/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --bg-deep: #0B0E14;
  --bg-elevated: #141925;
  --bg-card: #171D29;
  --border-subtle: rgba(255,255,255,0.08);
  --text-primary: #E8EDF7;
  --text-muted: #A0AABA;
  --primary: #FF2A6D;
  --primary-bright: #FF5C8A;
  --secondary: #05D9E8;
  --success: #3DD68C;
  --warning: #FFB84D;
  --radius-sm: 4px;
  --radius-btn: 8px;
  --radius-card: 16px;
  --radius-lg: 24px;
  --shadow-neon: 0 0 24px rgba(255,42,109,0.35);
  --shadow-cyber: 0 0 20px rgba(5,217,232,0.25);
  --container-w: 1200px;
  --header-h: 72px;
  --space-section: 110px;
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

/* ===== Reset / 基础 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 88px;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--secondary);
  text-decoration: none;
  transition: color .25s ease, opacity .25s ease, border-color .25s ease;
}
a:hover {
  color: var(--primary-bright);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
input {
  font-family: inherit;
}
ul {
  list-style: none;
}
:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 3px;
}

/* ===== 容器 ===== */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 30px;
  border-radius: var(--radius-btn);
  transition: all .25s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  box-shadow: var(--shadow-neon);
}
.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 0 32px rgba(255,42,109,0.5);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--secondary);
  color: var(--secondary);
}
.btn-secondary:hover {
  background: rgba(5,217,232,0.1);
  color: var(--secondary);
}
.btn-secondary:active {
  border-color: var(--primary-bright);
}
.btn-lg {
  padding: 16px 40px;
  font-size: 18px;
}
.btn-sm {
  padding: 10px 22px;
  font-size: 14px;
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(11,14,20,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(8,11,16,0.98);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  box-shadow: 0 0 18px rgba(255,42,109,0.4);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.nav-link {
  padding: 10px 18px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  border-radius: var(--radius-btn);
  transition: color .25s ease;
}
.nav-link:hover {
  color: var(--primary-bright);
}
.nav-link.active {
  color: var(--secondary);
  text-shadow: 0 0 12px rgba(5,217,232,0.6);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  border-radius: var(--radius-btn);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(11,14,20,0.98);
  backdrop-filter: blur(14px);
  padding: 24px 32px 32px;
  border-bottom: 1px solid var(--border-subtle);
  z-index: 999;
}
.mobile-nav.open {
  display: block;
}
.mobile-nav .nav-link {
  display: block;
  padding: 14px 0;
  font-size: 17px;
  border-bottom: 1px solid var(--border-subtle);
}
.mobile-nav .nav-link.active::after {
  display: none;
}
.mobile-nav .btn {
  margin-top: 20px;
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background:
    radial-gradient(ellipse at 15% 40%, rgba(255,42,109,0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(5,217,232,0.12) 0%, transparent 50%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat,
    var(--bg-deep);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    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: 40px 40px;
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.hero-content {
  max-width: 640px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(5,217,232,0.1);
  border: 1px solid rgba(5,217,232,0.3);
  color: var(--secondary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-image {
  position: relative;
}
.hero-image .frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}
.hero-image .frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,14,20,0) 40%, rgba(11,14,20,0.5) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero-image .frame img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.hero-image .frame-caption {
  position: absolute;
  left: 24px;
  bottom: 24px;
  right: 24px;
  z-index: 2;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-image .frame-caption i {
  color: var(--secondary);
}
.hero-float-card {
  position: absolute;
  bottom: -20px;
  left: -30px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 16px 22px;
  box-shadow: var(--shadow-cyber);
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 3;
}
.hero-float-card .num {
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-float-card .label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ===== 信任条 ===== */
.trust-bar {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  padding: 28px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  border-left: 1px solid var(--border-subtle);
}
.trust-item:first-child {
  border-left: none;
  padding-left: 0;
}
.trust-item i {
  font-size: 28px;
  color: var(--primary-bright);
}
.trust-item .trust-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.4;
}
.trust-item .trust-text strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ===== 通用板块 ===== */
.section {
  padding: var(--space-section) 0;
}
.section--elevated {
  background: var(--bg-elevated);
}
.section-header {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-header.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.section-eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-bright);
  margin-bottom: 12px;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== 卖点三连（不对称栅格） ===== */
.feature-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 24px;
  margin-bottom: 24px;
}
.feature-grid--reverse {
  grid-template-columns: 5fr 7fr;
  margin-bottom: 0;
}
.feature-col {
  display: grid;
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(255,42,109,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--secondary);
  box-shadow: var(--shadow-cyber);
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(255,42,109,0.08);
  border: 1px solid rgba(255,42,109,0.25);
  color: var(--primary-bright);
  font-size: 24px;
  margin-bottom: 20px;
}
.feature-icon--cyan {
  background: rgba(5,217,232,0.08);
  border-color: rgba(5,217,232,0.25);
  color: var(--secondary);
}
.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}
.feature-link {
  font-size: 14px;
  color: var(--primary-bright);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}
.feature-link:hover {
  color: var(--secondary);
}
.feature-link i {
  font-size: 12px;
  transition: transform .3s ease;
}
.feature-link:hover i {
  transform: translateX(4px);
}
.feature-card--compact {
  padding: 28px 28px;
}
.feature-card--compact .feature-icon {
  width: 44px;
  height: 44px;
  font-size: 20px;
  margin-bottom: 14px;
}
.feature-card--compact h3 {
  font-size: 18px;
}

/* ===== 场景演示 ===== */
.scene-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}
.scene-row:last-child {
  margin-bottom: 0;
}
.scene-row--reverse .scene-media {
  order: 2;
}
.scene-row--reverse .scene-content {
  order: 1;
}
.scene-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  position: relative;
  box-shadow: 0 16px 50px rgba(0,0,0,0.4);
}
.scene-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform .5s ease;
}
.scene-media:hover img {
  transform: scale(1.03);
}
.scene-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,14,20,0) 60%, rgba(11,14,20,0.3) 100%);
  pointer-events: none;
}
.scene-content h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.scene-content > p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.scene-list {
  margin-bottom: 28px;
}
.scene-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
}
.scene-list li i {
  color: var(--success);
  font-size: 15px;
  margin-top: 5px;
}

/* ===== 社会认同 ===== */
.stats-section {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255,42,109,0.08) 0%, transparent 60%),
    var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 72px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-number {
  font-size: 48px;
  font-weight: 900;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 15px;
  color: var(--text-muted);
}
.testimonial-section {
  padding: var(--space-section) 0;
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px;
  position: relative;
  transition: border-color .3s ease, transform .3s ease;
}
.testimonial-card:hover {
  border-color: rgba(255,42,109,0.4);
  transform: translateY(-4px);
}
.testimonial-card .quote-icon {
  font-size: 32px;
  color: var(--primary);
  opacity: 0.5;
  margin-bottom: 16px;
}
.testimonial-card blockquote {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: 24px;
  font-style: normal;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-author .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
}
.testimonial-author .author-info {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.4;
}
.testimonial-author .author-info strong {
  display: block;
  font-size: 15px;
  color: var(--text-primary);
}

