/* roulang page: index */
:root {
  --primary: #2D6CDF;
  --primary-dark: #1E5AC0;
  --primary-light: #EAF2FC;
  --secondary: #F5F9FF;
  --accent: #F5A524;
  --bg-body: #FFFFFF;
  --bg-alt: #F8FAFD;
  --text-heading: #1E2A44;
  --text-body: #4A5568;
  --text-muted: #8A94A6;
  --border: #E5EAF2;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(30,42,68,.06);
  --shadow-md: 0 8px 24px rgba(30,42,68,.08);
  --nav-height: 72px;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-body);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
button, input { font-family: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: 1320px; }

/* ========== Header ========== */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(30,42,68,.04);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--nav-height);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-heading);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.logo:hover { color: var(--primary); }
.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: 10px;
  color: var(--primary);
  flex-shrink: 0;
}
.logo-mark svg { width: 20px; height: 20px; }
.header-search {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}
.header-right {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 22px;
}
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav .nav-link {
  display: inline-flex;
  align-items: center;
  height: var(--nav-height);
  color: var(--text-body);
  font-size: .95rem;
  font-weight: 500;
  position: relative;
  padding: 0 2px;
  border: 0;
  background: none;
}
.main-nav .nav-link:hover { color: var(--primary); }
.main-nav .nav-link.active { color: var(--primary); }
.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--primary);
}
.header-cta {
  height: 38px;
  padding: 0 18px;
  font-size: .9rem;
}

/* 搜索框 */
.search-form {
  position: relative;
  display: flex;
  align-items: center;
  height: 44px;
  background: #F5F7FA;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 16px;
  transition: all .25s ease;
}
.search-form .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
  flex-shrink: 0;
}
.search-form input {
  width: 100%;
  height: 100%;
  border: 0;
  outline: none;
  background: transparent;
  font-size: .95rem;
  color: var(--text-heading);
  padding-left: 30px;
  font-variant-numeric: tabular-nums;
  appearance: none;
  -webkit-appearance: none;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-form:focus-within {
  background: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(45,108,223,.12);
}
.mobile-search { padding-bottom: 14px; }
.mobile-search .search-form { max-width: none; }

/* 汉堡 */
.nav-toggle {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
  flex-shrink: 0;
  transition: all .2s;
}
.nav-toggle:hover { border-color: var(--primary); }
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-heading);
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 移动菜单 */
.mobile-nav {
  display: none;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 8px 24px 20px;
  box-shadow: var(--shadow-md);
}
.mobile-nav.open { display: block; }
.mobile-nav-link {
  display: block;
  padding: 14px 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-body);
  border-bottom: 1px solid var(--border);
}
.mobile-nav-link:hover { color: var(--primary); }
.mobile-nav-link.active { color: var(--primary); }
.mobile-nav-link:last-child { border-bottom: 0; }

/* ========== 按钮 ========== */
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  background: var(--primary);
  color: #FFFFFF;
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary-custom:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #FFFFFF;
  transform: translateY(-1px);
}
.btn-primary-custom:active { transform: translateY(0); }
.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-outline-custom:hover {
  background: rgba(45,108,223,.06);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}
.btn-outline-custom:active { background: rgba(45,108,223,.12); }
.btn-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--primary);
  padding: 4px 0;
  border: 0;
  background: none;
  transition: gap .2s ease;
}
.btn-link-arrow:hover { color: var(--primary-dark); }
.btn-link-arrow:hover span { transform: translateX(4px); }
.btn-link-arrow span { transition: transform .2s ease; display: inline-block; }

/* ========== Hero ========== */
.hero-section {
  position: relative;
  min-height: 560px;
  height: calc(100vh - var(--nav-height));
  max-height: 820px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(180deg, rgba(248,251,255,.88) 0%, rgba(255,255,255,.97) 100%),
    url('/assets/images/backpic/back-1.png') center 20% / cover no-repeat;
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(45,108,223,.07) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 730px;
  padding: 60px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.75);
  border: 1px solid rgba(45,108,223,.18);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 24px;
  letter-spacing: .02em;
}
.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-heading);
  margin: 0 0 20px;
}
.hero-title .hero-slogan {
  display: block;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--primary);
  margin-top: 8px;
}
.hero-sub {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-body);
  margin: 0 0 32px;
  max-width: 620px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-hot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .85rem;
  color: var(--text-muted);
}
.hot-tag {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-body);
  font-size: .82rem;
  padding: 5px 14px;
  transition: all .2s ease;
}
.hot-tag:hover {
  background: rgba(45,108,223,.08);
  border-color: rgba(45,108,223,.3);
  color: var(--primary);
}

/* ========== 通用区块 ========== */
.section-block { padding: 96px 0; }
.bg-alt { background: var(--bg-alt); }
.section-head { margin-bottom: 48px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-tag::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--primary);
  display: inline-block;
}
.section-head h2 {
  font-size: clamp(1.7rem, 2.6vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-heading);
  line-height: 1.3;
  margin: 0 0 12px;
}
.section-head .section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.7;
  margin: 0;
}
.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.section-head-row .section-head { margin-bottom: 0; }

/* ========== 服务六宫格 ========== */
.service-card {
  display: block;
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  height: 100%;
  color: var(--text-body);
  transition: all .25s ease;
  box-shadow: var(--shadow-sm);
}
.service-card:hover {
  border-color: #C2D6F2;
  box-shadow: var(--shadow-md);
  color: var(--text-body);
  transform: translateY(-2px);
}
.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: 10px;
  color: var(--primary);
  margin-bottom: 20px;
  transition: background .25s ease;
}
.service-icon svg { width: 24px; height: 24px; }
.service-card:hover .service-icon { background: rgba(45,108,223,.1); }
.service-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 0 0 8px;
}
.service-card p { font-size: .9rem; color: var(--text-muted); margin: 0 0 16px; line-height: 1.65; }
.service-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--primary);
}
.service-more svg { width: 15px; height: 15px; transition: transform .2s ease; }
.service-card:hover .service-more svg { transform: translateX(4px); }

