/* roulang page: index */
:root {
  --primary: #1B5BFF;
  --primary-dark: #1345CC;
  --accent: #FFB800;
  --accent-hover: #FFC833;
  --accent-dark: #E6A600;
  --success: #00A870;
  --bg: #F6F8FC;
  --white: #FFFFFF;
  --text: #1A2233;
  --text-secondary: #5A6478;
  --text-muted: #8A94A8;
  --border: #E5E9F2;
  --shadow-color: rgba(27,91,255,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-digit: "DIN Alternate", "Roboto", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

ul, ol {
  list-style: none;
}

button, input {
  font: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

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

.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.section-head p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: 12px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(27, 91, 255, 0.1);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 10px;
  line-height: 1.4;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
  background: #FFFFFF;
  border-color: var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
}

.logo-text b {
  color: var(--primary);
}

.logo-text span {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-wrap {
  position: relative;
}

.search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}

.search-btn:hover {
  background: rgba(27, 91, 255, 0.08);
  color: var(--primary);
}

.search-box {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 240px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all 0.25s ease;
}

.search-box.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-box input {
  width: 100%;
  font-size: 0.875rem;
  color: var(--text);
}

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

.btn-download-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  background: var(--primary);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.25s;
}

.btn-download-nav:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(27, 91, 255, 0.3);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 999;
  padding: 40px 24px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  display: block;
  padding: 16px 8px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.mobile-menu a.active {
  color: var(--primary);
}

.mobile-menu a.btn-mobile-download {
  margin-top: 16px;
  text-align: center;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 170px 0 100px;
  min-height: 720px;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 91, 255, 0.10), rgba(246, 248, 252, 0.92) 65%);
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 580px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 168, 112, 0.1);
  color: var(--success);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
}

.hero h1 span {
  color: var(--primary);
}

.hero-sub {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 28px;
  line-height: 1.8;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 28px;
  background: var(--accent);
  color: #332600;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px rgba(255, 184, 0, 0.25);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 184, 0, 0.35);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  background: #fff;
  color: var(--primary);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-sm);
  transition: all 0.25s;
}

.btn-secondary:hover {
  background: rgba(27, 91, 255, 0.06);
  border-color: var(--primary-dark);
}

.btn-secondary:active {
  transform: translateY(1px);
}

.hero-version {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.trust-item svg {
  color: var(--success);
  flex-shrink: 0;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(27, 91, 255, 0.18);
}

.stats-wrap {
  position: relative;
  z-index: 10;
  margin-top: -56px;
  margin-bottom: 0;
}

.stats-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(27, 91, 255, 0.1);
  padding: 28px 32px;
}

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

.stat-item .num {
  font-family: var(--font-digit);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: 0.5px;
}

.stat-item .label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== Features ===== */
.features {
  padding: 80px 0 40px;
}

.feature-wide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(27, 91, 255, 0.05);
  align-items: center;
}

.feature-wide img {
  border-radius: 10px;
  width: 100%;
  height: auto;
}

.feature-wide h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-wide p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.25s ease;
  box-shadow: 0 2px 8px rgba(27, 91, 255, 0.05);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(27, 91, 255, 0.12);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: rgba(27, 91, 255, 0.08);
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.feature-link {
  font-size: 0.875rem;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.feature-link:hover {
  gap: 8px;
}

/* ===== Carousel ===== */
.carousel-section {
  background: #fff;
  padding: 80px 0;
}

.carousel-viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  display: flex;
  gap: 20px;
  padding: 8px 8px 24px;
  margin: 0 -8px;
  scrollbar-width: none;
}

.carousel-viewport::-webkit-scrollbar {
  display: none;
}

.carousel-card {
  flex: 0 0 min(320px, 80vw);
  scroll-snap-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(27, 91, 255, 0.08);
  overflow: hidden;
  transition: box-shadow 0.25s;
}

.carousel-card:hover {
  box-shadow: 0 20px 48px rgba(27, 91, 255, 0.14);
}

.carousel-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.carousel-caption {
  padding: 20px 20px 24px;
}

.carousel-caption h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.carousel-caption p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #C6CFE0;
  border: none;
  padding: 0;
  transition: background 0.3s, transform 0.3s;
}