/* ===== CMS 资讯列表 ===== */
.news-section {
  background: var(--bg-deep);
  padding: var(--space-section) 0;
}
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.news-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--secondary);
  box-shadow: var(--shadow-cyber);
}
.news-card--feature {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  padding: 0;
  overflow: hidden;
}
.news-card--feature .news-media {
  position: relative;
  min-height: 240px;
}
.news-card--feature .news-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-card--feature .news-body {
  padding: 32px;
}
.news-card--feature .news-title {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 12px;
}
.news-card--feature .news-summary {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255,42,109,0.1);
  color: var(--primary-bright);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 14px;
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 10px;
  transition: color .25s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card:hover .news-title {
  color: var(--secondary);
}
.news-summary {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.news-meta i {
  font-size: 13px;
  color: var(--primary);
  margin-right: 4px;
}
.news-empty {
  grid-column: span 2;
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: var(--radius-card);
  padding: 60px 40px;
  text-align: center;
  color: var(--text-muted);
}
.news-empty i {
  font-size: 40px;
  color: var(--secondary);
  margin-bottom: 16px;
  display: block;
}
.news-empty p {
  font-size: 16px;
}
.section-actions {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-elevated);
  padding: var(--space-section) 0;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid transparent;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .3s ease, border-left-color .3s ease;
}
.faq-item[open] {
  border-left-color: var(--primary);
}
.faq-item summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  transition: color .25s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: var(--primary-bright);
}
.faq-item summary .faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(5,217,232,0.1);
  color: var(--secondary);
  font-size: 14px;
  transition: transform .3s ease, background .3s ease;
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: rgba(255,42,109,0.1);
  color: var(--primary-bright);
}
.faq-answer {
  padding: 0 24px 24px 58px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ===== CTA 转化区 ===== */
.cta-section {
  padding: var(--space-section) 0;
  position: relative;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(255,42,109,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 50%, rgba(5,217,232,0.1) 0%, transparent 50%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat,
    var(--bg-deep);
}
.cta-panel {
  max-width: 920px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  padding: 72px 64px;
  text-align: center;
  position: relative;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--bg-elevated), var(--bg-elevated)) padding-box,
    linear-gradient(135deg, var(--primary), var(--secondary)) border-box;
  background-size: cover;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.cta-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.cta-desc {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-panel .btn {
  font-size: 17px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #080B10;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--secondary)) 1;
  padding: 72px 0 100px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand .logo-text {
  font-size: 22px;
}
.footer-brand .brand-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-top: 16px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .25s ease;
}
.footer-col ul a:hover {
  color: var(--primary-bright);
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-contact li i {
  color: var(--secondary);
  margin-top: 4px;
  width: 18px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(160,170,186,0.7);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a {
  color: rgba(160,170,186,0.7);
}
.footer-bottom a:hover {
  color: var(--primary-bright);
}

/* ===== 底部固定转化条 ===== */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(11,14,20,0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-subtle);
  z-index: 9999;
  display: flex;
  align-items: center;
  transition: transform .3s ease;
}
.sticky-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
}
.sticky-text {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}
.sticky-text span {
  color: var(--secondary);
}
.sticky-bar .btn {
  padding: 10px 24px;
  font-size: 15px;
}
.sticky-close {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s ease;
  z-index: 2;
}
.sticky-close:hover {
  background: rgba(255,42,109,0.1);
  color: var(--primary-bright);
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .hero-title {
    font-size: 44px;
  }
  .hero-image .frame img {
    height: 360px;
  }
  .feature-grid,
  .feature-grid--reverse {
    grid-template-columns: 1fr;
  }
  .feature-col {
    grid-template-columns: 1fr 1fr;
  }
  .scene-row {
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 991px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero-image {
    max-width: 560px;
    margin: 0 auto;
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .trust-item {
    border-left: none;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-card--feature {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }
  .news-card--feature .news-media {
    min-height: 200px;
  }
  .news-empty {
    grid-column: span 1;
  }
  .scene-row,
  .scene-row--reverse {
    grid-template-columns: 1fr;
  }
  .scene-row--reverse .scene-media {
    order: 1;
  }
  .scene-row--reverse .scene-content {
    order: 2;
  }
  .cta-panel {
    padding: 48px 32px;
  }
}
@media (max-width: 767px) {
  :root {
    --header-h: 60px;
    --space-section: 80px;
  }
  .container {
    padding: 0 16px;
  }
  .main-nav,
  .header-actions .btn {
    display: none;
  }
  .hamburger {
    display: flex;
    margin-left: auto;
  }
  .header-inner {
    gap: 16px;
  }
  .logo-text {
    font-size: 18px;
  }
  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }
  .hero {
    padding: 120px 0 64px;
  }
  .hero-title {
    font-size: 34px;
    line-height: 1.3;
  }
  .hero-subtitle {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-image .frame img {
    height: 260px;
  }
  .hero-float-card {
    bottom: -14px;
    left: -8px;
    padding: 12px 16px;
  }
  .hero-float-card .num {
    font-size: 20px;
  }
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .section-title {
    font-size: 28px;
  }
  .feature-col {
    grid-template-columns: 1fr;
  }
  .feature-card {
    padding: 24px 22px;
  }
  .scene-content h2 {
    font-size: 24px;
  }
  .scene-media img {
    height: 220px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .stat-number {
    font-size: 36px;
  }
  .testimonial-card {
    padding: 24px;
  }
  .cta-panel {
    padding: 40px 24px;
  }
  .cta-title {
    font-size: 26px;
  }
  .cta-desc {
    font-size: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
  .sticky-bar {
    height: auto;
    padding: 12px 16px;
  }
  .sticky-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .sticky-text {
    font-size: 14px;
  }
  .sticky-bar .btn {
    padding: 8px 16px;
    font-size: 14px;
  }
  .sticky-close {
    right: 4px;
    top: 4px;
  }
  .faq-answer {
    padding-left: 20px;
  }
  .news-card--feature .news-body {
    padding: 24px;
  }
  .news-card--feature .news-title {
    font-size: 20px;
  }
  .news-title {
    font-size: 17px;
  }
  .news-summary {
    font-size: 14px;
  }
}

