/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --brand-primary: #2f6fae;
  --brand-deep: #1e5086;
  --brand-soft: #e8f1f9;
  --accent-cyan: #4fb0c6;
  --bg-page: #f7fafc;
  --bg-card: #ffffff;
  --text-main: #23303e;
  --text-muted: #66768a;
  --text-light: #9aa9b8;
  --border-line: #e5edf4;
  --footer-bg: #16212e;
  --footer-text: #b7c4d4;
  --radius-card: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 24px rgba(38, 80, 120, 0.07);
  --shadow-hover: 0 16px 36px rgba(38, 80, 120, 0.12);
  --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  background: var(--bg-page);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--brand-deep);
}

p {
  margin: 0 0 1rem;
}

.container {
  max-width: 1240px;
}

/* ========== 板块通用 ========== */
.section {
  padding: 80px 0;
}

.section-sm {
  padding: 48px 0;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 36px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--brand-deep);
  background: rgba(47, 111, 174, 0.08);
  padding: 4px 12px;
  border-radius: 40px;
  margin-bottom: 14px;
}

/* 区块头部 */
.section-head {
  margin-bottom: 42px;
}

.section-head.text-center {
  text-align: center;
}

.section-head.text-center .section-desc {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.site-header.scrolled {
  border-color: var(--border-line);
  box-shadow: 0 8px 30px rgba(38, 80, 120, 0.07);
}

.navbar {
  padding: 10px 0;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  padding: 4px 0;
}

.navbar-brand i {
  font-size: 22px;
  color: var(--brand-primary);
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, #eef6fd, #dcebf8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.navbar-brand:hover {
  color: var(--brand-deep);
}

.navbar .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 10px 18px !important;
  position: relative;
}

.navbar .nav-link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 5px;
  height: 2px;
  background: var(--brand-primary);
  border-radius: 4px;
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.navbar .nav-link:hover {
  color: var(--brand-primary);
}

.navbar .nav-link.active {
  color: var(--brand-primary);
  font-weight: 600;
}

.navbar .nav-link.active::after {
  opacity: 1;
  transform: scaleX(0.85);
}

.header-btn {
  min-width: 124px;
  text-align: center;
  font-weight: 500;
}

.navbar-toggler {
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 4px rgba(47, 111, 174, 0.12);
}

/* ========== 按钮 ========== */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all 0.2s ease;
  padding: 10px 22px;
}

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

.btn-primary:hover,
.btn-primary:active {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(47, 111, 174, 0.2);
}

.btn-primary:focus {
  outline: 3px solid rgba(47, 111, 174, 0.2);
  box-shadow: none;
}

.btn-outline-primary {
  border-color: #c7d9e8;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.6);
}

.btn-outline-primary:hover {
  background: var(--brand-soft);
  border-color: var(--brand-primary);
  color: var(--brand-deep);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 12px 30px;
  border-radius: 12px;
  font-size: 16px;
}

/* ========== Hero ========== */
.hero-section {
  position: relative;
  padding: 86px 0 78px;
  background:
    linear-gradient(120deg, rgba(246, 251, 255, 0.97) 0%, rgba(231, 243, 252, 0.92) 55%, rgba(219, 240, 250, 0.86) 100%),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border-line);
  overflow: hidden;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(47, 111, 174, 0.12);
  border-radius: 40px;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--brand-deep);
  font-weight: 600;
}

.hero-tag i {
  color: var(--accent-cyan);
}

.hero-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--text-main);
  margin: 20px 0 16px;
  letter-spacing: 0.5px;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-note {
  margin-top: 26px;
  color: var(--text-light);
  font-size: 14px;
}

.hero-note i {
  color: var(--accent-cyan);
  margin-right: 6px;
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 22px;
  padding: 14px;
  box-shadow: var(--shadow-hover);
  backdrop-filter: blur(6px);
}

.hero-card img {
  border-radius: 14px;
  width: 100%;
  object-fit: cover;
}

.hero-float-badge {
  position: absolute;
  left: -20px;
  bottom: 26px;
  background: #fff;
  border-radius: 16px;
  padding: 12px 18px;
  box-shadow: var(--shadow-hover);
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 260px;
}

.hero-float-badge i {
  font-size: 22px;
  color: var(--accent-cyan);
  background: #e6f7fa;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-float-badge strong {
  display: block;
  font-size: 15px;
  line-height: 1.3;
}

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

/* ========== 信任标识条 ========== */
.trust-strip {
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--border-line);
  padding: 20px 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  padding: 6px 8px;
}

.trust-item i {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--brand-primary);
  background: var(--brand-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

/* ========== 卡片入口网格 ========== */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(47, 111, 174, 0.25);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: linear-gradient(135deg, #f0f7fd, #e1eefb);
  color: var(--brand-primary);
  font-size: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.service-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 18px;
  min-height: 78px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
}

.card-link i {
  transition: transform 0.2s ease;
}

.card-link:hover {
  color: var(--brand-deep);
}

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

/* ========== 智能指南展示区 ========== */
.guide-zone {
  background: #f1f7fc;
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  padding: 76px 0;
}

.guide-image-wrap {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.guide-cover-badge {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: rgba(22, 33, 46, 0.8);
  backdrop-filter: blur(8px);
  color: #fff;
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 14px;
}

.guide-cover-badge i {
  color: #8fd0e6;
  margin-right: 6px;
}

.step-list {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  counter-reset: step;
}

.step-list li {
  position: relative;
  padding-left: 50px;
  padding-bottom: 22px;
  border-left: 2px dashed #d5e4ef;
  margin-left: 16px;
}

.step-list li:last-child {
  border-left-color: transparent;
  padding-bottom: 4px;
}

.step-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -17px;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px rgba(47, 111, 174, 0.12);
}

.step-list h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 2px;
}

.step-list p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== 反馈轮播 ========== */
.review-zone {
  background: #fff;
}

.review-card {
  background: var(--bg-page);
  border: 1px solid var(--border-line);
  border-radius: 20px;
  padding: 40px 34px;
  position: relative;
  text-align: center;
  margin: 10px auto;
  max-width: 860px;
}

.review-mark {
  font-size: 44px;
  color: #cfe0ed;
  display: block;
  margin-bottom: 12px;
}

.star-line {
  color: #f5b747;
  margin-bottom: 18px;
  letter-spacing: 3px;
}

.review-card blockquote {
  border: 0;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-main);
  padding: 0;
  margin: 0 auto 18px;
  max-width: 650px;
}

.review-card figcaption {
  color: var(--text-muted);
  font-size: 14px;
}

.review-card figcaption i {
  color: var(--accent-cyan);
  margin-right: 6px;
}

.review-control {
  margin-top: 24px;
}

.review-control .carousel-indicators {
  position: static;
  margin: 0;
  justify-content: center;
}

.review-control .carousel-indicators button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c9d9e6;
  border: 0;
  opacity: 1;
}

.review-control .carousel-indicators button.active {
  background: var(--brand-primary);
  width: 22px;
  border-radius: 10px;
}

/* ========== 资讯区域 ========== */
.news-zone {
  background: var(--bg-page);
}

.news-head-actions {
  text-align: right;
  margin-bottom: 24px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-card);
  padding: 22px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 40px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(79, 176, 198, 0.12);
  color: #2a8298;
}

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

.muted-time i {
  margin-right: 4px;
}

.news-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 8px;
}

.news-card h3 a {
  color: var(--text-main);
}

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

.news-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-list {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-top: 24px;
}

.news-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  border-bottom: 1px solid #eef4f8;
  transition: background 0.2s ease;
}

.news-list-item:last-child {
  border-bottom: 0;
}

.news-list-item:hover {
  background: var(--bg-page);
}

.news-list-item .tag {
  min-width: 70px;
  text-align: center;
  flex-shrink: 0;
}

.news-list-item .news-list-title {
  flex: 1;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-list-item:hover .news-list-title {
  color: var(--brand-primary);
}

.news-list-item .news-list-date {
  color: var(--text-light);
  font-size: 13px;
  white-space: nowrap;
}

.news-list-item i {
  color: #b9cad8;
  font-size: 13px;
}

.empty-block {
  border: 2px dashed #d8e6f0;
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.65);
  text-align: center;
  padding: 42px 20px;
  color: var(--text-muted);
}

/* ========== 保障条 ========== */
.security-line {
  background: #fff;
  border-top: 1px solid var(--border-line);
  padding: 50px 0;
}