/* ========== 数据 ========== */
.stats-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 72px 0;
}
.stats-title h2 {
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  font-weight: 700;
  color: var(--text-heading);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.stats-title p { color: var(--text-muted); font-size: .95rem; margin: 0; line-height: 1.7; }
.stat-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease;
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-number {
  font-size: clamp(1.8rem, 2.4vw, 2.2rem);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.stat-number .unit { color: var(--accent); font-size: .8em; margin-left: 2px; }
.stat-label { font-size: .88rem; color: var(--text-muted); }

/* ========== 案例 ========== */
.cases-section .section-head h2 { margin-bottom: 12px; }
.cases-section .section-head p { color: var(--text-muted); font-size: .95rem; line-height: 1.7; margin: 0 0 20px; }
.case-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  height: 100%;
  min-height: 128px;
  transition: all .25s ease;
  box-shadow: var(--shadow-sm);
}
.case-card:hover {
  border-color: #C2D6F2;
  box-shadow: var(--shadow-md);
}
.case-card-img {
  width: 128px;
  height: 96px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-alt);
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.case-card:hover .case-card-img img { transform: scale(1.03); }
.case-card-body { min-width: 0; }
.case-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 0 0 6px;
  line-height: 1.4;
}
.case-card-body p {
  font-size: .85rem;
  color: var(--text-muted);
  margin: 0 0 8px;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.case-meta { display: flex; gap: 8px; flex-wrap: wrap; }
.case-tag {
  display: inline-flex;
  align-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .75rem;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 500;
}

/* ========== 方案 ========== */
.solution-list {
  border-top: 1px solid var(--border);
}
.solution-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 34px 24px;
  border-bottom: 1px solid var(--border);
  transition: background .25s ease;
}
.solution-item:hover { background: var(--bg-alt); }
.solution-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: #D3DCE8;
  font-variant-numeric: tabular-nums;
  min-width: 56px;
  transition: color .25s ease;
}
.solution-item:hover .solution-num { color: var(--primary); }
.solution-body { flex: 1; min-width: 0; }
.solution-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 0 0 6px;
}
.solution-body p {
  color: var(--text-muted);
  font-size: .95rem;
  margin: 0;
  max-width: 740px;
  line-height: 1.7;
}
.solution-more { flex-shrink: 0; }

/* ========== 资讯 CMS ========== */
.news-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s ease;
  height: 100%;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.news-card:hover { border-color: #C2D6F2; box-shadow: var(--shadow-md); }
.news-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-alt);
  flex-shrink: 0;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.news-card:hover .news-card-img img { transform: scale(1.03); }
.news-card .card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.badge-category {
  display: inline-flex;
  align-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .78rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 6px;
  white-space: nowrap;
}
.news-date {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.news-date svg { width: 14px; height: 14px; flex-shrink: 0; }
.news-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-heading);
  line-height: 1.45;
  margin: 0 0 10px;
}
.news-card h3 a { color: inherit; }
.news-card h3 a:hover { color: var(--primary); }
.news-summary {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .btn-link-arrow { margin-top: auto; }
.news-card-lg h3 { font-size: 1.28rem; }
.news-card-lg .card-body { padding: 28px; }
.news-card-sm h3 { font-size: 1.02rem; }
.news-card-sm .card-body { padding: 20px; }
.news-empty {
  width: 100%;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: #FFFFFF;
  padding: 56px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: .95rem;
}
.news-empty svg { width: 32px; height: 32px; margin-bottom: 12px; color: #B0B8C4; }

/* ========== FAQ ========== */
.faq-section .section-head h2 { margin-bottom: 16px; }
.faq-section .section-head p { color: var(--text-muted); font-size: .95rem; }
.accordion-item {
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  margin-bottom: 12px;
  overflow: hidden;
  background: #FFFFFF;
  box-shadow: var(--shadow-sm);
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(45,108,223,.35) !important;
}
.accordion-item:first-of-type, .accordion-item:last-of-type { border-radius: var(--radius) !important; }
.accordion-button {
  box-shadow: none !important;
  background: #FFFFFF;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-heading);
  padding: 20px 22px;
  border: 0;
  border-radius: var(--radius) !important;
}
.accordion-button:not(.collapsed) {
  background: #FFFFFF;
  color: var(--primary);
}
.accordion-button::after {
  width: 18px;
  height: 18px;
  background-size: 18px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A94A6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  transition: transform .25s ease;
  transform: rotate(0);
}
.accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232D6CDF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  transform: rotate(180deg);
}
.accordion-button:focus { box-shadow: none !important; }
.accordion-button:not(.collapsed):focus { box-shadow: none !important; }
.accordion-body {
  padding: 0 22px 20px;
  color: var(--text-muted);
  font-size: .93rem;
  line-height: 1.75;
  border-top: 1px solid var(--border);
  background: #FFFFFF;
}

/* ========== CTA ========== */
.cta-section { padding: 96px 0; background: var(--bg-alt); }
.cta-box {
  background:
    linear-gradient(180deg, rgba(245,249,255,.92) 0%, rgba(255,255,255,.98) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border: 1px dashed rgba(45,108,223,.4);
  border-radius: 16px;
  padding: 56px 48px;
  position: relative;
}
.cta-box h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  line-height: 1.35;
}
.cta-box p { color: var(--text-body); font-size: 1rem; margin: 0; line-height: 1.7; max-width: 560px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }

/* ========== Footer ========== */
.site-footer {
  background: #1E2A44;
  color: #C6CFDC;
  font-size: .92rem;
}
.footer-main { padding: 80px 0 48px; }
.footer-logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-logo .logo-mark {
  background: rgba(255,255,255,.1);
  color: #FFFFFF;
}
.footer-desc { color: #9AA7BA; line-height: 1.75; margin-bottom: 24px; max-width: 320px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  transition: all .2s ease;
}
.footer-social a:hover {
  color: #FFFFFF;
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.06);
}
.footer-social svg { width: 18px; height: 18px; }
.site-footer h4 {
  color: #FFFFFF;
  font-size: .95rem;
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: .03em;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  color: #9AA7BA;
  font-size: .9rem;
  transition: color .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-links a::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  opacity: .7;
}
.footer-links a:hover { color: #FFFFFF; }
.footer-info p {
  margin: 0 0 8px;
  color: #9AA7BA;
  font-size: .9rem;
  line-height: 1.7;
}
.footer-info a { color: #C6CFDC; }
.footer-info a:hover { color: #FFFFFF; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .85rem;
  color: #9AA7BA;
}
.footer-bottom a { color: #9AA7BA; }
.footer-bottom a:hover { color: #FFFFFF; }
.footer-bottom-links { display: flex; gap: 20px; }

/* ========== 回顶 ========== */
.back-top-btn {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: none;
  background: rgba(30,42,68,.75);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
  z-index: 999;
  cursor: pointer;
}
.back-top-btn.show { opacity: 1; visibility: visible; }
.back-top-btn:hover { background: var(--primary); }
.back-top-btn svg { width: 18px; height: 18px; }

/* ========== 响应式 ========== */
@media (max-width: 1199.98px) {
  .header-search { max-width: 380px; }
  .footer-main .col-lg-4:first-child { margin-bottom: 32px; }
}
@media (max-width: 991.98px) {
  .section-block { padding: 72px 0; }
  .cta-section { padding: 72px 0; }
  .hero-section { height: auto; max-height: none; min-height: 560px; }
  .hero-inner { padding: 60px 0; }
  .mobile-nav { display: none; }
  .mobile-nav.open { display: block; }
  .stats-title { margin-bottom: 32px; }
  .cta-box { padding: 40px 32px; }
  .cta-actions { justify-content: flex-start; }
  .footer-main { padding: 64px 0 32px; }
}
@media (max-width: 767.98px) {
  .section-block { padding: 56px 0; }
  .cta-section { padding: 56px 0; }
  .hero-section { min-height: 520px; }
  .hero-inner { padding: 48px 0; }
  .hero-actions .btn-primary-custom, .hero-actions .btn-outline-custom { width: 100%; }
  .solution-item { flex-direction: column; align-items: flex-start; gap: 16px; padding: 28px 20px; }
  .solution-num { min-width: auto; font-size: 1.2rem; }
  .solution-more { align-self: stretch; }
  .solution-more .btn-link-arrow { width: 100%; justify-content: space-between; }
  .case-card { flex-direction: row; }
  .case-card-img { width: 100px; height: 76px; }
  .news-card h3 { font-size: 1.05rem; }
  .news-card-lg h3 { font-size: 1.15rem; }
  .news-card-sm h3 { font-size: .98rem; }
  .cta-box { padding: 32px 24px; }
  .footer-main { padding: 48px 0 24px; }
  .back-top-btn { right: 16px; bottom: 16px; }
}
@media (max-width: 575.98px) {
  .header-inner { gap: 12px; }
  .logo { font-size: 1.08rem; }
  .logo-mark { width: 32px; height: 32px; }
  .hero-sub { font-size: 1rem; }
  .hero-title { font-size: 1.85rem; }
  .hero-title .hero-slogan { font-size: 1.25rem; }
  .section-head h2 { font-size: 1.55rem; }
  .section-head-row { flex-direction: column; align-items: flex-start; gap: 16px; }
  .case-card { flex-direction: column; align-items: flex-start; }
  .case-card-img { width: 100%; height: auto; aspect-ratio: 16/9; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category1 */
:root {
  --primary: #2D6CDF;
  --primary-dark: #1E5AC0;
  --primary-lighter: #EAF2FC;
  --secondary: #F5F9FF;
  --accent: #F5A524;
  --bg-body: #FFFFFF;
  --bg-alt: #F8FAFD;
  --text-title: #1E2A44;
  --text-body: #4A5568;
  --text-muted: #8A94A6;
  --border: #E5EAF2;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 1px 3px rgba(30, 42, 68, .06);
  --shadow-hover: 0 8px 24px rgba(30, 42, 68, .08);
  --shadow-nav: 0 2px 8px rgba(30, 42, 68, .04);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
button, input, textarea, select { font-family: inherit; }
.container { max-width: 1320px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

/* ===== Header / Nav ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-nav);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: 72px;
  position: relative;
  gap: 16px;
  padding: 8px 0;
}
.header-main {
  display: flex;
  align-items: center;
  width: 100%;
  flex: 1;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: .01em;
}
.brand:hover { color: var(--text-title); }
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary-lighter);
  color: var(--primary);
  flex-shrink: 0;
}
.logo-mark svg { width: 20px; height: 20px; }

