/* roulang page: index */
:root {
  --primary: #0A4A7A;
  --accent: #00F0BE;
  --accent-deep: #00B8D9;
  --deep-bg: #071B2A;
  --deep-card: #081520;
  --panel: rgba(10, 40, 70, 0.55);
  --panel-border: rgba(120, 200, 255, 0.16);
  --text: #F2F7FB;
  --text-body: #C9D9E6;
  --text-muted: #6F8BA0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 48px rgba(0, 214, 190, 0.12);
  --transition: all 0.25s ease;
  --content-max: 1180px;
  --space-section: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--deep-bg);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

button,
input {
  font-family: inherit;
}

/* 容器 */
.container {
  max-width: var(--content-max);
  padding-left: 20px;
  padding-right: 20px;
}

/* 通用区块 */
.section {
  padding: var(--space-section) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}

.section-sub {
  color: var(--text-muted);
  font-size: 14px;
  margin: 6px 0 0;
}

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

.more-link i {
  margin-left: 6px;
  font-size: 12px;
}

.more-link:hover {
  color: #FFFFFF;
}

/* 按钮 */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 12px 28px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn:focus-visible {
  outline: 3px solid rgba(0, 240, 190, 0.3);
}

.btn-glow {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #062A3A;
  box-shadow: 0 0 22px rgba(0, 230, 190, 0.35);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0, 230, 190, 0.5);
  color: #062A3A;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #E5F1FA;
}

.btn-ghost:hover {
  border-color: rgba(0, 240, 190, 0.55);
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 27, 42, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar {
  padding: 14px 0;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 600;
}

.navbar-brand .brand-text {
  white-space: nowrap;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #062A3A;
  font-size: 16px;
  flex-shrink: 0;
}

.navbar-nav {
  gap: 4px;
}

.nav-link {
  color: var(--text-body) !important;
  font-weight: 500;
  font-size: 15px;
  padding: 8px 14px !important;
  border-radius: 8px;
  white-space: nowrap;
}

.nav-link:hover {
  color: #FFFFFF !important;
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--accent) !important;
  background: rgba(0, 240, 190, 0.08);
}

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

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

.search-box i {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

.search-box input {
  background: rgba(10, 42, 68, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 8px 14px 8px 36px;
  color: var(--text);
  width: 180px;
  transition: all 0.3s;
  outline: none;
  font-size: 14px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  width: 240px;
  border-color: rgba(0, 240, 190, 0.5);
  background: rgba(8, 40, 70, 0.95);
}

.login-link {
  color: var(--text-body);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 10px;
}

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

.site-header .btn-glow {
  padding: 9px 20px;
  font-size: 14px;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  background: radial-gradient(circle at 15% 20%, rgba(0, 240, 190, 0.12), transparent 45%),
              radial-gradient(circle at 85% 60%, rgba(13, 59, 92, 0.7), transparent 55%),
              linear-gradient(180deg, #071B2A 0%, #0D3B5C 100%);
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 60px 0;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 240, 190, 0.1);
  border: 1px solid rgba(0, 240, 190, 0.2);
  border-radius: 30px;
  color: var(--accent);
  font-size: 13px;
  padding: 4px 14px;
  margin-bottom: 22px;
  font-weight: 500;
}

.hero-title {
  font-size: 44px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.hero-title span {
  color: var(--accent);
  text-shadow: 0 0 20px rgba(0, 240, 190, 0.3);
}

.hero-sub {
  color: var(--text-body);
  font-size: 18px;
  margin-bottom: 32px;
  max-width: 420px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat .num {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  font-family: "Barlow", sans-serif;
  line-height: 1.2;
}

.stat .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  margin-left: auto;
  border: 1px solid rgba(120, 200, 255, 0.15);
}

/* ============ 三步上手 ============ */
.steps-section {
  background: var(--deep-card);
}

.step-col {
  position: relative;
}

.step-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  height: 100%;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
}

.step-card:hover {
  border-color: rgba(0, 240, 190, 0.6);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.step-num {
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  color: rgba(0, 240, 190, 0.25);
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 12px;
}

.step-card p {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 0;
}

@media (min-width: 992px) {
  .step-col:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 36px;
    right: -12px;
    width: 24px;
    border-top: 2px dashed rgba(0, 240, 190, 0.3);
    z-index: 1;
  }
}

/* ============ 案例证明 ============ */
.cases-section {
  background: #071B2A;
}

.cases-grid .col-lg-8,
.cases-grid .col-lg-4 {
  margin-bottom: 0;
}

.case-card {
  position: relative;
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #0D3B5C;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.case-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  pointer-events: none;
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-large {
  height: 100%;
  min-height: 340px;
}

.case-small {
  height: 100%;
  min-height: 180px;
}

.case-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 20px;
  z-index: 2;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
}