.security-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 6px 8px;
}

.security-item i {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: linear-gradient(135deg, #e6f5fa, #dcecf8);
  color: var(--brand-deep);
  font-size: 19px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.security-item h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.security-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

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

.faq-accordion .accordion-item {
  border: 1px solid var(--border-line);
  border-radius: 14px !important;
  margin-bottom: 14px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 14px rgba(38, 80, 120, 0.04);
}

.faq-accordion .accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  padding: 18px 22px;
  background: #fff;
  border-radius: 14px !important;
  line-height: 1.5;
}

.faq-accordion .accordion-button:not(.collapsed) {
  background: #f5faff;
  color: var(--brand-deep);
  box-shadow: none;
}

.faq-accordion .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(47, 111, 174, 0.12);
}

.faq-accordion .accordion-button::after {
  background-size: 18px;
}

.faq-accordion .accordion-body {
  padding: 4px 22px 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.9;
}

/* ========== CTA ========== */
.cta-zone {
  background:
    linear-gradient(100deg, rgba(247, 250, 252, 0.96), rgba(228, 240, 249, 0.92)),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 72px 0;
}

.cta-block {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 22px;
  padding: 40px 50px;
  box-shadow: var(--shadow-card);
}

.cta-block h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.cta-block p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 22px;
}

.cta-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 60px 0 24px;
  margin-top: 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand i {
  color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.08);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #94a6b8;
  margin-bottom: 18px;
}

.footer-brand-icons {
  display: flex;
  gap: 12px;
}

.footer-brand-icons span {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #b7c8da;
  font-size: 17px;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 3px;
}

.footer-link {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-link a {
  color: #9fb0c2;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-link a i {
  font-size: 11px;
  color: #5d7c98;
}

.footer-link a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #9fb0c2;
  margin-bottom: 14px;
}

.footer-contact i {
  width: 28px;
  color: var(--accent-cyan);
  font-size: 15px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 40px;
  padding-top: 22px;
  color: #7e92a5;
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}

.footer-bottom a {
  color: #9fb0c2;
}

.footer-bottom a:hover {
  color: #fff;
}

/* ========== 响应式 ========== */
@media (max-width: 991.98px) {
  .section {
    padding: 60px 0;
  }

  .navbar-collapse {
    background: #fff;
    border-radius: 16px;
    padding: 14px 10px;
    margin-top: 10px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-line);
  }

  .navbar .nav-link {
    border-radius: 8px;
    padding: 12px 16px !important;
  }

  .navbar .nav-link::after {
    display: none;
  }

  .navbar .nav-link.active {
    background: var(--brand-soft);
  }

  .header-btn {
    margin: 12px 0 4px;
    width: 100%;
  }

  .hero-title {
    font-size: 30px;
  }

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

  .hero-float-badge {
    left: 0;
  }

  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .guide-zone {
    padding: 52px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .news-zone .section-head {
    margin-bottom: 26px;
  }

  .news-head-actions {
    text-align: left;
    margin-bottom: 14px;
  }

  .cta-block {
    padding: 34px 28px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 46px 0;
  }

  .hero-section {
    padding: 56px 0;
  }

  .hero-title {
    font-size: 26px;
    line-height: 1.45;
  }

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

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

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

  .trust-item {
    font-size: 14px;
    gap: 8px;
    padding: 0;
  }

  .trust-item i {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .service-icon {
    width: 46px;
    height: 46px;
    font-size: 19px;
  }

  .step-list li {
    padding-left: 42px;
    margin-left: 12px;
  }

  .step-list li::before {
    left: -15px;
    width: 30px;
    height: 30px;
    font-size: 13px;
  }

  .review-card {
    padding: 28px 20px;
  }

  .review-card blockquote {
    font-size: 15px;
  }

  .news-list-item {
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px 16px;
  }

  .news-list-title {
    width: 100%;
    order: 3;
  }

  .news-list-item .news-list-date {
    margin-left: auto;
  }

  .footer-title {
    margin-top: 16px;
  }

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

@media (max-width: 479px) {
  .navbar-brand {
    font-size: 16px;
    gap: 8px;
  }

  .navbar-brand i {
    width: 30px;
    height: 30px;
    font-size: 15px;
  }

  .section-title {
    font-size: 22px;
  }

  .hero-desc {
    font-size: 14px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
  }
}

/* roulang page: article */
:root {
      --brand: #2F6FAE;
      --brand-dark: #1E5086;
      --brand-accent: #4FB0C6;
      --bg-soft: #F7FAFC;
      --bg-blue: #EFF5FB;
      --ink: #23303E;
      --ink-2: #66768A;
      --ink-3: #9AA9B8;
      --line: #E5EDF4;
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow-sm: 0 8px 24px rgba(38, 80, 120, .07);
      --shadow-md: 0 16px 36px rgba(38, 80, 120, .11);
      --shadow-lg: 0 24px 52px rgba(38, 80, 120, .14);
      --transition: all .2s ease-in-out;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
      background: #fff;
      color: var(--ink);
      font-size: 16px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    body.article-body {
      background: #fff;
    }

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

    a:hover {
      color: var(--brand);
    }

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

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

    .container {
      max-width: 1240px;
      padding-left: 20px;
      padding-right: 20px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 10px 26px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      transition: var(--transition);
      border: 1px solid transparent;
    }

    .btn-primary {
      background: var(--brand);
      border-color: var(--brand);
      color: #fff;
      box-shadow: 0 8px 20px rgba(47, 111, 174, .18);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--brand-dark);
      border-color: var(--brand-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 12px 26px rgba(30, 80, 134, .24);
    }

    .btn-outline-primary {
      background: #fff;
      border-color: #C4D7E8;
      color: var(--brand-dark);
    }

    .btn-outline-primary:hover,
    .btn-outline-primary:focus {
      border-color: var(--brand);
      background: #EAF3FB;
      color: var(--brand-dark);
      transform: translateY(-2px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      background: rgba(255, 255, 255, .96);
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid transparent;
      transition: var(--transition);
    }

    .site-header.scrolled {
      border-bottom-color: var(--line);
      box-shadow: 0 8px 24px rgba(38, 80, 120, .08);
    }

    .site-header .navbar {
      min-height: 68px;
      padding: 0;
    }

    .site-header .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 21px;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: .2px;
    }

    .site-header .navbar-brand i {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--brand), var(--brand-accent));
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }

    .site-header .navbar-brand span {
      white-space: nowrap;
    }

    .site-header .navbar-nav {
      gap: 4px;
    }

    .site-header .nav-link {
      color: var(--ink-2);
      font-weight: 500;
      font-size: 15px;
      line-height: 1;
      border-radius: 32px;
      padding: 11px 18px !important;
      transition: var(--transition);
      position: relative;
    }

    .site-header .nav-link:hover {
      color: var(--brand-dark);
      background: var(--bg-soft);
    }

    .site-header .nav-link.active,
    .site-header .nav-link[aria-current="page"] {
      color: var(--brand);
      font-weight: 600;
      background: #EAF3FB;
    }

    .site-header .nav-link.active::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 5px;
      height: 2px;
      border-radius: 2px;
      background: var(--brand);
    }

    .header-btn {
      min-height: 42px;
      padding: 8px 22px;
      border-radius: 30px;
    }

    .site-header .navbar-toggler {
      border: 0;
      box-shadow: none !important;
      padding: 8px 12px;
      color: var(--brand);
    }

    /* 文章页通用区块间距 */
    .article-main {
      padding: 40px 0 0;
    }

    .article-shell {
      background:
        linear-gradient(180deg, rgba(247, 250, 252, .8), #fff 400px);
      padding: 36px 0 90px;
    }

    .article-holder {
      max-width: 800px;
      margin: 0 auto;
    }

    .article-topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 22px;
    }

    .article-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #EDF4FB;
      border: 1px solid #D8E7F4;
      color: var(--brand);
      border-radius: 40px;
      padding: 5px 14px;
      font-size: 13px;
      font-weight: 600;
      white-space: nowrap;
    }

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

    .article-breadcrumb .breadcrumb-item a {
      color: var(--ink-2);
    }

    .article-breadcrumb .breadcrumb-item a:hover {
      color: var(--brand);
    }

    .article-breadcrumb .breadcrumb-item.active {
      color: var(--ink-2);
      font-weight: 500;
    }

    .article-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
      content: "\f105";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      color: #B9C7D5;
    }

    .article-title {
      font-size: clamp(28px, 4vw, 38px);
      line-height: 1.35;
      font-weight: 700;
      color: var(--ink);
      margin: 0 0 22px;
      letter-spacing: .4px;
    }