.search-form {
  flex: 1;
  max-width: 560px;
  position: relative;
  margin: 0 auto;
}
.search-form .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color .2s;
}
.search-form input {
  width: 100%;
  height: 44px;
  border: 1px solid transparent;
  background: #F5F7FA;
  border-radius: 44px;
  padding: 0 20px 0 44px;
  font-size: .95rem;
  color: var(--text-title);
  transition: background .2s, border-color .2s, box-shadow .2s;
}
.search-form input::placeholder { color: #A6B0C0; }
.search-form input:focus {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 2px 10px rgba(45,108,223,.12);
  outline: none;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 6px;
  position: relative;
  transition: color .2s, background .2s;
}
.main-nav .nav-link:hover { color: var(--primary); background: var(--primary-lighter); }
.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav .nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.btn-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 20px;
  border: 1px solid var(--primary);
  border-radius: var(--radius-btn);
  color: var(--primary);
  background: #fff;
  font-size: .9rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background .2s, color .2s, border-color .2s;
}
.btn-login:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text-title);
  cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }
.mobile-search { width: 100%; display: none; }
.mobile-menu {
  display: none;
  width: 100%;
  flex-direction: column;
  border-top: 1px solid var(--border);
  padding: 12px 0 8px;
}
.mobile-menu.open { display: flex; }
.mobile-menu .main-nav {
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  gap: 0;
}
.mobile-menu .main-nav .nav-link { width: 100%; padding: 12px 8px; font-size: 1.05rem; border-bottom: 1px solid #F2F5FA; }
.mobile-menu .main-nav .nav-link.active::after { display: none; }
.mobile-menu .btn-login { margin: 12px 0 4px; width: 100%; }
.mobile-search { display: block; }
@media (max-width: 991.98px) {
  .header-inner { gap: 10px; }
  .header-main { flex-wrap: wrap; }
  .search-form { order: 3; max-width: none; width: 100%; }
  .header-right { margin-left: auto; }
  .desktop-nav { display: none !important; }
  .mobile-search { display: block; }
}
@media (min-width: 992px) {
  .nav-toggle { display: none !important; }
  .mobile-menu { display: none !important; }
  .mobile-search { display: none !important; }
}

/* ===== Page Hero (category top) ===== */
.page-head {
  background: var(--secondary);
  border-bottom: 1px solid var(--border);
  padding: 48px 0 40px;
}
.breadcrumb-wrap {
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb-wrap a { color: var(--text-muted); transition: color .2s; }
.breadcrumb-wrap a:hover { color: var(--primary); }
.breadcrumb-wrap .sep { color: #C3C9D4; margin: 0 2px; }
.breadcrumb-wrap .current { color: var(--text-title); font-weight: 500; }
.page-head h1 {
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.3;
  margin: 0 0 12px;
}
.page-head .lead-desc {
  font-size: .98rem;
  color: var(--text-body);
  max-width: 760px;
  line-height: 1.8;
  margin-bottom: 0;
}

/* ===== Section Base ===== */
.section { padding: 72px 0; border-top: 1px solid var(--border); }
.section-alt { background: var(--bg-alt); }
.section-head {
  margin-bottom: 36px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--primary);
  text-transform: uppercase;
}
.section-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 2px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.3;
  margin: 6px 0 8px;
}
.section-head .desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.7;
}
.section-link {
  font-size: .92rem;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s, color .2s;
  white-space: nowrap;
}
.section-link:hover { gap: 8px; color: var(--primary-dark); }

/* ===== Category Tabs ===== */
.cat-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.cat-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  border-radius: 44px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-body);
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
}
.cat-tab:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-lighter); }
.cat-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(45,108,223,.2);
}

/* ===== Site List Cards ===== */
.site-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color .2s, box-shadow .2s, transform .2s;
  position: relative;
}
.site-card:hover {
  border-color: #C2D6F2;
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.site-card .card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.site-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--primary-lighter);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.site-icon svg { width: 22px; height: 22px; }
.site-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-title);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.site-card h3 .arrow {
  color: var(--text-muted);
  font-size: .9rem;
  transition: color .2s, transform .2s;
}
.site-card:hover h3 .arrow { color: var(--primary); transform: translateX(3px); }
.site-card .card-summary {
  font-size: .92rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
}
.site-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.badge-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: .78rem;
  font-weight: 500;
}
.badge-tag.accent {
  background: #FEF3E2;
  color: #D27900;
}
.site-link {
  font-size: .85rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.site-link:hover { color: var(--primary); }

/* ===== Scenario cards ===== */
.scenario-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s, border-color .2s;
}
.scenario-card:hover { border-color: #C2D6F2; box-shadow: var(--shadow-hover); }
.scenario-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-lighter);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.scenario-icon svg { width: 26px; height: 26px; }
.scenario-card h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.scenario-card p { font-size: .92rem; color: var(--text-body); line-height: 1.7; margin: 0; }

/* ===== Steps ===== */
.step-wrap { counter-reset: step; }
.step-item {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s, border-color .2s;
  overflow: hidden;
}
.step-item:hover { border-color: #C2D6F2; box-shadow: var(--shadow-hover); }
.step-num {
  font-size: 2.4rem;
  font-weight: 700;
  color: #E2E8F2;
  line-height: 1;
  margin-bottom: 14px;
  transition: color .2s;
}
.step-item:hover .step-num { color: var(--primary); }
.step-item h3 { font-size: 1.05rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.step-item p { font-size: .9rem; color: var(--text-body); line-height: 1.7; margin: 0; }

/* ===== Feature cards (coverpic) ===== */
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s, border-color .2s, transform .2s;
  height: 100%;
}
.feature-card:hover { box-shadow: var(--shadow-hover); border-color: #C2D6F2; transform: translateY(-3px); }
.feature-card .feature-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--secondary);
}
.feature-card .feature-body { padding: 22px 24px 24px; }
.feature-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.feature-card p { font-size: .9rem; color: var(--text-body); line-height: 1.65; margin-bottom: 14px; }
.feature-card .feature-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.feature-card .feature-meta .badge-tag { background: var(--primary-lighter); color: var(--primary); }
.feature-card .feature-link {
  font-size: .88rem;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.feature-card .feature-link:hover { gap: 8px; }

/* ===== FAQ ===== */
.faq-wrap .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.faq-wrap .accordion-item:first-of-type { border-radius: var(--radius-card); }
.faq-wrap .accordion-item:last-of-type { border-radius: var(--radius-card); }
.faq-wrap .accordion-button {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-title);
  background: #fff;
  padding: 18px 22px;
  box-shadow: none;
}
.faq-wrap .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: var(--secondary);
  border-left: 3px solid var(--primary);
}
.faq-wrap .accordion-button::after { background-size: 16px; }
.faq-wrap .accordion-button:focus { box-shadow: none; border-radius: 0; }
.faq-wrap .accordion-body { padding: 4px 22px 20px; font-size: .93rem; color: var(--text-body); line-height: 1.75; }

