/* roulang page: index */
:root {
  --primary: #00E5A0;
  --primary-dark: #00A86B;
  --primary-hover: #00B87A;
  --accent-gold: #FFB800;
  --accent-orange: #FF6A3D;
  --bg-dark: #0C1216;
  --bg-light: #F8F7F4;
  --text-dark: #1F2937;
  --text-secondary: #6B7280;
  --text-on-dark: #F3F4F6;
  --text-secondary-dark: #A1A1AA;
  --card-light: #FFFFFF;
  --card-dark: #151C22;
  --border-light: rgba(0, 0, 0, 0.06);
  --border-dark: rgba(255, 255, 255, 0.08);
  --radius-large: 24px;
  --radius-medium: 16px;
  --radius-small: 8px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, 'Segoe UI', sans-serif;
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button,
input,
select,
textarea {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  border-radius: 12px;
  font-weight: 500;
  padding: 12px 24px;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  font-weight: 600;
}
.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark));
  color: #fff;
  transform: scale(1.02);
  box-shadow: 0 6px 20px rgba(0, 229, 160, 0.35);
}
.btn-outline-gold {
  background: transparent;
  border: 1.5px solid var(--accent-gold);
  color: var(--text-dark);
  font-weight: 500;
}
.btn-outline-gold:hover,
.btn-outline-gold:focus {
  background: rgba(255, 184, 0, 0.1);
  color: var(--text-dark);
  border-color: var(--accent-gold);
  transform: scale(1.02);
}
.btn-lg {
  padding: 15px 36px;
  font-size: 17px;
}

/* header nav */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 1000;
  padding: 0 24px;
}
.header-nav {
  max-width: 1200px;
  margin: 0 auto;
  background: rgba(21, 28, 34, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-medium);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  box-shadow: var(--shadow-lg);
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-on-dark);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-small);
  color: var(--text-secondary-dark);
  font-size: 15px;
  font-weight: 500;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-item i {
  font-size: 13px;
  opacity: 0.7;
}
.nav-item:hover {
  background: rgba(0, 229, 160, 0.08);
  color: var(--primary);
  border-color: rgba(0, 229, 160, 0.15);
}
.nav-item.active {
  background: rgba(0, 229, 160, 0.2);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 600;
}
.nav-cta {
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  margin-left: 10px;
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-dark);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  color: var(--text-on-dark);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* hero */
.hero-section {
  padding: 60px 24px 80px;
}
.hero-wrap {
  background: linear-gradient(135deg, #0f1a20 0%, #14262e 45%, #0e3b2e 100%);
  border-radius: 32px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-lg);
}
.hero-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
  opacity: 0.22;
}
.hero-wrap::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 60px 50px;
  max-width: 640px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 184, 0, 0.12);
  border: 1px solid rgba(255, 184, 0, 0.3);
  color: var(--accent-gold);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-title {
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 700;
  color: var(--text-on-dark);
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-title span {
  background: linear-gradient(135deg, var(--primary), #7dffd2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-secondary-dark);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-btn-gold {
  background: linear-gradient(135deg, #ffb800, #ffa000);
  color: #1a1a1a;
  font-weight: 600;
}
.hero-btn-gold:hover {
  transform: scale(1.02);
  box-shadow: 0 6px 20px rgba(255, 184, 0, 0.35);
  color: #1a1a1a;
}
.hero-badges {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.data-badge {
  background: rgba(12, 18, 22, 0.55);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-dark);
  border-radius: 50px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 130px;
}
.data-badge .badge-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 229, 160, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  flex-shrink: 0;
}
.data-badge .badge-text {
  display: flex;
  flex-direction: column;
}
.data-badge .badge-num {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1.1;
  font-family: 'SF Pro Display', 'Segoe UI', sans-serif;
}
.data-badge .badge-label {
  font-size: 12px;
  color: var(--text-secondary-dark);
  line-height: 1.2;
  margin-top: 2px;
}
.hero-scroll-strip {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--border-dark);
  padding: 14px 40px;
  display: flex;
  align-items: center;
  gap: 28px;
  overflow: hidden;
  white-space: nowrap;
  background: rgba(0, 0, 0, 0.2);
}
.hero-scroll-strip span {
  color: var(--text-secondary-dark);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-scroll-strip span i {
  color: var(--primary);
  font-size: 10px;
}

/* stats bar */
.stats-section {
  padding: 60px 0;
  background: var(--bg-light);
  position: relative;
}
.stats-bg {
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-md);
  padding: 40px 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.stat-item {
  text-align: center;
  padding: 20px 15px;
  border-radius: var(--radius-medium);
  transition: var(--transition);
  border: 1px solid transparent;
}
.stat-item:hover {
  background: rgba(0, 229, 160, 0.04);
  border-color: rgba(0, 229, 160, 0.15);
  transform: translateY(-2px);
}
.stat-icon {
  font-size: 24px;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.stat-num {
  font-size: 38px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.2;
  font-family: 'SF Pro Display', 'Segoe UI', sans-serif;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* section common */
.section-padding {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}
.section-header .section-tag {
  display: inline-block;
  background: rgba(0, 168, 107, 0.1);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* process timeline */
.timeline-section {
  background: var(--bg-light);
}
.process-card {
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-md);
  padding: 50px;
  position: relative;
  overflow: hidden;
}
.process-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.timeline-wrap {
  position: relative;
  padding-left: 48px;
  max-width: 860px;
  margin: 0 auto;
}
.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary) 70%, transparent 100%);
}
.timeline-item {
  position: relative;
  padding-bottom: 44px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -44px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-light);
  box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.25);
}
.timeline-item .tl-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-gold), #ffa100);
  color: #1a1a1a;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.timeline-item h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.timeline-item p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 620px;
}

/* capability & team */
.capability-section {
  background: var(--bg-light);
  position: relative;
}
.capability-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.capability-left .cap-title {
  font-size: clamp(28px, 3vw, 34px);
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-dark);
}
.capability-left .cap-desc {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 30px;
}
.capability-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.capability-card {
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-medium);
  padding: 24px 20px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.capability-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 229, 160, 0.2);
}
.capability-card .cap-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 229, 160, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.capability-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.capability-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.team-right {
  background: var(--card-dark);
  border-radius: var(--radius-large);
  padding: 40px;
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-lg);
}
.team-right .team-title {
  color: var(--text-on-dark);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}
.team-right .team-sub {
  color: var(--text-secondary-dark);
  font-size: 14px;
  margin-bottom: 30px;
}
.expert-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.expert-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-medium);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  transition: var(--transition);
}
.expert-card:hover {
  background: rgba(0, 229, 160, 0.06);
  border-color: rgba(0, 229, 160, 0.15);
  transform: translateY(-2px);
}
.expert-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
  font-weight: 600;
}
.expert-info .expert-name {
  color: var(--text-on-dark);
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.expert-info .expert-role {
  color: var(--primary);
  font-size: 13px;
  margin-top: 2px;
}
.expert-info .expert-bio {
  color: var(--text-secondary-dark);
  font-size: 13px;
  line-height: 1.5;
  margin-top: 6px;
}

/* plan compare */
.plan-section {
  background: var(--bg-light);
}
.compare-wrap {
  max-width: 960px;
  margin: 0 auto;
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th,
.compare-table td {
  padding: 20px 28px;
  text-align: center;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  font-size: 15px;
}
.compare-table th {
  font-weight: 700;
  font-size: 18px;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  position: relative;
  padding: 32px 28px;
}
.compare-table th .plan-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.compare-table th .plan-tag.standard {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary-dark);
}
.compare-table th .plan-tag.flag {
  background: linear-gradient(135deg, var(--accent-gold), #ffa100);
  color: #1a1a1a;
}
.compare-table th .plan-name {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-on-dark);
}
.compare-table th.flag-col {
  background: linear-gradient(160deg, #0f2a22, #0c1a1e);
  border-left: 2px solid var(--primary);
  position: relative;
}
.compare-table th.flag-col::before {
  content: "推荐";
  position: absolute;
  top: 12px;
  right: 20px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
}
.compare-table td:first-child {
  color: var(--text-secondary);
  font-weight: 500;
  text-align: left;
}
.compare-table td:last-child {
  border-left: 2px solid rgba(0, 229, 160, 0.2);
}
.compare-table .check {
  color: var(--primary-dark);
  font-size: 17px;
}
.compare-table .remove {
  color: #c0c4cc;
  font-size: 17px;
}
.compare-table .price-text {
  color: var(--text-dark);
  font-weight: 600;
}
.compare-table tr:last-child td {
  border-bottom: none;
}
.compare-table .cta-cell {
  padding: 24px 28px;
  background: rgba(0, 229, 160, 0.03);
}
.compare-table .cta-cell .btn {
  padding: 10px 24px;
  font-size: 14px;
}

/* cta contact */
.cta-section {
  padding: 100px 0;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-3.webp") center center / cover no-repeat;
  opacity: 0.08;
}
.cta-wrap {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  background: rgba(21, 28, 34, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-dark);
  border-radius: 32px;
  padding: 56px;
  box-shadow: var(--shadow-lg);
}
.cta-left h2 {
  color: var(--text-on-dark);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-left > p {
  color: var(--text-secondary-dark);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.cta-form label {
  color: var(--text-on-dark);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  display: block;
}
.cta-form .form-control {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  height: 52px;
  color: var(--text-on-dark);
  font-size: 15px;
  padding: 0 18px;
  transition: var(--transition);
  width: 100%;
  margin-bottom: 18px;
}
.cta-form .form-control:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.15);
  color: var(--text-on-dark);
  outline: none;
}
.cta-form textarea.form-control {
  height: auto;
  min-height: 100px;
  padding: 14px 18px;
  resize: vertical;
}
.cta-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.3);
}
.cta-form .btn-submit {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  height: 52px;
  border-radius: 12px;
  transition: var(--transition);
  margin-top: 4px;
}
.cta-form .btn-submit:hover {
  transform: scale(1.01);
  box-shadow: 0 6px 24px rgba(0, 229, 160, 0.35);
}
.cta-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
}
.cta-info-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-medium);
  padding: 22px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}
.cta-info-card:hover {
  background: rgba(0, 229, 160, 0.06);
  border-color: rgba(0, 229, 160, 0.2);
}
.cta-info-card .info-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 229, 160, 0.12);
  color: var(--primary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cta-info-card .info-text h5 {
  color: var(--text-on-dark);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}
.cta-info-card .info-text p {
  color: var(--text-secondary-dark);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

