/* roulang page: index */
:root {
  --bg: #0A1628;
  --bg-alt: #0E1F36;
  --bg-deep: #070F1D;
  --primary: #1B3A5C;
  --accent: #38E1B5;
  --hl: #FFC46B;
  --text: #E6EDF5;
  --text-dim: #9DB2C8;
  --disabled: #3D5068;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --glass-highlight: rgba(255,255,255,0.18);
  --divider: rgba(255,255,255,0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --glow-accent: 0 0 20px rgba(56,225,181,0.5);
  --glow-accent-hover: 0 0 32px rgba(56,225,181,0.65);
  --container: 1200px;
  --pad: 24px;
  --gap: 32px;
  --section-y: 96px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
}

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

input, textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
}

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.section {
  padding: var(--section-y) 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head .eyebrow::before,
.section-head .eyebrow::after {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

.section-head p {
  max-width: 560px;
  margin: 16px auto 0;
  color: var(--text-dim);
  font-size: 15px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, #38E1B5, #2BC8A0);
  color: #081420;
  box-shadow: var(--glow-accent);
}

.btn-primary:hover {
  box-shadow: var(--glow-accent-hover);
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-secondary {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  color: var(--text);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(56,225,181,0.25);
}

.btn-lg {
  height: 54px;
  padding: 0 40px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  background: var(--disabled);
  box-shadow: none;
  cursor: not-allowed;
  filter: saturate(0.4);
}

/* Header Navigation */
.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  pointer-events: none;
}

.nav-pill {
  max-width: 1160px;
  margin: 0 auto;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 20px;
  height: 64px;
  border-radius: var(--radius-pill);
  background: rgba(10, 22, 40, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(56,225,181,0.25), rgba(56,225,181,0.05));
  border: 1px solid rgba(56,225,181,0.4);
  color: var(--accent);
  font-size: 15px;
  box-shadow: 0 0 12px rgba(56,225,181,0.3) inset;
}

.brand-text {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--accent);
  background: rgba(56,225,181,0.08);
}

.nav-link.active {
  color: var(--hl);
  background: rgba(255,196,107,0.2);
}

.nav-cta {
  height: 40px;
  padding: 0 22px;
  font-size: 14px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 16px;
  margin-left: auto;
}

.mobile-nav {
  display: none;
  pointer-events: auto;
  max-width: 1160px;
  margin: 12px auto 0;
  padding: 16px 20px;
  border-radius: 20px;
  background: rgba(10, 22, 40, 0.88);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.mobile-nav a {
  display: block;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 500;
}

.mobile-nav a.active {
  background: rgba(255,196,107,0.2);
  color: var(--hl);
}

.mobile-nav a:hover {
  background: rgba(56,225,181,0.08);
  color: var(--accent);
}

.mobile-nav .mobile-cta {
  margin-top: 8px;
  text-align: center;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  background-image: linear-gradient(180deg, rgba(10,22,40,0.88) 0%, rgba(10,22,40,0.72) 50%, rgba(10,22,40,0.96) 100%), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,225,181,0.14) 0%, rgba(56,225,181,0) 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(56,225,181,0.1);
  border: 1px solid rgba(56,225,181,0.3);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-badge i {
  font-size: 12px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero h1 .accent {
  color: var(--accent);
  text-shadow: 0 0 24px rgba(56,225,181,0.35);
}

.hero-sub {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 460px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 460px;
}

.portal-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(56,225,181,0.4);
  background: rgba(56,225,181,0.03);
}

.ring-outer {
  width: 420px;
  height: 420px;
  animation: pulse 4s ease-in-out infinite;
}

.ring-mid {
  width: 320px;
  height: 320px;
  border-color: rgba(56,225,181,0.3);
  background: rgba(56,225,181,0.05);
  animation: pulse 4s ease-in-out 0.6s infinite;
}

.ring-inner {
  width: 220px;
  height: 220px;
  border-color: rgba(255,196,107,0.5);
  background: radial-gradient(circle, rgba(255,196,107,0.15), rgba(56,225,181,0.05));
  box-shadow: 0 0 60px rgba(56,225,181,0.2) inset, 0 0 80px rgba(56,225,181,0.1);
  animation: pulse 4s ease-in-out 1.2s infinite;
}

.portal-core {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(56,225,181,0.5), rgba(56,225,181,0.15));
  border: 1px solid var(--accent);
  box-shadow: 0 0 40px rgba(56,225,181,0.45);
  color: #06121e;
  font-size: 28px;
  z-index: 2;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.04); opacity: 0.85; }
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 14px;
  letter-spacing: 2px;
  z-index: 3;
}

.mouse-icon {
  width: 26px;
  height: 42px;
  border-radius: 14px;
  border: 2px solid var(--text-dim);
  position: relative;
}

.mouse-icon::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  border-radius: 4px;
  background: var(--accent);
  animation: scrollDot 1.6s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { opacity: 1; transform: translate(-50%, 0); }
  70% { opacity: 0; transform: translate(-50%, 14px); }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* Quick entry bar */
.hero-quick {
  position: relative;
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.quick-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border-radius: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

.quick-item i {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56,225,181,0.12);
  color: var(--accent);
  font-size: 16px;
  flex-shrink: 0;
}

.quick-item .quick-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.quick-item .quick-desc {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

.quick-item:hover {
  transform: translateY(-4px);
  border-color: rgba(56,225,181,0.45);
  box-shadow: 0 12px 36px rgba(0,0,0,0.4), 0 0 16px rgba(56,225,181,0.15);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

.service-card {
  position: relative;
  padding: 32px 28px 28px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
}

.service-card:nth-child(even) {
  transform: translateY(36px);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56,225,181,0.4);
  box-shadow: 0 14px 40px rgba(0,0,0,0.42), 0 0 20px rgba(56,225,181,0.1);
}

.service-card:nth-child(even):hover {
  transform: translateY(32px);
}

.service-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(56,225,181,0.35);
  letter-spacing: -1px;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(56,225,181,0.2), rgba(56,225,181,0.06));
  border: 1px solid rgba(56,225,181,0.3);
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 20px;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

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

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

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.stat-num {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(56,225,181,0.45);
  letter-spacing: 1px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 12px;
}

/* Cases */
.cases-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding-bottom: 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.cases-track::-webkit-scrollbar {
  height: 6px;
}

.cases-track::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.04);
  border-radius: 10px;
}

.cases-track::-webkit-scrollbar-thumb {
  background: rgba(56,225,181,0.35);
  border-radius: 10px;
}

.case-card {
  flex: 0 0 340px;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56,225,181,0.4);
  box-shadow: 0 16px 44px rgba(0,0,0,0.45), 0 0 16px rgba(56,225,181,0.12);
}

.case-cover {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.case-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,22,40,0.6));
}

.case-body {
  padding: 24px;
}

.case-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--accent);
  background: rgba(56,225,181,0.08);
  border: 1px solid rgba(56,225,181,0.25);
  margin-bottom: 12px;
}

.case-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-body p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* Solutions */
.solutions-wrap {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 72px;
  align-items: start;
}

.solutions-left {
  position: sticky;
  top: 120px;
}

.solutions-left h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
}

.solutions-left p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 24px;
}

.solutions-left .btn {
  margin-top: 8px;
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.flow-item {
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.flow-item.active {
  border-color: rgba(56,225,181,0.4);
  box-shadow: 0 0 20px rgba(56,225,181,0.08);
}

.flow-head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 24px;
  cursor: pointer;
  user-select: none;
}

.flow-step {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(56,225,181,0.1);
  border: 1px solid rgba(56,225,181,0.3);
}

