family: var(--font-sans);
  font-variant-numeric: tnum;
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
*, *::before, *::after { box-sizing: border-box; }
a { color: inherit; text-decoration: none; }
a:hover { color: inherit; }
img { max-width: 100%; }
button { background: none; border: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 2px; }

/* 容器 */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn { border-radius: var(--radius-sm); font-weight: 600; padding: 12px 28px; transition: all .3s; font-size: 15px; }
.btn-primary-custom {
  background: var(--accent-orange);
  color: var(--bg-dark);
  border: none;
  box-shadow: 0 8px 24px rgba(255,122,26,0.25);
}
.btn-primary-custom:hover {
  background: #FF8B36;
  color: var(--bg-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255,122,26,0.35);
}
.btn-outline-cyan {
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  background: transparent;
}
.btn-outline-cyan:hover {
  background: rgba(0,224,255,0.12);
  color: var(--accent-cyan);
  border-color: rgba(0,224,255,0.7);
  transform: translateY(-2px);
}
.btn-secondary-custom {
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-light);
  background: rgba(255,255,255,0.04);
}
.btn-secondary-custom:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

/* 导航 */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  background: rgba(11,24,38,0.55);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--border-light);
  transition: background .35s, box-shadow .35s;
}
.site-header.scrolled {
  background: rgba(11,24,38,0.94);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.main-nav { min-height: 72px; padding: 0; }
.navbar-brand { display: flex; align-items: center; gap: 10px; padding: 0; }
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent-cyan), #009CC0);
  color: var(--bg-dark);
  font-size: 20px;
  font-weight: 900;
  border-radius: 10px;
  line-height: 1;
}
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; color: var(--text-light); }
.navbar-nav { gap: 4px; }
.nav-link {
  color: var(--text-muted) !important;
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px !important;
  position: relative;
  transition: color .25s;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 18px; right: 18px; bottom: 2px;
  height: 2px;
  background: var(--accent-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}
.nav-link:hover { color: var(--accent-cyan) !important; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--text-light) !important; }
.nav-link.active::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-toggle {
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  transition: all .25s;
}
.search-toggle svg { width: 18px; height: 18px; }
.search-toggle:hover { border-color: rgba(0,224,255,0.5); color: var(--accent-cyan); }
.btn-download-nav {
  background: var(--accent-orange);
  color: var(--bg-dark);
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  transition: all .25s;
  box-shadow: 0 6px 18px rgba(255,122,26,0.22);
}
.btn-download-nav:hover { background: #FF8B36; color: var(--bg-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(255,122,26,0.3); }
.navbar-toggler { border-color: rgba(255,255,255,0.2); padding: 6px 10px; border-radius: 8px; }
.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, 224, 255, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar-toggler:focus { box-shadow: 0 0 0 2px rgba(0,224,255,0.5); }

/* 文章 Hero 区 */
.article-hero {
  position: relative;
  padding: 140px 0 64px;
  background: var(--bg-dark) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.article-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(11,24,38,0.78);
  z-index: 0;
}
.article-hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,224,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,224,255,0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 0;
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.breadcrumb-nav a { color: var(--text-muted); transition: color .25s; }
.breadcrumb-nav a:hover { color: var(--accent-cyan); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }
.breadcrumb-current { color: rgba(240,246,252,0.85); max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-head { max-width: 880px; }
.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(0,224,255,0.12);
  border: 1px solid rgba(0,224,255,0.25);
  color: var(--accent-cyan);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}
.article-title {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-light);
  margin-bottom: 24px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--text-muted);
  font-size: 14px;
  padding-bottom: 8px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-item svg { width: 16px; height: 16px; color: var(--accent-cyan); }

/* 文章正文区 */
.article-body {
  background: #F4F7FA;
  padding: 72px 0 80px;
}
.article-content-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: #26323F;
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 27px;
  font-weight: 700;
  color: #0B1826;
  margin: 44px 0 20px;
  padding-left: 16px;
  border-left: 4px solid var(--accent-cyan);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: #0B1826;
  margin: 34px 0 16px;
}
.article-content a { color: #008A9A; text-decoration: underline; transition: color .25s; }
.article-content a:hover { color: #00A6BF; text-decoration: none; }
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content ul li::marker { color: var(--accent-cyan); }
.article-content ol li::marker { color: #008A9A; font-weight: 600; }
.article-content blockquote {
  margin: 32px 0;
  padding: 20px 24px;
  background: rgba(0,224,255,0.07);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 8px;
  color: #33475B;
  font-size: 15px;
}
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  margin: 28px 0;
}
.article-content pre {
  background: var(--bg-dark);
  color: #F0F6FC;
  padding: 20px 24px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}
.article-content code {
  background: #E8EEF5;
  color: #007E8F;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.article-content pre code { background: transparent; color: inherit; padding: 0; border-radius: 0; font-size: inherit; }
.article-content table { width: 100%; margin: 24px 0; border-collapse: collapse; }
.article-content th, .article-content td { padding: 12px 16px; border: 1px solid #DDE4EB; font-size: 15px; }
.article-content th { background: #E8EEF5; font-weight: 600; }

