/* roulang page: index */
:root {
  --primary: #e0245e;
  --primary-dark: #b8184a;
  --primary-light: #ff6b9a;
  --accent: #7b2ff7;
  --accent-light: #a78bfa;
  --dark: #0f0f1a;
  --dark-2: #1a1a2e;
  --dark-3: #242438;
  --text: #e8e8f0;
  --text-light: #a0a0b8;
  --text-dim: #6c6c82;
  --border: #2e2e48;
  --bg: #0a0a14;
  --bg-card: #14142a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-hover: 0 12px 40px rgba(224,36,94,0.25);
  --transition: all 0.3s ease;
  --container: 1200px;
  --gradient: linear-gradient(135deg, #e0245e 0%, #7b2ff7 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

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

/* ===== Top Bar ===== */
.topbar {
  background: var(--dark-2);
  border-bottom: 1px solid var(--border);
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-light);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-left span {
  margin-right: 18px;
}

.topbar-right a {
  margin-left: 16px;
  color: var(--text-light);
}

.topbar-right a:hover {
  color: var(--primary-light);
}

/* ===== Header / Nav ===== */
.site-header {
  background: rgba(15, 15, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 999;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  flex-shrink: 0;
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}

.logo-text span {
  color: var(--primary-light);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-light);
  position: relative;
}

.main-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}

.main-nav a.active {
  color: var(--primary-light);
  background: rgba(224,36,94,0.12);
  font-weight: 600;
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.btn-search {
  background: transparent;
  color: var(--text-light);
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}

.btn-search:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--dark-2);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
  }

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

  .main-nav a {
    padding: 14px 16px;
    width: 100%;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(224,36,94,0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(224,36,94,0.5);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(224,36,94,0.06);
}

.btn-lg {
  padding: 16px 42px;
  font-size: 17px;
}

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

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0a0a14 0%, #1a0a1e 50%, #120a2a 100%);
  padding: 90px 0 110px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(224,36,94,0.3) 0%, transparent 60%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(123,47,247,0.25) 0%, transparent 60%);
  border-radius: 50%;
}

.hero-background {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(224,36,94,0.15);
  border: 1px solid rgba(224,36,94,0.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 900;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero h1 .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
}

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

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
}

.hero-stat .label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
}

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

.hero-card {
  background: rgba(20, 20, 42, 0.8);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-card-img {
  position: relative;
  height: 320px;
  overflow: hidden;
}

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

.hero-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,20,0.9) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 68px;
  height: 68px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
  box-shadow: 0 8px 32px rgba(224,36,94,0.5);
  cursor: pointer;
  transition: var(--transition);
}

.play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.hero-card-info {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
}

.hero-card-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.hero-card-info p {
  font-size: 13px;
  color: var(--text-dim);
}

@media (max-width: 900px) {
  .hero {
    padding: 60px 0 80px;
  }
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero h1 {
    font-size: 36px;
  }
}

/* ===== Section Global ===== */
.section {
  padding: 80px 0;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 20px;
}

.section-title-wrap {
  max-width: 600px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-light);
  background: rgba(224,36,94,0.1);
  border: 1px solid rgba(224,36,94,0.2);
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  margin-top: 10px;
  line-height: 1.6;
}

.section-link {
  color: var(--primary-light);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.section-link:hover {
  gap: 10px;
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .section-title {
    font-size: 28px;
  }
}

/* ===== Category Cards ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
}

.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  height: 160px;
  display: flex;
  align-items: flex-end;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(224,36,94,0.4);
}

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.category-card:hover img {
  transform: scale(1.08);
}

.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,20,0.85) 0%, rgba(10,10,20,0.2) 60%, transparent 100%);
  z-index: 1;
}

.category-card-content {
  position: relative;
  z-index: 2;
  padding: 18px;
  width: 100%;
}

.category-card-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.category-card-content p {
  font-size: 12px;
  color: var(--text-light);
  opacity: 0.8;
}

.category-card .count {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-light);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  z-index: 3;
}

/* ===== Video / Content Cards ===== */
.content-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.content-card-media {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}

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

.content-card:hover .content-card-media img {
  transform: scale(1.06);
}

.content-card-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  z-index: 2;
}

.content-card-duration {
  position: absolute;
  bottom: .content-card-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
  z-index: 2;
}

.content-card-body {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.content-card-body h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 42px;
}

.content-card-body h3 a:hover {
  color: var(--primary-light);
}

.content-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: auto;
  border-top: 1px solid rgba(255,255,255,0.04);
  padding-top: 10px;
}

.content-card-meta .cat {
  color: var(--primary-light);
  font-weight: 600;
}

/* ===== Featured Section ===== */
.featured-section {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.featured-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.featured-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.featured-content {
  padding: 20px 0;
}

.featured-content h3 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 16px;
}

.featured-content p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
}

.feature-list .check {
  width: 22px;
  height: 22px;
  background: rgba(224,36,94,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--primary-light);
  flex-shrink: 0;
  margin-top: 2px;
}

@media (max-width: 768px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .featured-media img {
    height: 260px;
  }
}

/* ===== Steps / How to ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(224,36,94,0.35);
  box-shadow: var(--shadow);
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 18px;
  box-shadow: 0 6px 20px rgba(224,36,94,0.3);
}