.flow-head .flow-title {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.flow-head .flow-toggle {
  color: var(--text-dim);
  transition: transform 0.3s ease;
}

.flow-item.active .flow-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

.flow-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}

.flow-item.active .flow-body {
  max-height: 200px;
  padding: 0 24px 22px;
}

.flow-body p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
  padding-left: 52px;
}

/* News / CMS list */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.news-card {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
  transform: translateY(-2px);
  border-color: rgba(56,225,181,0.4);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3), 0 0 14px rgba(56,225,181,0.08);
}

.news-tag {
  flex-shrink: 0;
  padding: 3px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--accent);
  background: rgba(56,225,181,0.08);
  border: 1px solid rgba(56,225,181,0.25);
}

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

.news-main h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-main p {
  font-size: 14px;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-date {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-date i {
  font-size: 12px;
}

.empty-state {
  padding: 48px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px dashed var(--glass-border);
  color: var(--text-dim);
  font-size: 15px;
}

.news-more {
  text-align: center;
  margin-top: 28px;
}

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

.faq-item {
  margin-bottom: 14px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item.active {
  border-color: rgba(56,225,181,0.4);
  box-shadow: 0 0 20px rgba(56,225,181,0.06);
}

.faq-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}

.faq-head h3 {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56,225,181,0.1);
  border: 1px solid rgba(56,225,181,0.3);
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-body {
  max-height: 220px;
  padding: 0 24px 20px 62px;
}

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

/* Contact CTA */
.contact-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px;
  border-radius: 24px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.contact-wrap::before {
  content: "";
  position: absolute;
  top: -120px;
  left: -120px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,225,181,0.12), transparent 70%);
  pointer-events: none;
}

.contact-info h2 {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
}

.contact-info h2 .accent {
  color: var(--accent);
}

.contact-info p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.contact-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-dim);
}

.contact-meta .meta-item i {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56,225,181,0.1);
  color: var(--accent);
  font-size: 14px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 32px;
  border-radius: 20px;
  background: rgba(10,22,40,0.5);
  border: 1px solid var(--glass-border);
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  color: var(--text);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56,225,181,0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--disabled);
}

.form-tip {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: -8px;
}

.form-success {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(56,225,181,0.1);
  border: 1px solid rgba(56,225,181,0.3);
  color: var(--accent);
  font-size: 14px;
}

.form-error {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(255,196,107,0.1);
  border: 1px solid rgba(255,196,107,0.4);
  color: var(--hl);
  font-size: 14px;
}

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

/* Footer */
.site-footer {
  background: var(--bg-deep);
  padding: 72px 0 0;
  border-top: 1px solid var(--divider);
}

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

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

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer-col ul a i {
  font-size: 10px;
  color: var(--accent);
  opacity: 0.7;
}

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

.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.footer-contact li strong {
  color: var(--text);
  font-weight: 500;
}

.footer-contact li i {
  display: none;
}

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

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

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

/* Reveal animation */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.hidden-init {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1023px) {
  :root {
    --section-y: 72px;
    --pad: 20px;
  }

  .hero {
    padding-top: 120px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

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

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

  .hero-visual {
    min-height: 360px;
    order: -1;
  }

  .ring-outer { width: 320px; height: 320px; }
  .ring-mid { width: 240px; height: 240px; }
  .ring-inner { width: 160px; height: 160px; }

  .hero-quick {
    margin-top: 40px;
  }

  .services-grid {
    gap: 24px;
  }

  .solutions-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solutions-left {
    position: static;
  }

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

  .contact-wrap {
    grid-template-columns: 1fr;
    padding: 40px 28px;
  }

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

@media (max-width: 767px) {
  :root {
    --section-y: 56px;
    --pad: 16px;
    --gap: 20px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .site-header {
    top: 10px;
    padding: 0 12px;
  }

  .nav-pill {
    height: 56px;
    padding: 0 12px;
    gap: 12px;
  }

  .brand-text {
    font-size: 15px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .mobile-nav.open {
    display: block;
  }

  .hero {
    padding-top: 100px;
    padding-bottom: 60px;
  }

  .hero h1 {
    font-size: 28px;
  }

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

  .hero-actions .btn {
    width: 100%;
    margin-bottom: 4px;
  }

  .hero-visual {
    min-height: 280px;
  }

  .ring-outer { width: 260px; height: 260px; }
  .ring-mid { width: 190px; height: 190px; }
  .ring-inner { width: 130px; height: 130px; }

  .portal-core {
    width: 80px;
    height: 80px;
    font-size: 20px;
  }

  .hero-quick {
    grid-template-columns: 1fr;
  }

  .quick-item {
    padding: 14px 18px;
  }

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

  .service-card:nth-child(even),
  .service-card:nth-child(even):hover {
    transform: none;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

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

  .stat-item {
    padding: 24px 12px;
  }

  .cases-track {
    flex-direction: column;
    overflow-x: visible;
    scroll-snap-type: none;
  }

  .case-card {
    flex: none;
  }

  .contact-wrap {
    padding: 28px 20px;
  }

  .contact-form {
    padding: 24px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding: 16px 0 24px;
  }

  .flow-body p {
    padding-left: 0;
  }

  .faq-item.active .faq-body {
    padding: 0 20px 18px;
  }

  .news-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 18px 20px;
  }

  .news-main h3,
  .news-main p {
    white-space: normal;
  }

  .news-date {
    font-size: 13px;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stat-num {
    font-size: 28px;
  }

  .btn {
    padding: 0 24px;
  }

  .solutions-left h2 {
    font-size: 24px;
  }

  .contact-info h2 {
    font-size: 24px;
  }
}

/* roulang page: category1 */
:root{
  --bg-deep:#0A1628;
  --bg-section:#0E1F36;
  --primary:#1B3A5C;
  --accent:#38E1B5;
  --highlight:#FFC46B;
  --text-main:#E6EDF5;
  --text-sub:#9DB2C8;
  --disabled:#3D5068;
  --glass-bg:rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.12);
  --glass-highlight:rgba(255,255,255,0.18);
  --radius-card:18px;
  --radius-btn:999px;
  --radius-input:12px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --glow-accent:0 0 20px rgba(56,225,181,0.5);
  --glow-accent-hover:0 0 32px rgba(56,225,181,0.65);
  --container-max:1200px;
  --space-section:96px;
  --space-section-md:72px;
  --space-section-sm:48px;
  --font-stack:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg-deep);
  color:var(--text-main);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .25s ease}
a:hover{color:#5df0cb}
button{font-family:var(--font-stack);cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:var(--font-stack)}
ul,ol{list-style:none}
.container{
  max-width:var(--container-max);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--space-section) 0}
.section-alt{background:var(--bg-section)}
.section-head{
  text-align:center;
  max-width:760px;
  margin:0 auto 56px;
}
.section-head .tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(56,225,181,0.1);
  border:1px solid rgba(56,225,181,0.3);
  color:var(--accent);
  font-size:13px;
  font-weight:500;
  padding:6px 18px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-head h2{
  font-size:32px;
  line-height:1.3;
  font-weight:600;
  margin-bottom:14px;
  color:var(--text-main);
}
.section-head p{
  color:var(--text-sub);
  font-size:16px;
  line-height:1.75;
}

