/* roulang page: index */
:root {
  --primary: #6D28D9;
  --primary-light: #8B5CF6;
  --accent: #00D9F5;
  --highlight: #FF4D8D;
  --bg-base: #090B12;
  --bg-card: #121722;
  --bg-sub: #1A2230;
  --border-color: #232D40;
  --text-main: #E8ECF4;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-body: #CBD5E1;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: rgba(0,0,0,0.35) 0 8px 24px;
  --shadow-hover: 0 0 0 1px rgba(139,92,246,0.4), rgba(0,0,0,0.4) 0 12px 32px;
  --container-w: 1200px;
  --header-h: 64px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  background: var(--bg-base);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a:hover {
  color: #66E9FF;
}

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

ul, ol {
  list-style: none;
}

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

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  color: var(--text-main);
}

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

.section {
  padding: 80px 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-tag::before {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 15px;
  color: var(--text-body);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(9,11,18,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(35,45,64,0.6);
  height: var(--header-h);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-main {
  position: relative;
  font-size: 26px;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: 0.06em;
  line-height: 1;
}

.logo-main::after {
  content: "";
  position: absolute;
  top: 2px;
  right: -6px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.logo-sub {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.15em;
  border-left: 1px solid var(--border-color);
  padding-left: 10px;
  line-height: 1.4;
}

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

.nav-item {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-item:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.04);
}

.nav-item.active {
  color: var(--text-main);
}

.nav-item.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  min-height: 44px;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(109,40,217,0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.25);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.4);
  color: var(--text-main);
}

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

.btn-outline:hover {
  border-color: var(--primary-light);
  color: var(--text-main);
}

.btn-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,217,245,0.2);
}

.btn-gradient:hover {
  box-shadow: 0 8px 32px rgba(0,217,245,0.35);
  transform: translateY(-2px);
  color: #fff;
}

.btn-nav {
  background: var(--primary);
  color: #fff;
  padding: 8px 20px;
  min-height: 38px;
  font-size: 14px;
  border-radius: var(--radius-sm);
}

.btn-nav:hover {
  background: var(--primary-light);
  color: #fff;
}

.btn-lg {
  padding: 14px 36px;
  min-height: 48px;
  font-size: 16px;
}

.burger-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
}

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

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

.burger-btn.open span:nth-child(2) {
  opacity: 0;
}

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

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-base);
  z-index: 999;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu .nav-item {
  font-size: 18px;
  padding: 14px 16px;
  border-radius: 10px;
  border-bottom: 1px solid rgba(35,45,64,0.5);
}

.mobile-menu .btn-nav {
  margin-top: 16px;
  justify-content: center;
}

.mobile-menu .nav-item.active::after {
  display: none;
}

.mobile-menu .nav-item.active {
  background: rgba(109,40,217,0.12);
  color: var(--accent);
}

/* Hero */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 60px;
  background: linear-gradient(135deg, #0B0F17 0%, #1A1035 50%, #0E2A33 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,77,141,0.2) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,217,245,0.1);
  border: 1px solid rgba(0,217,245,0.3);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-badge::before {
  content: "●";
  font-size: 10px;
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #E8ECF4 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-num em {
  font-style: normal;
  font-size: 15px;
  color: var(--accent);
  margin-left: 1px;
  font-weight: 600;
}

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

.scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.1em;
  opacity: 0.6;
  animation: breathe 2s ease-in-out infinite;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.scroll-indicator::after {
  content: "↓";
  font-size: 16px;
}

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

@keyframes breathe {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* Timeline */
.timeline-section {
  background: var(--bg-base);
  position: relative;
}

.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 20px;
  bottom: 20px;
  left: 50%;
  width: 2px;
  background: var(--border-color);
  border-left: 2px dashed var(--border-color);
  transform: translateX(-1px);
}

.timeline-item {
  position: relative;
  display: flex;
  width: 50%;
  padding: 20px 40px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 60px;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 60px;
}

.timeline-node {
  position: absolute;
  top: 28px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  box-shadow: 0 0 0 6px rgba(0,217,245,0.2);
  z-index: 1;
}

.timeline-item:nth-child(odd) .timeline-node {
  right: -18px;
}

.timeline-item:nth-child(even) .timeline-node {
  left: -18px;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: rgba(139,92,246,0.4);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.timeline-step {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.timeline-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  margin-bottom: 10px;
}

.timeline-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

/* Advantage */
.advantage-section {
  background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-card) 100%);
}

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

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

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

.adv-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139,92,246,0.4);
  box-shadow: var(--shadow-card);
}

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

.adv-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(109,40,217,0.2), rgba(0,217,245,0.15));
  border: 1px solid rgba(139,92,246,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.adv-icon svg {
  width: 28px;
  height: 28px;
}

