/* roulang page: index */
:root {
  --primary: #1e293b;
  --primary-light: #334155;
  --accent: #c9a227;
  --accent-hover: #b3911f;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(30, 41, 59, 0.08);
  --shadow-lg: 0 12px 40px rgba(30, 41, 59, 0.15);
  --transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 840px; margin: 0 auto; padding: 0 24px; }

/* 悬浮胶囊导航 */
.floating-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - 32px);
  max-width: 1100px;
  background: rgba(30, 41, 59, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 60px;
  padding: 10px 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.floating-nav .logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  padding: 4px 16px;
  background: linear-gradient(135deg, var(--accent), #e8c76a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.floating-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.floating-nav .nav-links a {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.82);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.floating-nav .nav-links a:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.floating-nav .nav-links a.active {
  background: var(--accent);
  color: #1e293b;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}
.floating-nav .nav-cta {
  background: var(--accent);
  color: var(--primary);
  padding: 8px 24px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}
.floating-nav .nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.floating-nav .menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.93), rgba(30, 41, 59, 0.72)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(201, 162, 39, 0.18);
  border: 1px solid rgba(201, 162, 39, 0.4);
  border-radius: 40px;
  font-size: 0.85rem;
  color: #f0d378;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: linear-gradient(120deg, #fff 55%, #f0d378);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero h1 .hero-line { display: block; }
.hero-desc {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 6px 24px rgba(201, 162, 39, 0.35);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 10px 32px rgba(201, 162, 39, 0.45); }
.btn-outline-light {
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.6); transform: translateY(-3px); }
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.hero-stats .stat-item .stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.hero-stats .stat-item .stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.04em;
}

/* 板块通用 */
.section {
  padding: 96px 0;
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(201, 162, 39, 0.12);
  color: var(--accent);
  border-radius: 40px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-weak);
  line-height: 1.7;
}
.section-light { background: var(--surface); }
.section-dark { background: var(--primary); color: #fff; }

/* 核心卡片 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: #fff;
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.feature-card .card-img { position: relative; overflow: hidden; height: 200px; }
.feature-card .card-img img { width: 100%; height: 100%; object-fit: cover; }
.feature-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30, 41, 59, 0.45), transparent);
}
.feature-card .card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.feature-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #e8c76a);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(201, 162, 39, 0.3);
}
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.feature-card p { font-size: 0.95rem; color: var(--text-weak); line-height: 1.65; flex: 1; }
.feature-card .card-link {
  margin-top: 20px;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
}
.feature-card .card-link:hover { gap: 12px; color: var(--accent-hover); }

/* 分类入口 */
.category-banner {
  background: linear-gradient(120deg, #1e293b 0%, #334155 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  box-shadow: 0 16px 48px rgba(30, 41, 59, 0.25);
}
.category-banner .cat-img { position: relative; min-height: 320px; }
.category-banner .cat-img img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.category-banner .cat-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 30%, rgba(30, 41, 59, 0.6));
}
.category-banner .cat-body {
  padding: 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  position: relative;
}
.category-banner .cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 6px 16px;
  background: rgba(201, 162, 39, 0.2);
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 40px;
  color: #f0d378;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.category-banner h3 { font-size: 1.8rem; font-weight: 800; margin-bottom: 14px; }
.category-banner p { font-size: 1rem; opacity: 0.85; margin-bottom: 28px; line-height: 1.7; }
.category-banner .btn { align-self: flex-start; }