/* ===== 悬浮胶囊导航 ===== */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:1000;
  pointer-events:none;
}
.nav-shell{
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  background:rgba(10,22,40,0.7);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--glass-border);
  border-radius:999px;
  padding:10px 24px;
  box-shadow:0 8px 32px rgba(0,0,0,0.35);
  pointer-events:auto;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text-main);
}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(56,225,181,0.25),rgba(56,225,181,0.05));
  border:1px solid rgba(56,225,181,0.35);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-size:17px;
  box-shadow:0 0 18px rgba(56,225,181,0.2);
}
.brand-text{
  font-size:18px;
  font-weight:600;
  letter-spacing:0.5px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  color:var(--text-sub);
  font-size:15px;
  font-weight:400;
  padding:8px 18px;
  border-radius:999px;
  transition:all .25s ease;
  white-space:nowrap;
}
.nav-link:hover{
  color:var(--accent);
  background:rgba(56,225,181,0.08);
}
.nav-link.active{
  background:rgba(255,196,107,0.18);
  color:var(--highlight);
  font-weight:500;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:linear-gradient(135deg,#38E1B5,#2bc99d);
  color:#0A1628;
  font-size:15px;
  font-weight:600;
  padding:10px 26px;
  border-radius:999px;
  box-shadow:var(--glow-accent);
  transition:all .25s ease;
  white-space:nowrap;
  flex-shrink:0;
}
.nav-cta:hover{
  box-shadow:var(--glow-accent-hover);
  transform:translateY(-2px);
  color:#0A1628;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:50%;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--glass-border);
  color:var(--text-main);
  font-size:18px;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.nav-toggle:hover{
  border-color:var(--accent);
  color:var(--accent);
}
.mobile-menu{
  display:none;
  position:fixed;
  top:84px;
  left:16px;
  right:16px;
  background:rgba(10,22,40,0.96);
  backdrop-filter:blur(24px);
  border:1px solid var(--glass-border);
  border-radius:20px;
  padding:20px;
  z-index:999;
  box-shadow:var(--shadow-card);
}
.mobile-menu.open{display:block}
.mobile-menu a{
  display:block;
  color:var(--text-sub);
  font-size:16px;
  padding:14px 16px;
  border-radius:12px;
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:all .25s ease;
}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{background:rgba(56,225,181,0.08);color:var(--accent)}
.mobile-menu a.active{color:var(--highlight);background:rgba(255,196,107,0.1)}

/* ===== Hero ===== */
.security-hero{
  position:relative;
  min-height:90vh;
  display:flex;
  align-items:center;
  padding:140px 0 80px;
  background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
  background-color:var(--bg-deep);
}
.security-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(10,22,40,0.92) 0%,rgba(10,22,40,0.75) 50%,rgba(10,22,40,0.4) 100%);
}
.security-hero::after{
  content:'';
  position:absolute;
  bottom:0;left:0;right:0;
  height:120px;
  background:linear-gradient(transparent,var(--bg-deep));
}
.security-hero .container{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:60px;
  align-items:center;
}
.hero-content .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(56,225,181,0.12);
  border:1px solid rgba(56,225,181,0.3);
  color:var(--accent);
  font-size:13px;
  font-weight:500;
  padding:6px 20px;
  border-radius:999px;
  margin-bottom:24px;
  letter-spacing:1px;
}
.security-hero h1{
  font-size:46px;
  font-weight:600;
  line-height:1.25;
  color:var(--text-main);
  margin-bottom:20px;
}
.security-hero h1 span{
  color:var(--accent);
  text-shadow:0 0 30px rgba(56,225,181,0.35);
}
.hero-desc{
  font-size:17px;
  color:var(--text-sub);
  line-height:1.8;
  margin-bottom:36px;
  max-width:520px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  padding:14px 32px;
  border-radius:999px;
  transition:all .25s ease;
  line-height:1.2;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,#38E1B5,#2bc99d);
  color:#0A1628;
  box-shadow:var(--glow-accent);
}
.btn-primary:hover{
  box-shadow:var(--glow-accent-hover);
  transform:translateY(-2px);
  color:#0A1628;
}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border:1px solid var(--glass-border);
  color:var(--text-main);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}
.hero-visual{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  border:1px solid var(--glass-border);
}
.hero-visual img{
  width:100%;
  height:auto;
  min-height:380px;
  object-fit:cover;
}
.hero-badges{
  position:absolute;
  top:20px;right:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(10,22,40,0.75);
  backdrop-filter:blur(10px);
  border:1px solid rgba(56,225,181,0.3);
  border-radius:999px;
  padding:8px 16px;
  font-size:13px;
  color:var(--accent);
  font-weight:500;
}
.scroll-indicator{
  position:absolute;
  bottom:30px;left:50%;
  transform:translateX(-50%);
  z-index:3;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  color:var(--text-sub);
  font-size:13px;
  letter-spacing:2px;
}
.scroll-indicator i{
  font-size:16px;
  animation:scrollBounce 2s infinite;
}
@keyframes scrollBounce{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(6px)}
}

/* ===== 安全能力编号卡片 ===== */
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
}
.feature-card{
  position:relative;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:40px 36px 36px;
  box-shadow:var(--shadow-card);
  transition:all .3s ease;
  overflow:hidden;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(56,225,181,0.35);
  box-shadow:0 12px 40px rgba(0,0,0,0.45),0 0 20px rgba(56,225,181,0.08);
}
.feature-card .card-num{
  position:absolute;
  top:20px;right:28px;
  font-size:52px;
  font-weight:700;
  color:rgba(255,255,255,0.07);
  line-height:1;
  transition:color .3s ease;
}
.feature-card:hover .card-num{
  color:rgba(56,225,181,0.2);
}
.feature-icon{
  width:58px;height:58px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(56,225,181,0.18),rgba(56,225,181,0.04));
  border:1px solid rgba(56,225,181,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;
  color:var(--accent);
  margin-bottom:24px;
}
.feature-card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:12px;
}
.feature-card p{
  color:var(--text-sub);
  font-size:15px;
  line-height:1.7;
}
.feature-card .feature-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:20px;
  font-size:14px;
  font-weight:500;
  color:var(--accent);
}
.feature-card .feature-link i{
  font-size:12px;
  transition:transform .25s ease;
}
.feature-card .feature-link:hover i{
  transform:translateX(4px);
}

/* ===== 安全数据条 ===== */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-item{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:36px 28px;
  text-align:center;
  box-shadow:var(--shadow-card);
  transition:all .3s ease;
}
.stat-item:hover{
  border-color:rgba(56,225,181,0.35);
  transform:translateY(-4px);
}
.stat-num{
  font-size:48px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  text-shadow:0 0 30px rgba(56,225,181,0.35);
  margin-bottom:8px;
}
.stat-label{
  font-size:14px;
  color:var(--text-sub);
}

/* ===== 保障流程 ===== */
.flow-section .container{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:60px;
  align-items:start;
}
.flow-intro{
  position:sticky;
  top:140px;
}
.flow-intro h2{
  font-size:32px;
  line-height:1.3;
  margin-bottom:16px;
}
.flow-intro p{
  color:var(--text-sub);
  font-size:16px;
  line-height:1.75;
  margin-bottom:28px;
}
.flow-list{
  display:flex;
  flex-direction:column;
  gap:0;
}
.flow-item{
  display:flex;
  gap:24px;
  padding:32px 0;
  border-bottom:1px solid rgba(255,255,255,0.08);
  transition:all .3s ease;
}
.flow-item:last-child{border-bottom:none}
.flow-step{
  flex-shrink:0;
  width:56px;height:56px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(56,225,181,0.15),rgba(56,225,181,0.03));
  border:1px solid rgba(56,225,181,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
}
.flow-body h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:8px;
}
.flow-body p{
  color:var(--text-sub);
  font-size:14px;
  line-height:1.7;
}