.step-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

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

/* ===== Devices / Compatibility ===== */
.platform-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.platform-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}

.platform-item:hover {
  border-color: var(--primary);
  background: rgba(224,36,94,0.05);
}

.platform-item .icon {
  font-size: 22px;
}

/* ===== Testimonials ===== */
.testimonial-section {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

@media (max-width: 768px) {
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(224,36,94,0.3);
  transform: translateY(-3px);
}

.testimonial-stars {
  color: #ffc107;
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

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

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

.testimonial-author .name {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.testimonial-author .role {
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== FAQ ===== */
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 26px;
  margin-bottom: 14px;
  transition: var(--transition);
  cursor: pointer;
}

.faq-item:hover {
  border-color: rgba(224,36,94,0.3);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  gap: 20px;
}

.faq-question .icon {
  width: 24px;
  height: 24px;
  background: rgba(224,36,94,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.faq-answer {
  display: none;
  padding-top: 14px;
  margin-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

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

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,20,0.92) 0%, rgba(20,10,30,0.85) 100%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

@media (max-width: 768px) {
  .cta-section {
    padding: 56px 0;
  }
  .cta-inner h2 {
    font-size: 28px;
  }
}

/* ===== News / CMS List ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .news-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.news-empty {
  grid-column: 1 / -1;
  background: var(--dark-2);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-dim);
  font-size: 15px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

.footer-brand .logo-text {
  font-size: 20px;
}

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

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--text-light);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

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

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

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

@media (max-width: 520px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== General utilities ===== */
.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.pattern-bg {
  background-color: var(--dark-2);
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease both;
}

/* ===== Responsive refinements ===== */
@media (max-width: 768px) {
  .hero-stats {
    gap: 20px;
  }
  .hero-stat .num {
    font-size: 22px;
  }
  .btn-lg {
    padding: 14px 30px;
    font-size: 15px;
  }
}

/* ===== Focus & Active states ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 3px;
}

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

.logo:active,
.main-nav a:active {
  opacity: 0.8;
}

/* ===== Back to top ===== */
.back-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  z-index: 99;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* roulang page: category4 */
:root {
  --primary: #c9184a;
  --primary-dark: #a4133c;
  --primary-light: #ff4d6d;
  --accent: #ffccd5;
  --bg: #fff5f6;
  --bg-alt: #2b1a1a;
  --bg-light: #ffffff;
  --text: #262626;
  --text-light: #6b6b6b;
  --border: #f0d4da;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(201, 24, 74, 0.08);
  --shadow-lg: 0 16px 40px rgba(201, 24, 74, 0.15);
  --transition: all 0.3s ease;
  --container-width: 1200px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

::selection {
  background: var(--primary);
  color: #fff;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(240, 212, 218, 0.6);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}

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

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 16px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(201, 24, 74, 0.3);
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 1px;
}

.logo-text span {
  color: var(--primary-light);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: var(--transition);
}

.main-nav a:hover {
  background: rgba(201, 24, 74, 0.08);
  color: var(--primary);
}

.main-nav a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(201, 24, 74, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-search {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text);
  border-radius: 10px;
  background: rgba(201, 24, 74, 0.06);
  transition: var(--transition);
}

.btn-search:hover {
  background: rgba(201, 24, 74, 0.12);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 6px;
  border-radius: 10px;
  background: rgba(201, 24, 74, 0.06);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    padding: 16px 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
    gap: 8px;
    align-items: stretch;
  }

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

  .main-nav a {
    padding: 12px 16px;
    text-align: center;
    font-size: 16px;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
  padding: 120px 0 160px;
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(43, 26, 26, 0.72) 0%, rgba(43, 26, 26, 0.55) 50%, rgba(43, 26, 26, 0.82) 100%);
}

.page-hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-content {
  max-width: 780px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 30px;
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}

.hero-content h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 2px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-content p {
  font-size: 19px;
  line-height: 1.8;
  margin-bottom: 36px;
  opacity: 0.95;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 30px;
  transition: var(--transition);
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 8px 24px rgba(201, 24, 74, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(201, 24, 74, 0.5);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
}

.stat span {
  font-size: 14px;
  opacity: 0.8;
  letter-spacing: 1px;
}

@media (max-width: 768px) {
  .page-hero {
    padding: 80px 0 100px;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat strong {
    font-size: 28px;
  }
}

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

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

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }
}

/* ===== Section通用 ===== */
.section {
  padding: 90px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(201, 24, 74, 0.08);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 30px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-head p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

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

/* ===== Features ===== */
.features {
  background: var(--bg-light);
}

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

.feature-card {
  background: var(--bg-light);
  padding: 36px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(201, 24, 74, 0.1), rgba(255, 77, 109, 0.1));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* ===== Featured ===== */
.featured {
  background: var(--bg);
}

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

.video-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

.video-card:hover .video-thumb img {
  transform: scale(1.06);
}

.video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(43, 26, 26, 0.3) 0%, transparent 50%);
}

.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 4px 12px;
  background: rgba(201, 24, 74, 0.9);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

.video-duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 2;
  padding: 3px 10px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 12px;
  border-radius: 6px;
  backdrop-filter: blur(4px);
}

.video-info {
  padding: 18px 20px;
}

.video-info h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
  color: var(--text);
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
}