/* 文章底部工具条 */
.article-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  max-width: 780px;
  margin: 52px auto 0;
  padding-top: 28px;
  border-top: 1px solid #DDE4EB;
}
.article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.tag-label { font-size: 14px; color: #8899A8; font-weight: 600; }
.tag-chip {
  display: inline-block;
  padding: 6px 14px;
  background: #E8EEF5;
  color: #33475B;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all .25s;
}
.tag-chip:hover { background: rgba(0,224,255,0.15); color: #007E8F; }
.article-share { display: flex; align-items: center; gap: 10px; }
.share-label { font-size: 14px; color: #8899A8; font-weight: 600; }
.share-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: #E8EEF5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #33475B;
  transition: all .25s;
}
.share-btn svg { width: 17px; height: 17px; }
.share-btn:hover { background: var(--accent-cyan); color: var(--bg-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,224,255,0.25); }
.share-btn.copied { background: var(--accent-orange); color: var(--bg-dark); }

/* 上一篇 / 下一篇 */
.article-pager {
  max-width: 780px;
  margin: 32px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.pager-prev,
.pager-next {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  transition: all .25s;
}
.pager-prev span,
.pager-next span {
  font-size: 13px;
  color: #8899A8;
  font-weight: 500;
}
.pager-prev strong,
.pager-next strong {
  font-size: 15px;
  color: #1F2A36;
  font-weight: 600;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pager-prev:hover,
.pager-next:hover {
  border-color: rgba(0,224,255,0.6);
  box-shadow: 0 10px 28px rgba(0,224,255,0.12);
  transform: translateY(-2px);
}
.pager-prev { align-items: flex-start; text-align: left; }
.pager-next { align-items: flex-end; text-align: right; }

/* 空态 */
.article-empty {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  padding: 64px 24px;
}
.empty-icon {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  background: #E8EEF5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}
.empty-icon svg { width: 36px; height: 36px; }
.article-empty p { font-size: 18px; color: #33475B; font-weight: 600; margin-bottom: 24px; }

/* 相关推荐 */
.related-posts {
  background: var(--bg-dark);
  padding: var(--section-space) 0;
  position: relative;
}
.related-posts::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,224,255,0.3), transparent);
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 16px;
}
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 48px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  transition: all .3s;
}
.related-card:hover {
  border-color: rgba(0,224,255,0.4);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35), 0 0 24px rgba(0,224,255,0.08);
  transform: translateY(-4px);
}
.related-cover {
  position: relative;
  display: block;
  overflow: hidden;
}
.related-cover img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  transition: transform .4s;
}
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-badge {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 14px;
  background: rgba(11,24,38,0.82);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.related-body { padding: 22px 24px 24px; }
.related-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; }
.related-body h3 a { color: var(--text-light); transition: color .25s; }
.related-body h3 a:hover { color: var(--accent-cyan); }
.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}
.read-more {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 14px;
  transition: color .25s;
}
.read-more:hover { color: #66E8FF; }
.related-footer {
  margin-top: 48px;
  text-align: center;
}

/* 页脚 */
.site-footer {
  background: #08131F;
  border-top: 1px solid var(--border-light);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.footer-logo .brand-icon { width: 34px; height: 34px; font-size: 18px; }
.footer-logo .brand-text { font-size: 19px; font-weight: 800; color: var(--text-light); }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 22px; max-width: 340px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all .25s;
}
.footer-social a svg { width: 17px; height: 17px; }
.footer-social a:hover { border-color: rgba(0,224,255,0.4); color: var(--accent-cyan); transform: translateY(-2px); }
.footer-title { font-size: 16px; font-weight: 700; color: var(--text-light); margin-bottom: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: var(--text-muted); transition: all .25s; }
.footer-links a:hover { color: var(--accent-cyan); padding-left: 4px; }
.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.footer-contact svg { width: 16px; height: 16px; color: var(--accent-cyan); flex-shrink: 0; margin-top: 3px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 22px 0;
}
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(159,179,200,0.7);
}
.footer-bottom-inner a { color: rgba(159,179,200,0.7); transition: color .25s; }
.footer-bottom-inner a:hover { color: var(--accent-cyan); }