/* ===== 场景卡片 ===== */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.scene-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:all .3s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(56,225,181,0.3);
}
.scene-card .scene-img{
  height:200px;
  overflow:hidden;
  position:relative;
}
.scene-card .scene-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.scene-card:hover .scene-img img{
  transform:scale(1.05);
}
.scene-card .scene-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,22,40,0.7) 100%);
}
.scene-card .scene-body{
  padding:24px;
}
.scene-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
}
.scene-card p{
  color:var(--text-sub);
  font-size:14px;
  line-height:1.7;
}
.scene-tag{
  display:inline-block;
  font-size:12px;
  color:var(--accent);
  background:rgba(56,225,181,0.1);
  border:1px solid rgba(56,225,181,0.25);
  padding:3px 12px;
  border-radius:999px;
  margin-bottom:16px;
  font-weight:500;
}

/* ===== FAQ ===== */
.faq-list{
  max-width:800px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:all .3s ease;
}
.faq-item:hover{
  border-color:rgba(56,225,181,0.25);
}
.faq-item.open{
  border-color:rgba(56,225,181,0.4);
}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 28px;
  cursor:pointer;
  font-size:16px;
  font-weight:500;
  color:var(--text-main);
  background:transparent;
  text-align:left;
  transition:color .3s ease;
  width:100%;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex-shrink:0;
  width:32px;height:32px;
  border-radius:50%;
  background:rgba(56,225,181,0.1);
  border:1px solid rgba(56,225,181,0.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-size:14px;
  transition:transform .3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 28px 24px;
  color:var(--text-sub);
  font-size:14px;
  line-height:1.75;
}

/* ===== CTA区域 ===== */
.cta-section{
  padding:80px 0;
  position:relative;
}
.cta-card{
  background:linear-gradient(135deg,rgba(27,58,92,0.6),rgba(10,22,40,0.8));
  border:1px solid var(--glass-border);
  border-radius:24px;
  padding:56px;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.cta-card::before{
  content:'';
  position:absolute;
  top:-60px;right:-60px;
  width:200px;height:200px;
  border-radius:50%;
  background:rgba(56,225,181,0.08);
  filter:blur(60px);
}
.cta-card::after{
  content:'';
  position:absolute;
  bottom:-60px;left:-60px;
  width:200px;height:200px;
  border-radius:50%;
  background:rgba(255,196,107,0.06);
  filter:blur(60px);
}
.cta-card>*{
  position:relative;
  z-index:1;
}
.cta-card h2{
  font-size:32px;
  font-weight:600;
  margin-bottom:14px;
}
.cta-card p{
  color:var(--text-sub);
  font-size:16px;
  max-width:560px;
  margin:0 auto 32px;
  line-height:1.7;
}
.cta-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ===== 页脚 ===== */
.site-footer{
  background:#070F1D;
  padding:72px 0 0;
  border-top:1px solid rgba(255,255,255,0.06);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand p{
  color:var(--text-sub);
  font-size:14px;
  line-height:1.75;
  max-width:320px;
}
.footer-col h4{
  font-size:16px;
  font-weight:600;
  margin-bottom:20px;
  color:var(--text-main);
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul a{
  color:var(--text-sub);
  font-size:14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:all .25s ease;
}
.footer-col ul a i{
  font-size:10px;
  color:var(--accent);
}
.footer-col ul a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-contact li{
  color:var(--text-sub);
  font-size:14px;
  margin-bottom:14px;
  display:flex;
  flex-direction:column;
}
.footer-contact strong{
  color:var(--text-main);
  font-weight:500;
  font-size:13px;
  margin-bottom:2px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:24px 0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  color:var(--text-sub);
  font-size:14px;
}
.footer-bottom a{
  color:var(--text-sub);
}
.footer-bottom a:hover{
  color:var(--accent);
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .main-nav,.nav-cta{
    display:none;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .security-hero{
    padding-top:140px;
    min-height:auto;
  }
  .security-hero .container{
    grid-template-columns:1fr;
    gap:40px;
  }
  .security-hero h1{
    font-size:38px;
  }
  .hero-visual{
    order:2;
  }
  .hero-visual img{
    min-height:280px;
  }
  .flow-section .container{
    grid-template-columns:1fr;
    gap:40px;
  }
  .flow-intro{
    position:static;
  }
  .scene-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:36px;
  }
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width:767px){
  :root{
    --space-section:48px;
    --space-section-md:36px;
  }
  .container{
    padding:0 16px;
  }
  .nav-shell{
    border-radius:18px;
    padding:10px 16px;
  }
  .brand-text{
    font-size:16px;
  }
  .security-hero{
    padding-top:130px;
    padding-bottom:60px;
  }
  .security-hero h1{
    font-size:28px;
  }
  .hero-desc{
    font-size:15px;
  }
  .hero-actions{
    flex-direction:column;
  }
  .hero-actions .btn{
    width:100%;
  }
  .feature-grid{
    grid-template-columns:1fr;
    gap:24px;
  }
  .feature-card{
    padding:28px 24px 24px;
  }
  .scene-grid{
    grid-template-columns:1fr;
  }
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
    gap:16px;
  }
  .stat-num{
    font-size:32px;
  }
  .section-head h2{
    font-size:22px;
  }
  .flow-intro h2{
    font-size:22px;
  }
  .faq-q{
    font-size:15px;
    padding:18px 20px;
  }
  .faq-a-inner{
    padding:0 20px 20px;
  }
  .cta-card{
    padding:36px 24px;
  }
  .cta-card h2{
    font-size:24px;
  }
  .cta-actions{
    flex-direction:column;
  }
  .cta-actions .btn{
    width:100%;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
  .scroll-indicator{
    display:none;
  }
}

/* roulang page: article */
/* ============ Design Variables ============ */
        :root {
            --bg-primary: #0A1628;
            --bg-secondary: #0E1F36;
            --bg-deep: #070F1D;
            --primary: #1B3A5C;
            --accent: #38E1B5;
            --accent-2: #FFC46B;
            --text-primary: #E6EDF5;
            --text-secondary: #9DB2C8;
            --text-disabled: #3D5068;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-highlight: rgba(255, 255, 255, 0.18);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 18px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-w: 1200px;
            --space-section: 96px;
            --space-section-md: 72px;
            --space-section-sm: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            background: var(--bg-primary);
            color: var(--text-primary);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .3s ease;
        }

        a:hover {
            color: #5ff0c8;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--text-primary);
        }

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

        /* ============ Header & Navigation ============ */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 20px;
            pointer-events: none;
        }

        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            max-width: calc(var(--container-w) - 20px);
            width: 100%;
            background: rgba(10, 22, 40, 0.7);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-light);
            border-radius: 60px;
            padding: 10px 18px 10px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            pointer-events: auto;
            transition: box-shadow .3s ease;
        }

        .site-header:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(56, 225, 181, 0.08);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #1B9F8F);
            color: #0A1628;
            font-size: 17px;
            box-shadow: 0 0 16px rgba(56, 225, 181, 0.35);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .brand-text:hover {
            color: var(--accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: all .3s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--accent);
            background: rgba(56, 225, 181, 0.08);
        }

        .nav-link.active {
            color: var(--accent-2);
            background: rgba(255, 196, 107, 0.18);
            font-weight: 600;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 0 28px;
            height: 46px;
            cursor: pointer;
            transition: all .3s ease;
            border: 1px solid transparent;
            text-decoration: none;
        }

        .btn-cta {
            background: linear-gradient(135deg, var(--accent), #2ecfa5);
            color: #0A1628;
            box-shadow: 0 0 20px rgba(56, 225, 181, 0.5);
        }

        .btn-cta:hover {
            box-shadow: 0 0 32px rgba(56, 225, 181, 0.65);
            transform: translateY(-1px);
            color: #0A1628;
            filter: brightness(1.1);
        }

        .btn-cta:active {
            transform: translateY(1px);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--border-light);
            color: var(--text-primary);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(56, 225, 181, 0.06);
        }