.video-meta .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

@media (max-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* ===== Scenes ===== */
.scenes {
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}

.scenes::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(201, 24, 74, 0.2), transparent 70%);
}

.scenes .section-tag {
  background: rgba(255, 255, 255, 0.1);
  color: #ffccd5;
}

.scenes .section-head h2 {
  color: #fff;
}

.scenes .section-head p {
  color: rgba(255, 255, 255, 0.7);
}

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

.scene-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  height: 260px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.scene-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.scene-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(43, 26, 26, 0.75) 0%, rgba(43, 26, 26, 0) 60%);
}

.scene-content {
  position: relative;
  z-index: 2;
  padding: 28px;
}

.scene-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.scene-content p {
  font-size: 14px;
  opacity: 0.85;
}

@media (max-width: 768px) {
  .scenes-grid {
    grid-template-columns: 1fr;
  }

  .scene-card {
    height: 220px;
  }
}

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

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

.testimonial-card {
  background: var(--bg);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: #ffb700;
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

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

.testimonial-name {
  font-weight: 600;
  font-size: 14px;
}

.testimonial-role {
  font-size: 12px;
  color: var(--text-light);
}

@media (max-width: 1024px) {
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

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

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

.faq-item {
  background: var(--bg-light);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(201, 24, 74, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  padding: 0 24px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  padding: 0 24px 20px;
  max-height: 300px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 100px 0;
  background: url('/assets/images/backpic/back-2.webp') no-repeat center center / cover;
  position: relative;
  color: #fff;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(43, 26, 26, 0.85), rgba(201, 24, 74, 0.7));
}

.cta-section .container {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  max-width: 620px;
  margin: 0 auto 38px;
  opacity: 0.92;
}

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

@media (max-width: 768px) {
  .cta-section {
    padding: 70px 0;
  }

  .cta-section h2 {
    font-size: 30px;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-alt);
  color: rgba(255, 255, 255, 0.75);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  color: #fff;
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand .logo-text span {
  color: var(--primary-light);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 14px;
  max-width: 320px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

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

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

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

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

/* ===== Focus状态 ===== */
a:focus,
button:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (max-width: 520px) {
  .btn {
    width: 100%;
  }
}

/* roulang page: category2 */
:root {
  --primary: #ff2d78;
  --primary-dark: #e0125f;
  --primary-light: #ff6b9c;
  --secondary: #7c5cff;
  --bg: #0b0b12;
  --bg-soft: #12121d;
  --card: #171726;
  --card-hover: #1e1e33;
  --border: #252536;
  --border-hover: #383854;
  --text: #f0f0f5;
  --text-weak: #9a9ab0;
  --text-muted: #6b6b84;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 36px rgba(0, 0, 0, .4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, .5);
  --transition: all .3s ease;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== Header ========== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(11, 11, 18, .88); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255, 255, 255, .06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 15px; color: #fff; box-shadow: 0 4px 15px rgba(255, 45, 120, .4); }
.logo-text { font-size: 20px; font-weight: 800; letter-spacing: .5px; color: #fff; }
.logo-text span { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-weak); transition: var(--transition); }
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.main-nav a.active { color: #fff; background: linear-gradient(135deg, rgba(255, 45, 120, .22), rgba(124, 92, 255, .22)); box-shadow: inset 0 0 0 1px rgba(255, 45, 120, .35); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.btn-search { width: 38px; height: 38px; border-radius: 50%; background: rgba(255, 255, 255, .06); font-size: 18px; color: var(--text-weak); display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.btn-search:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 38px; height: 38px; border-radius: 10px; background: rgba(255, 255, 255, .06); padding: 0 10px; }
.nav-toggle span { display: block; height: 2px; border-radius: 2px; background: #fff; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Hero ========== */
.hero { position: relative; padding: 140px 0 80px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; z-index: 0; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11, 11, 18, .96) 30%, rgba(11, 11, 18, .72) 60%, rgba(255, 45, 120, .25) 100%); }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-copy { padding-right: 20px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 45, 120, .15); border: 1px solid rgba(255, 45, 120, .35); color: var(--primary-light); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px; margin-bottom: 24px; letter-spacing: .5px; }
.hero-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 8px var(--primary); }
.hero h1 { font-size: 48px; line-height: 1.2; font-weight: 800; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--primary), var(--secondary)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 17px; color: var(--text-weak); margin-bottom: 36px; max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 999px; font-size: 15px; font-weight: 600; transition: var(--transition); border: 1px solid transparent; }
.btn:focus-visible { outline: 3px solid rgba(255, 45, 120, .4); outline-offset: 2px; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; box-shadow: 0 8px 24px rgba(255, 45, 120, .35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 45, 120, .5); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(255, 45, 120, .3); }
.btn-ghost { background: rgba(255, 255, 255, .07); color: #fff; border-color: rgba(255, 255, 255, .15); backdrop-filter: blur(8px); }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); transform: translateY(-2px); }
.hero-visual { position: relative; height: 460px; }
.hero-card { position: absolute; border-radius: var(--radius); box-shadow: var(--shadow-lg); border: 1px solid rgba(255, 255, 255, .08); object-fit: cover; transition: var(--transition); }
.hero-card:hover { transform: scale(1.03) rotate(0deg) translateY(-6px) !important; z-index: 5; box-shadow: 0 30px 60px rgba(0, 0, 0, .65); }
.card-top { width: 220px; height: 320px; top: 0; right: 40px; transform: rotate(6deg); z-index: 1; }
.card-mid { width: 200px; height: 290px; top: 65px; left: 20px; transform: rotate(-8deg); z-index: 2; border-color: rgba(255, 45, 120, .15); }
.card-bottom { width: 210px; height: 300px; bottom: 0; right: 80px; transform: rotate(3deg); z-index: 3; border-color: rgba(124, 92, 255, .2); }
.hero-stats { position: relative; z-index: 2; margin-top: 64px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .08); border-radius: var(--radius); padding: 24px 32px; backdrop-filter: blur(12px); }
.stat-item { text-align: center; }
.stat-item strong { display: block; font-size: 28px; font-weight: 800; background: linear-gradient(135deg, #fff, var(--primary-light)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-item span { font-size: 13px; color: var(--text-weak); margin-top: 4px; display: block; }