/* news */
.news-section {
  background: var(--bg-light);
  padding-bottom: 90px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-medium);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 229, 160, 0.25);
}
.news-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  background: #e8ece9;
}
.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.news-card:hover .news-cover img {
  transform: scale(1.04);
}
.news-cover .news-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(12, 18, 22, 0.75);
  color: var(--text-on-dark);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  backdrop-filter: blur(4px);
}
.news-body {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.news-date {
  font-size: 12px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.news-date i {
  font-size: 11px;
}
.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.news-link {
  margin-top: auto;
  font-size: 13px;
  color: var(--primary-dark);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-link i {
  font-size: 12px;
  transition: transform 0.3s ease;
}
.news-card:hover .news-link i {
  transform: translateX(4px);
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 30px;
  background: var(--card-light);
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-medium);
  color: var(--text-secondary);
  font-size: 15px;
}

/* faq */
.faq-section {
  background: var(--bg-light);
  padding-bottom: 100px;
}
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.accordion.custom-accordion {
  border-radius: var(--radius-medium);
  overflow: hidden;
  background: var(--card-light);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.accordion.custom-accordion .accordion-item {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-light);
}
.accordion.custom-accordion .accordion-item:last-child {
  border-bottom: none;
}
.accordion.custom-accordion .accordion-button {
  background: var(--card-light);
  color: var(--text-dark);
  font-size: 16px;
  font-weight: 500;
  padding: 22px 26px;
  box-shadow: none;
  border-radius: 0 !important;
  gap: 12px;
}
.accordion.custom-accordion .accordion-button::after {
  color: var(--primary-dark);
  font-size: 14px;
  width: 1.2rem;
  height: 1.2rem;
  background-size: 1.2rem;
  transition: var(--transition);
}
.accordion.custom-accordion .accordion-button:not(.collapsed) {
  color: var(--primary-dark);
  font-weight: 600;
}
.accordion.custom-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  filter: invert(0.4) sepia(1) saturate(3) hue-rotate(120deg);
}
.accordion.custom-accordion .accordion-button:focus {
  box-shadow: none;
}
.accordion.custom-accordion .accordion-body {
  padding: 0 26px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  background: var(--card-light);
}

/* footer */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-secondary-dark);
  padding-top: 80px;
  border-top: 1px solid var(--border-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: 16px;
}
.footer-brand .footer-logo .logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: #fff;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.footer-col h4 {
  color: var(--text-on-dark);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
}
.footer-col a {
  display: block;
  color: var(--text-secondary-dark);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.footer-col .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
}
.footer-col .contact-item i {
  color: var(--primary);
  margin-top: 4px;
  width: 16px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary-dark);
}
.footer-bottom .footer-domain {
  color: rgba(255, 255, 255, 0.4);
}

/* responsive */
@media (max-width: 991px) {
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: rgba(21, 28, 34, 0.97);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-medium);
    padding: 16px;
    flex-direction: column;
    gap: 8px;
    display: none;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
  }
  .nav-menu.show {
    display: flex;
  }
  .nav-item {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 16px;
    color: var(--text-on-dark);
  }
  .nav-item.active {
    color: var(--primary);
  }
  .nav-cta {
    width: 100%;
    margin-left: 0;
    margin-top: 8px;
    justify-content: center;
  }
  .header-nav {
    position: relative;
    padding: 8px 14px;
  }
  .hero-content {
    padding: 40px 30px 36px;
  }
  .stats-bg {
    grid-template-columns: repeat(2, 1fr);
    padding: 30px;
  }
  .capability-wrap {
    grid-template-columns: 1fr;
  }
  .compare-table th,
  .compare-table td {
    padding: 16px 18px;
  }
  .cta-wrap {
    grid-template-columns: 1fr;
    padding: 36px;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 767px) {
  .site-header {
    top: 8px;
    padding: 0 12px;
  }
  .hero-section {
    padding: 24px 12px 50px;
  }
  .hero-content {
    padding: 32px 22px 30px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-badges {
    flex-direction: column;
  }
  .data-badge {
    width: 100%;
  }
  .hero-scroll-strip {
    padding: 12px 20px;
    gap: 16px;
  }
  .section-padding {
    padding: 50px 0;
  }
  .stats-section {
    padding: 40px 0;
  }
  .stats-bg {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius-medium);
  }
  .stat-num {
    font-size: 28px;
  }
  .process-card {
    padding: 32px 24px;
  }
  .timeline-wrap {
    padding-left: 32px;
  }
  .timeline-item::before {
    left: -30px;
  }
  .timeline-item h3 {
    font-size: 18px;
  }
  .capability-left .cap-title {
    font-size: 26px;
  }
  .capability-list {
    grid-template-columns: 1fr;
  }
  .team-right {
    padding: 28px 24px;
  }
  .expert-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
  .expert-info .expert-name {
    justify-content: center;
  }
  .plan-section {
    overflow: hidden;
  }
  .compare-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .compare-table {
    min-width: 640px;
  }
  .cta-section {
    padding: 60px 0;
  }
  .cta-wrap {
    padding: 28px 22px;
    border-radius: 20px;
  }
  .cta-left h2 {
    font-size: 26px;
  }
  .cta-right {
    margin-top: 10px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 30px;
  }
  .footer-brand,
  .footer-col {
    text-align: left;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-logo {
    font-size: 17px;
  }
  .brand-logo .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .stats-bg {
    grid-template-columns: 1fr;
  }
  .hero-btns {
    flex-direction: column;
    width: 100%;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .data-badge {
    padding: 12px 16px;
  }
  .cta-form .form-control {
    height: 48px;
  }
  .compare-table th,
  .compare-table td {
    padding: 14px 14px;
    font-size: 14px;
  }
  .highlight-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* roulang page: category1 */
:root {
            --primary: #00E5A0;
            --primary-dark: #00A86B;
            --primary-hover: #00B87A;
            --accent: #FFB800;
            --warning: #FF6A3D;
            --bg-dark: #0C1216;
            --bg-light: #F8F7F4;
            --text-main: #1F2937;
            --text-sub: #6B7280;
            --text-dark-main: #F3F4F6;
            --text-dark-sub: #A1A1AA;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --radius-large: 24px;
            --radius-medium: 16px;
            --radius-small: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-num: "Inter", "SF Pro Display", "Segoe UI", "Roboto", sans-serif;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

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

        .section {
            padding: 100px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.5vw, 36px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-dark);
            padding: 0;
            border-bottom: 1px solid var(--border-dark);
        }

        .header-nav {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(0, 229, 160, 0.35);
        }

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

        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 12px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-item i {
            font-size: 13px;
            opacity: 0.7;
        }

        .nav-item:hover {
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary);
        }

        .nav-item.active {
            background: rgba(0, 229, 160, 0.18);
            color: var(--primary);
            box-shadow: inset 0 0 0 2px rgba(0, 229, 160, 0.3);
        }

        .nav-cta {
            margin-left: 12px;
            padding: 10px 22px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .nav-cta:hover {
            background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark));
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 229, 160, 0.3);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            color: #fff;
            font-size: 20px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: var(--bg-dark);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-dark);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.2), transparent 65%);
            border-radius: 50%;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 184, 0, 0.1), transparent 70%);
            border-radius: 50%;
        }

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

        .breadcrumb-line {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dark-sub);
            margin-bottom: 32px;
        }

        .breadcrumb-line a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s;
        }

        .breadcrumb-line a:hover {
            color: var(--primary);
        }

        .breadcrumb-line i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.3);
        }

        .breadcrumb-line span {
            color: var(--primary);
        }

        .page-hero h1 {
            font-size: clamp(32px, 4vw, 52px);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .page-hero h1 .accent-text {
            color: var(--primary);
        }

        .page-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-dark);
            border-radius: 50px;
            padding: 8px 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
        }

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

        /* ===== Main Content ===== */
        .content-wrapper {
            background: var(--bg-light);
            padding: 80px 0;
        }

        /* ===== Split Layout ===== */
        .split-section {
            padding: 100px 0;
        }

        .split-section + .split-section {
            padding-top: 0;
        }

        .split-image-wrap {
            position: relative;
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            min-height: 380px;
        }

        .split-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .split-image-wrap::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(12, 18, 22, 0.5), transparent);
        }

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

        .split-content h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
            color: var(--text-main);
        }

        .split-content p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .split-points {
            list-style: none;
            margin-top: 24px;
            padding: 0;
        }

        .split-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            font-size: 14px;
            color: var(--text-main);
        }

        .split-points li:last-child {
            border-bottom: none;
        }

        .split-points li i {
            color: var(--primary-dark);
            font-size: 15px;
            margin-top: 3px;
            flex-shrink: 0;
            background: rgba(0, 229, 160, 0.12);
            border-radius: 50%;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Process Timeline ===== */
        .process-section {
            background: var(--bg-dark);
            padding: 100px 0;
        }

        .process-section .section-title {
            color: #fff;
        }

        .process-section .section-subtitle {
            color: var(--text-dark-sub);
        }

        .timeline-wrap {
            position: relative;
            margin-top: 60px;
            padding-left: 0;
        }