        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            padding: 8px 10px;
            border-radius: 10px;
            border: 1px solid transparent;
            transition: all .3s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-light);
        }

        /* ============ Article Hero ============ */
        .article-hero {
            position: relative;
            padding: 160px 0 60px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 22, 40, 0.75) 0%, rgba(10, 22, 40, 0.6) 40%, var(--bg-primary) 100%);
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .3s;
        }

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

        .breadcrumb-sep {
            color: var(--text-disabled);
        }

        .breadcrumb-current {
            color: var(--text-secondary);
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-hero-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            max-width: 840px;
            margin-bottom: 20px;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 5px 14px;
        }

        .meta-item i {
            color: var(--accent);
            font-size: 13px;
        }

        /* ============ Article Body ============ */
        .article-section {
            padding: 40px 0 24px;
        }

        .article-body {
            max-width: 720px;
            margin: 0 auto;
            padding: 40px 48px;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
        }

        .article-body p {
            margin-bottom: 1.6em;
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
        }

        .article-body h2 {
            font-size: 24px;
            margin: 40px 0 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
        }

        .article-body h3 {
            font-size: 19px;
            margin: 28px 0 12px;
            color: var(--text-primary);
        }

        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(56, 225, 181, 0.35);
        }

        .article-body a:hover {
            color: #5ff0c8;
            text-decoration-color: rgba(56, 225, 181, 0.8);
        }

        .article-body img {
            border-radius: 14px;
            margin: 28px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em 1.5em;
            color: var(--text-primary);
            line-height: 1.8;
        }

        .article-body li {
            margin-bottom: 6px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(56, 225, 181, 0.06);
            padding: 16px 22px;
            margin: 28px 0;
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body pre {
            background: #0A1628;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 20px 24px;
            overflow-x: auto;
            margin: 28px 0;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-body code {
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
            color: var(--accent);
            background: rgba(56, 225, 181, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.92em;
        }

        .article-body pre code {
            background: none;
            padding: 0;
            color: var(--text-primary);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
        }

        .article-body th,
        .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body th {
            background: var(--primary);
            color: var(--text-primary);
            font-weight: 600;
        }

        .article-body td {
            background: rgba(255, 255, 255, 0.03);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }

        /* ============ Article Pager ============ */
        .article-pager {
            max-width: 720px;
            margin: 40px auto 0;
            display: flex;
            gap: 16px;
        }

        .pager-link {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 20px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            transition: all .3s ease;
        }

        .pager-link:hover {
            border-color: var(--accent);
            background: rgba(56, 225, 181, 0.06);
            transform: translateY(-2px);
        }

        .pager-direction {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .pager-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .pager-link:hover .pager-title {
            color: var(--accent);
        }

        /* ============ Not Found ============ */
        .not-found {
            max-width: 560px;
            margin: 0 auto 40px;
            padding: 64px 40px;
            text-align: center;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .not-found i {
            font-size: 52px;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }

        .not-found h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ============ Related Section ============ */
        .related-section {
            padding: 64px 0 96px;
            background: var(--bg-secondary);
            margin-top: 64px;
            border-top: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

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

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .3s ease;
            box-shadow: var(--shadow-card);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 225, 181, 0.4);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
        }

        .related-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }

        .related-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 22, 40, 0.6));
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(10, 22, 40, 0.7);
            border: 1px solid rgba(56, 225, 181, 0.3);
            border-radius: 999px;
            padding: 4px 12px;
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
        }

        .related-content {
            padding: 22px 24px 26px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .related-content h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--text-primary);
            transition: color .3s;
        }

        .related-card:hover .related-content h3 {
            color: var(--accent);
        }

        .related-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 4px;
        }

        .related-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-link i {
            transition: transform .3s;
        }

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

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-deep);
            padding: 64px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

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

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

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

        .footer-col ul {
            list-style: none;
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .3s;
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-col ul a i {
            font-size: 10px;
            color: var(--accent);
        }

        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            display: flex;
            flex-direction: column;
        }

        .footer-contact strong {
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 2px;
            font-size: 13px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: var(--text-disabled);
        }

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

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

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

        /* ============ Responsive ============ */
        @media (max-width: 1023px) {
            :root {
                --space-section: var(--space-section-md);
            }

            .main-nav {
                position: fixed;
                top: 84px;
                left: 20px;
                right: 20px;
                background: rgba(10, 22, 40, 0.92);
                -webkit-backdrop-filter: blur(20px);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-light);
                border-radius: 20px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                display: none;
                box-shadow: var(--shadow-card);
                z-index: 1001;
            }

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

            .nav-link {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 12px;
            }

            .nav-toggle {
                display: block;
            }

            .header-container {
                padding: 8px 14px 8px 18px;
            }

            .nav-cta {
                display: none;
            }

            .article-hero {
                padding-top: 140px;
            }

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

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: var(--space-section-sm);
            }

            .container {
                padding: 0 16px;
            }

            .header-container {
                border-radius: 40px;
                padding: 8px 10px 8px 16px;
            }

            .brand-text {
                font-size: 16px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .article-hero {
                padding: 120px 0 40px;
            }

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

            .breadcrumb {
                font-size: 13px;
            }

            .article-body {
                padding: 28px 20px;
                border-radius: 14px;
            }

            .article-body p {
                font-size: 15px;
                line-height: 1.75;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-pager {
                flex-direction: column;
                gap: 12px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-content {
                padding: 18px;
            }

            .related-content h3 {
                font-size: 16px;
            }

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

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

            .not-found {
                padding: 48px 24px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 14px;
            }

            .article-hero-title {
                font-size: 22px;
            }

            .meta-item {
                font-size: 13px;
                padding: 4px 12px;
            }

            .article-body {
                padding: 24px 16px;
            }

            .article-body pre {
                padding: 14px;
                font-size: 13px;
            }

            .related-cover {
                aspect-ratio: 16 / 10;
            }

            .section-head h2 {
                font-size: 24px;
            }
        }

/* roulang page: category2 */
:root{
  --bg:#0A1628;
  --bg-alt:#0E1F36;
  --primary:#1B3A5C;
  --accent:#38E1B5;
  --highlight:#FFC46B;
  --text:#E6EDF5;
  --text-sub:#9DB2C8;
  --disabled:#3D5068;
  --card-bg:rgba(255,255,255,0.06);
  --card-border:rgba(255,255,255,0.12);
  --radius:18px;
  --radius-btn:999px;
  --radius-input:12px;
  --shadow:0 8px 32px rgba(0,0,0,0.35);
  --font-stack:system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container:1200px;
  --gap:32px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
section{position:relative}

