/* roulang page: index */
/* ===== Design Tokens ===== */
:root {
  --bg-primary: #0A101E;
  --bg-surface: rgba(255, 255, 255, 0.06);
  --bg-surface-hover: rgba(255, 255, 255, 0.10);
  --brand-primary: #00E0FF;
  --brand-secondary: #0090FF;
  --accent-gold: #F6C453;
  --success: #2EE6A8;
  --warning: #FFB020;
  --danger: #FF5D73;
  --text-primary: #F2F7FF;
  --text-secondary: #A8B6CF;
  --text-muted: #5A6B85;
  --border-color: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.24);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 12px;
  --radius-badge: 999px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-btn: 0 0 24px rgba(0, 224, 255, 0.35);
  --container-width: 1200px;
  --content-width: 760px;
  --space-section: 96px;
  --space-section-mobile: 56px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: #66E9FF;
}

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

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

ul {
  list-style: none;
}

/* ===== Layout Helpers ===== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--space-section) 0;
  position: relative;
}

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

.section-header .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand-primary);
  background: rgba(0, 224, 255, 0.10);
  border: 1px solid rgba(0, 224, 255, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* ===== Glass Card ===== */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  transition: all 0.3s ease;
  line-height: 1.2;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #06121F;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px rgba(0, 224, 255, 0.55);
  color: #06121F;
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 12px rgba(0, 224, 255, 0.25);
}

.btn-glass {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text-primary);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 224, 255, 0.6);
  color: var(--brand-primary);
}

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

.btn-small {
  padding: 9px 20px;
  font-size: 14px;
}

/* ===== Badges & Tags ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge-brand {
  background: rgba(0, 224, 255, 0.15);
  color: var(--brand-primary);
  border: 1px solid rgba(0, 224, 255, 0.30);
}

.badge-soft {
  background: rgba(255, 255, 255, 0.10);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-success {
  background: rgba(46, 230, 168, 0.15);
  color: var(--success);
  border: 1px solid rgba(46, 230, 168, 0.30);
}

.badge-warning {
  background: rgba(255, 176, 32, 0.12);
  color: var(--warning);
  border: 1px solid rgba(255, 176, 32, 0.30);
}

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-badge);
  z-index: 2;
  letter-spacing: 0.04em;
}

.tag-hot {
  background: linear-gradient(135deg, #FF5D73, #FF8A5C);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 93, 115, 0.4);
}

.tag-time {
  background: linear-gradient(135deg, var(--accent-gold), #FFB020);
  color: #2A1A00;
  box-shadow: 0 4px 16px rgba(246, 196, 83, 0.35);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 16, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.header-main {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

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

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #06121F;
  font-size: 18px;
  box-shadow: 0 0 16px rgba(0, 224, 255, 0.35);
}

.brand-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

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

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.10);
  transition: all 0.3s ease;
  font-size: 15px;
}

.icon-btn:hover {
  color: var(--brand-primary);
  border-color: rgba(0, 224, 255, 0.50);
  background: rgba(0, 224, 255, 0.08);
}

.menu-toggle {
  display: none;
}

.header-nav {
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.nav-links {
  display: flex;
  gap: 8px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  border-radius: var(--radius-badge);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.3s ease;
}

.nav-link:hover {
  color: var(--brand-primary);
  box-shadow: 0 0 0 1px rgba(0, 224, 255, 0.50);
  background: rgba(0, 224, 255, 0.06);
}

.nav-link.active {
  color: var(--brand-primary);
  background: rgba(0, 224, 255, 0.10);
  border-color: rgba(0, 224, 255, 0.40);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  background:
    radial-gradient(ellipse at center, rgba(0, 224, 255, 0.18) 0%, rgba(10, 16, 30, 0.35) 45%, rgba(10, 16, 30, 0.90) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 80px 24px;
  flex: 1;
  display: flex;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-gold);
  background: rgba(246, 196, 83, 0.10);
  border: 1px solid rgba(246, 196, 83, 0.25);
  padding: 7px 18px;
  border-radius: var(--radius-badge);
  margin-bottom: 22px;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 36px;
}