.case-tag {
  display: inline-block;
  background: rgba(0, 240, 190, 0.12);
  color: var(--accent);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
  font-weight: 500;
}

.case-overlay h3,
.case-overlay h4 {
  color: var(--text);
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 6px;
}

.case-overlay h3 {
  font-size: 20px;
}

.case-overlay h4 {
  font-size: 17px;
}

.case-overlay p {
  color: var(--text-body);
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 0;
}

@media (max-width: 991px) {
  .cases-grid .col-lg-8 {
    margin-bottom: 20px;
  }
}

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

.custom-accordion .accordion-item {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px !important;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.25s;
}

.custom-accordion .accordion-item:has(button[aria-expanded="true"]) {
  border-left: 2px solid var(--accent);
  border-color: rgba(0, 240, 190, 0.3);
}

.custom-accordion .accordion-button {
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  padding: 18px 20px;
  box-shadow: none;
  border-radius: 0;
}

.custom-accordion .accordion-button:not(.collapsed) {
  background: rgba(0, 240, 190, 0.05);
  color: var(--text);
}

.custom-accordion .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300F0BE'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.custom-accordion .accordion-body {
  color: var(--text-body);
  line-height: 1.8;
  font-size: 15px;
  padding: 0 20px 20px;
}

/* ============ CTA ============ */
.cta-section {
  background: linear-gradient(180deg, #071B2A, #051320);
  padding: 80px 0;
}

.cta-card {
  max-width: 720px;
  margin: 0 auto;
  background: rgba(10, 40, 70, 0.55);
  border: 1px solid rgba(0, 240, 190, 0.35);
  border-radius: var(--radius-lg);
  text-align: center;
  padding: 56px 40px;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

.cta-card h2 {
  color: var(--text);
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--text-body);
  margin-bottom: 32px;
  font-size: 16px;
}

.cta-card .btn-glow {
  animation: pulse 3s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 230, 190, 0.35); }
  50% { box-shadow: 0 0 22px 6px rgba(0, 230, 190, 0.18); }
}

/* ============ 最新资讯 ============ */
.news-section {
  background: #071B2A;
}

.news-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}

.news-card:hover {
  border-color: rgba(0, 240, 190, 0.5);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.news-featured {
  display: flex;
  flex-direction: column;
}

.news-thumb {
  height: 240px;
  overflow: hidden;
}

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

.news-body {
  padding: 22px;
}

.badge-cat {
  display: inline-block;
  background: rgba(0, 240, 190, 0.12);
  color: var(--accent);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
  font-weight: 500;
}

.news-body h3 {
  color: var(--text);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-body p {
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body time,
.news-meta time {
  color: var(--text-muted);
  font-size: 12px;
}

.news-list {
  padding: 20px;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.news-list h4 {
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 8px;
}

.news-list p {
  color: var(--text-body);
  font-size: 13px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-muted);
}

.empty-state i {
  font-size: 48px;
  margin-bottom: 14px;
  color: #2A4E66;
}

/* ============ 页脚 ============ */
.site-footer {
  background: #051320;
  padding: 60px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-brand h4,
.footer-links h4,
.footer-meta h4 {
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 18px;
}

.footer-brand p,
.footer-meta p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}

.footer-links a {
  display: block;
  color: var(--text-body);
  text-decoration: none;
  font-size: 14px;
  line-height: 2.4;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 48px;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
}

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

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

/* ============ 响应式 ============ */
@media (max-width: 991px) {
  .navbar-collapse {
    background: #0A2A44;
    border-radius: 0 0 14px 14px;
    padding: 16px;
    margin-top: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .navbar-nav {
    margin-bottom: 16px;
  }

  .nav-actions {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .search-box {
    flex: 1;
    min-width: 150px;
  }

  .search-box input {
    width: 100%;
  }

  .search-box input:focus {
    width: 100%;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 60px 0;
  }

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

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

  .hero-stats {
    gap: 20px;
  }

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

  .stat .label {
    font-size: 12px;
  }

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

  .hero-visual {
    margin-top: 32px;
  }

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

  .step-num {
    font-size: 36px;
  }

  .case-card {
    margin-bottom: 16px;
  }

  .case-large {
    min-height: 240px;
  }

  .case-small {
    min-height: 160px;
  }

  .cta-card {
    padding: 36px 20px;
  }

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

  .news-featured {
    margin-bottom: 16px;
  }

  .news-thumb {
    height: 180px;
  }

  .search-box input {
    display: none;
  }

  .search-box i {
    position: static;
    margin-right: 8px;
  }

  .search-box {
    margin-right: 0;
  }

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

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
  }

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

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .stat .num {
    font-size: 18px;
  }