.dot.active {
  background: var(--primary);
  transform: scale(1.2);
}

/* ===== System Requirements ===== */
.sys-section {
  padding: 80px 0 40px;
}

.sys-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.sys-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.sys-card:hover {
  border-color: rgba(27, 91, 255, 0.4);
  box-shadow: 0 8px 24px rgba(27, 91, 255, 0.08);
}

.sys-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.sys-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(27, 91, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.sys-head h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

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

.sys-specs li {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.spec-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.spec-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.sys-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--success);
  font-weight: 500;
}

.sys-status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  transform: none;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 40px 0 80px;
}

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

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: background 0.25s, border-color 0.25s;
}

.faq-item.active {
  background: rgba(27, 91, 255, 0.03);
  border-color: rgba(27, 91, 255, 0.2);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0 20px;
  height: 52px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s;
}

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

.faq-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all 0.3s;
}

.faq-icon::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.faq-icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.faq-item.active .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 20px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== Reviews ===== */
.reviews {
  background: #F0F4FB;
  padding: 80px 0;
}

.review-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 32px;
  margin-bottom: 32px;
  box-shadow: 0 2px 8px rgba(27, 91, 255, 0.05);
}

.review-score {
  display: flex;
  align-items: center;
  gap: 16px;
}

.review-score .big {
  font-family: var(--font-digit);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.review-score .stars {
  display: flex;
  gap: 2px;
  color: var(--accent);
  font-size: 1.0625rem;
}

.review-summary .muted {
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 2px 8px rgba(27, 91, 255, 0.05);
  transition: transform 0.25s, box-shadow 0.25s;
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(27, 91, 255, 0.12);
}

.review-card .stars {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 12px;
}

.review-card > p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.review-user .name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.review-user .loc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.review-more {
  text-align: center;
  margin-top: 32px;
}

.review-more a {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}

.review-more a:hover {
  gap: 10px;
}

/* ===== Download ===== */
.download-section {
  padding: 80px 0 40px;
}

.download-band {
  background: #0E2B5B;
  border-radius: 16px;
  padding: 60px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.download-band::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 184, 0, 0.08);
}

.download-band h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}

.download-band p.sub {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  font-size: 0.9375rem;
  position: relative;
}

.download-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
  position: relative;
}

.btn-win,
.btn-android {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  height: 60px;
  padding: 8px 32px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.9375rem;
  transition: all 0.25s;
}

.btn-win {
  background: var(--accent);
  color: #332600;
}

.btn-win:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 184, 0, 0.4);
}

.btn-android {
  background: #fff;
  color: var(--primary);
}

.btn-android:hover {
  background: #F0F4FF;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-win .ver,
.btn-android .ver {
  font-size: 0.75rem;
  font-weight: 400;
  margin-top: 2px;
  opacity: 0.85;
}

.download-note {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  position: relative;
}

/* ===== News / CMS ===== */
.news-section {
  padding: 80px 0 40px;
}

.news-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.news-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
}

.news-all {
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.news-all:hover {
  gap: 8px;
}

.news-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.news-feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

.news-feature:hover {
  box-shadow: 0 8px 24px rgba(27, 91, 255, 0.12);
  transform: translateY(-2px);
}

.news-feature img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.news-feature .news-body {
  padding: 24px;
}

.news-feature .badge {
  margin-bottom: 12px;
  display: inline-block;
}

.news-feature h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-feature p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  transition: color 0.2s;
}

.read-more:hover {
  color: var(--primary-dark);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: box-shadow 0.25s, transform 0.25s;
}

.news-item:hover {
  box-shadow: 0 8px 24px rgba(27, 91, 255, 0.12);
  transform: translateY(-2px);
}

.news-item .badge {
  display: inline-block;
  margin-bottom: 8px;
}

.news-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
}

.news-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item .news-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 56px 24px;
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.empty-state .empty-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 280px;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.footer-social a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(27, 91, 255, 0.06);
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

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

.footer-col a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-col .contact-line {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.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;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    max-width: 480px;
  }

  .stats-card {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .feature-wide {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .sys-specs {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-right .search-wrap,
  .nav-right .btn-download-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section {
    padding: 48px 0;
  }