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

.hero-trust {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(10, 16, 30, 0.35);
  backdrop-filter: blur(8px);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  padding: 18px 24px;
  justify-content: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.trust-item i {
  color: var(--brand-primary);
  font-size: 15px;
}

/* ===== 玩法介绍 Steps ===== */
.how-section {
  background: var(--bg-primary);
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.how-steps::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(0, 224, 255, 0.40), rgba(0, 224, 255, 0.20), transparent);
  transform: translateX(-50%);
}

.step-item {
  position: relative;
  padding: 32px 40px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  width: calc(85%);
  margin-left: 0;
  border-radius: var(--radius-card);
}

.how-steps .step-item:nth-child(2) {
  margin-left: auto;
}

.step-number {
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  color: rgba(0, 224, 255, 0.15);
  letter-spacing: 0.02em;
  min-width: 90px;
  user-select: none;
}

.step-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 224, 255, 0.15), rgba(0, 144, 255, 0.10));
  border: 1px solid rgba(0, 224, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--brand-primary);
}

.step-item h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.step-item p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== 奖励预览 ===== */
.rewards-section {
  background:
    radial-gradient(circle at 80% 20%, rgba(246, 196, 83, 0.05), transparent 50%),
    var(--bg-primary);
}

.rewards-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 4px 24px;
  scrollbar-width: none;
}

.rewards-scroll::-webkit-scrollbar {
  display: none;
}

.reward-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
}

.reward-card-lg {
  flex: 0 0 380px;
}

.reward-media {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16/10;
}

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

.reward-card:hover .reward-media img {
  transform: scale(1.04);
}

.reward-body {
  padding: 18px 4px 0;
}

.reward-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.reward-body p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.reward-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 12px;
}

.reward-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--accent-gold);
}

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

/* ===== 任务进度 ===== */
.task-section {
  background: var(--bg-primary);
}

.task-list {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 28px;
  border-radius: var(--radius-card);
  flex-wrap: wrap;
}

.task-icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-size: 18px;
}

.task-info {
  flex: 1;
  min-width: 200px;
}

.task-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}

.task-info p {
  color: var(--text-secondary);
  font-size: 13px;
}

.task-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 180px;
  flex: 1;
}

.progress-bar {
  height: 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.10);
  overflow: hidden;
  flex: 1;
  min-width: 80px;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--brand-primary), var(--success));
  transition: width 0.6s ease;
}

.progress-text {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 40px;
  text-align: right;
}

.task-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.task-reward {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent-gold);
  font-weight: 600;
}

.task-cta {
  text-align: center;
  margin-top: 36px;
}

/* ===== 最新资讯 ===== */
.news-section {
  background:
    radial-gradient(ellipse at 20% 80%, rgba(0, 224, 255, 0.06), transparent 50%),
    var(--bg-primary);
}

.news-feature-card {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  overflow: hidden;
  border-radius: var(--radius-card);
}

.news-feature-media {
  flex: 0 0 42%;
  min-height: 280px;
  overflow: hidden;
  position: relative;
}

.news-feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.news-feature-body {
  flex: 1;
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

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

.news-feature-body h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

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

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

.news-feature-body > p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
}

.read-more-link i {
  transition: transform 0.3s ease;
}

.read-more-link:hover i {
  transform: translateX(4px);
}

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

.news-list-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  border-radius: var(--radius-card);
}

.news-list-thumb {
  flex-shrink: 0;
  width: 84px;
  height: 84px;
  border-radius: 12px;
  overflow: hidden;
}

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

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

.news-list-content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.news-list-content h3 a {
  color: var(--text-primary);
}

.news-list-content h3 a:hover {
  color: var(--brand-primary);
}

.news-list-content p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.news-list-content .news-meta {
  margin-bottom: 0;
}

.empty-state {
  text-align: center;
  padding: 64px 24px;
  border-radius: var(--radius-card);
  max-width: 640px;
  margin: 0 auto;
}

.empty-state i {
  font-size: 44px;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* ===== 关于我们 ===== */
.about-section {
  background: var(--bg-primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-media {
  border-radius: var(--radius-card);
  min-height: 380px;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  position: relative;
  overflow: hidden;
}

.about-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(0, 224, 255, 0.08), rgba(10, 16, 30, 0.2));
}

.about-content {
  padding-right: 20px;
}

.about-content .section-tag {
  display: inline-flex;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand-primary);
  background: rgba(0, 224, 255, 0.10);
  border: 1px solid rgba(0, 224, 255, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 14px;
}

.about-content h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.stat-item {
  flex: 1;
  min-width: 120px;
}

.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

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

/* ===== CTA 区 ===== */
.cta-section {
  background:
    radial-gradient(ellipse at center, rgba(246, 196, 83, 0.10), transparent 60%),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 16, 30, 0.72);
}

.cta-panel {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 48px;
  border-radius: var(--radius-card);
}

.cta-panel h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.cta-panel > p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

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

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

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  background: transparent;
  transition: color 0.3s ease;
}

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

.faq-question i {
  font-size: 14px;
  color: var(--text-secondary);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}

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

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--brand-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer p {
  padding: 0 28px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ===== Footer ===== */
.site-footer {
  background: rgba(8, 12, 24, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.footer-logo i {
  color: var(--brand-primary);
  font-size: 22px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-primary), transparent);
  border-radius: 2px;
}

.footer-col ul li {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

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

.footer-col ul li i {
  width: 20px;
  color: var(--brand-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Media Queries ===== */
@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }

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

  .hero-title {
    font-size: 38px;
  }

  .about-grid {
    gap: 32px;
  }

  .about-media {
    min-height: 300px;
  }

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

  .reward-card-lg {
    flex-basis: 320px;
  }

  .news-feature-media {
    flex-basis: 38%;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .header-main-inner {
    height: 64px;
  }

  .menu-toggle {
    display: flex;
  }

  .header-nav {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
  }

  .header-nav.open {
    max-height: 300px;
    opacity: 1;
  }

  .nav-links {
    flex-direction: column;
    padding: 12px 24px 20px;
  }

  .nav-link {
    width: 100%;
    justify-content: center;
  }

  .hero {
    min-height: 70vh;
  }

  .hero-inner {
    padding: 60px 24px;
  }

  .hero-title {
    font-size: 28px;
  }

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

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

  .how-steps::before {
    left: 24px;
  }

  .step-item {
    width: 100%;
    margin-left: 0 !important;
    padding: 24px;
    flex-direction: column;
    gap: 12px;
    border-radius: 16px;
  }

  .step-number {
    font-size: 42px;
    min-width: auto;
  }

  .rewards-scroll {
    gap: 16px;
  }

  .reward-card,
  .reward-card-lg {
    flex-basis: 260px;
  }

  .task-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
  }

  .task-info,
  .task-progress {
    width: 100%;
    min-width: 0;
    flex: none;
  }

  .task-status {
    flex-direction: row;
    align-items: center;
    width: 100%;
    justify-content: space-between;
  }

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

  .news-feature-media {
    flex-basis: auto;
    height: 220px;
    min-height: 0;
  }

  .news-feature-body {
    padding: 24px;
  }

  .news-feature-body h3 {
    font-size: 20px;
  }

  .news-list-item {
    flex-direction: row;
    padding: 16px;
    gap: 14px;
  }

  .news-list-thumb {
    width: 64px;
    height: 64px;
  }

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

  .about-media {
    min-height: 240px;
  }

  .about-content {
    padding-right: 0;
  }

  .about-stats {
    gap: 16px;
  }

  .cta-panel {
    padding: 40px 24px;
  }

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

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

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

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

  .section-header h2 {
    font-size: 26px;
  }

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

  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }

  .header-actions {
    gap: 8px;
  }

  .btn-small,
  .btn-lg {
    padding: 12px 20px;
    font-size: 14px;
  }

  .header-actions .btn-small {
    display: none;
  }

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

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

  .trust-strip {
    padding: 14px 16px;
    gap: 8px 16px;
  }

  .trust-item {
    font-size: 13px;
  }

  .step-item {
    padding: 20px;
  }

  .step-number {
    font-size: 34px;
  }

  .step-icon {
    width: 42px;
    height: 42px;
    font-size: 17px;
  }

  .reward-card,
  .reward-card-lg {
    flex-basis: 240px;
  }

  .news-feature-body {
    padding: 20px;
  }

  .news-feature-body h3 {
    font-size: 18px;
  }

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

  .news-list-thumb {
    width: 100%;
    height: 140px;
    border-radius: 10px;
  }

  .cta-panel {
    padding: 32px 16px;
    border-radius: 14px;
  }

  .cta-panel h2 {
    font-size: 24px;
  }

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

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer p {
    padding: 0 20px 18px;
    font-size: 14px;
  }

  .footer-grid {
    gap: 24px;
  }

  .footer-col h4 {
    margin-bottom: 14px;
  }
}

/* roulang page: article */
:root{
  --bg:#0A101E;
  --surface:rgba(255,255,255,0.06);
  --surface-hover:rgba(255,255,255,0.10);
  --primary:#00E0FF;
  --primary-deep:#0090FF;
  --accent:#F6C453;
  --success:#2EE6A8;
  --warning:#FFB020;
  --danger:#FF5D73;
  --text:#F2F7FF;
  --text-sub:#A8B6CF;
  --text-mute:#5A6B85;
  --border:rgba(255,255,255,0.10);
  --border-light:rgba(255,255,255,0.24);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --radius-badge:999px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --shadow-glow:0 0 24px rgba(0,224,255,0.35);
  --font-stack:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .25s}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-narrow{width:100%;max-width:760px;margin:0 auto;padding:0 24px}

/* 按钮 */
.btn-primary,.btn-outline,.btn-header{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;font-weight:600;border-radius:var(--radius-btn);
  transition:all .3s ease;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#00E0FF,#0090FF);
  color:#06121F;padding:14px 28px;font-size:15px;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#06121F;filter:brightness(1.12);transform:translateY(-2px);box-shadow:0 6px 30px rgba(0,224,255,0.5)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(0,224,255,0.3)}
.btn-outline{
  background:transparent;border:1px solid var(--border-light);color:var(--text);
  padding:14px 28px;font-size:15px;backdrop-filter:blur(6px);
}
.btn-outline:hover{background:rgba(255,255,255,0.08);border-color:var(--primary);color:var(--primary)}
.btn-header{
  background:linear-gradient(135deg,#00E0FF,#0090FF);color:#06121F;
  padding:7px 18px;font-size:13px;border-radius:var(--radius-btn);box-shadow:var(--shadow-glow);
}
.btn-header:hover{filter:brightness(1.12);transform:translateY(-1px)}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,16,30,0.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 8px 32px rgba(0,0,0,0.4)}
.header-top{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 0;
}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,#00E0FF,#0090FF);
  display:flex;align-items:center;justify-content:center;
  color:#06121F;font-size:18px;box-shadow:var(--shadow-glow);
}
.logo-text{
  font-size:20px;font-weight:700;color:var(--text);
  letter-spacing:0.05em;
}
.header-actions{display:flex;align-items:center;gap:12px}
.search-toggle{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border-light);
  background:rgba(255,255,255,0.06);color:var(--text);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:all .25s;
}
.search-toggle:hover{border-color:var(--primary);color:var(--primary)}
.menu-toggle{
  display:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--border-light);
  background:rgba(255,255,255,0.06);color:var(--text);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-links{
  display:flex;align-items:center;gap:6px;
  padding-bottom:14px;flex-wrap:wrap;
}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 20px;border-radius:var(--radius-badge);
  font-size:14px;font-weight:500;color:var(--text-sub);
  border:1px solid transparent;transition:all .25s;
}
.nav-link:hover{
  color:var(--primary);border-color:rgba(0,224,255,0.5);
  box-shadow:0 0 0 1px rgba(0,224,255,0.3);
}
.nav-link.active{
  background:linear-gradient(135deg,#00E0FF,#0090FF);
  color:#06121F;font-weight:600;box-shadow:var(--shadow-glow);
}
.nav-link.active:hover{color:#06121F}
.nav-link i{font-size:13px;opacity:.8}

/* 面包屑 */
.breadcrumb-wrap{
  padding:20px 0 0;font-size:13px;color:var(--text-sub);
}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-sub);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-mute)}
.breadcrumb .current{color:var(--text);font-weight:500;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 文章顶部横幅 */
.article-banner{
  position:relative;margin:24px 0 40px;border-radius:20px;overflow:hidden;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  min-height:260px;display:flex;align-items:flex-end;
}
.article-banner::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at center,rgba(10,16,30,0.25),rgba(10,16,30,0.82));
}
.article-banner .banner-inner{
  position:relative;z-index:2;padding:36px;
  width:100%;
}
.banner-cat{
  display:inline-block;padding:4px 14px;border-radius:var(--radius-badge);
  background:rgba(0,224,255,0.18);border:1px solid rgba(0,224,255,0.4);
  color:var(--primary);font-size:12px;font-weight:600;letter-spacing:0.04em;
  margin-bottom:14px;
}
.article-banner h1{
  font-size:32px;line-height:1.3;font-weight:700;color:var(--text);
  letter-spacing:0.02em;max-width:720px;
}
.article-meta{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  margin-top:16px;font-size:13px;color:var(--text-sub);
}
.article-meta i{margin-right:5px;color:var(--primary);font-size:13px}

/* 正文区 */
.article-main{padding-bottom:40px}
.article-content{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:40px 44px;
  box-shadow:var(--shadow-card);
  color:var(--text);
  line-height:1.85;
  font-size:16px;
}
.article-content p{margin-bottom:1.2em}
.article-content h2{font-size:26px;margin:1.6em 0 .6em;line-height:1.3;color:var(--text);font-weight:700}
.article-content h3{font-size:21px;margin:1.4em 0 .5em;line-height:1.3;color:var(--text);font-weight:600}
.article-content h4{font-size:18px;margin:1.2em 0 .4em;line-height:1.35;color:var(--text);font-weight:600}
.article-content img{border-radius:12px;margin:24px 0;box-shadow:var(--shadow-card)}
.article-content blockquote{
  border-left:3px solid var(--primary);
  background:rgba(0,224,255,0.08);
  padding:16px 22px;margin:20px 0;border-radius:0 12px 12px 0;
  color:var(--text-sub);font-style:normal;
}
.article-content ul,.article-content ol{margin:1em 0 1.2em;padding-left:0}
.article-content ul li{
  padding-left:22px;position:relative;margin-bottom:.5em;color:var(--text-sub);
}
.article-content ul li::before{
  content:'\f058';font-family:"Font Awesome 6 Free";font-weight:400;
  position:absolute;left:0;top:2px;color:var(--primary);font-size:15px;
}
.article-content ol{counter-reset:article-item}
.article-content ol li{
  padding-left:30px;position:relative;margin-bottom:.5em;counter-increment:article-item;color:var(--text-sub);
}
.article-content ol li::before{
  content:counter(article-item);
  position:absolute;left:0;top:2px;
  width:20px;height:20px;border-radius:50%;
  background:rgba(0,224,255,0.18);color:var(--primary);
  font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-content table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;
}
.article-content th,.article-content td{
  border:1px solid var(--border);padding:12px 15px;text-align:left;
}
.article-content th{background:rgba(0,224,255,0.1);color:var(--text);font-weight:600}
.article-content td{color:var(--text-sub)}

/* 空态 */
.article-empty{
  text-align:center;padding:80px 30px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.article-empty i{font-size:48px;color:var(--text-mute);margin-bottom:18px}
.article-empty p{color:var(--text-sub);font-size:18px;margin-bottom:26px}

/* 相关推荐 */
.related-section{padding:70px 0 40px}
.related-section .section-head{text-align:center;margin-bottom:40px}
.related-section .section-head h2{font-size:30px;font-weight:700;letter-spacing:.02em}
.related-section .section-head p{color:var(--text-sub);margin-top:6px;font-size:15px}
.related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.related-card{
  border-radius:var(--radius-card);overflow:hidden;
  background:var(--surface);border:1px solid var(--border);
  transition:all .35s ease;display:block;
}
.related-card:hover{
  transform:translateY(-6px);background:var(--surface-hover);
  border-color:rgba(0,224,255,0.35);box-shadow:0 12px 40px rgba(0,0,0,0.45);
}
.related-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.related-body{padding:20px 22px}
.related-body h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:10px;color:var(--text);transition:color .25s}
.related-card:hover .related-body h3{color:var(--primary)}
.related-body span{font-size:13px;color:var(--text-mute)}
.related-body span i{margin-right:5px}

/* CTA 区 */
.cta-section{
  position:relative;margin:70px 0 0;padding:80px 0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at center,rgba(0,224,255,0.18),rgba(10,16,30,0.88));
}
.cta-inner{position:relative;z-index:2;text-align:center}
.cta-inner h2{font-size:32px;font-weight:700;margin-bottom:14px;letter-spacing:.02em}
.cta-inner p{color:var(--text-sub);font-size:16px;max-width:600px;margin:0 auto 32px}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* FAQ */
.faq-section{padding:70px 0 30px}
.faq-section .section-head{text-align:center;margin-bottom:40px}
.faq-section .section-head h2{font-size:30px;font-weight:700}
.faq-section .section-head p{color:var(--text-sub);margin-top:6px;font-size:15px}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .3s;
}
.faq-item.active{border-color:rgba(0,224,255,0.4)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 26px;cursor:pointer;font-size:16px;font-weight:600;
  color:var(--text);transition:color .25s;
}
.faq-question i{color:var(--primary);transition:transform .3s;font-size:14px}
.faq-item.active .faq-question{color:var(--primary)}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-answer-inner{padding:0 26px 22px;color:var(--text-sub);font-size:14px;line-height:1.8}

/* 页脚 */
.site-footer{
  background:#070C15;border-top:1px solid var(--border);
  margin-top:70px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;padding:56px 0 40px;
}
.footer-brand .footer-logo{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--text);letter-spacing:.05em;
  margin-bottom:16px;
}
.footer-brand .footer-logo i{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,#00E0FF,#0090FF);
  display:flex;align-items:center;justify-content:center;
  color:#06121F;font-size:16px;box-shadow:var(--shadow-glow);
}
.footer-brand p{color:var(--text-sub);font-size:14px;line-height:1.75;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.03em}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--text-sub)}
.footer-col ul li a{color:var(--text-sub);transition:color .25s}
.footer-col ul li a:hover{color:var(--primary)}
.footer-col ul li i{color:var(--text-mute);margin-right:8px;font-size:13px;width:16px}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0;
}
.footer-bottom-inner{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-mute);
}

/* 响应式 */
@media(max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .menu-toggle{display:flex}
  .nav-links{
    display:none;flex-direction:column;align-items:stretch;
    padding:10px 0 18px;gap:8px;
  }
  .nav-links.open{display:flex}
  .nav-link{justify-content:center;padding:12px 20px}
  .article-banner{min-height:220px}
  .article-banner h1{font-size:26px}
  .article-content{padding:28px 22px}
  .cta-inner h2{font-size:26px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom-inner{flex-direction:column;gap:6px}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .container-narrow{padding:0 16px}
  .header-top{padding:12px 0}
  .logo-text{font-size:17px}
  .logo-icon{width:32px;height:32px;font-size:15px}
  .btn-header{padding:6px 14px;font-size:12px}
  .article-banner .banner-inner{padding:24px 20px}
  .article-banner h1{font-size:22px}
  .article-content{padding:20px 16px;font-size:15px}
  .related-body{padding:16px}
  .cta-section{padding:56px 0}
  .cta-btns .btn-primary,.cta-btns .btn-outline{width:100%}
  .faq-question{padding:18px 20px;font-size:15px}
}

/* roulang page: category1 */
:root {
  --bg: #0A101E;
  --bg-soft: #0D1526;
  --surface: rgba(255,255,255,0.06);
  --surface-hover: rgba(255,255,255,0.10);
  --brand: #00E0FF;
  --brand-secondary: #0090FF;
  --accent: #F6C453;
  --success: #2EE6A8;
  --warning: #FFB020;
  --danger: #FF5D73;
  --text: #F2F7FF;
  --text-secondary: #A8B6CF;
  --text-dim: #5A6B85;
  --border: rgba(255,255,255,0.10);
  --card-border: rgba(255,255,255,0.12);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 12px;
  --radius-badge: 999px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 24px rgba(0,224,255,0.35);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --spacer: 80px;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: #7be9ff;
}

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

button {
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: var(--font-main);
}

ul {
  list-style: none;
}

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

/* ========== HEADER ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 16, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text);
  white-space: nowrap;
}

.brand-logo i {
  color: var(--brand);
  font-size: 24px;
  text-shadow: 0 0 16px rgba(0, 224, 255, 0.5);
}

.brand-logo span {
  background: linear-gradient(135deg, #ffffff 0%, #a8e8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  width: 0;
  opacity: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius-input);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 14px;
  transition: all 0.3s ease;
}

.search-box.open input {
  width: 200px;
  opacity: 1;
  padding: 8px 36px 8px 14px;
  border-color: rgba(0, 224, 255, 0.3);
}

.search-toggle {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  transition: all 0.25s ease;
  font-size: 14px;
}

.search-toggle:hover {
  color: var(--brand);
  border-color: rgba(0, 224, 255, 0.4);
  box-shadow: 0 0 12px rgba(0, 224, 255, 0.2);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--brand), var(--brand-secondary));
  color: #06121F;
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}

.header-cta:hover {
  color: #06121F;
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(0, 224, 255, 0.5);
}

.nav-links {
  display: flex;
  gap: 8px;
  padding: 10px 0 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: var(--radius-badge);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--brand);
  box-shadow: 0 0 0 1px rgba(0, 224, 255, 0.5);
}

.nav-link.active {
  color: var(--brand);
  background: rgba(0, 224, 255, 0.1);
  border-color: rgba(0, 224, 255, 0.3);
  font-weight: 600;
}

/* ========== HERO ========== */
.page-hero {
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 90px 0 80px;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(10, 16, 30, 0.35) 0%, rgba(10, 16, 30, 0.78) 65%, #0A101E 100%);
}

.page-hero::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 224, 255, 0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-badge);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.hero-content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--brand);
  text-shadow: 0 0 30px rgba(0, 224, 255, 0.35);
}

.hero-content p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto 32px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--brand), var(--brand-secondary));
  color: #06121F;
  font-size: 15px;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  color: #06121F;
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(0, 224, 255, 0.55);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s ease;
}

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

.hero-metric {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 56px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-metric .metric-item {
  text-align: center;
}

.hero-metric .metric-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.hero-metric .metric-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ========== SECTION COMMON ========== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-soft);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.section-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--brand);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(0, 224, 255, 0.08);
  border: 1px solid rgba(0, 224, 255, 0.2);
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
}

/* ========== CARDS ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--surface-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  border-color: rgba(255, 255, 255, 0.24);
}

.feature-card .card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(0, 224, 255, 0.1);
  border: 1px solid rgba(0, 224, 255, 0.25);
  color: var(--brand);
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.feature-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 500;
}

.feature-card .card-link i {
  transition: transform 0.25s ease;
}

.feature-card .card-link:hover i {
  transform: translateX(4px);
}

/* ========== TIMELINE ========== */
.steps-section {
  position: relative;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.steps-list::before {
  content: '';
  position: absolute;
  left: 36px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 224, 255, 0.5), rgba(0, 224, 255, 0.05));
}

.step-item {
  display: flex;
  gap: 28px;
  padding: 0 0 48px 0;
  position: relative;
}

.step-item:last-child {
  padding-bottom: 0;
}

.step-num {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg-soft);
  border: 1px solid rgba(0, 224, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--brand);
  box-shadow: 0 0 20px rgba(0, 224, 255, 0.15);
  z-index: 1;
}

.step-content {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  backdrop-filter: blur(12px);
  transition: all 0.25s ease;
}

.step-content:hover {
  background: var(--surface-hover);
  border-color: rgba(0, 224, 255, 0.25);
}

.step-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
}

/* ========== SCENARIO ========== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.scenario-card {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 24px;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.scenario-card:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.scenario-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: rgba(246, 196, 83, 0.1);
  border: 1px solid rgba(246, 196, 83, 0.25);
  color: var(--accent);
}

.scenario-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

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

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(0, 224, 255, 0.25);
}

.faq-item details {
  padding: 0;
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.25s ease;
}

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

.faq-item summary .fa-solid {
  color: var(--brand);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item details[open] summary {
  color: var(--brand);
}

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

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

/* ========== CTA ========== */
.cta-section {
  position: relative;
  text-align: center;
  padding: 80px 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(10, 16, 30, 0.55) 0%, rgba(10, 16, 30, 0.88) 100%);
}

.cta-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(0, 224, 255, 0.08);
  filter: blur(70px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 14px;
}

.cta-inner p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ========== FOOTER ========== */
.site-footer {
  background: #070C17;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 60px;
}

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

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
  color: var(--text);
}

.footer-brand .footer-logo i {
  color: var(--brand);
  margin-right: 6px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

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

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.25s ease;
}

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

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

.footer-col ul li i {
  color: var(--brand);
  width: 16px;
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-dim);
  font-size: 13px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .header-top {
    padding: 12px 0;
  }

  .header-cta span {
    display: none;
  }

  .header-cta {
    padding: 9px 14px;
  }

  .nav-links {
    padding-bottom: 10px;
  }

  .page-hero {
    min-height: 380px;
    padding: 60px 0;
  }

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

  .hero-content p {
    font-size: 15px;
  }

  .hero-metric {
    gap: 28px;
    flex-wrap: wrap;
  }

  .hero-metric .metric-num {
    font-size: 19px;
  }

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

  .steps-list::before {
    left: 26px;
  }

  .step-num {
    width: 52px;
    height: 52px;
    font-size: 18px;
  }

  .step-item {
    gap: 16px;
  }

  .step-content {
    padding: 18px;
  }

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

  .section-head h2 {
    font-size: 26px;
  }

  .section-head p {
    font-size: 14px;
  }

  .cta-inner h2 {
    font-size: 26px;
  }

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

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

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .brand-logo {
    font-size: 17px;
  }

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

  .page-hero {
    padding: 44px 0;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .hero-content p {
    font-size: 14px;
  }

  .section {
    padding: 48px 0;
  }

  .feature-card {
    padding: 20px;
  }

  .step-item {
    padding-bottom: 36px;
  }

  .step-num {
    width: 44px;
    height: 44px;
    font-size: 16px;
  }

  .steps-list {
    gap: 0;
  }

  .scenario-card {
    padding: 18px;
    flex-direction: column;
    gap: 12px;
  }

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

  .faq-item .faq-answer {
    padding: 0 18px 16px;
    font-size: 13px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 13px 24px;
    font-size: 14px;
  }
}