  .stat .label {
    font-size: 11px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #0A4A7A;
            --primary-dark: #082F4D;
            --primary-light: #0D3B5C;
            --accent: #00F0BE;
            --accent-depth: #00B8D9;
            --deep-bg: #071B2A;
            --card-bg: #081520;
            --light-bg: #F4F8FB;
            --text-light: #F2F7FB;
            --text-body: #C9D9E6;
            --text-dim: #6F8BA0;
            --text-dark: #1B3B4F;
            --border-glass: rgba(120, 200, 255, 0.16);
            --radius-btn: 10px;
            --radius-card: 14px;
            --radius-hero: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 48px rgba(0, 214, 190, 0.12);
            --space-section: 96px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --font-num: "Barlow", "Segoe UI", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            line-height: 1.8;
            background: #fff;
            color: var(--text-dark);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(7, 27, 42, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-header .navbar {
            padding: 14px 0;
            min-height: 70px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light) !important;
            letter-spacing: .3px;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--accent), var(--accent-depth));
            color: #062A3A;
            font-size: 16px;
            box-shadow: 0 0 18px rgba(0, 240, 190, 0.25);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-light);
            white-space: nowrap;
        }
        .navbar .navbar-nav {
            gap: 4px;
        }
        .navbar .nav-link {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 400;
            padding: 8px 16px !important;
            border-radius: 8px;
            transition: color .25s, background .25s;
        }
        .navbar .nav-link:hover,
        .navbar .nav-link:focus {
            color: var(--accent);
            background: rgba(0, 240, 190, 0.06);
            outline: none;
        }
        .navbar .nav-link.active {
            color: var(--accent);
            font-weight: 500;
            background: rgba(0, 240, 190, 0.1);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 8px;
            padding: 6px 12px;
            width: 180px;
            transition: width .3s ease, border-color .3s ease;
        }
        .search-box:focus-within {
            width: 240px;
            border-color: rgba(0, 240, 190, 0.5);
        }
        .search-box i {
            color: var(--text-dim);
            font-size: 13px;
            margin-right: 8px;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 13px;
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-dim);
        }
        .login-link {
            color: var(--text-body);
            font-size: 14px;
            padding: 6px 4px;
            transition: color .25s;
        }
        .login-link:hover {
            color: var(--accent);
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), var(--accent-depth));
            color: #062A3A;
            font-weight: 600;
            font-size: 14px;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            box-shadow: 0 0 18px rgba(0, 230, 190, 0.35);
            transition: all .25s ease;
            cursor: pointer;
        }
        .btn-glow:hover,
        .btn-glow:focus {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 230, 190, 0.5);
            color: #062A3A;
            outline: none;
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 6px 10px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(242,247,251,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--light-bg);
            border-bottom: 1px solid rgba(10, 74, 122, 0.06);
            padding: 16px 0;
        }
        .breadcrumb-wrap .breadcrumb {
            margin: 0;
        }
        .breadcrumb-wrap .breadcrumb-item {
            font-size: 14px;
            color: var(--text-dim);
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--primary);
            transition: color .2s;
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: var(--accent-depth);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--text-dark);
            font-weight: 500;
        }
        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            content: "/";
            color: var(--text-dim);
        }

        /* ===== H1 区 ===== */
        .category-hero {
            background: var(--light-bg);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .category-hero .hero-decoration {
            position: absolute;
            top: 20px;
            right: 30px;
            width: 90px;
            height: 90px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--accent), var(--accent-depth));
            opacity: .15;
            transform: rotate(12deg);
            pointer-events: none;
        }
        .category-hero .hero-decoration::after {
            content: "";
            position: absolute;
            top: 14px;
            left: 14px;
            right: 14px;
            bottom: 14px;
            border: 2px solid var(--primary);
            border-radius: 14px;
        }
        .category-hero h1 {
            font-size: 38px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .category-hero .lead-text {
            font-size: 17px;
            color: var(--text-dim);
            max-width: 720px;
            line-height: 1.8;
        }
        .category-hero .hero-tags {
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--primary);
            background: rgba(10, 74, 122, 0.07);
            border-radius: 6px;
            padding: 6px 14px;
        }
        .hero-tag i {
            color: var(--accent-depth);
            font-size: 13px;
        }

        /* ===== 内容区 ===== */
        .category-content {
            padding: var(--space-section) 0 80px;
            background: #fff;
        }
        .category-content .content-block {
            margin-bottom: 48px;
        }
        .content-block .block-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 500;
            color: var(--text-dark);
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .content-block .block-title .block-index {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            box-shadow: 0 4px 12px rgba(10, 74, 122, 0.25);
        }
        .content-block .block-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            margin-bottom: 20px;
        }
        .content-block .block-desc p {
            margin-bottom: 14px;
        }