/* roulang page: article */
:root {
  --bg-deep: #0B0E14;
  --bg-elevated: #141925;
  --bg-card: #171D29;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --text-primary: #E8EDF7;
  --text-muted: #A0AABA;
  --primary: #FF2A6D;
  --primary-bright: #FF5C8A;
  --secondary: #05D9E8;
  --success: #3DD68C;
  --warning: #FFB84D;
  --radius-card: 16px;
  --shadow-neon: 0 0 24px rgba(255, 42, 109, 0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --header-height: 72px;
  --container-max: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  background: var(--bg-deep);
  color: var(--text-primary);
  padding-bottom: 88px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 12px 28px;
  border-radius: 8px;
  box-shadow: 0 0 24px rgba(255, 42, 109, 0.35);
  transition: all .3s ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 0 32px rgba(255, 42, 109, 0.5);
  color: #fff;
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 4px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--secondary);
  color: var(--secondary);
  font-weight: 600;
  font-size: 16px;
  padding: 12px 28px;
  border-radius: 8px;
  transition: all .3s ease;
}
.btn-secondary:hover {
  background: rgba(5, 217, 232, 0.1);
  color: var(--secondary);
}
.btn-secondary:active { border-color: #fff; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.92);
  border-bottom: 1px solid transparent;
  transition: all .3s ease;
  backdrop-filter: blur(12px);
}
.site-header.scrolled {
  background: rgba(8, 11, 16, 0.98);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 42, 109, 0.4);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 10px 14px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  transition: color .3s ease, text-shadow .3s ease;
}
.nav-link:hover { color: var(--primary-bright); }
.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--secondary);
  text-shadow: 0 0 12px rgba(5, 217, 232, 0.6);
}
.nav-link.active::after,
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(11, 14, 20, 0.98);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 20px;
  flex-direction: column;
  gap: 4px;
  z-index: 999;
}
.mobile-nav.open { display: flex; }
.mobile-link {
  display: block;
  padding: 14px 12px;
  color: var(--text-muted);
  font-size: 16px;
  border-radius: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: all .3s ease;
}
.mobile-link:hover {
  color: var(--primary-bright);
  background: rgba(255, 42, 109, 0.06);
}
.mobile-link.active {
  color: var(--secondary);
  background: rgba(5, 217, 232, 0.06);
  text-shadow: 0 0 12px rgba(5, 217, 232, 0.4);
}
.breadcrumb {
  padding: 28px 0 4px;
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.breadcrumb a { color: var(--text-muted); transition: color .3s ease; }
.breadcrumb a:hover { color: var(--primary-bright); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.3); }
.breadcrumb .crumb-current {
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}
.article-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 32px 0;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}
.article-header h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.3;
  margin: 16px 0 16px;
  letter-spacing: 0.5px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}
.badge {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 42, 109, 0.1);
  color: var(--primary-bright);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 4px;
}
.article-date {
  font-size: 13px;
  color: var(--text-muted);
}
.article-excerpt {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-muted);
}
.article-content {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
}
.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 1.6em 0 0.6em;
  line-height: 1.35;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}
.article-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 1.4em 0 0.6em;
  line-height: 1.4;
}
.article-content p {
  margin-bottom: 1.5em;
  line-height: 1.85;
}
.article-content img {
  max-width: 100%;
  border-radius: 12px;
  margin: 1.5em auto;
}
.article-content blockquote {
  border-left: 3px solid var(--secondary);
  background: rgba(5, 217, 232, 0.06);
  padding: 16px 20px;
  margin: 1.5em 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
}
.article-content ul,
.article-content ol {
  margin: 1em 0 1.5em;
  padding-left: 1.4em;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 0.5em;
  line-height: 1.8;
}
.article-content a {
  color: var(--secondary);
  border-bottom: 1px solid rgba(5, 217, 232, 0.4);
  transition: all .3s ease;
}
.article-content a:hover {
  color: var(--primary-bright);
  border-bottom-color: var(--primary);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 600;
}
.article-content pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.5em 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-primary);
}
.article-footer-nav {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}
.article-not-found {
  text-align: center;
  padding: 80px 24px;
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-card);
}
.not-found-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(5, 217, 232, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--secondary);
}
.article-not-found h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}
.article-not-found p {
  color: var(--text-muted);
  margin-bottom: 24px;
}
.related-section {
  padding: 96px 0 40px;
}
.related-section .section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  text-align: center;
}
.related-section .section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 48px;
  font-size: 18px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all .35s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--secondary);
  box-shadow: 0 8px 32px rgba(5, 217, 232, 0.12);
}
.related-card .card-img {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  transition: color .3s ease;
}
.related-card:hover h3 { color: var(--primary-bright); }
.related-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
.related-card .card-more {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--secondary);
  font-size: 14px;
  font-weight: 600;
  transition: gap .3s ease;
}
.related-card .card-more:hover { gap: 12px; }
.cta-section {
  padding: 96px 0;
}
.cta-box {
  position: relative;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-radius: 24px;
  padding: 72px 48px;
  text-align: center;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 14, 20, 0.92), rgba(20, 25, 37, 0.85));
  z-index: 1;
}
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-box p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.cta-box .btn-primary { margin: 0 auto; }
.site-footer {
  background: #080B10;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0;
  position: relative;
}
.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-text { font-size: 22px; }
.brand-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 12px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .3s ease, padding-left .3s ease;
}
.footer-col ul li a:hover {
  color: var(--primary-bright);
  padding-left: 4px;
}
.footer-contact li {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}
.footer-contact i {
  width: 20px;
  color: var(--secondary);
  margin-right: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-muted);
  font-size: 13px;
}
.footer-bottom span:last-child { color: rgba(255, 255, 255, 0.4); }
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.96);
  border-top: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}
.sticky-cta-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.sticky-cta-inner p {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}
.sticky-close {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s ease;
  background: transparent;
  border: 1px solid transparent;
}
.sticky-close:hover {
  color: var(--primary-bright);
  border-color: var(--border-subtle);
}
@media (max-width: 1199px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
}
@media (max-width: 991px) {
  .container { padding: 0 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 767px) {
  body { padding-bottom: 72px; }
  :root { --header-height: 60px; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav { display: none; }
  .mobile-nav.open { display: flex; }
  .header-inner { height: var(--header-height); }
  .logo-text { font-size: 17px; }
  .logo-mark { width: 34px; height: 34px; font-size: 17px; }
  .article-container { padding: 24px 16px 0; }
  .article-header h1 { font-size: 30px; }
  .article-excerpt { font-size: 16px; }
  .article-content h2 { font-size: 24px; }
  .article-content h3 { font-size: 20px; }
  .breadcrumb { padding: 20px 8px 4px; font-size: 13px; }
  .breadcrumb .crumb-current { max-width: 160px; }
  .related-section { padding: 64px 0 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-section .section-title { font-size: 28px; }
  .cta-section { padding: 64px 0; }
  .cta-box { padding: 48px 24px; }
  .cta-box h2 { font-size: 28px; }
  .cta-box p { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 32px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
  .sticky-cta-inner { height: 56px; gap: 12px; }
  .sticky-cta-inner p { font-size: 13px; margin-right: 16px; }
  .sticky-cta-inner .btn-sm { font-size: 13px; padding: 8px 16px; }
  .sticky-close { right: 8px; }
  .article-footer-nav { flex-wrap: wrap; }
}
@media (max-width: 519px) {
  .container { padding: 0 16px; }
  .article-header h1 { font-size: 26px; }
  .article-content p { font-size: 15px; line-height: 1.8; }
  .related-card h3 { font-size: 18px; }
  .footer-bottom span { font-size: 12px; }
}

/* roulang page: category1 */
:root{
  --bg-deep:#0B0E14;
  --bg-elevated:#141925;
  --bg-card:#171D29;
  --border-subtle:rgba(255,255,255,.08);
  --text-primary:#E8EDF7;
  --text-muted:#A0AABA;
  --primary:#FF2A6D;
  --primary-bright:#FF5C8A;
  --secondary:#05D9E8;
  --success:#3DD68C;
  --warning:#FFB84D;
  --radius-card:16px;
  --radius-btn:8px;
  --radius-small:4px;
  --shadow-neon:0 0 24px rgba(255,42,109,.35);
  --shadow-cyan:0 0 24px rgba(5,217,232,.22);
  --container:1200px;
  --section-pad:96px;
  --font-cn:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-primary);
  background:var(--bg-deep);
  -webkit-font-smoothing:antialiased;
  padding-bottom:88px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s ease}
ul{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 32px}
section[id]{scroll-margin-top:96px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 34px;border-radius:var(--radius-btn);font-size:16px;font-weight:600;
  line-height:1.2;border:1px solid transparent;cursor:pointer;
  transition:all .3s ease;text-decoration:none;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-bright));
  color:#fff;box-shadow:var(--shadow-neon);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 32px rgba(255,42,109,.5);color:#fff}
.btn-primary:active{transform:scale(.98)}
.btn-secondary{
  background:transparent;border-color:var(--secondary);color:var(--secondary);
}
.btn-secondary:hover{background:rgba(5,217,232,.1);border-color:var(--secondary);color:var(--secondary)}
.btn-secondary:active{transform:scale(.98);border-color:var(--primary-bright)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn-lg{padding:16px 42px;font-size:17px}

/* ===== 标签/徽章 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-small);
  background:rgba(255,42,109,.1);color:var(--primary-bright);
  font-size:13px;font-weight:500;line-height:1.4;
}
.tag-cyan{background:rgba(5,217,232,.1);color:var(--secondary)}
.tag-success{background:rgba(61,214,140,.1);color:var(--success)}
.tag-warning{background:rgba(255,184,77,.1);color:var(--warning)}
.tag-light{background:rgba(255,255,255,.06);color:var(--text-muted)}