        .timeline-wrap::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), transparent);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            width: 100%;
            margin-bottom: 48px;
            position: relative;
        }

        .timeline-item:nth-child(odd) {
            flex-direction: row-reverse;
        }

        .timeline-item:nth-child(odd) .timeline-card {
            margin-right: calc(50% + 40px);
            margin-left: 0;
        }

        .timeline-item:nth-child(even) .timeline-card {
            margin-left: calc(50% + 40px);
            margin-right: 0;
        }

        .timeline-node {
            position: absolute;
            left: 50%;
            top: 28px;
            transform: translateX(-50%);
            z-index: 2;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            font-family: var(--font-num);
            box-shadow: 0 0 0 6px rgba(0, 229, 160, 0.15), 0 4px 16px rgba(0, 229, 160, 0.3);
        }

        .timeline-card {
            width: calc(50% - 60px);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-medium);
            padding: 28px;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .timeline-card:hover {
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-2px);
            box-shadow: var(--shadow-dark);
        }

        .timeline-card .step-tag {
            display: inline-block;
            background: rgba(255, 184, 0, 0.15);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        .timeline-card h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .timeline-card p {
            color: var(--text-dark-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Capability ===== */
        .capability-section {
            background: var(--bg-light);
            padding: 100px 0;
        }

        .capability-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            margin-top: 48px;
        }

        .capability-card {
            background: #fff;
            border-radius: var(--radius-large);
            padding: 36px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .capability-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            opacity: 0.6;
            transition: opacity 0.3s;
        }

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

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

        .capability-card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 229, 160, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .capability-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .capability-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .capability-card.featured {
            background: linear-gradient(135deg, var(--bg-dark), #1a242b);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .capability-card.featured h3 {
            color: #fff;
        }

        .capability-card.featured p {
            color: var(--text-dark-sub);
        }

        .capability-card.featured .icon-wrap {
            background: rgba(255, 184, 0, 0.15);
            color: var(--accent);
        }

        /* ===== Compare ===== */
        .compare-section {
            background: var(--bg-light);
            padding: 100px 0;
        }

        .compare-table-wrap {
            margin-top: 48px;
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            max-width: 900px;
            margin: 0 auto;
            border-collapse: collapse;
            background: #fff;
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .compare-table th,
        .compare-table td {
            padding: 20px 24px;
            text-align: left;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            font-size: 14px;
            vertical-align: middle;
        }

        .compare-table th {
            font-weight: 600;
            font-size: 15px;
            background: var(--bg-light);
            color: var(--text-main);
        }

        .compare-table th.featured-col {
            background: rgba(0, 229, 160, 0.08);
            position: relative;
        }

        .compare-table th.featured-col::before {
            content: "推荐";
            position: absolute;
            top: -12px;
            left: 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
        }

        .compare-table td.featured-col {
            background: rgba(0, 229, 160, 0.02);
            border-left: 2px solid var(--primary);
            border-right: 2px solid var(--primary);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .check-icon {
            color: var(--primary-dark);
            font-size: 15px;
        }

        .compare-table .minus-icon {
            color: #ccc;
            font-size: 15px;
        }

        .compare-table .btn-compare {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .btn-standard {
            background: #f0f0f0;
            color: var(--text-main);
        }

        .btn-standard:hover {
            background: #e5e5e5;
        }

        .btn-premium {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 229, 160, 0.25);
        }

        .btn-premium:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 229, 160, 0.35);
            color: #fff;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
            padding: 100px 0;
        }

        .faq-wrap {
            max-width: 820px;
            margin: 48px auto 0;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-medium);
            border: 1px solid var(--border-light);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
        }

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

        .faq-item.active {
            border-color: rgba(0, 229, 160, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.3s;
            user-select: none;
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-sub);
            transition: transform 0.3s;
        }

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

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

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

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

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.15), transparent 70%);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-section h2 {
            color: #fff;
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            margin-bottom: 20px;
        }

        .cta-section p {
            color: var(--text-dark-sub);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

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

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 20px rgba(0, 229, 160, 0.3);
        }

        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 229, 160, 0.4);
            color: #fff;
        }

        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            padding: 12px 36px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s;
        }

        .btn-cta-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 229, 160, 0.05);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0f13;
            color: rgba(255, 255, 255, 0.7);
            padding: 80px 0 0;
            border-top: 1px solid var(--border-dark);
        }

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

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 0;
        }

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

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .contact-item i {
            color: var(--primary);
            font-size: 13px;
            width: 18px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-domain {
            color: rgba(255, 255, 255, 0.3);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .section {
                padding: 70px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 56px 0;
            }
            .header-nav {
                padding: 10px 16px;
            }
            .nav-toggle {
                display: flex;
                margin-left: auto;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 62px;
                left: 16px;
                right: 16px;
                background: var(--bg-dark);
                border-radius: var(--radius-medium);
                padding: 20px;
                flex-direction: column;
                gap: 12px;
                box-shadow: var(--shadow-dark);
                border: 1px solid var(--border-dark);
                align-items: stretch;
                z-index: 999;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu .nav-item {
                justify-content: flex-start;
                padding: 14px 16px;
                border-radius: 12px;
            }
            .nav-menu .nav-cta {
                margin-left: 0;
                justify-content: center;
                text-align: center;
                width: 100%;
                padding: 14px;
            }
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .timeline-wrap::before {
                left: 18px;
            }
            .timeline-node {
                left: 18px;
                width: 36px;
                height: 36px;
                font-size: 12px;
            }
            .timeline-item,
            .timeline-item:nth-child(odd) {
                flex-direction: column;
                padding-left: 56px;
            }
            .timeline-item:nth-child(odd) .timeline-card,
            .timeline-item:nth-child(even) .timeline-card {
                margin: 0;
                width: 100%;
            }
            .timeline-card {
                padding: 20px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                width: 100%;
                text-align: center;
            }
            .split-image-wrap {
                min-height: 240px;
            }
        }

        @media (max-width: 575px) {
            .hero-badges {
                flex-direction: column;
            }
            .hero-badge {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Bootstrap Override ===== */
        .btn:focus,
        .btn:active:focus {
            box-shadow: none;
        }

        .btn {
            border-radius: 12px;
            font-family: var(--font-main);
        }

        .card {
            border-radius: var(--radius-medium);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .navbar {
            background: var(--bg-dark);
        }

        .navbar a,
        .navbar-brand {
            color: #fff;
        }

/* roulang page: article */
:root {
  --primary: #00E5A0;
  --primary-dark: #00A86B;
  --primary-hover: #00B87A;
  --accent-gold: #FFB800;
  --accent-red: #FF6A3D;
  --bg-dark: #0C1216;
  --bg-light: #F8F7F4;
  --text-main: #1F2937;
  --text-sub: #6B7280;
  --text-dark-main: #F3F4F6;
  --text-dark-sub: #A1A1AA;
  --border-light: rgba(0,0,0,0.06);
  --border-dark: rgba(255,255,255,0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-1: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-2: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-3: 0 16px 40px rgba(0,0,0,0.10);
  --transition: all 0.3s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

.btn { border-radius: 12px; padding: 12px 28px; font-weight: 600; font-size: 15px; letter-spacing: 0.02em; transition: var(--transition); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 229, 160, 0.25);
}
.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-dark) 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 229, 160, 0.35);
}
.btn-outline-gold {
  background: transparent;
  border: 1.5px solid var(--accent-gold);
  color: var(--text-main);
}
.btn-outline-gold:hover {
  background: rgba(255, 184, 0, 0.1);
  border-color: var(--accent-gold);
  color: var(--text-main);
  transform: translateY(-2px);
}
.btn-gold {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #F59E0B 100%);
  border: none;
  color: #1F2937;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(255, 184, 0, 0.3);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 184, 0, 0.4); color: #1F2937; }
.btn:disabled { opacity: 0.5; transform: none; }

/* Header Nav */
.site-header {
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-dark);
}
.header-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  transition: var(--transition);
}
.brand-logo:hover { color: var(--primary); }
.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  color: var(--text-dark-sub);
  font-size: 14px;
  font-weight: 500;
  border: 2px solid transparent;
  transition: var(--transition);
}
.nav-item i { font-size: 15px; }
.nav-item:hover { background: rgba(0, 229, 160, 0.1); color: #fff; }
.nav-item.active { background: rgba(0, 229, 160, 0.2); color: var(--primary); border-color: var(--primary); }
.nav-cta { margin-left: 8px; padding: 10px 24px; }
.nav-toggle {
  display: none;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  color: #fff;
  width: 44px;
  height: 44px;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(0, 229, 160, 0.2); }

/* Breadcrumb */
.breadcrumb-section {
  background: #fff;
  border-bottom: 1px solid #ECECEC;
  padding: 18px 0;
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
}
.breadcrumb-nav a { color: var(--text-sub); }
.breadcrumb-nav a:hover { color: var(--primary-dark); }
.breadcrumb-nav .sep { font-size: 12px; color: #C0C0C0; }
.breadcrumb-nav .current { color: var(--text-main); font-weight: 500; }

/* Article Main */
.article-main { background: #fff; padding: 56px 0 64px; }
.article-wrap { max-width: 860px; margin: 0 auto; }
.article-head { text-align: center; margin-bottom: 34px; }
.article-category {
  display: inline-block;
  background: rgba(0, 229, 160, 0.12);
  color: var(--primary-dark);
  border-radius: 30px;
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.article-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  color: var(--text-sub);
  font-size: 14px;
}
.meta-item { display: flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--primary-dark); font-size: 14px; }
.meta-divider { width: 4px; height: 4px; border-radius: 50%; background: #D0D0D0; }

.article-cover {
  border-radius: 24px;
  overflow: hidden;
  margin-bottom: 44px;
  box-shadow: var(--shadow-2);
}
.article-cover img { width: 100%; aspect-ratio: 16/8; object-fit: cover; }