/* ========== Section ========== */
.section { padding: 90px 0; }
.section.alt { background: linear-gradient(180deg, var(--bg-soft), var(--bg)); }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--primary-light); background: rgba(255, 45, 120, .1); border: 1px solid rgba(255, 45, 120, .25); padding: 6px 16px; border-radius: 999px; margin-bottom: 16px; }
.section-title { font-size: 36px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 16px; line-height: 1.25; }
.section-subtitle { color: var(--text-weak); font-size: 16px; }

/* ========== Features ========== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 28px; transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--secondary)); opacity: 0; transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); border-color: var(--border-hover); box-shadow: var(--shadow); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 54px; height: 54px; border-radius: 14px; background: linear-gradient(135deg, rgba(255, 45, 120, .18), rgba(124, 92, 255, .18)); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; color: var(--primary-light); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.65; }

/* ========== Types ========== */
.types-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.type-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.type-card:hover { transform: translateY(-6px); border-color: var(--border-hover); box-shadow: var(--shadow-lg); }
.type-card .type-img { position: relative; aspect-ratio: 3/4; overflow: hidden; }
.type-card .type-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.type-card:hover .type-img img { transform: scale(1.08); }
.type-card .type-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(11, 11, 18, .75) 100%); }
.type-body { position: absolute; bottom: 0; left: 0; right: 0; padding: 20px; z-index: 2; }
.type-name { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.type-desc { font-size: 13px; color: var(--text-weak); line-height: 1.5; }
.type-tag { position: absolute; top: 14px; right: 14px; z-index: 2; background: rgba(11, 11, 18, .7); border: 1px solid rgba(255, 255, 255, .15); backdrop-filter: blur(10px); padding: 4px 12px; font-size: 12px; color: #fff; border-radius: 999px; }

/* ========== Showcase ========== */
.showcase-list { display: flex; flex-direction: column; gap: 24px; max-width: 960px; margin: 0 auto; }
.showcase-item { display: grid; grid-template-columns: 280px 1fr; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.showcase-item:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow); }
.showcase-img { position: relative; overflow: hidden; min-height: 180px; }
.showcase-img img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; transition: transform .5s ease; }
.showcase-item:hover .showcase-img img { transform: scale(1.05); }
.showcase-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 70%, rgba(11, 11, 18, .5)); }
.showcase-body { padding: 28px 32px; display: flex; flex-direction: column; justify-content: center; }
.showcase-meta { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.showcase-meta span { font-size: 12px; background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .08); padding: 3px 10px; border-radius: 999px; color: var(--text-weak); }
.showcase-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.showcase-desc { font-size: 14px; color: var(--text-weak); line-height: 1.65; }

/* ========== Scenes ========== */
.scenes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scene-card { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 260px; display: flex; align-items: flex-end; border: 1px solid var(--border); transition: var(--transition); }
.scene-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--border-hover); }
.scene-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.scene-card:hover img { transform: scale(1.06); }
.scene-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(11, 11, 18, .88) 100%); }
.scene-body { position: relative; z-index: 2; padding: 24px; width: 100%; }
.scene-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.scene-body p { font-size: 13px; color: var(--text-weak); line-height: 1.6; }

/* ========== Steps ========== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
.step { text-align: center; position: relative; padding: 40px 28px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.step:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow); }
.step-num { width: 56px; height: 56px; margin: 0 auto 20px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800; color: #fff; box-shadow: 0 8px 20px rgba(255, 45, 120, .35); }
.step h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.step p { font-size: 14px; color: var(--text-weak); line-height: 1.65; }
.step::before { content: ''; position: absolute; top: 50%; right: -32px; width: 64px; height: 1px; background: repeating-linear-gradient(90deg, var(--border) 0 6px, transparent 6px 12px); z-index: 1; }
.step:last-child::before { display: none; }

/* ========== FAQ ========== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border-hover); }
.faq-item details[open] { border-color: rgba(255, 45, 120, .3); }
.faq-item summary { padding: 20px 24px; font-size: 16px; font-weight: 600; cursor: pointer; position: relative; padding-right: 56px; list-style: none; transition: var(--transition); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); font-size: 22px; color: var(--primary); font-weight: 400; transition: var(--transition); }
.faq-item details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item details[open] summary { color: var(--primary-light); }
.faq-answer { padding: 0 24px 22px; font-size: 14px; color: var(--text-weak); line-height: 1.7; border-top: 1px solid rgba(255, 255, 255, .05); margin: 0 16px 16px; padding-top: 16px; }