/* 响应式 */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(11,24,38,0.98);
    padding: 20px;
    border-radius: 0 0 16px 16px;
    margin-top: 8px;
  }
  .navbar-nav { gap: 0; }
  .nav-link { padding: 12px 8px !important; }
  .nav-link::after { display: none; }
  .nav-actions {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
  }
}

@media (max-width: 767.98px) {
  :root { --section-space: 56px; }
  .article-hero { padding: 116px 0 44px; }
  .article-title { font-size: 28px; line-height: 1.35; }
  .breadcrumb-nav { font-size: 13px; margin-bottom: 24px; }
  .article-meta { gap: 14px; font-size: 13px; flex-direction: column; align-items: flex-start; }
  .article-body { padding: 48px 0 56px; }
  .article-content { font-size: 17px; line-height: 1.85; }
  .article-content h2 { font-size: 23px; }
  .article-foot { margin-top: 40px; padding-top: 24px; flex-direction: column; align-items: flex-start; }
  .article-pager { grid-template-columns: 1fr; gap: 16px; }
  .pager-next { align-items: flex-start; text-align: left; }
  .section-title { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .container { padding: 0 20px; }
  .brand-text { font-size: 17px; }
  .brand-icon { width: 32px; height: 32px; font-size: 17px; border-radius: 8px; }
  .main-nav { min-height: 64px; }
  .article-title { font-size: 24px; }
  .related-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
            --bg-deep: #0B1826;
            --bg-card: #102433;
            --bg-hover: #152D40;
            --accent: #00E0FF;
            --accent-rgb: 0, 224, 255;
            --signal: #FF7A1A;
            --signal-rgb: 255, 122, 26;
            --text-main: #F0F6FC;
            --text-sub: #9FB3C8;
            --border: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 224, 255, 0.35);
            --light-bg: #F4F7FA;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-panel: 20px;
            --radius-badge: 999px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.2);
            --shadow-glow: 0 12px 40px rgba(0, 224, 255, 0.1);
            --section-space: 96px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-deep);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-feature-settings: "tnum";
        }

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        input,
        textarea,
        select {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-space) 0;
        }

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

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

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: 0.08em;
            color: var(--accent);
            background: rgba(0, 224, 255, 0.1);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
            font-weight: 600;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: clamp(26px, 3vw, 34px);
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0;
            line-height: 1;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            font-size: 15px;
        }

        .btn-signal {
            background: var(--signal);
            color: #13161B;
            border-color: var(--signal);
            height: 48px;
            padding: 0 32px;
            box-shadow: 0 8px 24px rgba(var(--signal-rgb), 0.25);
            font-weight: 700;
        }

        .btn-signal:hover {
            background: #FF8C33;
            color: #13161B;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(var(--signal-rgb), 0.35);
        }

        .btn-signal:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-outline-cyan {
            background: transparent;
            color: var(--accent);
            border-color: rgba(0, 224, 255, 0.5);
            height: 48px;
            padding: 0 28px;
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 224, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

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

        .btn-lg {
            height: 56px;
            padding: 0 40px;
            font-size: 17px;
            border-radius: 12px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 24, 38, 0.55);
            -webkit-backdrop-filter: blur(14px) saturate(160%);
            backdrop-filter: blur(14px) saturate(160%);
            border-bottom: 1px solid var(--border);
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 24, 38, 0.94);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }

        .main-nav {
            min-height: 72px;
            padding: 0;
        }

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

        .brand-icon {
            width: 34px;
            height: 34px;
            background: var(--accent);
            color: var(--bg-deep);
            font-size: 18px;
            font-weight: 800;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transform: skewX(-6deg);
            line-height: 1;
            font-feature-settings: "tnum";
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            color: rgba(240, 246, 252, 0.85) !important;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.25s ease;
        }

        .nav-link:hover {
            color: var(--accent) !important;
        }

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

        .nav-link.active {
            color: var(--accent) !important;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-toggle {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            transition: all 0.2s ease;
        }

        .search-toggle:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: rgba(0, 224, 255, 0.08);
        }

        .search-toggle svg {
            width: 17px;
            height: 17px;
        }

        .btn-download-nav {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 8px;
        }

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

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

        .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='%23F0F6FC' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== 页头 Hero ===== */
        .page-hero {
            position: relative;
            min-height: 56vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 0 80px;
            background: linear-gradient(180deg, rgba(11, 24, 38, 0.75) 0%, rgba(11, 24, 38, 0.55) 50%, rgba(11, 24, 38, 0.92) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 224, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 224, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 224, 255, 0.12);
            border: 1px solid rgba(0, 224, 255, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: clamp(34px, 5vw, 52px);
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-main);
            margin-bottom: 18px;
        }