        /* ===== 表格 ===== */
        .table-wrap {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            margin-bottom: 0;
        }
        .table-wrap .table {
            margin: 0;
            background: #fff;
            border-collapse: collapse;
        }
        .table-wrap .table thead th {
            background: var(--primary);
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            padding: 14px 18px;
            border: none;
            line-height: 1.5;
        }
        .table-wrap .table tbody td {
            padding: 14px 18px;
            font-size: 15px;
            color: var(--text-dark);
            border-top: none;
            border-bottom: 1px solid rgba(10, 74, 122, 0.06);
            line-height: 1.7;
            vertical-align: middle;
        }
        .table-wrap .table tbody tr:nth-child(even) td {
            background: rgba(10, 74, 122, 0.03);
        }
        .table-wrap .table tbody tr:last-child td {
            border-bottom: none;
        }
        .table-wrap .table tbody tr:hover td {
            background: rgba(0, 240, 190, 0.04);
        }
        .table-wrap .table td .mini-icon {
            color: var(--primary);
            margin-right: 6px;
            font-size: 13px;
        }

        /* ===== 右侧边栏 ===== */
        .side-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--light-bg);
            border: 1px solid rgba(10, 74, 122, 0.08);
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .side-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .side-card .side-img {
            position: relative;
            height: 210px;
            overflow: hidden;
        }
        .side-card .side-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .side-card .side-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.2);
            pointer-events: none;
        }
        .side-card .side-body {
            padding: 20px;
        }
        .side-card .side-body h4 {
            font-size: 17px;
            font-weight: 500;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .side-card .side-body p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .side-card .side-body .side-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--primary);
            margin-top: 12px;
        }
        .side-card .side-body .side-line i {
            color: var(--accent-depth);
        }
        .side-tip-card {
            background: var(--deep-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 24px;
            color: var(--text-body);
        }
        .side-tip-card .tip-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 240, 190, 0.12);
            color: var(--accent);
            font-size: 18px;
            margin-bottom: 14px;
        }
        .side-tip-card h5 {
            color: var(--text-light);
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 8px;
        }
        .side-tip-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-dim);
            margin-bottom: 16px;
        }
        .side-tip-card .tip-link {
            color: var(--accent);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .25s;
        }
        .side-tip-card .tip-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ===== 底部CTA ===== */
        .category-cta {
            background: linear-gradient(180deg, var(--primary-light), var(--deep-bg));
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-cta::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 240, 190, 0.08), transparent 70%);
            top: -200px;
            left: 50%;
            transform: translateX(-50%);
            pointer-events: none;
        }
        .category-cta .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }
        .category-cta h2 {
            color: var(--text-light);
            font-size: 30px;
            font-weight: 500;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .category-cta p {
            color: var(--text-dim);
            font-size: 16px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .category-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-depth));
            color: #062A3A;
            font-weight: 600;
            font-size: 16px;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 36px;
            box-shadow: 0 0 24px rgba(0, 230, 190, 0.4);
            transition: all .3s ease;
            cursor: pointer;
            animation: breathe 3s ease-in-out infinite;
        }
        .category-cta .btn-cta:hover,
        .category-cta .btn-cta:focus {
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(0, 230, 190, 0.55);
            color: #062A3A;
            outline: none;
        }
        @keyframes breathe {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(0, 230, 190, 0.3);
            }
            50% {
                box-shadow: 0 0 32px rgba(0, 230, 190, 0.55);
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #051320;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 64px 0 24px;
        }
        .site-footer .footer-top {
            margin-bottom: 48px;
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .site-footer .footer-brand p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
            margin-bottom: 0;
        }
        .site-footer .footer-links h4 {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            margin-bottom: 16px;
        }
        .site-footer .footer-links a {
            display: block;
            color: var(--text-dim);
            font-size: 14px;
            padding: 4px 0;
            transition: color .25s, padding-left .25s;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .site-footer .footer-meta h4 {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            margin-bottom: 16px;
        }
        .site-footer .footer-meta p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
        }
        .site-footer .footer-bottom p {
            color: var(--text-dim);
            font-size: 13px;
            margin-bottom: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            :root {
                --space-section: 72px;
            }
            .navbar-collapse {
                background: rgba(7, 27, 42, 0.97);
                padding: 18px;
                border-radius: 14px;
                margin-top: 12px;
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-actions {
                flex-wrap: wrap;
                gap: 10px;
                margin-top: 14px;
            }
            .search-box {
                width: 100%;
            }
            .search-box:focus-within {
                width: 100%;
            }
            .category-hero {
                padding: 56px 0 48px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .side-card {
                margin-top: 8px;
            }
            .category-cta h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 767px) {
            :root {
                --space-section: 60px;
            }
            .site-header .navbar {
                padding: 10px 0;
                min-height: 62px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-tag {
                font-size: 13px;
                padding: 5px 10px;
            }
            .category-hero .hero-decoration {
                width: 60px;
                height: 60px;
                top: 12px;
                right: 16px;
            }
            .content-block .block-title {
                font-size: 20px;
            }
            .table-wrap .table thead th,
            .table-wrap .table tbody td {
                padding: 10px 12px;
                font-size: 14px;
            }
            .category-cta {
                padding: 48px 0;
            }
            .category-cta h2 {
                font-size: 24px;
            }
            .category-cta .btn-cta {
                width: 100%;
                justify-content: center;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-text {
                font-size: 16px;
            }
            .category-hero .lead-text {
                font-size: 15px;
            }
            .table-wrap {
                overflow-x: auto;
            }
            .table-wrap .table {
                min-width: 520px;
            }
            .category-cta p {
                font-size: 15px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0A4A7A;
            --accent: #00F0BE;
            --accent-2: #00B8D9;
            --deep: #071B2A;
            --deep-2: #0D3B5C;
            --card-bg: #081520;
            --light-bg: #F4F8FB;
            --text-body: #C9D9E6;
            --text-heading: #F2F7FB;
            --text-muted: #6F8BA0;
            --text-main: #1B3B4F;
            --glass-border: rgba(120, 200, 255, 0.16);
            --btn-radius: 10px;
            --card-radius: 14px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: #fff;
            color: var(--text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: 1180px;
        }