.adv-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* Pricing */
.pricing-section {
  background: var(--bg-base);
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: flex-start;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: var(--transition);
}

.price-card:hover {
  border-color: rgba(139,92,246,0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.price-card.recommend {
  border-color: rgba(255,77,141,0.4);
  box-shadow: 0 0 40px rgba(255,77,141,0.08);
  transform: translateY(-12px);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(255,77,141,0.02) 100%);
}

.price-card.recommend:hover {
  transform: translateY(-14px);
  box-shadow: 0 0 0 1px rgba(255,77,141,0.3), 0 12px 32px rgba(0,0,0,0.4);
}

.price-card.recommend::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  background: var(--highlight);
  border-radius: 3px;
}

.price-recommend-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--highlight);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

.price-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

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

.price-amount .currency {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

.price-amount .number {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

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

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

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

.price-check {
  color: var(--success);
  flex-shrink: 0;
  margin-top: 2px;
}

.price-cross {
  color: var(--error);
  flex-shrink: 0;
  margin-top: 2px;
}

/* CTA Form */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(109,40,217,0.2), rgba(0,217,245,0.05)), var(--bg-base);
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 36px;
}

.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: left;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 44px;
  background: #0B0F17;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  color: var(--text-main);
  transition: var(--transition);
  font-size: 14px;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,217,245,0.15);
}

.form-group input.error,
.form-group select.error {
  border-color: var(--error);
}

.form-group input.error:focus,
.form-group select.error:focus {
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}

.form-error-msg {
  display: none;
  font-size: 12px;
  color: var(--error);
  margin-top: 6px;
}

.form-group.has-error .form-error-msg {
  display: block;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success.show {
  display: block;
}

.form-success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(16,185,129,0.12);
  border: 2px solid var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--success);
}

.form-success h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.form-success p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* News */
.news-section {
  background: var(--bg-base);
}

.news-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.news-card {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  border-color: rgba(139,92,246,0.4);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.news-cover {
  width: 160px;
  min-height: 100px;
  flex-shrink: 0;
  background: var(--bg-sub);
  overflow: hidden;
}

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

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

.news-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.news-tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--accent);
  background: rgba(0,217,245,0.08);
  border: 1px solid rgba(0,217,245,0.2);
  padding: 2px 10px;
  border-radius: 100px;
  margin-bottom: 8px;
  width: fit-content;
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 4px;
}

.news-title a {
  color: var(--text-main);
}

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

.news-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

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

.news-link {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
}

.news-link:hover {
  color: #66E9FF;
}

.news-empty {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}

.news-empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.news-more-wrap {
  text-align: center;
}

/* FAQ */
.faq-section {
  background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-card) 100%);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(0,217,245,0.3);
  background: var(--bg-sub);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
  transition: var(--transition);
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  position: relative;
  transition: transform 0.3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent);
  border-radius: 2px;
  transition: var(--transition);
}

.faq-icon::before {
  width: 14px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 14px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}

/* Footer */
.site-footer {
  background: #06080D;
  border-top: 1px solid #1E2636;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

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

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 260px;
}

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

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

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

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-bottom {
  border-top: 1px solid #1E2636;
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

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

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

/* Responsive */
@media (max-width: 1023px) {
  .nav-menu {
    display: none;
  }

  .burger-btn {
    display: flex;
  }

  .hero {
    min-height: 520px;
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .price-card.recommend:hover {
    transform: translateY(-2px);
  }

  .timeline::before {
    left: 18px;
  }

  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding: 16px 0 16px 44px !important;
    text-align: left !important;
  }

  .timeline-item .timeline-node {
    left: 0 !important;
    right: auto !important;
  }

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

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

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

  .logo-sub {
    display: none;
  }

  .btn-nav {
    display: none;
  }

  .hero {
    min-height: 460px;
    padding-top: calc(var(--header-h) + 24px);
  }

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

  .hero-sub {
    font-size: 15px;
  }

  .hero-stats {
    gap: 20px;
  }

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

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

  .news-card {
    flex-direction: column;
  }

  .news-cover {
    width: 100%;
    height: 120px;
  }

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

  .timeline-card {
    padding: 18px;
  }

  .form-card {
    padding: 20px;
  }

  .btn-lg {
    width: 100%;
  }

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

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

@media (max-width: 400px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn-nav {
    width: 100%;
  }