/* === 导航 === */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;justify-content:center;padding:0 16px;
}
.header-inner{
  width:100%;max-width:1080px;
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(10,22,40,0.7);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--radius-btn);
  padding:10px 16px 10px 20px;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,rgba(56,225,181,0.25),rgba(56,225,181,0.05));
  border:1px solid rgba(56,225,181,0.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:16px;
}
.brand-text{font-size:18px;font-weight:600;color:var(--text);letter-spacing:0.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-block;padding:8px 18px;border-radius:var(--radius-btn);
  color:var(--text-sub);font-size:14px;font-weight:500;
  transition:color .25s,background .25s,box-shadow .25s;
}
.nav-link:hover{color:var(--accent)}
.nav-link.active{
  color:var(--highlight);
  background:rgba(255,196,107,0.15);
  box-shadow:inset 0 0 0 1px rgba(255,196,107,0.2);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,rgba(56,225,181,0.9),rgba(56,225,181,0.7));
  color:#062A22;font-size:14px;font-weight:600;
  padding:10px 22px;border-radius:var(--radius-btn);
  box-shadow:0 0 18px rgba(56,225,181,0.35);
  transition:transform .25s,box-shadow .25s;
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(56,225,181,0.55)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--card-border);
  color:var(--text);font-size:18px;
  align-items:center;justify-content:center;
}
/* 移动导航面板 */
.mobile-panel{
  display:none;position:fixed;top:76px;left:16px;right:16px;z-index:99;
  background:rgba(10,22,40,0.96);
  border:1px solid var(--card-border);
  border-radius:18px;
  backdrop-filter:blur(20px);
  padding:16px;
  box-shadow:var(--shadow);
}
.mobile-panel.open{display:block}
.mobile-panel .mobile-nav{display:flex;flex-direction:column;gap:8px}
.mobile-panel .nav-link{display:block;padding:12px 16px;border-radius:12px}
.mobile-panel .nav-link.active{background:rgba(255,196,107,0.12)}
.mobile-panel .nav-cta{margin-top:12px;justify-content:center}

/* === Hero === */
.hero{
  min-height:92vh;
  display:flex;align-items:center;
  background:
    linear-gradient(120deg,rgba(10,22,40,0.90) 0%,rgba(10,22,40,0.70) 55%,rgba(14,31,54,0.55) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:140px 0 80px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:120px;
  background:linear-gradient(180deg,transparent,rgba(10,22,40,0.9));
  pointer-events:none;
}
.hero-inner{display:flex;align-items:center;gap:56px}
.hero-content{flex:1.1}
.hero-visual{flex:0.9;position:relative}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(56,225,181,0.1);
  border:1px solid rgba(56,225,181,0.35);
  color:var(--accent);
  font-size:13px;font-weight:500;
  padding:6px 16px;border-radius:var(--radius-btn);
  margin-bottom:22px;
  letter-spacing:0.5px;
}
.hero-title{
  font-size:44px;line-height:1.3;font-weight:700;color:var(--text);
  letter-spacing:1px;
}
.hero-title span{color:var(--accent)}
.hero-subtitle{
  font-size:17px;color:var(--text-sub);
  margin-top:20px;max-width:520px;line-height:1.75;
}
.hero-actions{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 32px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn-primary{
  background:linear-gradient(135deg,rgba(56,225,181,0.95),rgba(56,225,181,0.75));
  color:#062A22;
  box-shadow:0 0 20px rgba(56,225,181,0.45);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,225,181,0.65)}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.22);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.hero-visual .visual-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:24px;
  overflow:hidden;
  padding:10px;
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
  position:relative;
}
.hero-visual .visual-card img{border-radius:16px;width:100%;height:360px;object-fit:cover}
.hero-scroll{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:6px;
  color:var(--text-sub);font-size:13px;z-index:2;
  letter-spacing:1px;
}
.hero-scroll i{font-size:16px;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* === 通用板块 === */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 64px}
.section-tag{
  display:inline-block;font-size:13px;color:var(--accent);
  background:rgba(56,225,181,0.08);
  border:1px solid rgba(56,225,181,0.25);
  padding:5px 16px;border-radius:var(--radius-btn);
  margin-bottom:16px;letter-spacing:1px;
}
.section-title{font-size:32px;line-height:1.3;font-weight:700;color:var(--text)}
.section-desc{font-size:15px;color:var(--text-sub);margin-top:14px;line-height:1.7}

/* === 卖点卡片 2+2 === */
.feature-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;
  max-width:1000px;margin:0 auto;
}
.feature-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:32px 28px;
  position:relative;
  transition:transform .3s,border-color .3s,box-shadow .3s;
  box-shadow:var(--shadow);
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(56,225,181,0.45);box-shadow:0 12px 40px rgba(0,0,0,0.45)}
.feature-card:nth-child(odd){transform:translateY(0)}
.feature-card:nth-child(even){transform:translateY(18px)}
.feature-card:nth-child(even):hover{transform:translateY(14px)}
.feature-num{
  position:absolute;top:22px;right:24px;
  font-size:42px;font-weight:700;color:rgba(255,255,255,0.06);
  line-height:1;
}
.feature-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,rgba(56,225,181,0.18),rgba(56,225,181,0.05));
  border:1px solid rgba(56,225,181,0.35);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:20px;
  margin-bottom:20px;
}
.feature-card h3{font-size:19px;font-weight:600;margin-bottom:12px;color:var(--text)}
.feature-card p{font-size:14px;color:var(--text-sub);line-height:1.7}

/* === 数据条 === */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:36px 20px;
  text-align:center;
  backdrop-filter:blur(10px);
  transition:border-color .3s,transform .3s;
}
.stat-item:hover{border-color:rgba(56,225,181,0.4);transform:translateY(-3px)}
.stat-num{
  font-size:48px;font-weight:700;color:var(--accent);
  text-shadow:0 0 22px rgba(56,225,181,0.5);
  line-height:1.2;
}
.stat-label{font-size:14px;color:var(--text-sub);margin-top:10px;letter-spacing:0.5px}

/* === 场景 === */
.scene-grid{display:flex;align-items:center;gap:64px}
.scene-media{flex:1}
.scene-media .media-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:22px;
  padding:8px;
  box-shadow:var(--shadow);
}
.scene-media img{border-radius:16px;height:340px;object-fit:cover;width:100%}
.scene-content{flex:1}
.scene-content h2{font-size:32px;line-height:1.3;font-weight:700;margin-bottom:28px}
.scene-list{display:flex;flex-direction:column;gap:24px}
.scene-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:16px;
  padding:20px 22px;
  transition:border-color .3s,transform .3s;
}
.scene-item:hover{border-color:rgba(56,225,181,0.4);transform:translateX(4px)}
.scene-item .scene-ico{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:rgba(56,225,181,0.12);
  border:1px solid rgba(56,225,181,0.3);
  color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
}
.scene-item h4{font-size:16px;font-weight:600;margin-bottom:4px;color:var(--text)}
.scene-item p{font-size:14px;color:var(--text-sub);line-height:1.65}

/* === 流程时间线 === */
.process-section{background:var(--bg-alt)}
.process-wrap{max-width:860px;margin:0 auto}
.process-step{
  display:flex;gap:28px;position:relative;padding-bottom:36px;
}
.process-step:last-child{padding-bottom:0}
.process-step::before{
  content:'';position:absolute;left:26px;top:52px;bottom:0;
  width:1px;background:rgba(56,225,181,0.25);
}
.process-step:last-child::before{display:none}
.step-num{
  width:54px;height:54px;border-radius:50%;
  background:rgba(10,22,40,0.9);
  border:1px solid rgba(56,225,181,0.5);
  color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
  flex-shrink:0;
  box-shadow:0 0 20px rgba(56,225,181,0.15);
  z-index:1;
}
.step-content{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:16px;
  padding:22px 26px;
  flex:1;
}
.step-content h3{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--text)}
.step-content p{font-size:14px;color:var(--text-sub);line-height:1.65}

/* === FAQ === */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:16px;
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .3s;
}
.faq-item.open{border-color:rgba(56,225,181,0.4)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 26px;
  cursor:pointer;
  width:100%;
  text-align:left;
  color:var(--text);
  font-size:16px;
  font-weight:500;
  gap:16px;
}
.faq-question:hover{color:var(--accent)}
.faq-icon{
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--card-border);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-size:14px;
  flex-shrink:0;
  transition:transform .3s;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .4s ease;
}
.faq-answer-inner{
  padding:0 26px 22px;
  font-size:14px;color:var(--text-sub);
  line-height:1.7;
  border-top:1px solid rgba(255,255,255,0.06);
  margin:0 26px 0 26px;
  padding:16px 0 0 0;
  padding-bottom:18px;
  margin-left:0;
}
.faq-item.open .faq-answer{max-height:300px}