        ::selection {
            background: rgba(0, 240, 190, 0.25);
            color: #0A2A44;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(7, 27, 42, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 10px 0;
        }

        .navbar {
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading) !important;
            letter-spacing: 0.2px;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: linear-gradient(135deg, #00F0BE, #00B8D9);
            color: #062A3A;
            font-size: 15px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 600;
            white-space: nowrap;
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            color: var(--text-body) !important;
            font-size: 15px;
            padding: 8px 14px !important;
            border-radius: 8px;
            transition: color 0.25s ease, background 0.25s ease;
        }

        .nav-link:hover,
        .nav-link:focus {
            color: #ffffff !important;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: var(--accent) !important;
            background: rgba(0, 240, 190, 0.1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 6px 12px;
            width: 180px;
            transition: width 0.3s ease, border-color 0.25s ease;
        }

        .search-box:focus-within {
            width: 240px;
            border-color: rgba(0, 240, 190, 0.45);
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            color: var(--text-heading);
            font-size: 14px;
            outline: none;
            width: 100%;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .login-link {
            color: var(--text-body);
            font-size: 15px;
            padding: 6px 8px;
            white-space: nowrap;
        }

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

        .btn-glow {
            background: linear-gradient(135deg, #00F0BE, #00B8D9);
            color: #062A3A !important;
            font-weight: 600;
            border: none;
            border-radius: var(--btn-radius);
            padding: 10px 22px;
            font-size: 14px;
            box-shadow: 0 0 18px rgba(0, 240, 190, 0.35);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            line-height: 1.4;
            cursor: pointer;
        }

        .btn-glow:hover {
            box-shadow: 0 0 22px rgba(0, 230, 190, 0.45);
            transform: translateY(-2px);
            color: #062A3A !important;
        }

        .btn-glow:focus {
            outline: 2px solid rgba(0, 240, 190, 0.5);
            outline-offset: 2px;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--accent);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(242,247,251,0.9)' stroke-width='2' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-section {
            background: var(--light-bg);
            padding: 18px 0;
            border-bottom: 1px solid rgba(10, 74, 122, 0.08);
        }

        .breadcrumb {
            margin-bottom: 0;
            font-size: 14px;
            flex-wrap: wrap;
        }

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

        .breadcrumb-item a:hover {
            color: var(--accent-2);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            color: #9db4c5;
        }

        .breadcrumb-item.active {
            color: var(--text-main);
            font-weight: 600;
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== 文章主体 ========== */
        .article-wrapper {
            background: #fff;
            padding: 48px 0 80px;
        }

        .article-main {
            background: #fff;
            border: 1px solid #E3EDF5;
            border-radius: var(--card-radius);
            padding: 36px 40px;
            box-shadow: 0 4px 24px rgba(10, 74, 122, 0.06);
            margin-bottom: 28px;
        }

        .article-h1 {
            font-size: 32px;
            font-weight: 600;
            color: #0A2A44;
            line-height: 1.3;
            margin-bottom: 16px;
            word-break: break-word;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 28px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .meta-badge {
            background: rgba(0, 240, 190, 0.12);
            color: #009f75;
            border-radius: 4px;
            padding: 3px 10px;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-cover {
            aspect-ratio: 16/7;
            overflow: hidden;
            border-radius: 14px;
            margin-bottom: 32px;
            position: relative;
            background: #0D3B5C;
        }