/* ===== 区块通用 ===== */
.section{padding:var(--section-pad) 0}
.section-head{max-width:680px;margin-bottom:48px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;letter-spacing:2px;
  color:var(--secondary);text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
.section-head h2{font-size:34px;line-height:1.25;font-weight:800;letter-spacing:1px;margin-bottom:14px}
.section-head p{font-size:17px;color:var(--text-muted)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow::before{display:none}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,14,20,.92);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.site-header.scrolled{background:rgba(8,11,16,.97);border-bottom-color:var(--border-subtle);box-shadow:0 8px 32px rgba(0,0,0,.4)}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:#fff;
  box-shadow:0 0 18px rgba(255,42,109,.4);
}
.logo-text{font-size:20px;font-weight:800;letter-spacing:1px;color:var(--text-primary)}
.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{
  position:relative;padding:10px 16px;font-size:16px;font-weight:500;color:var(--text-muted);
  border-radius:var(--radius-btn);transition:color .25s ease,background .25s ease;
}
.nav-link:hover{color:var(--primary-bright)}
.nav-link.active{color:var(--secondary);text-shadow:0 0 12px rgba(5,217,232,.6);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;box-shadow:0 0 8px rgba(5,217,232,.5);
}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--border-subtle);align-items:center;justify-content:center;font-size:18px;color:var(--text-primary);background:var(--bg-elevated)}

/* ===== Hero ===== */
.category-hero{
  position:relative;overflow:hidden;padding:150px 0 80px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%,rgba(255,42,109,.14),transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%,rgba(5,217,232,.1),transparent 60%),
    linear-gradient(180deg,rgba(11,14,20,.4),var(--bg-deep) 90%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.category-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:44px 44px;
}
.category-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);
  margin-bottom:28px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--secondary)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--text-primary);font-weight:500}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.hero-content .hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:40px;
  background:rgba(5,217,232,.08);border:1px solid rgba(5,217,232,.25);
  color:var(--secondary);font-size:13px;font-weight:500;letter-spacing:1px;margin-bottom:22px;
}
.hero-content h1{font-size:56px;line-height:1.2;font-weight:900;letter-spacing:1px;color:#fff;margin-bottom:20px}
.hero-content h1 .grad{
  background:linear-gradient(135deg,var(--primary-bright),var(--secondary));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-content .subtitle{font-size:18px;line-height:1.85;color:var(--text-muted);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;padding-top:28px;border-top:1px solid var(--border-subtle)}
.hero-stats .stat .num{font-size:26px;font-weight:800;color:#fff;line-height:1.2}
.hero-stats .stat .num i{color:var(--primary-bright);margin-right:4px;font-size:20px;vertical-align:1px}
.hero-stats .stat .label{font-size:13px;color:var(--text-muted);margin-top:2px}
.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid rgba(255,42,109,.35);
  box-shadow:0 0 40px rgba(255,42,109,.18),0 24px 60px rgba(0,0,0,.5);
}
.hero-visual .frame::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent 50%,rgba(11,14,20,.55));
}
.hero-visual .frame img{width:100%;height:480px;object-fit:cover}
.hero-visual .corner{
  position:absolute;width:28px;height:28px;z-index:3;border-style:solid;border-color:var(--secondary);border-width:0;
}
.hero-visual .corner.tl{top:-1px;left:-1px;border-top-width:2px;border-left-width:2px;border-top-left-radius:8px}
.hero-visual .corner.br{bottom:-1px;right:-1px;border-bottom-width:2px;border-right-width:2px;border-bottom-right-radius:8px}
.hero-visual .float-card{
  position:absolute;bottom:24px;left:-24px;z-index:4;
  background:rgba(23,29,41,.94);border:1px solid var(--border-subtle);border-radius:14px;
  padding:16px 20px;display:flex;align-items:center;gap:14px;
  box-shadow:0 16px 40px rgba(0,0,0,.5);backdrop-filter:blur(8px);
}
.hero-visual .float-card .icon{width:42px;height:42px;border-radius:10px;background:rgba(5,217,232,.12);display:flex;align-items:center;justify-content:center;color:var(--secondary);font-size:18px}
.hero-visual .float-card .txt b{display:block;font-size:14px;color:var(--text-primary)}
.hero-visual .float-card .txt span{font-size:12px;color:var(--text-muted)}

/* ===== 信任条 ===== */
.trust-bar{border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);background:var(--bg-elevated);padding:24px 0}
.trust-bar .trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{display:flex;align-items:center;justify-content:center;gap:12px;text-align:left}
.trust-item i{font-size:24px;color:var(--primary-bright);width:40px;height:40px;border-radius:10px;background:rgba(255,42,109,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.trust-item .txt b{display:block;font-size:20px;font-weight:800;color:#fff;line-height:1.2}
.trust-item .txt span{font-size:13px;color:var(--text-muted)}

/* ===== 核心优势不对称 ===== */
.features{padding:var(--section-pad) 0}
.features-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-card);
  padding:32px;transition:all .35s ease;position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  opacity:0;transition:opacity .3s ease;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(5,217,232,.45);box-shadow:var(--shadow-cyan)}
.feature-card:hover::before{opacity:1}
.feature-card .icon{
  width:54px;height:54px;border-radius:14px;margin-bottom:22px;
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.feature-card .icon.pink{background:rgba(255,42,109,.12);color:var(--primary-bright)}
.feature-card .icon.cyan{background:rgba(5,217,232,.1);color:var(--secondary)}
.feature-card h3{font-size:22px;font-weight:700;margin-bottom:10px;color:#fff}
.feature-card p{font-size:15px;color:var(--text-muted);line-height:1.8}
.feature-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--secondary)}
.feature-card .more i{transition:transform .3s ease}
.feature-card .more:hover i{transform:translateX(4px)}
.feature-main{grid-column:span 7;min-height:280px}
.feature-main .icon{width:64px;height:64px;font-size:26px}
.feature-sub{grid-column:span 5;min-height:132px}
.feature-sub-row{display:flex;flex-direction:column;gap:24px}

/* ===== 课程体系卡片 ===== */
.course-grid-section{background:var(--bg-elevated);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);padding:var(--section-pad) 0}
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.course-card{
  background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-card);
  overflow:hidden;transition:all .35s ease;display:flex;flex-direction:column;
}
.course-card:hover{transform:translateY(-6px);border-color:rgba(255,42,109,.45);box-shadow:0 12px 36px rgba(255,42,109,.15)}
.course-card .cover{position:relative;aspect-ratio:16/10;overflow:hidden}
.course-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.course-card:hover .cover img{transform:scale(1.05)}
.course-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,14,20,.65))}
.course-card .cover .tags{position:absolute;left:16px;top:14px;z-index:2;display:flex;gap:6px}
.course-card .body{padding:24px;display:flex;flex-direction:column;flex:1}
.course-card h3{font-size:20px;font-weight:700;margin-bottom:8px;color:#fff}
.course-card .body p{font-size:14px;color:var(--text-muted);line-height:1.75;flex:1}
.course-card .meta{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:16px;border-top:1px solid var(--border-subtle)}
.course-card .meta .duration{font-size:13px;color:var(--text-muted)}
.course-card .meta .duration i{color:var(--secondary);margin-right:4px}
.course-card .link{font-size:14px;font-weight:600;color:var(--secondary);display:inline-flex;align-items:center;gap:6px}
.course-card .link i{transition:transform .3s ease}
.course-card .link:hover i{transform:translateX(4px)}
.course-card .link:hover{color:var(--primary-bright)}

/* ===== 场景 ===== */
.scene{padding:var(--section-pad) 0}
.scene-block{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:96px}
.scene-block:last-child{margin-bottom:0}
.scene-block .img-wrap{
  border-radius:24px;overflow:hidden;position:relative;
  border:1px solid var(--border-subtle);box-shadow:0 20px 60px rgba(0,0,0,.45);
}
.scene-block .img-wrap img{width:100%;height:360px;object-fit:cover}
.scene-block .img-wrap .badge-float{
  position:absolute;bottom:18px;left:18px;z-index:2;
  background:rgba(11,14,20,.88);border:1px solid var(--border-subtle);border-radius:10px;
  padding:10px 16px;font-size:13px;color:var(--secondary);display:flex;align-items:center;gap:8px;
  backdrop-filter:blur(6px);
}
.scene-block .text h2{font-size:30px;font-weight:800;line-height:1.3;margin-bottom:16px;color:#fff}
.scene-block .text h2 em{font-style:normal;color:var(--secondary)}
.scene-block .text>p{font-size:16px;color:var(--text-muted);line-height:1.85;margin-bottom:22px}
.scene-list{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}
.scene-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text-primary)}
.scene-list li i{color:var(--success);margin-top:4px;font-size:16px;flex-shrink:0}

