/* roulang page: index */
:root {
  --bg-deep: #070D1A;
  --bg-card: #0B1326;
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-input: #0F1A30;
  --text-main: #D5DEEF;
  --text-sub: #8A9BB8;
  --line: rgba(255, 255, 255, 0.08);
  --primary: #16F0B1;
  --primary-glow: rgba(22, 240, 177, 0.35);
  --accent: #FF6B2C;
  --accent-glow: rgba(255, 107, 44, 0.4);
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 4px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Oswald", "Bebas Neue", "Arial Narrow", sans-serif;
  --container: 1200px;
  --gap: 24px;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

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

.section-line {
  display: inline-block;
  width: 48px;
  height: 6px;
  background: var(--primary);
  margin-bottom: 16px;
  border-radius: 3px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.section-head p {
  color: var(--text-sub);
  font-size: 16px;
}

.section-track::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(22, 240, 177, 0.3), transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

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

.btn-primary {
  background: var(--primary);
  color: #04100A;
  border-bottom: 3px solid #0FB887;
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 32px rgba(22, 240, 177, 0.55);
  transform: translateY(-2px);
}

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

.btn-primary-outline {
  background: rgba(22, 240, 177, 0.1);
  color: var(--primary);
  border: 1px solid rgba(22, 240, 177, 0.35);
}

.btn-primary-outline:hover {
  background: rgba(22, 240, 177, 0.18);
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-accent {
  background: var(--accent);
  color: #1A0B03;
  border-bottom: 3px solid #B94A1E;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-accent:hover {
  box-shadow: 0 0 32px rgba(255, 107, 44, 0.55);
  transform: translateY(-2px);
}

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

.card {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.card-pad {
  padding: 28px;
}

.card-frame::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px dashed rgba(22, 240, 177, 0.15);
  border-radius: 10px;
  pointer-events: none;
}

.card-frame > * {
  position: relative;
  z-index: 1;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(7, 13, 26, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
  background: rgba(7, 13, 26, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.brand-mark {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 32px;
}

.nav-links .nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 0;
  color: var(--text-main);
  transition: color 0.3s;
}

.nav-links .nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

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

.nav-links .nav-link:hover::after,
.nav-links .nav-link.active::after {
  width: 100%;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-main);
  transition: all 0.3s;
}

.nav-toggle:hover span {
  background: var(--primary);
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 13, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
  z-index: 999;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  padding: 12px 16px;
}

.mobile-menu a:hover {
  color: var(--primary);
}

.mobile-menu .btn {
  margin-top: 8px;
  max-width: 280px;
}

.menu-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--text-sub);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: all 0.3s;
}

.menu-close:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(180deg, rgba(7, 13, 26, 0.5) 0%, rgba(7, 13, 26, 0.85) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding-top: 64px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 240, 177, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 240, 177, 0.06) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.02) 0 2px, transparent 2px 24px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(22, 240, 177, 0.1);
  border: 1px solid rgba(22, 240, 177, 0.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-sub);
  font-size: 13px;
  letter-spacing: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: color 0.3s;
}

.hero-scroll:hover {
  color: var(--primary);
}

.hero-score-card {
  position: absolute;
  right: 32px;
  bottom: 120px;
  z-index: 2;
  background: rgba(7, 13, 26, 0.75);
  border: 1px solid rgba(22, 240, 177, 0.25);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 18px 22px;
  transform: rotate(2deg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.hero-score-card::after {
  content: '';
  position: absolute;
  right: -6px;
  bottom: -6px;
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  border-radius: 0 0 4px 0;
}

.score-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.score-live {
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 1px;
}

.score-date {
  font-size: 13px;
  color: var(--text-sub);
}

.score-main {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.score-meta {
  font-size: 12px;
  color: var(--text-sub);
  margin-top: 6px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--gap);
}

.feature-visual {
  position: relative;
  min-height: 380px;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--bg-card);
}

.feature-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.feature-visual:hover img {
  transform: scale(1.03);
}

.feature-visual-info {
  position: absolute;
  left: 20px;
  bottom: 20px;
  right: 20px;
  background: rgba(7, 13, 26, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 18px 20px;
  border-radius: 12px;
  border: 1px solid rgba(22, 240, 177, 0.2);
}