    .article-title:focus {
      outline: none;
    }

    .article-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px 26px;
      padding-bottom: 30px;
      margin-bottom: 30px;
      border-bottom: 1px solid var(--line);
      color: var(--ink-2);
      font-size: 14px;
    }

    .article-meta span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .article-meta i {
      color: var(--brand-accent);
      width: 16px;
      text-align: center;
    }

    .article-content {
      font-size: 16.5px;
      line-height: 2;
      color: #2A3B4E;
      letter-spacing: .1px;
    }

    .article-content > *:first-child {
      margin-top: 0;
    }

    .article-content p {
      margin: 0 0 22px;
    }

    .article-content h2 {
      font-size: 25px;
      font-weight: 700;
      line-height: 1.5;
      margin: 42px 0 18px;
      color: var(--ink);
    }

    .article-content h3 {
      font-size: 20px;
      font-weight: 700;
      margin: 34px 0 14px;
      color: var(--ink);
    }

    .article-content h4 {
      font-size: 17px;
      font-weight: 700;
      margin: 26px 0 12px;
      color: var(--ink);
    }

    .article-content ul,
    .article-content ol {
      margin: 0 0 24px;
      padding-left: 1.5rem;
    }

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

    .article-content blockquote {
      background: var(--bg-soft);
      border-left: 4px solid var(--brand);
      padding: 18px 24px;
      border-radius: 0 14px 14px 0;
      margin: 32px 0;
      color: var(--ink-2);
      font-size: 16px;
    }

    .article-content img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      margin: 28px auto;
    }

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 28px 0;
      font-size: 15px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

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

    .article-content th {
      background: var(--bg-soft);
      font-weight: 700;
    }

    .article-content a {
      color: var(--brand-dark);
      border-bottom: 1px solid rgba(47, 111, 174, .35);
    }

    .article-content a:hover {
      border-bottom-color: var(--brand);
      color: var(--brand);
    }

    .article-content code {
      background: var(--bg-soft);
      border-radius: 6px;
      padding: 2px 8px;
      font-size: 14px;
      color: var(--brand-dark);
    }

    .article-empty {
      border: 1px dashed #C8D8E7;
      background: #F7FAFC;
      border-radius: var(--radius-lg);
      text-align: center;
      padding: 80px 24px;
    }

    .article-empty i {
      display: inline-block;
      font-size: 44px;
      color: var(--ink-3);
      margin-bottom: 18px;
    }

    .article-empty h2 {
      font-size: 24px;
      color: var(--ink);
      margin-bottom: 10px;
    }

    .article-empty p {
      color: var(--ink-2);
    }

    .section-block {
      padding: 80px 0;
    }

    .section-title-wrap {
      margin-bottom: 42px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #EAF3FB;
      color: var(--brand);
      font-size: 13px;
      font-weight: 600;
      border-radius: 40px;
      padding: 6px 16px;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: clamp(24px, 3vw, 30px);
      font-weight: 700;
      line-height: 1.5;
      color: var(--ink);
      margin: 0;
    }

    .section-lead {
      color: var(--ink-2);
      font-size: 15px;
      max-width: 560px;
      margin-top: 12px;
    }

    /* 相关阅读卡片 */
    .related-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
    }

    .related-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #C7D9E8;
    }

    .related-card .card-img-wrap {
      height: 190px;
      overflow: hidden;
      background: var(--bg-blue);
      position: relative;
    }

    .related-card .card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }

    .related-card:hover .card-img-wrap img {
      transform: scale(1.04);
    }

    .related-card-body {
      padding: 22px 22px 20px;
    }

    .related-cat {
      display: inline-flex;
      align-items: center;
      height: 24px;
      background: #EAF3FB;
      color: var(--brand);
      font-size: 12px;
      font-weight: 600;
      padding: 0 10px;
      border-radius: 30px;
      margin-bottom: 12px;
    }

    .related-card h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.55;
      color: var(--ink);
      margin: 0 0 8px;
    }

    .related-card h3 a {
      color: var(--ink);
    }

    .related-card h3 a:hover {
      color: var(--brand);
    }

    .related-card p {
      color: var(--ink-2);
      font-size: 14px;
      line-height: 1.8;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin: 0;
    }

    .related-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-top: 14px;
      margin-top: 14px;
      border-top: 1px solid var(--line);
      color: var(--ink-3);
      font-size: 13px;
    }

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

    .faq-accordion .accordion-item {
      border: 0;
      background: transparent;
      border-bottom: 1px solid var(--line);
    }

    .faq-accordion .accordion-item:last-child {
      border-bottom: 0;
    }

    .faq-accordion .accordion-button {
      background: transparent;
      border: 0;
      box-shadow: none;
      color: var(--ink);
      font-size: 16.5px;
      font-weight: 600;
      padding: 20px 44px 20px 0;
      line-height: 1.6;
      position: relative;
    }

    .faq-accordion .accordion-button::after {
      background: unset;
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--brand);
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background-color: #EAF3FB;
      transition: transform .3s ease;
      position: absolute;
      right: 0;
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(180deg);
      color: #fff;
      background-color: var(--brand);
    }

    .faq-accordion .accordion-button:hover {
      color: var(--brand);
    }

    .faq-accordion .accordion-body {
      padding: 0 44px 22px 0;
      color: var(--ink-2);
      font-size: 15px;
      line-height: 1.9;
    }

    /* CTA 条 */
    .cta-band {
      padding: 80px 0;
      background: linear-gradient(120deg, rgba(47, 111, 174, .04), rgba(79, 176, 198, .06)), var(--bg-soft);
    }

    .cta-inner {
      background: linear-gradient(105deg, #F7FAFC 60%, #E6F1FA 100%);
      border: 1px solid var(--line);
      border-radius: 24px;
      padding: 46px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
      box-shadow: var(--shadow-sm);
    }

    .cta-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--brand), var(--brand-accent));
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 14px;
    }

    .cta-copy h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--ink);
      margin: 0 0 6px;
    }

    .cta-copy p {
      color: var(--ink-2);
      font-size: 15px;
      max-width: 640px;
      margin: 0;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    /* 页脚 */
    .site-footer {
      background: #16212E;
      color: #AFC0D0;
      padding: 72px 0 0;
      font-size: 14px;
    }

    .site-footer .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .site-footer .footer-brand i {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--brand), var(--brand-accent));
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: #fff;
    }

    .site-footer p.footer-desc {
      line-height: 1.9;
      max-width: 460px;
      margin: 0 0 18px;
      color: #AFC0D0;
    }

    .footer-brand-icons {
      display: flex;
      gap: 10px;
    }

    .footer-brand-icons span {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      border: 1px solid #3C4F62;
      background: rgba(255, 255, 255, .04);
      color: #C9D5E0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
    }

    .site-footer h4.footer-title {
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      margin: 8px 0 18px;
    }

    .site-footer .footer-link {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .site-footer .footer-link li {
      margin-bottom: 10px;
    }

    .site-footer .footer-link a {
      color: #AFC0D0;
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .site-footer .footer-link a:hover {
      color: #fff;
    }

    .site-footer .footer-link i {
      color: #4FB0C6;
      font-size: 11px;
      width: 14px;
    }

    .site-footer .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #AFC0D0;
      line-height: 1.7;
    }

    .site-footer .footer-contact i {
      margin-top: 5px;
      color: #4FB0C6;
      font-size: 14px;
      width: 18px;
      flex-shrink: 0;
    }

    .site-footer .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .08);
      padding: 20px 0;
      margin-top: 46px;
      color: #8799A8;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px 16px;
    }

    .site-footer .footer-bottom i {
      color: #4FB0C6;
    }

    /* 响应式 */
    @media (max-width: 991.98px) {
      .site-header .navbar-collapse {
        box-shadow: 0 18px 30px rgba(38, 80, 120, .08);
        border-radius: 0 0 16px 16px;
        padding: 16px 0 20px;
        background: #fff;
      }

      .site-header .container {
        max-width: 100%;
      }

      .site-header .nav-link {
        display: inline-block;
        padding: 12px 16px !important;
      }

      .site-header .header-btn {
        margin-top: 10px;
        width: 100%;
      }

      .section-block {
        padding: 60px 0;
      }

      .article-shell {
        padding-top: 28px;
      }
    }

    @media (max-width: 767.98px) {
      .site-header .navbar-brand span {
        font-size: 17px;
      }

      .article-title {
        font-size: 26px;
      }

      .article-meta {
        gap: 8px 14px;
        font-size: 13px;
        padding-bottom: 20px;
        margin-bottom: 24px;
      }

