/* roulang page: index */
:root {
  --bg: #0B0B12;
  --panel: #16161F;
  --panel-light: #1B1B27;
  --nav-bg: #14141D;
  --primary: #FF5A2A;
  --secondary: #FF4D8D;
  --green: #21A366;
  --text: #FFFFFF;
  --text-body: #C7C7D1;
  --text-muted: #8A8A99;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 90, 42, 0.45);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 6px 18px rgba(0, 0, 0, 0.30);
  --shadow-hover: 0 14px 30px rgba(0, 0, 0, 0.45);
  --transition: all 0.3s ease;
  --gradient: linear-gradient(135deg, #FF5A2A, #FF4D8D);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -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;
  color: inherit;
}

input {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 28px;
  transition: var(--transition);
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  filter: brightness(1.08);
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 90, 42, 0.35);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--border-hover);
  background: rgba(255, 90, 42, 0.12);
}

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

.btn-block {
  width: 100%;
}

.section {
  padding-top: 96px;
  padding-bottom: 96px;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(255, 90, 42, 0.12);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 32px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Header / Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(20, 20, 29, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-icon svg {
  width: 40px;
  height: 40px;
  display: block;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

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

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-body);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-item i {
  font-size: 15px;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-item:hover {
  background: rgba(255, 90, 42, 0.18);
  border-color: rgba(255, 90, 42, 0.4);
  color: var(--text);
  transform: translateY(-2px);
}

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

.nav-item.active {
  background: rgba(255, 90, 42, 0.22);
  border-color: rgba(255, 90, 42, 0.5);
  color: var(--text);
}

.nav-item.active i {
  color: var(--primary);
}

.nav-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-actions .btn {
  padding: 10px 22px;
  font-size: 14px;
}

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  transition: var(--transition);
}

.hamburger:hover {
  background: rgba(255, 90, 42, 0.18);
  border-color: rgba(255, 90, 42, 0.4);
}

.hamburger:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== Hero ===== */
.hero {
  margin-top: 0;
  background:
    linear-gradient(180deg, rgba(11, 11, 18, 0.55) 0%, rgba(11, 11, 18, 0.88) 100%),
    url('/assets/images/backpic/back-1.jpg') center / cover no-repeat;
  position: relative;
  padding-top: 80px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 90, 42, 0.18), transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255, 77, 141, 0.12), transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-badge i {
  color: var(--primary);
}

.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

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

.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-trust i {
  color: var(--green);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 440px;
}

.hero-card {
  position: absolute;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.hero-card-back {
  width: 55%;
  height: 62%;
  top: 0;
  right: 8%;
  transform: rotate(6deg);
  opacity: 0.55;
  border: 1px solid var(--border);
}

.hero-card-mid {
  width: 50%;
  height: 58%;
  bottom: 0;
  left: 4%;
  transform: rotate(-4deg);
  border: 1px solid var(--border);
}

.hero-card-front {
  width: 56%;
  height: 66%;
  top: 14%;
  right: 2%;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.play-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  box-shadow: 0 4px 16px rgba(255, 90, 42, 0.45);
  transition: var(--transition);
}

.hero-card-front:hover .play-btn {
  transform: scale(1.1);
}

/* ===== Trust Bar ===== */
.trust-bar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}

.trust-stats {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 8px 20px;
  position: relative;
  flex: 1;
  min-width: 140px;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.08);
}

.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-value i {
  font-style: normal;
  color: var(--green);
  font-size: 20px;
  margin-right: 2px;
}

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

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

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

.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 90, 42, 0.45);
}

.feature-card:focus-within {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(255, 90, 42, 0.15);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--gradient);
  color: #fff;
  transform: scale(1.05);
}

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

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

/* ===== Scenarios ===== */
.scenarios {
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.scenario-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
}

.scenario-card:hover {
  transform: translateX(3px);
  border-color: rgba(255, 90, 42, 0.3);
  box-shadow: var(--shadow);
}

.scenario-thumb {
  width: 160px;
  height: 100px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
}

.scenario-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scenario-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.scenario-info p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

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

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

.testimonial-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  transition: var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 90, 42, 0.35);
}

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

.testimonial-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-body {
  padding: 24px;
}

.testimonial-quote {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 90, 42, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 14px;
}

.testimonial-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: 16px;
}

.testimonial-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}

.testimonial-meta .name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

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

.testimonial-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--green);
  background: rgba(33, 163, 102, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-top: 14px;
}