.feature-visual-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-visual-info p {
  font-size: 14px;
  color: var(--text-sub);
}

.feature-cards-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: var(--gap);
}

.feature-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(22, 240, 177, 0.35);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-num {
  font-family: var(--font-num);
  font-size: 36px;
  color: rgba(255, 255, 255, 0.2);
  font-weight: 800;
  line-height: 1;
  transition: color 0.3s;
}

.feature-card:hover .feature-num {
  color: var(--primary);
}

.feature-icon {
  width: 44px;
  height: 44px;
  margin: 16px 0 12px;
  color: var(--primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-sub);
  font-size: 14px;
}

.feature-wide {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.feature-wide:hover {
  border-color: rgba(22, 240, 177, 0.35);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-wide .feature-num {
  font-size: 48px;
}

.feature-wide .feature-icon {
  margin: 0;
  width: 50px;
  height: 50px;
  flex-shrink: 0;
}

.feature-wide .feature-text h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-wide .feature-text p {
  font-size: 14px;
  color: var(--text-sub);
}

.demo-browser {
  max-width: 900px;
  margin: 0 auto 40px;
  overflow: hidden;
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--line);
}

.browser-bar .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #FF5F57;
}

.browser-bar .dot:nth-child(2) {
  background: #FEBC2E;
}

.browser-bar .dot:nth-child(3) {
  background: #28C840;
}

.browser-url {
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.06);
  padding: 4px 16px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

.browser-body {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  min-height: 260px;
}

.login-mock {
  padding: 28px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
}

.mock-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mock-field label {
  font-size: 13px;
  color: var(--text-sub);
}

.mock-field input {
  background: var(--bg-input);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 14px;
}

.mock-field input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 240, 177, 0.15);
}

.mock-chart {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

.mock-chart svg {
  width: 100%;
  height: auto;
}

.chart-label {
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 16px;
}

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

.chart-label i {
  width: 14px;
  height: 3px;
  border-radius: 2px;
  display: inline-block;
}

.demo-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
}

.step-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(22, 240, 177, 0.15);
  border: 1px solid rgba(22, 240, 177, 0.35);
  color: var(--primary);
  font-weight: 700;
  transition: box-shadow 0.3s;
}

.step-item:hover .step-dot {
  box-shadow: 0 0 20px var(--primary-glow);
}

.step-line {
  width: 60px;
  height: 1px;
  border-top: 1px dashed rgba(22, 240, 177, 0.3);
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.stat-item {
  padding: 32px 20px;
  text-align: center;
  border-right: 1px solid var(--line);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  display: block;
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 8px;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.testimonial-card {
  padding: 32px;
}

.testimonial-card.offset {
  transform: translateY(24px);
}

.quote-mark {
  font-size: 48px;
  color: var(--primary);
  font-family: Georgia, serif;
  line-height: 1;
  display: block;
  margin-bottom: 12px;
}

.testimonial-card p {
  color: var(--text-sub);
  margin-bottom: 20px;
}

.testimonial-card figcaption {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.stars {
  color: #FFB800;
  letter-spacing: 3px;
  font-size: 14px;
}

.testimonial-card strong {
  font-weight: 600;
}

.testimonial-card span {
  color: var(--text-sub);
  font-size: 13px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.price-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  opacity: 0.92;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.price-card.featured {
  opacity: 1;
  border-color: rgba(255, 107, 44, 0.4);
  box-shadow: 0 0 32px rgba(255, 107, 44, 0.18);
  transform: translateY(-8px);
}

.price-card.featured:hover {
  transform: translateY(-12px);
}

.price-card.featured .price-num {
  color: var(--accent);
}

.price-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
}

.price-num {
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.price span:last-child {
  color: var(--text-sub);
  font-size: 14px;
}

.price-card ul {
  margin-bottom: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-card li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.price-card li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.badge-orange {
  position: absolute;
  top: -14px;
  right: 20px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 0 16px var(--accent-glow);
  z-index: 2;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s, background 0.3s;
}

.faq-item.active {
  border-color: rgba(22, 240, 177, 0.3);
  background: rgba(22, 240, 177, 0.06);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  color: var(--text-main);
  transition: color 0.3s;
}