      .article-content {
        font-size: 16px;
        line-height: 1.9;
      }

      .article-content h2 {
        font-size: 22px;
      }

      .article-content h3 {
        font-size: 19px;
      }

      .cta-inner {
        padding: 30px 22px;
        flex-direction: column;
        align-items: flex-start;
      }

      .cta-copy h3 {
        font-size: 20px;
      }

      .cta-actions {
        width: 100%;
      }

      .cta-actions .btn {
        flex: 1;
        min-width: 120px;
      }

      .section-block {
        padding: 52px 0;
      }

      .related-card .card-img-wrap {
        height: 200px;
      }

      .faq-accordion .accordion-button {
        font-size: 15px;
      }

      .faq-accordion .accordion-body {
        font-size: 14.5px;
      }

      .site-footer {
        padding-top: 52px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .site-header .navbar-brand {
        font-size: 17px;
      }

      .site-header .navbar-brand i {
        width: 34px;
        height: 34px;
        font-size: 15px;
      }

      .article-topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }

      .article-title {
        font-size: 23px;
      }

      .article-meta {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
      }

      .article-content ul,
      .article-content ol {
        padding-left: 1.2rem;
      }

      .cta-actions {
        flex-direction: column;
      }

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

/* roulang page: category2 */
:root {
            --primary: #2F6FAE;
            --primary-dark: #1E5086;
            --primary-light: #4FB0C6;
            --bg-light: #F7FAFC;
            --bg-white: #ffffff;
            --bg-blue-gradient: linear-gradient(135deg, #EAF1F8 0%, #F7FAFC 50%, #E8F0F7 100%);
            --text-main: #23303E;
            --text-muted: #66768A;
            --text-light: #9AA9B8;
            --border: #E5EDF4;
            --shadow-sm: 0 4px 14px rgba(38, 80, 120, 0.06);
            --shadow-md: 0 8px 24px rgba(38, 80, 120, 0.08);
            --shadow-lg: 0 16px 40px rgba(38, 80, 120, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-pill: 40px;
            --header-height: 68px;
            --font-main: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", Inter, Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            transition: color 0.3s;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== NAVBAR ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(229, 237, 244, 0.6);
            transition: box-shadow 0.3s;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 20px rgba(38, 80, 120, 0.08);
        }

        .navbar {
            padding-top: 0;
            padding-bottom: 0;
            min-height: var(--header-height);
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }

        .navbar-brand i {
            font-size: 24px;
            color: var(--primary);
        }

        .navbar-brand span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .navbar-nav {
            gap: 6px;
            align-items: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            position: relative;
            display: inline-block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main) !important;
            padding: 10px 16px !important;
            transition: color 0.3s;
        }

        .nav-link:hover,
        .nav-link:focus {
            color: var(--primary) !important;
        }

        .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .header-btn {
            margin-left: 10px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 12px rgba(47, 111, 174, 0.3);
        }

        .navbar-toggler {
            border: none;
            padding: 8px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(47, 111, 174, 0.25);
            border-radius: 8px;
        }

        .navbar-toggler-icon {
            width: 20px;
            height: 20px;
        }

        /* ===== BTN ===== */
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            border-radius: var(--radius-pill);
            font-weight: 600;
            transition: all 0.3s;
            padding: 10px 22px;
        }

        .btn-primary:hover,
        .btn-primary:active {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(38, 80, 120, 0.2);
            color: #fff;
        }

        .btn-primary:focus {
            outline: 2px solid rgba(47, 111, 174, 0.4);
            box-shadow: none;
        }

        .btn-outline-primary {
            color: var(--primary);
            border-color: var(--primary);
            border-radius: var(--radius-pill);
            font-weight: 600;
            background: #fff;
            transition: all 0.3s;
            padding: 10px 22px;
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:active {
            background: rgba(47, 111, 174, 0.06);
            box-shadow: 0 8px 20px rgba(38, 80, 120, 0.1);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline-primary:focus {
            outline: 2px solid rgba(47, 111, 174, 0.35);
            box-shadow: none;
        }

        .btn-light-soft {
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.85);
            color: var(--primary-dark);
            border-radius: var(--radius-pill);
            font-weight: 600;
            padding: 10px 24px;
            transition: all 0.3s;
        }

        .btn-light-soft:hover {
            background: #fff;
            border-color: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 255, 255, 0.18);
        }

        /* ===== PAGE HEADER (Category Banner) ===== */
        .page-header {
            position: relative;
            background: #E8F0F7 url('/assets/images/backpic/back-1.webp') no-repeat center/cover;
            padding: 80px 0 72px;
            border-bottom: 1px solid rgba(229, 237, 244, 0.6);
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.86) 50%, rgba(238, 246, 252, 0.9) 100%);
            backdrop-filter: blur(1px);
        }

        .page-header .container {
            position: relative;
            z-index: 1;
        }

        .page-header .section-eyebrow {
            display: inline-block;
            background: rgba(47, 111, 174, 0.15);
            color: var(--primary-dark);
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }

        .page-header h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.32;
            color: var(--text-main);
            letter-spacing: -0.4px;
            max-width: 620px;
            margin-bottom: 20px;
        }

        .page-header .lead {
            color: var(--text-muted);
            max-width: 520px;
            font-size: 16px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .page-header-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .page-header-actions .btn {
            min-width: 140px;
            padding: 12px 26px;
        }

        /* ===== SECTION LAYOUT ===== */
        .section-page-block {
            padding: 88px 0;
        }

        .section-page-block .section-heading {
            text-align: center;
            margin-bottom: 48px;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-page-block .section-heading p.eyebrow {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.4px;
            margin-bottom: 8px;
        }

        .section-page-block .section-heading h2 {
            font-size: 32px;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.2px;
        }

        .section-page-block .section-heading p.section-summary {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* === Feature Cards === */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(229, 237, 244, 0.5);
            transition: all 0.4s;
            height: 100%;
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(47, 111, 174, 0.16);
        }

        .feature-card .f-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            background: rgba(47, 111, 174, 0.08);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.75;
        }

        .feature-card hr {
            border-color: #eef3f7;
            margin: 14px 0;
            opacity: 1;
        }

        .feature-card .timestamp {
            font-size: 12px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .feature-card .route {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap 0.3s;
        }
        .feature-card .route:hover{ gap: 8px; color: var(--primary-dark);}

        /* === Highlight Video-ish / Split block === */
        .split-block {
            background: #fff;
            border: 1px solid rgba(229, 237, 244, 0.6);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .split-block .split-content {
            padding: 40px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .split-block .split-content h3{
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            }
        .split-block .split-content p{
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .split-block .split-content .arrow-btn i{
            transition: transform .3s;
        }
        .split-block .split-content .arrow-btn:hover i{
            transform: translateX(4px);
        }
        .split-block .split-media{
            position:relative;
            min-height: 260px;
            overflow:hidden;
        }
        .split-block .split-media img{
            width: 100%;
            height: 100%;
            object-fit: cover;
            position:absolute;
            inset:0;
        }

        /* timeline / workflow */
        .steps-section {
            background: var(--bg-light) url('/assets/images/backpic/back-3.png') no-repeat right bottom / auto 60%;
            padding: 92px 0;
            border-top: 1px solid rgba(229,237,244,.5);
        }
        .step-item {
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 28px 24px;
            transition: transform .35s, box-shadow .35s;
            height: 100%;
        }
        .step-item:hover {
            transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        }
        .step-number {
            font-size: 12px;
            font-weight: 700;
            background: var(--primary);
            color:#fff;
            width: 32px;
            height:32px;
            border-radius:50%;
            text-align: center;
            line-height:32px;
            margin-bottom: 16px;
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin: 12px 0 8px;
            color: var(--text-main);
        }
        .step-item p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-muted);
        }

        .tag-lv {
            display:inline-block;
            background: rgba(47,111,174,.12);
            color: var(--primary-dark);
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
        }

        /* panel table / comparisons */
        .feature-panel {
            background:#fff;
            border-radius: 18px;
            padding: 32px;
            border: 1px solid #edf2f7;
            box-shadow: var(--shadow-sm);
        }

        /* review section carousel */
        .evidence-section {
            background: var(--bg-white);
            border-top: 1px solid rgba(229,237,244,.4);
        }
        .client-tag{
            font-size:16px;
            font-weight:600;
            color:var(--primary-dark);
            background: rgba(47,111,174,.1);
            border-radius:40px;
            padding:4px 14px;
        }