/* 最新资讯列表 */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
}
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex;
  gap: 20px;
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  transition: var(--transition);
  align-items: flex-start;
}
.news-item:hover {
  box-shadow: var(--shadow);
  transform: translateX(4px);
  border-color: rgba(201, 162, 39, 0.3);
}
.news-item .news-thumb {
  width: 180px;
  height: 120px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: #eef2f7;
}
.news-item .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-item .news-body { flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.news-badge {
  padding: 3px 14px;
  background: rgba(201, 162, 39, 0.12);
  color: #a3821e;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}
.news-date {
  color: var(--text-weak);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
  line-height: 1.45;
  transition: var(--transition);
}
.news-item h3 a:hover { color: var(--accent); }
.news-item p {
  font-size: 0.9rem;
  color: var(--text-weak);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.hot-list { list-style: none; }
.hot-list li { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--border); align-items: flex-start; }
.hot-list li:last-child { border-bottom: none; }
.hot-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: #cbd5e1;
  line-height: 1.4;
  min-width: 24px;
}
.hot-list li:first-child .hot-num { color: var(--accent); }
.hot-list li:nth-child(2) .hot-num { color: var(--accent); }
.hot-list li a { font-size: 0.92rem; font-weight: 500; color: var(--text); line-height: 1.5; }
.hot-list li a:hover { color: var(--accent); }

/* 流程 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.step-card {
  text-align: center;
  padding: 36px 24px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
  position: relative;
}
.step-card:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-6px); }
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #e8c76a);
  color: var(--primary);
  font-size: 1.3rem;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(201, 162, 39, 0.35);
}
.step-card h3 { color: #fff; font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: rgba(255, 255, 255, 0.6); font-size: 0.88rem; line-height: 1.6; }

/* FAQ */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
details.faq-item summary {
  padding: 22px 28px;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 16px;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary i { color: var(--accent); transition: var(--transition); font-size: 1rem; flex-shrink: 0; }
details.faq-item[open] summary i { transform: rotate(180deg); }
details.faq-item .faq-answer {
  padding: 0 28px 22px;
  color: var(--text-weak);
  font-size: 0.95rem;
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  margin-top: 0;
  padding-top: 16px;
}

/* CTA */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #fff;
  text-align: center;
  padding: 100px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.05rem; opacity: 0.75; max-width: 560px; margin: 0 auto 36px; }

/* 页脚 */
footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.75);
  padding: 80px 0 32px;
  margin-top: 96px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo { font-size: 1.6rem; font-weight: 800; color: var(--accent); margin-bottom: 16px; }
.footer-brand p { font-size: 0.92rem; color: rgba(255, 255, 255, 0.5); line-height: 1.7; max-width: 320px; }
.footer-col h4 {
  font-size: 1rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 0.9rem; color: rgba(255, 255, 255, 0.6); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .tech-links { display: flex; gap: 20px; }

/* 响应式 */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .category-banner { grid-template-columns: 1fr; }
  .category-banner .cat-img { min-height: 240px; }
  .category-banner .cat-img img { position: relative; }
  .category-banner .cat-body { padding: 40px; }
}
@media (max-width: 768px) {
  .floating-nav { padding: 8px 12px; }
  .floating-nav .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 16px;
    gap: 8px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.3);
  }
  .floating-nav .nav-links.open { display: flex; }
  .floating-nav .nav-links a { width: 100%; justify-content: center; padding: 12px; }
  .floating-nav .nav-cta { display: none; }
  .floating-nav .menu-toggle { display: flex; }
  .hero { min-height: 80vh; padding: 100px 0 60px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .section { padding: 64px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .news-item { flex-direction: column; }
  .news-item .news-thumb { width: 100%; height: 180px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section-title { font-size: 1.7rem; }
  .category-banner .cat-body { padding: 28px; }
  .category-banner h3 { font-size: 1.4rem; }
  .news-item .news-thumb { height: 140px; }
  .faq-item summary { padding: 18px 20px; font-size: 0.95rem; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-2: #2d5a8e;
            --primary-dark: #142a45;
            --accent: #e89928;
            --accent-2: #f5b544;
            --bg-page: #f4f6f9;
            --bg-card: #ffffff;
            --text-main: #1f2937;
            --text-body: #3d4c5e;
            --text-weak: #6b7a8d;
            --border: #e3e8ef;
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-card: 0 8px 28px rgba(20, 42, 69, 0.07);
            --shadow-hover: 0 16px 36px rgba(20, 42, 69, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button {
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        ul,
        ol,
        li {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(30, 58, 95, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(20, 42, 69, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent);
            font-size: 20px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 6px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.82);
            transition: all var(--transition);
        }
        .nav-links a i {
            font-size: 13px;
        }
        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .nav-links a.active {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(232, 153, 40, 0.35);
        }
        .menu-toggle {
            display: none;
            font-size: 20px;
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .menu-toggle:hover,
        .menu-toggle:focus-visible {
            background: rgba(255, 255, 255, 0.2);
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 60px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(232, 153, 40, 0.12);
            color: var(--primary-2);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--primary-dark);
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ===== Hero ===== */
        .guide-hero {
            position: relative;
            padding: 120px 0 140px;
            background: linear-gradient(135deg, rgba(20, 42, 69, 0.96) 0%, rgba(30, 58, 95, 0.88) 60%, rgba(45, 90, 142, 0.82) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .guide-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            right: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(232, 153, 40, 0.12);
            filter: blur(40px);
            pointer-events: none;
        }
        .guide-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .guide-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.16);
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, 0.9);
        }
        .guide-hero .hero-badge i {
            color: var(--accent);
        }
        .guide-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            line-height: 1.2;
        }
        .guide-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 8px 16px;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-meta-item i {
            color: var(--accent);
            font-size: 13px;
        }