/* ===== CTA ===== */
.cta-section {
  background: var(--secondary);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.55);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; background: rgba(255,255,255,.6); border: 1px dashed #C2D6F2; border-radius: 20px; padding: 52px 36px; text-align: center; }
.cta-inner h2 { font-size: clamp(1.5rem, 2.2vw, 2rem); font-weight: 700; color: var(--text-title); margin-bottom: 12px; }
.cta-inner p { font-size: 1rem; color: var(--text-body); max-width: 600px; margin: 0 auto 28px; }

/* ===== Buttons override ===== */
.btn-primary-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff !important;
  border: 1px solid var(--primary);
  font-size: .95rem;
  font-weight: 500;
  transition: background .2s, border-color .2s, box-shadow .2s;
}
.btn-primary-brand:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: 0 6px 18px rgba(45,108,223,.25); }
.btn-outline-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  font-size: .95rem;
  font-weight: 500;
  transition: background .2s, color .2s, border-color .2s;
}
.btn-outline-brand:hover { background: rgba(45,108,223,.06); color: var(--primary-dark); border-color: var(--primary-dark); }

/* ===== Back to top ===== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: none;
  background: rgba(30,42,68,.72);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, background .3s, transform .3s;
  transform: translateY(10px);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary); }

/* ===== Footer ===== */
.site-footer {
  background: #1E2A44;
  color: #C6CFDC;
  padding: 64px 0 0;
}
.footer-main { padding-bottom: 40px; }
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo .logo-mark { background: rgba(255,255,255,.1); color: #fff; }
.footer-desc { font-size: .9rem; line-height: 1.7; color: #AEBACD; max-width: 300px; margin-bottom: 18px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.7);
  transition: background .2s, color .2s;
}
.footer-social a:hover { background: var(--primary); color: #fff; }
.footer-social svg { width: 18px; height: 18px; }
.site-footer h4 {
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: .02em;
}
.footer-links { display: flex; flex-direction: column; gap: 6px; }
.footer-links a {
  color: #AEBACD;
  font-size: .88rem;
  padding-left: 12px;
  position: relative;
  transition: color .2s, padding-left .2s;
}
.footer-links a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}
.footer-links a:hover { color: #fff; padding-left: 16px; }
.footer-info p { margin: 0 0 6px; font-size: .88rem; color: #AEBACD; }
.footer-info a { color: #AEBACD; transition: color .2s; }
.footer-info a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .82rem;
  color: #8B98AC;
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .section { padding: 56px 0; }
  .header-main { flex-wrap: wrap; }
  .header-right .main-nav { display: none; }
  .search-form { max-width: none; order: 5; width: 100%; }
}
@media (max-width: 767.98px) {
  .section { padding: 48px 0; }
  .page-head { padding: 36px 0 28px; }
  .site-card { padding: 20px; }
  .cta-inner { padding: 36px 20px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .btn-primary-brand, .btn-outline-brand { width: 100%; }
  .step-item { padding: 22px 18px 18px; }
}
@media (max-width: 520px) {
  .brand { font-size: 1.1rem; }
  .logo-mark { width: 32px; height: 32px; }
  .cat-tabs { gap: 8px; }
  .cat-tab { padding: 8px 16px; font-size: .85rem; }
  .site-card .card-summary { font-size: .88rem; }
  .section-head h2 { font-size: 1.5rem; }
  .header-right { gap: 4px; }
}

/* roulang page: article */
:root{
  --c-primary:#2D6CDF;
  --c-primary-dark:#1E5AC0;
  --c-secondary:#F5F9FF;
  --c-accent:#F5A524;
  --c-dark:#1E2A44;
  --c-text:#4A5568;
  --c-muted:#8A94A6;
  --c-border:#E5EAF2;
  --c-alt:#F8FAFD;
  --c-white:#FFFFFF;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 3px rgba(30,42,68,.06);
  --shadow-md:0 8px 24px rgba(30,42,68,.08);
  --font-sans:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:45,108,223;
  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--c-text);
  --bs-body-bg:var(--c-white);
  --bs-border-color:var(--c-border);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4,h5,h6{
  color:var(--c-dark);
  font-weight:700;
  line-height:1.3;
  margin-top:0;
  letter-spacing:-.01em;
}
ul,ol{padding-left:1.25rem;}
.btn{
  border-radius:var(--radius-sm);
  font-weight:500;
  font-size:1rem;
  padding:10px 24px;
  transition:all .25s ease;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  border:1px solid transparent;
}
.btn:focus-visible,.btn:focus,.form-control:focus,input:focus{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
.btn-primary{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--c-primary-dark);
  border-color:var(--c-primary-dark);
  color:#fff;
}
.btn-outline-primary{
  background:transparent;
  border:1px solid var(--c-primary);
  color:var(--c-primary);
}
.btn-outline-primary:hover{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.btn-ghost{
  background:transparent;
  border:1px solid var(--c-border);
  color:var(--c-text);
}
.btn-ghost:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:var(--c-secondary);
}
.container{max-width:1320px;}
.section{padding:96px 0;}
.section-alt{background:var(--c-alt);}

/* 导航 */
.reading-progress{
  position:fixed;
  top:0;
  left:0;
  height:3px;
  width:0;
  background:var(--c-primary);
  z-index:2000;
  transition:width .1s linear;
}
.main-header{
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:0 2px 8px rgba(30,42,68,.04);
  position:sticky;
  top:0;
  z-index:1000;
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
  padding:10px 0;
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:700;
  color:var(--c-dark);
  letter-spacing:-.02em;
  flex-shrink:0;
  line-height:1;
}
.brand-logo:hover{color:var(--c-dark);}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--c-secondary);
  border:1px solid var(--c-border);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--c-primary);
}
.logo-mark svg{width:20px;height:20px;}
.header-search{
  flex:1 1 500px;
  max-width:600px;
  display:flex;
  align-items:center;
  background:#F5F7FA;
  border:2px solid transparent;
  border-radius:48px;
  height:46px;
  padding:0 18px;
  transition:all .25s ease;
}
.header-search:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 4px 14px rgba(45,108,223,.12);
}
.header-search svg{
  width:18px;
  height:18px;
  color:var(--c-muted);
  margin-right:10px;
  flex-shrink:0;
  stroke-width:2;
}
.header-search input{
  flex:1;
  border:none !important;
  background:transparent !important;
  outline:none !important;
  font-size:.95rem;
  color:var(--c-dark);
  font-family:var(--font-sans);
  box-shadow:none !important;
}
.header-search input::placeholder{color:#9aa3b2;}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.main-nav .nav-link{
  display:inline-block;
  padding:8px 16px;
  color:var(--c-text);
  border-radius:8px;
  font-size:.95rem;
  font-weight:500;
  position:relative;
  transition:all .2s;
  text-decoration:none;
  background:none;
  border:none;
}
.main-nav .nav-link:hover{
  color:var(--c-primary);
  background:var(--c-secondary);
}
.main-nav .nav-link.active{
  color:var(--c-primary);
  font-weight:600;
}
.main-nav .nav-link.active::after{
  content:'';
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
}
.header-cta{
  white-space:nowrap;
  border:1px solid var(--c-primary);
  background:transparent;
  color:var(--c-primary);
  border-radius:8px;
  padding:8px 18px;
  font-size:.9rem;
  font-weight:500;
  transition:all .2s;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  min-height:40px;
}
.header-cta:hover{
  background:var(--c-primary);
  color:#fff;
  border-color:var(--c-primary);
}
.mobile-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--c-border);
  background:transparent;
  border-radius:8px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
  padding:0;
}
.mobile-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--c-dark);
  border-radius:2px;
  transition:all .3s;
}
.mobile-menu{
  display:none;
  background:#fff;
  border-top:1px solid var(--c-border);
  padding:16px 0 24px;
}
.mobile-menu.open{display:block;}
.mobile-menu-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  margin-bottom:16px;
}
.mobile-menu-nav a{
  padding:12px 16px;
  font-size:1.05rem;
  color:var(--c-dark);
  font-weight:500;
  border-radius:8px;
  transition:all .2s;
  text-decoration:none;
}
.mobile-menu-nav a:hover{
  background:var(--c-secondary);
  color:var(--c-primary);
}
.mobile-menu-nav a.active{
  background:var(--c-secondary);
  color:var(--c-primary);
  font-weight:600;
}
.mobile-menu .btn{width:100%;}
@media(max-width:991.98px){
  .desktop-nav,.header-cta{display:none !important;}
  .mobile-toggle{display:flex;}
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 16px;}
  .header-search{order:3;flex:0 0 100%;max-width:100%;width:100%;}
  .header-search input{font-size:1rem;}
}
@media(min-width:992px){
  .mobile-menu{display:none !important;}
}

/* 面包屑 */
.breadcrumb-wrap{
  background:var(--c-alt);
  border-bottom:1px solid var(--c-border);
  padding:14px 0;
}
.breadcrumb-list{
  display:flex;
  align-items:center;
  gap:8px;
  list-style:none;
  padding:0;
  margin:0;
  font-size:.85rem;
  color:var(--c-muted);
  flex-wrap:wrap;
}
.breadcrumb-list a{
  color:var(--c-muted);
  text-decoration:none;
}
.breadcrumb-list a:hover{color:var(--c-primary);}
.breadcrumb-list .divider{color:#c1c9d6;}
.breadcrumb-list .current{
  color:var(--c-dark);
  font-weight:500;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:320px;
}
@media(max-width:575.98px){
  .breadcrumb-list .current{max-width:200px;}
}