        .article-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.2);
            border-radius: 14px;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            word-break: break-word;
            max-width: 720px;
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: #0A2A44;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .article-content h2 {
            font-size: 24px;
        }

        .article-content h3 {
            font-size: 20px;
        }

        .article-content h4 {
            font-size: 17px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #F6FAFD;
            padding: 18px 22px;
            border-radius: 0 10px 10px 0;
            margin: 28px 0;
            color: #2C526B;
        }

        .article-content img {
            border-radius: 14px;
            max-width: 100%;
            margin: 24px 0;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 22px;
            margin-bottom: 24px;
        }

        .article-content ul li {
            position: relative;
            padding-left: 4px;
            margin-bottom: 8px;
        }

        .article-content ul li::marker {
            content: "";
        }

        .article-content ul li {
            list-style: none;
        }

        .article-content ul li::before {
            content: "";
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 1px;
            margin-right: 10px;
            vertical-align: middle;
}

        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content table {
            width: 100%;
            margin: 24px 0;
            border-collapse: collapse;
            border-radius: 10px;
            overflow: hidden;
            font-size: 15px;
        }

        .article-content table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            font-weight: 500;
            text-align: left;
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid #E3EDF5;
        }

        .article-content table tr:nth-child(even) {
            background: #F8FBFD;
        }

        /* ========== 上一篇 / 下一篇 ========== */
        .article-pagination {
            margin-top: 0;
        }

        .page-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            border: 1px solid #E3EDF5;
            border-radius: var(--card-radius);
            padding: 16px 20px;
            color: var(--text-main);
            font-size: 15px;
            transition: all 0.25s ease;
            height: 100%;
        }

        .page-btn:hover {
            border-color: var(--accent);
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 240, 190, 0.1);
        }

        .prev-btn {
            justify-content: flex-start;
        }

        .next-btn {
            justify-content: flex-end;
        }

        /* ========== 侧边栏 ========== */
        .article-sidebar {
            position: sticky;
            top: 120px;
        }

        .side-card {
            background: #fff;
            border: 1px solid #E3EDF5;
            border-radius: var(--card-radius);
            padding: 24px;
            margin-bottom: 20px;
            box-shadow: 0 4px 16px rgba(10, 74, 122, 0.04);
        }

        .side-title {
            font-size: 18px;
            font-weight: 600;
            color: #0A2A44;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .title-bar {
            width: 4px;
            height: 18px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            border-radius: 2px;
            display: inline-block;
            flex-shrink: 0;
        }

        .related-item {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #F0F5FA;
            transition: all 0.25s ease;
        }

        .related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .related-item:hover {
            padding-left: 6px;
        }

        .related-cat {
            display: inline-block;
            background: rgba(0, 240, 190, 0.1);
            color: #009f75;
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 12px;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .related-title {
            display: block;
            font-size: 15px;
            color: #0A2A44;
            font-weight: 500;
            margin-bottom: 4px;
            line-height: 1.5;
            transition: color 0.25s ease;
        }

        .related-title:hover {
            color: var(--primary);
        }

        .related-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== 侧栏 CTA ========== */
        .cta-card {
            background: linear-gradient(145deg, #0D3B5C, #071B2A);
            border: 1px solid rgba(0, 240, 190, 0.25);
            color: #fff;
            text-align: center;
        }

        .cta-card h4 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-heading);
        }

        .cta-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        /* ========== 标签云 ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            display: inline-block;
            background: #F4F8FB;
            border-radius: 6px;
            padding: 5px 12px;
            font-size: 13px;
            color: var(--text-muted);
            border: 1px solid #E3EDF5;
            transition: all 0.25s ease;
        }

        .tag-cloud a:hover {
            border-color: var(--accent);
            color: var(--primary);
            background: rgba(0, 240, 190, 0.06);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #051320;
            color: var(--text-body);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 14px;
            line-height: 1.7;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-heading);
            font-size: 18px;
            font-weight: 600;
        }

        .footer-links h4,
        .footer-meta h4 {
            color: var(--text-heading);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-links a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 4px 0;
            transition: color 0.25s ease;
        }

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

        .footer-meta p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
        }

        /* ========== 内容未找到 ========== */
        .not-found {
            padding: 60px 20px;
        }

        .not-found i {
            color: #B8CBD9;
            margin-bottom: 16px;
        }

        .not-found p {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #0A2A44;
                border-radius: 0 0 14px 14px;
                padding: 16px;
                margin-top: 10px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
            }

            .navbar-nav {
                gap: 4px;
                margin-bottom: 14px !important;
            }

            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                margin-top: 14px;
            }

            .btn-glow {
                width: 100%;
                text-align: center;
            }

            .search-box {
                width: 100%;
            }

            .search-box:focus-within {
                width: 100%;
            }

            .article-sidebar {
                position: static;
                margin-top: 40px;
            }

