/* roulang page: index */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #101A33;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.10);
  --accent-primary: #00D68F;
  --accent-secondary: #00BFFF;
  --text-primary: #EAF2FF;
  --text-secondary: #93A4C3;
  --text-muted: #5B6B8A;
  --divider: rgba(255,255,255,0.08);
  --warning: #FFB020;
  --radius-card: 12px;
  --radius-tag: 6px;
  --radius-btn: 12px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-btn: 0 0 24px rgba(0,214,143,0.45);
  --font-main: "PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --nav-height: 64px;
  --nav-height-scrolled: 56px;
  --section-space: 80px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  overflow-x: hidden;
  margin: 0;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
}

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

button,
input {
  font-family: inherit;
  outline: none;
}

.container {
  max-width: 1200px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

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

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 2.5vw + 0.8rem, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
  padding-left: 18px;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  border-radius: 2px;
  background: var(--accent-primary);
}

.section-head p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(11,18,32,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
  transition: background .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
  background: rgba(11,18,32,0.95);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0 10px;
  transition: padding .3s ease;
}

.site-header.scrolled .header-top {
  padding: 8px 0 6px;
}

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

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  position: relative;
  display: inline-block;
  box-shadow: 0 0 14px rgba(0,214,143,0.25);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2px solid #0B1220;
  border-radius: 6px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-name em {
  font-style: normal;
  color: var(--accent-primary);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: flex-end;
  min-width: 0;
}

.header-search {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 2px 4px;
  width: 260px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.header-search:focus-within {
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(0,214,143,0.15);
}

.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 0.875rem;
  min-width: 0;
}

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

.header-search button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 10px;
  font-size: 0.875rem;
  cursor: pointer;
}

.header-search button:hover {
  color: var(--accent-primary);
}

.hot-words {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  white-space: nowrap;
}

.hot-label {
  color: var(--text-muted);
}

.hot-words a {
  color: var(--text-secondary);
  padding: 2px 7px;
  border-radius: 20px;
  background: rgba(255,255,255,0.04);
}

.hot-words a:hover {
  color: var(--accent-primary);
  background: rgba(0,214,143,0.08);
}

.channel-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 8px 0 12px;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.channel-nav a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 4px 0;
  position: relative;
  white-space: nowrap;
}

.channel-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -12px;
  width: 100%;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity .25s ease, transform .25s ease;
}

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

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

.channel-nav a.active {
  color: var(--accent-primary);
}

/* ========== Hero ========== */
.hero-section {
  position: relative;
  min-height: 80vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(115deg, rgba(11,18,32,0.92) 0%, rgba(11,18,32,0.72) 55%, rgba(11,18,32,0.3) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
  padding: 60px 0 90px;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(0,214,143,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: 20%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0,191,255,0.10) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1 1 52%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,214,143,0.10);
  border: 1px solid rgba(0,214,143,0.25);
  color: var(--accent-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 24px;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

.hero-title {
  font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin: 0 0 18px;
}

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

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0 0 28px;
  max-width: 480px;
}

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

.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  color: #06121F;
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}

.btn-main:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn);
  color: #06121F;
}

.btn-main:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.btn-ghost:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(0,214,143,0.05);
}

.hero-visual {
  flex: 1 1 42%;
  max-width: 480px;
}

.hero-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 14px;
  box-shadow: var(--shadow-card);
  position: relative;
}

.hero-glass img {
  width: 100%;
  border-radius: 10px;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.hero-glass-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 8px 4px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.hero-glass-caption .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 8px rgba(0,214,143,0.6);
  display: inline-block;
  margin-right: 6px;
}

/* ========== 价值特征区 ========== */
.feature-section {
  background: var(--bg-secondary);
  overflow: hidden;
}

.feature-section::before {
  content: "";
  position: absolute;
  top: 40px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0,191,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  position: relative;
}

.feature-item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 30px 28px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  position: relative;
  overflow: hidden;
}

.feature-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0,214,143,0.4);
  box-shadow: 0 12px 32px rgba(0,0,0,0.25);
}

.feature-item:nth-child(2) {
  transform: translateY(28px);
}

.feature-item:nth-child(2):hover {
  transform: translateY(24px);
}

.feature-item:nth-child(4) {
  transform: translateY(28px);
}

.feature-item:nth-child(4):hover {
  transform: translateY(24px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,214,143,0.15), rgba(0,191,255,0.15));
  border: 1px solid rgba(0,214,143,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.25rem;
  margin-bottom: 18px;
}

.feature-item h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0;
  line-height: 1.7;
}

/* ========== 轮播 ========== */
.carousel-section {
  background: var(--bg-primary);
  overflow: hidden;
}

.custom-carousel {
  position: relative;
  padding: 0 56px;
}

.custom-carousel .carousel-inner {
  border-radius: 16px;
  overflow: hidden;
}

.custom-carousel .carousel-item {
  transition: transform .6s ease-in-out;
}

.carousel-slide-content {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--divider);
  border-radius: 16px;
}

.carousel-main-img {
  flex: 0 0 58%;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

.carousel-main-img img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform .5s ease;
}

.carousel-main-img:hover img {
  transform: scale(1.02);
}

.carousel-main-img .img-caption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  background: rgba(11,18,32,0.75);
  backdrop-filter: blur(6px);
  color: var(--text-primary);
  font-size: 0.875rem;
  padding: 5px 14px;
  border-radius: 20px;
  border-left: 3px solid var(--accent-primary);
}

.carousel-sub-imgs {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.carousel-sub-card {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--divider);
}