        /* ===== 快速入门 ===== */
        .steps-section {
            background: #fff;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            position: relative;
            background: var(--bg-page);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 24px 28px;
            text-align: center;
            transition: all var(--transition);
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 20px;
            box-shadow: 0 8px 20px rgba(30, 58, 95, 0.25);
        }
        .step-card h3 {
            font-size: 17px;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .step-arrow {
            position: absolute;
            top: 45%;
            right: -18px;
            font-size: 20px;
            color: var(--accent);
            z-index: 2;
        }

        /* ===== 功能模块卡片 ===== */
        .feature-section {
            background: var(--bg-page);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .feature-cover {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .feature-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .feature-card:hover .feature-cover img {
            transform: scale(1.04);
        }
        .feature-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(20, 42, 69, 0.25), transparent);
        }
        .feature-body {
            padding: 26px 26px 30px;
        }
        .feature-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-2);
            background: rgba(30, 58, 95, 0.08);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .feature-body h3 {
            font-size: 19px;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .feature-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-2);
            transition: gap var(--transition), color var(--transition);
        }
        .feature-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ===== 热门排行 ===== */
        .rank-section {
            background: #fff;
        }
        .rank-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-page);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            transition: all var(--transition);
        }
        .rank-item:hover {
            border-color: rgba(232, 153, 40, 0.5);
            box-shadow: var(--shadow-card);
        }
        .rank-index {
            font-size: 20px;
            font-weight: 800;
            color: var(--border);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-index {
            color: var(--accent);
        }
        .rank-item:nth-child(2) .rank-index {
            color: var(--primary-2);
        }
        .rank-item:nth-child(3) .rank-index {
            color: #b45309;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .rank-info p {
            font-size: 13px;
            color: var(--text-weak);
        }
        .rank-metric {
            font-size: 13px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            color: var(--text-weak);
            font-weight: 500;
            flex-shrink: 0;
        }
        .rank-side-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }
        .rank-side-card img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .rank-side-body {
            padding: 28px;
            background: #fff;
        }
        .rank-side-body h3 {
            font-size: 20px;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }
        .rank-side-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        /* ===== 图文精选 ===== */
        .tips-section {
            background: var(--primary-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .tips-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(232, 153, 40, 0.1);
            filter: blur(50px);
        }
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .tips-content {
            color: rgba(255, 255, 255, 0.9);
        }
        .tips-content .section-tag {
            background: rgba(232, 153, 40, 0.15);
            color: var(--accent-2);
        }
        .tips-content .section-title {
            color: #fff;
        }
        .tips-content .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        .tips-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .tips-list-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .tips-list-item i {
            color: var(--accent);
            font-size: 16px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .tips-list-item h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 4px;
        }
        .tips-list-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }
        .tips-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
        }
        .tips-visual img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-page);
        }
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 153, 40, 0.4);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            color: var(--primary-dark);
            gap: 16px;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 18px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-wrapper {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        .cta-wrapper h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-wrapper p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 15px;
            font-weight: 700;
            padding: 15px 38px;
            border-radius: 50px;
            box-shadow: 0 10px 30px rgba(232, 153, 40, 0.35);
            transition: all var(--transition);
        }
        .cta-btn:hover {
            background: var(--accent-2);
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(232, 153, 40, 0.4);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 22px;
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .tech-links {
            display: flex;
            gap: 20px;
        }
        .tech-links span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .tech-links i {
            color: rgba(232, 153, 40, 0.7);
        }

