/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --bg-root: #070B16;
  --bg-sub: #0C1424;
  --bg-deep: #0D1626;
  --bg-read: #0B1322;
  --glass-bg: rgba(15, 24, 43, 0.6);
  --glass-border: rgba(139, 165, 255, 0.14);
  --text-title: #F2F6FF;
  --text-body: #ACB8D6;
  --text-mute: #6D7B9E;
  --brand-teal: #35DCC2;
  --brand-blue: #1B8CFF;
  --brand-amber: #FFC549;
  --radius-lg: 18px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --shadow-card: 0 16px 40px -18px rgba(0, 0, 0, 0.6);
  --shadow-card-hover: 0 22px 50px -18px rgba(0, 0, 0, 0.75);
  --shadow-btn: 0 8px 30px rgba(53, 220, 194, 0.32);
  --btn-grad: linear-gradient(135deg, #35DCC2 0%, #1B8CFF 100%);
  --font-cn: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
}

/* ===== Reset / 基础 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-root);
  color: var(--text-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: 100%; }
table { border-collapse: collapse; }
a:focus, button:focus, [tabindex]:focus {
  outline: 2px solid rgba(53, 220, 194, 0.6);
  outline-offset: 3px;
}

/* ===== 容器 ===== */
.row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.columns { padding-left: 12px; padding-right: 12px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 11, 22, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  height: 68px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}
.logo-main {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brand-teal);
  background: rgba(53, 220, 194, 0.12);
  padding: 2px 8px;
  border-radius: 6px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
  min-width: 0;
}
.nav-chip {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-body);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
  white-space: nowrap;
  border: none;
  background: transparent;
  cursor: pointer;
}
.nav-chip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-title);
}
.nav-chip.active {
  background: var(--btn-grad);
  color: #fff;
  box-shadow: 0 0 16px rgba(53, 220, 194, 0.25);
}
.header-cta { flex-shrink: 0; }
.cta-short { display: none; }

/* ===== 按钮体系 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0 26px;
  height: 44px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  cursor: pointer;
  border: none;
  line-height: 1;
  white-space: nowrap;
}
.btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex-shrink: 0;
}
.btn-primary {
  background: var(--btn-grad);
  box-shadow: var(--shadow-btn);
  color: #fff;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(53, 220, 194, 0.45);
  filter: brightness(1.05);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text-title);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.32);
  transform: translateY(-2px);
}
.btn-ghost:active { transform: translateY(0); }
.btn-sm { height: 38px; padding: 0 20px; font-size: 0.85rem; }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 84px 0 64px;
  background:
    linear-gradient(rgba(7, 11, 22, 0.82), rgba(7, 11, 22, 0.92)),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(620px 420px at 18% 28%, rgba(53, 220, 194, 0.13), transparent 70%),
    radial-gradient(520px 360px at 82% 72%, rgba(27, 140, 255, 0.12), transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.5;
  pointer-events: none;
}
.hero .row { position: relative; z-index: 2; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(1.6rem, 3vw + 1rem, 2.5rem);
  font-weight: 800;
  color: var(--text-title);
  line-height: 1.22;
  margin-bottom: 16px;
  letter-spacing: 0;
}
.hero-sub {
  font-size: 1rem;
  color: var(--text-body);
  margin-bottom: 30px;
  max-width: 430px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 浏览器窗口 */
.browser-frame {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.browser-dot { width: 12px; height: 12px; border-radius: 50%; }
.browser-dot.red { background: #FF5F57; }
.browser-dot.yellow { background: #FEBC2E; }
.browser-dot.green { background: #28C840; }
.browser-body { padding: 12px; }
.browser-body img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 12px;
}
.floating-chips {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.floating-chip {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text-title);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* ===== 板块通用 ===== */
.section-pad { padding: 80px 0; }
.section-title {
  font-size: clamp(1.25rem, 1.6vw + 0.8rem, 1.8rem);
  font-weight: 700;
  color: var(--text-title);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-sub {
  text-align: center;
  color: var(--text-mute);
  font-size: 0.9rem;
  margin-bottom: 44px;
  line-height: 1.6;
}

/* ===== 功能轮播 ===== */
.slider-section { background: var(--bg-sub); }
.slider-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}
.slider-stage {
  position: relative;
  overflow: hidden;
}
.slider-track {
  display: flex;
  transition: transform 0.5s ease;
}
.slide-item { flex: 0 0 100%; min-width: 0; }
.slide-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(7, 11, 22, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-title);
  font-size: 1.4rem;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.slider-arrow:hover {
  background: rgba(53, 220, 194, 0.22);
  border-color: var(--brand-teal);
  color: var(--brand-teal);
}
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
.slider-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}
.slider-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}
.slider-dots .dot.active {
  background: var(--brand-teal);
  width: 20px;
}
.slider-tabs { display: flex; flex-direction: column; }
.slider-tab {
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.slider-tab:last-child { border-bottom: none; }
.slider-tab:hover { background: rgba(255, 255, 255, 0.02); }
.slider-tab.active {
  border-left-color: var(--brand-teal);
  background: rgba(53, 220, 194, 0.05);
}
.tab-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--brand-teal);
}
.slider-tab h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-title);
  margin: 6px 0 4px;
}
.slider-tab p {
  font-size: 0.85rem;
  color: var(--text-mute);
  line-height: 1.5;
}

/* ===== 系统要求 ===== */
.sysreq-section { background: var(--bg-root); }
.req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.req-card {
  position: relative;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 70%);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.req-card:hover {
  border-color: rgba(139, 165, 255, 0.4);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.req-card.recommended { border-color: rgba(255, 197, 73, 0.35); }
.req-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  background: rgba(255, 197, 73, 0.12);
  color: var(--brand-amber);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
}
.req-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 20px;
}
.req-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.88rem;
}
.req-item:last-child { border-bottom: none; }
.req-item .label { color: var(--text-mute); }
.req-item .value {
  font-family: var(--font-mono);
  color: var(--text-title);
  text-align: right;
  white-space: nowrap;
}