/* Article Body */
.article-body {
  max-width: 760px;
  margin: 0 auto 48px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-main);
}
.article-body h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 44px 0 18px;
  color: var(--text-main);
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 0;
}
.article-body h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 14px;
  color: var(--text-main);
}
.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text-main);
}
.article-body p { margin-bottom: 22px; }
.article-body a { color: var(--primary-dark); border-bottom: 1px solid rgba(0, 168, 107, 0.25); }
.article-body a:hover { color: var(--primary); border-bottom-color: var(--primary); }
.article-body ul, .article-body ol { margin: 0 0 24px 4px; padding-left: 24px; }
.article-body li { margin-bottom: 10px; }
.article-body blockquote {
  margin: 32px 0;
  padding: 22px 28px;
  background: linear-gradient(135deg, rgba(0, 229, 160, 0.06), rgba(0, 168, 107, 0.04));
  border-left: 4px solid var(--primary);
  border-radius: 0 16px 16px 0;
  color: var(--text-sub);
  font-style: normal;
}
.article-body blockquote p { margin-bottom: 8px; }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body img { border-radius: 16px; margin: 28px auto; }
.article-body figure { margin: 32px 0; }
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 12px;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 28px 0; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-1); }
.article-body table th { background: rgba(0, 229, 160, 0.1); color: var(--text-main); font-weight: 600; padding: 14px 18px; border: 1px solid #E8EAE8; text-align: left; }
.article-body table td { padding: 12px 18px; border: 1px solid #E8EAE8; color: var(--text-sub); }
.article-body table tr:hover td { background: rgba(0, 229, 160, 0.03); }
.article-body pre {
  background: var(--bg-dark);
  color: var(--text-dark-main);
  border-radius: 16px;
  padding: 22px 24px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}
.article-body code { font-family: "SFMono-Regular", Consolas, monospace; background: rgba(0,0,0,0.06); padding: 2px 6px; border-radius: 5px; font-size: 14px; }
.article-body pre code { background: transparent; padding: 0; color: inherit; }
.article-body hr { border: none; border-top: 1px solid #E8EAE8; margin: 40px 0; }
.article-body .highlight { background: rgba(255, 184, 0, 0.12); padding: 0 4px; border-radius: 4px; }

/* Tags */
.article-tags {
  max-width: 760px;
  margin: 0 auto 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.article-tags .tag-label { font-size: 14px; color: var(--text-sub); display: flex; align-items: center; gap: 6px; }
.tag-chip {
  display: inline-block;
  background: var(--bg-light);
  border: 1px solid #E5E7EB;
  border-radius: 30px;
  padding: 5px 16px;
  font-size: 13px;
  color: var(--text-sub);
  transition: var(--transition);
}
.tag-chip:hover { border-color: var(--primary); color: var(--primary-dark); background: rgba(0, 229, 160, 0.05); }

/* Post Nav */
.post-nav-section { background: var(--bg-light); padding: 44px 0; }
.post-nav-wrap { max-width: 860px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.post-nav-card {
  background: #fff;
  border-radius: 16px;
  padding: 24px 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-1);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.post-nav-card:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); border-color: rgba(0, 229, 160, 0.3); }
.post-nav-label { font-size: 13px; color: var(--text-sub); display: flex; align-items: center; gap: 8px; }
.post-nav-label i { color: var(--primary-dark); }
.post-nav-title { font-size: 17px; font-weight: 600; color: var(--text-main); line-height: 1.5; }
.post-nav-card:hover .post-nav-title { color: var(--primary-dark); }
.post-nav-card.next { text-align: right; }
.post-nav-card.next .post-nav-label { justify-content: flex-end; }

/* Related */
.related-section { background: #fff; padding: 72px 0 80px; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .section-tag {
  display: inline-block;
  background: rgba(0, 229, 160, 0.1);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 30px;
  padding: 5px 18px;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 700; color: var(--text-main); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-3); border-color: rgba(0, 229, 160, 0.4); }
.related-card .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: var(--transition); }
.related-card:hover .card-img { transform: scale(1.03); }
.related-card-body { padding: 26px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.related-card-body h3 { font-size: 18px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; color: var(--text-main); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body h3 a:hover { color: var(--primary-dark); }
.related-card-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 18px; }
.related-card-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.related-card-footer .card-link { font-size: 14px; font-weight: 600; color: var(--primary-dark); display: flex; align-items: center; gap: 6px; }
.related-card-footer .card-link:hover { color: var(--primary); }
.related-card-footer .card-date { font-size: 13px; color: #9CA3AF; }

/* CTA */
.cta-section { background: var(--bg-dark); padding: 80px 0; position: relative; overflow: hidden; }
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: 0.18;
}
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12,18,22,0.92) 0%, rgba(12,18,22,0.72) 100%);
}
.cta-wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.cta-info h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; color: #fff; margin-bottom: 16px; line-height: 1.3; }
.cta-info p { font-size: 16px; color: var(--text-dark-sub); line-height: 1.8; margin-bottom: 24px; max-width: 520px; }
.cta-contacts { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.cta-contacts span { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,0.8); font-size: 15px; }
.cta-contacts i { color: var(--primary); font-size: 18px; width: 20px; text-align: center; }
.cta-action { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.cta-action .btn { min-width: 180px; text-align: center; justify-content: center; }
.cta-note { font-size: 13px; color: rgba(255,255,255,0.4); display: flex; align-items: center; gap: 8px; }
.cta-note i { color: var(--accent-gold); }

/* Not Found */
.not-found {
  text-align: center;
  padding: 60px 24px;
  background: var(--bg-light);
  border-radius: 24px;
  border: 1px solid var(--border-light);
}
.not-found-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(0, 229, 160, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}
.not-found-icon i { font-size: 32px; color: var(--primary-dark); }
.not-found h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
.not-found p { color: var(--text-sub); font-size: 15px; margin-bottom: 28px; }

/* Footer */
.site-footer { background: var(--bg-dark); padding: 72px 0 0; border-top: 1px solid var(--border-dark); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.1fr; gap: 44px; padding-bottom: 52px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: var(--text-dark-sub); margin-bottom: 10px; }
.footer-col h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-col a { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-dark-sub); padding: 6px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--primary); transform: translateX(4px); }
.contact-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-dark-sub); padding: 7px 0; }
.contact-item i { color: var(--primary); width: 18px; text-align: center; }
.footer-col .service-text { font-size: 14px; line-height: 2; color: var(--text-dark-sub); }
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}
.footer-domain { opacity: 0.6; }

/* Card/Form overrides */
.card { border-radius: var(--radius-lg); border: 1px solid var(--border-light); box-shadow: var(--shadow-1); }
.form-control { border-radius: 12px; border: 1px solid #D1D5DB; padding: 12px 16px; font-size: 15px; height: 52px; transition: var(--transition); }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.12); outline: none; }

/* Responsive */
@media (max-width: 991px) {
  .nav-menu {
    position: absolute;
    top: 74px;
    left: 16px;
    right: 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    display: none;
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  }
  .nav-menu.open { display: flex; }
  .nav-item { justify-content: flex-start; padding: 12px 16px; }
  .nav-item.active { border-width: 2px; }
  .nav-cta { margin: 12px 0 0; text-align: center; }
  .nav-toggle { display: flex; }
  .cta-wrap { grid-template-columns: 1fr; gap: 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 767px) {
  body { font-size: 15px; }
  .breadcrumb-section { padding: 14px 0; }
  .article-main { padding: 40px 0 48px; }
  .article-head { margin-bottom: 26px; }
  .article-title { font-size: 26px; line-height: 1.4; }
  .article-meta { gap: 6px 16px; font-size: 13px; }
  .article-cover { border-radius: 16px; margin-bottom: 32px; }
  .article-body { font-size: 16px; line-height: 1.85; }
  .article-body h2 { font-size: 24px; margin-top: 36px; }
  .article-body h3 { font-size: 20px; }
  .article-body table { display: block; overflow-x: auto; }
  .post-nav-wrap { grid-template-columns: 1fr; gap: 16px; }
  .post-nav-card.next { text-align: left; }
  .post-nav-card.next .post-nav-label { justify-content: flex-start; }
  .related-grid { grid-template-columns: 1fr; gap: 20px; }
  .section-head { margin-bottom: 32px; }
  .cta-section { padding: 56px 0; }
  .cta-action { align-items: stretch; }
  .cta-action .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { padding: 20px 0; }
}

@media (max-width: 520px) {
  .header-nav { padding: 12px 16px; }
  .brand-logo { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }
  .container { padding-left: 18px; padding-right: 18px; }
  .article-meta .meta-divider { display: none; }
  .article-body table { font-size: 14px; }
  .related-card-body { padding: 20px; }
}