/* ===== Pricing ===== */
.pricing {
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.price-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

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

.price-card.popular {
  background: var(--panel-light);
  border-color: rgba(255, 90, 42, 0.55);
  transform: scale(1.03);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.price-card.popular:hover {
  transform: scale(1.03) translateY(-4px);
}

.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.price-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.price-amount {
  font-size: 40px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.price-amount small {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 2px;
}

.price-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.price-list {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.price-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  padding: 7px 0;
  line-height: 1.5;
}

.price-list li i {
  color: var(--green);
  font-size: 13px;
  margin-top: 4px;
  flex-shrink: 0;
}

.price-btn {
  width: 100%;
}

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

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

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(255, 90, 42, 0.3);
  background: rgba(255, 255, 255, 0.04);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

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

.faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-muted);
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--gradient);
  color: #fff;
}

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

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding-top: 100px;
  padding-bottom: 100px;
  background:
    linear-gradient(135deg, rgba(255, 90, 42, 0.18), rgba(255, 77, 141, 0.15)),
    url('/assets/images/backpic/back-2.jpg') center / cover no-repeat;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(11, 11, 18, 0.6);
}

.cta-section::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 90, 42, 0.25), transparent 70%);
  pointer-events: none;
}

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

.cta-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-desc {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 32px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: #0C0C12;
  border-top: 1px solid var(--border);
  padding-top: 64px;
}

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

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

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 320px;
}

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

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

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

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

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.footer-contact i {
  color: var(--primary);
  margin-top: 3px;
  font-size: 14px;
}

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

.copyright {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.disclaimer {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.7;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
}

/* ===== Reveal Animation ===== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    max-width: 520px;
    margin: 0 auto;
    height: 380px;
  }

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

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

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .price-card {
    padding: 28px 18px;
  }

  .price-amount {
    font-size: 32px;
  }

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

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    background: var(--nav-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: none;
    flex-direction: column;
    gap: 8px;
    box-shadow: var(--shadow-hover);
    z-index: 999;
  }

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

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

  .hamburger {
    display: inline-flex;
  }

  .hero {
    padding-top: 48px;
  }

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

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

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

  .hero-visual {
    height: 300px;
  }

  .stat-item {
    min-width: 100px;
    padding: 8px 10px;
  }

  .stat-value {
    font-size: 22px;
  }

  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

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

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

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

  .scenario-card {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

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

  .price-card.popular {
    transform: scale(1);
  }

  .price-card.popular:hover {
    transform: scale(1) translateY(-4px);
  }

  .cta-section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

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

  .cta-buttons {
    flex-direction: column;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .hero-visual {
    height: 250px;
  }