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

        .page-hero .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(240, 246, 252, 0.75);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 下一场赛事 ===== */
        .next-event-section {
            padding: 96px 0 0;
            position: relative;
        }

        .next-event-card {
            position: relative;
            background: radial-gradient(ellipse at 12% 10%, rgba(0, 224, 255, 0.1), transparent 55%),
                linear-gradient(135deg, #102433 0%, #0D1F2E 100%);
            border: 1px solid rgba(0, 224, 255, 0.45);
            border-radius: 24px;
            box-shadow: 0 0 0 1px rgba(0, 224, 255, 0.12), 0 24px 60px rgba(0, 0, 0, 0.45),
                0 0 60px rgba(0, 224, 255, 0.07);
            overflow: hidden;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }

        .next-event-info {
            padding: 48px 48px 40px;
        }

        .event-tag-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 18px;
        }

        .event-status-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 224, 255, 0.14);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            border: 1px solid rgba(0, 224, 255, 0.25);
        }

        .event-round-tag {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 122, 26, 0.14);
            color: var(--signal);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 122, 26, 0.25);
        }

        .event-name {
            font-size: clamp(24px, 3vw, 32px);
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .event-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .event-info-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .event-info-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 16px;
        }

        .event-info-item .label {
            display: block;
            font-size: 12px;
            color: var(--text-sub);
            margin-bottom: 6px;
            letter-spacing: 0.04em;
        }

        .event-info-item .value {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
        }

        .event-info-item .value.accent {
            color: var(--accent);
        }

        .event-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .event-matchup {
            height: 100%;
            min-height: 340px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: linear-gradient(180deg, rgba(0, 224, 255, 0.04), transparent 40%),
                url('/assets/images/coverpic/cover-8.png') center/cover no-repeat;
            border-left: 1px solid var(--border);
            padding: 40px 24px;
            position: relative;
        }

        .event-matchup::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 24, 38, 0.6), rgba(11, 24, 38, 0.9));
        }

        .team-row {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            width: 100%;
            margin-bottom: 20px;
        }

        .team-block {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .team-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(0, 224, 255, 0.12);
            border: 1px solid rgba(0, 224, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
        }

        .team-block:nth-child(2) .team-icon {
            background: rgba(255, 122, 26, 0.12);
            border-color: rgba(255, 122, 26, 0.3);
            color: var(--signal);
        }

        .team-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .vs-badge {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-sub);
            letter-spacing: 0.04em;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .match-meta {
            position: relative;
            z-index: 1;
            text-align: center;
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 12px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--bg-card), var(--bg-deep));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .stat-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 10px;
        }

        .stat-number span {
            font-size: 24px;
            margin-left: 4px;
            color: var(--text-main);
        }

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

        /* ===== 赛事时间线 ===== */
        .timeline-section {
            padding: var(--section-space) 0;
            position: relative;
        }

        .timeline {
            position: relative;
            max-width: 1080px;
            margin: 0 auto;
            padding: 20px 0 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            transform: translateX(-50%);
            background: linear-gradient(180deg, rgba(0, 224, 255, 0.15), rgba(0, 224, 255, 0.7) 12%, rgba(0, 224, 255, 0.7) 88%, rgba(0, 224, 255, 0.15));
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding-right: 56px;
            margin-bottom: 44px;
        }

        .timeline-item:nth-child(even) {
            margin-left: 50%;
            padding-right: 0;
            padding-left: 56px;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            right: -7px;
            top: 28px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(0, 224, 255, 0.15), 0 0 20px rgba(0, 224, 255, 0.5);
            z-index: 2;
        }

        .timeline-item:nth-child(even)::after {
            right: auto;
            left: -7px;
        }

        .timeline-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 28px 24px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .timeline-card:hover {
            border-color: rgba(0, 224, 255, 0.3);
            transform: translateY(-3px);
        }

        .timeline-card-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .timeline-card-head h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
        }

        .timeline-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .timeline-status.done {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-sub);
            border: 1px solid var(--border);
        }

        .timeline-status.live {
            background: rgba(255, 122, 26, 0.14);
            color: var(--signal);
            border: 1px solid rgba(255, 122, 26, 0.25);
        }

        .timeline-status.upcoming {
            background: rgba(0, 224, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(0, 224, 255, 0.25);
        }

        .timeline-date {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 6px;
        }

        .timeline-card p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== 赛事特色 ===== */
        .feature-section {
            padding: var(--section-space) 0;
            background: linear-gradient(180deg, var(--bg-deep), #0D1F2E, var(--bg-deep));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feature-media {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .feature-media .media-main {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .feature-media .media-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