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

.faq-icon {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  transition: all 0.3s;
}

.faq-icon::before {
  width: 18px;
  height: 2px;
  top: 8px;
  left: 0;
}

.faq-icon::after {
  width: 2px;
  height: 18px;
  top: 0;
  left: 8px;
}

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

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

.faq-item.active .faq-a {
  max-height: 300px;
}

.faq-a-inner {
  padding: 0 22px 20px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.75;
  border-left: 3px solid var(--primary);
  margin-left: 22px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}

.news-card {
  display: flex;
  gap: 20px;
  padding: 18px;
  align-items: center;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(22, 240, 177, 0.35);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.news-thumb {
  width: 140px;
  height: 100px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

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

.news-card:hover .news-thumb img {
  transform: scale(1.03);
}

.news-body {
  flex: 1;
  min-width: 0;
}

.news-cat {
  display: inline-block;
  background: rgba(22, 240, 177, 0.15);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.news-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.news-body h3 a {
  transition: color 0.3s;
}

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

.news-body p {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.news-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  transition: opacity 0.3s;
}

.news-link:hover {
  opacity: 0.8;
}

.news-empty {
  border: 2px dashed rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  color: var(--text-sub);
  max-width: 860px;
  margin: 0 auto;
}

.news-empty .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.news-more {
  text-align: center;
  margin-top: 32px;
}

.news-more a {
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  transition: opacity 0.3s;
}

.news-more a:hover {
  opacity: 0.8;
}

.cta-banner {
  position: relative;
  padding: 80px 0;
  background:
    linear-gradient(180deg, rgba(7, 13, 26, 0.82), rgba(7, 13, 26, 0.92)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  text-align: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cta-banner h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--text-sub);
  margin-bottom: 24px;
  font-size: 16px;
}

.site-footer {
  background: #050A14;
  border-top: 1px solid var(--line);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  font-size: 22px;
}

.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  margin-top: 16px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}

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

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

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-sub);
}

.floating-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.35s, transform 0.35s, visibility 0.35s;
}

.floating-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.floating-cta .btn {
  border-radius: 999px;
  padding: 14px 24px;
  box-shadow: 0 0 24px var(--primary-glow);
}

@media (max-width: 1023px) {
  .section {
    padding: 72px 0;
  }

  .hero-score-card {
    display: none;
  }

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

  .feature-cards-stack {
    grid-template-rows: none;
    grid-template-columns: 1fr 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .price-card.featured {
    transform: none;
  }

  .price-card.featured:hover {
    transform: translateY(-4px);
  }

  .browser-body {
    grid-template-columns: 1fr;
  }

  .login-mock {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

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

  .testimonial-card.offset {
    transform: none;
  }

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

  .stats-bar {
    grid-template-columns: 1fr 1fr;
  }

  .stat-item:nth-child(2n) {
    border-right: none;
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .stat-item {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    min-height: 100vh;
    padding-top: 80px;
  }

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

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-scroll {
    bottom: 20px;
  }

  .feature-cards-stack {
    grid-template-columns: 1fr;
  }

  .feature-wide {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .stat-num {
    font-size: 32px;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
  }

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

  .news-thumb {
    width: 100%;
    height: 180px;
  }

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

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

  .demo-steps {
    flex-direction: column;
    gap: 12px;
  }

  .step-line {
    width: 1px;
    height: 24px;
  }

  .floating-cta {
    right: 16px;
    bottom: 16px;
  }

  .floating-cta .btn {
    padding: 12px 20px;
    font-size: 14px;
  }
}

/* roulang page: category1 */
:root {
  --bg-deep: #070D1A;
  --bg-panel: #0B1326;
  --bg-glass: rgba(255,255,255,0.06);
  --text-main: #D5DEEF;
  --text-sub: #8A9BB8;
  --text-weak: #66778F;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(22,240,177,0.35);
  --accent: #16F0B1;
  --accent-glow: 0 0 20px rgba(22,240,177,0.35);
  --accent-glow-hover: 0 0 32px rgba(22,240,177,0.55);
  --orange: #FF6B2C;
  --orange-glow: 0 0 20px rgba(255,107,44,0.4);
  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;
  --radius: 16px;
  --radius-sm: 8px;
  --container: 1200px;
  --space-section: 96px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", Oswald, "Bebas Neue", Impact, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .3s ease; }
a:hover { color: #5effcb; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }

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

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  z-index: 1000;
  background: rgba(7,13,26,0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(7,13,26,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
  white-space: nowrap;
}
.brand-mark {
  color: var(--accent);
  font-weight: 800;
}
.brand:hover { color: var(--text-main); }
.brand:hover .brand-mark { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  transition: color .3s ease;
}
.nav-link:hover { color: var(--text-main); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: var(--accent-glow);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn-search {
  width: 20px; height: 20px;
  position: relative;
  opacity: .8;
  transition: opacity .2s;
}
.btn-search::before {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  border: 2px solid var(--text-main);
  border-radius: 50%;
  top: 1px; left: 1px;
}
.btn-search::after {
  content: '';
  position: absolute;
  width: 2px; height: 8px;
  background: var(--text-main);
  bottom: 2px; right: 2px;
  transform: rotate(-45deg);
  border-radius: 1px;
}
.btn-search:hover { opacity: 1; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  transition: all .3s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-accent {
  background: var(--accent);
  color: #071018;
  box-shadow: var(--accent-glow);
}
.btn-accent:hover {
  background: #3affc3;
  box-shadow: var(--accent-glow-hover);
  color: #071018;
  transform: translateY(-2px);
}
.btn-accent:active { transform: scale(0.97); }
.btn-ghost {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-main);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-ghost:active { transform: scale(0.97); }
.btn-orange {
  background: var(--orange);
  color: #1A0D05;
  box-shadow: var(--orange-glow);
}
.btn-orange:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 28px rgba(255,107,44,0.55);
  transform: translateY(-2px);
  color: #1A0D05;
}
.btn-orange:active { transform: scale(0.97); }

/* Hamburger */
.hamburger {
  display: none;
  width: 32px; height: 26px;
  position: relative;
  z-index: 1102;
}
.hamburger span {
  position: absolute;
  left: 0; width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all .3s ease;
}
.hamburger span:nth-child(1) { top: 4px; }
.hamburger span:nth-child(2) { top: 12px; }
.hamburger span:nth-child(3) { top: 20px; }
.hamburger.active span:nth-child(1) { top: 12px; transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 12px; transform: rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(7,13,26,0.97);
  backdrop-filter: blur(20px);
  z-index: 1100;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  padding: 14px 24px;
  transition: color .3s;
}
.mobile-menu a.active { color: var(--accent); }
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .btn { margin-top: 16px; }

/* ===== Hero ===== */
.category-hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  background: linear-gradient(180deg, rgba(7,13,26,0.75), rgba(7,13,26,0.92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow: hidden;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(22,240,177,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,240,177,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.category-hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 14px;
  border-radius: 4px;
  background: rgba(22,240,177,0.15);
  color: var(--accent);
  border: 1px solid rgba(22,240,177,0.25);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.category-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  color: #fff;
}
.category-hero h1 .highlight {
  color: var(--accent);
}
.category-hero p {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 620px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  padding: 96px 0 0;
  background: var(--bg-deep);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-weak); opacity: .6; }
.breadcrumb .current { color: var(--accent); }

/* ===== Section common ===== */
.section { padding: var(--space-section) 0; }
.section-head {
  margin-bottom: 48px;
  max-width: 720px;
}
.section-head .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 10px;
  padding-left: 14px;
  position: relative;
}
.section-head .section-tag::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 6px; height: 18px;
  background: var(--accent);
  border-radius: 3px;
  box-shadow: var(--accent-glow);
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== Info cards ===== */
.info-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.info-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.info-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}
.info-card-img {
  position: relative;
  aspect-ratio: 3/2;
  overflow: hidden;
  background: linear-gradient(135deg, #0B1326, #101c3a);
}
.info-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.info-card:hover .info-card-img img { transform: scale(1.03); }
.info-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(7,13,26,0.7));
}
.info-card-tag {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(22,240,177,0.2);
  color: var(--accent);
  border: 1px solid rgba(22,240,177,0.3);
  backdrop-filter: blur(8px);
}
.info-card-body {
  padding: 22px;
}
.info-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}
.info-card-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}
.info-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-weak);
}
.info-card-meta .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--text-weak);
  opacity: .5;
}

/* ===== Features / Value ===== */
.features-section {
  background: var(--bg-panel);
  position: relative;
}
.features-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(22,240,177,0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.feature-item {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  backdrop-filter: blur(14px);
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity .3s ease;
}
.feature-item:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.feature-item:hover::before { opacity: 1; }
.feature-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 800;
  color: rgba(22,240,177,0.25);
  line-height: 1;
  margin-bottom: 16px;
  transition: color .3s ease;
}
.feature-item:hover .feature-num { color: var(--accent); }
.feature-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}
.feature-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(22,240,177,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--accent);
  border: 1px solid rgba(22,240,177,0.2);
}

/* ===== Scenario ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.scenario-card {
  display: flex;
  gap: 20px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: all .3s ease;
}
.scenario-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.3);
}
.scenario-icon {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(22,240,177,0.1);
  border: 1px solid rgba(22,240,177,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent);
}
.scenario-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ===== Process / Steps ===== */
.process-section {
  background: var(--bg-panel);
  position: relative;
}
.process-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(22,240,177,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,240,177,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.steps-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.step-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  transition: all .3s ease;
  position: relative;
}
.step-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.step-num {
  width: 48px; height: 48px;
  line-height: 48px;
  text-align: center;
  border-radius: 50%;
  background: rgba(22,240,177,0.15);
  border: 1px solid rgba(22,240,177,0.35);
  color: var(--accent);
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 16px;
  box-shadow: 0 0 16px rgba(22,240,177,0.2);
  transition: all .3s ease;
}
.step-item:hover .step-num {
  box-shadow: 0 0 28px rgba(22,240,177,0.5);
}
.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 48px;
  overflow: hidden;
  position: relative;
}
.stats-bar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(22,240,177,0.4), transparent);
}
.stat-item {
  padding: 32px 20px;
  text-align: center;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0; top: 20%;
  height: 60%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(22,240,177,0.25), transparent);
}
.stat-num {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 6px;
  text-shadow: 0 0 24px rgba(22,240,177,0.25);
}
.stat-label {
  font-size: 13px;
  color: var(--text-sub);
  letter-spacing: 0.5px;
}

/* ===== Testimonials ===== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  align-items: start;
}
.t-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all .3s ease;
}
.t-card:nth-child(2) { margin-top: 24px; }
.t-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}
.t-quote {
  font-family: Georgia, serif;
  font-size: 42px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  opacity: .6;
}
.t-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 16px;
}
.t-footer {
  display: flex;
  align-items: center;
  gap: 12px;
}
.t-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(22,240,177,0.3), rgba(22,240,177,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}
.t-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}
.t-role {
  font-size: 12px;
  color: var(--text-weak);
}
.t-stars {
  margin-left: auto;
  color: #FFB800;
  font-size: 14px;
  letter-spacing: 2px;
}

/* ===== FAQ ===== */
.faq-section {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all .3s ease;
}
.faq-item.open {
  background: rgba(22,240,177,0.04);
  border-color: var(--border-hover);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  gap: 16px;
  transition: color .3s ease;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 22px; height: 22px;
  position: relative;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--accent);
  border-radius: 2px;
  transition: all .3s ease;
}
.faq-icon::before {
  width: 16px; height: 2px;
  top: 10px; left: 3px;
}
.faq-icon::after {
  width: 2px; height: 16px;
  top: 3px; left: 10px;
}
.faq-item.open .faq-icon::after { transform: scaleY(0); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(180deg, rgba(7,13,26,0.85), rgba(7,13,26,0.95)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(22,240,177,0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  margin-bottom: 14px;
  color: #fff;
}
.cta-content p {
  color: var(--text-sub);
  font-size: 16px;
  margin-bottom: 32px;
  line-height: 1.8;
}

/* ===== Footer ===== */
.site-footer {
  background: #050A14;
  border-top: 1px solid var(--border);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand {
  font-size: 22px;
  margin-bottom: 12px;
  display: inline-flex;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-top: 10px;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col ul li {
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}
.footer-col ul li a {
  color: var(--text-sub);
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-weak);
}

/* ===== Back to top ===== */
.back-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 1px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all .35s ease;
  font-size: 18px;
  color: var(--accent);
  cursor: pointer;
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-top:hover {
  box-shadow: var(--accent-glow);
  transform: translateY(-3px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .info-card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .nav-links { display: none; }
  .header-cta .btn-header { display: none; }
  .hamburger { display: block; }
  .category-hero { min-height: 420px; padding: 110px 0 60px; }
  :root { --space-section: 72px; }
}

@media (max-width: 768px) {
  .info-card-grid,
  .features-grid,
  .scenario-grid,
  .testimonial-grid,
  .stats-bar { grid-template-columns: 1fr; }
  .steps-container { grid-template-columns: 1fr; }
  .stat-item:not(:last-child)::after { display: none; }
  .t-card:nth-child(2) { margin-top: 0; }
  .category-hero h1 { font-size: clamp(28px, 6vw, 36px); }
  .category-hero p { font-size: 15px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .section-head h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  :root { --space-section: 56px; }
  .back-top { bottom: 20px; right: 20px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .scenario-card { flex-direction: column; padding: 22px; }
  .faq-question { font-size: 15px; padding: 16px 18px; }
  .faq-answer-inner { padding: 0 18px 18px; }
  .cart-item { flex-wrap: wrap; }
  .btn { padding: 10px 16px; font-size: 14px; }
  .mobile-menu a { font-size: 19px; }
}

/* ===== Focus visible ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* roulang page: article */
:root {
  --bg-primary: #070D1A;
  --bg-secondary: #0B1326;
  --bg-deep: #050A14;
  --bg-card: #0D1728;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.1);
  --text-primary: #D5DEEF;
  --text-secondary: #8A9BB8;
  --text-muted: #5E6E8C;
  --accent: #16F0B1;
  --accent-dark: #0BBF8A;
  --accent-glow: rgba(22,240,177,0.35);
  --accent-glow-hover: rgba(22,240,177,0.55);
  --orange: #FF6B2C;
  --orange-glow: rgba(255,107,44,0.4);
  --gold: #FFB800;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(22,240,177,0.35);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.25);
  --shadow-glow: 0 0 20px rgba(22,240,177,0.35);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", Oswald, "Bebas Neue", "Arial Narrow", sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s ease; }
img { max-width: 100%; display: block; height: auto; }
ul, ol { list-style-position: inside; }
button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: all .3s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: #06281F;
  box-shadow: 0 0 20px rgba(22,240,177,0.35);
}
.btn-primary:hover {
  background: #4CF5C5;
  box-shadow: 0 0 32px rgba(22,240,177,0.55);
  transform: translateY(-2px);
}
.btn-orange {
  background: var(--orange);
  color: #2B1005;
  box-shadow: 0 0 20px rgba(255,107,44,0.35);
}
.btn-orange:hover {
  background: #FF8553;
  box-shadow: 0 0 32px rgba(255,107,44,0.55);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(22,240,177,0.15);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 18px; font-size: 14px; border-radius: 6px; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7,13,26,0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(7,13,26,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}
body.inner-page .site-header {
  background: rgba(7,13,26,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}
.brand .brand-mark {
  color: var(--accent);
  text-shadow: 0 0 16px rgba(22,240,177,0.4);
}
.brand .brand-sub { color: var(--text-primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color .25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .3s ease;
}
.nav-toggle:hover { background: rgba(255,255,255,0.06); }
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.page-banner {
  position: relative;
  padding: 120px 0 56px;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,13,26,0.45) 0%, rgba(7,13,26,0.85) 100%);
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22,240,177,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,240,177,0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color .25s ease;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current { color: var(--text-primary); }
.banner-badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(22,240,177,0.15);
  border: 1px solid rgba(22,240,177,0.3);
  border-radius: var(--radius-pill);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.article-main {
  position: relative;
  z-index: 2;
  padding: 48px 0 24px;
  margin-top: -24px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  box-shadow: var(--shadow-card);
  position: relative;
}
.article-card::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border: 1px solid rgba(255,255,255,0.03);
  border-radius: 12px;
  pointer-events: none;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-header h1 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item .dot { color: var(--accent); }
.meta-category {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(22,240,177,0.12);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}
.article-content {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}
.article-content > * + * { margin-top: 24px; }
.article-content p { line-height: 1.85; }
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text-primary);
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}
.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.article-content a {
  color: var(--accent);
  border-bottom: 1px solid transparent;
}
.article-content a:hover { border-bottom-color: var(--accent); }
.article-content blockquote {
  border-left: 4px solid var(--orange);
  background: rgba(255,107,44,0.06);
  padding: 24px 28px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
  margin: 32px 0;
}
.article-content blockquote cite {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  font-style: normal;
  color: var(--text-muted);
}
.article-content img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 24px 0;
  border: 1px solid var(--border);
}
.article-content ul,
.article-content ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
  line-height: 1.75;
}
.article-content li::marker { color: var(--accent); }
.article-content ol li::marker { color: var(--accent); font-weight: 700; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content th {
  background: rgba(22,240,177,0.1);
  color: var(--accent);
  font-weight: 600;
  text-align: left;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 12px 16px;
}
.article-content tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.article-content code {
  background: rgba(255,255,255,0.1);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-content pre {
  background: #0A1220;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 24px 0;
}
.article-content pre code {
  background: transparent;
  padding: 0;
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.not-found {
  text-align: center;
  padding: 48px 24px;
  border: 2px dashed rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
}
.not-found-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(22,240,177,0.1);
  border: 1px solid rgba(22,240,177,0.3);
  color: var(--accent);
  font-size: 28px;
  font-weight: 800;
}
.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.article-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}
.pagination-box {
  display: block;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all .3s ease;
}
.pagination-box:hover {
  border-color: var(--border-hover);
  background: rgba(22,240,177,0.04);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}
.pagination-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}
.pagination-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.pagination-box:hover .pagination-label { color: var(--accent); }
.pagination-box:hover .pagination-title { color: var(--accent); }
.pagination-next { text-align: right; }

.related-section {
  padding: 72px 0 40px;
}
.related-section h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  margin-bottom: 36px;
  position: relative;
  padding-left: 16px;
}
.related-section h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 24px;
  background: var(--accent);
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(22,240,177,0.4);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(22,240,177,0.08);
}
.related-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/2;
  background: #0A1220;
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .related-cover img { transform: scale(1.03); }
.related-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(7,13,26,0.4) 100%);
}
.related-body {
  padding: 20px 20px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-tag {
  align-self: flex-start;
  padding: 3px 12px;
  background: rgba(22,240,177,0.15);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}
.related-body h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--text-primary);
  transition: color .25s ease;
}
.related-card:hover .related-body h3 { color: var(--accent); }
.related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: auto;
}

.article-cta {
  padding: 72px 0 80px;
}
.cta-card {
  background: linear-gradient(135deg, rgba(22,240,177,0.08), rgba(11,19,38,0.4));
  border: 1px solid rgba(22,240,177,0.25);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22,240,177,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,240,177,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
  pointer-events: none;
}
.cta-card > * { position: relative; z-index: 2; }
.cta-card h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.cta-card p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .25s ease;
}
.footer-col ul a:hover { color: var(--accent); }
.footer-col ul li {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 1024px) {
  .nav-links { gap: 24px; }
  .article-card { padding: 40px 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 80vw);
    height: 100vh;
    background: rgba(7,13,26,0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 80px 40px 40px;
    transform: translateX(100%);
    transition: transform .35s ease;
    z-index: 999;
    border-left: 1px solid var(--border);
  }
  body.nav-open .nav-links { transform: translateX(0); }
  .nav-link {
    font-size: 20px;
    padding: 18px 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }
  .article-card { padding: 32px 24px; }
  .article-header h1 { font-size: 26px; }
  .article-meta { gap: 12px; }
  .article-pagination { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .related-cover { aspect-ratio: 16/9; }
  .cta-card { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .page-banner { padding: 100px 0 40px; }
  .article-main { padding: 32px 0 16px; }
  .article-card { padding: 24px 16px; border-radius: 12px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 22px; }
  .article-content h3 { font-size: 18px; }
  .article-content blockquote { padding: 16px 20px; }
  .banner-badge { font-size: 12px; }
  .cta-buttons { flex-direction: column; width: 100%; }
  .cta-buttons .btn { width: 100%; }
  .related-grid { gap: 16px; }
  .container { padding: 0 16px; }
}