  .stat-value {
    font-size: 18px;
  }

  .stat-label {
    font-size: 12px;
  }

  .hero-trust {
    font-size: 12px;
    gap: 12px;
  }
}

/* roulang page: category1 */
/* ===== Design System ===== */
        :root {
            --bg: #0B0B12;
            --panel: #16161F;
            --panel-light: #1B1B27;
            --nav-bg: #14141D;
            --primary: #FF5A2A;
            --secondary: #FF4D8D;
            --green: #21A366;
            --text: #FFFFFF;
            --text-body: #C7C7D1;
            --text-muted: #8A8A99;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 90, 42, 0.45);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow: 0 6px 18px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 14px 30px rgba(0, 0, 0, 0.45);
            --transition: all 0.3s ease;
            --gradient: linear-gradient(135deg, #FF5A2A, #FF4D8D);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            -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;
            color: inherit;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 600;
            padding: 14px 28px;
            transition: var(--transition);
            line-height: 1.4;
            text-align: center;
            white-space: nowrap;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            filter: brightness(1.08);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: scale(0.98);
        }
        .btn-primary {
            background: var(--gradient);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 90, 42, 0.35);
        }
        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--border-hover);
            background: rgba(255, 90, 42, 0.12);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .section {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(20, 20, 29, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 40px;
            height: 40px;
            display: block;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid transparent;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-item i {
            font-size: 15px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: rgba(255, 90, 42, 0.18);
            border-color: rgba(255, 90, 42, 0.4);
            color: var(--text);
            transform: translateY(-2px);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: rgba(255, 90, 42, 0.22);
            border-color: rgba(255, 90, 42, 0.5);
            color: var(--text);
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-actions .btn {
            padding: 10px 22px;
            font-size: 14px;
        }
        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 90, 42, 0.18);
            border-color: rgba(255, 90, 42, 0.4);
        }
        .hamburger:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background:
                linear-gradient(180deg, rgba(11, 11, 18, 0.62) 0%, rgba(11, 11, 18, 0.92) 100%),
                url('/assets/images/backpic/back-2.jpg') center / cover no-repeat;
            position: relative;
            padding: 72px 0 56px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -60px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 90, 42, 0.16), transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 77, 141, 0.10), transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }
        .category-hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .category-hero-content {
            max-width: 540px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 10px;
            color: var(--text-muted);
        }
        .category-hero h1 {
            font-size: 44px;
            line-height: 1.15;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 .highlight {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .category-hero-sub {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 32px;
        }
        .category-hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .category-hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .category-hero-stat span {
            display: block;
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            font-variant-numeric: tabular-nums;
        }
        .category-hero-stat span small {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 2px;
        }
        .category-hero-stat p {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* Hero Rank Panel */
        .hero-rank-panel {
            background: rgba(22, 22, 31, 0.88);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(8px);
            position: relative;
        }
        .hero-rank-panel::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(255, 90, 42, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .rank-panel-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .rank-panel-title h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rank-panel-title h3 i {
            color: var(--primary);
            font-size: 16px;
        }
        .rank-panel-title a {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .rank-panel-title a:hover {
            color: var(--primary);
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .rank-item:hover {
            background: rgba(255, 90, 42, 0.08);
            border-color: rgba(255, 90, 42, 0.22);
            transform: translateX(3px);
        }
        .rank-num {
            width: 28px;
            height: 28px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num {
            background: var(--gradient);
            color: #fff;
        }
        .rank-item:nth-child(2) .rank-num {
            background: rgba(255, 90, 42, 0.3);
            color: var(--primary);
        }
        .rank-item:nth-child(3) .rank-num {
            background: rgba(255, 77, 141, 0.2);
            color: var(--secondary);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info strong {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-info span {
            font-size: 12px;
            color: var(--text-muted);
        }
        .rank-heat {
            font-size: 12px;
            font-weight: 600;
            color: var(--green);
            font-variant-numeric: tabular-nums;
            flex-shrink: 0;
        }

        /* ===== Filter Bar ===== */
        .filter-section {
            padding: 32px 0 8px;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 18px 20px;
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
        }
        .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 6px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .filter-label i {
            color: var(--primary);
        }
        .filter-tag {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }
        .filter-tag:hover {
            background: rgba(255, 90, 42, 0.14);
            border-color: rgba(255, 90, 42, 0.35);
            color: var(--text);
        }
        .filter-tag.active {
            background: rgba(255, 90, 42, 0.22);
            border-color: rgba(255, 90, 42, 0.5);
            color: var(--text);
            font-weight: 600;
        }
        .filter-tag:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Feature Card ===== */
        .feature-card-wrap {
            padding: 40px 0 8px;
        }
        .feature-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16 / 7;
            min-height: 320px;
            background: var(--panel);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .feature-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover img {
            transform: scale(1.03);
        }
        .feature-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 11, 18, 0.92) 20%, rgba(11, 11, 18, 0.45) 60%, rgba(11, 11, 18, 0.15) 100%);
            display: flex;
            align-items: flex-end;
            padding: 48px;
        }
        .feature-card-body {
            max-width: 560px;
        }
        .feature-card-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--gradient);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
        }
        .feature-card-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .feature-card-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-card-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 26px;
            background: var(--gradient);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(255, 90, 42, 0.35);
        }
        .feature-card-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            filter: brightness(1.08);
        }
        .feature-card-btn i {
            font-size: 14px;
        }