.carousel-sub-card img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16/7;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.carousel-sub-card .sub-caption {
  position: absolute;
  left: 10px;
  bottom: 8px;
  font-size: 0.8125rem;
  color: var(--text-primary);
  background: rgba(11,18,32,0.7);
  padding: 3px 10px;
  border-radius: 14px;
}

.custom-carousel .carousel-control-prev,
.custom-carousel .carousel-control-next {
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 1;
  color: var(--text-primary);
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.custom-carousel .carousel-control-prev {
  left: 0;
}

.custom-carousel .carousel-control-next {
  right: 0;
}

.custom-carousel .carousel-control-prev:hover,
.custom-carousel .carousel-control-next:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-50%) scale(1.05);
}

.custom-carousel .carousel-control-prev i,
.custom-carousel .carousel-control-next i {
  font-size: 1rem;
}

.custom-carousel .carousel-indicators {
  bottom: -36px;
  margin: 0;
}

.custom-carousel .carousel-indicators [data-bs-target] {
  width: 18px;
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.35);
  border: none;
  opacity: 1;
  margin: 0 4px;
  transition: background .3s ease, width .3s ease;
}

.custom-carousel .carousel-indicators .active {
  background: var(--accent-primary);
  width: 30px;
}

/* ========== 最新信息 ========== */
.news-section {
  background: var(--bg-secondary);
}

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

.news-card {
  display: block;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  height: 100%;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,214,143,0.35);
  box-shadow: 0 12px 32px rgba(0,0,0,0.25);
}

.news-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

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

.news-card:hover .news-cover img {
  transform: scale(1.02);
}

.news-cover .cover-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,214,143,0.9);
  color: #06121F;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 14px;
}

.news-body {
  padding: 18px 18px 16px;
}

.news-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 8px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3em;
  transition: color .2s ease;
}

.news-card:hover .news-title {
  color: var(--accent-primary);
}

.news-excerpt {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--divider);
  padding-top: 12px;
  margin-top: 4px;
}

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

.news-meta .category {
  color: var(--accent-secondary);
  font-size: 0.8125rem;
  background: rgba(0,191,255,0.08);
  padding: 2px 10px;
  border-radius: 14px;
}

.news-more {
  color: var(--text-secondary);
  font-size: 0.8125rem;
}

.news-card:hover .news-more {
  color: var(--accent-primary);
}

.news-empty {
  border: 1px dashed rgba(255,255,255,0.2);
  border-radius: var(--radius-card);
  padding: 60px 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  grid-column: 1 / -1;
}

/* ========== 系统要求 ========== */
.spec-section {
  background: var(--bg-primary);
}

.spec-card {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 40px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}

.spec-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px;
}

.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.spec-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.spec-row:nth-child(odd) {
  border-right: 1px solid rgba(255,255,255,0.06);
  padding-right: 24px;
  margin-right: 12px;
}

.spec-row:nth-child(even) {
  padding-left: 24px;
  margin-left: 12px;
}

.spec-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9375rem;
  white-space: nowrap;
}

.spec-label i {
  color: var(--accent-primary);
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

.spec-value {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: right;
  margin-left: 15px;
}

.spec-badge {
  display: inline-block;
  background: rgba(0,214,143,0.12);
  color: var(--accent-primary);
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 12px;
  margin-left: 8px;
  white-space: nowrap;
}

.spec-badge.warn {
  background: rgba(255,176,32,0.12);
  color: var(--warning);
}

/* ========== 评价墙 ========== */
.review-section {
  background: var(--bg-secondary);
  overflow: hidden;
}

.review-wall {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.review-col-right {
  transform: translateY(30px);
}

.review-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
  transition: transform .25s ease, border-color .25s ease;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,214,143,0.3);
}

.review-stars {
  color: var(--warning);
  font-size: 0.875rem;
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.review-text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin: 0 0 16px;
}

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

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,214,143,0.3), rgba(0,191,255,0.3));
  border: 1px solid rgba(0,214,143,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-primary);
}

.review-author-name {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9375rem;
}

.review-author-source {
  color: var(--text-muted);
  font-size: 0.8125rem;
}

/* ========== 下载按钮组 ========== */
.download-section {
  background: linear-gradient(rgba(11,18,32,0.9), rgba(11,18,32,0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  text-align: center;
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}

.download-section::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0,214,143,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.download-title {
  font-size: clamp(1.75rem, 3vw + 0.8rem, 2.375rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 12px;
}

.download-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0 0 36px;
}

.download-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.btn-download-large {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  color: #06121F;
  font-size: 1.125rem;
  font-weight: 700;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}

.btn-download-large:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn);
  color: #06121F;
}

.btn-scan {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  padding: 14px 24px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}

.btn-scan:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.qr-placeholder {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: linear-gradient(90deg, #373737 40%, transparent 40%),
              linear-gradient(0deg, #373737 40%, transparent 40%);
  background-size: 10px 10px;
  display: inline-block;
}

.download-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

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

.download-meta i {
  color: var(--accent-primary);
}

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

.faq-wrapper {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.faq-item.active {
  border-left: 3px solid var(--accent-primary);
  border-color: rgba(0,214,143,0.35);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 22px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: color .2s ease;
  margin: 0;
}

.faq-item.active .faq-question {
  color: var(--accent-primary);
}

.faq-question i {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: transform .25s ease;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #070C16;
  border-top: 1px solid var(--divider);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

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

.footer-brand .brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-brand .brand-name {
  font-size: 1.0625rem;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 18px;
}

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

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

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color .2s ease;
}

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

.footer-col p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0;
}

.footer-bottom {
  border-top: 1px solid var(--divider);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin: 0;
}