/* ========== CTA ========== */
.cta-section { padding: 60px 0 90px; }
.cta-box { position: relative; background: linear-gradient(135deg, rgba(255, 45, 120, .95), rgba(124, 92, 255, .9)); border-radius: 24px; padding: 60px 40px; text-align: center; overflow: hidden; color: #fff; }
.cta-box::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; border-radius: 50%; background: rgba(255, 255, 255, .1); }
.cta-box::after { content: ''; position: absolute; bottom: -60%; left: -10%; width: 300px; height: 300px; border-radius: 50%; background: rgba(0, 0, 0, .1); }
.cta-title { font-size: 34px; font-weight: 800; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-sub { font-size: 16px; opacity: .9; margin-bottom: 32px; position: relative; z-index: 2; }
.cta-btn { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--primary-dark); padding: 15px 38px; border-radius: 999px; font-weight: 700; font-size: 16px; box-shadow: 0 8px 30px rgba(0, 0, 0, .2); position: relative; z-index: 2; transition: var(--transition); }
.cta-btn:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 12px 36px rgba(0, 0, 0, .3); }
.cta-btn:active { transform: scale(.98); }

/* ========== Footer ========== */
.site-footer { background: #0a0a10; border-top: 1px solid var(--border); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-brand p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-top: 14px; max-width: 300px; }
.footer-title { font-size: 15px; font-weight: 700; margin-bottom: 18px; color: #fff; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: var(--text-weak); transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); padding-left: 6px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .06); font-size: 13px; color: var(--text-muted); flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 40px; }
  .hero-inner { gap: 40px; }
  .hero-visual { height: 380px; }
  .card-top { width: 180px; height: 270px; right: 20px; }
  .card-mid { width: 160px; height: 240px; left: 0; }
  .card-bottom { width: 175px; height: 255px; right: 55px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .steps-grid { gap: 20px; }
  .step::before { display: none; }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .main-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: rgba(11, 11, 18, .98); flex-direction: column; padding: 16px 24px; gap: 6px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; text-align: center; padding: 12px; font-size: 15px; }
  .nav-toggle { display: flex; }
  .hero { padding: 100px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 30px; }
  .hero-copy { text-align: center; padding-right: 0; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { height: 300px; max-width: 420px; margin: 0 auto; width: 100%; }
  .card-top { width: 150px; height: 220px; right: 20%; }
  .card-mid { width: 130px; height: 195px; left: 10%; }
  .card-bottom { width: 140px; height: 210px; right: 30%; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); padding: 20px; gap: 14px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .features-grid, .types-grid, .scenes-grid, .steps-grid { grid-template-columns: 1fr; }
  .showcase-item { grid-template-columns: 1fr; }
  .showcase-img { min-height: 200px; }
  .step::before { display: none; }
  .steps-grid { gap: 20px; }
  .cta-box { padding: 40px 24px; }
  .cta-title { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 31px; }
  .hero-subtitle { font-size: 15px; }
  .hero-visual { height: 240px; }
  .card-top { width: 120px; height: 180px; right: 10%; }
  .card-mid { width: 105px; height: 158px; left: 5%; }
  .card-bottom { width: 115px; height: 175px; right: 20%; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .stat-item strong { font-size: 22px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .section-title { font-size: 24px; }
  .section-tag { font-size: 11px; padding: 4px 12px; }
  .feature-card { padding: 28px 20px; }
  .showcase-body { padding: 20px; }
  .showcase-title { font-size: 17px; }
  .type-body { padding: 16px; }
  .type-name { font-size: 17px; }
  .cta-title { font-size: 22px; }
  .cta-sub { font-size: 14px; }
  .footer-grid { gap: 22px; }
}

/* roulang page: category5 */
:root {
  --primary: #f43f5e;
  --primary-dark: #c81d3f;
  --primary-glow: rgba(244, 63, 94, 0.35);
  --accent: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.15);
  --bg: #0c0a12;
  --bg-soft: #14111f;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.09);
  --text: #f3f0f7;
  --text-mild: #c7c2d6;
  --text-muted: #8b869e;
  --border: rgba(255, 255, 255, 0.08);
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.30);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 40px;
  --sp-5: 64px;
  --sp-6: 96px;
  --fs-display: clamp(2.4rem, 5vw, 4.2rem);
  --fs-h2: clamp(1.7rem, 3vw, 2.6rem);
  --fs-h3: clamp(1.2rem, 2vw, 1.6rem);
  --fs-body: 1rem;
  --fs-sm: 0.875rem;
  --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.container { width: min(1200px, 92%); margin: 0 auto; }
::selection { background: var(--primary); color: #fff; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 10, 18, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 15px;
  box-shadow: 0 0 18px var(--primary-glow);
}
.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-text span { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-mild);
  transition: color .25s, background .25s, transform .25s;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--text); background: var(--surface); }
.main-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 16px var(--primary-glow);
}
.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-search {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--text-mild);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all .25s;
}
.btn-search:hover { color: var(--text); border-color: var(--primary); background: var(--surface-hover); }
.nav-toggle {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  display: block;
  transition: all .3s;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(100deg, rgba(10, 8, 16, 0.92) 0%, rgba(10, 8, 16, 0.62) 45%, rgba(10, 8, 16, 0.25) 100%), url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
  padding: 80px 0;
}
.hero-body { position: relative; z-index: 2; max-width: 640px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #ffd38a;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: 0.01em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-mild);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 8px 26px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px var(--primary-glow); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--primary); background: rgba(255, 255, 255, 0.1); transform: translateY(-2px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.hero-points li {
  list-style: none;
  font-size: 0.95rem;
  color: var(--text-mild);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-points li::before {
  content: "✔";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
}
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.8rem;
  z-index: 2;
}
.hero-scroll::after {
  content: "";
  width: 20px;
  height: 32px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}
.hero-scroll::before {
  content: "";
  width: 3px;
  height: 8px;
  border-radius: 2px;
  background: var(--primary);
  position: absolute;
  top: 4px;
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