        /* ===== Content Grid ===== */
        .content-grid-wrap {
            padding: 48px 0 8px;
        }
        .grid-section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .grid-section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
        }
        .grid-section-head p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 480px;
        }
        .video-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .video-card {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
        }
        .video-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 90, 42, 0.35);
            box-shadow: var(--shadow-hover);
        }
        .video-card-cover {
            position: relative;
            aspect-ratio: 3 / 4;
            overflow: hidden;
            background: #1E1E28;
        }
        .video-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .video-card:hover .video-card-cover img {
            transform: scale(1.05);
        }
        .video-card-badges {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            z-index: 2;
        }
        .badge-hd {
            padding: 3px 10px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 10px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .badge-score {
            padding: 3px 10px;
            background: rgba(33, 163, 102, 0.85);
            color: #fff;
            font-size: 10px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .badge-score i {
            font-size: 9px;
        }
        .play-overlay {
            position: absolute;
            inset: 0;
            background: rgba(11, 11, 18, 0.0);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: var(--transition);
        }
        .video-card:hover .play-overlay {
            background: rgba(11, 11, 18, 0.35);
            opacity: 1;
        }
        .play-overlay .play-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            transform: scale(0.8);
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(255, 90, 42, 0.45);
        }
        .video-card:hover .play-overlay .play-icon {
            transform: scale(1);
        }
        .video-card-body {
            padding: 16px 18px 18px;
        }
        .video-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .video-card-body .meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
        }
        .video-card-body .meta i {
            font-size: 10px;
            color: var(--primary);
        }
        .video-card-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            padding: 56px 0 24px;
            display: flex;
            justify-content: center;
        }
        .pagination {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .page-btn {
            min-width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: var(--panel);
            border: 1px solid var(--border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            padding: 0 12px;
        }
        .page-btn:hover {
            background: rgba(255, 90, 42, 0.14);
            border-color: rgba(255, 90, 42, 0.35);
            color: var(--text);
        }
        .page-btn.active {
            background: var(--gradient);
            border-color: transparent;
            color: #fff;
            font-weight: 700;
        }
        .page-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== CTA ===== */
        .category-cta {
            margin-top: 72px;
            background:
                linear-gradient(135deg, rgba(11, 11, 18, 0.85) 0%, rgba(11, 11, 18, 0.65) 100%),
                url('/assets/images/backpic/back-3.jpg') center / cover no-repeat;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .category-cta::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 90, 42, 0.16), transparent 70%);
            border-radius: 50%;
        }
        .category-cta h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .category-cta p {
            font-size: 15px;
            color: var(--text-body);
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 2;
        }
        .category-cta .btn {
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0C0C12;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 64px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            transform: translateX(3px);
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--primary);
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 24px 0;
            text-align: center;
        }
        .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom .disclaimer {
            font-size: 12px;
            color: rgba(138, 138, 153, 0.7);
            margin-top: 6px;
            line-height: 1.6;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .nav-container {
                flex-wrap: wrap;
                min-height: 70px;
                padding-top: 12px;
                padding-bottom: 12px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .main-nav::-webkit-scrollbar {
                display: none;
            }
            .nav-item {
                padding: 8px 14px;
                font-size: 12px;
                flex-shrink: 0;
            }
            .nav-actions {
                margin-left: auto;
            }
            .category-hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-rank-panel {
                max-width: 560px;
            }
            .video-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--nav-bg);
                border-radius: var(--radius-md);
                padding: 12px;
                gap: 6px;
                border: 1px solid var(--border);
                margin-top: 8px;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
                justify-content: flex-start;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero-sub {
                font-size: 14px;
            }
            .category-hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .category-hero-actions .btn {
                width: 100%;
            }
            .category-hero-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .rank-panel-title {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .filter-bar {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding: 14px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .filter-bar::-webkit-scrollbar {
                display: none;
            }
            .filter-tag {
                flex-shrink: 0;
                white-space: nowrap;
            }
            .feature-card-overlay {
                padding: 24px;
                background: linear-gradient(180deg, rgba(11, 11, 18, 0.4) 0%, rgba(11, 11, 18, 0.92) 100%);
            }
            .feature-card-body h2 {
                font-size: 20px;
            }
            .feature-card-body p {
                font-size: 13px;
            }
            .feature-card-btn {
                padding: 10px 20px;
                font-size: 13px;
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .video-card-body {
                padding: 12px 14px 14px;
            }
            .grid-section-head {
                flex-direction: column;
                align-items: flex-start;
            }
            .grid-section-head h2 {
                font-size: 22px;
            }
            .pagination {
                flex-wrap: wrap;
                justify-content: center;
            }
            .category-cta {
                padding: 40px 24px;
            }
            .category-cta h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom .copyright {
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .badge-hd {
                padding: 2px 8px;
                font-size: 9px;
            }
            .badge-score {
                padding: 2px 8px;
            }
            .video-card-body h3 {
                font-size: 14px;
            }
            .video-card-desc {
                display: none;
            }
        }