/* ===== 流程 ===== */
.process-section{background:var(--bg-elevated);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);padding:var(--section-pad) 0}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.process-step{
  background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-card);
  padding:30px 26px;position:relative;transition:all .3s ease;
}
.process-step:hover{transform:translateY(-4px);border-color:rgba(5,217,232,.4);box-shadow:var(--shadow-cyan)}
.process-step .step-num{
  font-size:44px;font-weight:900;line-height:1;
  background:linear-gradient(135deg,var(--primary-bright),var(--secondary));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:16px;font-family:inherit;
}
.process-step h3{font-size:19px;font-weight:700;margin-bottom:8px;color:#fff}
.process-step p{font-size:14px;color:var(--text-muted);line-height:1.75}

/* ===== 学员评价 ===== */
.testimonials{padding:var(--section-pad) 0}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{
  background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-card);
  padding:32px;display:flex;flex-direction:column;transition:all .3s ease;position:relative;
}
.testimonial-card:hover{border-color:rgba(255,42,109,.35);box-shadow:0 10px 32px rgba(255,42,109,.1)}
.testimonial-card .quote-icon{font-size:34px;color:rgba(255,42,109,.5);line-height:1;margin-bottom:18px}
.testimonial-card .quote-text{font-size:15px;color:var(--text-primary);line-height:1.85;flex:1;margin-bottom:22px}
.testimonial-card .author{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border-subtle);padding-top:16px}
.testimonial-card .author .avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;background:var(--bg-elevated);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;color:var(--secondary);flex-shrink:0;border:1px solid var(--border-subtle)}
.testimonial-card .author .who b{display:block;font-size:15px;color:#fff;font-weight:600}
.testimonial-card .author .who span{font-size:13px;color:var(--text-muted)}

/* ===== FAQ ===== */
.faq-section{padding:var(--section-pad) 0;background:var(--bg-deep)}
.faq-accordion{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px;
  overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease;
}
.faq-item[open]{border-color:rgba(255,42,109,.4);box-shadow:0 0 24px rgba(255,42,109,.08)}
.faq-item summary{
  padding:22px 26px;font-size:17px;font-weight:600;cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--text-primary);
  position:relative;transition:color .3s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--secondary)}
.faq-item summary .fa-chevron-down{transition:transform .35s ease;color:var(--text-muted);font-size:14px;flex-shrink:0}
.faq-item[open] summary{color:var(--secondary);border-left:3px solid var(--primary)}
.faq-item[open] summary .fa-chevron-down{transform:rotate(180deg);color:var(--secondary)}
.faq-item .faq-body{padding:0 26px 24px 26px;border-left:3px solid transparent}
.faq-item[open] .faq-body{color:var(--text-muted);font-size:15px;line-height:1.85}

/* ===== CTA ===== */
.cta-section{padding:var(--section-pad) 0;border-top:1px solid var(--border-subtle)}
.cta-panel{
  position:relative;border-radius:24px;overflow:hidden;padding:80px 56px;
  background:
    linear-gradient(90deg,rgba(255,42,109,.18),rgba(5,217,232,.12)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border:1px solid var(--border-subtle);
  box-shadow:0 20px 60px rgba(0,0,0,.4);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,14,20,.85),rgba(11,14,20,.6));
}
.cta-panel .cta-inner{position:relative;z-index:2;text-align:center;max-width:620px;margin:0 auto}
.cta-panel h2{font-size:38px;font-weight:900;line-height:1.3;color:#fff;margin-bottom:16px}
.cta-panel h2 .grad{
  background:linear-gradient(135deg,var(--primary-bright),var(--secondary));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.cta-panel p{font-size:18px;color:var(--text-muted);line-height:1.8;margin-bottom:32px}
.cta-panel .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:#080B10;border-top:1px solid var(--border-subtle);padding:72px 0 0}
.site-footer::before{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px}
.brand-desc{font-size:14px;color:var(--text-muted);line-height:1.85;max-width:300px;margin-top:14px}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:1px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul li a{font-size:14px;color:var(--text-muted);transition:color .25s ease,padding-left .25s ease}
.footer-col ul li a:hover{color:var(--primary-bright);padding-left:4px}
.footer-contact li{font-size:14px;color:var(--text-muted);display:flex;align-items:center;gap:10px;line-height:1.6}
.footer-contact li i{color:var(--secondary);width:16px;text-align:center;flex-shrink:0}
.footer-bottom{
  border-top:1px solid var(--border-subtle);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-muted);
}

/* ===== 底部固定转化条 ===== */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:99;
  background:rgba(11,14,20,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--border-subtle);
  transition:transform .4s ease;
}
.sticky-cta.hidden{transform:translateY(110%)}
.sticky-cta-inner{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;padding:10px 56px 10px 32px}
.sticky-cta .sticky-text{font-size:15px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:10px}
.sticky-cta .sticky-text i{color:var(--primary-bright)}
.sticky-cta .sticky-actions{display:flex;align-items:center;gap:12px}
.sticky-close{width:34px;height:34px;border-radius:8px;border:1px solid var(--border-subtle);background:var(--bg-elevated);color:var(--text-muted);position:absolute;right:12px;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .25s ease}
.sticky-close:hover{color:var(--primary-bright);border-color:rgba(255,42,109,.4)}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:40px}
  .hero-content h1{font-size:46px}
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .scene-block{grid-template-columns:1fr;gap:36px}
  .scene-block .img-wrap{order:-1}
  .testimonials-grid{grid-template-columns:1fr;max-width:640px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--section-pad:64px}
  .container{padding:0 16px}
  .header-inner{height:60px}
  body{padding-bottom:76px}
  .menu-toggle{display:flex}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;z-index:98;
    background:rgba(11,14,20,.98);border-bottom:1px solid var(--border-subtle);
    flex-direction:column;align-items:stretch;padding:16px;gap:4px;
    transform:translateY(-130%);transition:transform .35s ease;box-shadow:0 20px 40px rgba(0,0,0,.5);
  }
  .main-nav.open{transform:translateY(0)}
  .nav-link{padding:13px 14px;font-size:16px;border-radius:8px}
  .nav-link.active{background:rgba(5,217,232,.06)}
  .nav-link.active::after{display:none}
  .header-actions .btn-sm{display:none}
  .category-hero{padding:110px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-content h1{font-size:34px}
  .hero-content .subtitle{font-size:16px}
  .hero-actions .btn{flex:1;justify-content:center}
  .hero-stats{gap:20px;justify-content:space-between}
  .hero-visual .frame img{height:300px}
  .hero-visual .float-card{left:12px;bottom:14px}
  .trust-grid{grid-template-columns:1fr 1fr;gap:16px}
  .features-grid{grid-template-columns:1fr}
  .feature-main,.feature-sub{grid-column:span 1}
  .course-grid{grid-template-columns:1fr}
  .section-head h2{font-size:27px}
  .process-grid{grid-template-columns:1fr}
  .cta-panel{padding:56px 24px}
  .cta-panel h2{font-size:30px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .sticky-cta-inner{padding:10px 46px 10px 14px}
  .sticky-cta .sticky-text{font-size:13px}
  .sticky-cta .btn-sm{padding:9px 14px;font-size:13px}
}
@media (max-width:520px){
  .hero-content h1{font-size:30px}
  .trust-grid{grid-template-columns:1fr 1fr;gap:12px}
  .trust-item i{width:34px;height:34px;font-size:18px}
  .trust-item .txt b{font-size:17px}
  .hero-stats .stat .num{font-size:21px}
  .sticky-cta .sticky-text i{display:none}
  .btn-group .btn{width:100%}
}