        /* ===== ACCORDION ===== */
        .faq-section {
            background: #F0F6FB;
        }
        .accordion-item {
            border-radius: var(--radius-md);
            border: 1px solid rgba(229, 237, 244, 0.8);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(47,111,174,.05);
        }
        .accordion-item:last-child{
            margin-bottom: 0;
        }
        .accordion-button {
            background-color: #fff;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 20px;
            box-shadow: none;
            border-radius: 0;
            position: relative;
        }
        .accordion-button:focus{
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            background:#F7FAFC;
            color: var(--primary-dark);
            font-weight: 600;
        }
        .accordion-button::after{
            font-size:18px;
            filter: hue-rotate(-5deg) saturate(1);
            transition: transform .2s;
            color: var(--primary);
        }
        .accordion-body {
            padding: 12px 20px 20px;
            font-size: 15px;
            color: var(--text-muted);
        }

        /* CTA Area */
        .cta-panel {
            background: linear-gradient(105deg, #183D62 0%, #2F6FAE 64%, #4FB0C6 130%);
            border-radius: 22px;
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
            color:#fff;
        }
        .cta-panel::after{
            content:'';
            position:absolute;
            right: -100px;
            top:-110px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,.07);
        }
        .cta-panel h2 {
            font-size: 32px;
            font-weight: 700;
            color:#fff;
            margin-bottom: 12px;
        }
        .cta-panel p{
            color: rgba(255,255,255,.85);
            font-size:15px;
            max-width: 600px;
            margin-bottom: 24px;
        }
        .icon-list-check {
            list-style:none;
            margin: 20px 0 28px;
            padding:0;
            display: flex;
            flex-wrap: wrap;
            column-gap: 24px;
            row-gap: 10px;
        }
        .icon-list-check li{
            color: rgba(255,255,255,.9);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .icon-list-check li i{
            color: #7ef0b5;
            font-size: 17px;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #16212E;
            color: #B6C3D0;
            padding: 64px 0 0 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand i {
            color: #4FB0C6;
            font-size: 22px;
        }
        .site-footer .footer-desc {
            color: #A4B4C2;
            max-width: 340px;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .footer-brand-icons {
            display: flex;
            gap: 10px;
        }
        .footer-brand-icons span {
            width: 38px;
            height: 38px;
            background: rgba(255,255,255,.07);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #caddea;
            font-size: 17px;
            border:1px solid rgba(255,255,255,.06);
        }
        .site-footer h4.footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 22px;
        }
        .site-footer ul.footer-link {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul.footer-link li {
            margin-bottom: 10px;
        }
        .site-footer ul.footer-link li a,
        .site-footer ul.footer-link li {
            color: #A4B4C2;
            font-size: 14px;
            text-decoration: none;
            transition: color .25s;
        }

        .site-footer ul.footer-link li a i {
            color: #556d82;
            margin-right: 4px;
            font-size: 12px;
        }
        .site-footer ul.footer-link li a:hover{
            color:#fff;
            text-decoration: none;
        }
        .site-footer .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .site-footer .footer-contact li i {
            color: #4FB0C6;
            font-size: 14px;
            margin-top: 5px;
            width: 18px;
        }

        .site-footer .footer-bottom {
            margin-top: 52px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,.1);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items:center;
            font-size: 13px;
            color: #8B9EAE;
            gap:8px;
        }
        .site-footer .footer-bottom i {
            margin-right: 6px;
        }
        html a { -webkit-tap-highlight-color: transparent; }

        /* RESPONSIVE */
        @media (max-width: 991.98px) {
            .navbar-nav { padding: 10px 0 16px; gap:0; }
            .navbar-nav .nav-link { padding: 12px 4px!important; color:var(--text-main); }
            .nav-link.active::after { left: 0; right: 8px; bottom: 6px; }
            .header-btn { display: none; }
            .navbar-collapse .header-btn { display: inline-block; margin-left: 0; }
            .page-header h1 { font-size: 31px; }
            .section-page-block { padding: 48px 0; }
            .split-block .split-media { min-height: 240px; }
            .page-header { padding: 40px 0 40px; }
            .page-header .section-eyebrow { font-size: 12px; padding: 5px 14px; }
            .page-header .lead { max-width: 100%; }
        }

        @media (max-width: 767.98px) {
            body { font-size: 15px; }
            .section-page-block .section-heading h2 { font-size: 24px; }
            .section-page-block { padding: 38px 0; }
            .page-header { padding: 32px 0 32px; }
            .page-header h1 { font-size: 26px; }
            .navbar-brand span { font-size: 19px; }
            .cta-panel { padding: 34px 24px; }
            .cta-panel h2{ font-size: 24px; }
            .icon-list-check { flex-direction: column; }
            .split-block .split-content { padding: 28px 24px; }
            .split-block .split-content h3 {font-size: 20px;}
            .feature-card { padding: 22px; }
        }
        @media (max-width: 520px) {
            .btn-primary, .btn-outline-primary { text-align: center;  }
            .page-header-actions { flex-wrap: wrap; }
            .icon-list-check { flex-direction: column; }
            .split-block .split-content { padding: 24px 18px; }
        }

/* roulang page: category1 */
:root {
            --brand: #2F6FAE;
            --brand-dark: #1E5086;
            --brand-light: #EDF4FA;
            --cyan: #4FB0C6;
            --bg: #F7FAFC;
            --box-bg: #FFFFFF;
            --heading: #23303E;
            --text: #334150;
            --muted: #66768A;
            --pale: #9AA9B8;
            --line: #E5EDF4;
            --footer-bg: #16212E;
            --radius-xs: 8px;
            --radius-md: 12px;
            --radius: 16px;
            --radius-lg: 22px;
            --shadow: 0 8px 24px rgba(38, 80, 120, 0.07);
            --shadow-hover: 0 16px 36px rgba(38, 80, 120, 0.12);
            --height-header: 68px;
            --font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            background: var(--bg);
            color: var(--heading);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 .6rem;
            color: var(--heading);
            line-height: 1.4;
            font-weight: 700;
        }

        h1 {
            font-size: 2.2rem;
            letter-spacing: 0;
        }

        h2 {
            font-size: 1.9rem;
        }

        h3 {
            font-size: 1.2rem;
        }

        p {
            margin: 0 0 1rem;
        }

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

        a {
            color: var(--brand-dark);
            text-decoration: none;
            transition: color .2s ease, background .2s ease, border .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        a:hover {
            color: var(--brand);
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 1240px;
            padding-left: 18px;
            padding-right: 18px;
        }

        /* 通用按钮 */
        .btn {
            border-radius: var(--radius-xs);
            font-weight: 600;
            padding: .68rem 1.4rem;
            transition: all .2s ease;
        }

        .btn-primary {
            background: var(--brand);
            border: 1px solid var(--brand);
            color: #fff;
            box-shadow: 0 6px 18px rgba(47, 111, 174, .22);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30, 80, 134, .28);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 111, 174, .28);
            outline-offset: 2px;
        }

        .btn-outline-primary {
            background: rgba(255, 255, 255, .7);
            border: 1px solid rgba(47, 111, 174, .65);
            color: var(--brand-dark);
            box-shadow: none;
        }

        .btn-outline-primary:hover {
            background: var(--brand-light);
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-2px);
        }

        .btn-white {
            background: #fff;
            border: 1px solid rgba(255, 255, 255, .92);
            color: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(0, 0, 0, .1);
        }

        .btn-white:hover {
            background: rgba(255, 255, 255, .92);
            color: var(--brand-dark);
            border-color: rgba(255, 255, 255, .92);
            transform: translateY(-2px);
        }

        .btn-ghost-white {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .8);
            color: #fff;
        }

        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Header 与导航 */
        .site-header {
            min-height: var(--height-header);
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
            transition: box-shadow .2s ease, background .2s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 20px rgba(38, 80, 120, .07);
        }

        .site-header .navbar {
            min-height: var(--height-header);
            padding-top: 0;
            padding-bottom: 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            color: var(--heading) !important;
            font-size: 1.16rem;
            font-weight: 800;
            line-height: 1.2;
            padding: .6rem 0;
        }

        .navbar-brand i {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 11px;
            background: var(--brand);
            color: #fff;
            font-size: .95rem;
            box-shadow: 0 8px 18px rgba(47, 111, 174, .22);
        }

        .site-header .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: .65rem .72rem;
            margin: 0 .18rem;
            position: relative;
            white-space: nowrap;
        }