            .article-main {
                padding: 28px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .article-wrapper {
                padding: 30px 0 50px;
            }

            .article-main {
                padding: 20px 16px;
                border-radius: 10px;
            }

            .article-h1 {
                font-size: 24px;
            }

            .article-cover {
                margin-bottom: 24px;
                aspect-ratio: 16/9;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .article-pagination .page-btn {
                font-size: 14px;
                padding: 14px 16px;
            }

            .site-footer {
                padding-top: 40px;
            }

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

            .breadcrumb-section {
                padding: 14px 0;
            }

            .breadcrumb {
                font-size: 13px;
            }

            .breadcrumb-item.active {
                max-width: 200px;
            }
        }

        @media (max-width: 520px) {
            .article-h1 {
                font-size: 21px;
            }

            .article-content {
                font-size: 15px;
            }

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

            .article-content h3 {
                font-size: 17px;
            }

            .cta-card {
                padding: 20px 16px;
            }

            .related-title {
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0A4A7A;
  --primary-deep: #071B2A;
  --primary-mid: #0D3B5C;
  --accent: #00F0BE;
  --accent-deep: #00B8D9;
  --dark-card: #081520;
  --light-bg: #F4F8FB;
  --text-body: #C9D9E6;
  --text-title: #F2F7FB;
  --text-muted: #6F8BA0;
  --text-dark: #1B3B4F;
  --text-dark-body: #3D5A6E;
  --border-soft: rgba(255,255,255,0.06);
  --radius-btn: 10px;
  --radius-card: 14px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 48px rgba(0,214,190,0.12);
  --transition: 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-num: "Barlow", "PingFang 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(--light-bg);
  color: var(--text-dark-body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  outline: none;
}
.container {
  max-width: 1180px;
  padding-left: 20px;
  padding-right: 20px;
}
.section {
  padding: 96px 0;
}
/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(7, 27, 42, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .navbar {
  padding: 14px 0;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 19px;
  color: var(--text-title) !important;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #062A3A;
  font-size: 15px;
  box-shadow: 0 4px 20px rgba(0, 240, 190, 0.25);
}
.brand-text {
  letter-spacing: 0.01em;
}
.navbar-nav {
  gap: 4px;
}
.navbar-nav .nav-link {
  color: #A7BFD4;
  font-size: 15px;
  font-weight: 400;
  padding: 8px 16px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.navbar-nav .nav-link:hover {
  color: var(--text-title);
  background: rgba(255,255,255,0.05);
}
.navbar-nav .nav-link.active {
  color: var(--accent);
  font-weight: 500;
  background: rgba(0,240,190,0.08);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  position: relative;
  width: 180px;
  transition: width 0.3s ease;
}
.search-box input {
  width: 100%;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--text-title);
  font-size: 13px;
  padding: 8px 12px 8px 36px;
  transition: border-color var(--transition), background var(--transition);
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box input:focus {
  border-color: rgba(0,240,190,0.45);
  background: rgba(255,255,255,0.1);
}
.search-box i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 13px;
  pointer-events: none;
}
.search-box:focus-within {
  width: 240px;
}
.login-link {
  color: #A7BFD4;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}
.login-link:hover {
  color: var(--accent);
}
.btn-glow {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #062A3A;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  border: none;
  box-shadow: 0 4px 24px rgba(0, 230, 190, 0.3);
  transition: all var(--transition);
  white-space: nowrap;
  display: inline-block;
  line-height: 1.5;
}
.btn-glow:hover {
  box-shadow: 0 0 22px rgba(0, 230, 190, 0.45);
  color: #062A3A;
  transform: translateY(-2px);
}
.btn-glow:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(0, 230, 190, 0.25);
}
.btn-glow:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.navbar-toggler {
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 10px;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(0,240,190,0.15);
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #0A2A44;
    border-radius: 14px;
    padding: 16px;
    margin-top: 12px;
    border: 1px solid rgba(255,255,255,0.08);
  }
  .nav-actions {
    flex-wrap: wrap;
    margin-top: 12px;
  }
  .search-box {
    width: 100% !important;
  }
  .search-box input {
    padding: 10px 12px 10px 36px;
  }
  .navbar-nav .nav-link {
    color: #A7BFD4;
    padding: 12px 14px;
    border-radius: 8px;
  }
}
/* ========== Category Hero ========== */
.category-hero {
  position: relative;
  padding: 88px 0 72px;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(0,240,190,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 85% 30%, rgba(10,74,122,0.5) 0%, transparent 55%),
    linear-gradient(135deg, #071B2A 0%, #0D3B5C 60%, #09283F 100%);
  color: var(--text-title);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}
.category-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
}
.category-hero .container {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,240,190,0.12);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 4px;
  border: 1px solid rgba(0,240,190,0.2);
  margin-bottom: 18px;
}
.hero-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0,240,190,0.6);
}
.category-hero h1 {
  font-size: 44px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-title);