  .hero {
    padding: 130px 0 80px;
    min-height: auto;
  }

  .hero .container {
    gap: 32px;
  }

  .hero-btns {
    flex-direction: column;
    align-items: stretch;
  }

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

  .stats-wrap {
    margin-top: -36px;
  }

  .stats-card {
    padding: 20px 16px;
    gap: 12px;
  }

  .stat-item .num {
    font-size: 1.5rem;
  }

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

  .carousel-viewport {
    margin: 0 -16px;
    padding: 8px 16px 24px;
  }

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

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

  .review-summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }

  .download-band {
    padding: 40px 24px;
  }

  .download-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn-win,
  .btn-android {
    width: 100%;
    max-width: 280px;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .hero-trust {
    gap: 12px;
  }

  .trust-item {
    font-size: 0.8125rem;
  }

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

  .stat-item .num {
    font-size: 1.375rem;
  }

  .stat-item .label {
    font-size: 0.75rem;
  }

  .carousel-card {
    flex-basis: 82vw;
  }

  .sys-specs {
    grid-template-columns: 1fr;
  }

  .sys-card {
    padding: 24px 20px;
  }

  .feature-card {
    padding: 24px 20px;
  }

  .feature-wide {
    padding: 24px 20px;
  }

  .news-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .news-feature .news-body {
    padding: 20px;
  }

  .news-item {
    padding: 16px;
  }

  .review-card {
    padding: 24px 20px;
  }

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

/* roulang page: category1 */
:root {
            --primary: #1B5BFF;
            --primary-dark: #1345CC;
            --primary-light: rgba(27, 91, 255, 0.08);
            --accent: #FFB800;
            --accent-dark: #E6A600;
            --success: #00A870;
            --bg: #F6F8FC;
            --white: #FFFFFF;
            --text: #1A2233;
            --text-secondary: #5A6478;
            --text-light: #8A94A8;
            --border: #E5E9F2;
            --shadow-color: rgba(27, 91, 255, 0.08);
            --shadow-hover-color: rgba(27, 91, 255, 0.14);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
            --nav-height: 72px;
            --container: 1200px;
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

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

        .section {
            padding: 80px 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .site-header.scrolled {
            background: var(--white);
            border-bottom-color: var(--border);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 14px;
            letter-spacing: 0.5px;
            border-radius: 8px;
            padding: 6px 10px;
            line-height: 1.2;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-text b {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .nav-menu a {
            position: relative;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            padding: 8px 2px;
            transition: color 0.2s;
        }

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

        .nav-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-menu a.active::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .search-toggle {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text-secondary);
            background: transparent;
            transition: background 0.2s, color 0.2s;
        }

        .search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .search-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .search-panel {
            position: absolute;
            top: calc(var(--nav-height) + 8px);
            right: 24px;
            width: 320px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            padding: 8px;
            display: none;
            z-index: 100;
        }

        .search-panel.open {
            display: block;
        }

        .search-panel input {
            width: 100%;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 0 14px;
            font-size: 14px;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
        }

        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 91, 255, 0.15);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            line-height: 1.2;
            white-space: nowrap;
        }

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

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

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(27, 91, 255, 0.3);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #332600;
        }

        .btn-accent:hover {
            background: #FFC933;
            color: #332600;
            box-shadow: 0 4px 16px rgba(255, 184, 0, 0.35);
        }

        .btn-accent:active {
            transform: translateY(1px);
        }

        .btn-outline {
            background: var(--white);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-nav {
            height: 38px;
            padding: 0 18px;
            font-size: 14px;
            background: var(--primary);
            color: #fff;
        }

        .btn-nav:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .btn-dark {
            background: #332600;
            color: #FFD966;
        }

        .btn-dark:hover {
            background: #4A3500;
            color: #FFD966;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text);
            transition: background 0.2s;
        }

        .hamburger:hover {
            background: var(--primary-light);
        }

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

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            position: relative;
            transition: background 0.3s;
        }

        .hamburger span::before,
        .hamburger span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 20px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: transform 0.3s;
        }