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

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  :root {
    --section-space: 60px;
    --nav-height: 56px;
  }

  .header-tools {
    gap: 10px;
  }

  .header-search {
    width: 200px;
  }

  .hot-words a:last-child {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding: 50px 0 70px;
  }

  .hero-content {
    flex-direction: column;
    gap: 32px;
  }

  .hero-text {
    flex: 1 1 auto;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .carousel-slide-content {
    flex-direction: column;
  }

  .carousel-main-img {
    flex: 1;
  }

  .carousel-sub-imgs {
    flex-direction: row;
  }

  .carousel-sub-card img {
    aspect-ratio: 16/9;
  }

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

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

  .spec-row:nth-child(odd) {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
  }

  .spec-row:nth-child(even) {
    padding-left: 8px;
    margin-left: 0;
  }

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

@media (max-width: 768px) {
  :root {
    --section-space: 40px;
  }

  .header-top {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .brand {
    justify-content: center;
  }

  .header-tools {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .header-search {
    width: 100%;
  }

  .hot-words {
    justify-content: center;
  }

  .channel-nav {
    overflow-x: auto;
    gap: 20px;
    padding: 6px 0 10px;
    scrollbar-width: none;
  }

  .channel-nav::-webkit-scrollbar {
    display: none;
  }

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

  .feature-item:nth-child(2),
  .feature-item:nth-child(4) {
    transform: none;
  }

  .feature-item:nth-child(2):hover,
  .feature-item:nth-child(4):hover {
    transform: none;
  }

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

  .review-col-right {
    transform: none;
  }

  .custom-carousel {
    padding: 0 40px;
  }

  .carousel-sub-imgs {
    flex-direction: column;
  }

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

  .section-head h2 {
    font-size: 1.375rem;
    padding-left: 14px;
  }

  .section-head h2::before {
    height: 20px;
  }

  .spec-card {
    padding: 24px 18px;
  }

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

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

@media (max-width: 576px) {
  .hero-actions .btn-main,
  .hero-actions .btn-ghost {
    width: 100%;
  }

  .download-actions .btn-download-large,
  .download-actions .btn-scan {
    width: 100%;
    justify-content: center;
  }

  .qr-placeholder {
    display: none;
  }

  .download-meta {
    gap: 10px;
    flex-direction: column;
  }

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

  .custom-carousel .carousel-control-prev,
  .custom-carousel .carousel-control-next {
    width: 34px;
    height: 34px;
  }

  .custom-carousel {
    padding: 0 30px;
  }
}

/* 焦点可见性 */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* roulang page: article */
:root {
  --bg-main: #0B1220;
  --bg-alt: #101A33;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.10);
  --accent: #00D68F;
  --accent2: #00BFFF;
  --text-main: #EAF2FF;
  --text-sub: #93A4C3;
  --text-dim: #5B6B8A;
  --divider: rgba(255, 255, 255, 0.08);
  --warning: #FFB020;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --gradient: linear-gradient(135deg, #00D68F 0%, #00BFFF 100%);
  --header-h: 64px;
  --header-h-sm: 56px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(600px 400px at 85% -5%, rgba(0, 214, 143, 0.10), transparent 70%),
    radial-gradient(500px 400px at -5% 35%, rgba(0, 191, 255, 0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent2); }
img { max-width: 100%; height: auto; display: block; border: 0; }
button, input { font-family: inherit; }
ul, ol { list-style-position: inside; }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(11, 18, 32, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0 8px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  flex-shrink: 0;
}
.brand:hover { color: #fff; }
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--gradient);
  position: relative;
  display: inline-block;
  box-shadow: 0 0 16px rgba(0, 214, 143, 0.35);
}
.brand-mark::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 10px;
  width: 14px;
  height: 18px;
  border-radius: 6px 6px 2px 2px;
  background: rgba(11, 18, 32, 0.55);
  clip-path: polygon(50% 0, 100% 30%, 82% 100%, 50% 78%, 18% 100%, 0 30%);
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.brand-name em {
  font-style: normal;
  color: var(--accent);
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 8px;
  height: 36px;
  padding: 0 6px 0 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 260px;
}
.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.12);
}
.header-search input {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--text-main);
  font-size: 0.875rem;
  outline: none;
  height: 100%;
}
.header-search input::placeholder { color: var(--text-dim); }
.header-search button {
  background: transparent;
  border: 0;
  color: var(--text-sub);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}
.header-search button:hover { color: var(--accent); background: rgba(255, 255, 255, 0.06); }
.hot-words {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
}
.hot-label {
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.75rem;
}
.hot-words a { color: var(--text-sub); }
.hot-words a:hover { color: var(--accent); }
.channel-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 6px;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-nav a {
  color: var(--text-sub);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition), background var(--transition);
}
.channel-nav a:hover {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
}
.channel-nav a.active {
  color: var(--accent);
  font-weight: 600;
}
.channel-nav a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  padding: 24px 0 12px;
}
.breadcrumb-wrap .breadcrumb {
  margin: 0;
  background: transparent;
  padding: 0;
}
.breadcrumb-wrap .breadcrumb-item {
  font-size: 0.875rem;
  color: var(--text-dim);
}
.breadcrumb-wrap .breadcrumb-item a { color: var(--text-sub); }
.breadcrumb-wrap .breadcrumb-item a:hover { color: var(--accent); }
.breadcrumb-wrap .breadcrumb-item.active { color: var(--text-sub); }
.breadcrumb-item + .breadcrumb-item::before { color: var(--text-dim); }