/* roulang page: category2 */
:root {
  --bg-deep: #0B0E14;
  --bg-elevated: #141925;
  --bg-card: #171D29;
  --border-subtle: rgba(255,255,255,0.08);
  --text-primary: #E8EDF7;
  --text-muted: #A0AABA;
  --primary: #FF2A6D;
  --primary-bright: #FF5C8A;
  --secondary: #05D9E8;
  --success: #3DD68C;
  --warning: #FFB84D;
  --radius-sm: 4px;
  --radius-card: 16px;
  --radius-panel: 24px;
  --shadow-neon: 0 0 24px rgba(255,42,109,0.35);
  --shadow-cyan: 0 0 20px rgba(5,217,232,0.2);
  --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --header-height: 72px;
  --container-padding: 32px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-deep);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  padding-bottom: 88px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .3s ease, border-color .3s ease, background .3s ease, box-shadow .3s ease, transform .3s ease;
}

ul, ol {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ======== Header / Nav ======== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11,14,20,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
  height: var(--header-height);
}

.site-header.scrolled {
  background: rgba(8,11,16,0.97);
  border-bottom-color: var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
}

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

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 18px rgba(255,42,109,0.35);
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--text-primary), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  transition: color .3s ease, text-shadow .3s ease;
}

.nav-link:hover {
  color: var(--primary-bright);
  text-shadow: 0 0 12px rgba(255,42,109,0.4);
}

.nav-link.active {
  color: var(--secondary);
  text-shadow: 0 0 12px rgba(5,217,232,0.6);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: -8px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(5,217,232,0.5);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  box-shadow: var(--shadow-neon);
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,42,109,0.5);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}

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

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

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

/* ======== Breadcrumb ======== */
.breadcrumb {
  padding-top: calc(var(--header-height) + 24px);
  padding-bottom: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color .3s ease;
}

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

.breadcrumb i {
  margin: 0 10px;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
}

/* ======== Page Hero ======== */
.page-hero {
  position: relative;
  padding: 96px 0 72px;
  background: linear-gradient(135deg, rgba(11,14,20,0.92), rgba(11,14,20,0.75));
  border-bottom: 1px solid rgba(255,255,255,0.04);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: 0.35;
  z-index: -1;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 40%, rgba(255,42,109,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 30%, rgba(5,217,232,0.1) 0%, transparent 50%);
  z-index: -1;
}

.hero-inner {
  max-width: 780px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(255,42,109,0.12);
  border: 1px solid rgba(255,42,109,0.35);
  color: var(--primary-bright);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.hero-tag i {
  font-size: 12px;
}

.page-hero h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.page-hero h1 span {
  background: linear-gradient(135deg, var(--primary-bright), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 660px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ======== Buttons ======== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 34px rgba(255,42,109,0.5);
  color: #fff;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 1px solid rgba(5,217,232,0.6);
  box-shadow: 0 0 12px rgba(5,217,232,0.08);
}

.btn-outline:hover {
  background: rgba(5,217,232,0.12);
  box-shadow: var(--shadow-cyan);
  color: var(--secondary);
}

.btn-outline:active {
  transform: scale(0.98);
}

/* ======== Section Common ======== */
.section {
  padding: 96px 0;
}

.section-head {
  max-width: 700px;
  margin-bottom: 48px;
}

.section-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 16px;
}

.section-sub::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--secondary);
  border-radius: 2px;
  box-shadow: var(--shadow-cyan);
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ======== Full Banner ======== */
.full-banner {
  position: relative;
  padding: 0;
}

.banner-inner {
  position: relative;
  border-radius: var(--radius-panel);
  padding: 72px 56px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: center;
}

.banner-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity: 0.25;
  z-index: 0;
}

.banner-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,14,20,0.92) 30%, rgba(11,14,20,0.5) 100%);
  z-index: 1;
}

.banner-content {
  position: relative;
  z-index: 2;
  flex: 1 1 55%;
}

.banner-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 16px;
}

.banner-title span {
  color: var(--primary-bright);
}

.banner-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.banner-points {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}

.banner-points li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-primary);
  padding: 6px 14px;
  background: rgba(255,255,255,0.04);
  border-radius: 100px;
  border: 1px solid var(--border-subtle);
}

.banner-points li i {
  color: var(--success);
  font-size: 12px;
}

.banner-visual {
  position: relative;
  z-index: 2;
  flex: 1 1 35%;
  min-width: 280px;
}

.banner-visual img {
  border-radius: 16px;
  border: 1px solid rgba(5,217,232,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

/* ======== Service Cards ======== */
.service-cards {
  background: var(--bg-deep);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(5,217,232,0.35);
  box-shadow: var(--shadow-cyan);
}

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

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.service-card:hover .card-cover img {
  transform: scale(1.06);
}

.card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-card) 0%, transparent 45%);
}

.card-icon {
  position: absolute;
  bottom: -24px;
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 8px 24px rgba(255,42,109,0.3);
  z-index: 2;
}

.card-icon.cyan {
  background: linear-gradient(135deg, #05D9E8, #0BB8C4);
  box-shadow: 0 8px 24px rgba(5,217,232,0.25);
}

.card-body {
  padding: 32px 26px 26px;
}

.card-body .tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-bright);
  background: rgba(255,42,109,0.1);
  margin-bottom: 14px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.card-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--secondary);
  transition: gap .3s ease;
}

.card-link:hover {
  gap: 12px;
}

.card-link i {
  font-size: 12px;
}

/* ======== Process ======== */
.process-section {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.step-item {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  transition: transform .3s ease, border-color .3s ease;
}

.step-item:hover {
  transform: translateY(-4px);
  border-color: rgba(5,217,232,0.3);
}

.step-num {
  font-size: 40px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 18px;
  display: block;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ======== Stats ======== */
.stats-section {
  position: relative;
  overflow: hidden;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-num {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--primary-bright), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.stat-label {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 6px;
}

.stat-divider {
  position: relative;
}

.stat-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -16px;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(5,217,232,0.4), transparent);
  transform: translateY(-50%);
}

/* ======== Reviews ======== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px;
  position: relative;
  transition: border-color .3s ease, box-shadow .3s ease;
}

.review-card:hover {
  border-color: rgba(255,42,109,0.3);
  box-shadow: 0 0 28px rgba(255,42,109,0.08);
}

.review-card::before {
  content: "\201C";
  position: absolute;
  top: 10px;
  left: 24px;
  font-size: 80px;
  font-family: Georgia, serif;
  color: rgba(255,42,109,0.2);
  line-height: 1;
}

.review-text {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
  margin: 20px 0 24px;
  padding-left: 18px;
  border-left: 2px solid rgba(255,42,109,0.4);
}

.reviewer {
  display: flex;
  align-items: center;
  gap: 14px;
}

.reviewer-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.reviewer-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.reviewer-role {
  font-size: 13px;
  color: var(--text-muted);
}

.review-stars {
  margin-left: auto;
  color: var(--warning);
  font-size: 14px;
  letter-spacing: 2px;
}

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

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

.faq-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s ease;
}

.faq-item[open] {
  border-color: rgba(255,42,109,0.3);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: color .3s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--secondary);
  transition: transform .35s ease;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item[open] summary {
  border-left: 3px solid var(--primary);
  color: var(--primary-bright);
}

.faq-answer {
  padding: 0 26px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ======== CTA ======== */
.cta-panel {
  padding: 96px 0;
  background: var(--bg-deep);
}

.cta-inner {
  position: relative;
  border-radius: var(--radius-panel);
  padding: 72px 40px;
  text-align: center;
  overflow: hidden;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border: 1px solid transparent;
  background-clip: padding-box;
  z-index: 1;
}