/* roulang page: category2 */
:root {
  --primary: #00E5A0;
  --primary-dark: #00A86B;
  --primary-hover: #00B87A;
  --accent: #FFB800;
  --danger: #FF6A3D;
  --dark-bg: #0C1216;
  --light-bg: #F8F7F4;
  --text-dark: #1F2937;
  --text-muted: #6B7280;
  --text-light: #F3F4F6;
  --text-secondary-dark: #A1A1AA;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
  --shadow-md: 0 12px 24px rgba(0,0,0,0.06);
  --border-light: rgba(0,0,0,0.06);
  --border-dark: rgba(255,255,255,0.08);
  --transition-base: 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--light-bg);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; }
input, textarea, select { font-family: inherit; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; margin: 0 auto; width: 100%; }
.section { padding: 90px 0; position: relative; }
.section-heading { text-align: center; margin-bottom: 56px; }
.section-heading .label { display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary-dark); background: rgba(0, 232, 160, 0.08); padding: 6px 18px; border-radius: 100px; letter-spacing: 2px; margin-bottom: 14px; text-transform: uppercase; }
.section-heading h2 { font-size: clamp(28px, 3.2vw, 36px); font-weight: 700; color: var(--text-dark); line-height: 1.3; margin-bottom: 16px; }
.section-heading p { font-size: 16px; color: var(--text-muted); max-width: 720px; margin: 0 auto; line-height: 1.8; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12, 18, 22, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-logo .logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0C1216;
  font-size: 18px;
  box-shadow: 0 4px 16px rgba(0, 229, 160, 0.3);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 12px;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.nav-item i { font-size: 15px; color: rgba(255,255,255,0.4); transition: color 0.3s ease; }
.nav-item:hover { background: rgba(0, 229, 160, 0.08); color: var(--primary); }
.nav-item:hover i { color: var(--primary); }
.nav-item.active {
  background: rgba(0, 229, 160, 0.15);
  color: var(--primary);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 160, 0.3);
}
.nav-item.active i { color: var(--primary); }
.nav-cta {
  margin-left: 8px;
  padding: 10px 22px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  white-space: nowrap;
  border: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 229, 160, 0.25);
}
.nav-cta:hover { background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark)); box-shadow: 0 6px 24px rgba(0, 229, 160, 0.35); transform: translateY(-2px); color: #fff; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; background: rgba(255,255,255,0.08); color: #fff; font-size: 18px; align-items: center; justify-content: center; transition: background 0.3s ease; }
.nav-toggle:hover { background: rgba(0, 229, 160, 0.15); }

.page-hero {
  position: relative;
  padding: 120px 0 110px;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(12,18,22,0.92) 30%, rgba(12,18,22,0.55) 70%, rgba(12,18,22,0.35));
  z-index: 1;
}
.hero-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,160,0.22) 0%, transparent 65%);
  top: -80px;
  right: 10%;
  z-index: 1;
}
.hero-content { position: relative; z-index: 2; }
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 28px;
}
.breadcrumb-nav a { color: rgba(255,255,255,0.5); transition: color 0.3s ease; }
.breadcrumb-nav a:hover { color: var(--primary); }
.breadcrumb-nav .sep { color: rgba(255,255,255,0.25); }
.breadcrumb-nav .current { color: var(--primary); font-weight: 500; }
.page-hero h1 {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 700;
  line-height: 1.25;
  max-width: 680px;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.page-hero h1 .highlight { background: linear-gradient(120deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.page-hero .hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin-bottom: 36px;
}
.hero-metrics {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px;
  padding: 10px 22px;
  backdrop-filter: blur(8px);
}
.metric-pill .num { font-size: clamp(22px, 2.5vw, 32px); font-weight: 700; color: var(--accent); }
.metric-pill .lbl { font-size: 12px; color: rgba(255,255,255,0.65); }

.overview-section { background: var(--light-bg); }
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.overview-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.overview-media img { width: 100%; height: 400px; object-fit: cover; }
.overview-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(12,18,22,0.2), transparent 60%); }
.overview-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  z-index: 2;
  background: rgba(12,18,22,0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  color: #fff;
}
.overview-badge .big { font-size: 28px; font-weight: 700; color: var(--primary); }
.overview-badge .small { font-size: 13px; color: rgba(255,255,255,0.7); }
.overview-content h2 { font-size: clamp(28px, 3vw, 34px); font-weight: 700; margin-bottom: 20px; line-height: 1.35; }
.overview-content > p { font-size: 16px; color: var(--text-muted); line-height: 1.9; margin-bottom: 28px; }
.overview-points { display: flex; flex-direction: column; gap: 18px; }
.point-item { display: flex; gap: 14px; align-items: flex-start; }
.point-icon { width: 42px; height: 42px; border-radius: 12px; background: rgba(0, 232, 160, 0.1); border: 1px solid rgba(0, 232, 160, 0.2); display: flex; align-items: center; justify-content: center; color: var(--primary-dark); font-size: 16px; flex-shrink: 0; }
.point-text h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; color: var(--text-dark); }
.point-text p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

.timeline-section {
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
}
.timeline-section::before { content: ""; position: absolute; width: 600px; height: 600px; background: radial-gradient(circle, rgba(0,229,160,0.1) 0%, transparent 60%); top: -100px; right: -100px; border-radius: 50%; }
.timeline-section .section-heading h2 { color: #fff; }
.timeline-section .section-heading p { color: rgba(255,255,255,0.6); }
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), rgba(0,229,160,0.05));
}
.timeline-item {
  position: relative;
  padding-left: 72px;
  margin-bottom: 44px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 14px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 5px rgba(0, 229, 160, 0.15), 0 0 16px rgba(0, 229, 160, 0.4);
  z-index: 2;
}
.timeline-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 32px 32px 28px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.timeline-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 160, 0.3); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4); }
.timeline-step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.timeline-step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 32px;
  padding: 0 12px;
  background: linear-gradient(135deg, var(--accent), #E5A000);
  color: #1F2937;
  font-size: 13px;
  font-weight: 700;
  border-radius: 8px;
  letter-spacing: 1px;
}
.timeline-card h3 { color: #fff; font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.timeline-card p { color: rgba(255,255,255,0.65); font-size: 15px; line-height: 1.8; }

.capability-section { background: var(--light-bg); }
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.capability-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}
.capability-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-dark)); opacity: 0.4; transition: opacity 0.3s ease; }
.capability-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(0, 229, 160, 0.2); }
.capability-card:hover::before { opacity: 1; }
.capability-card:nth-child(4) { grid-column: span 1; }
.capability-card:last-child { grid-column: span 1; }
.capability-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,229,160,0.12), rgba(0,168,107,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 20px;
}
.capability-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.capability-card p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }

.related-section { background: #fff; border-top: 1px solid var(--border-light); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 28px 26px;
  background: var(--light-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(0, 229, 160, 0.25); background: #fff; }
.related-icon { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; flex-shrink: 0; }
.related-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.related-card p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

.faq-section { background: var(--dark-bg); position: relative; overflow: hidden; }
.faq-section::after { content: ""; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(0,229,160,0.08), transparent 60%); bottom: -120px; left: -100px; }
.faq-section .section-heading h2 { color: #fff; }
.faq-section .section-heading p { color: rgba(255,255,255,0.6); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; position: relative; z-index: 2; }
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item.open { border-color: rgba(0, 229, 160, 0.25); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  color: rgba(255,255,255,0.9);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s ease;
}
.faq-question .faq-icon { width: 28px; height: 28px; border-radius: 8px; background: rgba(0,229,160,0.1); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 12px; transition: all 0.3s ease; flex-shrink: 0; }
.faq-item.open .faq-question { color: var(--primary); }
.faq-item.open .faq-icon { background: var(--primary); color: #0C1216; transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 28px 24px; color: rgba(255,255,255,0.65); font-size: 15px; line-height: 1.8; }

.cta-section {
  background: linear-gradient(135deg, #0C1216, #111B20);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before { content: ""; position: absolute; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(0,229,160,0.15), transparent 65%); top: -150px; right: -80px; }
.cta-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; position: relative; z-index: 2; }
.cta-text h2 { color: #fff; font-size: clamp(26px, 3vw, 34px); font-weight: 700; margin-bottom: 18px; }
.cta-text p { color: rgba(255,255,255,0.7); font-size: 15px; line-height: 1.9; margin-bottom: 30px; }
.cta-feature-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 34px; }
.cta-feature { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,0.8); font-size: 15px; }
.cta-feature i { color: var(--primary); font-size: 16px; }
.form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}
.form-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; color: var(--text-dark); }
.form-card .form-sub { font-size: 14px; color: var(--text-muted); margin-bottom: 28px; }
.form-label { font-size: 13px; font-weight: 500; color: var(--text-dark); margin-bottom: 6px; display: block; }
.form-control {
  width: 100%;
  height: 52px;
  border: 1px solid #E5E7EB;
  border-radius: 12px;
  padding: 0 18px;
  font-size: 15px;
  transition: all 0.3s ease;
  background: #F9FAFB;
}
.form-control:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.1); outline: none; }
textarea.form-control { height: auto; min-height: 100px; padding: 14px 18px; resize: vertical; }
.btn-submit {
  width: 100%;
  height: 52px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-top: 8px;
}
.btn-submit:hover { background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark)); box-shadow: 0 8px 28px rgba(0, 229, 160, 0.3); transform: translateY(-2px); }

.site-footer { background: #0A0F13; padding: 80px 0 0; border-top: 1px solid rgba(255,255,255,0.04); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr 1fr; gap: 48px; padding-bottom: 60px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-brand .footer-logo .logo-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; color: #0C1216; font-size: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); margin-bottom: 12px; }
.footer-col h4 { color: rgba(255,255,255,0.9); font-size: 16px; font-weight: 600; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ""; position: absolute; bottom: 0; left: 0; width: 32px; height: 2px; background: var(--primary); border-radius: 2px; }
.footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 14px; padding: 5px 0; transition: all 0.3s ease; }
.footer-col a:hover { color: var(--primary); padding-left: 6px; }
.contact-item { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,0.5); font-size: 14px; margin-bottom: 12px; }
.contact-item i { color: var(--primary); width: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding: 24px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer-domain { color: rgba(255,255,255,0.25); }

@media (max-width: 992px) {
  .overview-grid { grid-template-columns: 1fr; gap: 40px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--dark-bg);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 20px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
  }
  .nav-menu.open { display: flex; }
  .nav-item { padding: 14px 18px; }
  .nav-cta { margin-left: 0; text-align: center; }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .page-hero { padding: 80px 0 70px; }
  .page-hero h1 { font-size: 30px; }
  .capability-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .timeline-item { padding-left: 56px; }
  .timeline::before { left: 16px; }
  .timeline-dot { left: 8px; }
  .timeline-card { padding: 24px; }
  .form-card { padding: 28px; }
  .cta-grid { gap: 32px; }
  .hero-metrics { flex-direction: column; align-items: stretch; }
  .metric-pill { justify-content: center; }
}