/* ===== Article Layout ===== */
.article-page {
  position: relative;
  z-index: 1;
  padding-bottom: 40px;
}
.article-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.article-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 48px 56px;
  box-shadow: var(--shadow);
}
.article-title {
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2rem);
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--divider);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-sub);
  font-size: 0.8125rem;
}
.meta-item i { color: var(--accent); font-size: 0.75rem; }
.meta-item .meta-cat {
  color: var(--accent);
  background: rgba(0, 214, 143, 0.10);
  border: 1px solid rgba(0, 214, 143, 0.25);
  border-radius: 4px;
  padding: 1px 8px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* ===== Article Content ===== */
.article-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-main);
  max-width: 720px;
  margin: 0 auto;
}
.article-content > * + * { margin-top: 1em; }
.article-content p {
  margin-bottom: 1.2em;
  text-align: justify;
}
.article-content p:first-of-type::first-letter {
  font-size: 1.3em;
  color: var(--accent);
  font-weight: 600;
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 2em 0 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent2);
  margin: 1.6em 0 0.6em;
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(0, 214, 143, 0.06);
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  color: var(--text-sub);
  font-style: normal;
  margin: 1.4em 0;
}
.article-content blockquote p { margin: 0; }
.article-content ul,
.article-content ol {
  padding-left: 20px;
  margin-bottom: 1.2em;
}
.article-content ul li,
.article-content ol li {
  margin-bottom: 0.5em;
}
.article-content ul li::marker { color: var(--accent); }
.article-content ol li::marker { color: var(--accent); font-weight: 600; }
.article-content img {
  border-radius: 12px;
  margin: 1.6em auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}
.article-content pre {
  background: #0A1020;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 18px;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #B7E4C7;
  margin: 1.4em 0;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: rgba(0, 214, 143, 0.08);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.88em;
  color: var(--accent);
}
.article-content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.6em 0;
  font-size: 0.9375rem;
}
.article-content th {
  background: rgba(0, 214, 143, 0.10);
  color: #fff;
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}
.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-sub);
}
.article-content tr:last-child td { border-bottom: 0; }
.article-content tr:hover td { background: rgba(255, 255, 255, 0.02); }
.article-content hr {
  border: 0;
  height: 1px;
  background: var(--divider);
  margin: 2em 0;
}
.article-content a {
  color: var(--accent);
  border-bottom: 1px solid rgba(0, 214, 143, 0.4);
}
.article-content a:hover { border-bottom-color: var(--accent2); }

/* ===== Article Empty ===== */
.article-empty {
  text-align: center;
  padding: 60px 20px;
  max-width: 720px;
  margin: 0 auto;
}
.article-empty i {
  font-size: 3rem;
  color: var(--text-dim);
  margin-bottom: 16px;
  display: block;
}
.article-empty h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}
.article-empty p {
  color: var(--text-sub);
  margin-bottom: 24px;
}

/* ===== Tags ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--divider);
}
.tags-label {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-right: 4px;
}
.article-tags a {
  display: inline-block;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 6px;
  padding: 4px 14px;
  font-size: 0.8125rem;
  color: var(--text-sub);
  transition: all var(--transition);
}
.article-tags a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 214, 143, 0.06);
}

/* ===== Related ===== */
.related-section {
  max-width: 860px;
  margin: 48px auto 0;
}
.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.section-head h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: #fff;
  margin: 0;
  white-space: nowrap;
}
.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 214, 143, 0.5), rgba(255, 255, 255, 0.05));
  border-radius: 2px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 214, 143, 0.45);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.related-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-alt);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.03); }
.related-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.55));
  pointer-events: none;
}
.related-body {
  padding: 18px 20px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-body h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-main);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card:hover .related-body h3 { color: var(--accent); }
.related-body p {
  font-size: 0.8125rem;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.related-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-dim);
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.related-meta span:first-child {
  color: var(--accent);
  background: rgba(0, 214, 143, 0.08);
  border-radius: 4px;
  padding: 1px 8px;
}

/* ===== Back ===== */
.article-back {
  max-width: 860px;
  margin: 36px auto 0;
  text-align: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 28px;
  border: 1px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient);
  color: #0B1220;
  box-shadow: 0 4px 20px rgba(0, 214, 143, 0.25);
}
.btn-primary:hover {
  color: #0B1220;
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0, 214, 143, 0.45);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.16);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 214, 143, 0.06);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: #080E1A;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 48px 0 24px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-brand em { font-style: normal; color: var(--accent); }
.footer-col p {
  color: var(--text-sub);
  font-size: 0.875rem;
  line-height: 1.7;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: var(--text-sub);
  font-size: 0.875rem;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.footer-bottom p {
  color: var(--text-dim);
  font-size: 0.8125rem;
  margin: 0;
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .header-tools { gap: 10px; }
  .header-search { width: 220px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card { padding: 36px 32px; }
}
@media (max-width: 768px) {
  .header-top { flex-direction: column; align-items: flex-start; gap: 8px; }
  .header-tools { width: 100%; }
  .header-search { flex: 1; width: auto; }
  .hot-words span.hot-label { display: none; }
  .channel-nav { padding-top: 4px; }
  .article-card { padding: 28px 20px; }
  .article-title { font-size: 1.375rem; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-body h3 { font-size: 1rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .section-head h2 { font-size: 1.2rem; }
}
@media (max-width: 576px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .article-card { padding: 24px 16px; border-radius: 12px; }
  .article-meta { gap: 10px; }
  .article-content { font-size: 0.9375rem; }
  .article-content h2 { font-size: 1.25rem; }
  .btn { width: 100%; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #101A33;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.10);
  --accent: #00D68F;
  --accent-cyan: #00BFFF;
  --text-primary: #EAF2FF;
  --text-secondary: #93A4C3;
  --text-muted: #5B6B8A;
  --divider: rgba(255,255,255,0.08);
  --warning: #FFB020;
  --btn-gradient: linear-gradient(135deg, #00D68F 0%, #00BFFF 100%);
  --radius: 12px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-btn: 0 0 24px rgba(0,214,143,0.45);
  --spacing-section: 80px;
  --spacing-section-mobile: 40px;
  --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础 Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