.section { padding: var(--sp-6) 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-5);
}
.section-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: var(--fs-h2);
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.25;
}
.section-head p { color: var(--text-muted); font-size: 1.02rem; margin: 0; }

.features { background: var(--bg-soft); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: transform .3s, border-color .3s, background .3s, box-shadow .3s;
  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(--accent));
  opacity: 0;
  transition: opacity .3s;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(244, 63, 94, 0.4); background: var(--surface-hover); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.18), rgba(245, 158, 11, 0.13));
  border: 1px solid rgba(244, 63, 94, 0.25);
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 1.18rem; font-weight: 700; margin: 0 0 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

.showcase { background: var(--bg); }
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.video-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.video-card:hover { transform: translateY(-6px); border-color: rgba(244, 63, 94, 0.4); box-shadow: var(--shadow-lg); }
.video-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.55));
}
.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  display: inline-flex;
  gap: 6px;
}
.video-badge span {
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}
.video-badge .hot { background: var(--primary); color: #fff; }
.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(244, 63, 94, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  z-index: 2;
  box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.5);
  transition: transform .3s, box-shadow .3s;
}
.video-card:hover .video-play { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 0 14px rgba(244, 63, 94, 0.2); }
.video-duration {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 2;
  background: rgba(0, 0, 0, 0.6);
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 8px;
  color: #fff;
}
.video-info { padding: 20px; }
.video-info h3 { font-size: 1.08rem; font-weight: 700; margin: 0 0 8px; }
.video-info p { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 14px; line-height: 1.6; }
.video-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.scenes { background: var(--bg-soft); }
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.scene-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.scene-card:hover { transform: translateY(-5px); border-color: rgba(245, 158, 11, 0.4); box-shadow: var(--shadow-lg); }
.scene-card img { width: 100%; height: 150px; object-fit: cover; }
.scene-body { padding: 20px; }
.scene-body h3 { font-size: 1.05rem; font-weight: 700; margin: 0 0 8px; }
.scene-body p { color: var(--text-muted); font-size: 0.85rem; margin: 0; }

.stats {
  background: linear-gradient(rgba(12, 10, 18, 0.88), rgba(12, 10, 18, 0.88)), url('/assets/images/backpic/back-3.webp') no-repeat center center / cover fixed;
  padding: var(--sp-6) 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}
.stat-item { padding: 20px; }
.stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}
.stat-label { color: var(--text-muted); font-size: 0.95rem; margin-top: 8px; }

.steps { background: var(--bg); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 38px 26px 28px;
  text-align: center;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.step-card:hover { transform: translateY(-5px); border-color: rgba(244, 63, 94, 0.35); box-shadow: var(--shadow-lg); }
.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 6px rgba(244, 63, 94, 0.15);
  font-size: 1rem;
}
.step-card h3 { font-size: 1.12rem; font-weight: 700; margin: 0 0 10px; }
.step-card p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }

.faq { background: var(--bg-soft); }
.faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item:hover { border-color: rgba(244, 63, 94, 0.35); box-shadow: var(--shadow-sm); }
.faq-item details { padding: 0; }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  line-height: 1.5;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface-hover);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-mild);
  transition: transform .3s, background .3s, color .3s;
}
.faq-item details[open] summary::after {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-body { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.95rem; }
.faq-body p { margin: 0 0 10px; }
.faq-body p:last-child { margin-bottom: 0; }

.cta {
  position: relative;
  background: linear-gradient(100deg, rgba(12, 10, 18, 0.94), rgba(12, 10, 18, 0.7)), url('/assets/images/backpic/back-2.webp') no-repeat center center / cover;
  text-align: center;
  padding: var(--sp-6) 0;
}
.cta-inner { max-width: 700px; margin: 0 auto; }
.cta-inner h2 { font-size: var(--fs-h2); font-weight: 800; margin: 0 0 14px; }
.cta-inner p { color: var(--text-mild); font-size: 1.05rem; margin: 0 0 32px; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; }

.site-footer {
  background: #08060e;
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; margin: 12px 0 0; max-width: 260px; }
.footer-title { font-size: 1rem; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: color .25s, padding-left .25s; }
.footer-links a:hover { color: var(--primary); padding-left: 5px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-bottom a { color: var(--text-mild); }
.footer-bottom a:hover { color: var(--primary); }