/* ===== FAQ ===== */
.faq-section { background: var(--bg-sub); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.faq-item.active {
  border-color: rgba(53, 220, 194, 0.35);
  background: rgba(53, 220, 194, 0.03);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 48px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-title);
  cursor: pointer;
  user-select: none;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}
.faq-icon {
  position: relative;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--brand-teal);
  border-radius: 2px;
  transition: transform 0.3s ease;
}
.faq-icon::before { left: 3px; right: 3px; top: 10px; height: 2px; }
.faq-icon::after { top: 3px; bottom: 3px; left: 10px; width: 2px; }
.faq-item.active .faq-icon::after { transform: scaleY(0); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.active .faq-a { max-height: 320px; }
.faq-a-inner {
  padding: 0 20px 18px;
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* ===== 评价墙 ===== */
.reviews-section { background: var(--bg-root); }
.reviews-layout {
  display: grid;
  grid-template-columns: 25% 75%;
  gap: 24px;
  align-items: start;
}
.rating-summary {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 70%);
  box-shadow: var(--shadow-card);
}
.rating-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-title);
  font-family: var(--font-mono);
  line-height: 1;
}
.rating-stars {
  color: var(--brand-amber);
  font-size: 1.1rem;
  letter-spacing: 3px;
}
.rating-base {
  font-size: 0.78rem;
  color: var(--text-mute);
  line-height: 1.5;
}
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-content: start;
}
.review-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 70%);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.review-card:hover {
  transform: translateY(-2px);
  border-color: rgba(139, 165, 255, 0.4);
  box-shadow: var(--shadow-card-hover);
}
.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(53, 220, 194, 0.28), rgba(27, 140, 255, 0.28));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-teal);
  flex-shrink: 0;
}
.review-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-title);
}
.review-time {
  font-size: 0.72rem;
  color: var(--text-mute);
  font-family: var(--font-mono);
}
.review-stars {
  color: var(--brand-amber);
  font-size: 0.78rem;
  margin-left: auto;
  letter-spacing: 1px;
}
.review-text {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* ===== 下载面板 ===== */
.download-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--bg-root), rgba(12, 20, 36, 0.55), var(--bg-root));
}
.download-panel {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 36px;
  align-items: center;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 70%);
  box-shadow: var(--shadow-card);
}
.download-buttons { display: flex; flex-direction: column; gap: 18px; }
.download-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-title);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}
.download-btn:hover {
  border-color: var(--brand-teal);
  background: rgba(53, 220, 194, 0.1);
  color: var(--brand-teal);
  transform: translateY(-2px);
}
.download-btn:active { transform: translateY(0); }
.download-btn svg { width: 20px; height: 20px; fill: currentColor; flex-shrink: 0; }
.download-btn.btn-primary {
  background: var(--btn-grad);
  color: #fff;
  box-shadow: var(--shadow-btn);
  border: none;
}
.download-btn.btn-primary:hover {
  filter: brightness(1.05);
  color: #fff;
  box-shadow: 0 10px 40px rgba(53, 220, 194, 0.45);
}
.download-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-mute);
  margin-top: 6px;
}
.qr-box {
  width: 140px;
  background: #fff;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
.qr-box p {
  font-size: 0.72rem;
  color: #333;
  font-family: var(--font-cn);
  line-height: 1.4;
  text-align: center;
}
.qr-grid {
  display: grid;
  grid-template-columns: repeat(5, 6px);
  grid-template-rows: repeat(5, 6px);
  gap: 2px;
}
.qr-grid span { background: #111; border-radius: 1px; }
.qr-grid span:nth-child(3n+1) { background: transparent; }
.qr-grid span:nth-child(5n+2) { background: #111; }
.qr-grid span:nth-child(7n+3) { background: transparent; }

/* ===== 最新资讯 CMS ===== */
.news-section { background: var(--bg-sub); }
.cms-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cms-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: row;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 70%);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.cms-card:hover {
  border-color: rgba(139, 165, 255, 0.4);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.cms-thumb-link { flex-shrink: 0; display: block; overflow: hidden; }
.cms-thumb {
  width: 140px;
  height: 100%;
  min-height: 96px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.cms-card:hover .cms-thumb { transform: scale(1.05); }
.cms-card-body {
  padding: 16px 18px 14px;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}
.cms-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cms-card-title a { color: inherit; transition: color 0.3s ease; }
.cms-card-title a:hover { color: var(--brand-teal); }
.cms-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-body);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.cms-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--text-mute);
  margin-top: auto;
}
.chip-tag {
  background: rgba(255, 197, 73, 0.12);
  color: var(--brand-amber);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  white-space: nowrap;
}
.cms-card-meta time { font-family: var(--font-mono); }
.read-more {
  color: var(--brand-teal);
  margin-left: auto;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.3s ease;
}
.read-more:hover { color: var(--brand-amber); }
.cms-empty {
  grid-column: 1 / -1;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px dashed rgba(139, 165, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: 48px 20px;
  text-align: center;
  color: var(--text-mute);
  font-size: 0.95rem;
}

/* ===== 底部品牌 CTA ===== */
.cta-section { padding: 80px 0 90px; }
.cta-banner {
  background:
    radial-gradient(500px 300px at 30% 50%, rgba(53, 220, 194, 0.14), transparent 70%),
    radial-gradient(420px 260px at 75% 50%, rgba(27, 140, 255, 0.14), transparent 70%),
    var(--bg-deep);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  padding: 60px 40px;
  text-align: center;
}
.cta-banner h2 {
  color: var(--text-title);
  font-size: clamp(1.4rem, 2vw + 1rem, 2rem);
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}
.cta-banner .btn { min-width: 180px; }

/* ===== 页脚 ===== */
.site-footer {
  background: #050810;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 0.8fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-desc {
  font-size: 0.85rem;
  color: var(--text-mute);
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-mute);
  transition: color 0.3s ease;
}
.footer-col ul a:hover { color: var(--brand-teal); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom .copyright {
  color: var(--text-mute);
  font-size: 0.82rem;
}
.footer-bottom .icp {
  color: var(--text-mute);
  font-size: 0.78rem;
  margin-top: 4px;
}

/* ===== 移动端底部操作条 ===== */
.mobile-bar {
  display: none;
}

/* ===== 响应式 ===== */
@media screen and (max-width: 64rem) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .slider-layout { grid-template-columns: 1fr; }
  .reviews-layout { grid-template-columns: 1fr; }
  .rating-summary { flex-direction: row; align-items: center; gap: 24px; padding: 20px 24px; }
  .rating-num { font-size: 2.6rem; }
  .rating-stars { font-size: 1rem; }
  .rating-base { font-size: 0.8rem; }
  .download-panel { grid-template-columns: 1fr; justify-items: center; }
  .qr-box { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media screen and (max-width: 40rem) {
  .row { padding: 0 16px; }
  .site-header { height: auto; }
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding-top: 10px;
    padding-bottom: 8px;
    gap: 10px;
  }
  .logo-main { font-size: 1.1rem; }
  .logo-sub { font-size: 0.7rem; padding: 1px 6px; }
  .main-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    gap: 4px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .nav-chip { padding: 6px 14px; font-size: 0.8rem; }
  .header-cta .btn { height: 38px; padding: 0 18px; font-size: 0.85rem; }
  .cta-full { display: none; }
  .cta-short { display: inline; }
  .hero { padding: 56px 0 48px; }
  .hero-actions .btn { width: 100%; }
  .browser-body img { height: 200px; }
  .section-pad { padding: 48px 0; }
  .req-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .slider-arrow { display: none; }
  .slider-tab { padding: 16px 12px; }
  .cms-list { grid-template-columns: 1fr; }
  .cms-thumb { width: 120px; min-height: 84px; }
  .download-panel { padding: 24px 18px; }
  .download-row { flex-direction: column; align-items: stretch; }
  .download-btn { justify-content: center; width: 100%; }
  .cta-banner { padding: 40px 20px; }
  .cta-banner .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-col:nth-child(n+2) { display: none; }
  .site-footer { padding: 40px 0 20px; }
  .mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 60;
    height: 56px;
    background: rgba(7, 11, 22, 0.92);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0 16px;
  }
  body { padding-bottom: 64px; }
  .mb-info { display: flex; flex-direction: column; line-height: 1.3; }
  .mb-ver { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-body); }
  .mb-free { font-size: 0.7rem; color: var(--text-mute); }
  .mobile-bar .btn { height: 38px; padding: 0 20px; font-size: 0.85rem; }
}

/* roulang page: category1 */
:root {
            --bg-dark: #070B16;
            --bg-panel: #0C1424;
            --bg-deep: #050810;
            --bg-card: rgba(15, 24, 43, 0.6);
            --border-soft: rgba(139, 165, 255, 0.14);
            --border-light: rgba(255, 255, 255, 0.06);
            --accent: #35DCC2;
            --accent-rgb: 53, 220, 194;
            --accent-blue: #1B8CFF;
            --amber: #FFC549;
            --text-title: #F2F6FF;
            --text-body: #ACB8D6;
            --text-muted: #6D7B9E;
            --radius-lg: 18px;
            --radius-md: 14px;
            --shadow-card: 0 16px 40px -18px rgba(0, 0, 0, 0.6);
            --font-cn: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
            --header-h: 68px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 0.95rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        ul, ol {
            list-style: none;
        }

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

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            line-height: 1.4;
        }

        .row {
            max-width: 1200px;
            margin: 0 auto;
        }

        .columns {
            padding-left: 16px;
            padding-right: 16px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 22, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            min-height: var(--header-h);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 16px;
            min-height: var(--header-h);
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo-main {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: -0.02em;
        }

        .logo-sub {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.12);
            padding: 2px 8px;
            border-radius: 999px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 12px;
            flex-shrink: 0;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-chip:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-title);
        }

        .nav-chip.active {
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            color: #fff;
            box-shadow: 0 0 16px rgba(var(--accent-rgb), 0.25);
        }

        .header-cta {
            margin-left: auto;
            flex-shrink: 0;
        }

        .cta-short {
            display: none;
        }

        /* 按钮体系 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 0 28px;
            height: 44px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            line-height: 1;
        }

        .btn svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            color: #fff;
            box-shadow: 0 8px 30px rgba(var(--accent-rgb), 0.32);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 40px rgba(var(--accent-rgb), 0.45);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.3);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-title);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.35);
            color: var(--text-title);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .nav-chip:focus-visible,
        a:focus-visible {
            outline: 2px solid rgba(var(--accent-rgb), 0.6);
            outline-offset: 3px;
        }

        /* 分类页横幅 */
        .category-banner {
            position: relative;
            min-height: 220px;
            background: url('/assets/images/backpic/back-1.webp') center 30% / cover no-repeat;
            display: flex;
            align-items: center;
            padding: 48px 0;
            overflow: hidden;
        }

        .category-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 22, 0.9) 0%, rgba(7, 11, 22, 0.6) 100%);
        }

        .category-banner::after {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            right: -100px;
            top: -100px;
            background: radial-gradient(circle, rgba(var(--accent-rgb), 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-banner-content {
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .banner-breadcrumb {
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .banner-breadcrumb a {
            color: var(--text-muted);
        }

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

        .banner-breadcrumb .current {
            color: var(--text-body);
        }

        .category-banner h1 {
            font-size: clamp(1.6rem, 3vw + 1rem, 2.5rem);
            font-weight: 800;
            color: var(--text-title);
            margin: 0 0 12px 0;
            letter-spacing: -0.01em;
        }

        .banner-desc {
            font-size: 0.95rem;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 640px;
            margin-bottom: 16px;
        }

        .banner-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-body);
            border: 1px solid var(--border-light);
        }

        .tag-amber {
            background: rgba(255, 197, 73, 0.12);
            color: var(--amber);
            border-color: transparent;
        }

        .tag-cyan {
            background: rgba(var(--accent-rgb), 0.1);
            color: var(--accent);
            border-color: transparent;
        }

        /* 卡片网格区 */
        .card-grid-section {
            padding: 64px 0 40px;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: clamp(1.25rem, 1.6vw + 0.8rem, 1.8rem);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .section-header p {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 560px;
        }

        .cat-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(140%);
            -webkit-backdrop-filter: blur(16px) saturate(140%);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 70%);
            background-repeat: no-repeat;
        }

        .cat-card:hover {
            transform: translateY(-3px);
            border-color: rgba(139, 165, 255, 0.4);
            box-shadow: 0 20px 50px -18px rgba(0, 0, 0, 0.7);
        }

        .cat-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-panel);
        }

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

        .cat-card:hover .cat-card-img img {
            transform: scale(1.05);
        }

        .cat-card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cat-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .cat-card-body p {
            font-size: 0.875rem;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 16px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .card-link:hover {
            color: var(--amber);
        }

        .card-link svg {
            width: 14px;
            height: 14px;
            transition: transform 0.3s ease;
        }

        .card-link:hover svg {
            transform: translateX(4px);
        }

        /* 对比信息卡 */
        .compare-section {
            padding: 32px 0 48px;
        }

        .compare-card {
            background: #0D1626;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .compare-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent), var(--accent-blue));
            opacity: 0.6;
        }

        .compare-card:hover {
            border-color: var(--border-soft);
            transform: translateY(-2px);
        }

        .compare-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(var(--accent-rgb), 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .compare-icon svg {
            width: 24px;
            height: 24px;
            fill: var(--accent);
        }

        .compare-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .compare-card p {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0 56px;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

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

        .faq-item.open {
            border-color: rgba(var(--accent-rgb), 0.25);
            background: rgba(var(--accent-rgb), 0.04);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 52px;
            padding: 0 20px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-title);
            user-select: none;
            transition: background 0.3s ease;
        }

        .faq-q:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-q .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            position: relative;
            margin-left: 16px;
        }

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

        .faq-q .faq-icon::before {
            width: 14px;
            height: 2px;
            top: 10px;
            left: 4px;
        }

        .faq-q .faq-icon::after {
            width: 2px;
            height: 14px;
            top: 4px;
            left: 10px;
        }

        .faq-item.open .faq-q .faq-icon::after {
            transform: scaleY(0);
        }

        .faq-a {
            display: none;
            padding: 0 20px 18px;
            font-size: 0.875rem;
            line-height: 1.8;
            color: var(--text-body);
        }

        .faq-item.open .faq-a {
            display: block;
        }

        /* CTA 条 */
        .cta-banner {
            position: relative;
            padding: 72px 0 80px;
            text-align: center;
            background: radial-gradient(circle at 20% 30%, rgba(var(--accent-rgb), 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(27, 140, 255, 0.12) 0%, transparent 45%),
                var(--bg-panel);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
            margin-top: 24px;
        }

        .cta-banner h2 {
            font-size: clamp(1.25rem, 1.6vw + 0.8rem, 1.8rem);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 460px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .cta-banner .btn-primary,
        .cta-banner .btn-secondary {
            height: 48px;
            padding: 0 32px;
            font-size: 1rem;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

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

        .footer-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.875rem;
            color: var(--text-muted);
            transition: color 0.3s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 移动端底部操作条 */
        .mobile-dock {
            display: none;
        }

        /* 响应式 */
        @media (min-width: 40.0625em) and (max-width: 64em) {
            .card-grid-section {
                padding: 48px 0 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-banner {
                padding: 56px 0 64px;
            }
        }

        @media (max-width: 40rem) {
            :root {
                --header-h: 60px;
            }

            .site-header {
                min-height: 60px;
            }

            .header-inner {
                flex-wrap: wrap;
                gap: 8px;
                padding: 0 16px;
                padding-top: 10px;
            }

            .logo-main {
                font-size: 1.1rem;
            }

            .logo-sub {
                font-size: 0.72rem;
                padding: 1px 6px;
            }

            .header-cta .btn {
                height: 36px;
                padding: 0 16px;
                font-size: 0.8125rem;
            }

            .cta-full {
                display: none;
            }

            .cta-short {
                display: inline;
            }

            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                overflow-y: hidden;
                padding: 6px 2px 10px;
                margin-left: 0;
                scrollbar-width: none;
                -ms-overflow-style: none;
            }

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

            .nav-chip {
                font-size: 0.8125rem;
                padding: 6px 14px;
            }

            .category-banner {
                min-height: 180px;
                padding: 36px 0;
            }

            .category-banner h1 {
                font-size: 1.6rem;
            }

            .banner-desc {
                font-size: 0.875rem;
            }

            .card-grid-section {
                padding: 40px 0 24px;
            }

            .section-header {
                margin-bottom: 24px;
            }

            .card-grid-section .columns {
                padding-left: 12px;
                padding-right: 12px;
            }

            .cat-card-body {
                padding: 16px 18px 20px;
            }

            .compare-section {
                padding: 24px 0 32px;
            }

            .compare-section .columns {
                margin-bottom: 16px;
            }

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

            .footer-col {
                display: none;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }

            .cta-banner {
                padding: 48px 0 56px;
                margin-top: 8px;
            }

            .cta-banner .btn-group {
                flex-direction: column;
                align-items: center;
                padding: 0 24px;
            }

            .cta-banner .btn-primary,
            .cta-banner .btn-secondary {
                width: 100%;
                max-width: 320px;
            }

            .mobile-dock {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: 56px;
                z-index: 60;
                align-items: center;
                justify-content: space-between;
                background: rgba(7, 11, 22, 0.92);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                border-top: 1px solid var(--border-light);
                padding: 0 16px;
            }

            .mobile-dock-info {
                font-size: 0.72rem;
                color: var(--text-muted);
                line-height: 1.4;
                display: flex;
                flex-direction: column;
            }

            .mobile-dock-info strong {
                color: var(--text-title);
                font-size: 0.8rem;
            }

            .mobile-dock .btn-primary {
                height: 36px;
                padding: 0 18px;
                font-size: 0.8125rem;
                box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.35);
            }

            body {
                padding-bottom: 56px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 8px 12px 0;
            }

            .nav-chip {
                padding: 6px 12px;
                font-size: 0.78rem;
            }

            .category-banner .row {
                padding: 0 12px;
            }

            .card-grid-section .row {
                padding: 0 12px;
            }

            .compare-section .row {
                padding: 0 12px;
            }

            .faq-section {
                padding: 32px 0 40px;
            }

            .faq-list {
                padding: 0 12px;
            }

            .faq-q {
                padding: 0 16px;
                font-size: 0.875rem;
            }
        }

/* roulang page: article */
:root {
    --bg: #070B16;
    --bg-panel: #0C1424;
    --bg-card: rgba(15, 24, 43, 0.6);
    --bg-article: #0B1322;
    --bg-deep: #050810;
    --border: rgba(139, 165, 255, 0.14);
    --border-light: rgba(255, 255, 255, 0.06);
    --primary: #35DCC2;
    --primary-end: #1B8CFF;
    --accent: #FFC549;
    --title-color: #F2F6FF;
    --body-color: #ACB8D6;
    --muted: #6D7B9E;
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-card: 0 16px 40px -18px rgba(0, 0, 0, 0.6);
    --font-cn: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --font-mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
    --space-lg: 80px;
    --space-md: 60px;
    --space-sm: 40px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-cn);
    background: var(--bg);
    color: var(--body-color);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

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

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

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

ul,
ol {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.row {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(7, 11, 22, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-light);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-main {
    font-size: 20px;
    font-weight: 800;
    color: var(--title-color);
    letter-spacing: 0.02em;
}

.logo-sub {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(53, 220, 194, 0.12);
    padding: 2px 8px;
    border-radius: 6px;
    letter-spacing: 0.05em;
}

.main-nav {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.nav-chip {
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--body-color);
    text-decoration: none;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.nav-chip:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--title-color);
}

.nav-chip:focus-visible {
    outline: 2px solid rgba(53, 220, 194, 0.6);
    outline-offset: 3px;
}

.nav-chip.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-end) 100%);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 0 16px rgba(53, 220, 194, 0.25);
}

.header-cta {
    flex-shrink: 0;
}

.cta-short {
    display: none;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    font-family: var(--font-cn);
}

.btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-end) 100%);
    color: #fff;
    box-shadow: 0 8px 30px rgba(53, 220, 194, 0.32);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(53, 220, 194, 0.45);
    color: #fff;
    filter: brightness(1.08);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 6px 24px rgba(53, 220, 194, 0.3);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
    outline: 2px solid rgba(53, 220, 194, 0.6);
    outline-offset: 3px;
}

.btn-secondary {
    background: transparent;
    color: #F2F6FF;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.32);
    color: #fff;
    transform: translateY(-2px);
}

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

.btn-block {
    width: 100%;
}

.btn-lg {
    height: 48px;
    padding: 0 36px;
    font-size: 16px;
}

.btn-sm {
    height: 32px;
    padding: 0 16px;
    font-size: 13px;
}

/* ===== Badges / Chips / Tags ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.02em;
}

.badge-accent {
    background: rgba(255, 197, 73, 0.12);
    color: var(--accent);
}

.badge-cyan {
    background: rgba(53, 220, 194, 0.1);
    color: var(--primary);
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--body-color);
    background: rgba(255, 255, 255, 0.08);
    text-decoration: none;
    line-height: 1.4;
    transition: all 0.25s ease;
}

.chip:hover {
    background: rgba(53, 220, 194, 0.12);
    color: var(--primary);
}

.chip-accent {
    background: rgba(255, 197, 73, 0.12);
    color: var(--accent);
}

.chip-accent:hover {
    background: rgba(255, 197, 73, 0.2);
    color: var(--accent);
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--body-color);
    background: rgba(53, 220, 194, 0.08);
    border: 1px solid rgba(53, 220, 194, 0.14);
    transition: all 0.25s ease;
}

.tag:hover {
    color: var(--primary);
    border-color: rgba(53, 220, 194, 0.4);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 12px;
}

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

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

.breadcrumb .sep {
    color: rgba(109, 123, 158, 0.5);
}

.breadcrumb .current {
    color: var(--muted);
    cursor: default;
}

/* ===== Article Banner ===== */
.article-banner {
    position: relative;
    min-height: 120px;
    background: linear-gradient(180deg, rgba(7, 11, 22, 0.9), rgba(7, 11, 22, 0.96)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    display: flex;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid rgba(139, 165, 255, 0.08);
    overflow: hidden;
}

.article-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(600px 200px at 80% 0%, rgba(53, 220, 194, 0.06), transparent 70%);
    pointer-events: none;
}

.article-banner .row {
    position: relative;
    z-index: 1;
}

.article-title {
    font-size: clamp(1.6rem, 3vw + 0.8rem, 2.4rem);
    font-weight: 800;
    color: var(--title-color);
    line-height: 1.3;
    margin: 0 0 16px;
    max-width: 720px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--muted);
}

.article-meta .chip {
    font-size: 12px;
}

.meta-time,
.meta-views {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
}

/* ===== Article Layout ===== */
.article-page {
    padding: 40px 0 64px;
}

.article-layout {
    display: flex;
    gap: 36px;
    align-items: flex-start;
}

.article-main {
    flex: 1;
    min-width: 0;
    max-width: 720px;
}

.article-card {
    background: var(--bg-article);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid rgba(139, 165, 255, 0.08);
}

.article-body {
    font-size: 15px;
    line-height: 1.85;
    color: var(--body-color);
}

.article-body> :first-child {
    margin-top: 0;
}

.article-body h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--title-color);
    margin-top: 1.6em;
    margin-bottom: 0.6em;
    line-height: 1.4;
}

.article-body h3 {
    font-size: 1.12rem;
    font-weight: 600;
    color: var(--title-color);
    margin-top: 1.3em;
    margin-bottom: 0.5em;
    line-height: 1.4;
}

.article-body p {
    margin-bottom: 0.9em;
    max-width: 680px;
}

.article-body ul,
.article-body ol {
    margin-bottom: 1em;
    padding-left: 0.5em;
}

.article-body ul li,
.article-body ol li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 6px;
}

.article-body ul li::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 11px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(53, 220, 194, 0.4);
}

.article-body ol {
    counter-reset: li;
}

.article-body ol li {
    counter-increment: li;
}

.article-body ol li::before {
    content: counter(li);
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    padding: 2px 6px;
    background: rgba(53, 220, 194, 0.08);
    border-radius: 6px;
    line-height: 1.4;
}

.article-body blockquote {
    border-left: 3px solid var(--accent);
    background: rgba(255, 197, 73, 0.06);
    padding: 14px 18px;
    margin: 1.2em 0;
    border-radius: 0 10px 10px 0;
    color: var(--title-color);
    font-style: normal;
}

.article-body blockquote p {
    margin-bottom: 0.3em;
}

.article-body blockquote p:last-child {
    margin-bottom: 0;
}

.article-body figure {
    margin: 1.4em 0;
}

.article-body figure img {
    width: 100%;
    border-radius: 12px;
    border: 1px solid rgba(139, 165, 255, 0.1);
}

.article-body figure figcaption {
    font-size: 13px;
    color: var(--muted);
    text-align: center;
    margin-top: 8px;
}

.article-body code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: rgba(53, 220, 194, 0.08);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: 4px;
}

.article-body pre {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    overflow-x: auto;
    margin: 1.2em 0;
}

.article-body pre code {
    background: none;
    color: var(--title-color);
    padding: 0;
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

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

/* Not Found */
.article-not-found {
    text-align: center;
    padding: 48px 24px;
}

.article-not-found .not-found-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: rgba(53, 220, 194, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-not-found .not-found-icon svg {
    width: 36px;
    height: 36px;
    fill: var(--primary);
}

.article-not-found h2 {
    font-size: 1.2rem;
    color: var(--title-color);
    margin-bottom: 8px;
}

.article-not-found p {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 20px;
}

/* ===== Article Bottom ===== */
.article-bottom {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

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

.post-nav-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 20px;
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.3s ease;
    min-height: 80px;
    justify-content: center;
}

.post-nav-card:hover {
    border-color: rgba(53, 220, 194, 0.35);
    background: rgba(15, 24, 43, 0.8);
    transform: translateY(-2px);
}

.post-nav-card.next {
    text-align: right;
}

.post-nav-label {
    font-size: 12px;
    color: var(--muted);
    font-weight: 500;
}

.post-nav-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--title-color);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-nav-card:hover .post-nav-title {
    color: var(--primary);
}

/* ===== Sidebar ===== */
.article-sidebar {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.sidebar-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.sidebar-card h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--title-color);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(139, 165, 255, 0.08);
    position: relative;
}

.sidebar-card h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
}

.download-card {
    text-align: center;
}

.download-card-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
}

.download-card-head h3 {
    border: none;
    padding: 0;
    margin: 0;
}

.download-card-head h3::after {
    display: none;
}

.download-card .version-info {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 18px;
    text-align: center;
}

.download-card .btn {
    margin-bottom: 10px;
}

.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.category-chips .chip {
    font-size: 12px;
}

.category-chips .chip.active {
    background: rgba(53, 220, 194, 0.14);
    color: var(--primary);
    border: 1px solid rgba(53, 220, 194, 0.25);
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.recent-list li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.recent-list li:last-child {
    border-bottom: none;
}

.recent-list a {
    display: block;
    font-size: 13px;
    color: var(--body-color);
    text-decoration: none;
    line-height: 1.5;
    transition: color 0.2s ease;
    margin-bottom: 4px;
}

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

.recent-list .recent-date {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
}

/* ===== Related Section ===== */
.related-section {
    padding: 64px 0;
    background: rgba(12, 20, 36, 0.4);
    border-top: 1px solid var(--border-light);
}

.related-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.related-head h2 {
    font-size: clamp(1.25rem, 1.6vw + 0.8rem, 1.8rem);
    font-weight: 700;
    color: var(--title-color);
    margin: 0;
}

.related-link {
    font-size: 13px;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.related-link:hover {
    color: var(--accent);
}

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

.related-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px) saturate(130%);
    -webkit-backdrop-filter: blur(12px) saturate(130%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
    display: block;
}

.related-card:hover {
    transform: translateY(-3px);
    border-color: rgba(53, 220, 194, 0.3);
    box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.7);
}

.related-card:hover .related-thumb img {
    transform: scale(1.05);
}

.related-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.related-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(7, 11, 22, 0.4));
}

.related-content {
    padding: 20px;
}

.related-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--title-color);
    line-height: 1.5;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.25s ease;
}

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

.related-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--muted);
}

.related-meta .chip {
    font-size: 11px;
    padding: 2px 10px;
}

.related-meta time {
    font-family: var(--font-mono);
}

/* ===== CTA Banner ===== */
.bottom-cta {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(180deg, rgba(7, 11, 22, 0.85), rgba(7, 11, 22, 0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    text-align: center;
    overflow: hidden;
    border-top: 1px solid var(--border-light);
}

.bottom-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(53, 220, 194, 0.12), transparent 70%);
    pointer-events: none;
}

.bottom-cta .row {
    position: relative;
    z-index: 1;
}

.bottom-cta h2 {
    font-size: clamp(1.4rem, 2.5vw + 0.8rem, 2rem);
    font-weight: 800;
    color: var(--title-color);
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.bottom-cta p {
    font-size: 15px;
    color: var(--body-color);
    max-width: 520px;
    margin: 0 auto 28px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-light);
    padding: 48px 0 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding: 24px 0 40px;
}

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

.footer-desc {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
    max-width: 280px;
    margin-top: 10px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--title-color);
    margin-bottom: 16px;
    letter-spacing: 0.03em;
}

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

.footer-col ul a {
    font-size: 13px;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom .copyright {
    font-size: 13px;
    color: var(--muted);
}

.footer-bottom .icp {
    font-size: 12px;
    color: rgba(109, 123, 158, 0.7);
}

/* ===== Mobile Bottom Bar ===== */
.mobile-bottom-bar {
    display: none;
}

@media (max-width: 40em) {
    .mobile-bottom-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: rgba(7, 11, 22, 0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        z-index: 100;
        border-top: 1px solid var(--border-light);
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
    }

    .mobile-bottom-bar .mobile-version {
        font-family: var(--font-mono);
        font-size: 12px;
        color: var(--muted);
    }

    .mobile-bottom-bar .btn {
        height: 38px;
        padding: 0 22px;
        font-size: 13px;
    }

    body {
        padding-bottom: 56px;
    }

    .site-footer {
        padding-bottom: 72px;
    }
}

/* ===== Responsive ===== */
@media (max-width: 64.0625em) {
    .article-layout {
        flex-direction: column;
    }

    .article-main {
        max-width: 100%;
    }

    .article-sidebar {
        width: 100%;
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 20px;
    }

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

@media (max-width: 40em) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0 8px;
        gap: 8px;
    }

    .site-header {
        position: sticky;
    }

    .logo {
        flex: 1;
    }

    .header-cta .cta-full {
        display: none;
    }

    .header-cta .cta-short {
        display: inline;
    }

    .header-cta .btn {
        padding: 0 16px;
        height: 38px;
        font-size: 14px;
    }

    .main-nav {
        width: 100%;
        order: 3;
        gap: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
        justify-content: flex-start;
        scrollbar-width: none;
    }

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

    .nav-chip {
        padding: 7px 14px;
        font-size: 13px;
        flex-shrink: 0;
    }

    .article-banner {
        min-height: 100px;
        padding: 24px 0;
    }

    .article-title {
        font-size: 1.3rem;
        margin-bottom: 12px;
    }

    .article-meta {
        gap: 8px;
        font-size: 12px;
    }

    .article-page {
        padding: 24px 0 40px;
    }

    .article-card {
        padding: 20px;
        border-radius: 14px;
    }

    .article-body {
        font-size: 14px;
        line-height: 1.8;
    }

    .article-body h2 {
        font-size: 1.15rem;
    }

    .post-nav {
        grid-template-columns: 1fr;
    }

    .post-nav-card.next {
        text-align: left;
    }

    .related-section {
        padding: 40px 0;
    }

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

    .related-head {
        margin-bottom: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .bottom-cta {
        padding: 48px 0;
    }

    .bottom-cta .btn {
        width: 100%;
        max-width: 280px;
    }

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

    .footer-col {
        display: none;
    }

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

    .article-sidebar {
        grid-template-columns: 1fr;
    }

    .sidebar-card {
        padding: 20px;
    }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --bg:#070B16;
  --panel:#0C1424;
  --panel2:#0D1626;
  --read:#0B1322;
  --border:rgba(255,255,255,0.08);
  --border-soft:rgba(255,255,255,0.05);
  --primary:#35DCC2;
  --primary2:#1B8CFF;
  --amber:#FFC549;
  --title:#F2F6FF;
  --body:#ACB8D6;
  --muted:#6D7B9E;
  --glass-bg:rgba(15,24,43,0.6);
  --glass-border:rgba(139,165,255,0.14);
  --radius:18px;
  --radius-sm:14px;
  --shadow-card:0 16px 40px -18px rgba(0,0,0,0.6);
  --shadow-btn:0 8px 30px rgba(53,220,194,0.32);
  --font-mono:"SFMono-Regular","Cascadia Code","Roboto Mono",Consolas,monospace;
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}

/* ===== 基础重置 ===== */
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--body);
  font-family:var(--font-body);
  font-size:.95rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
.row{max-width:1200px;margin:0 auto;}
h1,h2,h3,h4{color:var(--title);line-height:1.3;font-weight:700;}
h1{font-size:clamp(1.6rem,3vw + 1rem,2.5rem);font-weight:800;}
h2{font-size:clamp(1.25rem,1.6vw + 0.8rem,1.8rem);font-weight:700;margin-bottom:.6em;}
h3{font-size:1.15rem;font-weight:600;}
h4{font-size:.95rem;font-weight:600;}
p{margin-bottom:.8em;}
.mono{font-family:var(--font-mono);}
a:focus-visible,.btn:focus-visible,.nav-chip:focus-visible,.faq-item summary:focus-visible{
  outline:2px solid rgba(53,220,194,.6);
  outline-offset:3px;
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(7,11,22,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.row.header-inner{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
  padding:0 24px;
  gap:16px;
}
.logo{display:flex;align-items:baseline;gap:6px;flex-shrink:0;}
.logo-main{font-size:1.3rem;font-weight:800;color:var(--title);letter-spacing:.2px;}
.logo-sub{font-size:.78rem;color:var(--muted);font-weight:500;}
.main-nav{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.nav-chip{
  padding:8px 18px;
  border-radius:999px;
  font-size:14px;
  line-height:1;
  color:var(--body);
  white-space:nowrap;
  transition:background .2s,color .2s,box-shadow .2s;
}
.nav-chip:hover{background:rgba(255,255,255,.06);color:var(--title);}
.nav-chip.active{
  background:linear-gradient(135deg,#35DCC2,#1B8CFF);
  color:#fff;
  font-weight:600;
  box-shadow:0 0 16px rgba(53,220,194,.25);
}
.header-cta .btn{height:40px;padding:0 22px;font-size:14px;}
.cta-short{display:none;}

/* ===== 按钮体系 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  font-weight:600;
  font-size:15px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn svg{fill:currentColor;width:18px;height:18px;}
.btn-primary{
  height:44px;
  padding:0 28px;
  background:linear-gradient(135deg,#35DCC2,#1B8CFF);
  color:#fff;
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 40px rgba(53,220,194,.45);
}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{
  height:44px;
  padding:0 24px;
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:#fff;
}
.btn-secondary:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.35);}

/* ===== 页面横幅 ===== */
.page-banner{
  background:
    linear-gradient(180deg,rgba(7,11,22,.55),rgba(7,11,22,.96)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:64px 0 88px;
  border-bottom:1px solid rgba(255,255,255,.04);
}
.breadcrumbs{
  font-size:13px;
  color:var(--muted);
  margin-bottom:16px;
}
.breadcrumbs a{color:var(--body);}
.breadcrumbs a:hover{color:var(--primary);}
.banner-badge{
  display:inline-block;
  background:rgba(255,197,73,.12);
  color:var(--amber);
  font-size:13px;
  padding:4px 10px;
  border-radius:6px;
  margin-bottom:14px;
  font-weight:600;
  letter-spacing:.4px;
}
.page-banner h1{margin-bottom:14px;}
.banner-intro{
  max-width:680px;
  font-size:15px;
  color:var(--body);
}

/* ===== 主体布局 ===== */
.main-content{
  max-width:1200px;
  margin:0 auto;
  padding:44px 24px 80px;
  display:flex;
  gap:32px;
  align-items:flex-start;
  justify-content:center;
}
.content-main{flex:1 1 auto;max-width:720px;min-width:0;}
.content-side{flex:0 0 300px;width:300px;}
.sticky-side{
  position:sticky;
  top:90px;
  display:flex;
  flex-direction:column;
  gap:24px;
}

/* ===== 阅读块 ===== */
.article-block{
  background:var(--read);
  border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius);
  padding:28px;
  margin-bottom:24px;
}
.article-block h2{padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.05);margin-bottom:16px;}
.article-block p{font-size:15px;color:var(--body);}
.toc-card{
  background:var(--read);
  border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius);
  padding:18px 22px;
  margin-bottom:24px;
}
.toc-card ul{display:flex;flex-wrap:wrap;gap:8px 22px;}
.toc-card a{color:var(--muted);font-size:14px;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
.toc-card a:hover{color:var(--primary);border-color:var(--primary);}

/* ===== 登录方式概览 ===== */
.overview-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:18px;
}
.ov-card{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius-sm);
  padding:18px 16px;
  transition:transform .2s,border-color .2s;
}
.ov-card:hover{transform:translateY(-2px);border-color:rgba(53,220,194,.35);}
.ov-icon{width:34px;height:34px;border-radius:10px;background:rgba(53,220,194,.1);display:flex;align-items:center;justify-content:center;margin-bottom:12px;}
.ov-icon svg{width:18px;height:18px;fill:var(--primary);}
.ov-card h3{font-size:15px;margin-bottom:6px;}
.ov-card p{font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:0;}

/* ===== 步骤列表 ===== */
.steps{counter-reset:step;margin:16px 0 8px;}
.steps li{
  counter-increment:step;
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:13px 0;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.steps li:last-child{border-bottom:0;}
.steps li::before{
  content:counter(step);
  width:30px;
  height:30px;
  flex-shrink:0;
  background:rgba(53,220,194,.1);
  color:var(--primary);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:14px;
  margin-top:2px;
}
.steps li p{font-size:14px;color:var(--body);margin:0;}

/* ===== 全宽图片 ===== */
.full-image{margin:18px 0 10px;}
.full-image img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.05);
}
.full-image figcaption{color:var(--muted);font-size:12px;padding:8px 4px 0;}

/* ===== 特性网格 ===== */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px;}
.feature-item{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.05);
  border-radius:var(--radius-sm);
  padding:16px;
  display:flex;
  gap:12px;
  align-items:flex-start;
  transition:transform .2s,border-color .2s;
}
.feature-item:hover{transform:translateY(-2px);border-color:rgba(255,197,73,.35);}
.f-icon{
  width:24px;
  height:24px;
  flex-shrink:0;
  border-radius:6px;
  background:rgba(255,197,73,.12);
  display:flex;
  align-items:center;
  justify-content:center;
}
.f-icon svg{width:13px;height:13px;fill:var(--amber);}
.feature-item h3{font-size:14px;margin-bottom:4px;}
.feature-item p{font-size:13px;color:var(--muted);line-height:1.65;margin:0;}

/* ===== 排查列表 ===== */
.check-list li{
  display:flex;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid rgba(255,255,255,.05);
  font-size:14px;
  color:var(--body);
}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  content:'';
  width:8px;
  height:8px;
  border-radius:50%;
  background:rgba(53,220,194,.7);
  flex-shrink:0;
  margin-top:8px;
}

/* ===== 提示框 ===== */
.callout-box{
  background:rgba(53,220,194,.06);
  border:1px solid rgba(53,220,194,.22);
  border-radius:var(--radius-sm);
  padding:14px 16px;
  font-size:14px;
  color:var(--body);
  margin:16px 0 6px;
}

/* ===== FAQ ===== */
.faq-list{margin-top:12px;}
.faq-item{
  margin-bottom:12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .2s,background .2s;
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:16px 18px;
  font-weight:600;
  color:var(--title);
  font-size:15px;
  -webkit-user-select:none;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{width:20px;height:20px;flex-shrink:0;position:relative;}
.faq-icon::before,.faq-icon::after{
  content:'';
  position:absolute;
  background:var(--primary);
  border-radius:2px;
  transition:transform .2s;
}
.faq-icon::before{width:14px;height:2px;top:9px;left:3px;}
.faq-icon::after{width:2px;height:14px;top:3px;left:9px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);}
.faq-item[open]{
  background:rgba(53,220,194,.04);
  border-color:rgba(53,220,194,.3);
}
.faq-answer{padding:0 18px 18px;color:var(--body);font-size:14px;line-height:1.7;}

/* ===== 玻璃卡片 ===== */
.glass-card{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass-card::before{
  content:'';
  position:absolute;
  left:0;right:0;top:0;
  height:120px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),transparent 70%);
  pointer-events:none;
}
.glass-card>*{position:relative;}

.side-title{font-size:16px;margin-bottom:14px;}
.side-download{text-align:center;}
.side-download .logo-line{font-size:15px;font-weight:700;color:var(--title);margin-bottom:4px;}
.side-ver{color:var(--muted);font-size:12px;font-family:var(--font-mono);margin-bottom:16px;}
.side-download .btn{width:100%;margin-bottom:8px;}
.side-note{font-size:12px;color:var(--muted);margin-top:8px;}

.side-tips li{
  border-bottom:1px solid rgba(255,255,255,.06);
  padding:9px 0;
  font-size:14px;
  color:var(--body);
}
.side-tips li:last-child{border-bottom:0;}
.side-tips li::before{
  content:'';
  display:inline-block;
  width:6px;height:6px;
  background:var(--primary);
  border-radius:50%;
  margin-right:8px;
  vertical-align:middle;
}

.side-news li{
  border-bottom:1px solid rgba(255,255,255,.06);
  padding:8px 0;
  font-size:14px;
  color:var(--body);
}
.side-news li:last-child{border-bottom:0;}
.side-news .tag{
  display:inline-block;
  background:rgba(53,220,194,.1);
  color:var(--primary);
  font-size:12px;
  padding:1px 6px;
  border-radius:4px;
  margin-bottom:4px;
}

/* ===== 底部 CTA ===== */
.bottom-cta{
  background:
    linear-gradient(120deg,rgba(53,220,194,.18),rgba(27,140,255,.12)),
    var(--bg);
  padding:72px 24px;
  text-align:center;
  border-top:1px solid rgba(255,255,255,.04);
  border-bottom:1px solid rgba(255,255,255,.04);
}
.cta-inner{max-width:720px;margin:0 auto;}
.cta-inner h2{margin-bottom:10px;}
.cta-inner p{color:var(--muted);font-size:15px;margin-bottom:22px;}
.cta-inner .btn{height:52px;padding:0 42px;font-size:16px;}
.cta-inner .btn svg{width:20px;height:20px;}

/* ===== 页脚 ===== */
.site-footer{
  background:#050810;
  border-top:1px solid rgba(255,255,255,.06);
  padding:56px 0 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:32px;
  margin-bottom:36px;
}
.footer-brand .logo{margin-bottom:12px;}
.footer-desc{color:var(--muted);font-size:14px;max-width:260px;line-height:1.7;}
.footer-col h4{color:var(--title);font-size:14px;margin-bottom:14px;}
.footer-col li{margin-bottom:8px;font-size:14px;}
.footer-col a{color:var(--body);transition:color .2s;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  color:var(--muted);
  font-size:13px;
}

/* ===== 移动端底部操作条 ===== */
.mobile-dock{
  position:fixed;
  left:0;right:0;bottom:0;
  height:56px;
  background:rgba(7,11,22,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.06);
  display:none;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:60;
}
.dock-info{font-size:12px;color:var(--muted);line-height:1.4;}
.dock-info strong{color:var(--title);font-family:var(--font-mono);font-weight:600;}
.mobile-dock .btn{height:38px;padding:0 18px;font-size:14px;}

/* ===== 响应式 ===== */
@media screen and (max-width:64em){
  .main-content{flex-direction:column;align-items:center;padding:36px 20px 64px;}
  .content-side{width:100%;max-width:720px;}
  .sticky-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .sticky-side .glass-card{flex:1;min-width:240px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:40em){
  .row.header-inner{
    flex-wrap:wrap;
    height:auto;
    padding:10px 16px 8px;
    gap:8px;
  }
  .header-cta{margin-left:auto;}
  .header-cta .btn{height:38px;padding:0 16px;}
  .cta-full{display:none;}
  .cta-short{display:inline;}
  .main-nav{
    order:3;
    width:100%;
    display:flex;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    padding-bottom:4px;
    gap:6px;
    scrollbar-width:none;
  }
  .main-nav::-webkit-scrollbar{display:none;}
  .nav-chip{flex-shrink:0;}
  .page-banner{padding:40px 0 56px;}
  .main-content{padding:28px 16px 56px;}
  .article-block{padding:20px;}
  .overview-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .sticky-side{flex-direction:column;}
  .sticky-side .glass-card{min-width:0;}
  .site-footer{padding:40px 0 96px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-col:not(:first-child){display:none;}
  .footer-bottom{flex-direction:column;gap:6px;align-items:flex-start;}
  .mobile-dock{display:flex;}
  body{padding-bottom:62px;}
  .bottom-cta{padding:52px 20px;}
  .bottom-cta .btn{width:100%;max-width:340px;}
}