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

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

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

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

ul,
ol {
  list-style: none;
}

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

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.site-header .container {
  padding-top: 10px;
  padding-bottom: 10px;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 6px 0;
}

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

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00D68F, #00BFFF);
  position: relative;
  display: inline-block;
  box-shadow: 0 0 16px rgba(0,214,143,0.35);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M13 2L4 14h6l-1 8 9-12h-6l1-8z' fill='%230B1220'/%3E%3C/svg%3E") center/18px no-repeat;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-name em {
  font-style: normal;
  color: var(--accent);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  justify-content: flex-end;
}

.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 0 8px 0 14px;
  width: 280px;
  max-width: 100%;
  transition: border-color 0.2s;
}

.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,214,143,0.12);
}

.header-search input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  padding: 9px 0;
  flex: 1;
  width: 100%;
}

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

.header-search button {
  background: transparent;
  color: var(--text-muted);
  padding: 8px 10px;
  cursor: pointer;
  transition: color 0.2s;
}

.header-search button:hover {
  color: var(--accent);
}

.hot-words {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  white-space: nowrap;
}

.hot-label {
  color: var(--warning);
  font-weight: 600;
}

.hot-words a {
  color: var(--text-muted);
  padding: 2px 4px;
  transition: color 0.2s;
}

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

.channel-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 6px 0 2px;
  border-top: 1px solid rgba(255,255,255,0.04);
  margin-top: 4px;
}

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

.channel-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--btn-gradient);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

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

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

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

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

.site-header.scrolled .header-top {
  padding: 3px 0;
}

.site-header.scrolled .channel-nav a {
  padding: 5px 2px;
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--spacing-section) 0;
}

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

.section-head h2 {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 10px;
  position: relative;
  display: inline-block;
}

.section-head h2::before {
  content: "";
  display: block;
  width: 4px;
  height: 24px;
  background: var(--btn-gradient);
  border-radius: 4px;
  position: absolute;
  left: -18px;
  top: 50%;
  transform: translateY(-50%);
}

.section-head > p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: 8px;
}

/* ===== 分类 Hero ===== */
.category-hero {
  position: relative;
  padding: 72px 0 72px;
  background:
    radial-gradient(ellipse at 18% 50%, rgba(0,214,143,0.12), transparent 52%),
    radial-gradient(ellipse at 85% 20%, rgba(0,191,255,0.10), transparent 45%),
    linear-gradient(135deg, #0B1220 0%, #0E1830 60%, #101A33 100%);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.10;
  z-index: 0;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,214,143,0.12);
  border: 1px solid rgba(0,214,143,0.25);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero-badge i {
  font-size: 0.75rem;
}

.category-hero h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-item strong {
  font-size: 1.375rem;
  font-weight: 700;
  color: #fff;
}

.stat-item span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.hero-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.hero-card img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.hero-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(11,18,32,0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,214,143,0.3);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 100px;
}

/* ===== 卡片区 ===== */
.news-cards {
  background: var(--bg-primary);
}

.news-card {
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,214,143,0.5);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 20px rgba(0,214,143,0.08);
}

.news-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

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

.news-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11,18,32,0.4));
}

.news-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: rgba(11,18,32,0.75);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  backdrop-filter: blur(6px);
}

.news-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 8px;
  transition: color 0.25s;
}

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

.news-card-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.news-card-meta span i {
  margin-right: 4px;
  color: var(--accent);
}

.news-card-meta a {
  color: var(--accent-cyan);
  font-weight: 500;
  transition: color 0.2s;
}

.news-card-meta a:hover {
  color: var(--accent);
}

/* ===== 特征区 ===== */
.features {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.features::before {
  content: "";
  position: absolute;
  right: -120px;
  top: 20%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0,191,255,0.08), transparent 60%);
  pointer-events: none;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.feature-item {
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(14px);
  transition: border-color 0.3s, transform 0.3s;
}

.feature-item:nth-child(even) {
  transform: translateY(24px);
}

.feature-item:hover {
  border-color: rgba(0,214,143,0.4);
  transform: translateY(16px);
}

.feature-item:nth-child(even):hover {
  transform: translateY(12px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0,214,143,0.12);
  border: 1px solid rgba(0,214,143,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.feature-item h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.feature-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== 场景区 ===== */
.scenes {
  background: var(--bg-primary);
}

.scene-card {
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 28px 24px;
  height: 100%;
  backdrop-filter: blur(14px);
  transition: border-color 0.3s, background 0.3s, transform 0.3s;
}

.scene-card:hover {
  border-color: rgba(0,191,255,0.4);
  background: rgba(255,255,255,0.09);
  transform: translateY(-4px);
}

.scene-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(0,191,255,0.12);
  border: 1px solid rgba(0,191,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.125rem;
  margin-bottom: 14px;
}

.scene-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.scene-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== 流程区 ===== */
.process-section {
  background: var(--bg-secondary);
  position: relative;
}

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

.process-step {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  backdrop-filter: blur(14px);
  transition: border-color 0.3s;
}