/* === CTA === */
.cta-section{padding:96px 0}
.cta-card{
  background:linear-gradient(135deg,rgba(27,58,92,0.5),rgba(10,22,40,0.8)),url('/assets/images/backpic/back-3.png') center/cover;
  border:1px solid var(--card-border);
  border-radius:28px;
  padding:64px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-card::before{
  content:'';position:absolute;top:-60px;right:-60px;
  width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,225,181,0.2),transparent 70%);
}
.cta-title{font-size:32px;font-weight:700;color:var(--text);line-height:1.3}
.cta-subtitle{font-size:15px;color:var(--text-sub);margin-top:16px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}

/* === 页脚 === */
.site-footer{background:#070F1D;border-top:1px solid rgba(255,255,255,0.06)}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px;
  padding:64px 0 40px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-sub);line-height:1.7;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;color:var(--text-sub);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .25s;
}
.footer-col a:hover{color:#fff}
.footer-col a i{font-size:11px;color:var(--accent)}
.footer-contact li{font-size:14px;color:var(--text-sub);line-height:1.6}
.footer-contact strong{display:block;color:var(--text);font-weight:500}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:22px 0;
  display:flex;justify-content:space-between;
  font-size:13px;color:var(--disabled);
  gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:var(--text-sub)}
.footer-bottom a:hover{color:#fff}

/* === 动效 === */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* === 响应式 === */
@media(max-width:1023px){
  .hero{padding:140px 0 60px}
  .hero-inner{flex-direction:column;gap:40px}
  .hero-title{font-size:36px}
  .hero-visual{max-width:560px;width:100%;margin:0 auto}
  .feature-card:nth-child(even){transform:translateY(0)}
  .scene-grid{flex-direction:column;gap:40px}
  .stats-bar{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:72px 0}
}
@media(max-width:767px){
  .container{padding:0 16px}
  .site-header{top:10px}
  .header-inner{padding:8px 12px}
  .brand-text{font-size:15px}
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero{padding:120px 0 50px}
  .hero-title{font-size:28px}
  .hero-subtitle{font-size:15px}
  .hero-actions .btn{width:100%}
  .section{padding:56px 0}
  .section-title{font-size:22px}
  .feature-grid{grid-template-columns:1fr;gap:20px}
  .stats-bar{grid-template-columns:1fr 1fr;gap:14px}
  .stat-num{font-size:32px}
  .scene-content h2{font-size:22px}
  .scene-item{flex-direction:column}
  .process-step{gap:14px}
  .step-num{width:42px;height:42px;font-size:15px}
  .process-step::before{left:20px;top:42px}
  .cta-card{padding:40px 20px}
  .cta-title{font-size:24px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .visual-card img{height:240px}
  .scene-media img{height:220px}
  .hero-scroll{display:none}
}
@media(min-width:768px) and (max-width:1023px){
  .feature-card:nth-child(even):hover{transform:translateY(-4px)}
}

/* roulang page: category3 */
:root{
  --bg-deep:#0A1628;
  --bg-section:#0E1F36;
  --primary:#1B3A5C;
  --accent:#38E1B5;
  --gold:#FFC46B;
  --text-main:#E6EDF5;
  --text-sub:#9DB2C8;
  --disabled:#3D5068;
  --border:rgba(255,255,255,.12);
  --card-bg:rgba(255,255,255,.06);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 8px 32px rgba(0,0,0,.35);
  --glow:0 0 20px rgba(56,225,181,.5);
  --container:1200px;
  --font-main:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:var(--bg-deep);
  color:var(--text-main);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-section)}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:2px;
  color:var(--accent);
  text-transform:uppercase;
  border:1px solid rgba(56,225,181,.35);
  padding:4px 18px;
  border-radius:999px;
  margin-bottom:16px;
  background:rgba(56,225,181,.08);
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:600;margin-bottom:14px}
.section-head p{color:var(--text-sub);font-size:15px}
h1,h2,h3,h4{font-weight:600;line-height:1.3}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 32px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  border:1px solid transparent;
  transition:all .3s ease;
  cursor:pointer;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#38E1B5,#2bc9a0);
  color:#081A2A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  box-shadow:0 0 32px rgba(56,225,181,.65);
  transform:translateY(-2px);
  filter:brightness(1.08);
}
.btn-outline{
  background:rgba(255,255,255,.06);
  border-color:var(--border);
  color:var(--text-main);
}
.btn-outline:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}
.btn-gold{
  background:linear-gradient(135deg,#FFC46B,#ffad36);
  color:#1a1205;
  box-shadow:0 0 20px rgba(255,196,107,.4);
}
.btn-gold:hover{
  box-shadow:0 0 32px rgba(255,196,107,.6);
  transform:translateY(-2px);
}
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* 导航 */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:1000;
  pointer-events:none;
}
.nav-inner{
  pointer-events:auto;
  max-width:calc(var(--container) - 40px);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px 12px 8px 24px;
  background:rgba(10,22,40,.72);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:999px;
  box-shadow:0 8px 32px rgba(0,0,0,.35);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#1B3A5C);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#081A2A;
  font-size:16px;
  box-shadow:0 0 12px rgba(56,225,181,.4);
}
.brand-text{
  font-size:17px;
  font-weight:600;
  color:var(--text-main);
  letter-spacing:.5px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  padding:8px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-sub);
  transition:all .3s ease;
  white-space:nowrap;
}
.nav-link:hover{
  color:var(--accent);
  background:rgba(56,225,181,.06);
}
.nav-link.active{
  background:rgba(255,196,107,.18);
  color:var(--gold);
}
.nav-cta{
  height:40px;
  padding:0 24px;
  font-size:14px;
  margin-left:8px;
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--border);
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--text-main);
  border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle.open span:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2){
  opacity:0;
}
.nav-toggle.open span:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

/* Hero */
.page-hero{
  min-height:92vh;
  display:flex;
  align-items:center;
  position:relative;
  padding:130px 0 80px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  z-index:0;
}
.hero-bg::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(10,22,40,.96) 25%,rgba(10,22,40,.82) 60%,rgba(10,22,40,.65) 100%);
}
.hero-content{
  position:relative;
  z-index:1;
  max-width:680px;
  margin-left:calc((100vw - min(1200px,100vw))/2);
  padding:0 24px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,196,107,.15);
  border:1px solid rgba(255,196,107,.35);
  color:var(--gold);
  font-size:13px;
  letter-spacing:1px;
  padding:6px 20px;
  border-radius:999px;
  margin-bottom:24px;
}
.hero-content h1{
  font-size:44px;
  font-weight:600;
  line-height:1.25;
  margin-bottom:20px;
  color:#fff;
}
.hero-content h1 .accent{color:var(--accent)}
.hero-content .lead{
  font-size:17px;
  color:var(--text-sub);
  max-width:560px;
  line-height:1.75;
  margin-bottom:36px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.hero-trust{
  display:flex;
  gap:28px;
  flex-wrap:wrap;
}
.hero-trust span{
  font-size:14px;
  color:var(--text-sub);
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-trust i{color:var(--accent)}

/* 服务卡片 */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.service-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 28px;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.service-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}
.service-card:hover{
  transform:translateY(-4px);
  border-color:rgba(56,225,181,.4);
  box-shadow:0 12px 40px rgba(0,0,0,.45),0 0 20px rgba(56,225,181,.08);
}
.service-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(56,225,181,.18),rgba(27,58,92,.4));
  border:1px solid rgba(56,225,181,.25);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--accent);
  font-size:20px;
  margin-bottom:20px;
}
.service-card h3{
  font-size:18px;
  margin-bottom:10px;
  color:var(--text-main);
}
.service-card p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
}