  .stat-num {
    font-size: 20px;
  }

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

  .timeline-item {
    padding-left: 36px !important;
  }

  .timeline-card p {
    font-size: 13px;
  }
}

/* roulang page: article */
:root {
            --primary: #6D28D9;
            --primary-light: #8B5CF6;
            --accent: #00D9F5;
            --pink: #FF4D8D;
            --bg: #090B12;
            --surface: #121722;
            --surface-2: #1A2230;
            --border: #232D40;
            --text: #E8ECF4;
            --text-2: #94A3B8;
            --text-3: #64748B;
            --text-body: #CBD5E1;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow: rgba(0,0,0,0.35) 0 8px 24px;
            --shadow-hover: 0 0 0 1px rgba(139,92,246,0.4), rgba(0,0,0,0.4) 0 12px 32px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style-position: inside;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container.narrow {
            max-width: 780px;
        }
        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 44px;
            white-space: nowrap;
            line-height: 1;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(109, 40, 217, 0.4);
        }
        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text);
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-sm {
            padding: 8px 18px;
            min-height: 36px;
            font-size: 14px;
        }
        .btn-ghost {
            color: var(--accent);
            border-color: rgba(0, 217, 245, 0.4);
            background: transparent;
        }
        .btn-ghost:hover {
            background: rgba(0, 217, 245, 0.1);
            border-color: var(--accent);
        }
        .btn-glow {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
        }
        .btn-glow:hover {
            box-shadow: 0 0 24px rgba(0, 217, 245, 0.35);
            transform: translateY(-2px);
        }
        /* ========== 标签 ========== */
        .tag {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            line-height: 1;
        }
        .tag-cyan {
            border: 1px solid rgba(0, 217, 245, 0.4);
            color: var(--accent);
            background: rgba(0, 217, 245, 0.08);
        }
        .tag-pink {
            background: var(--pink);
            color: #fff;
            border: none;
        }
        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 64px;
            background: rgba(9, 11, 18, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(35, 45, 64, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 32px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo-main {
            font-size: 26px;
            font-weight: 900;
            background: linear-gradient(135deg, #E8ECF4 0%, #00D9F5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
            line-height: 1;
        }
        .logo-sub {
            font-size: 12px;
            color: var(--text-2);
            letter-spacing: 0.06em;
            line-height: 1.2;
            border-left: 1px solid var(--border);
            padding-left: 8px;
            font-weight: 400;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-item {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-2);
            padding: 6px 2px;
            position: relative;
            transition: color 0.2s ease;
        }
        .nav-item:hover {
            color: var(--text);
        }
        .nav-item.active {
            color: var(--text);
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: var(--radius-sm);
            background: var(--surface);
            border: 1px solid var(--border);
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding: 18px 0 6px;
            border-bottom: 1px solid rgba(35, 45, 64, 0.4);
            background: rgba(18, 23, 34, 0.4);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-3);
        }
        .breadcrumb a {
            color: var(--text-3);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--text-3);
            opacity: 0.5;
        }
        .breadcrumb .current {
            color: var(--text-2);
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        /* ========== 文章页面 ========== */
        .article-main {
            padding-bottom: 60px;
        }
        .article-page {
            padding: 48px 0 32px;
        }
        .article-head {
            text-align: center;
            margin-bottom: 32px;
        }
        .article-head .tag {
            margin-bottom: 16px;
        }
        .article-head h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: var(--text-2);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item svg {
            width: 16px;
            height: 16px;
        }
        .article-cover {
            margin-bottom: 40px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            position: relative;
            aspect-ratio: 16 / 9;
            background: var(--surface);
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        /* ========== 正文排版 ========== */
        .article-content {
            max-width: 720px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            margin: 40px 0 16px;
            line-height: 1.4;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(35, 45, 64, 0.7);
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: #4DE8FF;
        }
        .article-content ul,
        .article-content ol {
            margin: 20px 0;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
            list-style-position: outside;
        }
        .article-content ul li {
            list-style-type: disc;
        }
        .article-content ol li {
            list-style-type: decimal;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(109, 40, 217, 0.08);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-2);
            font-style: normal;
        }
        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-content code {
            background: var(--surface-2);
            border: 1px solid var(--border);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.875em;
            color: var(--accent);
            font-family: 'SFMono-Regular', Consolas, monospace;
        }
        .article-content pre {
            background: var(--surface-2);
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 24px 0;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            border: none;
            padding: 0;
            color: var(--text-body);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px auto;
            box-shadow: var(--shadow);
        }
        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content th {
            background: var(--surface-2);
            font-weight: 600;
            color: var(--text);
        }
        /* ========== 内容未找到 ========== */
        .not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--surface);
            border: 2px dashed var(--border);
            border-radius: var(--radius-lg);
        }
        .not-found-icon {
            font-size: 48px;
            margin-bottom: 20px;
            color: var(--text-3);
        }
        .not-found h2 {
            font-size: 22px;
            color: var(--text);
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-2);
            margin-bottom: 24px;
        }
        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 56px 0 24px;
            border-top: 1px solid var(--border);
        }
        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 800;
            color: var(--text);
            text-align: center;
            margin-bottom: 32px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            display: block;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(139, 92, 246, 0.5);
        }
        .related-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--surface-2);
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }
        .related-info {
            padding: 16px;
        }
        .related-info h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-date {
            font-size: 13px;
            color: var(--text-3);
        }
        /* ========== 文章底部操作 ========== */
        .article-actions {
            padding: 40px 0 0;
            text-align: center;
        }
        .article-actions .container {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ========== 页脚 ========== */
        .site-footer {
            background: #06080D;
            border-top: 1px solid #1E2636;
            padding: 64px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-3);
            line-height: 1.75;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-2);
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-2);
        }
        .footer-bottom {
            border-top: 1px solid rgba(35, 45, 64, 0.6);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-3);
        }
        .footer-bottom a {
            color: var(--text-3);
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--text-2);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            body {
                font-size: 14px;
            }
            .site-header {
                height: 56px;
            }
            .logo-main {
                font-size: 22px;
            }
            .logo-sub {
                font-size: 11px;
                padding-left: 6px;
            }
            .nav-menu {
                display: none;
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                padding: 24px 20px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
                border-bottom: 1px solid var(--border);
                z-index: 99;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-item {
                display: block;
                padding: 14px 8px;
                font-size: 16px;
                border-bottom: 1px solid rgba(35, 45, 64, 0.4);
                color: var(--text-2);
            }
            .nav-item:last-child {
                border-bottom: none;
            }
            .nav-item.active {
                color: var(--accent);
            }
            .nav-item.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .btn {
                display: none;
            }
            .breadcrumb-wrap {
                padding: 14px 0 4px;
            }
            .article-page {
                padding: 32px 0 20px;
            }
            .article-head h1 {
                font-size: 1.4rem;
                line-height: 1.35;
            }
            .article-meta {
                gap: 14px;
                font-size: 13px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.12rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .article-actions .container {
                flex-direction: column;
                align-items: stretch;
            }
            .article-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                font-size: 12px;
                padding: 20px 12px 0;
            }
        }
        @media (max-width: 400px) {
            .container {
                padding: 0 16px;
            }
            .logo-sub {
                display: none;
            }
            .article-head h1 {
                font-size: 1.25rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 6px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #6D28D9;
            --primary-light: #8B5CF6;
            --accent: #00D9F5;
            --highlight: #FF4D8D;
            --bg: #090B12;
            --surface: #121722;
            --surface-2: #1A2230;
            --border: #232D40;
            --text: #E8ECF4;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-body: #CBD5E1;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: rgba(0, 0, 0, 0.35) 0 8px 24px;
            --shadow-hover: 0 0 0 1px rgba(139, 92, 246, 0.4), rgba(0, 0, 0, 0.4) 0 12px 32px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9375rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.35);
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text);
            background: transparent;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            box-shadow: 0 4px 24px rgba(0, 217, 245, 0.25);
            padding: 14px 32px;
            font-size: 1rem;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 217, 245, 0.4);
        }