/* 文章页 */
.article-page{padding:48px 0 80px;}
.article-main{
  max-width:780px;
}
.article-header{
  text-align:center;
  padding:16px 0 28px;
}
.category-pill,.card-tag,.sidebar-tag{
  display:inline-block;
  background:rgba(45,108,223,.08);
  color:var(--c-primary);
  font-size:.8rem;
  font-weight:500;
  padding:4px 14px;
  border-radius:6px;
  margin-bottom:16px;
}
.article-header h1{
  font-size:clamp(1.6rem,3vw,2.6rem);
  line-height:1.25;
  margin-bottom:20px;
  color:var(--c-dark);
  font-weight:700;
  letter-spacing:-.02em;
}
.article-meta{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:24px;
  color:var(--c-muted);
  font-size:.875rem;
  flex-wrap:wrap;
}
.article-meta .meta-date{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.article-meta svg{
  width:15px;
  height:15px;
  color:var(--c-accent);
  stroke-width:2;
}
.article-divider{
  border:none;
  border-top:1px solid var(--c-border);
  margin:0 0 32px;
}
.article-body{
  font-size:1.075rem;
  line-height:1.85;
  color:var(--c-text);
}
.article-body p{
  margin-bottom:1.5em;
}
.article-body h2{
  font-size:1.4rem;
  font-weight:700;
  color:var(--c-dark);
  margin:2.2em 0 .8em;
  padding-top:.2em;
}
.article-body h3{
  font-size:1.2rem;
  font-weight:600;
  color:var(--c-dark);
  margin:1.8em 0 .6em;
}
.article-body img{
  border-radius:var(--radius);
  margin:1.5em 0;
  max-width:100%;
  box-shadow:var(--shadow-sm);
}
.article-body blockquote{
  border-left:4px solid var(--c-primary);
  background:var(--c-secondary);
  padding:16px 24px;
  border-radius:0 8px 8px 0;
  margin:1.8em 0;
  color:var(--c-text);
  font-size:.98rem;
}
.article-body ul,.article-body ol{
  margin-bottom:1.5em;
  padding-left:1.4em;
}
.article-body li{
  margin-bottom:.5em;
}
.article-body a{
  color:var(--c-primary);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-color:rgba(45,108,223,.35);
  transition:background .2s,text-decoration-color .2s;
}
.article-body a:hover{
  background:rgba(45,108,223,.08);
  text-decoration-color:var(--c-primary);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:.95rem;
}
.article-body th,.article-body td{
  border:1px solid var(--c-border);
  padding:10px 14px;
  text-align:left;
}
.article-body th{
  background:var(--c-alt);
  color:var(--c-dark);
  font-weight:600;
}
/* 尾部标签 */
.article-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  border-top:1px solid var(--c-border);
  border-bottom:1px solid var(--c-border);
  padding:20px 0;
  margin:32px 0;
}
.article-tags{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.tag-pill{
  display:inline-block;
  background:var(--c-secondary);
  color:var(--c-text);
  font-size:.8rem;
  padding:4px 12px;
  border-radius:6px;
  border:1px solid var(--c-border);
  transition:all .2s;
}
.tag-pill:hover{
  background:rgba(45,108,223,.08);
  border-color:var(--c-primary);
  color:var(--c-primary);
}
.article-share{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.87rem;
  color:var(--c-muted);
}
.share-icon{
  width:34px;
  height:34px;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-border);
  border-radius:8px;
  color:var(--c-text);
  transition:all .2s;
}
.share-icon:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:var(--c-secondary);
}
.share-icon svg{width:15px;height:15px;stroke-width:1.8;}
/* 上一篇 下一篇 */
.post-pagination{
  display:flex;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}
.post-pager{
  flex:1;
  background:var(--c-alt);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:16px 20px;
  text-decoration:none;
  transition:all .25s;
  min-width:0;
}
.post-pager:hover{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:var(--shadow-md);
}
.post-pager span{
  display:block;
  font-size:.8rem;
  color:var(--c-muted);
  margin-bottom:4px;
}
.post-pager strong{
  display:block;
  font-size:.95rem;
  color:var(--c-dark);
  font-weight:500;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  transition:color .2s;
}
.post-pager:hover strong{color:var(--c-primary);}
.post-pager.next{text-align:right;}

/* 侧边栏 */
.article-sidebar{
  position:sticky;
  top:90px;
}
.sidebar-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow-sm);
  margin-bottom:24px;
}
.sidebar-card h3{
  font-size:1.05rem;
  font-weight:600;
  color:var(--c-dark);
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:2px solid var(--c-border);
  position:relative;
}
.sidebar-card h3::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-2px;
  width:32px;
  height:2px;
  background:var(--c-primary);
}
.side-cat-list{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.side-cat-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 0;
  color:var(--c-text);
  font-size:.92rem;
  border-radius:6px;
  text-decoration:none;
  transition:all .2s;
}
.side-cat-list a::before{
  content:'';
  width:6px;
  height:6px;
  background:var(--c-primary);
  border-radius:2px;
  flex-shrink:0;
  opacity:.5;
  transition:opacity .2s;
}
.side-cat-list a:hover{
  color:var(--c-primary);
  background:var(--c-secondary);
  padding-left:8px;
}
.side-cat-list a:hover::before{opacity:1;}
.hot-list{
  list-style:none;
  padding:0;
  margin:0;
  counter-reset:hot;
}
.hot-list li{
  counter-increment:hot;
  padding:12px 0;
  border-bottom:1px solid var(--c-border);
}
.hot-list li:last-child{border-bottom:none;}
.hot-list a{
  display:block;
  font-size:.92rem;
  color:var(--c-dark);
  font-weight:500;
  line-height:1.5;
  text-decoration:none;
  transition:color .2s;
  padding-left:34px;
  position:relative;
}
.hot-list a::before{
  content:counter(hot, decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-size:.78rem;
  font-weight:700;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
}
.hot-list a:hover{color:var(--c-primary);}
.hot-list .hot-date{
  display:block;
  font-size:.78rem;
  color:var(--c-muted);
  margin-top:3px;
  padding-left:34px;
}
.tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.tag-cloud a{
  display:inline-block;
  padding:5px 14px;
  background:var(--c-secondary);
  border:1px solid var(--c-border);
  color:var(--c-text);
  font-size:.82rem;
  border-radius:6px;
  text-decoration:none;
  transition:all .2s;
}
.tag-cloud a:hover{
  background:rgba(45,108,223,.08);
  border-color:var(--c-primary);
  color:var(--c-primary);
}
.sidebar-img-card{
  border:none;
  padding:0;
  overflow:hidden;
}
.sidebar-img-card img{
  width:100%;
  height:auto;
  display:block;
}
.sidebar-img-card .img-body{
  padding:16px 20px 20px;
}
.sidebar-img-card h3{
  border:none;
  padding-bottom:4px;
  margin-bottom:8px;
  font-size:1rem;
}
.sidebar-img-card h3::after{display:none;}
.sidebar-img-card p{
  font-size:.85rem;
  line-height:1.6;
  color:var(--c-muted);
  margin-bottom:10px;
}
.sidebar-img-card a.img-cta{
  font-size:.85rem;
  font-weight:500;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:4px;
  text-decoration:none;
}
.sidebar-img-card a.img-cta:hover{color:var(--c-primary-dark);}
.sidebar-img-card a.img-cta .arrow{transition:transform .2s;}
.sidebar-img-card a.img-cta:hover .arrow{transform:translateX(4px);}