.process-step:hover {
  border-color: rgba(0,214,143,0.4);
}

.step-num {
  width: 40px;
  height: 40px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--btn-gradient);
  color: #0B1220;
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(0,214,143,0.25);
}

.process-step h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.process-step p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.process-step:not(:last-child)::after {
  content: "\f054";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 0.75rem;
  z-index: 2;
  background: var(--bg-secondary);
  border-radius: 50%;
  padding: 2px;
}

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

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

.accordion-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius) !important;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.accordion-item:focus-within {
  border-color: rgba(0,214,143,0.4);
}

.accordion-button {
  background: transparent;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 18px 20px;
  box-shadow: none;
  line-height: 1.5;
  transition: background 0.25s, color 0.25s;
}

.accordion-button:not(.collapsed) {
  background: rgba(0,214,143,0.06);
  color: #fff;
  font-weight: 600;
  border-left: 3px solid var(--accent);
}

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

.accordion-button::after {
  filter: brightness(0) invert(1);
  opacity: 0.7;
  background-size: 14px;
  transition: transform 0.25s, opacity 0.25s;
}

.accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(120deg);
  opacity: 1;
}

.accordion-body {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.75;
  border-left: 3px solid var(--accent);
}

/* ===== 热门内容 ===== */
.hot-section {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.hot-wrap {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

.hot-section .section-head {
  text-align: left;
  margin-bottom: 0;
}

.hot-section .section-head h2 {
  font-size: 1.5rem;
}

.hot-section .section-head > p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.hot-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hot-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}

.hot-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(0,214,143,0.3);
  transform: translateX(4px);
}

.hot-index {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(0,214,143,0.12);
  border: 1px solid rgba(0,214,143,0.2);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hot-item:nth-child(2) .hot-index {
  background: rgba(0,191,255,0.12);
  border-color: rgba(0,191,255,0.25);
  color: var(--accent-cyan);
}

.hot-item:nth-child(3) .hot-index {
  background: rgba(255,176,32,0.12);
  border-color: rgba(255,176,32,0.25);
  color: var(--warning);
}

.hot-item h4 {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
  line-height: 1.5;
}

.hot-item span {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ===== 下载 CTA ===== */
.download-cta {
  padding: 28px 0;
  background: linear-gradient(135deg, #0B1220 0%, #0D1B2A 100%);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(0,214,143,0.2);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

.cta-text {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
  margin: 0;
}

.cta-text i {
  color: var(--accent);
  margin-right: 8px;
}

/* ===== 按钮 ===== */
.btn-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--btn-gradient);
  color: #0B1220;
  font-size: 1rem;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
  white-space: nowrap;
}

.btn-main:hover {
  color: #0B1220;
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn);
}

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

.btn-main.btn-lg {
  padding: 14px 34px;
  font-size: 1.0625rem;
}

.btn-main i {
  font-size: 1rem;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #070D18;
  padding: 56px 0 0;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-col .brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.footer-col .brand-mark::after {
  inset: 6px;
  background-size: 15px;
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.7;
  margin: 0;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--btn-gradient);
  border-radius: 2px;
}

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

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

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.footer-bottom p {
  margin: 4px 0;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  :root {
    --spacing-section: 60px;
  }

  .header-top {
    flex-wrap: wrap;
  }

  .header-tools {
    order: 3;
    flex-basis: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  .header-search {
    width: 60%;
  }

  .channel-nav {
    overflow-x: auto;
    gap: 20px;
    -webkit-overflow-scrolling: touch;
  }

  .category-hero {
    padding: 56px 0;
  }

  .hero-card {
    margin-top: 32px;
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .process-step:nth-child(2)::after {
    display: none;
  }

  .process-step:nth-child(n+3)::after {
    display: none;
  }

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

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 40px;
  }

  .brand-name {
    font-size: 1.125rem;
  }

  .header-search {
    width: 100%;
  }

  .hot-words {
    display: none;
  }

  .category-hero h1 {
    font-size: 2rem;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-item strong {
    font-size: 1.125rem;
  }

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

  .feature-item:nth-child(even) {
    transform: translateY(0);
  }

  .feature-item:hover,
  .feature-item:nth-child(even):hover {
    transform: translateY(-4px);
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-step::after {
    display: none !important;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
    padding: 24px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 24px;
  }
}

@media (max-width: 576px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-tools {
    flex-direction: column;
    align-items: stretch;
  }

  .header-search {
    width: 100%;
  }

  .channel-nav {
    gap: 16px;
  }

  .section-head h2 {
    font-size: 1.5rem;
  }

  .news-card-body {
    padding: 16px;
  }

  .hero-card img {
    height: 220px;
  }

  .hero-stats {
    gap: 14px;
  }

  .btn-main,
  .btn-main.btn-lg {
    width: 100%;
    justify-content: center;
  }

  .footer-col h4 {
    font-size: 0.875rem;
  }
}

/* roulang page: category2 */
:root {
    --bg-primary: #0B1220;
    --bg-secondary: #101A33;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --accent: #00D68F;
    --accent-secondary: #00BFFF;
    --text-primary: #EAF2FF;
    --text-secondary: #93A4C3;
    --text-muted: #5B6B8A;
    --divider: rgba(255,255,255,0.08);
    --warning: #FFB020;
    --btn-gradient: linear-gradient(135deg, #00D68F 0%, #00BFFF 100%);
    --radius-card: 12px;
    --radius-btn: 12px;
    --radius-tag: 6px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
    --glow-accent: 0 0 24px rgba(0,214,143,0.45);
    --section-padding: 80px;
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.75;
    font-size: 1rem;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* Section spacing */
.site-main > section { padding: var(--section-padding) 0; }
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.section-label::before {
    content: "";
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: var(--btn-gradient);
}
.section-title {
    font-size: clamp(1.75rem, 2.5vw + 0.5rem, 2rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    max-width: 680px;
    margin-bottom: 40px;
}