        .btn-sm {
            padding: 8px 18px;
            min-height: 36px;
            font-size: 0.875rem;
        }

        /* ========== 徽章 / 标签 ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            height: 24px;
            padding: 0 12px;
            letter-spacing: 0.04em;
            background: rgba(0, 217, 245, 0.15);
            border: 1px solid rgba(0, 217, 245, 0.4);
            color: var(--accent);
        }

        .badge-hot {
            background: var(--highlight);
            border-color: var(--highlight);
            color: #fff;
        }

        .badge-new {
            background: rgba(139, 92, 246, 0.3);
            border-color: var(--primary-light);
            color: #c4b5fd;
        }

        /* ========== 顶栏 Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(9, 11, 18, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(35, 45, 64, 0.6);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo-main {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text);
            background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.02em;
        }

        .logo-sub {
            font-size: 0.75rem;
            color: var(--text-secondary);
            letter-spacing: 0.08em;
            font-weight: 500;
            white-space: nowrap;
        }

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

        .nav-item {
            position: relative;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 2px;
            transition: var(--transition);
        }

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

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

        .nav-item.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 217, 245, 0.6);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 4px;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--bg);
            z-index: 99;
            padding: 80px 32px 32px;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu-item {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .mobile-menu-item.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* ========== Hero ========== */
        .category-hero {
            position: relative;
            padding: 100px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            text-align: center;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(9, 11, 18, 0.94) 0%, rgba(26, 16, 53, 0.88) 55%, rgba(14, 42, 51, 0.92) 100%);
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: radial-gradient(ellipse at center, rgba(255, 77, 141, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .category-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .category-hero .breadcrumb .current {
            color: var(--text-secondary);
        }

        .category-hero h1 {
            font-size: clamp(2.1rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
        }

        .category-hero .hero-desc {
            max-width: 680px;
            margin: 0 auto 36px;
            font-size: 1.0625rem;
            line-height: 1.75;
            color: var(--text-body);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-top: 44px;
            flex-wrap: wrap;
        }