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

        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px;
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .feature-item:hover {
            border-color: rgba(0, 224, 255, 0.35);
            transform: translateX(4px);
        }

        .feature-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(0, 224, 255, 0.1);
            border: 1px solid rgba(0, 224, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }

        .feature-icon svg {
            width: 20px;
            height: 20px;
        }

        .feature-text h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .feature-text p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== 合作伙伴 ===== */
        .partners-section {
            padding: var(--section-space) 0;
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .partner-logo {
            height: 88px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 14px;
            color: var(--text-sub);
            font-size: 16px;
            font-weight: 700;
            letter-spacing: 0.06em;
            transition: all 0.25s ease;
            cursor: default;
        }

        .partner-logo:hover {
            border-color: rgba(0, 224, 255, 0.3);
            color: var(--accent);
            background: var(--bg-hover);
            transform: translateY(-2px);
        }

        /* ===== CTA 下载 ===== */
        .cta-section {
            padding: 0 0 var(--section-space);
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.06), rgba(11, 24, 38, 0.9) 42%, rgba(255, 122, 26, 0.08)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-radius: 24px;
            border: 1px solid var(--border);
            padding: 80px 48px;
            text-align: center;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 120%, rgba(0, 224, 255, 0.15), transparent 60%);
            pointer-events: none;
        }

        .cta-box h2 {
            position: relative;
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cta-box p {
            position: relative;
            font-size: 16px;
            color: var(--text-sub);
            max-width: 540px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-buttons {
            position: relative;
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .version-info {
            position: relative;
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            letter-spacing: 0.02em;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #08131F;
            border-top: 1px solid var(--border);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 340px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            transition: all 0.2s ease;
        }

        .footer-social a:hover {
            color: var(--accent);
            border-color: rgba(0, 224, 255, 0.3);
            background: rgba(0, 224, 255, 0.08);
            transform: translateY(-2px);
        }

        .footer-social svg {
            width: 17px;
            height: 17px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-links {
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

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

        .footer-contact p {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .footer-contact svg {
            width: 17px;
            height: 17px;
            flex-shrink: 0;
            margin-top: 3px;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
        }

        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-collapse {
                padding: 16px 0;
            }

            .navbar-nav {
                gap: 2px;
                margin-bottom: 12px;
            }

            .nav-link {
                padding: 10px 12px !important;
                font-size: 16px;
            }

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

            .nav-actions {
                padding-top: 8px;
                border-top: 1px solid var(--border);
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .event-info-list {
                grid-template-columns: repeat(3, 1fr);
            }

            .next-event-info {
                padding: 36px 28px;
            }

            .event-matchup {
                border-left: none;
                border-top: 1px solid var(--border);
                min-height: 260px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 64px;
            }

            .page-hero {
                min-height: 50vh;
                padding: 120px 0 64px;
            }

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

            .page-hero .hero-sub {
                font-size: 15px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .next-event-card {
                border-radius: 18px;
            }

            .next-event-info {
                padding: 28px 20px;
            }

            .event-info-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .event-actions .btn {
                width: 100%;
            }

            .event-matchup {
                min-height: 220px;
                padding: 28px 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 24px 12px;
            }

            .stat-number {
                font-size: 30px;
            }

            .stat-label {
                font-size: 13px;
            }

            .timeline::before {
                left: 9px;
            }

            .timeline-item,
            .timeline-item:nth-child(even) {
                width: 100%;
                margin-left: 0;
                padding: 0 0 32px 36px;
            }

            .timeline-item::after,
            .timeline-item:nth-child(even)::after {
                left: 1px;
                right: auto;
            }

            .timeline-card {
                padding: 20px;
            }

            .feature-media {
                grid-template-columns: 1fr;
                gap: 12px;
                margin-bottom: 24px;
            }

            .feature-item {
                padding: 16px;
            }

            .partners-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .partner-logo {
                height: 70px;
                font-size: 14px;
            }

            .cta-box {
                padding: 52px 24px;
                border-radius: 18px;
            }

            .cta-buttons .btn {
                width: 100%;
                max-width: 340px;
            }

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

            .footer-bottom-inner {
                justify-content: center;
                text-align: center;
            }