/* Buttons */
.btn-main {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--btn-gradient);
    color: #08131F;
    font-size: 1rem;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0,214,143,0.25);
}
.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-accent);
    color: #08131F;
}
.btn-main:active { transform: translateY(1px); box-shadow: 0 2px 10px rgba(0,214,143,0.3); }
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(255,255,255,0.16);
    cursor: pointer;
    transition: var(--transition);
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0,214,143,0.08);
}
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11,18,32,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--divider);
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(11,18,32,0.95);
    box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.site-header .container { padding-top: 10px; padding-bottom: 10px; transition: var(--transition); }
.site-header.scrolled .container { padding-top: 4px; padding-bottom: 4px; }
.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}
.brand-mark {
    display: inline-block;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--btn-gradient);
    position: relative;
    flex-shrink: 0;
}
.brand-mark::after {
    content: "";
    position: absolute;
    inset: 6px;
    border-radius: 5px;
    background: var(--bg-primary);
    clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
}
.brand-name em {
    font-style: normal;
    background: var(--btn-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.header-tools {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.header-search {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}
.header-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,214,143,0.15);
}
.header-search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    padding: 8px 14px;
    font-size: 0.875rem;
    width: 200px;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 14px;
    cursor: pointer;
    transition: var(--transition);
}
.header-search button:hover { color: var(--accent); }
.hot-words {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
}
.hot-label {
    color: var(--warning);
    font-weight: 600;
}
.hot-words a {
    color: var(--text-secondary);
    transition: var(--transition);
}
.hot-words a:hover { color: var(--accent); }
.channel-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-top: 10px;
    border-top: 1px solid transparent;
    padding-top: 8px;
    flex-wrap: wrap;
}
.channel-nav a {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding: 4px 2px;
    position: relative;
    font-weight: 500;
    white-space: nowrap;
}
.channel-nav a::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--btn-gradient);
    transition: var(--transition);
}
.channel-nav a:hover { color: var(--accent); }
.channel-nav a:hover::after { width: 100%; }
.channel-nav a.active { color: var(--accent); }
.channel-nav a.active::after { width: 100%; }
.nav-toggler {
    display: none;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    width: 42px;
    height: 38px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: var(--transition);
}
.nav-toggler:hover { border-color: var(--accent); }
.nav-toggler span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--text-secondary);
    transition: var(--transition);
}

/* Hero */
.cat-hero {
    position: relative;
    padding: 80px 0 70px;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-bottom: 1px solid var(--divider);
    overflow: hidden;
}
.cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11,18,32,0.92) 0%, rgba(16,26,51,0.78) 50%, rgba(0,214,143,0.14) 100%);
    z-index: 1;
}
.cat-hero::after {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,214,143,0.18) 0%, transparent 70%);
    z-index: 0;
}
.cat-hero .container { position: relative; z-index: 2; }
.breadcrumb-line {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.breadcrumb-line a { color: var(--text-secondary); }
.breadcrumb-line a:hover { color: var(--accent); }
.breadcrumb-line span { color: var(--accent); margin: 0 6px; }
.cat-hero h1 {
    font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 16px;
    color: #fff;
    letter-spacing: 0.01em;
}
.cat-hero .hero-desc {
    font-size: 1.06rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 32px;
}
.cat-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Intro */
.cat-intro { background: var(--bg-primary); }
.cat-intro .intro-box {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    padding: 24px 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.cat-intro .intro-box p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.85;
}

/* Cards grid */
.cat-cards { background: var(--bg-secondary); position: relative; overflow: hidden; }
.cat-cards::before {
    content: "";
    position: absolute;
    top: 40px;
    right: -80px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,191,255,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.cat-cards .container { position: relative; z-index: 2; }
.cards-vertical {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card-vertical {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: var(--transition);
    box-shadow: var(--shadow-card);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.card-vertical:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.45), 0 0 20px rgba(0,214,143,0.08);
}
.card-vertical .card-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #0d1526;
}
.card-vertical .card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.card-vertical:hover .card-media img { transform: scale(1.03); }
.card-vertical .card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(11,18,32,0.5) 100%);
    pointer-events: none;
}
.card-vertical .card-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(0,214,143,0.18);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-tag);
    border: 1px solid rgba(0,214,143,0.3);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.card-vertical .card-body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.card-vertical .card-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
    transition: var(--transition);
}
.card-vertical:hover .card-body h3 { color: var(--accent); }
.card-vertical .card-body p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 14px;
}
.card-vertical .card-body .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--text-muted);
    padding-top: 12px;
    border-top: 1px solid var(--divider);
}
.card-vertical .card-body .card-meta a {
    color: var(--accent);
    font-weight: 500;
    font-size: 0.875rem;
}
.card-vertical .card-body .card-meta a:hover { text-decoration: underline; }