        .hero-stats .stat-item {
            text-align: center;
            padding: 12px 20px;
            background: rgba(18, 23, 34, 0.66);
            border: 1px solid rgba(35, 45, 64, 0.8);
            border-radius: var(--radius-md);
            min-width: 130px;
        }

        .hero-stats .stat-item strong {
            display: block;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.4;
        }

        .hero-stats .stat-item span {
            font-size: 0.8125rem;
            color: var(--text-secondary);
        }

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

        .scroll-hint {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 36px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: 12px;
            z-index: 3;
            animation: breathe 2s ease-in-out infinite;
        }

        .scroll-hint::before {
            content: '';
            position: absolute;
            top: 6px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 8px;
            background: var(--accent);
            border-radius: 4px;
        }

        @keyframes breathe {
            0%,
            100% {
                opacity: 0.6;
                transform: translateX(-50%) translateY(0);
            }
            50% {
                opacity: 1;
                transform: translateX(-50%) translateY(6px);
            }
        }

        /* ========== 通用板块标题 ========== */
        .section {
            padding: 80px 0;
        }

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

        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-header .section-subtitle {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
        }

        .section-divider {
            width: 64px;
            height: 3px;
            margin: 16px auto 0;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
        }

        /* ========== 游戏类型网格 ========== */
        .game-types {
            background: var(--bg);
            padding: 80px 0;
        }

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

        .game-type-card {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .game-type-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(139, 92, 246, 0.6);
        }

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

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

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

        .game-type-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--surface) 0%, transparent 60%);
        }

        .game-type-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .game-type-card .card-img .badge-hot {
            position: absolute;
            top: 12px;
            right: 12px;
            left: auto;
            z-index: 2;
        }

        .game-type-card .card-body {
            padding: 20px 24px 24px;
        }

        .game-type-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .game-type-card .card-desc {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .game-type-card .card-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .game-type-card .card-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* ========== 平台特色 ========== */
        .platform-features {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 0;
        }

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

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

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 217, 245, 0.4);
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            margin-bottom: 20px;
            box-shadow: 0 4px 16px rgba(109, 40, 217, 0.35);
        }

        .feature-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ========== 流程步骤 ========== */
        .steps-section {
            padding: 80px 0;
            background: var(--bg);
        }

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

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--border) 0 8px, transparent 8px 16px);
            z-index: 0;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--surface);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent);
            box-shadow: 0 0 0 6px rgba(0, 217, 245, 0.15), 0 4px 16px rgba(0, 217, 245, 0.2);
            position: relative;
        }

        .step-item h3 {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.8125rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, #1A2B52 55%, var(--accent) 130%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 140%;
            background: radial-gradient(ellipse, rgba(255, 77, 141, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .cta-actions .btn-cta {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .cta-actions .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        .cta-actions .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
        }

        .cta-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }

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

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

        .faq-item[open] {
            border-color: rgba(0, 217, 245, 0.4);
            background: var(--surface-2);
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            gap: 16px;
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            line-height: 1;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #06080D;
            border-top: 1px solid #1E2636;
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .footer-desc {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.875rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

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

        .footer-col ul li a {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

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

        .footer-contact li {
            font-size: 0.875rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom {
            border-top: 1px solid #1E2636;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p,
        .footer-bottom a {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }
            .steps-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 767px) {
            .nav-menu {
                display: none;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .category-hero {
                padding: 60px 0 64px;
                min-height: 440px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 12px;
            }
            .hero-stats .stat-item {
                min-width: 100px;
                padding: 10px 14px;
            }
            .game-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .category-hero .breadcrumb {
                font-size: 0.75rem;
            }
            .btn {
                min-height: 48px;
            }
        }