        .site-header .nav-link::after {
            content: "";
            position: absolute;
            left: .72rem;
            right: .72rem;
            bottom: .05rem;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
            width: 0;
            transition: width .24s ease;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: var(--brand-dark);
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            width: calc(100% - 1.44rem);
        }

        .header-btn {
            padding: .48rem 1.15rem;
            font-size: .92rem;
            border-radius: 10px;
        }

        .navbar-toggler {
            border: 0;
            padding: .5rem .6rem;
            border-radius: 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(47, 111, 174, .2);
        }

        /* 面包屑 */
        .page-breadcrumb {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: .4rem .55rem;
            margin: 0 0 16px;
            padding: 0;
            color: var(--muted);
            font-size: .85rem;
        }

        .page-breadcrumb a {
            color: var(--muted);
        }

        .page-breadcrumb a:hover {
            color: var(--brand-dark);
        }

        .page-breadcrumb li:not(:last-child)::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-size: .58rem;
            color: #b8c7d4;
            margin-left: .55rem;
            position: relative;
            top: 1px;
            vertical-align: middle;
        }

        /* 页面 Banner */
        .page-banner {
            position: relative;
            overflow: hidden;
            padding: 76px 0 86px;
            background:
                linear-gradient(112deg, rgba(243, 249, 253, .96) 0%, rgba(234, 244, 252, .9) 58%, rgba(223, 239, 250, .62)),
                url("/assets/images/backpic/back-1.webp") no-repeat center center / cover;
            border-bottom: 1px solid var(--line);
        }

        .banner-eyebrow {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .55rem;
            margin-bottom: 12px;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: var(--brand);
            color: #fff;
            border-radius: 40px;
            padding: .28rem .85rem;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .banner-tag.soft {
            background: rgba(255, 255, 255, .75);
            color: var(--brand-dark);
            border: 1px solid rgba(47, 111, 174, .18);
        }

        .page-banner h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            color: var(--heading);
            margin-bottom: 14px;
        }

        .page-lead {
            max-width: 620px;
            color: var(--text);
            font-size: 1.05rem;
            margin-bottom: 26px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 16px;
            margin-top: 22px;
        }

        .mobile-preview {
            margin-left: auto;
            max-width: 390px;
            position: relative;
            background: rgba(255, 255, 255, .82);
            border: 1px solid rgba(255, 255, 255, .9);
            border-radius: var(--radius-lg);
            padding: 14px;
            box-shadow: 0 20px 48px rgba(38, 80, 120, .12);
        }

        .preview-screen {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--line);
            min-height: 240px;
        }

        .preview-screen img {
            height: 250px;
            width: 100%;
            object-fit: cover;
        }

        .preview-caption {
            padding: 14px 12px 10px;
        }

        .preview-caption strong {
            display: block;
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .preview-caption span {
            color: var(--muted);
            font-size: .8rem;
        }

        .float-note {
            background: var(--brand);
            color: #fff;
            padding: .55rem 1rem;
            border-radius: 40px;
            font-size: .83rem;
            font-weight: 600;
            display: inline-flex;
            gap: .4rem;
            align-items: center;
            position: absolute;
            right: -6px;
            top: 18px;
            box-shadow: 0 10px 24px rgba(47, 111, 174, .26);
        }

        /* 信任通栏 */
        .trust-ribbon {
            position: relative;
            z-index: 3;
            margin-top: -36px;
        }

        .trust-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            background: #fff;
            border: 1px solid rgba(229, 237, 244, .8);
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            overflow: hidden;
        }

        .trust-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 20px 22px;
            border-right: 1px solid var(--line);
        }

        .trust-item:last-child {
            border-right: 0;
        }

        .trust-icon {
            width: 44px;
            height: 44px;
            flex: 0 0 auto;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-light);
            color: var(--brand);
            font-size: 1.05rem;
        }

        .trust-item strong {
            display: block;
            font-size: .95rem;
            line-height: 1.4;
            color: var(--heading);
        }

        .trust-item span {
            font-size: .8rem;
            color: var(--muted);
            line-height: 1.4;
            display: block;
        }

        /* Section */
        .section-block {
            padding: 90px 0;
        }

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

        .section-white {
            background: #fff;
        }

        .section-head {
            max-width: 780px;
            margin: 0 auto 46px;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--brand-light);
            color: var(--brand-dark);
            border-radius: 40px;
            padding: .32rem .95rem;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .04em;
        }

        .section-head h2 {
            margin: 16px 0 12px;
            font-size: 1.8rem;
        }

        .section-head p {
            color: var(--muted);
            margin-bottom: 0;
        }

        /* 移动端访问方式 */
        .access-figure {
            height: 100%;
            min-height: 410px;
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            margin: 0;
            box-shadow: var(--shadow);
        }

        .access-figure img {
            width: 100%;
            height: 100%;
            min-height: 410px;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .access-figure:hover img {
            transform: scale(1.03);
        }

        .access-figure figcaption {
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 18px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(8px);
            padding: 16px 18px;
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, .8);
            box-shadow: var(--shadow);
        }

        .access-figure figcaption strong {
            display: block;
            font-size: .97rem;
        }

        .access-figure figcaption span {
            color: var(--muted);
            font-size: .82rem;
        }

        .access-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            height: 100%;
        }

        .access-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 22px 22px 18px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .access-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .access-icon {
            width: 48px;
            height: 48px;
            flex: 0 0 auto;
            border-radius: 13px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand-light), #e2f0fa);
            color: var(--brand);
            font-size: 1.05rem;
        }

        .access-card a {
            font-size: .85rem;
            font-weight: 600;
        }

        /* 四步流程 */
        .step-section {
            background: #fff;
            border-top: 1px solid var(--line);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-card {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px 22px;
            position: relative;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-no {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            border-radius: 12px;
            margin-bottom: 14px;
            box-shadow: 0 8px 20px rgba(47, 111, 174, .22);
        }

        .step-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--muted);
            margin-bottom: 0;
            font-size: .88rem;
        }

        .step-tip {
            text-align: center;
            margin-top: 28px;
            color: var(--muted);
            font-size: .86rem;
        }

        .step-tip i {
            color: var(--cyan);
            margin-right: .25rem;
        }

        /* 设备适配和提示 */
        .compat-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 30px;
            height: 100%;
        }

        .compat-card h3 {
            font-size: 1.15rem;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .compat-card h3 i {
            color: var(--brand);
        }

        .compat-list {
            list-style: none;
        }

        .compat-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px dashed var(--line);
            color: var(--text);
            font-size: .9rem;
        }

        .compat-list li:last-child {
            border-bottom: 0;
        }

        .compat-list li i {
            color: var(--brand);
            margin-top: 5px;
            font-size: .85rem;
        }

        .tip-chip {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            padding: 20px;
            display: flex;
            gap: 14px;
            margin-bottom: 14px;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .tip-chip:last-child {
            margin-bottom: 0;
        }

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

        .tip-icon {
            width: 42px;
            height: 42px;
            border-radius: 11px;
            background: var(--brand-light);
            color: var(--cyan);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 auto;
            font-size: .9rem;
        }

        .tip-chip strong {
            font-size: .94rem;
            display: block;
            line-height: 1.5;
        }

        .tip-chip span {
            font-size: .82rem;
            color: var(--muted);
            display: block;
        }

        .text-btn-inline {
            font-size: .84rem;
            font-weight: 600;
        }

        /* 登录前索引区 */
        .guide-section {
            background: var(--bg);
            border-top: 1px solid var(--line);
        }

        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .guide-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px 26px;
            display: flex;
            justify-content: space-between;
            gap: 14px;
            box-shadow: var(--shadow);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .guide-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .guide-card .guide-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.02rem;
            margin-bottom: 8px;
        }

        .guide-card .guide-title i {
            color: var(--brand);
        }

        .guide-card p {
            margin: 0 0 8px 30px;
            color: var(--muted);
            font-size: .88rem;
        }

        .guide-meta {
            margin-left: 30px;
            color: var(--pale);
            font-size: .78rem;
        }

        .guide-meta i {
            margin-right: .3rem;
        }

        .guide-card .arrow {
            flex: 0 0 auto;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-light);
            border-radius: 50%;
            color: var(--brand);
            align-self: center;
        }

        /* 评价轮播 */
        .review-block {
            background: #fff;
        }

        .review-carousel {
            background: var(--box-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 34px 60px;
            position: relative;
            min-height: 260px;
        }

        .review-card {
            margin: 0;
        }

        .review-stars {
            color: #f5b342;
            font-size: .85rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .review-card p {
            font-size: 1rem;
            color: var(--text);
            min-height: 72px;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 10px;
        }