.cta-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,14,20,0.94), rgba(20,25,37,0.88));
  z-index: 0;
}

.cta-inner::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--primary));
  border-radius: var(--radius-panel);
  z-index: -1;
  opacity: 0.5;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 16px;
}

.cta-title span {
  color: var(--primary-bright);
}

.cta-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.cta-inner .btn {
  min-width: 200px;
}

/* ======== Footer ======== */
.site-footer {
  background: #080B10;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  padding-top: 64px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0.6;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.brand-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-primary);
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .3s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-contact li i {
  margin-top: 4px;
  color: var(--secondary);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom span {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ======== Sticky CTA ======== */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: rgba(11,14,20,0.97);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-subtle);
  padding: 12px 0;
  transform: translateY(0);
  transition: transform .4s ease, opacity .4s ease;
  box-shadow: 0 -8px 30px rgba(0,0,0,0.3);
}

.sticky-cta.hidden {
  transform: translateY(100%);
  opacity: 0;
}

.sticky-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.sticky-text {
  display: flex;
  align-items: center;
  gap: 14px;
}

.sticky-text i {
  font-size: 20px;
  color: var(--primary-bright);
}

.sticky-text span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.sticky-text small {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
}

.sticky-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 26px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  box-shadow: 0 0 18px rgba(255,42,109,0.3);
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease;
}

.sticky-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(255,42,109,0.45);
}

.sticky-close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  transition: all .3s ease;
  background: transparent;
}

.sticky-close:hover {
  color: var(--primary-bright);
  border-color: var(--primary);
  background: rgba(255,42,109,0.08);
}

/* ======== Responsive ======== */
@media (max-width: 1199px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .stat-divider::before {
    display: none;
  }

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

@media (max-width: 767px) {
  :root {
    --container-padding: 16px;
    --header-height: 60px;
  }

  .site-header {
    height: var(--header-height);
  }

  .header-inner {
    height: var(--header-height);
  }

  .logo-text {
    font-size: 18px;
  }

  .logo-mark {
    width: 34px;
    height: 34px;
    font-size: 17px;
    border-radius: 8px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(8,11,16,0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 6px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-link {
    display: block;
    padding: 14px 18px;
    font-size: 17px;
    text-align: center;
    border-radius: 10px;
  }

  .nav-link.active {
    background: rgba(5,217,232,0.08);
  }

  .nav-link.active::after {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .breadcrumb {
    padding-top: calc(var(--header-height) + 16px);
  }

  .page-hero {
    padding: 64px 0 48px;
  }

  .page-hero h1 {
    font-size: 34px;
    line-height: 1.25;
  }

  .hero-desc {
    font-size: 16px;
  }

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

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

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .section-desc {
    font-size: 15px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .banner-inner {
    padding: 40px 24px;
    flex-direction: column;
  }

  .banner-title {
    font-size: 24px;
  }

  .banner-visual {
    min-width: 0;
  }

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

  .review-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .review-card {
    padding: 28px 20px;
  }

  .review-stars {
    display: none;
  }

  .faq-item summary {
    padding: 18px 18px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 18px 18px;
    font-size: 14px;
  }

  .cta-panel {
    padding: 64px 0;
  }

  .cta-inner {
    padding: 48px 20px;
  }

  .cta-title {
    font-size: 26px;
  }

  .cta-desc {
    font-size: 15px;
  }

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

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

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

  .sticky-inner {
    gap: 12px;
  }

  .sticky-text i {
    display: none;
  }

  .sticky-text span {
    font-size: 14px;
  }

  .sticky-text small {
    display: none;
  }

  .sticky-btn {
    padding: 10px 18px;
    font-size: 14px;
    white-space: nowrap;
  }

  .sticky-close {
    width: 30px;
    height: 30px;
  }

  .logo-text {
    font-size: 18px;
  }

  .page-hero h1 {
    font-size: 32px;
  }

  .hero-tag {
    font-size: 12px;
    padding: 5px 12px;
    margin-bottom: 18px;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .stat-num {
    font-size: 40px;
  }

  .stat-label {
    font-size: 13px;
  }

  .sticky-text span {
    font-size: 13px;
  }

  .sticky-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}

/* roulang page: category3 */
:root {
  --bg-deep: #0B0E14;
  --bg-elevated: #141925;
  --bg-card: #171D29;
  --border-subtle: rgba(255,255,255,0.08);
  --text-primary: #E8EDF7;
  --text-muted: #A0AABA;
  --primary: #FF2A6D;
  --primary-bright: #FF5C8A;
  --secondary: #05D9E8;
  --success: #3DD68C;
  --warning: #FFB84D;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-neon: 0 0 24px rgba(255,42,109,0.35);
  --shadow-cyan: 0 0 24px rgba(5,217,232,0.25);
  --container-max: 1200px;
  --header-h: 72px;
  --section-pad: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: 88px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(255,42,109,0.5);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--secondary);
  color: var(--secondary);
}

.btn-secondary:hover {
  background: rgba(5, 217, 232, 0.1);
  box-shadow: var(--shadow-cyan);
}

.btn-secondary:active {
  border-color: var(--secondary);
  transform: scale(0.98);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
  border-radius: 6px;
}

.btn-lg {
  padding: 14px 36px;
  font-size: 17px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(8, 11, 16, 0.98);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}

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

.logo-mark {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  border-radius: 10px;
  box-shadow: var(--shadow-neon);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

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

.nav-link {
  font-size: 16px;
  font-weight: 500;
  padding: 8px 2px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, text-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

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

.nav-link.active {
  color: var(--secondary);
  border-bottom-color: var(--secondary);
  text-shadow: 0 0 12px rgba(5, 217, 232, 0.6);
  background: linear-gradient(90deg, var(--primary), var(--secondary)) bottom/100% 2px no-repeat;
  border-bottom: none;
  padding-bottom: 8px;
}

.btn-nav {
  padding: 8px 20px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--secondary);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding-top: calc(var(--header-h) + 24px);
  padding-bottom: 8px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb-list a {
  transition: color 0.2s ease;
}

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

.breadcrumb-list .sep {
  color: rgba(255,255,255,0.3);
}

.breadcrumb-list .current {
  color: var(--text-primary);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 72px 0 88px;
  background: linear-gradient(135deg, rgba(11,14,20,0.92) 0%, rgba(11,14,20,0.75) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.hero-wrapper {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-copy {
  padding-right: 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255,42,109,0.12);
  border: 1px solid rgba(255,42,109,0.3);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-bright);
  margin-bottom: 20px;
}

.hero-badge i {
  font-size: 13px;
}

.page-hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 20px;
  background: linear-gradient(120deg, var(--text-primary) 30%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 32px;
}

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

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.hero-points span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-points i {
  color: var(--success);
  font-size: 14px;
}

.hero-visual {
  position: relative;
}

.hero-visual-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 0 40px rgba(5,217,232,0.12);
}

.hero-visual-frame img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.hero-visual-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,14,20,0.6) 0%, transparent 50%);
}

.hero-visual-tag {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(11, 14, 20, 0.82);
  border: 1px solid rgba(5,217,232,0.3);
  border-radius: 12px;
  padding: 10px 18px;
  backdrop-filter: blur(8px);
}

.hero-visual-tag i {
  color: var(--secondary);
  font-size: 20px;
}

.hero-visual-tag span {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.hero-visual-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--secondary);
  border-style: solid;
  z-index: 3;
}

.hero-visual-corner.tl { top: 14px; left: 14px; border-width: 2px 0 0 2px; border-radius: 4px 0 0 0; }
.hero-visual-corner.tr { top: 14px; right: 14px; border-width: 2px 2px 0 0; border-radius: 0 4px 0 0; }
.hero-visual-corner.bl { bottom: 14px; left: 14px; border-width: 0 0 2px 2px; border-radius: 0 0 0 4px; }
.hero-visual-corner.br { bottom: 14px; right: 14px; border-width: 0 2px 2px 0; border-radius: 0 0 4px 0; }