        .hamburger span::before {
            top: -6px;
        }

        .hamburger span::after {
            top: 6px;
        }

        .hamburger.open span {
            background: transparent;
        }

        .hamburger.open span::before {
            transform: rotate(45deg);
            top: 0;
        }

        .hamburger.open span::after {
            transform: rotate(-45deg);
            top: 0;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--white);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            transform: translateY(-100%);
            transition: transform 0.35s ease;
            padding: 80px 24px 40px;
        }

        .mobile-menu.open {
            transform: translateY(0);
        }

        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            padding: 12px 0;
            display: block;
            text-decoration: none;
        }

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

        .mobile-menu a.active {
            color: var(--primary);
        }

        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
            max-width: 280px;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            padding: calc(var(--nav-height) + 56px) 0 56px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 91, 255, 0.10), rgba(246, 248, 252, 0.92) 65%);
        }

        .cat-hero-inner {
            position: relative;
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 48px;
            align-items: center;
            min-height: 260px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(27, 91, 255, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 10px;
            padding: 6px 16px;
            margin-bottom: 20px;
        }

        .cat-hero-left h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 12px;
        }

        .cat-hero-left h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .cat-hero-right p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== Feature Module ===== */
        .feat-module {
            background: var(--white);
        }

        .feat-module.alt-bg {
            background: var(--bg);
        }

        .module-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .module-grid--reverse .module-media {
            order: 0;
        }

        .module-grid--reverse .module-content {
            order: 1;
        }

        .module-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 700;
            border-radius: 10px;
            margin-bottom: 20px;
        }

        .module-content h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            color: var(--text);
            margin-bottom: 16px;
        }

        .module-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }

        .module-content p:last-of-type {
            margin-bottom: 20px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 8px;
        }

        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 10px;
            padding: 6px 14px;
        }

        .feature-list {
            margin-top: 8px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 15px;
            color: var(--text-secondary);
            padding: 6px 0;
        }

        .feature-list li::before {
            content: "✓";
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
        }

        .module-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(27, 91, 255, 0.08);
        }

        .module-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 260px;
        }

        /* ===== Metrics ===== */
        .metrics-section {
            background: var(--bg);
            padding: 48px 0;
        }

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

        .metric-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: 0 2px 8px var(--shadow-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px var(--shadow-hover-color);
        }

        .metric-num {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

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

        /* ===== CTA Bar ===== */
        .cta-bar {
            background: var(--primary);
            padding: 36px 0;
        }

        .cta-bar--amber {
            background: var(--accent);
        }

        .cta-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-bar-inner p {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0;
            flex: 1;
            min-width: 260px;
        }

        .cta-bar--amber .cta-bar-inner p {
            color: #332600;
        }

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

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

        .section-head h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            color: var(--text);
            margin-bottom: 8px;
        }

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

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .faq-item:hover {
            border-color: rgba(27, 91, 255, 0.4);
            box-shadow: 0 2px 12px rgba(27, 91, 255, 0.05);
        }

        .faq-item.open {
            background: #F5F8FF;
            border-color: rgba(27, 91, 255, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: transparent;
            transition: color 0.2s;
            line-height: 1.5;
            min-height: 48px;
        }

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

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 10px;
        }

        .faq-icon {
            position: relative;
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
            transition: transform 0.3s ease;
        }

        .faq-icon::before {
            width: 2px;
            height: 14px;
            top: 3px;
            left: 9px;
        }

        .faq-icon::after {
            width: 14px;
            height: 2px;
            top: 9px;
            left: 3px;
        }

        .faq-item.open .faq-icon::before {
            transform: rotate(90deg);
        }

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

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

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid rgba(27, 91, 255, 0.1);
            padding-top: 14px;
        }

        /* ===== Final CTA ===== */
        .cta-box-section {
            background: var(--bg);
            padding: 64px 0;
        }

        .cta-box {
            background: #0E2B5B;
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 184, 0, 0.12);
        }

        .cta-box h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
        }

        .cta-box .btn {
            position: relative;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 360px;
            margin-bottom: 20px;
        }

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

        .footer-social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--white);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all 0.2s;
        }

        .footer-social a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(27, 91, 255, 0.3);
            transform: translateY(-2px);
        }

        .footer-social a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.2s;
        }

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

        .contact-line {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border);
            padding-top: 28px;
            font-size: 13px;
            color: var(--text-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .module-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .module-grid--reverse .module-media {
                order: 1;
            }

            .module-grid--reverse .module-content {
                order: 0;
            }

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

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .cat-hero-inner {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-top: 16px;
            }

            .cat-hero {
                padding: calc(var(--nav-height) + 40px) 0 40px;
            }

            .nav-menu,
            .search-toggle {
                display: none;
            }

            .hamburger {
                display: flex;
            }

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

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

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

            .cta-bar-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-bar-inner .btn {
                width: 100%;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 18px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .cat-hero-left h1 {
                font-size: 1.6rem;
            }

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

            .metric-card {
                padding: 20px 12px;
            }

            .metric-num {
                font-size: 28px;
            }

            .module-media img {
                min-height: 180px;
            }

            .btn {
                height: 42px;
                padding: 0 18px;
                font-size: 14px;
            }

            .cta-box {
                padding: 32px 20px;
                border-radius: 10px;
            }

            .cta-box h2 {
                font-size: 1.35rem;
            }

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

/* roulang page: article */
:root {
  --primary: #1B5BFF;
  --primary-dark: #1345CC;
  --primary-light: rgba(27, 91, 255, 0.08);
  --accent: #FFB800;
  --accent-dark: #E6A600;
  --success: #00A870;
  --bg: #F6F8FC;
  --white: #FFFFFF;
  --text: #1A2233;
  --text-secondary: #5A6478;
  --text-muted: #8A94A8;
  --border: #E5E9F2;
  --shadow: 0 2px 8px rgba(27, 91, 255, 0.05);
  --shadow-hover: 0 8px 24px rgba(27, 91, 255, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --num-font: "DIN Alternate", "Roboto", sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 0.9375rem;
  -webkit-font-smoothing: antialiased;
  padding-top: 72px;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(27, 91, 255, 0.3);
  outline-offset: 2px;
  border-radius: 4px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 24px; border-radius: 8px;
  font-size: 0.9375rem; font-weight: 600; border: none; cursor: pointer;
  text-decoration: none; transition: all 0.2s ease; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 16px rgba(27, 91, 255, 0.3); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #332600; }
.btn-accent:hover { background: #FFC933; box-shadow: 0 4px 16px rgba(255, 184, 0, 0.3); transform: translateY(-1px); }
.btn-outline { background: var(--white); color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 0.875rem; }
.badge {
  display: inline-block; padding: 4px 12px; background: var(--primary-light);
  color: var(--primary); border-radius: 10px; font-size: 0.75rem; font-weight: 600;
  line-height: 1.5;
}

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 72px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(27, 91, 255, 0.04);
  transition: all 0.35s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), #4A8BFF);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 13px; letter-spacing: 0.5px;
  font-family: var(--num-font);
}
.logo-text { font-size: 1.15rem; color: var(--text); font-weight: 500; line-height: 1.2; }
.logo-text b { color: var(--primary); font-weight: 700; }
.nav-menu { display: flex; gap: 28px; list-style: none; }
.nav-menu a {
  text-decoration: none; color: var(--text-secondary);
  font-size: 0.9375rem; font-weight: 500;
  padding: 8px 0; position: relative; transition: color 0.2s ease;
}
.nav-menu a:hover { color: var(--primary); }
.nav-menu a.active { color: var(--primary); font-weight: 600; }
.nav-menu a.active::after {
  content: ""; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px; background: var(--primary); border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: transparent; border: none;
  cursor: pointer; padding: 8px; border-radius: var(--radius-sm);
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Breadcrumb */
.breadcrumb-wrap { background: #fff; border-bottom: 1px solid var(--border); padding: 14px 0; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.875rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }
.crumb-sep { color: var(--border); }
.crumb-current { color: var(--text-secondary); max-width: 400px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Article Main */
.article-main { padding: 40px 0 48px; }
.article-layout { max-width: 860px; margin: 0 auto; }
.article-card {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--border); box-shadow: var(--shadow);
  padding: 48px;
}
.article-header { text-align: center; margin-bottom: 28px; }
.article-header .badge { margin-bottom: 12px; }
.article-header h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.4; font-weight: 700; color: var(--text);
  margin: 12px 0 16px; word-break: break-word;
}
.article-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; color: var(--text-muted); font-size: 0.875rem; }
.article-banner {
  position: relative; border-radius: var(--radius); overflow: hidden;
  height: 130px; margin: 0 0 36px; background: var(--primary);
}
.article-banner img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0.35;
}
.banner-info {
  position: relative; z-index: 2; height: 100%;
  display: flex; align-items: center; gap: 16px;
  padding: 16px 24px; color: #fff;
  background: linear-gradient(90deg, rgba(27, 91, 255, 0.88), rgba(27, 91, 255, 0.2));
}
.banner-label { font-size: 1.2rem; font-weight: 700; white-space: nowrap; }
.banner-text { font-size: 0.875rem; opacity: 0.92; flex: 1; }
.banner-info .btn-accent { margin-left: auto; flex-shrink: 0; }

/* Article Body */
.article-body { max-width: 760px; margin: 0 auto; }
.article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 2em 0 0.8em; color: var(--text); line-height: 1.4; }
.article-body h3 { font-size: 1.2rem; font-weight: 600; margin: 1.8em 0 0.6em; color: var(--text); }
.article-body p { margin: 1.5em 0; line-height: 1.8; color: #2A3040; }
.article-body ul, .article-body ol { margin: 1.5em 0; padding-left: 1.5em; color: #2A3040; }
.article-body ul li, .article-body ol li { margin: 0.4em 0; }
.article-body img { max-width: 100%; height: auto; border-radius: var(--radius-sm); margin: 1.5em auto; }
.article-body blockquote {
  margin: 1.5em 0; padding: 16px 24px;
  border-left: 4px solid var(--primary);
  background: rgba(27, 91, 255, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary); font-style: normal;
}
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { background: var(--primary-light); }

/* Prev Next */
.article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.article-prev, .article-next {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--white); text-decoration: none; color: var(--text);
  flex: 1; max-width: 48%; transition: all 0.25s ease;
}
.article-prev:hover, .article-next:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-hover); }
.article-next { justify-content: flex-end; }
.nav-arrow { font-size: 1.25rem; font-weight: 700; line-height: 1; }
.nav-text { font-size: 0.875rem; font-weight: 500; }

/* Not Found */
.not-found { text-align: center; padding: 80px 24px; }
.not-found-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem; font-weight: 700; margin: 0 auto 20px;
}
.not-found h2 { font-size: 1.5rem; margin-bottom: 8px; }
.not-found p { color: var(--text-muted); margin-bottom: 24px; }

/* Related */
.related-section { padding: 32px 0 80px; }
.related-section .container > h2 { text-align: center; font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 700; margin-bottom: 8px; }
.related-sub { text-align: center; color: var(--text-muted); margin-bottom: 40px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.related-card {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--border); overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex; flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card .thumb { display: block; overflow: hidden; }
.related-card img { width: 100%; height: 180px; object-fit: cover; transition: transform 0.35s ease; }
.related-card:hover img { transform: scale(1.03); }
.related-card .card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.related-card .badge { align-self: flex-start; margin-bottom: 12px; }
.related-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
.related-card h3 a { color: var(--text); text-decoration: none; transition: color 0.2s; }
.related-card h3 a:hover { color: var(--primary); }
.related-card .card-excerpt { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; flex: 1; margin-bottom: 12px; }
.related-card .card-meta { display: flex; justify-content: space-between; align-items: center; color: var(--text-muted); font-size: 0.75rem; }
.related-card .card-link { color: var(--primary); text-decoration: none; font-weight: 600; font-size: 0.875rem; }
.related-card .card-link:hover { text-decoration: underline; }
.back-to-list { text-align: center; margin-top: 40px; }
.back-to-list a { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); text-decoration: none; font-weight: 500; font-size: 0.9375rem; }
.back-to-list a:hover { text-decoration: underline; }
.back-arrow { font-weight: 700; }