/* 相关推荐 */
.related-section{
  background:var(--c-alt);
  border-top:1px solid var(--c-border);
  padding:64px 0 80px;
}
.section-head{
  text-align:center;
  margin-bottom:40px;
}
.section-label{
  display:inline-block;
  font-size:.78rem;
  letter-spacing:.12em;
  color:var(--c-muted);
  text-transform:uppercase;
  margin-bottom:8px;
  font-weight:500;
}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:700;
  color:var(--c-dark);
  margin:0;
}
.section-head p{
  color:var(--c-muted);
  font-size:.95rem;
  margin-top:12px;
  max-width:560px;
  margin-right:auto;
  margin-left:auto;
}
.post-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  height:100%;
  transition:all .3s ease;
  display:flex;
  flex-direction:column;
}
.post-card:hover{
  border-color:#C2D6F2;
  box-shadow:var(--shadow-md);
}
.post-card .card-thumb{
  width:100%;
  height:190px;
  object-fit:cover;
  display:block;
  transition:transform .4s ease;
}
.post-card:hover .card-thumb{transform:scale(1.03);}
.post-card .card-img-wrap{
  overflow:hidden;
  position:relative;
}
.post-card .card-body{
  padding:20px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.post-card .card-tag{
  margin-bottom:10px;
  align-self:flex-start;
  padding:3px 12px;
  font-size:.75rem;
}
.post-card h3{
  font-size:1.15rem;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
  color:var(--c-dark);
}
.post-card h3 a{
  color:inherit;
  text-decoration:none;
  transition:color .2s;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card h3 a:hover{color:var(--c-primary);}
.post-card .card-excerpt{
  font-size:.9rem;
  color:var(--c-muted);
  line-height:1.65;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  flex:1;
}
.post-card .card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:auto;
}
.post-card .card-date{
  font-size:.8rem;
  color:var(--c-muted);
  display:inline-flex;
  align-items:center;
  gap:5px;
}
.post-card .card-date svg{width:13px;height:13px;}
.post-card .read-more{
  font-size:.85rem;
  font-weight:500;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:4px;
  text-decoration:none;
}
.post-card .read-more .arrow{transition:transform .2s;}
.post-card .read-more:hover .arrow{transform:translateX(4px);}

/* 内容未找到 */
.article-not-found{
  text-align:center;
  padding:80px 24px;
  background:var(--c-alt);
  border:1px dashed var(--c-border);
  border-radius:var(--radius);
  margin:24px 0 40px;
}
.article-not-found h1{
  font-size:1.8rem;
  color:var(--c-dark);
  margin-bottom:12px;
}
.article-not-found p{
  color:var(--c-muted);
  margin-bottom:24px;
}
.article-not-found .btn{
  margin:4px;
}

/* 回到顶部 */
.back-to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;
  height:46px;
  border-radius:10px;
  border:none;
  background:rgba(30,42,68,.75);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  z-index:999;
  opacity:0;
  visibility:hidden;
  transition:all .3s ease;
}
.back-to-top.show{
  opacity:1;
  visibility:visible;
}
.back-to-top:hover{
  background:var(--c-primary);
}
.back-to-top svg{width:18px;height:18px;}

/* 页脚 */
.site-footer{
  background:#1E2A44;
  color:#C6CFDC;
  padding-top:60px;
  font-size:.92rem;
}
.footer-main{
  padding-bottom:40px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.footer-logo .logo-mark{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.1);
  color:#fff;
  width:40px;
  height:40px;
}
.footer-desc{
  color:#9AA7B8;
  font-size:.9rem;
  line-height:1.7;
  margin-bottom:20px;
  max-width:320px;
}
.footer-social{
  display:flex;
  gap:10px;
}
.footer-social a{
  width:38px;
  height:38px;
  border-radius:8px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  color:rgba(255,255,255,.7);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all .25s;
}
.footer-social a:hover{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.footer-social svg{
  width:17px;
  height:17px;
}
.site-footer h4{
  color:#fff;
  font-size:.98rem;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:#9AA7B8;
  text-decoration:none;
  font-size:.9rem;
  transition:all .2s;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-links a::before{
  content:'';
  width:3px;
  height:3px;
  background:var(--c-primary);
  border-radius:50%;
  opacity:.7;
}
.footer-links a:hover{
  color:#fff;
  padding-left:2px;
}
.footer-info p{
  margin-bottom:8px;
  color:#9AA7B8;
}
.footer-info a{
  color:#C6CFDC;
  text-decoration:none;
}
.footer-info a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:.84rem;
  color:#7B879A;
  flex-wrap:wrap;
}
.footer-bottom a{
  color:#9AA7B8;
  text-decoration:none;
  margin-left:18px;
}
.footer-bottom a:hover{color:#fff;}
/* 响应式 */
@media(max-width:991.98px){
  .section{padding:64px 0;}
  .article-sidebar{margin-top:40px;position:static;}
  .post-pagination{flex-direction:column;}
  .post-pager.next{text-align:left;}
  .header-cta{display:none;}
}
@media(max-width:767.98px){
  .section{padding:48px 0;}
  .article-page{padding:24px 0 48px;}
  .article-header h1{font-size:1.45rem;line-height:1.3;}
  .article-body{font-size:1rem;line-height:1.75;}
  .article-meta{gap:12px;flex-direction:column;gap:6px;}
  .article-footer{flex-direction:column;align-items:flex-start;}
  .post-card .card-thumb{height:170px;}
}
@media(max-width:575.98px){
  .header-inner{padding:10px 12px;}
  .brand-logo{font-size:1.1rem;}
  .logo-mark{width:32px;height:32px;border-radius:8px;}
  .logo-mark svg{width:17px;height:17px;}
  .header-search{height:42px;padding:0 14px;}
  .breadcrumb-list{font-size:.8rem;}
  .article-body blockquote{padding:12px 16px;}
  .post-pager{padding:12px 14px;}
  .post-pager strong{font-size:.87rem;}
  .footer-bottom{flex-direction:column;text-align:center;}
}