/* 流程 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  position:relative;
}
.steps::before{
  content:'';
  position:absolute;
  top:38px;
  left:calc(12.5% + 10px);
  right:calc(12.5% + 10px);
  height:2px;
  background:repeating-linear-gradient(90deg,rgba(56,225,181,.4),rgba(56,225,181,.4) 6px,transparent 6px,transparent 12px);
  z-index:0;
}
.step-item{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  text-align:center;
  position:relative;
  z-index:1;
  transition:transform .3s ease,border-color .3s ease;
}
.step-item:hover{
  transform:translateY(-4px);
  border-color:rgba(56,225,181,.35);
}
.step-num{
  width:52px;
  height:52px;
  margin:0 auto 18px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--accent),#1B3A5C);
  color:#081A2A;
  font-size:20px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 0 16px rgba(56,225,181,.35);
}
.step-item h3{
  font-size:16px;
  margin-bottom:8px;
}
.step-item p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.6;
}

/* 场景 */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.scene-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s ease,border-color .3s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(56,225,181,.4);
}
.scene-media{
  position:relative;
  height:200px;
  overflow:hidden;
}
.scene-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.scene-card:hover .scene-media img{transform:scale(1.05)}
.scene-media::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(10,22,40,.55));
}
.scene-tag{
  position:absolute;
  top:16px;
  left:16px;
  z-index:2;
  background:rgba(10,22,40,.75);
  border:1px solid rgba(56,225,181,.4);
  color:var(--accent);
  font-size:12px;
  padding:4px 14px;
  border-radius:999px;
  backdrop-filter:blur(6px);
}
.scene-body{
  padding:24px;
}
.scene-body h3{
  font-size:17px;
  margin-bottom:10px;
}
.scene-body p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}

/* 数据区 */
.stat-band{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:48px 40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.stat-item{
  text-align:center;
}
.stat-num{
  font-size:48px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  text-shadow:0 0 18px rgba(56,225,181,.5);
  font-variant-numeric:tabular-nums;
}
.stat-label{
  font-size:14px;
  color:var(--text-sub);
  margin-top:10px;
}
.stat-item + .stat-item{
  border-left:1px solid var(--border);
}

/* 相关链接 */
.related-panel{
  padding:0 0 96px;
}
.related-box{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 36px;
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
}
.related-box span{
  font-size:15px;
  color:var(--text-sub);
  margin-right:8px;
}
.related-box a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(56,225,181,.08);
  border:1px solid rgba(56,225,181,.25);
  color:var(--accent);
  font-size:14px;
  padding:8px 20px;
  border-radius:999px;
  transition:all .3s ease;
}
.related-box a:hover{
  background:rgba(56,225,181,.15);
  border-color:var(--accent);
  transform:translateY(-2px);
}

/* FAQ */
.faq-wrap{
  max-width:820px;
  margin:0 auto;
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .3s ease;
}
.faq-item.open{
  border-color:rgba(56,225,181,.4);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 28px;
  background:transparent;
  border:none;
  color:var(--text-main);
  font-size:16px;
  font-weight:500;
  text-align:left;
  cursor:pointer;
  transition:color .3s ease;
}
.faq-q:hover{color:var(--accent)}
.faq-q:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:-2px;
  border-radius:var(--radius-sm);
}
.faq-icon{
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:50%;
  background:rgba(56,225,181,.1);
  border:1px solid rgba(56,225,181,.3);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--accent);
  font-size:14px;
  transition:transform .3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:rgba(56,225,181,.2);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 28px 22px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}

/* CTA / 表单 */
.cta-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:24px;
  padding:56px;
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:48px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  position:relative;
  overflow:hidden;
}
.cta-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,225,181,.4),transparent);
}
.cta-left h2{
  font-size:28px;
  margin-bottom:16px;
  line-height:1.35;
}
.cta-left p{
  color:var(--text-sub);
  font-size:15px;
  line-height:1.75;
  margin-bottom:28px;
}
.cta-points{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.cta-points li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:14px;
  color:var(--text-sub);
}
.cta-points i{
  width:24px;
  height:24px;
  border-radius:50%;
  background:rgba(56,225,181,.12);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  flex-shrink:0;
}
.cta-form{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
}
.form-group{
  margin-bottom:18px;
}
.form-group label{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:8px;
}
.form-group input,
.form-group textarea{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:12px 16px;
  color:var(--text-main);
  font-size:14px;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.form-group input::placeholder,
.form-group textarea::placeholder{
  color:var(--disabled);
}
.form-group input:focus,
.form-group textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(56,225,181,.12);
}
.form-group textarea{
  min-height:90px;
  resize:vertical;
}
.cta-form .btn{
  width:100%;
}

/* 页脚 */
.site-footer{
  background:#070F1D;
  padding:64px 0 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{
  margin-bottom:18px;
}
.footer-brand .brand-text{
  font-size:18px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  max-width:320px;
}
.footer-col h4{
  font-size:16px;
  margin-bottom:18px;
  color:var(--text-main);
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul a{
  font-size:14px;
  color:var(--text-sub);
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:color .3s ease,transform .3s ease;
}
.footer-col ul a:hover{
  color:#fff;
  transform:translateX(3px);
}
.footer-col ul a i{
  font-size:10px;
  color:var(--accent);
  margin-top:1px;
}
.footer-contact li{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.6;
}
.footer-contact strong{
  display:block;
  color:var(--text-main);
  font-size:14px;
  margin-bottom:2px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:var(--disabled);
}
.footer-bottom a{
  color:var(--text-sub);
  transition:color .3s ease;
}
.footer-bottom a:hover{color:#fff}

/* 滚动条 */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#245080}

/* 呼吸动画 */
@keyframes pulseGlow{
  0%,100%{box-shadow:0 0 20px rgba(56,225,181,.4)}
  50%{box-shadow:0 0 32px rgba(56,225,181,.7)}
}
.btn-glow{animation:pulseGlow 3s ease-in-out infinite}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .page-hero{padding:110px 0 60px;min-height:auto}
  .hero-content{margin-left:0;padding:0 24px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:24px}
  .steps::before{display:none}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-card{grid-template-columns:1fr;padding:36px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .section-head h2{font-size:24px}
  .hero-content h1{font-size:30px}
  .hero-content .lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-trust{gap:14px}
  .service-grid{grid-template-columns:1fr}
  .service-card{padding:24px 20px}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr;padding:28px 20px;gap:24px}
  .stat-num{font-size:32px}
  .stat-item + .stat-item{border-left:none}
  .cta-card{padding:24px 20px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
  .related-box{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center;padding:20px 16px}

  /* 移动导航 */
  .nav-toggle{
    display:flex;
    margin-left:8px;
  }
  .main-nav{
    position:fixed;
    top:76px;
    left:16px;
    right:16px;
    background:rgba(10,22,40,.96);
    backdrop-filter:blur(24px);
    border:1px solid var(--border);
    border-radius:20px;
    flex-direction:column;
    padding:16px;
    gap:4px;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:all .3s ease;
    pointer-events:none;
  }
  .main-nav.open{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
    pointer-events:auto;
  }
  .main-nav .nav-link{
    width:100%;
    text-align:center;
    padding:12px 16px;
  }
  .nav-cta{
    display:none;
  }
  .nav-mobile-cta{
    display:block;
    width:100%;
    margin-top:12px;
  }
  .nav-mobile-cta .btn{
    width:100%;
  }
}
@media (min-width:768px){
  .nav-mobile-cta{display:none}
}