/* Footer */
.site-footer { background: var(--bg); border-top: 1px solid var(--border); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 0.875rem; line-height: 1.7; max-width: 340px; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 10px; background: var(--white); border: 1px solid var(--border);
  color: var(--text-muted); transition: all 0.2s ease;
}
.footer-social a:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }
.footer-col h4 { font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-secondary); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--primary); }
.contact-line { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--text-muted); font-size: 0.8125rem; flex-wrap: wrap; gap: 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--white); flex-direction: column; gap: 12px;
    padding: 32px 24px; transform: translateX(100%);
    transition: transform 0.3s ease; z-index: 999; overflow-y: auto;
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-menu a { font-size: 1.0625rem; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-menu a.active::after { display: none; }
  .header-actions .btn-sm { display: none; }
  .article-card { padding: 28px 20px; }
  .article-banner { height: auto; min-height: 110px; }
  .banner-info { flex-wrap: wrap; gap: 10px; padding: 14px 16px; }
  .banner-label { font-size: 1.05rem; }
  .banner-text { font-size: 0.8125rem; flex-basis: 100%; }
  .banner-info .btn-accent { margin-left: 0; }
  .article-nav { flex-direction: column; }
  .article-prev, .article-next { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  body { padding-top: 64px; }
  .site-header, .header-inner, .nav-menu { top: 64px; }
  .site-header, .header-inner { height: 64px; }
  .article-main { padding: 24px 0 40px; }
  .article-card { padding: 24px 16px; border-radius: 10px; }
  .article-header h1 { font-size: 1.6rem; }
  .article-meta { gap: 8px; font-size: 0.8125rem; }
  .article-body { font-size: 0.9375rem; }
  .article-body h2 { font-size: 1.3rem; }
  .related-section { padding: 24px 0 64px; }
  .related-card img { height: 160px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
            --primary: #1B5BFF;
            --primary-dark: #1345CC;
            --primary-light: rgba(27, 91, 255, 0.08);
            --accent: #FFB800;
            --accent-dark: #E6A600;
            --success: #00A870;
            --bg: #F6F8FC;
            --white: #FFFFFF;
            --text: #1A2233;
            --text-secondary: #5A6478;
            --text-weak: #8A94A8;
            --border: #E5E9F2;
            --shadow: rgba(27, 91, 255, 0.08);
            --radius: 12px;
            --radius-sm: 8px;
            --transition: 0.25s ease;
            --container: 1200px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== HEADER ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: var(--white);
            border-bottom-color: var(--border);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.875rem;
            padding: 6px 12px;
            border-radius: 8px;
            letter-spacing: 0.5px;
        }
        .logo-text {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.2;
        }
        .logo-text b {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            display: block;
            padding: 8px 16px;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            position: relative;
            transition: color 0.2s ease, background 0.2s ease;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: rgba(27, 91, 255, 0.04);
        }
        .nav-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0 24px;
            height: 44px;
            cursor: pointer;
            transition: all var(--transition);
            border: 1.5px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(27, 91, 255, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: var(--white);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(27, 91, 255, 0.06);
            color: var(--primary-dark);
        }
        .btn-accent {
            background: var(--accent);
            color: #332600;
            font-weight: 700;
        }
        .btn-accent:hover {
            background: #FFC940;
            color: #332600;
            box-shadow: 0 4px 16px rgba(255, 184, 0, 0.35);
        }
        .header-cta {
            font-size: 0.875rem;
            height: 40px;
            padding: 0 20px;
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text);
            border-radius: 8px;
            transition: background 0.2s;
        }
        .menu-toggle:hover {
            background: rgba(27, 91, 255, 0.06);
        }
        /* ===== MOBILE NAV ===== */
        .mobile-nav {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            padding: 16px 24px 24px;
            z-index: 999;
            display: none;
            transform: translateY(-8px);
            opacity: 0;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav.show {
            display: block;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 8px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        /* ===== HERO NARROW ===== */
        .page-hero {
            background: linear-gradient(135deg, rgba(27, 91, 255, 0.12), rgba(246, 248, 252, 0.92) 65%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 160px 0 80px;
            position: relative;
        }
        .page-hero-inner {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 48px;
        }
        .page-hero h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.75rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            letter-spacing: 0.5px;
        }
        .page-hero h1 span {
            color: var(--primary);
        }
        .page-hero-desc {
            max-width: 420px;
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* ===== SECTION BLOCK ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block.bg-white {
            background: var(--white);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
        }
        .section-header .badge-line {
            margin-bottom: 16px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(27, 91, 255, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 10px;
            letter-spacing: 0.5px;
        }