/* roulang page: category3 */
:root{
  --primary:#00E5A0;
  --primary-dark:#00A86B;
  --primary-hover:#00B87A;
  --accent:#FFB800;
  --accent-soft:rgba(255,184,0,.12);
  --danger:#FF6A3D;
  --bg-dark:#0C1216;
  --bg-light:#F8F7F4;
  --text-dark:#1F2937;
  --text-secondary:#6B7280;
  --text-light:#F3F4F6;
  --text-secondary-dark:#A1A1AA;
  --border-light:rgba(0,0,0,.06);
  --border-dark:rgba(255,255,255,.08);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:8px;
  --shadow-1:0 4px 16px rgba(0,0,0,.06),0 1px 3px rgba(0,0,0,.04);
  --shadow-2:0 8px 30px rgba(0,0,0,.08),0 2px 8px rgba(0,0,0,.04);
  --shadow-3:0 16px 50px rgba(0,0,0,.12);
  --gradient:linear-gradient(135deg,#00E5A0 0%,#00A86B 100%);
  --gradient-hover:linear-gradient(135deg,#00E5A0 20%,#00B87A 100%);
  --font-ui:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-ui);background:var(--bg-light);color:var(--text-dark);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .25s}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input,textarea{font-family:inherit}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}
.highlight{color:var(--primary-dark)}
.text-gradient{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

.btn{border-radius:12px;padding:12px 28px;font-weight:600;font-size:15px;border:1.5px solid transparent;transition:all .25s ease;display:inline-flex;align-items:center;gap:8px;line-height:1.4}
.btn-primary{background:var(--gradient);color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(0,168,107,.3)}
.btn-primary:hover{background:var(--gradient-hover);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,168,107,.4)}
.btn-outline-accent{background:transparent;border-color:var(--accent);color:var(--text-light)}
.btn-outline-accent:hover{background:var(--accent-soft);color:var(--accent);transform:translateY(-2px)}
.btn-lg{padding:15px 36px;font-size:16px;border-radius:14px}

.section-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(0,168,107,.08);color:var(--primary-dark);font-size:13px;font-weight:600;padding:6px 16px;border-radius:100px;letter-spacing:.02em;margin-bottom:16px}
.section-tag i{font-size:12px}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-head h2{font-size:clamp(28px,3.4vw,36px);color:var(--text-dark);letter-spacing:-.01em;margin-bottom:14px}
.section-head p{color:var(--text-secondary);font-size:16px}

.site-header{background:var(--bg-dark);border-bottom:1px solid var(--border-dark);position:sticky;top:0;z-index:1000;padding:14px 0}
.header-nav{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:700;letter-spacing:-.02em}
.brand-logo:hover{color:var(--primary)}
.logo-icon{width:38px;height:38px;border-radius:10px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 4px 12px rgba(0,168,107,.35)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu .nav-item{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:10px;color:rgba(255,255,255,.65);font-size:14px;font-weight:500;transition:all .2s ease}
.nav-menu .nav-item i{font-size:14px}
.nav-menu .nav-item:hover{background:rgba(0,229,160,.08);color:#fff}
.nav-menu .nav-item.active{background:rgba(0,229,160,.18);color:var(--primary);box-shadow:inset 0 0 0 1.5px rgba(0,229,160,.45)}
.nav-menu .nav-cta{margin-left:8px;padding:9px 22px;font-size:14px;border-radius:10px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,.06);color:#fff;font-size:18px;align-items:center;justify-content:center;border:1px solid var(--border-dark);transition:all .2s}
.nav-toggle:hover{background:rgba(0,229,160,.15);color:var(--primary)}

.hero{position:relative;background:var(--bg-dark);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.22}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(12,18,22,.95) 30%,rgba(12,18,22,.6) 60%,rgba(0,168,107,.35));z-index:1}
.hero .hero-breadcrumb{position:relative;z-index:2}
.hero .hero-container{position:relative;z-index:2;padding-top:84px;padding-bottom:96px}
.hero-breadcrumb{display:flex;align-items:center;gap:4px;font-size:13px;margin-bottom:24px;color:rgba(255,255,255,.5)}
.hero-breadcrumb a{color:rgba(255,255,255,.7);transition:color .2s}
.hero-breadcrumb a:hover{color:var(--primary)}
.hero-breadcrumb .sep{margin:0 4px;color:rgba(255,255,255,.3)}
.hero-breadcrumb .current{color:var(--primary)}
.hero-content{max-width:880px}
.hero-content h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:20px}
.hero-content h1 .brand-highlight{color:var(--primary)}
.hero-content .lead{font-size:clamp(16px,1.4vw,19px);color:rgba(255,255,255,.75);max-width:640px;line-height:1.8;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:16px;margin-top:48px;flex-wrap:wrap}
.stat-pill{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.06);backdrop-filter:blur(6px);border:1px solid var(--border-dark);border-radius:100px;padding:14px 24px;transition:transform .2s,background .2s}
.stat-pill:hover{transform:translateY(-2px);background:rgba(255,255,255,.1)}
.stat-pill .stat-num{font-size:clamp(24px,2.8vw,36px);font-weight:800;color:var(--accent);line-height:1}
.stat-pill .stat-label{font-size:12px;color:rgba(255,255,255,.65);white-space:nowrap}
.stat-pill i{margin-left:4px;color:rgba(255,255,255,.4)}

.delivery-section{padding:96px 0;background:var(--bg-light)}
.delivery-grid{margin-top:16px}
.delivery-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow-1);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s;height:100%;display:flex;flex-direction:column}
.delivery-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,229,160,.3)}
.delivery-card img{width:100%;height:190px;object-fit:cover}
.delivery-card-body{padding:28px;position:relative;flex:1;display:flex;flex-direction:column}
.card-step{position:absolute;top:-14px;left:24px;width:36px;height:36px;border-radius:10px;background:var(--gradient);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(0,168,107,.3)}
.delivery-card-body h3{font-size:19px;color:var(--text-dark);margin-bottom:4px;margin-top:8px}
.delivery-card--lg img{height:220px}
.delivery-card--lg .delivery-card-body{padding:34px 32px 40px}
@media(min-width:992px){
  .delivery-card--offset{margin-top:44px}
  .delivery-card--lg{margin-bottom:0}
}
@media(min-width:768px) and (max-width:991px){
  .delivery-card--offset{margin-top:0}
}

.process-section{padding:96px 0;background:var(--bg-dark);color:#fff;position:relative;overflow:hidden}
.process-section::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.1}
.process-section .section-head p{color:var(--text-secondary-dark)}
.process-section .section-head h2{color:#fff}
.process-row{position:relative;z-index:2;margin-top:16px}
.process-step{position:relative;padding-left:0;margin-bottom:40px}
.process-step::before{content:"";position:absolute;top:48px;left:26px;width:2px;height:calc(100% - 32px);background:linear-gradient(180deg,var(--primary),transparent);opacity:.25}
@media(min-width:992px){
  .process-step::before{display:none}
  .process-row{display:flex}
}
.step-num{width:52px;height:52px;border-radius:14px;background:rgba(255,184,0,.12);border:1px solid rgba(255,184,0,.35);color:var(--accent);font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:20px;transition:all .25s}
.process-step:hover .step-num{background:var(--gradient);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(0,168,107,.4)}
.process-step h3{font-size:20px;margin-bottom:10px;color:#fff}
.process-step p{color:var(--text-secondary-dark);font-size:15px;line-height:1.8}
@media(min-width:992px){
  .process-row .col-lg-3:not(:last-child) .process-step::after{content:"";position:absolute;top:26px;right:-16px;width:32px;height:2px;background:linear-gradient(90deg,var(--primary),transparent);opacity:.35;z-index:1}
}

.quality-section{padding:96px 0;background:var(--bg-light)}
.quality-item{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow-1);padding:36px 32px;height:100%;transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.quality-item::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);opacity:0;transition:opacity .3s}
.quality-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,229,160,.25)}
.quality-item:hover::before{opacity:1}
.quality-item .qi-icon{width:56px;height:56px;border-radius:14px;background:rgba(0,168,107,.08);color:var(--primary-dark);font-size:24px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.quality-item h3{font-size:20px;margin-bottom:12px;color:var(--text-dark)}
.quality-item p{color:var(--text-secondary);font-size:15px;line-height:1.8}
.quality-item .qi-tag{display:inline-block;background:var(--accent-soft);color:#B77900;font-size:12px;font-weight:600;padding:4px 12px;border-radius:100px;margin-top:16px}

.faq-section{padding:96px 0;background:var(--bg-light)}
.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius-md);border:1px solid var(--border-light);box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;transition:border-color .3s,box-shadow .3s}
.faq-item.active{border-color:rgba(0,229,160,.35);box-shadow:var(--shadow-2)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-dark);text-align:left;background:transparent;transition:color .25s}
.faq-question i{font-size:14px;color:var(--text-secondary);transition:transform .3s,color .3s;flex-shrink:0}
.faq-item.active .faq-question{color:var(--primary-dark)}
.faq-item.active .faq-question i{transform:rotate(180deg);color:var(--primary-dark)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;background:#fff}
.faq-answer p{padding:0 24px 22px;color:var(--text-secondary);font-size:15px;line-height:1.8;border-top:1px solid rgba(0,0,0,.04);padding-top:16px}
.faq-item.active .faq-answer{max-height:400px}