            .section-head {
                margin-bottom: 32px;
            }
        }

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

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

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

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

            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }
        }

/* roulang page: category3 */
:root {
      --bg-deep: #0B1826;
      --bg-card: #102433;
      --bg-hover: #152D40;
      --bg-footer: #08131F;
      --brand-cyan: #00E0FF;
      --accent-orange: #FF7A1A;
      --text-main: #F0F6FC;
      --text-sub: #9FB3C8;
      --border: rgba(255,255,255,0.08);
      --border-cyan: rgba(0,224,255,0.35);
      --radius-card: 14px;
      --radius-btn: 10px;
      --radius-panel: 20px;
      --shadow-card: 0 12px 32px rgba(0,0,0,0.35);
      --shadow-hover: 0 16px 40px rgba(0,0,0,0.45), 0 0 18px rgba(0,224,255,0.08);
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
      --section-pad: 96px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font-sans);
      background: var(--bg-deep);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    body.no-scroll { overflow: hidden; }
    img { max-width: 100%; }
    a { text-decoration: none; color: inherit; transition: color 0.25s ease; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    button { font-family: inherit; }

    .container { max-width: 1200px; }

    h1, h2, h3, h4, h5, h6 { line-height: 1.3; margin: 0 0 0.5em; }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1050;
      background: rgba(11, 24, 38, 0.55);
      -webkit-backdrop-filter: blur(14px) saturate(160%);
      backdrop-filter: blur(14px) saturate(160%);
      border-bottom: 1px solid var(--border);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }
    .site-header.scrolled {
      background: rgba(11, 24, 38, 0.94);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
    }
    .main-nav {
      padding-top: 0;
      padding-bottom: 0;
      min-height: 72px;
    }
    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main) !important;
    }
    .navbar-brand .brand-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, #00E0FF 0%, #00A8CC 100%);
      color: #0B1826;
      font-weight: 800;
      font-size: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 14px rgba(0, 224, 255, 0.35);
      flex-shrink: 0;
    }
    .navbar-brand .brand-text {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: 0.01em;
    }
    .navbar-nav .nav-link {
      color: var(--text-sub) !important;
      font-size: 15px;
      font-weight: 500;
      padding: 24px 16px !important;
      transition: color 0.25s ease;
      position: relative;
    }
    .navbar-nav .nav-link::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 18px;
      height: 2px;
      background: var(--brand-cyan);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.3s ease;
      border-radius: 2px;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: var(--brand-cyan) !important;
    }
    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link.active::after {
      transform: scaleX(1);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .search-toggle {
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: 50%;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .search-toggle svg { width: 18px; height: 18px; }
    .search-toggle:hover {
      color: var(--brand-cyan);
      border-color: var(--border-cyan);
      box-shadow: 0 0 12px rgba(0, 224, 255, 0.2);
    }
    .btn-download-nav {
      background: var(--accent-orange);
      color: #1A0D00;
      border: none;
      padding: 9px 22px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 14px;
      transition: all 0.25s ease;
      box-shadow: 0 4px 16px rgba(255, 122, 26, 0.25);
      white-space: nowrap;
    }
    .btn-download-nav:hover {
      background: #FF8A35;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(255, 122, 26, 0.35);
      color: #1A0D00;
    }
    .navbar-toggler {
      border-color: var(--border) !important;
      padding: 6px 10px;
    }
    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.25);
    }
    .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='%2300E0FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    @media (max-width: 991.98px) {
      .main-nav { min-height: 64px; }
      .navbar-nav .nav-link {
        padding: 14px 8px !important;
      }
      .navbar-nav .nav-link::after { display: none; }
      .nav-actions {
        padding: 12px 0 6px;
      }
      .nav-actions .search-toggle { display: none; }
      .btn-download-nav { width: 100%; text-align: center; }
    }

    .page-hero {
      position: relative;
      padding: 150px 0 90px;
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-bottom: 1px solid var(--border);
      overflow: hidden;
    }
    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(11,24,38,0.94) 0%, rgba(11,24,38,0.78) 55%, rgba(11,24,38,0.55) 100%);
      z-index: 1;
    }
    .page-hero::after {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0,224,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,224,255,0.04) 1px, transparent 1px);
      background-size: 44px 44px;
      z-index: 1;
    }
    .page-hero .container {
      position: relative;
      z-index: 2;
    }
    .page-hero .breadcrumb {
      display: flex;
      justify-content: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 20px;
      padding: 0;
      background: transparent;
    }
    .page-hero .breadcrumb a {
      color: var(--text-sub);
    }
    .page-hero .breadcrumb a:hover {
      color: var(--brand-cyan);
    }
    .page-hero .breadcrumb-sep {
      opacity: 0.5;
    }
    .page-hero h1 {
      font-size: 52px;
      font-weight: 800;
      letter-spacing: -0.02em;
      text-align: center;
      margin-bottom: 16px;
    }
    .page-hero h1 .highlight {
      color: var(--brand-cyan);
    }
    .page-hero .hero-sub {
      color: var(--text-sub);
      font-size: 17px;
      text-align: center;
      max-width: 560px;
      margin: 0 auto 24px;
      line-height: 1.6;
    }
    .page-hero .hero-badges {
      display: flex;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 224, 255, 0.12);
      color: var(--brand-cyan);
      border-radius: 999px;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 600;
    }
    .hero-badge svg { width: 15px; height: 15px; }