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.category-hero .hero-sub {
  color: var(--text-body);
  font-size: 16px;
  max-width: 620px;
  opacity: 0.85;
  margin-bottom: 0;
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-stats .stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stats .stat-num {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-title);
}
.hero-stats .stat-label {
  font-size: 13px;
  color: var(--text-muted);
}
/* ========== Service Overview Section ========== */
.service-overview {
  background: var(--light-bg);
  padding: 96px 0;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.section-label::before {
  content: "";
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  border-radius: 2px;
}
.overview-image {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.overview-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.overview-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.2);
  pointer-events: none;
}
.overview-content h2 {
  font-size: 32px;
  font-weight: 500;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 20px;
}
.overview-content > p {
  color: var(--text-dark-body);
  font-size: 16px;
  margin-bottom: 28px;
}
.capability-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.capability-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid #E3EBF1;
  box-shadow: 0 4px 16px rgba(10,74,122,0.06);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.capability-list li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0,240,190,0.35);
}
.capability-list .check-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 4px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  background: rgba(0,240,190,0.1);
  border-radius: 50%;
  padding: 4px;
  box-sizing: content-box;
}
.capability-list .cap-text {
  display: flex;
  flex-direction: column;
}
.capability-list strong {
  color: var(--text-dark);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}
.capability-list span {
  color: var(--text-dark-body);
  font-size: 14px;
  line-height: 1.6;
}
/* ========== Scenario Section ========== */
.scenario-section {
  background: #fff;
  padding: 96px 0;
  border-top: 1px solid #EDF1F4;
  border-bottom: 1px solid #EDF1F4;
}
.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.4;
}
.section-header p {
  color: var(--text-dark-body);
  font-size: 15px;
}
.scenario-card {
  background: var(--light-bg);
  border: 1px solid #E3EBF1;
  border-radius: var(--radius-card);
  padding: 28px 24px;
  height: 100%;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.scenario-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  opacity: 0;
  transition: opacity var(--transition);
}
.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0,240,190,0.3);
}
.scenario-card:hover::before {
  opacity: 1;
}
.scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0,240,190,0.1);
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 18px;
  transition: background var(--transition), color var(--transition);
}
.scenario-card:hover .scenario-icon {
  background: var(--primary);
  color: var(--accent);
}
.scenario-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-dark-body);
  line-height: 1.7;
  margin-bottom: 0;
}
/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, #071B2A 0%, #0A2A44 50%, #0D3B5C 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,240,190,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: 10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,184,217,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta-box {
  position: relative;
  z-index: 1;
  background: rgba(10, 40, 70, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 240, 190, 0.25);
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.cta-box h2 {
  color: var(--text-title);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 12px;
}
.cta-box p {
  color: var(--text-body);
  font-size: 15px;
  margin-bottom: 28px;
  opacity: 0.85;
}
.cta-box .btn-glow {
  font-size: 15px;
  padding: 14px 36px;
  animation: pulse 3s infinite ease-in-out;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(0,230,190,0.3); }
  50% { box-shadow: 0 0 32px rgba(0,230,190,0.5); }
}
/* ========== Footer ========== */
.site-footer {
  background: #051320;
  padding: 64px 0 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  color: var(--text-body);
}
.site-footer .footer-top {
  padding-bottom: 40px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-title);
  font-size: 19px;
  font-weight: 600;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 300px;
}
.site-footer h4 {
  color: var(--text-title);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  padding: 4px 0;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-meta p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}
/* ========== Responsive ========== */
@media (max-width: 991.98px) {
  .section {
    padding: 72px 0;
  }
  .category-hero {
    padding: 64px 0 56px;
  }
  .category-hero h1 {
    font-size: 34px;
  }
  .overview-image img {
    height: 300px;
  }
  .scenario-section {
    padding: 72px 0;
  }
  .cta-section {
    padding: 60px 0;
  }
  .cta-box {
    padding: 40px 28px;
  }
}
@media (max-width: 767.98px) {
  .section {
    padding: 60px 0;
  }
  .category-hero {
    padding: 48px 0 44px;
    text-align: center;
  }
  .category-hero h1 {
    font-size: 28px;
  }
  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-badge {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-stats {
    justify-content: center;
    gap: 20px;
  }
  .overview-content h2 {
    font-size: 24px;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .cta-box {
    padding: 32px 20px;
  }
  .cta-box h2 {
    font-size: 22px;
  }
  .btn-glow {
    width: 100%;
    text-align: center;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (min-width: 992px) {
  .navbar-collapse {
    justify-content: space-between;
  }
}