        .avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
            font-weight: 700;
            color: var(--brand-dark);
            background: var(--brand-light);
            border: 1px solid rgba(47, 111, 174, .12);
        }

        .review-user strong {
            display: block;
            font-size: .92rem;
        }

        .review-user span {
            color: var(--muted);
            font-size: .82rem;
        }

        .review-carousel .carousel-indicators {
            margin-bottom: 8px;
        }

        .review-carousel .carousel-indicators [data-bs-target] {
            width: 7px;
            height: 7px;
            border-radius: 10px;
            background-color: #b9ccdc;
            border: 0;
            opacity: 1;
            margin-left: 5px;
            margin-right: 5px;
            transition: width .3s ease, background .3s ease;
        }

        .review-carousel .carousel-indicators .active {
            width: 30px;
            background-color: var(--brand);
        }

        /* FAQ 手风琴 */
        .faq-list {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 8px 20px;
            background: #fff;
            box-shadow: var(--shadow);
        }

        .accordion-item {
            border: 0;
            border-bottom: 1px solid var(--line);
            background: transparent;
        }

        .accordion-item:last-of-type {
            border-bottom: 0;
        }

        .accordion-button {
            background: transparent;
            color: var(--heading);
            font-weight: 600;
            font-size: .95rem;
            padding: 1rem .2rem;
            outline: none;
            border: 0;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(47, 111, 174, .18);
            border-radius: 6px;
        }

        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--brand-dark);
            box-shadow: none;
        }

        .accordion-button::after {
            background-size: 14px;
            filter: saturate(0) brightness(0.35);
            transform: none;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: var(--bs-accordion-btn-icon);
            filter: saturate(1);
            transform: rotate(180deg);
        }

        .accordion-body {
            padding: .2rem .2rem 1.2rem;
            color: var(--text);
            font-size: .88rem;
            border-top: 1px dashed var(--line);
        }

        /* CTA */
        .cta-section {
            background: #fff;
        }

        .cta-box {
            background:
                linear-gradient(110deg, rgba(26, 64, 107, .94), rgba(30, 80, 134, .88)),
                url("/assets/images/backpic/back-3.png") no-repeat center center / cover;
            border-radius: 24px;
            color: #fff;
            text-align: center;
            padding: 58px 30px 54px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 46px rgba(28, 72, 116, .18);
        }

        .cta-box h2 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 1.7rem;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .85);
            max-width: 660px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 24px;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, .66);
            padding: 58px 0 22px;
            font-size: .88rem;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: .55rem;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand i {
            color: #bfdcf2;
            font-size: 1rem;
        }

        .footer-desc {
            max-width: 400px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.9;
        }

        .footer-brand-icons {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .footer-brand-icons span {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #cfe2f0;
            background: rgba(255, 255, 255, .08);
        }

        .footer-title {
            color: #fff;
            font-size: .95rem;
            margin: 8px 0 14px;
        }

        .footer-link {
            list-style: none;
        }

        .footer-link li {
            margin-bottom: 8px;
            color: rgba(255, 255, 255, .58);
        }

        .footer-link a {
            color: rgba(255, 255, 255, .62);
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            transition: color .2s ease, padding-left .2s ease;
        }

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

        .footer-contact li {
            color: rgba(255, 255, 255, .6);
            display: flex;
            align-items: flex-start;
            gap: .45rem;
        }

        .footer-contact li i {
            color: #7fb4dd;
            margin-top: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .78rem;
            color: rgba(255, 255, 255, .45);
        }

        /* 响应式 */
        @media (max-width: 991.9px) {
            .section-block {
                padding: 66px 0;
            }
            .trust-ribbon {
                margin-top: 0;
            }
            .trust-inner {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .access-figure,
            .access-figure img {
                min-height: 320px;
            }
            .mobile-preview {
                margin-left: 0;
                max-width: 100%;
            }
            .navbar-collapse {
                background: #fff;
                border-top: 1px solid var(--line);
                margin-top: 0;
                padding: .6rem 0 .8rem;
                box-shadow: 0 10px 20px rgba(38, 80, 120, .05);
            }
            .site-header .nav-link {
                padding: .72rem .65rem;
            }
        }

        @media (max-width: 767.9px) {
            h2 {
                font-size: 1.5rem;
            }
            .page-banner {
                padding: 48px 0 58px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .banner-actions .btn {
                min-width: 140px;
            }
            .trust-item {
                padding: 14px 12px;
            }
            .trust-item strong {
                font-size: .9rem;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 1.45rem;
            }
            .access-figure figcaption {
                padding: 12px 14px;
            }
            .access-card {
                padding: 18px;
                gap: 12px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .guide-card {
                flex-direction: column;
                padding: 18px 16px;
            }
            .guide-card .guide-title {
                margin-bottom: 4px;
            }
            .guide-card p,
            .guide-meta {
                margin-left: 0;
            }
            .review-carousel {
                padding: 22px 18px 54px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 575.9px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .trust-inner {
                grid-template-columns: 1fr 1fr;
            }
            .banner-actions {
                flex-direction: column;
            }
            .banner-actions .btn {
                width: 100%;
            }
            .float-note {
                top: -8px;
                right: 4px;
                font-size: .72rem;
            }
            .page-breadcrumb {
                margin-bottom: 10px;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }

/* roulang page: category3 */
:root {
            --main-blue: #2F6FAE;
            --deep-blue: #1E5086;
            --cyan: #4FB0C6;
            --bg-light: #F7FAFC;
            --bg-white: #ffffff;
            --text-main: #23303E;
            --text-muted: #66768A;
            --text-faint: #9AA9B8;
            --line: #E5EDF4;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-btn: 10px;
            --shadow-sm: 0 8px 24px rgba(38, 80, 120, 0.07);
            --shadow-hover: 0 16px 36px rgba(38, 80, 120, 0.12);
            --font-stack: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --transition-base: all .25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

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

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-light);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--deep-blue);
        }

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

        .container {
            max-width: 1220px;
        }

        .text-primary-custom {
            color: var(--deep-blue) !important;
        }

        /* 顶部导航 */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            position: sticky;
            top: 0;
            z-index: 1060;
            border-bottom: 1px solid transparent;
            transition: box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 20px rgba(30, 80, 134, 0.08);
            border-color: var(--line);
        }

        .site-header .navbar {
            min-height: 68px;
            padding: 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-size: 20px;
            font-weight: 700;
            color: var(--deep-blue);
            letter-spacing: .2px;
            white-space: nowrap;
        }

        .navbar-brand i {
            color: var(--deep-blue);
            font-size: 24px;
            background: rgba(47, 111, 174, 0.12);
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
        }

        .navbar-brand:hover {
            color: var(--deep-blue);
        }

        .navbar-brand:hover i {
            background: rgba(47, 111, 174, 0.2);
            transform: scale(1.02);
        }

        .nav-link {
            font-size: 15.5px;
            font-weight: 500;
            color: var(--text-main) !important;
            padding: 10px 18px !important;
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: transparent;
            border-radius: 2px;
        }

        .nav-link:hover {
            color: var(--deep-blue) !important;
            background: rgba(47, 111, 174, 0.06);
        }

        .nav-link.active {
            color: var(--deep-blue) !important;
            font-weight: 600;
        }

        .nav-link.active::after {
            background: var(--main-blue);
        }

        .navbar-toggler {
            border: 0;
            color: var(--deep-blue);
            padding: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(47, 111, 174, 0.2);
        }

        .header-btn {
            font-size: 14px;
            padding: 9px 21px;
            border-radius: var(--radius-btn);
            background: var(--main-blue);
            border-color: var(--main-blue);
            color: #fff;
            font-weight: 500;
        }

        .header-btn:hover {
            background: var(--deep-blue);
            border-color: var(--deep-blue);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(30, 80, 134, 0.18);
        }

        .header-btn:focus {
            outline: 3px solid rgba(47, 111, 174, 0.25);
            box-shadow: none;
        }

        /* 通用按钮 */
        .btn-main {
            background: var(--main-blue);
            border-color: var(--main-blue);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 11px 24px;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .btn-main:hover {
            background: var(--deep-blue);
            border-color: var(--deep-blue);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(30, 80, 134, 0.2);
        }

        .btn-outline-main {
            background: rgba(247, 250, 252, 0.7);
            border: 1px solid rgba(47, 111, 174, 0.35);
            color: var(--deep-blue);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .btn-outline-main:hover {
            background: rgba(47, 111, 174, 0.08);
            border-color: var(--main-blue);
            color: var(--deep-blue);
            transform: translateY(-2px);
        }