/* ===== Section Layout ===== */
.section {
  padding: var(--section-pad) 0;
}

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

.section-head.centered {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-head p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ===== Benefits Mixed Grid ===== */
.benefits-section {
  background: var(--bg-deep);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  position: relative;
  overflow: hidden;
}

.benefit-card:hover {
  border-color: var(--secondary);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-4px);
}

.benefit-card.main {
  grid-column: span 7;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.benefit-card.main .benefit-visual {
  border-radius: 12px;
  overflow: hidden;
  height: 240px;
}

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

.benefit-card.main:hover .benefit-visual img {
  transform: scale(1.04);
}

.benefit-card.stack {
  grid-column: span 5;
}

.benefit-card.stack.small {
  padding: 36px 32px;
}

.benefit-card.stack .benefit-body {
  padding: 8px 0;
}

.benefit-card.side {
  grid-column: span 5;
}

.benefit-card.side .benefit-visual {
  border-radius: 12px;
  overflow: hidden;
  height: 200px;
  margin-bottom: 20px;
}

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

.benefit-card.side:hover .benefit-visual img {
  transform: scale(1.04);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(255,42,109,0.1);
  border: 1px solid rgba(255,42,109,0.25);
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 18px;
}

.benefit-icon.cyan {
  background: rgba(5,217,232,0.1);
  border-color: rgba(5,217,232,0.25);
  color: var(--secondary);
}

.benefit-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.benefit-card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.benefit-list {
  margin-top: 12px;
}

.benefit-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.benefit-list li i {
  color: var(--success);
  font-size: 14px;
  margin-top: 5px;
  flex-shrink: 0;
}

.benefit-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--secondary);
  transition: gap 0.2s ease;
}

.benefit-link:hover {
  gap: 10px;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(5,217,232,0.4);
}

/* ===== Plans ===== */
.plans-section {
  background: var(--bg-elevated);
  position: relative;
}

.plans-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity: 0.06;
  pointer-events: none;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.plan-card:hover {
  border-color: rgba(255,42,109,0.4);
  box-shadow: var(--shadow-neon);
  transform: translateY(-4px);
}

.plan-card.popular {
  border-color: var(--primary);
  box-shadow: var(--shadow-neon);
}

.plan-card.popular::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 100px;
  box-shadow: var(--shadow-neon);
}

.plan-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
}

.plan-price .currency {
  font-size: 18px;
  color: var(--text-muted);
}

.plan-price .amount {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-price .period {
  font-size: 14px;
  color: var(--text-muted);
}

.plan-features {
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.plan-features li i {
  color: var(--success);
  font-size: 13px;
  margin-top: 5px;
  flex-shrink: 0;
}

.plan-card .btn {
  width: 100%;
}

/* ===== Process ===== */
.process-section {
  background: var(--bg-deep);
}

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

.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.process-step:hover {
  border-color: var(--secondary);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-4px);
}

.step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 1px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-num::before {
  content: '';
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--secondary), transparent);
  border-radius: 2px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.process-step p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {
  padding: 12px 8px;
}

.stat-number {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(255,42,109,0.2);
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===== Testimonials ===== */
.testimonials-section {
  background: var(--bg-deep);
}

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

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
  border-color: rgba(255,42,109,0.3);
  box-shadow: var(--shadow-neon);
}

.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 8px;
  left: 24px;
  font-size: 72px;
  font-family: Georgia, serif;
  color: rgba(255,42,109,0.2);
  line-height: 1;
}

.testimonial-text {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-left: 16px;
  position: relative;
}

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

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-bright));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.testimonial-author .author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.testimonial-author .author-role {
  font-size: 13px;
  color: var(--text-muted);
}

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

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: start;
}

.faq-heading {
  position: sticky;
  top: calc(var(--header-h) + 32px);
}

.faq-heading h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 16px;
}

.faq-heading p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 28px;
}

.faq-heading .btn {
  margin-top: 4px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(255,255,255,0.14);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(255,42,109,0.08);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: color 0.2s ease;
}

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

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

.faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  font-size: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(255,42,109,0.15);
  border-color: var(--primary);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ===== CTA ===== */
.cta-section {
  padding: 96px 0;
  background: var(--bg-deep);
}

.cta-panel {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 64px 56px;
  background: linear-gradient(135deg, rgba(11,14,20,0.92) 0%, rgba(11,14,20,0.8) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border: 1px solid transparent;
  background-clip: padding-box;
  overflow: hidden;
  text-align: center;
}

.cta-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: linear-gradient(135deg, var(--primary), transparent 40%, transparent 60%, var(--secondary));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.cta-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 18px;
}

.cta-content p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: #080B10;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--secondary)) 1;
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.8fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.brand-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-top: 12px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

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

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.footer-contact li i {
  color: var(--secondary);
  margin-top: 4px;
  width: 16px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Bottom Fixed Bar ===== */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(11, 14, 20, 0.96);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  transform: translateY(0);
  transition: transform 0.4s ease;
}

.bottom-bar.hidden {
  transform: translateY(100%);
}

.bottom-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.bottom-bar-text {
  font-size: 15px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.bottom-bar-text i {
  color: var(--warning);
  font-size: 18px;
}

.bottom-bar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bottom-bar-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 14px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.bottom-bar-close:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(255,42,109,0.1);
}

/* ===== Responsive ===== */
@media (max-width: 1199px) {
  :root {
    --section-pad: 80px;
  }

  .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  .page-hero h1 {
    font-size: 44px;
  }

  .benefit-card.main {
    grid-column: span 12;
  }

  .benefit-card.stack {
    grid-column: span 6;
  }

  .benefit-card.side {
    grid-column: span 6;
  }

  .plans-grid {
    gap: 20px;
  }

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

@media (max-width: 991px) {
  .main-nav {
    gap: 20px;
  }

  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-copy {
    padding-right: 0;
  }

  .hero-visual-frame img {
    height: 300px;
  }

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

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

  .faq-heading {
    position: static;
  }

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

  .plans-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
}

@media (max-width: 767px) {
  :root {
    --section-pad: 60px;
    --header-h: 60px;
  }

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

  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(11, 14, 20, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 16px 32px;
    gap: 4px;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav .nav-link {
    font-size: 17px;
    padding: 14px 8px;
    width: 100%;
    border-bottom: none;
  }

  .main-nav .nav-link.active {
    border-bottom: none;
    padding-bottom: 14px;
  }

  .btn-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .breadcrumb {
    padding-top: calc(var(--header-h) + 16px);
  }

  .page-hero {
    padding: 48px 0 64px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 17px;
  }

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

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

  .hero-visual-frame img {
    height: 240px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .section-head p {
    font-size: 16px;
  }

  .benefit-card.main {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .benefit-card.main .benefit-visual {
    height: 200px;
  }

  .benefit-card.stack,
  .benefit-card.side {
    grid-column: span 12;
  }

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

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

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

  .stat-number {
    font-size: 36px;
  }

  .cta-panel {
    padding: 48px 24px;
  }

  .cta-content h2 {
    font-size: 28px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .bottom-bar-text {
    font-size: 13px;
  }

  .bottom-bar-inner {
    flex-wrap: wrap;
    gap: 10px;
  }

  .bottom-bar-actions .btn {
    padding: 8px 14px;
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .page-hero h1 {
    font-size: 30px;
  }

  .hero-visual-tag {
    left: 12px;
    bottom: 12px;
    padding: 8px 12px;
    font-size: 13px;
  }

  .stat-number {
    font-size: 30px;
  }

  .plan-card {
    padding: 28px 20px;
  }

  .faq-question {
    font-size: 15px;
    padding: 16px 18px;
  }

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

  .faq-item.active .faq-answer {
    padding-bottom: 16px;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 16px;
  }
}