.cta-section{padding:96px 0;background:var(--bg-dark);color:#fff;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.16}
.cta-section::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(12,18,22,.9),rgba(0,168,107,.4));z-index:1}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(28px,3.4vw,38px);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.cta-inner p{color:var(--text-secondary-dark);font-size:17px;margin-bottom:32px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:72px 0 0;border-top:1px solid var(--border-dark)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.footer-brand{max-width:360px}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:700;margin-bottom:16px}
.footer-logo:hover{color:var(--primary)}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-secondary-dark);margin-bottom:12px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--gradient)}
.footer-col a{display:block;color:var(--text-secondary-dark);font-size:14px;padding:6px 0;transition:color .2s,padding-left .2s}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.contact-item{display:flex;align-items:center;gap:10px;color:var(--text-secondary-dark);font-size:14px;padding:6px 0}
.contact-item i{color:var(--primary);width:16px;text-align:center}
.footer-bottom{border-top:1px solid var(--border-dark);padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.35)}
.footer-domain{opacity:.6}
@media(max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
}

@media(max-width:991px){
  .nav-toggle{display:flex}
  .nav-menu{position:absolute;top:100%;left:0;right:0;background:var(--bg-dark);flex-direction:column;align-items:stretch;padding:16px 24px 24px;gap:8px;border-bottom:1px solid var(--border-dark);box-shadow:var(--shadow-3);display:none;max-height:calc(100vh - 80px);overflow-y:auto}
  .nav-menu.nav-open{display:flex}
  .nav-menu .nav-item{padding:12px 16px;font-size:15px}
  .nav-menu .nav-cta{margin-left:0;margin-top:8px;text-align:center;justify-content:center}
  .hero .hero-container{padding-top:60px;padding-bottom:72px}
  .hero-stats{gap:10px}
  .stat-pill{padding:10px 16px}
  .delivery-section,.process-section,.quality-section,.faq-section,.cta-section{padding:64px 0}
}
@media(max-width:575px){
  .hero-actions .btn{flex:1;justify-content:center}
  .hero-stats{flex-direction:column;align-items:stretch}
  .stat-pill{justify-content:flex-start}
  .section-head{margin-bottom:40px}
  .delivery-card-body{padding:24px 20px}
  .delivery-card img{height:160px}
  .process-step{padding-left:0}
}

/* roulang page: category4 */
:root{
  --primary:#00E5A0;
  --primary-dark:#00A86B;
  --primary-hover:#00B87A;
  --accent:#FFB800;
  --warning:#FF6A3D;
  --dark-bg:#0C1216;
  --dark-card:#131C22;
  --light-bg:#F8F7F4;
  --text-main:#1F2937;
  --text-sub:#6B7280;
  --text-on-dark:#F3F4F6;
  --text-sub-dark:#A1A1AA;
  --border-light:rgba(0,0,0,0.06);
  --border-dark:rgba(255,255,255,0.08);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:8px;
  --shadow-1:0 4px 20px rgba(0,0,0,0.05);
  --shadow-2:0 12px 32px rgba(0,0,0,0.08);
  --transition:.3s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  color:var(--text-main);
  background:var(--light-bg);
  line-height:1.7;
  margin:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;}
a{text-decoration:none;color:inherit;}
a:hover{color:inherit;}
ul{list-style:none;margin:0;padding:0;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
.section{padding:80px 0;}
.section-title{font-size:32px;font-weight:700;color:var(--text-main);margin-bottom:12px;letter-spacing:-0.02em;}
.section-sub{font-size:16px;color:var(--text-sub);margin-bottom:48px;}
.text-gradient{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.badge-tag{display:inline-block;padding:6px 16px;border-radius:8px;font-size:13px;font-weight:500;background:rgba(0,229,160,0.12);color:var(--primary-dark);margin:4px;}

/* Bootstrap 覆盖 */
.btn{
  border-radius:12px;
  font-weight:600;
  padding:12px 28px;
  transition:all var(--transition);
  border:1.5px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;
  border:none;
}
.btn-primary:hover,.btn-primary:focus{
  background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary-dark) 100%);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,168,107,0.25);
}
.btn-outline{
  background:transparent;
  border:1.5px solid var(--accent);
  color:var(--text-main);
}
.btn-outline:hover{
  background:rgba(255,184,0,0.1);
  color:var(--text-main);
  border-color:var(--accent);
}
.btn-lg{padding:14px 36px;font-size:16px;}
.btn-block{width:100%;}
.form-control{
  height:52px;
  border-radius:12px;
  border:1px solid #E5E7EB;
  padding:0 16px;
  font-size:15px;
  background:#fff;
  color:var(--text-main);
}
.form-control:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(0,229,160,0.12);
  outline:none;
}
.form-select{
  height:52px;
  border-radius:12px;
  border:1px solid #E5E7EB;
  padding:0 16px;
  font-size:15px;
}

/* Header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(12,18,22,0.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-dark);
}
.header-nav{
  max-width:1200px;
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand-logo{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:700;font-size:20px;letter-spacing:-0.01em;
  flex-shrink:0;
}
.logo-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;
}
.nav-menu{
  display:flex;align-items:center;gap:4px;
  background:rgba(255,255,255,0.04);
  padding:6px;
  border-radius:16px;
  flex-wrap:wrap;
}
.nav-item{
  display:flex;align-items:center;gap:6px;
  padding:8px 14px;
  border-radius:10px;
  color:rgba(255,255,255,0.72);
  font-size:14px;
  font-weight:500;
  transition:all var(--transition);
  border:1px solid transparent;
  white-space:nowrap;
}
.nav-item i{font-size:15px;opacity:0.85;}
.nav-item:hover{
  background:rgba(0,229,160,0.1);
  color:#fff;
}
.nav-item.active{
  background:rgba(0,229,160,0.2);
  color:var(--primary);
  border-color:rgba(0,229,160,0.4);
}
.nav-cta{
  margin-left:10px;
  padding:9px 22px;
  font-size:14px;
}
.nav-toggle{
  display:none;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--border-dark);
  color:#fff;
  width:44px;height:44px;
  border-radius:12px;
  font-size:18px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{background:rgba(0,229,160,0.15);}
.nav-toggle:focus{outline:2px solid var(--primary);outline-offset:2px;}

/* Hero */
.hero{
  position:relative;
  background:var(--dark-bg);
  color:#fff;
  padding:72px 0 56px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:0.4;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,18,22,0.95) 0%,rgba(12,18,22,0.7) 55%,rgba(12,18,22,0.4) 100%);
}
.hero-content{position:relative;z-index:2;}
.breadcrumb-custom{
  display:flex;align-items:center;gap:8px;
  font-size:14px;
  color:rgba(255,255,255,0.55);
  margin-bottom:28px;
}
.breadcrumb-custom a{color:rgba(255,255,255,0.75);}
.breadcrumb-custom a:hover{color:var(--primary);}
.breadcrumb-custom i{font-size:12px;}
.hero-title{
  font-size:clamp(32px,4vw,56px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-0.02em;
  margin-bottom:24px;
  max-width:640px;
}
.hero-sub{
  font-size:18px;
  color:rgba(255,255,255,0.75);
  max-width:560px;
  margin-bottom:36px;
  line-height:1.8;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-badge{
  position:absolute;
  z-index:3;
  right:40px;
  top:50%;
  display:flex;
  flex-direction:column;
  gap:16px;
  transform:translateY(-50%);
}
.hero-badge-item{
  display:flex;align-items:center;gap:12px;
  background:rgba(0,0,0,0.35);
  border:1px solid rgba(255,255,255,0.12);
  backdrop-filter:blur(8px);
  padding:16px 24px;
  border-radius:50px;
  min-width:210px;
}
.hero-badge-item .badge-num{
  font-size:clamp(24px,3vw,40px);
  font-weight:700;
  color:var(--accent);
  line-height:1;
}
.hero-badge-item .badge-label{
  font-size:12px;
  color:rgba(255,255,255,0.75);
  line-height:1.4;
}

/* 信任数据条 */
.stat-strip{
  background:var(--dark-bg);
  padding:24px 0 0;
  border-top:1px solid rgba(255,255,255,0.06);
}
.stat-strip-inner{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.stat-item{
  display:flex;align-items:center;gap:12px;
  background:rgba(255,255,255,0.04);
  border-radius:16px;
  padding:18px 28px;
  border:1px solid rgba(255,255,255,0.07);
  flex:1;
  min-width:170px;
  justify-content:center;
}
.stat-item .stat-num{
  font-size:32px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
}
.stat-item .stat-label{
  font-size:14px;
  color:rgba(255,255,255,0.65);
}

/* Banner 大图 */
.banner-block{
  padding:40px 0 0;
}
.banner-image{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
}
.banner-image img{
  width:100%;
  height:420px;
  object-fit:cover;
  display:block;
}
.banner-overlay{
  position:absolute;
  inset:auto 0 0 0;
  padding:40px;
  background:linear-gradient(180deg,transparent,rgba(12,18,22,0.82));
  color:#fff;
}
.banner-overlay h2{
  font-size:28px;
  font-weight:700;
  margin-bottom:8px;
}
.banner-overlay p{
  font-size:16px;
  color:rgba(255,255,255,0.8);
  margin-bottom:0;
}

/* 分栏文本 */
.split-block{padding:80px 0 40px;}
.split-left h2{
  font-size:36px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:-0.02em;
  margin-bottom:0;
}
.split-right p{
  font-size:16px;
  color:var(--text-sub);
  margin-bottom:16px;
}
.split-right p:last-child{margin-bottom:0;}