@media (max-width: 1024px) {
  .features-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(12, 10, 18, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 6%;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s, transform .3s;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    text-align: center;
  }
  .nav-toggle { display: flex; }
}
@media (max-width: 768px) {
  :root { --sp-6: 56px; --sp-5: 40px; --sp-4: 28px; }
  .hero { min-height: auto; padding: 70px 0 70px; }
  .hero h1 { font-size: 2.3rem; }
  .hero-sub { font-size: 1rem; }
  .hero-points { gap: 12px; flex-direction: column; }
  .steps-grid { grid-template-columns: 1fr; }
  .section-head p { font-size: 0.95rem; }
}
@media (max-width: 520px) {
  .container { width: 90%; }
  .header-inner { gap: 10px; }
  .logo-text { font-size: 1.12rem; }
  .logo-icon { width: 32px; height: 32px; font-size: 13px; }
  .features-grid, .showcase-grid, .scenes-grid, .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .stats { background-attachment: scroll; }
}

/* roulang page: category3 */
:root {
  --primary: #ff2d5f;
  --primary-dark: #e01b4f;
  --accent: #ff7aa5;
  --bg: #0c0c14;
  --bg-alt: #12121e;
  --card-bg: #171726;
  --text: #f0f0f6;
  --text-muted: #9898b0;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 14px 44px rgba(0, 0, 0, 0.45);
  --transition: all 0.3s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius);
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
ul {
  list-style: none;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 110px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(255, 45, 95, 0.1);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -1px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 999px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 30px rgba(255, 45, 95, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(255, 45, 95, 0.5);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255, 45, 95, 0.06);
}
.btn-lg {
  padding: 16px 42px;
  font-size: 17px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 12, 20, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  box-shadow: 0 4px 16px rgba(255, 45, 95, 0.4);
}
.logo-text span:last-child {
  color: var(--primary);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 9px 18px;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}
.main-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}
.main-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 18px rgba(255, 45, 95, 0.35);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.btn-search {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.btn-search:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.page-hero {
  position: relative;
  background: linear-gradient(rgba(10, 10, 18, 0.82), rgba(10, 10, 18, 0.9)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  padding: 150px 0 120px;
  text-align: center;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 122, 165, 0.12);
  border: 1px solid rgba(255, 122, 165, 0.25);
  padding: 8px 20px;
  border-radius: 999px;
  margin-bottom: 28px;
  letter-spacing: 1px;
}
.page-hero h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -2px;
  margin-bottom: 24px;
}
.page-hero h1 em {
  font-style: normal;
  color: var(--primary);
}
.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 42px;
}
.hero-tags {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-tag {
  font-size: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.features {
  background: var(--bg);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 45, 95, 0.35);
  box-shadow: var(--shadow);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255, 45, 95, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 22px;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}
.scenes {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.scene-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.scene-content .section-tag {
  margin-bottom: 16px;
}
.scene-content h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 36px;
  letter-spacing: -1px;
}
.scene-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.scene-list li {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  transition: var(--transition);
}
.scene-list li:hover {
  border-color: rgba(255, 45, 95, 0.35);
  transform: translateX(4px);
}
.scene-num {
  font-size: 26px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  font-style: italic;
}
.scene-list h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.scene-list p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}
.scene-image img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border);
}
.plays {
  background: var(--bg);
}
.play-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.play-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.play-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 45, 95, 0.35);
  box-shadow: var(--shadow);
}
.play-img {
  height: 210px;
  overflow: hidden;
}
.play-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.5s ease;
}
.play-card:hover .play-img img {
  transform: scale(1.06);
}
.play-info {
  padding: 24px 22px 26px;
}
.play-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.play-info p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}
.stats {
  background: linear-gradient(135deg, rgba(255, 45, 95, 0.08), rgba(12, 12, 20, 0.4)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(12, 12, 20, 0.9);
}
.stat-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  backdrop-filter: blur(6px);
  transition: var(--transition);
}
.stat-item:hover {
  border-color: rgba(255, 45, 95, 0.4);
  transform: translateY(-4px);
}
.stat-num {
  display: block;
  font-size: 46px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -1px;
}
.stat-label {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
}
.faq {
  background: var(--bg);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(255, 45, 95, 0.3);
}
.faq-item[open] {
  border-color: rgba(255, 45, 95, 0.4);
}
.faq-item summary {
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
  line-height: 1;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item p {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.cta {
  background: linear-gradient(135deg, rgba(255, 45, 95, 0.16), rgba(12, 12, 20, 0.5)), url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
  text-align: center;
  position: relative;
  border-top: 1px solid var(--border);
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(12, 12, 20, 0.78);
}
.cta .container {
  position: relative;
  z-index: 1;
}
.cta h2 {
  font-size: 38px;
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: -1px;
}
.cta p {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.cta .btn {
  margin: 0 8px 8px;
}
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 50px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 14px;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 26px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a:hover {
  color: var(--primary);
}
@media (max-width: 1024px) {
  .section {
    padding: 80px 0;
  }
  .feature-grid,
  .play-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scene-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .scene-image img {
    height: 420px;
  }
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-hero h1 {
    font-size: 44px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .section-head h2,
  .scene-content h2,
  .cta h2 {
    font-size: 30px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: none;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }
  .main-nav.is-open {
    display: flex;
  }
  .main-nav a {
    padding: 14px 20px;
    text-align: center;
    font-size: 16px;
  }
  .btn-search {
    display: none;
  }
  .page-hero {
    padding: 110px 0 80px;
  }
  .page-hero h1 {
    font-size: 34px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .scene-image img {
    height: 320px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .feature-grid,
  .play-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-tags {
    flex-direction: column;
    align-items: center;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta h2 {
    font-size: 26px;
  }
  .cta .btn {
    width: 100%;
    margin: 8px 0;
  }
}