        .btn-main:focus,
        .btn-outline-main:focus {
            box-shadow: 0 0 0 4px rgba(47, 111, 174, 0.18);
        }

        /* 分类横幅 */
        .cat-banner {
            position: relative;
            background: linear-gradient(100deg, rgba(247, 250, 252, 0.98) 10%, rgba(255, 255, 255, 0.82) 55%, rgba(227, 238, 248, 0.75) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 74px 0 64px;
            border-bottom: 1px solid var(--line);
        }

        .cat-bubble {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(47, 111, 174, 0.12);
            border: 1px solid rgba(47, 111, 174, 0.16);
            color: var(--deep-blue);
            font-size: 14px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 40px;
            margin-bottom: 20px;
        }

        .cat-bubble i {
            color: var(--main-blue);
        }

        .cat-banner h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--deep-blue);
            letter-spacing: .3px;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cat-banner .lead {
            font-size: 16px;
            max-width: 760px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            margin-bottom: 22px;
            color: var(--text-faint);
        }

        .breadcrumb-custom a {
            color: var(--main-blue);
        }

        .breadcrumb-custom a:hover {
            color: var(--deep-blue);
            border-bottom: 1px solid var(--main-blue);
        }

        .breadcrumb-custom span {
            color: var(--text-muted);
        }

        /* 辅助功能卡 */
        .section-help {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            background: rgba(79, 176, 198, 0.12);
            color: #2B7C8B;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .section-sub {
            font-size: 15px;
            max-width: 660px;
            color: var(--text-muted);
            margin-bottom: 40px;
        }

        .help-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .help-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 111, 174, 0.18);
        }

        .help-card .card-thumb {
            height: 170px;
            overflow: hidden;
            background: #EAF1F7;
        }

        .help-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .help-card:hover .card-thumb img {
            transform: scale(1.04);
        }

        .help-card .card-body {
            padding: 25px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .help-card .card-tag {
            font-size: 12px;
            font-weight: 600;
            background: rgba(47, 111, 174, 0.08);
            color: var(--main-blue);
            padding: 3px 10px;
            border-radius: 40px;
            margin-bottom: 14px;
            width: fit-content;
        }

        .help-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .help-card p {
            font-size: 14px;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--main-blue);
            gap: 7px;
        }

        .card-link:hover {
            color: var(--deep-blue);
            gap: 11px;
        }

        .card-link i {
            font-size: 12px;
        }

        /* 流程步骤区 */
        .step-wrap {
            background: var(--bg-white);
            border-radius: 24px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-bottom: 24px;
        }

        .step-media {
            height: 100%;
            min-height: 330px;
            background-color: #DFEAF3;
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
            position: relative;
        }

        .step-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(45deg, rgba(30, 80, 134, 0.1), transparent);
        }

        .step-content {
            padding: 44px 38px;
        }

        .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(47, 111, 174, 0.12);
            color: var(--deep-blue);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .step-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .step-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .step-count {
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            background: var(--main-blue);
            color: #fff;
            border-radius: 50%;
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-top: 1px;
        }

        .step-list strong {
            display: block;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 3px;
        }

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

        /* 内容索引卡 */
        .help-index-section {
            padding: 40px 0 80px;
        }

        .help-index-bg {
            background: #fff;
            border-radius: 24px;
            padding: 50px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .index-card {
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 24px;
            background: var(--bg-light);
            height: 100%;
            transition: var(--transition-base);
        }

        .index-card:hover {
            background: #fff;
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(47, 111, 174, 0.2);
        }

        .index-card .index-tag {
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .index-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .index-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .index-topic {
            font-size: 13px;
            color: var(--text-faint);
            list-style: none;
            padding: 0;
            margin: 14px 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .index-topic .text-link {
            color: var(--main-blue);
        }

        .index-topic .text-link:hover {
            color: var(--deep-blue);
        }

        .arrow-link {
            font-size: 13px;
            color: var(--deep-blue);
            font-weight: 600;
        }

        .arrow-link i {
            font-size: 11px;
            transition: transform .2s;
        }

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

        /* 右侧辅助 */
        .side-help-card {
            background: var(--bg-white);
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 26px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 20px;
        }

        .side-help-card h3 {
            font-size: 18px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .side-help-card h3 i {
            color: var(--main-blue);
        }

        .side-status {
            font-size: 14px;
            color: var(--text-muted);
            border-left: 3px solid var(--main-blue);
            background: rgba(247, 250, 252, 0.8);
            border-radius: 0 10px 10px 0;
            padding: 10px 16px;
            margin-bottom: 14px;
        }

        .side-status small {
            display: block;
            color: var(--text-faint);
            font-size: 12.5px;
            margin-top: 4px;
        }

        /* FAQ */
        .faq-section {
            background: #fff;
            padding: 70px 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .faq-panel {
            border: 1px solid var(--line);
            border-radius: 13px;
            background: var(--bg-light);
            margin-bottom: 12px !important;
            overflow: hidden;
        }

        .faq-panel .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: 0;
            box-shadow: none !important;
        }

        .faq-panel .accordion-button::after {
            background-size: 14px;
            opacity: .7;
        }

        .faq-panel .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }

        .faq-panel .accordion-body {
            padding: 4px 22px 20px;
            color: var(--text-muted);
            font-size: 14.5px;
        }

        /* 页面底部转化与联系方式 */
        .cta-wrap {
            background: linear-gradient(115deg, #eef5fb, #f7fafc);
            padding: 70px 0;
        }

        .cta-box {
            background: #fff;
            border-radius: 28px;
            border: 1px solid var(--line);
            padding: 48px;
            box-shadow: var(--shadow-sm);
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--deep-blue);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .contact-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(79, 176, 198, 0.1);
            border: 1px solid rgba(79, 176, 198, 0.22);
            color: #146B7A;
            border-radius: 40px;
            font-size: 14px;
            padding: 6px 14px;
            margin-bottom: 18px;
        }

        .btn-consult {
            background: #fff;
            border: 1px solid rgba(47, 111, 174, 0.3);
            color: var(--deep-blue);
            border-radius: 10px;
            padding: 12px 26px;
            font-weight: 600;
            transition: all .25s;
        }

        .btn-consult:hover {
            background: rgba(47, 111, 174, 0.07);
            border-color: var(--main-blue);
            color: var(--deep-blue);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background-color: #16212E;
            color: #B7C3D0;
            padding: 66px 0 0;
            position: relative;
            z-index: 1;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand i {
            background: rgba(255, 255, 255, 0.1);
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            color: #9CC4DC;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            color: #8DA0B3;
        }

        .footer-brand-icons {
            display: flex;
            gap: 12px;
            margin-top: 22px;
        }

        .footer-brand-icons span {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #8DA9C0;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            display: block;
            width: 30px;
            height: 3px;
            border-radius: 2px;
            background: var(--main-blue);
            position: absolute;
            left: 0;
            bottom: 0;
        }

        .footer-link {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-link li {
            margin-bottom: 12px;
            font-size: 14px;
            color: #8FA1B3;
        }

        .footer-link a {
            color: #96AABC;
        }

        .footer-link a:hover {
            color: #fff;
        }

        .footer-link i {
            font-size: 11px;
            color: rgb(120, 171, 204);
            margin-right: 6px;
        }

        .footer-contact li i {
            margin-right: 10px;
            width: 16px;
            color: #80A5BF;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding: 22px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #8093A5;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 14px;
                padding: 12px 6px;
                margin-top: 10px;
                box-shadow: var(--shadow-sm);
            }

            .nav-link {
                padding-left: 14px !important;
            }

            .header-btn {
                margin-left: 10px;
                margin-top: 5px;
            }

            .cat-banner h1 {
                font-size: 30px;
            }

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

            .step-content {
                padding: 32px 24px;
            }

            .cta-box {
                padding: 32px;
            }
        }

        @media (max-width: 767px) {
            .cat-banner {
                padding: 48px 0 42px;
            }

            .cat-banner h1 {
                font-size: 24px;
            }

            .section-help {
                padding: 50px 0;
            }

            .section-title {
                font-size: 21px;
            }

            .section-sub {
                font-size: 14px;
                margin-bottom: 28px;
            }

            .step-content {
                padding: 24px 18px;
            }

            .help-index-bg {
                padding: 24px 16px;
            }

            .btn-main,
            .btn-outline-main {
                width: 100%;
                margin-bottom: 12px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }