/* roulang page: index */
:root {
  --bg-dark: #0B1220;
  --bg-section: #111C30;
  --bg-light: #F8FAFC;
  --primary: #2563EB;
  --cyan: #00E5FF;
  --purple: #8B5CF6;
  --text-dark: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light: #F8FAFC;
  --text-slate: #CBD5E1;
  --border-light: #E2E8F0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-cyan: 0 0 24px rgba(0, 229, 255, 0.35);
  --shadow-purple: 0 0 40px rgba(139, 92, 246, 0.25);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.2);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-light);
  color: var(--text-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { margin-bottom: 44px; }
.section-head.center { text-align: center; }
.section-head h2 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-light);
  margin-top: 12px;
  letter-spacing: -0.01em;
}
.section-head p { color: var(--text-slate); margin-top: 12px; font-size: 1rem; max-width: 640px; }
.section-head.center p { margin-left: auto; margin-right: auto; }
.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.link-arrow {
  color: var(--cyan);
  font-size: 0.95rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease;
}
.link-arrow:hover { gap: 12px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 600;
  border: none;
  transition: all .3s ease;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
}
.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 0 28px rgba(0, 229, 255, 0.4);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: scale(0.98);
  box-shadow: none;
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #E2E8F0;
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.45);
  transform: translateY(-2px);
}
.btn-lg { padding: 14px 34px; font-size: 1rem; }
.btn-sm { padding: 9px 22px; font-size: 0.9rem; }
.btn-block { width: 100%; padding: 12px 20px; }
.btn:focus-visible {
  outline: 3px solid rgba(0, 229, 255, 0.5);
  outline-offset: 3px;
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.01em;
}
.main-nav { display: flex; gap: 8px; }
.nav-link {
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  position: relative;
  transition: color .2s, background .2s;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.06);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: #F1F5F9;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 12px;
  height: 40px;
  width: 190px;
  transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 0.85rem;
  color: var(--text-dark);
  width: 100%;
}
.search-box input::placeholder { color: #94A3B8; }
.search-box svg { color: #94A3B8; flex-shrink: 0; }
.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background: #fff;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: transform .3s;
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  padding: 16px 24px 24px;
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.08);
}
.mobile-menu.open { display: block; }
.mobile-link {
  display: block;
  padding: 12px 8px;
  font-weight: 500;
  color: var(--text-body);
  border-bottom: 1px solid #F1F5F9;
}
.mobile-link.active { color: var(--primary); }
.mobile-tools {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mobile-tools .search-box { width: 100%; }

/* Hero */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: var(--bg-dark);
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(11, 18, 32, 0.92) 20%, rgba(11, 18, 32, 0.68) 55%, rgba(11, 18, 32, 0.35) 100%);
  z-index: -1;
}
.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: 26px 26px;
  z-index: -1;
  pointer-events: none;
}
.hero-content {
  padding-top: 80px;
  padding-bottom: 80px;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #67e8f9;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 6px 16px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-top: 22px;
  letter-spacing: -0.02em;
}
.hero-sub {
  color: #CBD5E1;
  font-size: 1.08rem;
  line-height: 1.8;
  margin-top: 20px;
  max-width: 640px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}
.scroll-indicator {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-indicator span {
  width: 4px;
  height: 8px;
  background: var(--cyan);
  border-radius: 4px;
  animation: scrollHint 1.8s ease infinite;
}
@keyframes scrollHint {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* 卖点区 */
.features-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.features-section::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  right: -100px;
  top: -100px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
  pointer-events: none;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: start;
}
.features-intro {
  position: sticky;
  top: 110px;
}
.features-intro h2 {
  color: var(--text-light);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.25;
  margin-top: 14px;
}
.features-intro p {
  color: var(--text-slate);
  margin-top: 16px;
  font-size: 1rem;
}
.features-intro .link-arrow { margin-top: 20px; }
.features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(12px);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-card);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(0, 229, 255, 0.2));
  color: var(--cyan);
  margin-bottom: 18px;
}
.feature-card h3 {
  color: #F1F5F9;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.feature-card p {
  color: #94A3B8;
  font-size: 0.92rem;
  line-height: 1.7;
}

/* 演示区 */
.demo-section {
  background: var(--bg-section);
  position: relative;
  overflow: hidden;
}
.demo-section::before {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  left: -80px;
  bottom: -100px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.demo-text h2 {
  color: var(--text-light);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 14px;
}
.demo-text > p {
  color: var(--text-slate);
  margin-top: 16px;
  font-size: 0.98rem;
}
.demo-list {
  list-style: none;
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.demo-list li {
  display: flex;
  gap: 10px;
  color: #CBD5E1;
  font-size: 0.95rem;
}
.demo-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.15);
  border: 2px solid var(--cyan);
  flex-shrink: 0;
  margin-top: 4px;
}
.demo-list strong { color: #F1F5F9; font-weight: 600; }
.browser-frame {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(15, 23, 42, 0.85);
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.browser-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.browser-bar .red { background: #F87171; }
.browser-bar .yellow { background: #FBBF24; }
.browser-bar .green { background: #34D399; }
.browser-url {
  flex: 1;
  margin-left: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  height: 28px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 0.75rem;
  color: #94A3B8;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.browser-body img {
  width: 100%;
  height: auto;
  min-height: 280px;
  object-fit: cover;
}

/* 证据区 */
.evidence-section {
  background: var(--bg-dark);
  position: relative;
}
.evidence-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.3), transparent);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform .3s, border-color .3s;
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.35);
}
.stat-num {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  display: block;
  color: #94A3B8;
  font-size: 0.9rem;
  margin-top: 10px;
}
.evidence-brands {
  margin-top: 48px;
  text-align: center;
}
.evidence-brands > span {
  color: var(--text-slate);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 16px;
}
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.brand-wall span {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 6px 18px;
  color: #CBD5E1;
  font-size: 0.85rem;
}

/* 资讯区 */
.news-section {
  background: var(--bg-section);
}
.news-section .section-head h2 {
  color: var(--text-light);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform .3s, border-color .3s, background .3s;
  min-height: 220px;
}
.news-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(0, 229, 255, 0.35);
}
.news-cat {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 500;
  color: #67E8F9;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 14px;
}
.news-card h3 {
  color: #F1F5F9;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}
.news-card p {
  color: #94A3B8;
  font-size: 0.9rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-date {
  color: #64748B;
  font-size: 0.8rem;
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-date::before {
  content: '📅';
  font-size: 0.9rem;
}
.news-empty {
  grid-column: 1 / -1;
  border: 2px dashed rgba(148, 163, 184, 0.3);
  border-radius: 20px;
  padding: 60px 24px;
  text-align: center;
  color: #64748B;
}
.empty-icon {
  display: block;
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.news-empty p { font-size: 0.95rem; }

/* 价格区 */
.pricing-section {
  background: var(--bg-dark);
  position: relative;
}
.pricing-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 70%);
  pointer-events: none;
}
.pricing-section .section-head h2 {
  color: var(--text-light);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.price-card {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 34px 28px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  transition: transform .3s, border-color .3s;
}
.price-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.3);
}
.price-card.featured {
  border: 1px solid transparent;
  background: linear-gradient(rgba(17, 28, 48, 0.9), rgba(17, 28, 48, 0.9)) padding-box,
              linear-gradient(135deg, var(--primary), var(--cyan), var(--purple)) border-box;
  box-shadow: var(--shadow-purple);
  transform: scale(1.02);
}
.price-card.featured:hover { transform: scale(1.04); }
.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.35);
}
.price-card h3 {
  color: #F1F5F9;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.price-num {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.price-unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: #94A3B8;
}
.price-desc {
  color: #94A3B8;
  font-size: 0.88rem;
  margin-top: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 18px;
}
.price-list {
  list-style: none;
  margin: 20px 0 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.price-list li {
  color: #CBD5E1;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.price-list li::before {
  content: '';
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  border: 2px solid #10B981;
  flex-shrink: 0;
  margin-top: 4px;
}

/* FAQ */
.faq-section {
  background: var(--bg-section);
}
.faq-section .section-head h2 {
  color: var(--text-light);
}
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .3s;
}
.faq-item.open {
  border-color: rgba(0, 229, 255, 0.35);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  color: #F1F5F9;
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  transition: background .2s;
}
.faq-q:hover { background: rgba(255, 255, 255, 0.04); }
.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform .3s ease;
}
.faq-icon::before {
  top: 9px;
  left: 0;
  width: 20px;
  height: 2px;
}
.faq-icon::after {
  top: 0;
  left: 9px;
  width: 2px;
  height: 20px;
}
.faq-item.open .faq-icon::after {
  transform: scaleY(0);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a p {
  padding: 0 24px 22px;
  color: #94A3B8;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* CTA 表单 */
.cta-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
  padding: 100px 0;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.25), transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.2), transparent 50%),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: auto, auto, 26px 26px, 26px 26px;
  pointer-events: none;
}
.cta-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  padding: 48px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.cta-head { text-align: center; margin-bottom: 34px; }
.cta-head h2 {
  color: #fff;
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.3;
}
.cta-head p {
  color: #CBD5E1;
  margin-top: 12px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-grid .btn-block { grid-column: 1 / -1; }
.form-grid input,
.form-grid textarea {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 13px 18px;
  color: #F1F5F9;
  font-size: 0.9rem;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-grid textarea {
  grid-column: 1 / -1;
  resize: vertical;
  min-height: 100px;
}
.form-grid input::placeholder,
.form-grid textarea::placeholder { color: #64748B; }
.form-grid input:focus,
.form-grid textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.12);
}
.form-note {
  text-align: center;
  color: #64748B;
  font-size: 0.78rem;
  margin-top: 16px;
}

/* 页脚 */
.site-footer {
  background: #0A0F1E;
  color: #94A3B8;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 64px 0 40px;
}
.footer-brand .footer-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  max-width: 300px;
}
.footer-col h4 {
  color: #E2E8F0;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a,
.footer-col span {
  display: block;
  color: #94A3B8;
  font-size: 0.88rem;
  padding: 5px 0;
  transition: color .2s;
}
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: #64748B;
}

/* 浮动 CTA */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 14px 28px;
  border-radius: 999px;
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4), var(--shadow-cyan);
  transition: transform .3s, box-shadow .3s;
}
.float-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.5);
}
.float-cta-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 响应式 */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .main-nav { display: none; }
  .header-tools .search-box { display: none; }
  .hamburger { display: flex; }
  .features-grid { grid-template-columns: 1fr; gap: 36px; }
  .features-intro { position: static; }
  .demo-grid { grid-template-columns: 1fr; gap: 44px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .price-card.featured { transform: none; }
  .price-card.featured:hover { transform: translateY(-6px); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 1.75rem; }
  .hero h1 { font-size: 2.15rem; }
  .hero-sub { font-size: 0.98rem; }
  .hero-actions .btn { width: 100%; }
  .features-list { grid-template-columns: 1fr; }
  .stat-num { font-size: 2rem; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid textarea { grid-column: 1; }
  .cta-card { padding: 34px 24px; }
  .cta-head h2 { font-size: 1.5rem; }
  .float-cta { padding: 16px; }
  .float-cta .float-cta-text { display: none; }
  .float-cta { border-radius: 50%; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { height: 64px; }
  .mobile-menu { top: 64px; }
  .hero h1 { font-size: 1.8rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-card { padding: 20px 14px; }
  .stat-num { font-size: 1.6rem; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .brand-wall span { padding: 5px 12px; font-size: 0.78rem; }
  .demo-list li { font-size: 0.88rem; }
  .price-card { padding: 26px 20px; }
}

/* roulang page: category1 */
:root {
  --primary: #2563EB;
  --electric: #00E5FF;
  --energy: #8B5CF6;
  --dark: #0B1220;
  --dark-2: #111C30;
  --text-body: #0F172A;
  --text-sub: #64748B;
  --text-light: #CBD5E1;
  --text-dim: #94A3B8;
  --border-light: #E2E8F0;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --glass-border-hover: rgba(255,255,255,0.28);
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-glow: 0 0 24px rgba(0,229,255,0.35);
  --shadow-glow-lg: 0 0 42px rgba(0,229,255,0.5);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.75;
  color: var(--text-body);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button, input, textarea { font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.25rem; }

/* ===== Header 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226,232,240,0.8);
  box-shadow: 0 1px 8px rgba(15,23,42,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-body);
  white-space: nowrap;
  transition: opacity 0.2s;
}
.brand-logo:hover { opacity: 0.85; }
.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-size: 1.15rem;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}
.main-nav a.nav-link {
  position: relative;
  padding: 0.45rem 0.1rem;
  color: #334155;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s, border-color 0.2s;
}
.main-nav a.nav-link:hover {
  color: var(--primary);
}
.main-nav a.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--electric));
  border-radius: 2px;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.header-search {
  display: flex;
  align-items: center;
  background: #F1F5F9;
  border-radius: 9999px;
  padding: 0.45rem 0.9rem;
  width: 210px;
  border: 1px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.1);
  background: #fff;
}
.header-search svg { flex-shrink: 0; color: var(--text-sub); }
.header-search input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 0.85rem;
  padding: 0 0.5rem;
  color: var(--text-body);
}
.header-search input::placeholder { color: #94A3B8; }
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.4rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}
.header-cta:hover {
  box-shadow: var(--shadow-glow-lg);
  transform: translateY(-1px);
  filter: brightness(1.05);
}
.header-cta:active { transform: scale(0.97); }
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--text-body);
  font-size: 1.15rem;
  cursor: pointer;
}
.mobile-panel {
  display: none;
  padding: 1rem 0 1.25rem;
  border-top: 1px solid var(--border-light);
  background: #fff;
}
.mobile-panel.open { display: block; }
.mobile-panel a,
.mobile-panel .mobile-search {
  display: block;
  padding: 0.75rem 0;
  color: var(--text-body);
  font-weight: 500;
  border-bottom: 1px solid #F1F5F9;
}
.mobile-panel a.active { color: var(--primary); font-weight: 600; }
.mobile-panel .mobile-search {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-light);
  border-radius: 9999px;
  padding: 0.55rem 1rem;
  margin: 0.75rem 0;
}
.mobile-panel .mobile-search input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  margin-left: 0.5rem;
}
.mobile-panel .mobile-btn {
  display: block;
  text-align: center;
  padding: 0.7rem 0;
  margin-top: 0.75rem;
}

/* ===== Hero Banner ===== */
.page-banner {
  position: relative;
  min-height: 54vh;
  display: flex;
  align-items: center;
  background: var(--dark);
  overflow: hidden;
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.45;
}
.page-banner-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,18,32,0.88) 0%, rgba(11,18,32,0.72) 45%, rgba(11,18,32,0.55) 100%);
}
.page-banner-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.page-banner-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,0.18) 0%, transparent 70%);
  top: -100px;
  right: -80px;
  pointer-events: none;
}
.banner-content {
  position: relative;
  z-index: 2;
  padding: 4.5rem 0;
  color: #fff;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 1.4rem;
}
.breadcrumb a { color: rgba(255,255,255,0.75); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--electric); }
.breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.4); }
.banner-title {
  font-size: 2.9rem;
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1.2rem;
  letter-spacing: 0.5px;
}
.banner-title .gradient-text {
  background: linear-gradient(135deg, var(--electric), var(--energy));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.banner-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 2rem;
}
.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.btn-glow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-glow:hover {
  box-shadow: var(--shadow-glow-lg);
  transform: translateY(-2px);
  filter: brightness(1.05);
}
.btn-glow:active { transform: scale(0.97); }
.btn-glass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.22);
  color: #fff;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  cursor: pointer;
}
.btn-glass:hover {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-2px);
}
.btn-glass:active { transform: scale(0.97); }
.banner-stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.banner-stat {
  display: flex;
  flex-direction: column;
}
.banner-stat .num {
  font-size: 1.9rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, var(--electric));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.banner-stat .label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 0.25rem;
}

/* ===== Section 通用 ===== */
.section {
  padding: 5.5rem 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(0,229,255,0.1));
  color: var(--primary);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 9999px;
  padding: 0.35rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}
.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-body);
  line-height: 1.25;
  margin-bottom: 1rem;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ===== 核心供应优势 ===== */
.advantage-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}
.advantage-left {
  position: sticky;
  top: 100px;
}
.advantage-title {
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-body);
  margin-bottom: 1.2rem;
}
.advantage-title .accent {
  color: var(--primary);
}
.advantage-desc {
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 1.8rem;
}
.advantage-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.advantage-card {
  background: linear-gradient(135deg, rgba(37,99,235,0.05), rgba(0,229,255,0.03));
  border: 1px solid rgba(37,99,235,0.12);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.3rem;
  transition: all 0.3s ease;
}
.advantage-card:hover {
  border-color: rgba(37,99,235,0.35);
  box-shadow: 0 12px 32px rgba(37,99,235,0.08);
  transform: translateY(-4px);
}
.advantage-card .icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}
.advantage-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  color: var(--text-body);
}
.advantage-card p {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* ===== 产品系列 ===== */
.product-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}
.product-row:last-child { margin-bottom: 0; }
.product-row.reverse .product-image { order: 2; }
.product-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(15,23,42,0.14);
}
.product-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-image:hover img { transform: scale(1.03); }
.product-image .img-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  padding: 0.3rem 1rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-body);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.product-info .badge {
  display: inline-block;
  background: rgba(139,92,246,0.1);
  color: var(--energy);
  border: 1px solid rgba(139,92,246,0.25);
  border-radius: 9999px;
  padding: 0.3rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.product-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-body);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.product-info p {
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 1.4rem;
}
.product-points {
  list-style: none;
  margin: 0;
  padding: 0;
}
.product-points li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.55rem 0;
  font-size: 0.95rem;
  color: var(--text-body);
}
.product-points li i {
  color: #10B981;
  margin-top: 0.3rem;
  font-size: 0.85rem;
}
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 1rem;
  transition: gap 0.2s;
}
.product-link:hover { gap: 0.6rem; }

/* ===== 数据指标 ===== */
.stats-section {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.stats-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}
.stats-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,18,32,0.92), rgba(11,18,32,0.95));
}
.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.stats-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}
.stats-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
}
.stats-card .num {
  font-size: 2.6rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--electric), var(--energy));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stats-card .unit {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.7);
  margin-left: 0.25rem;
}
.stats-card .name {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  margin-top: 0.5rem;
}
.stats-card .desc {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-top: 0.2rem;
}

/* ===== 适用场景 ===== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.scene-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem 1.6rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.scene-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--electric));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.scene-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 44px rgba(15,23,42,0.1);
  border-color: rgba(37,99,235,0.25);
}
.scene-card:hover::before { transform: scaleX(1); }
.scene-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(0,229,255,0.08));
  color: var(--primary);
}
.scene-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-body);
  margin-bottom: 0.5rem;
}
.scene-card p {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 1rem;
}
.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.scene-tags span {
  font-size: 0.75rem;
  padding: 0.25rem 0.7rem;
  background: #F1F5F9;
  border-radius: 9999px;
  color: var(--text-sub);
  font-weight: 500;
}

/* ===== 选型流程 ===== */
.process-section {
  background: linear-gradient(180deg, #F8FAFC, #fff);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.2rem;
  position: relative;
}
.process-step {
  text-align: center;
  padding: 2rem 1.2rem;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
}
.process-step:hover {
  border-color: rgba(37,99,235,0.3);
  box-shadow: 0 14px 36px rgba(37,99,235,0.08);
  transform: translateY(-5px);
}
.process-step .step-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 6px 18px rgba(37,99,235,0.3);
}
.process-step h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-body);
  margin-bottom: 0.5rem;
}
.process-step p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.6;
}
.process-arrow {
  position: absolute;
  top: 50%;
  right: -0.85rem;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 0.8rem;
  z-index: 2;
  background: #fff;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* ===== FAQ ===== */
.faq-section {
  background: #F8FAFC;
}
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(37,99,235,0.25);
  box-shadow: 0 10px 28px rgba(15,23,42,0.05);
}
.faq-item.active {
  border-color: rgba(37,99,235,0.35);
  box-shadow: 0 14px 36px rgba(37,99,235,0.08);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-body);
}
.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #F1F5F9;
  color: var(--primary);
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s, color 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.active .faq-a {
  max-height: 400px;
}
.faq-a-inner {
  padding: 0 1.5rem 1.4rem;
  color: var(--text-sub);
  font-size: 0.93rem;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.cta-glow-1 {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,0.16) 0%, transparent 70%);
  top: -200px;
  left: -100px;
  pointer-events: none;
}
.cta-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.16) 0%, transparent 70%);
  bottom: -100px;
  right: -80px;
  pointer-events: none;
}
.cta-grid {
  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: 24px 24px;
  position: relative;
  z-index: 2;
}
.cta-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 3rem 0 1rem;
}
.cta-title {
  font-size: 2.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  line-height: 1.3;
}
.cta-title .gradient-text {
  background: linear-gradient(135deg, var(--electric), var(--energy));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-desc {
  color: rgba(255,255,255,0.65);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2.2rem;
}
.cta-form {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-xl);
  padding: 2.2rem;
  backdrop-filter: blur(12px);
  text-align: left;
}
.cta-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.cta-form input,
.cta-form textarea {
  width: 100%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 12px;
  padding: 0.85rem 1.1rem;
  color: #fff;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.cta-form input::placeholder,
.cta-form textarea::placeholder { color: rgba(255,255,255,0.45); }
.cta-form input:focus,
.cta-form textarea:focus {
  border-color: var(--electric);
  box-shadow: 0 0 0 4px rgba(0,229,255,0.15);
}
.cta-form textarea {
  min-height: 110px;
  resize: vertical;
  margin-bottom: 1.2rem;
}
.cta-form .btn-glow {
  width: 100%;
  font-size: 1rem;
  padding: 1rem 2rem;
}
.cta-note {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-top: 1rem;
}

/* ===== Footer ===== */
.site-footer {
  background: #0A0F1E;
  color: rgba(255,255,255,0.7);
  padding-top: 4rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 3rem;
  padding-bottom: 3rem;
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}
.footer-brand .footer-logo i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}
.footer-col a,
.footer-col span {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  padding: 0.35rem 0;
  transition: color 0.2s, padding-left 0.2s;
}
.footer-col a {
  cursor: pointer;
}
.footer-col a:hover {
  color: var(--electric);
  padding-left: 0.3rem;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.3rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ===== 浮动 CTA ===== */
.float-cta {
  position: fixed;
  right: 1.5rem;
  bottom: 1.8rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1.8rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--primary), var(--electric));
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 0 32px rgba(0,229,255,0.4);
  transition: all 0.3s ease;
  text-decoration: none;
}
.float-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 44px rgba(0,229,255,0.55);
}
.float-cta:active { transform: scale(0.96); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .main-nav { gap: 1.2rem; }
  .header-search { width: 150px; }
  .advantage-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .advantage-left { position: static; }
  .product-row { grid-template-columns: 1fr; gap: 2rem; }
  .product-row.reverse .product-image { order: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .process-arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  .hidden-mobile { display: none !important; }
  .mobile-toggle { display: flex; }
  .site-header .main-nav,
  .site-header .header-tools { display: none; }
  .banner-title { font-size: 2.1rem; }
  .banner-desc { font-size: 0.98rem; }
  .section { padding: 3.5rem 0; }
  .section-title { font-size: 1.8rem; }
  .advantage-list { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; }
  .cta-form-row { grid-template-columns: 1fr; }
  .cta-form { padding: 1.5rem; }
  .float-cta {
    width: 52px;
    height: 52px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }
  .float-cta span { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 520px) {
  .header-inner { height: 64px; }
  .brand-logo { font-size: 1.1rem; }
  .banner-title { font-size: 1.75rem; }
  .banner-actions { flex-direction: column; width: 100%; }
  .banner-actions .btn-glow,
  .banner-actions .btn-glass { width: 100%; }
  .banner-stat-row { gap: 1.4rem; }
  .banner-stat .num { font-size: 1.5rem; }
  .process-steps { grid-template-columns: 1fr; }
  .cta-title { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}

/* roulang page: article */
:root {
  --color-primary: #2563EB;
  --color-cyan: #00E5FF;
  --color-purple: #8B5CF6;
  --color-dark: #0B1220;
  --color-dark-2: #111C30;
  --color-bg-light: #F8FAFC;
  --color-text: #0F172A;
  --color-text-sub: #64748B;
  --color-border: #E2E8F0;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(2, 12, 27, 0.08);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--color-bg-light);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}
ul, ol {
  list-style-position: inside;
}
button, input, textarea {
  font-family: inherit;
}
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 16px rgba(2, 12, 27, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  border-radius: 10px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  padding: 8px 16px;
  color: #334155;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}
.nav-link:hover {
  color: var(--color-primary);
  background: #EFF6FF;
}
.nav-link.active {
  color: var(--color-primary);
  background: #EFF6FF;
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-form {
  display: flex;
  align-items: center;
  background: #F1F5F9;
  border-radius: 999px;
  padding: 0 16px;
  height: 40px;
  width: 190px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.search-form:focus-within {
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.search-form input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 14px;
  color: var(--color-text);
  min-width: 0;
}
.search-form input::placeholder {
  color: #94A3B8;
}
.search-icon {
  color: #94A3B8;
  margin-right: 8px;
  flex-shrink: 0;
}
.btn-header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  color: #fff;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
}
.btn-header-cta:hover {
  box-shadow: 0 6px 24px rgba(0, 229, 255, 0.35);
  transform: translateY(-1px);
  color: #fff;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  display: block;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== 文章 Hero ===== */
.article-hero {
  background-color: var(--color-dark);
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 80px 0 72px;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 18, 32, 0.94) 25%, rgba(11, 18, 32, 0.72) 100%);
  pointer-events: none;
}
.article-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 60%);
  pointer-events: none;
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  font-size: 13px;
  color: #94A3B8;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
.breadcrumb a {
  color: #94A3B8;
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--color-cyan);
}
.breadcrumb .divider {
  margin: 0 8px;
  color: #475569;
}
.breadcrumb-current {
  color: #CBD5E1;
}
.article-category-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--color-cyan);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}
.article-hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  max-width: 860px;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: #94A3B8;
  font-size: 14px;
}
.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-dot {
  width: 4px;
  height: 4px;
  background: #475569;
  border-radius: 50%;
}

/* ===== 正文阅读区 ===== */
.article-section {
  padding: 56px 0 72px;
  background: var(--color-bg-light);
}
.article-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 52px 56px;
  max-width: 920px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
}
.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: #334155;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.article-body > *:first-child {
  margin-top: 0 !important;
}
.article-body > *:last-child {
  margin-bottom: 0 !important;
}
.article-body p {
  margin: 1.3em 0;
}
.article-body h2 {
  font-size: 1.6rem;
  color: var(--color-text);
  margin: 1.8em 0 0.7em;
  font-weight: 700;
  line-height: 1.3;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);
}
.article-body h3 {
  font-size: 1.3rem;
  color: var(--color-text);
  margin: 1.5em 0 0.6em;
  font-weight: 600;
  line-height: 1.35;
}
.article-body h4 {
  font-size: 1.08rem;
  color: var(--color-text);
  margin: 1.3em 0 0.5em;
  font-weight: 600;
}
.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(37, 99, 235, 0.35);
}
.article-body a:hover {
  color: var(--color-cyan);
}
.article-body ul,
.article-body ol {
  padding-left: 1.5em;
  margin: 1.2em 0;
}
.article-body ul {
  list-style: disc;
}
.article-body ol {
  list-style: decimal;
}
.article-body li {
  margin-bottom: 0.4em;
  line-height: 1.7;
}
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: #F1F5F9;
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  color: #475569;
  margin: 1.5em 0;
}
.article-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #F1F5F9;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
  color: #0F172A;
}
.article-body pre {
  background: var(--color-dark);
  color: #E2E8F0;
  padding: 22px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 1.5em 0;
  line-height: 1.6;
  font-size: 14px;
}
.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-body img,
.article-body figure {
  border-radius: 12px;
  margin: 1.6em 0;
}
.article-body figcaption {
  font-size: 13px;
  color: var(--color-text-sub);
  text-align: center;
  margin-top: 8px;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
}
.article-body th,
.article-body td {
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
.article-body th {
  background: #F8FAFC;
  font-weight: 600;
  color: var(--color-text);
}
.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

/* 未找到 */
.not-found-box {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 80px 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}
.not-found-box .nf-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #F1F5F9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
}
.not-found-box h2 {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 12px;
}
.not-found-box p {
  color: var(--color-text-sub);
  margin-bottom: 28px;
  font-size: 15px;
}

/* ===== 上一篇 / 下一篇 ===== */
.post-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 920px;
  margin: 40px auto 0;
}
.pager-link {
  flex: 1;
  padding: 18px 22px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.25s ease;
  box-shadow: 0 2px 10px rgba(2, 12, 27, 0.03);
}
.pager-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.pager-label {
  font-size: 12px;
  color: #94A3B8;
  display: flex;
  align-items: center;
  gap: 6px;
}
.pager-text {
  color: var(--color-text);
  font-weight: 600;
  font-size: 15px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 64px 0 72px;
  background: #fff;
  border-top: 1px solid var(--color-border);
}
.related-header {
  text-align: center;
  margin-bottom: 36px;
}
.related-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.related-header p {
  color: var(--color-text-sub);
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 920px;
  margin: 0 auto;
}
.related-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(2, 12, 27, 0.1);
  border-color: rgba(37, 99, 235, 0.25);
}
.related-card .card-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}
.related-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .card-thumb img {
  transform: scale(1.05);
}
.related-card-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.related-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
  font-weight: 500;
}
.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color 0.2s;
}
.related-card:hover .related-card-body h3 {
  color: var(--color-primary);
}
.related-card-body .rc-meta {
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  color: #94A3B8;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ===== CTA 区块 ===== */
.cta-section {
  position: relative;
  padding: 72px 0 80px;
  background: var(--color-dark);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.16), transparent 60%);
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: 10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.18), transparent 60%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.cta-inner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
}
.cta-inner p {
  color: #94A3B8;
  font-size: 16px;
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  color: #fff;
  border: none;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
  transition: all 0.25s ease;
  min-height: 48px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35);
  color: #fff;
}
.btn-primary:active {
  transform: scale(0.98);
  box-shadow: 0 2px 14px rgba(37, 99, 235, 0.25);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  min-height: 48px;
  backdrop-filter: blur(10px);
  transition: all 0.25s ease;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
  color: #fff;
}
.btn-ghost:active {
  transform: scale(0.98);
}

/* ===== Footer ===== */
.site-footer {
  background: #0A0F1E;
  color: #94A3B8;
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-logo {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.footer-logo:hover {
  color: var(--color-cyan);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 14px;
  color: #64748B;
  max-width: 360px;
}
.footer-col h4 {
  color: #E2E8F0;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-col a,
.footer-col span {
  display: block;
  padding: 4px 0;
  color: #64748B;
  font-size: 14px;
  line-height: 1.7;
}
.footer-col a:hover {
  color: var(--color-cyan);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #475569;
}

/* ===== 浮动 CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  color: #fff;
  padding: 15px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.35);
  transition: all 0.3s ease;
}
.float-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(0, 229, 255, 0.45);
  color: #fff;
}
.float-cta:active {
  transform: scale(0.97);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    min-height: 72px;
    padding: 12px 0;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav,
  .header-actions {
    display: none;
  }
  .site-header.nav-open .main-nav,
  .site-header.nav-open .header-actions {
    display: flex;
    flex-direction: column;
    flex-basis: 100%;
    width: 100%;
    gap: 8px;
    padding: 8px 0 14px;
  }
  .site-header.nav-open .header-actions {
    flex-direction: row;
    align-items: center;
    padding-top: 4px;
  }
  .main-nav .nav-link {
    padding: 12px 0;
    border-bottom: 1px solid #F1F5F9;
    border-radius: 0;
    font-size: 15px;
  }
  .search-form {
    width: 180px;
    flex-shrink: 1;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .article-hero {
    padding: 56px 0 48px;
  }
  .article-hero h1 {
    font-size: 2rem;
  }
  .article-card {
    padding: 32px 24px;
  }
  .article-body {
    font-size: 15px;
    line-height: 1.75;
  }
  .article-body h2 {
    font-size: 1.4rem;
  }
  .article-body h3 {
    font-size: 1.2rem;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .cta-inner h2 {
    font-size: 1.7rem;
  }
  .float-cta {
    width: 56px;
    height: 56px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
    right: 16px;
    bottom: 16px;
  }
  .float-cta span {
    display: none;
  }
  .post-pager {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo-text {
    font-size: 17px;
  }
  .header-actions {
    flex-wrap: wrap;
  }
  .search-form {
    width: 100%;
    flex: 1;
  }
  .article-hero h1 {
    font-size: 1.65rem;
  }
  .article-card {
    padding: 24px 18px;
    border-radius: 12px;
  }
  .article-body {
    font-size: 14.5px;
  }
  .article-body table {
    font-size: 13px;
  }
  .article-body th,
  .article-body td {
    padding: 8px 10px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cta-inner h2 {
    font-size: 1.5rem;
  }
  .cta-buttons .btn-primary,
  .cta-buttons .btn-ghost {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* roulang page: category2 */
:root{
  --primary:#2563EB;
  --accent-cyan:#00E5FF;
  --accent-purple:#8B5CF6;
  --dark:#0B1220;
  --dark-secondary:#111C30;
  --glass:rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.12);
  --glass-border-hover:rgba(255,255,255,0.28);
  --text-light:#CBD5E1;
  --text-dark:#0F172A;
  --muted:#64748B;
  --border:#E2E8F0;
  --radius-lg:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:#0B1220;color:#CBD5E1;line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.93);backdrop-filter:blur(14px);border-bottom:1px solid rgba(226,232,240,.8);box-shadow:0 2px 20px rgba(15,23,42,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo-link{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2563EB,#00E5FF);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.35)}
.logo-text{font-size:1.25rem;font-weight:800;color:#0F172A;letter-spacing:.5px}
.main-nav{display:flex;gap:28px;align-items:center}
.nav-link{font-size:0.9375rem;font-weight:500;color:#334155;padding:8px 2px;position:relative;transition:color .3s;white-space:nowrap}
.nav-link:hover{color:#2563EB}
.nav-link.active{color:#2563EB;font-weight:600}
.nav-link.active::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,#2563EB,#00E5FF)}
.header-actions{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;background:#F1F5F9;border:1px solid #E2E8F0;border-radius:999px;padding:8px 16px;width:190px;transition:all .3s}
.search-box:focus-within{border-color:#2563EB;box-shadow:0 0 0 4px rgba(37,99,235,.1)}
.search-box i{color:#64748B;font-size:.8125rem}
.search-box input{border:none;outline:none;background:transparent;font-size:.875rem;margin-left:8px;color:#0F172A;width:100%}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:110}
.hamburger span{width:24px;height:2px;border-radius:2px;background:#0F172A;display:block;transition:all .3s}
.mobile-menu{display:none;background:#fff;border-top:1px solid #E2E8F0;padding:16px 24px 24px;flex-direction:column;gap:4px}
.mobile-menu .mobile-search{display:flex;align-items:center;background:#F1F5F9;border:1px solid #E2E8F0;border-radius:999px;padding:10px 16px;margin-bottom:14px}
.mobile-menu .mobile-search i{color:#64748B;font-size:.875rem}
.mobile-menu .mobile-search input{border:none;outline:none;background:transparent;margin-left:8px;font-size:.875rem;color:#0F172A;width:100%}
.mobile-menu a{font-size:.9375rem;color:#334155;padding:12px 4px;border-bottom:1px solid #F1F5F9;transition:color .3s}
.mobile-menu a:hover,.mobile-menu a.active{color:#2563EB}
.mobile-menu .btn-primary{margin-top:16px;text-align:center;border-bottom:none}
.site-header.mobile-open .mobile-menu{display:flex}

.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#2563EB,#00E5FF);color:#fff;border:none;border-radius:999px;font-size:.9375rem;font-weight:600;padding:14px 30px;cursor:pointer;transition:all .3s;box-shadow:0 4px 18px rgba(37,99,235,.35);text-align:center}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(0,229,255,.45);filter:brightness(1.05)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:999px;font-size:.9375rem;font-weight:600;padding:14px 30px;cursor:pointer;transition:all .3s}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-2px)}

.page-banner{position:relative;min-height:440px;display:flex;align-items:center;justify-content:center;text-align:center;padding:96px 0 64px;background:linear-gradient(rgba(11,18,32,.85),rgba(11,18,32,.72)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat}
.page-banner::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:8px 18px;margin-bottom:24px;font-size:.875rem;color:#94A3B8}
.breadcrumb i{font-size:.6875rem;color:#64748B}
.breadcrumb a{color:#E2E8F0;transition:color .3s}
.breadcrumb a:hover{color:#00E5FF}
.page-banner h1{font-size:clamp(2.2rem,4vw,3.25rem);font-weight:800;line-height:1.15;color:#fff;letter-spacing:.5px;margin-bottom:20px}
.page-banner h1 .highlight{background:linear-gradient(120deg,#00E5FF,#8B5CF6);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-banner .banner-desc{max-width:720px;margin:0 auto 32px;font-size:1.0625rem;color:#CBD5E1;line-height:1.8}
.banner-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

.section-tag{display:inline-block;background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.3);color:#00E5FF;border-radius:999px;padding:6px 16px;font-size:.8125rem;font-weight:500;margin-bottom:16px;letter-spacing:1px}
.section-title{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;line-height:1.2;color:#fff;margin-bottom:16px}
.section-desc{max-width:720px;font-size:1rem;color:#94A3B8;line-height:1.8;margin-bottom:48px}

.industry-card{position:relative;overflow:hidden;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:28px 24px;backdrop-filter:blur(12px);transition:all .3s}
.industry-card::after{content:'';position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(0,229,255,.12),transparent 70%);opacity:0;transition:opacity .4s}
.industry-card:hover::after{opacity:1}
.industry-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.1);box-shadow:0 16px 40px rgba(0,0,0,.35)}
.industry-card .icon-box{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(0,229,255,.1);color:#00E5FF;border:1px solid rgba(0,229,255,.2);margin-bottom:20px;font-size:1.25rem}
.industry-card h3{font-size:1.1rem;font-weight:600;color:#E2E8F0;margin-bottom:12px}
.industry-card p{font-size:.9rem;color:#94A3B8;line-height:1.7}
.industry-card .card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:.875rem;color:#00E5FF;font-weight:500;transition:gap .3s}
.industry-card .card-link:hover{gap:10px}

.solution-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.solution-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.solution-content h3{font-size:1.5rem;font-weight:700;color:#fff;margin-bottom:16px}
.solution-content p{font-size:.95rem;color:#94A3B8;line-height:1.8;margin-bottom:20px}
.solution-list{list-style:none;margin-bottom:24px}
.solution-list li{display:flex;align-items:flex-start;gap:10px;font-size:.925rem;color:#CBD5E1;margin-bottom:12px}
.solution-list li i{flex-shrink:0;font-size:.875rem;color:#00E5FF;margin-top:5px}
.solution-table{width:100%;border-collapse:collapse;font-size:.875rem;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:12px;overflow:hidden}
.solution-table td{padding:12px 16px;color:#CBD5E1;border-bottom:1px solid rgba(255,255,255,.06)}
.solution-table td:first-child{color:#64748B;font-weight:500;width:35%}
.solution-table tr:last-child td{border-bottom:none}

.process-step{position:relative;padding:32px 24px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:16px;transition:all .3s}
.process-step:hover{background:rgba(255,255,255,.08);border-color:rgba(0,229,255,.3);transform:translateY(-3px)}
.step-num{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.125rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#2563EB,#00E5FF);margin-bottom:20px;box-shadow:0 4px 16px rgba(37,99,235,.35)}
.process-step h3{font-size:1.0625rem;font-weight:600;color:#fff;margin-bottom:10px}
.process-step p{font-size:.875rem;color:#94A3B8;line-height:1.7}

.metric-card{text-align:center;padding:36px 20px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:16px;transition:all .3s}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.4);box-shadow:0 0 30px rgba(139,92,246,.15)}
.metric-number{font-size:2.5rem;font-weight:800;line-height:1.2;background:linear-gradient(135deg,#00E5FF,#8B5CF6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}
.metric-label{font-size:.9375rem;color:#94A3B8}

.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:16px;margin-bottom:16px;backdrop-filter:blur(12px);transition:border-color .3s}
.faq-item.open{border-color:rgba(0,229,255,.4)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:1rem;font-weight:600;color:#F1F5F9;user-select:none}
.faq-icon{width:28px;height:28px;flex-shrink:0;position:relative;transition:transform .3s}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:#00E5FF;border-radius:2px;transition:all .3s}
.faq-icon::before{left:50%;top:4px;width:2px;height:20px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:4px;width:20px;height:2px;transform:translateY(-50%)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.open .faq-answer{max-height:300px;padding-bottom:20px}
.faq-answer p{font-size:.925rem;color:#94A3B8;line-height:1.8}

.cta-section{position:relative;padding:96px 0;text-align:center;overflow:hidden}
.cta-glow{position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(37,99,235,.18),transparent 60%),radial-gradient(ellipse at 20% 80%,rgba(139,92,246,.12),transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(0,229,255,.12),transparent 50%);pointer-events:none}
.cta-section h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;color:#fff;margin-bottom:16px}
.cta-section .cta-desc{max-width:640px;margin:0 auto 40px;color:#94A3B8;font-size:1rem}
.cta-form{max-width:600px;margin:0 auto;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:36px;backdrop-filter:blur(16px);text-align:left}
.cta-form input,.cta-form textarea{width:100%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:10px;padding:14px 16px;color:#F1F5F9;font-size:.9375rem;margin-bottom:16px;outline:none;transition:all .3s}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:#64748B}
.cta-form input:focus,.cta-form textarea:focus{border-color:#00E5FF;box-shadow:0 0 0 4px rgba(0,229,255,.15)}
.cta-form textarea{min-height:120px;resize:vertical}
.cta-form .btn-primary{width:100%}

.site-footer{background:#0A0F1E;border-top:1px solid rgba(255,255,255,.08);padding:72px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px;margin-bottom:48px}
.footer-brand .footer-logo{font-size:1.25rem;font-weight:800;color:#fff;display:inline-block;margin-bottom:16px;letter-spacing:.5px}
.footer-brand p{font-size:.9rem;color:#94A3B8;line-height:1.8;max-width:320px}
.footer-col h4{font-size:.9375rem;font-weight:600;color:#E2E8F0;margin-bottom:20px}
.footer-col a,.footer-col span{display:block;font-size:.875rem;color:#64748B;margin-bottom:12px;transition:color .3s}
.footer-col a:hover{color:#00E5FF}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;text-align:center;color:#64748B;font-size:.875rem}

@media (max-width:1024px){
  .header-actions{display:none}
  .main-nav{display:none}
  .hamburger{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .page-banner{min-height:420px;padding:72px 0 48px}
  .page-banner .banner-desc{font-size:1rem}
  .solution-media img{aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-form{padding:28px 20px}
  .cta-form .grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .section-title{font-size:1.5rem}
  .banner-btns{flex-direction:column;width:100%}
  .banner-btns .btn-primary,.banner-btns .btn-ghost{width:100%}
  .metric-number{font-size:2rem}
}