        @media (max-width: 520px) {
            .logo-main {
                font-size: 1.25rem;
            }
            .logo-sub {
                font-size: 0.6875rem;
            }
            .category-hero h1 {
                font-size: 1.75rem;
            }
            .category-hero .hero-desc {
                font-size: 0.9375rem;
            }
            .hero-actions .btn {
                padding: 12px 16px;
                font-size: 0.875rem;
            }
            .hero-stats .stat-item strong {
                font-size: 1.125rem;
            }
            .hero-stats .stat-item span {
                font-size: 0.75rem;
            }
            .faq-item summary {
                font-size: 0.9375rem;
                padding: 16px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.8125rem;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#6D28D9;
  --primary-light:#8B5CF6;
  --accent:#00D9F5;
  --pink:#FF4D8D;
  --bg:#090B12;
  --surface:#121722;
  --surface-2:#1A2230;
  --border:#232D40;
  --text:#E8ECF4;
  --text-secondary:#94A3B8;
  --text-muted:#64748B;
  --text-body:#CBD5E1;
  --success:#10B981;
  --warning:#F59E0B;
  --danger:#EF4444;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-card:0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover:0 0 0 1px rgba(139,92,246,0.4),0 12px 32px rgba(0,0,0,0.4);
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text-body);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .3s ease}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:767px){.container{padding:0 16px}}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(9,11,18,0.85);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  height:64px;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
  gap:16px;
}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo-main{
  font-size:24px;
  font-weight:900;
  line-height:1;
  background:linear-gradient(135deg,#E8ECF4 30%,#00D9F5 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  letter-spacing:.02em;
}
.logo-sub{
  font-size:12px;
  color:var(--text-secondary);
  letter-spacing:.04em;
  border-left:1px solid var(--border);
  padding-left:10px;
  line-height:1.4;
  white-space:nowrap;
}
.nav-menu{display:flex;gap:28px;align-items:center}
.nav-item{
  position:relative;
  font-size:14px;
  font-weight:500;
  color:var(--text-secondary);
  padding:8px 2px;
  transition:color .3s;
  white-space:nowrap;
}
.nav-item:hover{color:var(--text)}
.nav-item.active{color:var(--text)}
.nav-item.active::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:100%;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  box-shadow:0 0 8px rgba(0,217,245,0.4);
}
.header-right{display:flex;align-items:center;gap:12px}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  padding:8px 22px;
  border-radius:var(--radius-sm);
  min-height:36px;
  transition:background .3s,transform .2s,box-shadow .3s;
  white-space:nowrap;
}
.header-cta:hover{
  background:var(--primary-light);
  transform:translateY(-1px);
  box-shadow:0 0 16px rgba(139,92,246,0.35);
}
.nav-toggle{
  display:none;
  background:none;
  border:none;
  width:40px;
  height:40px;
  cursor:pointer;
  position:relative;
  padding:10px;
}
.nav-toggle span{
  display:block;
  width:20px;
  height:2px;
  background:var(--text);
  margin:4px auto;
  border-radius:2px;
  transition:transform .3s,opacity .3s;
}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-cta{display:none}

@media(max-width:1023px){
  .nav-menu{gap:16px}
  .nav-item{font-size:13px}
}
@media(max-width:767px){
  .site-header{height:56px}
  .logo-main{font-size:20px}
  .logo-sub{font-size:11px;padding-left:6px}
  .header-cta{display:none}
  .nav-toggle{display:block}
  .nav-menu{
    position:fixed;
    top:56px;
    left:0;
    right:0;
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    padding:10px 24px 16px;
    gap:0;
    transform:translateY(-130%);
    opacity:0;
    visibility:hidden;
    transition:transform .35s ease,opacity .3s,visibility .3s;
    border-bottom:1px solid var(--border);
    box-shadow:0 20px 40px rgba(0,0,0,0.5);
  }
  .nav-menu.open{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
  }
  .nav-item{
    padding:13px 0;
    font-size:16px;
    border-bottom:1px solid rgba(35,45,64,0.6);
  }
  .nav-item:last-of-type{border-bottom:none}
  .nav-item.active::after{display:none}
  .nav-item.active{color:var(--accent)}
  .mobile-cta{
    display:flex;
    margin-top:14px;
    justify-content:center;
    background:var(--primary);
    color:#fff;
    padding:12px;
    border-radius:var(--radius-sm);
    font-weight:600;
    font-size:15px;
  }
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:580px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:linear-gradient(135deg,#0B0F17 0%,#1A1035 50%,#0E2A33 100%);
  overflow:hidden;
  padding:80px 0 60px;
}
.hero::before{
  content:'';
  position:absolute;
  top:-30%;
  right:-10%;
  width:520px;
  height:520px;
  background:radial-gradient(circle,rgba(255,77,141,0.18) 0%,transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:'';
  position:absolute;
  bottom:-20%;
  left:-5%;
  width:400px;
  height:400px;
  background:radial-gradient(circle,rgba(0,217,245,0.12) 0%,transparent 70%);
  pointer-events:none;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:0.14;
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:820px;
  margin:0 auto;
  padding:20px 24px;
}
.hero-badge{
  display:inline-block;
  background:rgba(0,217,245,0.12);
  border:1px solid rgba(0,217,245,0.4);
  color:var(--accent);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  padding:5px 18px;
  border-radius:24px;
  margin-bottom:24px;
}
.hero h1{
  font-size:clamp(2.1rem,5vw,3.4rem);
  font-weight:900;
  line-height:1.18;
  color:var(--text);
  margin-bottom:20px;
  letter-spacing:.01em;
}
.hero-sub{
  font-size:16px;
  color:var(--text-body);
  max-width:640px;
  margin:0 auto 36px;
  line-height:1.85;
}
.hero-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.btn-primary,.btn-outline,.btn-white{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:600;
  padding:12px 30px;
  border-radius:var(--radius-sm);
  min-height:44px;
  cursor:pointer;
  border:none;
  transition:all .3s ease;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--primary-light);
  transform:translateY(-2px);
  box-shadow:0 0 24px rgba(139,92,246,0.4);
}
.btn-outline{
  background:transparent;
  color:var(--text);
  border:1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover{
  background:rgba(255,255,255,0.08);
  border-color:rgba(255,255,255,0.45);
  transform:translateY(-2px);
}
.btn-white{
  background:#fff;
  color:var(--primary);
}
.btn-white:hover{
  background:#E8ECF4;
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,0.25);
}
.hero-stats{
  display:flex;
  gap:48px;
  justify-content:center;
  margin-top:48px;
  flex-wrap:wrap;
}
.hero-stat{
  text-align:center;
}
.hero-stat strong{
  display:block;
  font-size:28px;
  font-weight:900;
  color:var(--text);
  line-height:1.2;
  background:linear-gradient(180deg,#E8ECF4,#94A3B8);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-stat span{
  font-size:13px;
  color:var(--text-secondary);
  letter-spacing:.04em;
}
@media(max-width:767px){
  .hero{min-height:auto;padding:60px 0 40px}
  .hero-stats{gap:24px;margin-top:32px}
  .hero-stat strong{font-size:20px}
}

/* ===== Section base ===== */
.section{padding:80px 0}
.section-alt{background:#0B0F17}
.section-header{
  text-align:center;
  margin-bottom:48px;
}
.section-header h2{
  font-size:clamp(1.5rem,3vw,2.1rem);
  font-weight:800;
  color:var(--text);
  margin-bottom:12px;
  line-height:1.3;
}
.section-header p{
  color:var(--text-secondary);
  max-width:640px;
  margin:0 auto;
  font-size:15px;
}
@media(max-width:767px){
  .section{padding:48px 0}
  .section-header{margin-bottom:28px}
}

/* ===== Features ===== */
.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px 28px;
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(139,92,246,0.5);
}
.feature-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  margin-bottom:22px;
  box-shadow:0 4px 16px rgba(109,40,217,0.3);
}
.feature-icon svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.feature-card p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.75;
}
@media(max-width:1023px){
  .features-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:767px){
  .features-grid{grid-template-columns:1fr;gap:16px}
  .feature-card{padding:24px 20px}
}

/* ===== Directions ===== */
.directions-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.direction-card{
  display:flex;
  gap:20px;
  background:var(--surface);
  border-radius:var(--radius-md);
  padding:20px;
  border:1px solid var(--border);
  transition:border-color .3s,transform .3s,box-shadow .3s;
  align-items:flex-start;
}
.direction-card:hover{
  border-color:var(--accent);
  transform:translateY(-3px);
  box-shadow:0 0 0 1px rgba(0,217,245,0.25),0 12px 28px rgba(0,0,0,0.35);
}
.direction-card img{
  width:136px;
  height:100px;
  object-fit:cover;
  border-radius:10px;
  flex-shrink:0;
  border:1px solid var(--border);
}
.direction-content{
  min-width:0;
}
.direction-tag{
  display:inline-block;
  font-size:12px;
  color:var(--accent);
  background:rgba(0,217,245,0.08);
  border:1px solid rgba(0,217,245,0.3);
  padding:2px 12px;
  border-radius:20px;
  margin-bottom:8px;
  letter-spacing:.03em;
}
.direction-content h3{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin-bottom:6px;
}
.direction-content p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
}
@media(max-width:767px){
  .directions-grid{grid-template-columns:1fr;gap:16px}
  .direction-card{flex-direction:column;padding:16px}
  .direction-card img{width:100%;height:140px}
}

/* ===== Process Timeline ===== */
.about-process{padding:80px 0}
.timeline{
  position:relative;
  max-width:880px;
  margin:0 auto;
  padding:30px 0;
}
.timeline::before{
  content:'';
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  background:var(--border);
  transform:translateX(-50%);
}
.timeline-item{
  position:relative;
  width:calc(50% - 40px);
  padding:24px 28px;
  background:var(--surface);
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  transition:border-color .3s,box-shadow .3s;
  margin-bottom:32px;
}
.timeline-item:last-child{margin-bottom:0}
.timeline-item:hover{
  border-color:rgba(0,217,245,0.4);
  box-shadow:0 0 0 1px rgba(0,217,245,0.2),0 12px 28px rgba(0,0,0,0.3);
}
.timeline-item:nth-child(odd){left:0;text-align:right}
.timeline-item:nth-child(even){left:calc(50% + 40px)}
.timeline-step{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:50%;
  background:var(--surface);
  border:2px solid var(--accent);
  font-size:14px;
  font-weight:800;
  color:var(--accent);
  box-shadow:0 0 14px rgba(0,217,245,0.25);
  position:absolute;
  top:24px;
}
.timeline-item:nth-child(odd) .timeline-step{right:-58px}
.timeline-item:nth-child(even) .timeline-step{left:-58px}
.timeline-item h3{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.timeline-item p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
}
@media(max-width:767px){
  .timeline::before{left:18px;transform:none}
  .timeline-item{
    width:100%;
    left:0!important;
    text-align:left!important;
    padding:20px 20px 20px 56px;
    margin-left:36px;
    margin-bottom:16px;
  }
  .timeline-item .timeline-step{
    left:-28px!important;
    right:auto!important;
    top:20px;
  }
  .timeline-item h3{font-size:16px}
}

/* ===== Tags ===== */
.tags-section{
  background:var(--surface-2);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
  max-width:800px;
  margin:0 auto;
}
.tag{
  display:inline-block;
  padding:6px 20px;
  border-radius:24px;
  font-size:13px;
  color:var(--text-secondary);
  background:var(--surface);
  border:1px solid var(--border);
  transition:all .3s ease;
  cursor:pointer;
}
.tag:hover{
  color:var(--accent);
  border-color:var(--accent);
  background:rgba(0,217,245,0.06);
  transform:translateY(-2px);
}

/* ===== FAQ ===== */
.faq-list{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s,box-shadow .3s;
}
.faq-item.open{
  border-color:rgba(0,217,245,0.5);
  box-shadow:0 0 0 1px rgba(137,139,246,0.12),0 8px 24px rgba(0,0,0,0.3);
}
.faq-question{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  background:none;
  border:none;
  width:100%;
  text-align:left;
  transition:color .3s;
}
.faq-question:hover{color:var(--accent)}
.faq-icon{
  width:24px;
  height:24px;
  position:relative;
  flex-shrink:0;
  border-radius:50%;
  background:rgba(0,217,245,0.1);
  border:1px solid rgba(0,217,245,0.3);
}
.faq-icon::before,.faq-icon::after{
  content:'';
  position:absolute;
  background:var(--accent);
  border-radius:2px;
  transition:transform .3s;
}
.faq-icon::before{
  width:2px;
  height:12px;
  top:5px;
  left:10px;
}
.faq-icon::after{
  width:12px;
  height:2px;
  top:10px;
  left:5px;
}
.faq-item.open .faq-icon::before{transform:rotate(90deg)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-answer-inner{
  padding:0 24px 24px;
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
  border-top:1px solid rgba(35,45,64,0.5);
  padding-top:16px;
  margin-top:-2px;
}
@media(max-width:767px){
  .faq-question{font-size:15px;padding:16px 18px}
  .faq-answer-inner{padding:0 18px 18px;font-size:14px}
}

/* ===== CTA ===== */
.cta-wrapper{padding:60px 0 80px}
@media(max-width:767px){.cta-wrapper{padding:40px 0 48px}}
.cta-section{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 50%,#00A9C4 100%);
  border-radius:var(--radius-lg);
  padding:64px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  top:-60%;
  right:-20%;
  width:400px;
  height:400px;
  background:radial-gradient(circle,rgba(255,255,255,0.18) 0%,transparent 70%);
  pointer-events:none;
}
.cta-section h2{
  color:#fff;
  font-size:clamp(1.5rem,3vw,2rem);
  font-weight:800;
  margin-bottom:16px;
  position:relative;
}
.cta-section p{
  color:rgba(255,255,255,0.92);
  margin-bottom:32px;
  max-width:520px;
  margin-left:auto;
  margin-right:auto;
  font-size:15px;
  position:relative;
}
.cta-section .btn-white{position:relative}
@media(max-width:767px){
  .cta-section{padding:40px 20px;border-radius:12px}
}

/* ===== Footer ===== */
.site-footer{
  background:#06080D;
  border-top:1px solid #1E2636;
  padding:60px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-brand .logo{
  margin-bottom:16px;
  display:inline-flex;
}
.footer-desc{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
  max-width:300px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  position:relative;
  padding-bottom:10px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:28px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-secondary);
  transition:color .3s,padding-left .3s;
}
.footer-col ul li a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-contact li{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid #1E2636;
  padding-top:24px;
  text-align:center;
}
.footer-bottom p{
  font-size:12px;
  color:var(--text-muted);
}
.footer-bottom a{
  color:var(--text-secondary);
}
.footer-bottom a:hover{
  color:var(--accent);
}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:40px 0 24px}
  .footer-desc{max-width:100%}
}

/* ===== Reveal ===== */
.section{position:relative}
.feature-card:focus-visible,.tag:focus-visible,.btn:focus-visible,.nav-item:focus-visible,.faq-question:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}