        /* ===== FEATURE ROWS ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }
        .feature-row:last-child {
            margin-bottom: 0;
        }
        .feature-row .img-wrap {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(27, 91, 255, 0.1);
            border: 1px solid var(--border);
            background: var(--white);
        }
        .feature-row .img-wrap img {
            width: 100%;
            height: auto;
            min-height: 280px;
            object-fit: cover;
        }
        .feature-text h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .feature-text p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .feature-list {
            margin-top: 20px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 0.9375rem;
        }
        .feature-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 0.875rem;
            flex-shrink: 0;
        }
        /* ===== METRICS STRIP ===== */
        .metrics-strip {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: 0 12px 32px rgba(27, 91, 255, 0.08);
            padding: 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin: -40px auto 0;
            position: relative;
            z-index: 2;
            max-width: var(--container);
        }
        .metric-item {
            text-align: center;
            padding: 8px;
        }
        .metric-item .num {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }
        .metric-item .num i {
            color: var(--primary);
            font-style: normal;
        }
        .metric-item .label {
            color: var(--text-weak);
            font-size: 0.875rem;
            margin-top: 4px;
        }
        /* ===== CONVERSION BAR ===== */
        .convert-bar {
            background: linear-gradient(120deg, var(--primary), var(--primary-dark));
            border-radius: 16px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            margin: 64px 0;
            color: #fff;
        }
        .convert-bar h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .convert-bar p {
            opacity: 0.9;
            font-size: 0.9375rem;
        }
        .convert-bar .btn-accent {
            flex-shrink: 0;
            font-size: 0.9375rem;
            height: 44px;
            padding: 0 28px;
        }
        /* ===== SCENARIO GRID ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            box-shadow: 0 8px 24px rgba(27, 91, 255, 0.12);
            transform: translateY(-4px);
        }
        .scenario-card .icon-block {
            width: 52px;
            height: 52px;
            border-radius: 10px;
            background: rgba(27, 91, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.25rem;
        }
        .scenario-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .scenario-card p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.7;
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(27, 91, 255, 0.3);
        }
        .faq-item.open {
            border-color: rgba(27, 91, 255, 0.3);
            box-shadow: 0 4px 16px rgba(27, 91, 255, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: 52px;
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            user-select: none;
        }
        .faq-question .icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            color: var(--text-weak);
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }
        /* ===== CTA BANNER ===== */
        .cta-banner {
            background: #0E2B5B;
            border-radius: 16px;
            padding: 64px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 184, 0, 0.15), transparent 70%);
            border-radius: 50%;
        }
        .cta-banner h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-banner p {
            opacity: 0.85;
            font-size: 0.9375rem;
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.7;
            margin: 16px 0 20px;
            max-width: 380px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all 0.2s ease;
        }
        .footer-social a:hover {
            color: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(27, 91, 255, 0.1);
        }
        .footer-col h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text);
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul a {
            color: var(--text-secondary);
            font-size: 0.875rem;
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: var(--primary);
        }
        .contact-line {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8125rem;
            color: var(--text-weak);
        }
        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .feature-row {
                gap: 40px;
            }
            .convert-bar {
                padding: 40px 32px;
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
                height: 64px;
            }
            .nav-menu {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .page-hero {
                padding: 120px 0 48px;
            }
            .page-hero-inner {
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
            .page-hero-desc {
                max-width: 100%;
            }
            .metrics-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 24px;
                gap: 16px;
                margin-top: -24px;
            }
            .metric-item .num {
                font-size: 1.5rem;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 48px;
            }
            .feature-row .img-wrap img {
                min-height: 200px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .convert-bar {
                margin: 32px 0;
                padding: 32px 24px;
            }
            .cta-banner {
                padding: 40px 24px;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-btn-group .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 480px) {
            .section-block {
                padding: 40px 0;
            }
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .metrics-strip {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .convert-bar {
                align-items: flex-start;
                text-align: left;
            }
            .convert-bar .btn-accent {
                width: 100%;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }