/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #0B1B2B;
  --primary-light: #11263C;
  --accent: #00E5A0;
  --accent-2: #3772FF;
  --bg-body: #081220;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-footer: #06101C;
  --text-title: #EAF2FF;
  --text-body: #A0B2C8;
  --text-weak: #5F7390;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 160, 0.35);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
  --transition: 0.3s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-w: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  background-image: radial-gradient(ellipse at 0% 0%, #0E1F33 0%, transparent 60%), radial-gradient(ellipse at 100% 100%, #0A1A26 0%, transparent 50%);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
}

button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ============ 布局容器 ============ */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: 72px;
  background: rgba(8, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}

.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 160, 0.6) 30%, rgba(55, 114, 255, 0.6) 70%, transparent);
}

.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-dot {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(0, 229, 160, 0.7);
  animation: pulse-dot 2.4s ease-in-out infinite;
}

.brand-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: flex-end;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 999px;
  transition: all 0.25s ease;
  position: relative;
  line-height: 1.4;
}

.nav-menu a:hover {
  color: var(--text-title);
  background: rgba(255, 255, 255, 0.04);
}

.nav-menu a.active {
  color: var(--accent);
  background: rgba(0, 229, 160, 0.08);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 2px;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #06201A;
  background: linear-gradient(135deg, var(--accent), #00C98B);
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.3), 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: all 0.3s ease;
  white-space: nowrap;
  margin-left: 6px;
  line-height: 1.4;
}

.nav-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px rgba(0, 229, 160, 0.45), 0 6px 16px rgba(0, 0, 0, 0.3);
  color: #06201A;
}

.nav-cta:active {
  transform: scale(0.97);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
}

.nav-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.active .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

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

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 18, 32, 0.35) 0%, rgba(8, 18, 32, 0.82) 70%, var(--bg-body) 100%);
}

.hero-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(0, 229, 160, 0.12);
  filter: blur(100px);
  z-index: 1;
  pointer-events: none;
}

.hero-glow.g1 {
  top: 10%;
  left: -5%;
}

.hero-glow.g2 {
  bottom: 20%;
  right: 5%;
  background: rgba(55, 114, 255, 0.1);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 160, 0.4);
  background: rgba(0, 229, 160, 0.08);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 28px;
  backdrop-filter: blur(4px);
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
  font-size: clamp(28px, 4.6vw, 52px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--text-title);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero h1 .gradient-text {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 600px;
  margin: 0 auto 36px;
  text-align: center;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 60px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 34px;
  font-size: 15px;
  font-weight: 600;
  color: #06201A;
  background: linear-gradient(135deg, var(--accent), #00C98B);
  border-radius: 999px;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.35), 0 4px 16px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  cursor: pointer;
  line-height: 1.5;
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0, 229, 160, 0.5), 0 6px 20px rgba(0, 0, 0, 0.35);
  color: #06201A;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-title);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  transition: all 0.3s ease;
  cursor: pointer;
  line-height: 1.5;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
}

.btn-ghost:active {
  transform: scale(0.97);
}

.hero-trust {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: center;
  padding-top: 4px;
}

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

.trust-num {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.trust-label {
  font-size: 13px;
  color: var(--text-weak);
}

.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-weak);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-hint .line {
  width: 1px;
  height: 32px;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

/* ============ Section 通用 ============ */
.section {
  padding: 100px 0;
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 229, 160, 0.1);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.35;
  margin-bottom: 10px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.section-head p {
  font-size: 15px;
  color: var(--text-body);
  max-width: 560px;
  margin: 0 auto;
}

/* ============ 平台价值 ============ */
.features-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}

.feature-card.feature-main {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(17, 38, 60, 0.9), rgba(8, 18, 32, 0.9));
  border-color: rgba(55, 114, 255, 0.25);
}

.feature-card.feature-main::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 160, 0.12);
  border: 1px solid rgba(0, 229, 160, 0.25);
  color: var(--accent);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.feature-card .feature-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 229, 160, 0.12);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 12px;
  line-height: 1.4;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 18px;
}

.feature-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

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

.feature-link .arrow {
  font-size: 16px;
  line-height: 1;
}

/* ============ 预览区 ============ */
.demo-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.demo-browser {
  max-width: 920px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0E1F33;
  border: 1px solid var(--border-color);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.demo-browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(8, 18, 32, 0.95);
  border-bottom: 1px solid var(--border-color);
}

.demo-browser-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.demo-browser-dot:first-child {
  background: rgba(255, 99, 99, 0.5);
}

.demo-browser-dot:nth-child(2) {
  background: rgba(255, 213, 79, 0.5);
}

.demo-browser-dot:nth-child(3) {
  background: rgba(0, 229, 160, 0.5);
}

.demo-browser-url {
  flex: 1;
  margin-left: 12px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-weak);
  text-align: center;
}

.demo-browser-body {
  padding: 0;
}

.demo-browser-body img {
  width: 100%;
  height: auto;
  display: block;
}

.demo-tags {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 36px;
}

.demo-tag {
  display: inline-block;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.25);
  border-radius: 999px;
  letter-spacing: 0.5px;
}

/* ============ 资讯列表 ============ */
.news-section {
  background: rgba(255, 255, 255, 0.01);
}

.news-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.news-card {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all 0.3s ease;
  overflow: hidden;
}

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

.news-thumb {
  flex-shrink: 0;
  width: 120px;
  height: 84px;
  border-radius: 8px;
  overflow: hidden;
  background: #11263C;
}

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

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

.news-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.news-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 229, 160, 0.15);
  padding: 3px 10px;
  border-radius: 999px;
}

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

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.5;
  margin-bottom: 2px;
}

.news-body h3 a {
  color: inherit;
  transition: color 0.25s ease;
}

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

.news-summary {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}

.news-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

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

.news-empty {
  max-width: 840px;
  margin: 0 auto;
  padding: 64px 24px;
  text-align: center;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}

.news-empty .empty-icon {
  font-size: 36px;
  margin-bottom: 12px;
  line-height: 1;
}

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

/* ============ 服务方案 ============ */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 24px;
  align-items: stretch;
  max-width: 960px;
  margin: 0 auto;
}

.pricing-plan {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.pricing-plan .plan-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 6px;
}

.pricing-plan .plan-desc {
  font-size: 14px;
  color: var(--text-body);
  margin-bottom: 24px;
  line-height: 1.6;
}

.pricing-plan .plan-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  flex: 1;
}

.pricing-plan .plan-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

.pricing-plan .plan-list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1.4;
}

.pricing-featured {
  position: relative;
  background: linear-gradient(145deg, rgba(17, 38, 60, 0.95), rgba(8, 18, 32, 0.95));
  border-color: rgba(0, 229, 160, 0.4);
  box-shadow: 0 0 32px rgba(0, 229, 160, 0.12), var(--shadow-card);
}

.pricing-featured::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.featured-badge {
  position: absolute;
  top: -12px;
  right: 22px;
  background: linear-gradient(135deg, var(--accent), #00C98B);
  color: #06201A;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 16px;
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(0, 229, 160, 0.35);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ============ FAQ ============ */
.faq-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--primary-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(0, 229, 160, 0.25);
}

.faq-item.active {
  border-color: rgba(0, 229, 160, 0.35);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  cursor: pointer;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  transition: color 0.25s ease;
  line-height: 1.6;
}

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

.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 160, 0.12);
  border: 1px solid rgba(0, 229, 160, 0.25);
  color: var(--accent);
  font-size: 16px;
  font-weight: 300;
  transition: transform 0.3s ease;
  line-height: 1;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-body);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
  margin-left: 62px;
}

/* ============ 最终 CTA ============ */
.final-cta {
  padding: 120px 24px;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 160, 0.5), transparent);
}

.final-cta-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(0, 229, 160, 0.08), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.final-cta h2 {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

.final-cta p {
  font-size: 15px;
  color: var(--text-body);
  max-width: 520px;
  margin: 0 auto 36px;
  position: relative;
  z-index: 1;
}

.final-cta .hero-ctas {
  margin-bottom: 0;
  position: relative;
  z-index: 1;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1fr;
  gap: 48px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 14px;
}

.footer-brand .brand-text {
  font-size: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  max-width: 280px;
  margin-top: 14px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--text-body);
  transition: color 0.25s ease, padding-left 0.25s ease;
  display: inline-block;
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-contact .contact-note {
  font-size: 13px;
  color: var(--text-weak);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-weak);
  max-width: var(--container-w);
  margin: 0 auto;
}

/* ============ 浮动 CTA ============ */
.float-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 300;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #00C98B);
  color: #06201A;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: float-pulse 2.4s ease-in-out infinite;
}

.float-cta:hover {
  transform: scale(1.06);
  box-shadow: 0 0 40px rgba(0, 229, 160, 0.6);
  color: #06201A;
}

.float-cta:active {
  transform: scale(0.95);
}

.float-cta .float-icon {
  font-size: 20px;
  line-height: 1;
}

/* ============ 动画 ============ */
@keyframes pulse-dot {
  0%, 100% {
    box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 20px rgba(0, 229, 160, 0.9);
    transform: scale(1.15);
  }
}

@keyframes scroll-line {
  0% {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: scaleY(1);
    transform-origin: bottom;
  }
}

@keyframes float-pulse {
  0%, 100% {
    box-shadow: 0 0 24px rgba(0, 229, 160, 0.4), 0 0 0 0 rgba(0, 229, 160, 0.3);
  }
  50% {
    box-shadow: 0 0 32px rgba(0, 229, 160, 0.55), 0 0 0 12px rgba(0, 229, 160, 0);
  }
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 620px;
  }

  .pricing-featured {
    order: -1;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .header-inner {
    padding: 0 16px;
  }

  .brand-text {
    font-size: 15px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 18, 32, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px 24px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 2px;
  }

  .nav-menu a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-menu a.active::after {
    left: 0;
    transform: none;
    bottom: 50%;
    width: 3px;
    height: 20px;
    top: 50%;
    transform: translateY(-50%);
    border-radius: 0;
    box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
  }

  .nav-cta {
    margin-top: 12px;
    margin-left: 0;
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
  }

  .hero {
    padding: 100px 20px 70px;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

  .btn-primary, .btn-ghost {
    width: 100%;
  }

  .hero-trust {
    gap: 24px;
  }

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

  .feature-card.feature-main {
    grid-row: auto;
  }

  .news-card {
    flex-direction: column;
    padding: 18px;
  }

  .news-thumb {
    width: 100%;
    height: 160px;
  }

  .pricing-grid {
    max-width: 100%;
  }

  .pricing-plan {
    padding: 28px 24px;
  }

  .faq-answer-inner {
    margin-left: 0;
  }

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

  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
  }

  .final-cta {
    padding: 80px 20px;
  }
}

@media (max-width: 375px) {
  .brand-text {
    font-size: 14px;
  }

  .hero h1 {
    font-size: 26px;
  }

  .section-head h2 {
    font-size: 22px;
  }

  .nav-cta {
    padding: 10px 16px;
    font-size: 13px;
  }
}

/* ============ 打印/滚动条优化 ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
  background: #22354D;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 229, 160, 0.4);
}

/* roulang page: article */
:root {
  --color-primary: #0B1B2B;
  --color-primary-light: #11263C;
  --color-accent: #00E5A0;
  --color-accent-2: #3772FF;
  --color-bg: #081220;
  --color-bg-deep: #06101C;
  --color-card: rgba(255, 255, 255, 0.04);
  --color-card-border: rgba(255, 255, 255, 0.08);
  --color-title: #EAF2FF;
  --color-text: #A0B2C8;
  --color-muted: #5F7390;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
  --transition: 0.3s ease;
  --header-height: 72px;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(17, 38, 60, 0.55) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(0, 229, 160, 0.06) 0%, transparent 40%),
    var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

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

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

input,
textarea {
  font-family: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 229, 160, 0.35);
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.25);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  height: var(--header-height);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-title);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent), 0 0 24px rgba(0, 229, 160, 0.6);
  flex-shrink: 0;
  animation: pulse-dot 2.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    box-shadow: 0 0 8px var(--color-accent), 0 0 16px rgba(0, 229, 160, 0.4);
  }
  50% {
    box-shadow: 0 0 14px var(--color-accent), 0 0 30px rgba(0, 229, 160, 0.7);
  }
}

.brand-text {
  background: linear-gradient(135deg, #EAF2FF 30%, #89F7D8 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  padding: 6px 2px;
  position: relative;
  transition: color var(--transition);
  white-space: nowrap;
}

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

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

.nav-menu a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 229, 160, 0.8);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #081220;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.35), 0 4px 16px rgba(0, 0, 0, 0.3);
  transition: filter var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0, 229, 160, 0.5);
  transform: translateY(-1px);
}

.nav-cta:active {
  transform: scale(0.97);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  background: none;
  border: none;
}

.nav-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--color-title);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: filter var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition);
  gap: 8px;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #081220;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.35), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0, 229, 160, 0.5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-title);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 16px rgba(0, 229, 160, 0.15);
}

.btn-ghost:active {
  transform: scale(0.97);
}

.btn-block {
  width: 100%;
}

.article-main {
  padding-bottom: 0;
}

.article-hero {
  background:
    radial-gradient(ellipse at 70% 20%, rgba(0, 229, 160, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 80%, rgba(55, 114, 255, 0.1) 0%, transparent 40%),
    linear-gradient(180deg, rgba(11, 27, 43, 0.6) 0%, var(--color-bg) 100%);
  padding: 72px 0 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.article-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.12) 0%, transparent 70%);
  pointer-events: none;
  filter: blur(40px);
}

.article-hero .container {
  position: relative;
  z-index: 1;
  max-width: 960px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 28px;
}

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

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

.breadcrumb .sep {
  opacity: 0.6;
  color: var(--color-muted);
}

.breadcrumb .current {
  color: var(--color-text);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--color-title);
  line-height: 1.3;
  margin-bottom: 20px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
  word-break: break-word;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 16px;
}

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

.meta-item svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.8;
}

.article-cover-wrap {
  padding: 40px 0 8px;
}

.article-cover {
  max-width: 960px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card);
  position: relative;
}

.article-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(8, 18, 32, 0.4) 100%);
  pointer-events: none;
}

.article-cover img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.article-layout-wrap {
  padding: 56px 0 40px;
}

.article-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 48px;
  max-width: 1080px;
  margin: 0 auto;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-self: start;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.sidebar-card {
  background: var(--color-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.sidebar-card:hover {
  border-color: rgba(0, 229, 160, 0.3);
  box-shadow: var(--shadow-card-hover);
}

.sidebar-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}

.sidebar-card h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 40px;
  height: 2px;
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
}

.sidebar-meta {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-meta li {
  display: flex;
  flex-direction: column;
  font-size: 14px;
  color: var(--color-text);
}

.sidebar-meta li span {
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.side-note p {
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 12px;
}

.side-note a {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  transition: opacity var(--transition);
}

.side-note a:hover {
  opacity: 0.8;
}

.article-content-body {
  min-width: 0;
}

.article-content {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
  word-break: break-word;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
  color: var(--color-title);
  line-height: 1.4;
  margin-top: 40px;
  margin-bottom: 16px;
  font-weight: 700;
}

.article-content h1 {
  font-size: 26px;
}

.article-content h2 {
  font-size: 24px;
  border-left: 3px solid var(--color-accent);
  padding-left: 16px;
}

.article-content h3 {
  font-size: 20px;
}

.article-content h4 {
  font-size: 17px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content a {
  color: var(--color-accent);
  border-bottom: 1px solid rgba(0, 229, 160, 0.3);
  transition: border-color var(--transition);
}

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

.article-content ul,
.article-content ol {
  margin: 0 0 22px 22px;
  padding: 0;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content img {
  border-radius: var(--radius-sm);
  margin: 28px 0;
  box-shadow: var(--shadow-card);
}

.article-content blockquote {
  border-left: 3px solid var(--color-accent);
  background: rgba(0, 229, 160, 0.06);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
  color: #C8D6E8;
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.05);
}

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-content table th,
.article-content table td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 10px 14px;
  text-align: left;
}

.article-content table th {
  background: rgba(0, 229, 160, 0.08);
  color: var(--color-title);
  font-weight: 600;
}

.article-content code {
  background: rgba(255, 255, 255, 0.07);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 14px;
  color: #89F7D8;
}

.article-content pre {
  background: #0A1524;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 28px 0;
  box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.3);
}

.article-content pre code {
  background: transparent;
  padding: 0;
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.7;
}

.article-tags-section {
  padding: 40px 0 8px;
}

.article-tags-row {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.article-tags-label {
  font-size: 13px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-right: 4px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(0, 229, 160, 0.1);
  border: 1px solid rgba(0, 229, 160, 0.2);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.tag:hover {
  background: rgba(0, 229, 160, 0.18);
  border-color: rgba(0, 229, 160, 0.4);
  transform: translateY(-1px);
}

.article-empty {
  text-align: center;
  padding: 80px 0;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
}

.article-empty p {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 20px;
}

.article-empty .btn {
  font-size: 14px;
}

.article-pager-section {
  padding: 48px 0 8px;
}

.article-pager {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  padding: 12px 0;
  transition: color var(--transition), transform var(--transition);
}

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

.page-link.prev:hover {
  transform: translateX(-3px);
}

.page-link.next:hover {
  transform: translateX(3px);
}

.login-page-arrow {
  display: inline-block;
}

.related-section {
  padding: 72px 0 40px;
}

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

.section-head .badge {
  display: inline-block;
  background: rgba(0, 229, 160, 0.15);
  border: 1px solid rgba(0, 229, 160, 0.3);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  box-shadow: 0 0 16px rgba(0, 229, 160, 0.1);
}

.section-head h2 {
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 700;
  color: var(--color-title);
  line-height: 1.3;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.related-card {
  display: block;
  background: var(--color-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 229, 160, 0.3);
}

.related-card-img {
  height: 180px;
  overflow: hidden;
  position: relative;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.related-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 18, 32, 0.7) 100%);
}

.related-card-body {
  padding: 24px 24px 28px;
}

.related-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 8px;
  line-height: 1.4;
  transition: color var(--transition);
}

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

.related-card-body p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.footer-cta {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(0, 229, 160, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, transparent 0%, rgba(11, 27, 43, 0.5) 100%);
  padding: 96px 0 88px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.footer-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.5);
}

.footer-cta h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--color-title);
  margin-bottom: 16px;
  line-height: 1.3;
}

.footer-cta p {
  font-size: 16px;
  color: var(--color-text);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.site-footer {
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(0, 229, 160, 0.3);
  padding: 64px 0 0;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.5;
}

.footer-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand .brand {
  font-size: 17px;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 320px;
  margin-top: 12px;
}

.footer-col h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after,
.footer-contact h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col ul a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.contact-note {
  font-size: 13px;
  color: rgba(95, 115, 144, 0.8);
  border-left: 2px solid rgba(0, 229, 160, 0.3);
  padding-left: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-muted);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 229, 160, 0.35);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(0, 229, 160, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 229, 160, 0);
  }
}

@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
  }
  .nav-menu {
    gap: 16px;
  }
  .nav-menu a {
    font-size: 13px;
  }
  .main-nav {
    gap: 16px;
  }
  .article-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 32px;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .article-cover img {
    height: 320px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 16px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(8, 18, 32, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 28px;
    border-bottom: 1px solid rgba(0, 229, 160, 0.3);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s ease;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  }
  .main-nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-bottom: 12px;
  }
  .nav-menu a {
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .nav-menu a.active::after {
    left: 0;
    right: auto;
    width: 3px;
    height: 20px;
    top: 50%;
    transform: translateY(-50%);
    bottom: auto;
    border-radius: 3px;
  }
  .nav-cta {
    margin-top: 8px;
    justify-content: center;
    width: 100%;
  }
  .article-hero {
    padding: 48px 0 32px;
  }
  .breadcrumb {
    margin-bottom: 20px;
    font-size: 12px;
  }
  .article-hero h1 {
    font-size: 26px;
  }
  .article-meta {
    gap: 14px;
    font-size: 13px;
  }
  .article-cover-wrap {
    padding: 24px 0 0;
  }
  .article-cover {
    border-radius: var(--radius-md);
  }
  .article-cover img {
    height: 220px;
  }
  .article-layout-wrap {
    padding: 40px 0 24px;
  }
  .article-layout {
    gap: 0;
    padding: 0;
  }
  .article-content {
    font-size: 15px;
    line-height: 1.8;
  }
  .article-content h2 {
    font-size: 21px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .article-content blockquote {
    padding: 14px 16px;
  }
  .article-content table {
    font-size: 13px;
  }
  .article-content table th,
  .article-content table td {
    padding: 8px 10px;
  }
  .article-tags-row {
    padding-top: 20px;
    max-width: 100%;
  }
  .article-pager {
    max-width: 100%;
    padding: 20px 0;
    flex-direction: column;
    align-items: flex-start;
  }
  .page-link {
    font-size: 14px;
  }
  .related-section {
    padding: 56px 0 32px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 4px;
  }
  .related-card-img {
    height: 160px;
  }
  .footer-cta {
    padding: 72px 0 64px;
  }
  .footer-cta h2 {
    font-size: 24px;
  }
  .footer-cta p {
    font-size: 14px;
    padding: 0 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 0 20px 36px;
  }
  .footer-bottom p {
    font-size: 12px;
    padding: 0 16px;
    line-height: 1.6;
  }
  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }
  .btn-block {
    width: 100%;
  }
  .sidebar-card {
    padding: 20px;
  }
}

@media (max-width: 520px) {
  .brand {
    font-size: 15px;
  }
  .brand-dot {
    width: 8px;
    height: 8px;
  }
  .header-inner {
    height: 64px;
  }
  :root {
    --header-height: 64px;
  }
  .footer-cta {
    padding: 56px 0 48px;
  }
  .footer-cta h2 {
    font-size: 21px;
  }
  .footer-cta .btn-primary {
    width: 100%;
    max-width: 300px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #0B1B2B;
  --primary-light: #11263C;
  --accent: #00E5A0;
  --accent-2: #3772FF;
  --bg: #081220;
  --card-bg: rgba(255,255,255,0.04);
  --text-title: #EAF2FF;
  --text-body: #A0B2C8;
  --text-muted: #5F7390;
  --border-color: rgba(255,255,255,0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 15% 0%, rgba(14,31,51,0.55) 0%, transparent 60%),
    radial-gradient(circle at 85% 100%, rgba(8,18,32,0.85) 0%, transparent 55%);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}
.container,
.section-inner,
.header-inner,
.page-hero-inner,
.footer-grid,
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,18,32,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,229,160,0.35);
  box-shadow: 0 1px 24px rgba(0,229,160,0.08);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0,229,160,0.8);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 8px;
  transition: color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.nav-menu a:hover {
  color: var(--text-title);
  background: rgba(255,255,255,0.04);
}
.nav-menu a.active {
  color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent), 0 0 12px rgba(0,229,160,0.15);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 24px rgba(0,229,160,0.35), 0 4px 16px rgba(0,0,0,0.3);
  transition: filter 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}
.nav-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0,229,160,0.45);
}
.nav-cta:active {
  transform: scale(0.97);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  padding: 10px;
  border-radius: 8px;
}
.nav-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,229,160,0.6);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.page-hero {
  position: relative;
  padding: 120px 0 100px;
  background:
    linear-gradient(135deg, rgba(8,18,32,0.55), rgba(8,18,32,0.9)),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(0,229,160,0.15), transparent 50%);
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,160,0.6), transparent);
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0,229,160,0.4);
  background: rgba(0,229,160,0.08);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 1px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  margin-bottom: 20px;
}
.hero-title .accent-text {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #FFFFFF;
  box-shadow: 0 0 24px rgba(0,229,160,0.35), 0 4px 16px rgba(0,0,0,0.3);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0,229,160,0.45);
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255,255,255,0.22);
  color: var(--text-title);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0,229,160,0.15);
}
.btn-ghost:active {
  transform: scale(0.97);
}
.section {
  padding: 100px 0;
}
.section-alt {
  background: rgba(17,38,60,0.35);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0,229,160,0.35);
  background: rgba(0,229,160,0.08);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 1px;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.35;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.section-desc {
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.8;
}
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split-media {
  position: relative;
}
.split-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.split-media::before {
  content: '';
  position: absolute;
  inset: -12px -12px auto auto;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(0,229,160,0.18);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}
.split-content h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 12px;
}
.split-content p {
  margin-bottom: 20px;
}
.checklist li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.checklist li:last-child {
  border-bottom: none;
}
.checklist li::before {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0,229,160,0.8);
  margin-top: 12px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.scenario-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,160,0.3);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.scenario-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,229,160,0.18), rgba(55,114,255,0.18));
  border: 1px solid rgba(0,229,160,0.25);
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 20px;
}
.scenario-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}
.steps-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-item {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.step-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,160,0.3);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #FFFFFF;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 16px;
  box-shadow: 0 0 16px rgba(0,229,160,0.35);
}
.step-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--primary-light);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.active {
  border-color: rgba(0,229,160,0.35);
  box-shadow: 0 0 24px rgba(0,229,160,0.08);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: transparent;
  border: none;
  padding: 20px 24px;
  color: var(--text-title);
  font-size: 17px;
  font-weight: 600;
  text-align: left;
  transition: color 0.3s ease;
}
.faq-question:hover {
  color: var(--accent);
}
.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
  font-size: 18px;
  color: var(--text-body);
  transition: transform 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--accent);
  color: var(--accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.active .faq-answer {
  max-height: 360px;
  padding: 16px 24px 20px;
  border-top-color: rgba(255,255,255,0.06);
}
.cta-banner {
  position: relative;
  padding: 100px 0;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(17,38,60,0.92), rgba(8,18,32,0.96)),
    url('/assets/images/coverpic/cover-7.webp') center / cover no-repeat;
  border-top: 1px solid rgba(0,229,160,0.2);
  border-bottom: 1px solid rgba(0,229,160,0.2);
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,160,0.8), transparent);
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(55,114,255,0.6), transparent);
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}
.cta-inner h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 18px;
  line-height: 1.4;
}
.cta-inner p {
  color: var(--text-body);
  font-size: 16px;
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.site-footer {
  background: #06101C;
  border-top: 1px solid rgba(0,229,160,0.3);
  padding: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-top: 64px;
  padding-bottom: 48px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 360px;
}
.footer-col h4,
.footer-contact h4 {
  font-size: 16px;
  color: var(--text-title);
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-body);
  transition: color 0.3s ease, padding-left 0.3s ease;
}
.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 12px;
}
.footer-contact .contact-note {
  color: var(--text-muted);
  font-size: 13px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  padding-bottom: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}
@media (max-width: 1024px) {
  .nav-cta {
    display: none;
  }
  .split-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .split-media::before {
    display: none;
  }
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    background: rgba(8,18,32,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 16px 24px 24px;
    display: none;
    border-bottom: 1px solid rgba(0,229,160,0.3);
    box-shadow: 0 24px 48px rgba(0,0,0,0.5);
  }
  .main-nav.open {
    display: flex;
  }
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .nav-menu a {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
  }
  .nav-cta {
    display: inline-flex;
    margin-top: 12px;
  }
  .page-hero {
    padding: 80px 0 64px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section {
    padding: 64px 0;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .card-grid,
  .steps-list {
    grid-template-columns: 1fr;
  }
  .cta-banner {
    padding: 64px 0;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 48px;
  }
}
@media (max-width: 520px) {
  .header-inner,
  .section-inner,
  .page-hero-inner,
  .footer-grid,
  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-text {
    font-size: 16px;
    white-space: normal;
  }
  .brand-dot {
    width: 8px;
    height: 8px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .scenario-card {
    padding: 24px 20px;
  }
  .step-item {
    padding: 24px 20px;
  }
  .faq-question {
    font-size: 15px;
    padding: 18px 16px;
  }
  .faq-answer {
    font-size: 14px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #0B1B2B;
  --primary-light: #11263C;
  --accent: #00E5A0;
  --accent2: #3772FF;
  --body-bg: #081220;
  --card-bg: rgba(255,255,255,0.04);
  --card-bg-hover: rgba(255,255,255,0.07);
  --footer-bg: #06101C;
  --text-title: #EAF2FF;
  --text-body: #A0B2C8;
  --text-dim: #5F7390;
  --border: rgba(255,255,255,0.08);
  --border-accent: rgba(0,229,160,0.35);
  --radius-lg: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.5);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --spacing-section: 100px;
  --spacing-mobile: 64px;
}

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

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

body {
  font-family: var(--font-cn);
  background: var(--body-bg);
  background-image: radial-gradient(ellipse at 0% 0%, #0E1F33 0%, var(--body-bg) 60%);
  color: var(--text-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

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

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

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

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,229,160,0.1);
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0,229,160,0.25);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.3;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  letter-spacing: 0.5px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8,18,32,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,229,160,0.6);
  height: 72px;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0,229,160,0.8);
  animation: pulse 2s infinite;
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 4px;
  position: relative;
  transition: color 0.3s ease;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

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

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

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

.nav-cta {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #06101C;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(0,229,160,0.3), 0 4px 12px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px rgba(0,229,160,0.45);
  transform: translateY(-2px);
}

.nav-cta:active {
  transform: scale(0.97);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  padding: 8px;
}

.nav-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== 页头横幅 ===== */
.category-hero {
  position: relative;
  padding: 90px 0 70px;
  background-image: linear-gradient(to bottom, rgba(8,18,32,0.35), rgba(8,18,32,0.95)),
  url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  text-align: center;
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(0,229,160,0.15), transparent 70%);
  pointer-events: none;
}

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

.category-hero h1 {
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.5);
  letter-spacing: 1px;
}

.category-hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.category-hero p {
  max-width: 700px;
  margin: 0 auto 32px;
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.8;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.06);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  border: 1px solid var(--border);
}

.breadcrumb a {
  color: var(--text-body);
  transition: color 0.3s ease;
}

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

/* ===== 图文信息块 ===== */
.info-section {
  padding: var(--spacing-section) 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.info-grid:last-child {
  margin-bottom: 0;
}

.info-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  position: relative;
}

.info-media img {
  width: 100%;
  height: auto;
  min-height: 280px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.info-media:hover img {
  transform: scale(1.03);
}

.info-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,229,160,0.08), transparent 60%);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.info-content h3 {
  font-size: clamp(20px, 2.5vw, 28px);
  color: var(--text-title);
  margin-bottom: 16px;
  font-weight: 700;
  line-height: 1.4;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.info-content p {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.9;
}

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

.info-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-body);
}

.info-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0,229,160,0.6);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn-primary {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: #06101C;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  padding: 14px 32px;
  border-radius: 999px;
  box-shadow: 0 0 24px rgba(0,229,160,0.35), 0 4px 16px rgba(0,0,0,0.3);
  border: none;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(0,229,160,0.5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 13px 32px;
  border-radius: 999px;
  transition: all 0.3s ease;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(0,229,160,0.15);
}

/* ===== 步骤流程 ===== */
.steps-section {
  position: relative;
  background: var(--primary-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.steps-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 60px 0 40px;
}

.step-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
}

.step-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0,229,160,0.12);
  border: 1px solid rgba(0,229,160,0.3);
  box-shadow: 0 0 16px rgba(0,229,160,0.15);
}

.step-card h4 {
  font-size: 17px;
  color: var(--text-title);
  margin-bottom: 8px;
  font-weight: 600;
}

.step-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== 安全要点 ===== */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.safety-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s ease;
}

.safety-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.safety-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(55,114,255,0.15);
  border: 1px solid rgba(55,114,255,0.3);
  margin-bottom: 16px;
  font-size: 18px;
}

.safety-card h4 {
  font-size: 16px;
  color: var(--text-title);
  margin-bottom: 8px;
  font-weight: 600;
}

.safety-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== 支持卡片 ===== */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.support-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
}

.support-item:hover {
  border-color: var(--border-accent);
  background: var(--card-bg-hover);
  transform: translateY(-3px);
}

.support-item .support-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.support-item h4 {
  font-size: 17px;
  color: var(--text-title);
  margin-bottom: 10px;
  font-weight: 600;
}

.support-item p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}

/* ===== FAQ 手风琴 ===== */
.faq-section {
  background: var(--primary-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.faq-item {
  background: #0D2135;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(0,229,160,0.3);
}

.faq-question h3 {
  font-size: 16px;
  color: var(--text-title);
  font-weight: 600;
  padding: 22px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  line-height: 1.5;
  transition: color 0.3s ease;
  margin: 0;
}

.faq-question {
  position: relative;
}

.faq-question h3::before {
  content: '+';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--accent);
  background: rgba(0,229,160,0.1);
  border: 1px solid rgba(0,229,160,0.3);
  transition: transform 0.35s ease;
}

.faq-item.open .faq-question h3::before {
  transform: rotate(45deg);
}

.faq-question h3:hover {
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer p {
  padding: 0 24px 22px 60px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  background: rgba(0,0,0,0.15);
}

/* ===== CTA 横幅 ===== */
.final-cta {
  position: relative;
  padding: 90px 0;
  text-align: center;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.final-cta::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(0,229,160,0.12), transparent 70%);
  pointer-events: none;
}

.final-cta h2 {
  font-size: clamp(24px, 3.5vw, 34px);
  color: var(--text-title);
  margin-bottom: 16px;
  font-weight: 700;
  position: relative;
  z-index: 2;
}

.final-cta p {
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 15px;
  color: var(--text-body);
  position: relative;
  z-index: 2;
}

.final-cta .btn-primary {
  position: relative;
  z-index: 2;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid rgba(0,229,160,0.4);
  padding: 56px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  border-bottom: 1px solid var(--border);
}

.footer-brand .brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
}

.footer-desc {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

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

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.3s ease;
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.footer-contact .contact-note {
  font-size: 13px;
  color: var(--text-dim);
  opacity: 0.8;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  text-align: center;
}

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

/* ===== 浮动 CTA ===== */
.float-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #06101C;
  font-size: 20px;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(0,229,160,0.4);
  z-index: 999;
  animation: floatPulse 2.5s infinite;
  transition: transform 0.3s ease;
}

.float-cta:hover {
  transform: scale(1.1);
}

.float-cta i {
  font-style: normal;
  font-weight: 700;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes floatPulse {
  0% { box-shadow: 0 0 16px rgba(0,229,160,0.4), 0 0 0 0 rgba(0,229,160,0.25); }
  50% { box-shadow: 0 0 28px rgba(0,229,160,0.6), 0 0 0 6px rgba(0,229,160,0.1); }
  100% { box-shadow: 0 0 16px rgba(0,229,160,0.4), 0 0 0 0 rgba(0,229,160,0); }
}

@keyframes floatPulseRing {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .info-grid {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(8,18,32,0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 0;
    transform: translateY(-120%);
    transition: transform 0.4s ease;
    border-bottom: 1px solid rgba(0,229,160,0.5);
    z-index: 999;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-bottom: 20px;
  }

  .nav-menu a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 16px;
    text-align: left;
  }

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

  .nav-menu a.active::after {
    left: 0;
    width: 3px;
    height: 100%;
    transform: none;
    opacity: 1;
    border-radius: 0;
  }

  .nav-cta {
    display: block;
    text-align: center;
    padding: 12px 20px;
  }

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

  .info-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 56px;
  }

  .info-media img {
    min-height: 200px;
  }

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

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

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

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

  .category-hero h1 {
    font-size: 30px;
  }

  .category-hero p {
    font-size: 14px;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn-primary,
  .btn-ghost {
    width: 100%;
    text-align: center;
  }

  .float-cta {
    width: 48px;
    height: 48px;
    bottom: 20px;
    right: 20px;
    font-size: 16px;
  }

  .faq-answer p {
    padding-left: 24px;
    padding-right: 20px;
  }

  .final-cta {
    padding: 60px 0;
  }
}

@media (max-width: 520px) {
  .brand-text {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .container {
    padding: 0 16px;
  }

  .section-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .category-hero {
    padding: 60px 0 50px;
  }

  .category-hero h1 {
    font-size: 26px;
  }

  .footer-grid {
    padding: 0 16px 40px;
  }
}