    .section-block {
      padding: var(--section-pad) 0;
      position: relative;
    }
    .section-block.alt-bg {
      background: #0D1F2E;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-head {
      text-align: center;
      margin-bottom: 56px;
    }
    .section-head .section-tag {
      display: inline-block;
      padding: 5px 18px;
      background: rgba(0, 224, 255, 0.12);
      color: var(--brand-cyan);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.05em;
      margin-bottom: 14px;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-head .section-desc {
      color: var(--text-sub);
      font-size: 15px;
      max-width: 520px;
      margin: 0 auto;
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
      position: relative;
    }
    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 28px 24px 24px;
      position: relative;
      transition: all 0.3s ease;
    }
    .step-item:hover {
      transform: translateY(-6px);
      border-color: var(--border-cyan);
      box-shadow: var(--shadow-hover);
    }
    .step-item:not(:last-child)::after {
      content: '';
      position: absolute;
      top: 48px;
      right: -28px;
      width: 28px;
      border-top: 2px dashed rgba(0, 224, 255, 0.35);
      z-index: 1;
    }
    .step-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }
    .step-num {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: rgba(0, 224, 255, 0.12);
      border: 1px solid rgba(0, 224, 255, 0.25);
      color: var(--brand-cyan);
      font-size: 18px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-variant-numeric: tabular-nums;
    }
    .step-icon {
      width: 36px;
      height: 36px;
      color: var(--brand-cyan);
    }
    .step-icon svg {
      width: 100%;
      height: 100%;
    }
    .step-img {
      width: 100%;
      aspect-ratio: 3 / 2;
      object-fit: cover;
      border-radius: 10px;
      margin-bottom: 20px;
      display: block;
      background: #0B1826;
    }
    .step-item h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      margin: 0;
    }

    .requirements-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .requirements-intro {
      padding-right: 24px;
    }
    .requirements-intro h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .requirements-intro p {
      color: var(--text-sub);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .platform-icons {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      margin-top: 24px;
    }
    .platform-icon {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 12px;
      color: var(--brand-cyan);
      font-size: 14px;
      font-weight: 600;
      transition: all 0.25s ease;
    }
    .platform-icon svg { width: 20px; height: 20px; }
    .platform-icon:hover {
      border-color: var(--border-cyan);
      box-shadow: 0 0 14px rgba(0, 224, 255, 0.12);
    }
    .spec-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .spec-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: all 0.3s ease;
    }
    .spec-card:hover {
      border-color: var(--border-cyan);
      box-shadow: var(--shadow-hover);
    }
    .spec-card .spec-icon {
      color: var(--brand-cyan);
      width: 28px;
      height: 28px;
      margin-bottom: 14px;
    }
    .spec-card .spec-icon svg { width: 100%; height: 100%; }
    .spec-card .spec-name {
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 6px;
      letter-spacing: 0.02em;
    }
    .spec-card .spec-value {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.5;
    }

    .faq-accordion .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: var(--border-cyan);
      box-shadow: 0 0 18px rgba(0, 224, 255, 0.08);
    }
    .faq-accordion .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      padding: 20px 24px;
      position: relative;
      box-shadow: none;
    }
    .faq-accordion .accordion-button::after {
      content: '+';
      background-image: none;
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      font-weight: 300;
      color: var(--brand-cyan);
      transform: rotate(0deg);
      transition: transform 0.3s ease;
    }
    .faq-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
      color: var(--brand-cyan);
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      color: var(--brand-cyan);
      background: rgba(0, 224, 255, 0.04);
    }
    .faq-accordion .accordion-button:focus {
      box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.2);
    }
    .faq-accordion .accordion-body {
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.8;
      padding: 12px 24px 22px;
      border-top: 1px solid var(--border);
    }