/* Features */
.cat-features { background: var(--bg-primary); position: relative; }
.cat-features::after {
    content: "";
    position: absolute;
    bottom: 20px;
    left: -60px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,214,143,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.features-stagger {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.feature-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px 28px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: var(--transition);
}
.feature-item:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3), 0 0 16px rgba(0,214,143,0.06);
    transform: translateY(-4px);
}
.feature-item.offset-right { margin-top: 40px; margin-left: 30px; }
.feature-item.offset-left { margin-top: 40px; }
.feature-item:nth-child(1) { margin-top: 0; }
.feature-item:nth-child(2) { margin-top: 40px; margin-left: 30px; }
.feature-item:nth-child(3) { margin-top: 40px; }
.feature-item:nth-child(4) { margin-top: 40px; margin-left: 30px; }
.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,214,143,0.12);
    border: 1px solid rgba(0,214,143,0.25);
    color: var(--accent);
    font-size: 1.35rem;
    margin-bottom: 18px;
    transition: var(--transition);
}
.feature-item:hover .feature-icon {
    background: var(--btn-gradient);
    color: #08131F;
    box-shadow: 0 0 20px rgba(0,214,143,0.3);
}
.feature-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.feature-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Scenarios */
.cat-scenarios { background: var(--bg-secondary); }
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.scenario-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px 22px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.scenario-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 28px rgba(0,0,0,0.35);
}
.scenario-card .scenario-num {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.08em;
    background: rgba(0,214,143,0.1);
    border: 1px solid rgba(0,214,143,0.2);
    border-radius: 20px;
    padding: 3px 14px;
    display: inline-block;
    margin-bottom: 16px;
}
.scenario-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}
.scenario-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Flow */
.cat-flow { background: var(--bg-primary); position: relative; }
.cat-flow::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,191,255,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.flow-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    counter-reset: flow;
}
.flow-steps::before {
    content: "";
    position: absolute;
    top: 36px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0,214,143,0.15) 0%, rgba(0,191,255,0.35) 100%);
    z-index: 0;
}
.flow-step {
    text-align: center;
    position: relative;
    z-index: 1;
}
.flow-step .step-node {
    width: 72px;
    height: 72px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    box-shadow: 0 0 20px rgba(0,214,143,0.12);
    position: relative;
    z-index: 2;
    transition: var(--transition);
}
.flow-step:hover .step-node {
    background: var(--btn-gradient);
    color: #08131F;
    box-shadow: 0 0 30px rgba(0,214,143,0.35);
    transform: scale(1.05);
}
.flow-step h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.flow-step p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.55;
    padding: 0 6px;
}

/* FAQ */
.cat-faq { background: var(--bg-secondary); }
.faq-accordion {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.faq-item.active {
    border-left: 3px solid var(--accent);
    background: rgba(255,255,255,0.08);
}
.faq-item .faq-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    border: none;
    padding: 20px 24px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}
.faq-item .faq-trigger:hover { color: var(--accent); }
.faq-item.active .faq-trigger { font-weight: 600; color: #fff; }
.faq-item .faq-trigger .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}
.faq-item.active .faq-trigger .faq-icon {
    background: var(--btn-gradient);
    color: #08131F;
    border-color: transparent;
    transform: rotate(45deg);
}
.faq-item .faq-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 24px;
}
.faq-item.active .faq-panel {
    max-height: 200px;
    padding: 0 24px 20px;
}
.faq-item .faq-panel p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA bar */
.cat-cta { background: var(--bg-primary); padding: 32px 0 !important; }
.cta-strip {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.cta-strip p {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}
.cta-strip p span {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 4px;
}

/* Footer */
.site-footer {
    background: #070D18;
    border-top: 1px solid var(--divider);
    padding: 56px 0 0;
    color: var(--text-secondary);
}
.footer-grid {
    display: grid;
    grid-template-columns: 3fr 2fr 2fr 2fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand .brand-mark {
    width: 24px;
    height: 24px;
    border-radius: 6px;
}
.footer-brand .brand-mark::after { inset: 5px; }
.footer-brand em {
    font-style: normal;
    background: var(--btn-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.footer-col p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-top: 8px;
}
.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col ul a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition);
}
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid var(--divider);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 992px) {
    :root { --section-padding: 56px; }
    .header-tools {
        flex-wrap: nowrap;
        width: 100%;
        justify-content: space-between;
    }
    .hot-words { display: none; }
    .channel-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 16px 0 8px;
        width: 100%;
        border-top: 1px solid var(--divider);
    }
    .channel-nav.open { display: flex; }
    .channel-nav a { font-size: 1rem; }
    .nav-toggler { display: flex; }
    .cards-vertical { grid-template-columns: repeat(2, 1fr); }
    .scenario-grid { grid-template-columns: repeat(2, 1fr); }
    .flow-steps { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .flow-steps::before { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .feature-item:nth-child(2), .feature-item:nth-child(4) { margin-left: 0; }
}
@media (max-width: 768px) {
    :root { --section-padding: 40px; }
    .container { padding-left: 16px; padding-right: 16px; }
    .cat-hero { padding: 56px 0 48px; }
    .header-search input { width: 150px; }
    .features-stagger { grid-template-columns: 1fr; }
    .feature-item:nth-child(2), .feature-item:nth-child(4) { margin-left: 0; margin-top: 0; }
    .feature-item:nth-child(1), .feature-item:nth-child(3) { margin-top: 0; }
    .cards-vertical { grid-template-columns: 1fr; }
    .cta-strip { flex-direction: column; text-align: center; padding: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 576px) {
    .btn-main, .btn-ghost { width: 100%; }
    .cat-hero-actions { flex-direction: column; }
    .scenario-grid { grid-template-columns: 1fr; }
    .flow-steps { grid-template-columns: 1fr; }
    .header-search { width: 100%; }
    .header-search input { flex: 1; width: auto; }
    .header-tools { flex-direction: column; align-items: stretch; gap: 10px; }
    .header-top { flex-direction: column; align-items: flex-start; }
    .nav-toggler { position: absolute; right: 16px; top: 16px; }
    .brand { font-size: 1.25rem; }
}