/* roulang page: category1 */
:root {
  --primary: #e50914;
  --primary-dark: #b0070f;
  --accent: #ff6b35;
  --bg: #0f0f13;
  --bg-light: #181820;
  --card-bg: #1e1e28;
  --text: #f0f0f5;
  --text-muted: #9c9cb0;
  --border: rgba(255,255,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 40px rgba(229,9,20,0.18);
  --transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; border: none; cursor: pointer; background: none; color: inherit; }
ul, ol { list-style: none; }

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 19, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

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

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(229, 9, 20, 0.35);
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text);
  white-space: nowrap;
}

.logo-text span {
  color: var(--primary);
}

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

.main-nav a {
  padding: 9px 16px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: var(--transition);
}

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

.main-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 16px rgba(229, 9, 20, 0.3);
}

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

.btn-search {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-muted);
  transition: var(--transition);
}

.btn-search:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.category-hero {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(135deg, rgba(229,9,20,0.18) 0%, rgba(15,15,19,0.92) 60%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(229, 9, 20, 0.15);
  border: 1px solid rgba(229, 9, 20, 0.35);
  color: #ff8b92;
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.category-hero h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

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

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 680px;
}

.hero-stats {
  display: flex;
  gap: 30px;
  margin-bottom: 38px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
}

.hero-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
}

.hero-stat span {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 16px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(229, 9, 20, 0.35);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(229, 9, 20, 0.45);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(229, 9, 20, 0.08);
  transform: translateY(-2px);
}

.btn-lg { padding: 16px 40px; font-size: 17px; }

/* ===== Section Common ===== */
.section {
  padding: 90px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(229, 9, 20, 0.1);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 680px;
  margin-bottom: 48px;
  line-height: 1.8;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(229, 9, 20, 0.25);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(229, 9, 20, 0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ===== Showcase / Content Cards ===== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.showcase-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.showcase-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(229, 9, 20, 0.3);
}

.showcase-img {
  position: relative;
  height: 240px;
  overflow: hidden;
}

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

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

.showcase-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 55%);
}

.showcase-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  letter-spacing: 0.5px;
}

.showcase-duration {
  position: absolute;
  bottom: 14px;
  right: 14px;
  z-index: 2;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 8px;
}

.showcase-body {
  padding: 20px 18px 24px;
}

.showcase-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.showcase-meta {
  display: flex;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
}

.showcase-meta span { display: flex; align-items: center; gap: 4px; }

/* ===== Scene Section ===== */
.scene-section {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 60px;
  position: relative;
  overflow: hidden;
}

.scene-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 50px;
  align-items: center;
}

.scene-content h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 18px;
}

.scene-content p {
  color: var(--text-muted);
  line-height: 1.85;
  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);
}

.scene-list li::before {
  content: '✓';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  background: rgba(229, 9, 20, 0.15);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 3px;
}

.scene-visual {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 100%;
  min-height: 380px;
}

.scene-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Steps / Flow ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

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

.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }

.step-number {
  width: 44px;
  height: 44px;
  margin: 0 auto 18px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(229, 9, 20, 0.35);
}

.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(229, 9, 20, 0.2); }

.faq-question {
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover { background: rgba(255, 255, 255, 0.02); }

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(229, 9, 20, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 26px 24px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
}

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, #d10a14 60%, #b0070f 100%);
  border-radius: 24px;
  padding: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 120px;
  height: 120px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}

.cta-box h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-box p {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
  line-height: 1.8;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  position: relative;
  z-index: 1;
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
  background: #f8f8fa;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 50px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 6px;
  max-width: 360px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .category-hero h1 { font-size: 46px; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

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

  .main-nav a {
    width: 100%;
    text-align: center;
    padding: 14px;
    font-size: 16px;
  }

  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .category-hero { padding: 70px 0 60px; }
  .category-hero h1 { font-size: 38px; }
  .hero-desc { font-size: 16px; }
  .hero-stats { gap: 16px; }
  .hero-stat { padding: 10px 18px; }
  .hero-stat strong { font-size: 22px; }

  .section { padding: 60px 0; }
  .section-title { font-size: 30px; }

  .feature-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .scene-section { padding: 36px 24px; }
  .scene-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { height: 64px; }
  .logo-text { font-size: 18px; }
  .logo-icon { width: 34px; height: 34px; }
  .main-nav { top: 64px; }
  .category-hero h1 { font-size: 32px; }
  .category-hero { padding: 56px 0 48px; }
  .hero-ctas .btn { width: 100%; }
  .hero-stats { flex-direction: column; gap: 10px; }
  .hero-stat { display: flex; align-items: center; gap: 10px; }
  .btn { padding: 13px 24px; font-size: 15px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 26px; }
  .footer-bottom { font-size: 12px; }
}