    .cta-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11,24,38,0.96) 0%, rgba(13,31,46,0.96) 100%),
        url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      border-top: 1px solid var(--border);
      overflow: hidden;
      text-align: center;
      padding: 80px 0;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -100px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(0, 224, 255, 0.12), transparent 70%);
      pointer-events: none;
    }
    .cta-section::after {
      content: '';
      position: absolute;
      bottom: -120px;
      left: -80px;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(255, 122, 26, 0.15), transparent 70%);
      pointer-events: none;
    }
    .cta-inner {
      position: relative;
      z-index: 2;
    }
    .cta-inner h2 {
      font-size: 36px;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 12px;
    }
    .cta-inner h2 .highlight { color: var(--brand-cyan); }
    .cta-inner p {
      color: var(--text-sub);
      font-size: 16px;
      margin-bottom: 32px;
    }
    .cta-buttons {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn-primary-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--accent-orange);
      color: #1A0D00;
      border: none;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-size: 17px;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(255, 122, 26, 0.3);
      transition: all 0.25s ease;
    }
    .btn-primary-cta:hover {
      background: #FF8A35;
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(255, 122, 26, 0.4);
      color: #1A0D00;
    }
    .btn-primary-cta:active {
      transform: translateY(1px);
      box-shadow: 0 4px 12px rgba(255, 122, 26, 0.3);
    }
    .btn-primary-cta svg { width: 20px; height: 20px; }
    .btn-secondary-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: transparent;
      border: 1px solid var(--brand-cyan);
      color: var(--brand-cyan);
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-size: 17px;
      font-weight: 600;
      transition: all 0.25s ease;
    }
    .btn-secondary-cta:hover {
      background: rgba(0, 224, 255, 0.12);
      color: var(--brand-cyan);
      transform: translateY(-2px);
    }
    .cta-meta {
      margin-top: 24px;
      font-size: 14px;
      color: var(--text-sub);
      display: flex;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
    }
    .cta-meta span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .cta-meta svg { width: 14px; height: 14px; opacity: 0.7; }

    .site-footer {
      background: var(--bg-footer);
      border-top: 1px solid var(--border);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 40px;
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .footer-logo .brand-icon {
      width: 34px;
      height: 34px;
      border-radius: 9px;
      background: linear-gradient(135deg, #00E0FF, #00A8CC);
      color: #0B1826;
      font-weight: 800;
      font-size: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .footer-logo .brand-text {
      font-size: 18px;
      font-weight: 800;
    }
    .footer-brand p {
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
      margin: 0 0 20px;
      max-width: 340px;
    }
    .footer-social {
      display: flex;
      gap: 12px;
    }
    .footer-social a {
      width: 36px;
      height: 36px;
      border: 1px solid var(--border);
      border-radius: 10px;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s ease;
    }
    .footer-social a svg { width: 17px; height: 17px; }
    .footer-social a:hover {
      color: var(--brand-cyan);
      border-color: var(--border-cyan);
      box-shadow: 0 0 12px rgba(0, 224, 255, 0.15);
    }
    .footer-title {
      color: var(--text-main);
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a {
      color: var(--text-sub);
      font-size: 14px;
      transition: color 0.25s ease;
    }
    .footer-links a:hover {
      color: var(--brand-cyan);
    }
    .footer-contact p {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: var(--text-sub);
      font-size: 14px;
      margin-bottom: 12px;
    }
    .footer-contact svg {
      width: 18px;
      height: 18px;
      color: var(--brand-cyan);
      flex-shrink: 0;
      margin-top: 2px;
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom p {
      color: var(--text-sub);
      font-size: 13px;
      margin: 0;
    }
    .footer-bottom .footer-beian a {
      color: var(--text-sub);
    }
    .footer-bottom .footer-beian a:hover {
      color: var(--brand-cyan);
    }

    @media (max-width: 991.98px) {
      :root { --section-pad: 72px; }
      .page-hero { padding: 120px 0 64px; }
      .page-hero h1 { font-size: 38px; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
      .step-item:not(:last-child)::after { display: none; }
      .requirements-wrap { grid-template-columns: 1fr; }
      .requirements-intro { padding-right: 0; }
      .cta-inner h2 { font-size: 30px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    }

    @media (max-width: 767.98px) {
      .page-hero h1 { font-size: 32px; }
      .section-head h2 { font-size: 26px; }
      .section-head .section-desc { font-size: 14px; }
      .hero-sub { font-size: 15px !important; }
      .section-block { --section-pad: 56px; }
      .cta-inner h2 { font-size: 26px; }
      .cta-buttons .btn-primary-cta,
      .cta-buttons .btn-secondary-cta {
        width: 100%;
        justify-content: center;
      }
      .cta-meta { flex-direction: column; gap: 8px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    }

    @media (max-width: 575.98px) {
      .steps-grid { grid-template-columns: 1fr; }
      .spec-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }

    :focus-visible {
      outline: 2px solid var(--brand-cyan) !important;
      outline-offset: 2px;
      box-shadow: 0 0 0 4px rgba(0, 224, 255, 0.15);
    }
    ::selection {
      background: rgba(0, 224, 255, 0.25);
      color: #fff;
    }