        /* ===== 移动端 ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .step-arrow {
                display: none;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rank-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 760px) {
            .container {
                padding: 0 18px;
            }
            .site-header {
                position: sticky;
            }
            .header-inner {
                height: 62px;
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                align-items: stretch;
                border-radius: 0;
                padding: 16px 18px;
                gap: 8px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.18);
                display: none;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 20px;
                border-radius: 14px;
                font-size: 15px;
            }
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .guide-hero {
                padding: 80px 0 90px;
            }
            .guide-hero h1 {
                font-size: 32px;
            }
            .guide-hero p {
                font-size: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .tech-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .tips-visual img {
                height: 260px;
            }
            .rank-item {
                flex-wrap: wrap;
                padding: 14px;
            }
            .rank-metric {
                margin-left: 56px;
            }
        }
        @media (max-width: 520px) {
            .hero-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .feature-cover {
                height: 170px;
            }
            .cta-wrapper h2 {
                font-size: 24px;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== 额外交互 ===== */
        :focus-visible {
            outline: 3px solid rgba(232, 153, 40, 0.6);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .btn-base {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-2);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30, 58, 95, 0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-2);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(232, 153, 40, 0.35);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
        }
        .btn-ghost:hover {
            border-color: var(--primary-2);
            color: var(--primary-2);
        }

/* roulang page: article */
:root {
    --primary: #16375a;
    --primary-light: #2b5b8a;
    --primary-dark: #0f2640;
    --accent: #f0782f;
    --accent-soft: #fff0e5;
    --bg: #f4f6f9;
    --card-bg: #ffffff;
    --text: #1c2a3a;
    --text-muted: #65748a;
    --border: #e3e8ef;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(20, 35, 60, 0.06);
    --shadow: 0 10px 30px rgba(20, 35, 60, 0.08);
    --shadow-lg: 0 16px 40px rgba(20, 35, 60, 0.13);
}
*, *::before, *::after { 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", "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
ul, ol, li { margin: 0; padding: 0; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.site-header {
    position: fixed;
    top: 18px;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 0 20px;
}
.header-shell {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 50px;
    padding: 10px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    box-shadow: 0 10px 36px rgba(20, 35, 60, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.7);
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 14px rgba(22, 55, 90, 0.3);
}
.brand-name {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}
.nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    border-radius: 40px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.25s ease;
    white-space: nowrap;
    border: 1px solid transparent;
}
.nav-links a i { font-size: 0.9rem; }
.nav-links a:hover {
    color: var(--primary);
    background: rgba(22, 55, 90, 0.06);
    transform: translateY(-1px);
}
.nav-links a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    box-shadow: 0 6px 18px rgba(22, 55, 90, 0.25);
}
.nav-links a:focus-visible {
    outline: 3px solid rgba(240, 120, 47, 0.5);
    outline-offset: 2px;
}

.article-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 140px 0 70px;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(15, 38, 64, 0.55), rgba(15, 38, 64, 0.75));
    z-index: 1;
}
.article-hero .container {
    position: relative;
    z-index: 2;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 18px;
}
.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.4); font-size: 0.75rem; }
.breadcrumb .current {
    color: #fff;
    font-weight: 600;
    max-width: 420px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.article-hero h1 {
    font-size: 2.2rem;
    line-height: 1.3;
    font-weight: 800;
    color: #fff;
    margin: 0 0 16px;
    max-width: 840px;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px);
    padding: 6px 16px;
    border-radius: 30px;
}
.article-meta i { color: var(--accent); }

.article-main {
    padding: 60px 0 70px;
}
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    align-items: start;
}
.article-content-wrap {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 44px 50px;
    border: 1px solid rgba(255, 255, 255, 0.8);
}
.article-body {
    font-size: 1.0625rem;
    color: var(--text);
    line-height: 1.9;
}
.article-body p {
    margin: 0 0 1.4rem;
}
.article-body h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    margin: 2.2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}
.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin: 1.8rem 0 0.8rem;
}
.article-body img {
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 1.5rem 0;
}
.article-body ul,
.article-body ol {
    padding-left: 1.6rem;
    margin: 0 0 1.4rem;
}
.article-body li {
    margin-bottom: 0.5rem;
}
.article-body a {
    color: var(--accent);
    font-weight: 600;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}
.article-body a:hover { border-bottom-color: var(--accent); }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--accent-soft);
    padding: 1rem 1.4rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-style: normal;
}
.article-body code {
    background: #f0f2f5;
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.92em;
    color: var(--primary);
}
.article-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-tags span {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-right: 4px;
}
.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 30px;
    background: #f1f4f8;
    border: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.2s ease;
}
.tag-chip:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(22, 55, 90, 0.2);
}
.article-not-found {
    text-align: center;
    padding: 70px 20px;
}
.article-not-found .nf-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 24px;
}
.article-not-found h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}
.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 28px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    box-shadow: 0 8px 24px rgba(22, 55, 90, 0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(22, 55, 90, 0.35);
}
.btn-accent {
    background: linear-gradient(135deg, var(--accent) 0%, #ff9a5a 100%);
    color: #fff;
    box-shadow: 0 8px 24px rgba(240, 120, 47, 0.3);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(240, 120, 47, 0.4);
}
.btn-outline-light {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
}
.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #fff;
    transform: translateY(-2px);
}

.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 110px;
}
.side-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 26px 28px;
    border: 1px solid rgba(255, 255, 255, 0.7);
}
.side-card h4 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--primary);
    margin: 0 0 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}
.side-card h4 i { color: var(--accent); }
.side-info-list {
    list-style: none;
}
.side-info-list li {
    display: flex;
    justify-content: space-between;
    padding: 9px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 0.92rem;
    color: var(--text-muted);
}
.side-info-list li:last-child { border-bottom: none; }
.side-info-list li span:first-child { font-weight: 500; }
.side-info-list li span:last-child { font-weight: 600; color: var(--text); text-align: right; }
.side-posts {
    list-style: none;
}
.side-post {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    transition: all 0.2s ease;
}
.side-post:last-child { border-bottom: none; padding-bottom: 0; }
.side-post:hover { transform: translateX(4px); }
.side-post-title {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    margin-bottom: 4px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.side-post-title:hover { color: var(--primary); }
.side-post-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.side-post-meta i { color: var(--accent); font-size: 0.75rem; }
.side-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 10px 0;
}
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.related-section {
    background: #fff;
    padding: 68px 0 80px;
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 34px;
}
.section-head h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    margin: 0;
}
.section-head p {
    color: var(--text-muted);
    margin: 6px 0 0;
    font-size: 0.95rem;
}
.section-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--accent);
    font-size: 0.9rem;
    padding: 8px 18px;
    border-radius: 30px;
    border: 1px solid var(--border);
    transition: all 0.2s;
    white-space: nowrap;
}
.section-link:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-2px);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.related-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(22, 55, 90, 0.15);
}
.related-card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}
.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img {
    transform: scale(1.05);
}
.related-card-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.related-card-body {
    padding: 22px 24px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.5;
    margin: 0 0 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card-body p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin: 0 0 16px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}
.related-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.related-card-meta i { color: var(--accent); }

.cta-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    right: -100px;
    top: -100px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: rgba(240, 120, 47, 0.15);
    filter: blur(60px);
}
.cta-section::after {
    content: '';
    position: absolute;
    left: -80px;
    bottom: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    filter: blur(50px);
}
.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.cta-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 12px;
    letter-spacing: 0.5px;
}
.cta-text p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1rem;
    max-width: 560px;
    margin: 0;
}
.cta-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.faq-section {
    padding: 70px 0 80px;
    background: var(--bg);
}
.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}
.faq-item {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow 0.25s ease;
}
.faq-item:hover {
    box-shadow: var(--shadow);
}
.faq-item details { padding: 0; }
.faq-item summary {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    padding: 20px 26px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary);
    list-style: none;
    transition: background 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    margin-left: auto;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--accent);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.faq-item details[open] summary::after {
    transform: rotate(45deg);
}
.faq-item summary .faq-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--accent);
    flex-shrink: 0;
}
.faq-item .faq-answer {
    padding: 0 26px 24px 76px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.75;
}

footer {
    background: #0f1c2e;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
    font-size: 0.92rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 50px;
    padding-bottom: 44px;
}
.footer-brand .logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand p {
    line-height: 1.75;
    max-width: 380px;
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
}
.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 18px;
    letter-spacing: 1px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s, padding-left 0.2s;
}
.footer-col ul a:hover {
    color: var(--accent);
    padding-left: 6px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.45);
}
.tech-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.tech-links span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.tech-links i { color: var(--accent); }

@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: minmax(0, 1fr);
        gap: 30px;
    }
    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .site-header {
        top: 12px;
        padding: 0 14px;
    }
    .header-shell {
        padding: 8px 14px;
        gap: 10px;
        flex-wrap: wrap;
    }
    .brand-name { font-size: 1.05rem; }
    .brand-icon { width: 36px; height: 36px; border-radius: 12px; font-size: 15px; }
    .nav-links {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 2px;
        justify-content: flex-start;
        gap: 8px;
    }
    .nav-links::-webkit-scrollbar { display: none; }
    .nav-links a {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    .article-hero {
        padding: 120px 0 50px;
    }
    .article-hero h1 {
        font-size: 1.6rem;
    }
    .article-content-wrap {
        padding: 28px 22px;
    }
    .article-body {
        font-size: 1rem;
    }
    .article-body h2 { font-size: 1.3rem; }
    .article-sidebar {
        grid-template-columns: 1fr;
    }
    .related-section {
        padding: 52px 0 60px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .cta-section {
        padding: 55px 0;
    }
    .cta-text h2 {
        font-size: 1.5rem;
    }
    .faq-section {
        padding: 52px 0 60px;
    }
    .faq-item summary {
        padding: 16px 20px;
    }
    .faq-item .faq-answer {
        padding: 0 20px 20px 66px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding-bottom: 30px;
    }
    .footer-brand { grid-column: auto; }
}

@media (max-width: 520px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .header-shell {
        border-radius: 30px;
    }
    .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 13px;
        border-radius: 10px;
    }
    .brand-name {
        font-size: 0.98rem;
    }
    .article-hero {
        padding: 105px 0 42px;
    }
    .article-hero h1 {
        font-size: 1.35rem;
    }
    .article-meta {
        gap: 10px;
    }
    .article-meta span {
        padding: 5px 12px;
        font-size: 0.82rem;
        gap: 6px;
    }
    .article-content-wrap {
        padding: 22px 18px;
        border-radius: 16px;
    }
    .breadcrumb {
        font-size: 0.8rem;
    }
    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .section-head h2 {
        font-size: 1.5rem;
    }
    .cta-text h2 {
        font-size: 1.3rem;
    }
    .cta-buttons {
        width: 100%;
        flex-direction: column;
    }
    .cta-buttons .btn {
        justify-content: center;
        width: 100%;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .tech-links {
        justify-content: center;
    }
}