/* 核心卖点 */
.feature-section{padding:40px 0 80px;}
.feature-card{
  height:100%;
  background:#fff;
  border-radius:var(--radius-lg);
  padding:32px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-1);
  transition:all var(--transition);
}
.feature-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(0,229,160,0.3);
}
.feature-icon{
  width:52px;height:52px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(0,229,160,0.15),rgba(0,168,107,0.1));
  color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
  margin-bottom:20px;
}
.feature-card h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:12px;
  color:var(--text-main);
}
.feature-card p{
  font-size:15px;
  color:var(--text-sub);
  margin-bottom:0;
  line-height:1.8;
}
.feature-points{
  margin-top:16px;
  padding:0;
  list-style:none;
}
.feature-points li{
  font-size:14px;
  color:var(--text-sub);
  padding:6px 0;
  display:flex;
  align-items:flex-start;
  gap:8px;
}
.feature-points li i{
  color:var(--primary-dark);
  margin-top:3px;
}

/* 适用场景 */
.scene-section{
  background:var(--dark-bg);
  color:#fff;
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.scene-section::before{
  content:"";
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:0.14;
}
.scene-inner{position:relative;z-index:2;}
.scene-section .section-title{color:#fff;}
.scene-section .section-sub{color:rgba(255,255,255,0.6);}
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.scene-item{
  display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--radius-md);
  padding:18px 22px;
  transition:all var(--transition);
}
.scene-item:hover{
  background:rgba(0,229,160,0.08);
  border-color:rgba(0,229,160,0.3);
  transform:translateY(-2px);
}
.scene-item .scene-icon{
  width:40px;height:40px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  display:flex;align-items:center;justify-content:center;
  color:#fff;
  font-size:17px;
  flex-shrink:0;
}
.scene-item span{
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,0.9);
}

/* 时间线 */
.timeline-section{padding:80px 0;}
.timeline{
  position:relative;
  padding-left:44px;
  max-width:780px;
  margin:0 auto;
}
.timeline::before{
  content:"";
  position:absolute;
  left:16px;
  top:8px;
  bottom:8px;
  width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,rgba(0,229,160,0.1) 100%);
}
.timeline-item{
  position:relative;
  margin-bottom:36px;
}
.timeline-item:last-child{margin-bottom:0;}
.timeline-marker{
  position:absolute;
  left:-34px;
  top:28px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 5px rgba(0,229,160,0.2);
}
.timeline-card{
  background:#fff;
  border-radius:var(--radius-md);
  padding:28px 32px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-1);
  transition:all var(--transition);
}
.timeline-card:hover{
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
}
.stage-num{
  display:inline-block;
  background:var(--accent);
  color:#1F2937;
  font-weight:700;
  font-size:13px;
  padding:4px 14px;
  border-radius:var(--radius-sm);
  margin-bottom:12px;
  letter-spacing:0.04em;
}
.timeline-card h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:8px;
}
.timeline-card p{
  font-size:15px;
  color:var(--text-sub);
  margin-bottom:0;
  line-height:1.8;
}

/* 对比表 */
.compare-section{
  background:#fff;
  padding:80px 0;
}
.compare-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
  margin-top:30px;
}
.compare-card{
  position:relative;
  border-radius:var(--radius-lg);
  padding:36px 32px 28px;
  border:1px solid var(--border-light);
  background:var(--light-bg);
  box-shadow:var(--shadow-1);
}
.compare-card.flagship{
  border:2px solid var(--primary);
  box-shadow:0 12px 32px rgba(0,168,107,0.1);
}
.compare-card .plan-tag{
  position:absolute;
  top:-12px;
  right:24px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  font-size:13px;
  font-weight:600;
  padding:4px 16px;
  border-radius:var(--radius-sm);
}
.compare-card h3{
  font-size:22px;
  font-weight:700;
  margin-bottom:6px;
}
.compare-card .plan-desc{
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:20px;
}
.check-list li{
  font-size:15px;
  color:var(--text-main);
  padding:9px 0;
  border-bottom:1px solid rgba(0,0,0,0.05);
  display:flex;
  align-items:center;
  gap:10px;
}
.check-list li:last-child{border-bottom:none;}
.check-list li i{
  color:var(--primary-dark);
  font-size:14px;
}
.check-list li .muted{
  color:var(--text-sub);
  font-size:13px;
}
.compare-cta{
  margin-top:24px;
}

/* FAQ */
.faq-section{padding:80px 0;}
.faq-wrap{max-width:780px;margin:0 auto;}
.faq-item{
  background:#fff;
  border-radius:var(--radius-md);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-1);
  margin-bottom:16px;
  overflow:hidden;
  transition:all var(--transition);
}
.faq-item:hover{border-color:rgba(0,229,160,0.2);}
.faq-question{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:none;
  border:none;
  padding:22px 28px;
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  text-align:left;
  cursor:pointer;
  transition:color var(--transition);
}
.faq-question:hover{color:var(--primary-dark);}
.faq-question .faq-icon{
  width:28px;height:28px;
  border-radius:8px;
  background:rgba(0,229,160,0.1);
  color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;
  transition:all var(--transition);
  flex-shrink:0;
}
.faq-item.open .faq-icon{
  background:var(--primary);
  color:#fff;
  transform:rotate(45deg);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height 0.3s ease;
}
.faq-answer-inner{
  padding:0 28px 24px;
  font-size:15px;
  color:var(--text-sub);
  line-height:1.85;
  border-top:1px dashed rgba(0,0,0,0.06);
  padding-top:18px;
}

/* CTA */
.cta-section{
  background:var(--dark-bg);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:0.18;
}
.cta-wrapper{
  position:relative;
  z-index:2;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.09);
  border-radius:var(--radius-lg);
  padding:48px;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:48px;
}
.cta-form-side h2{
  color:#fff;
  font-size:28px;
  font-weight:700;
  margin-bottom:10px;
}
.cta-form-side .cta-desc{
  color:rgba(255,255,255,0.6);
  font-size:15px;
  margin-bottom:28px;
}
.cta-form .form-control,
.cta-form .form-select{
  background:rgba(255,255,255,0.08);
  border-color:rgba(255,255,255,0.12);
  color:#fff;
  margin-bottom:14px;
}
.cta-form .form-control::placeholder{color:rgba(255,255,255,0.4);}
.cta-form .form-control:focus,
.cta-form .form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(0,229,160,0.15);
  background:rgba(255,255,255,0.1);
}
.cta-form select option{color:var(--text-main);}
.cta-contact-side{
  background:rgba(12,18,22,0.6);
  border-radius:var(--radius-md);
  padding:32px;
  border:1px solid rgba(255,255,255,0.06);
}
.cta-contact-side h3{
  color:#fff;
  font-size:20px;
  font-weight:700;
  margin-bottom:24px;
}
.contact-info-item{
  display:flex;
  align-items:center;
  gap:12px;
  color:rgba(255,255,255,0.75);
  font-size:15px;
  margin-bottom:16px;
}
.contact-info-item i{
  width:34px;height:34px;
  border-radius:8px;
  background:rgba(0,229,160,0.15);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;
  flex-shrink:0;
}

/* 相关分类 */
.related-section{padding:80px 0;}
.related-card{
  display:block;
  height:100%;
  background:#fff;
  border-radius:var(--radius-lg);
  padding:32px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-1);
  transition:all var(--transition);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:rgba(0,229,160,0.3);
}
.related-card .related-icon{
  width:46px;height:46px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:16px;
}
.related-card h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  color:var(--text-main);
}
.related-card p{
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:20px;
  line-height:1.7;
}
.related-card .link-arrow{
  font-size:14px;
  font-weight:600;
  color:var(--primary-dark);
  display:flex;
  align-items:center;
  gap:6px;
}
.related-card .link-arrow i{transition:transform var(--transition);}
.related-card:hover .link-arrow i{transform:translateX(4px);}

/* Footer */
.site-footer{
  background:var(--dark-bg);
  color:rgba(255,255,255,0.6);
  padding-top:60px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 0.8fr 0.9fr 0.9fr;
  gap:48px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.footer-logo{
  display:flex;align-items:center;gap:10px;
  color:#fff;
  font-size:20px;
  font-weight:700;
  margin-bottom:18px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,0.55);
  margin-bottom:12px;
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:20px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,0.55);
  padding:6px 0;
  transition:all var(--transition);
}
.footer-col a:hover{color:var(--primary);padding-left:4px;}
.contact-item{
  display:flex;align-items:center;gap:10px;
  font-size:14px;
  color:rgba(255,255,255,0.55);
  margin-bottom:12px;
}
.contact-item i{color:var(--primary);width:16px;text-align:center;}
.footer-bottom{
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,0.35);
}
.footer-domain{opacity:0.7;}

/* 响应式 */
@media (max-width:991px){
  .section{padding:60px 0;}
  .hero-title{max-width:100%;}
  .hero-badge{display:none;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .compare-row{grid-template-columns:1fr;}
  .cta-wrapper{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .header-nav{padding:12px 16px;}
  .nav-toggle{display:flex;}
  .nav-menu{
    display:none;
    position:absolute;
    top:68px;
    left:16px;
    right:16px;
    background:var(--dark-card);
    border:1px solid var(--border-dark);
    border-radius:16px;
    padding:14px;
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
    box-shadow:0 20px 40px rgba(0,0,0,0.4);
  }
  .nav-menu.open{display:flex;}
  .nav-item{width:100%;padding:12px 14px;}
  .nav-cta{width:100%;margin:8px 0 0;justify-content:center;}
  .hero{padding:48px 0 40px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:16px;}
  .stat-strip-inner{flex-direction:column;}
  .stat-item{justify-content:flex-start;}
  .banner-overlay{padding:24px;}
  .banner-overlay h2{font-size:22px;}
  .banner-image img{height:280px;}
  .split-left h2{font-size:28px;}
  .scene-grid{grid-template-columns:1fr;}
  .timeline{padding-left:28px;}
  .timeline-card{padding:22px;}
  .compare-card{padding:28px 20px;}
  .faq-question{padding:18px 20px;font-size:15px;}
  .faq-answer-inner{padding:0 20px 20px;}
  .cta-wrapper{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}