/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #1e6b4c;
  --primary-light: #2d8a64;
  --primary-dark: #145237;
  --secondary: #e8c87a;
  --secondary-light: #f2dca0;
  --accent: #f5a623;
  --bg: #f9fbfa;
  --bg-alt: #f0f5f2;
  --bg-dark: #0f2b20;
  --text: #1a1a2e;
  --text-light: #5a6a62;
  --text-white: #f0f7f4;
  --border: #dce8e0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
  --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 76px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }
p { margin-bottom: 1rem; color: var(--text-light); }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.75); }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { margin-bottom: 12px; }
.section-title p { max-width: 600px; margin: 0 auto; font-size: 1.1rem; }
.tag { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; background: var(--primary); color: #fff; }
.tag-light { background: rgba(30,107,76,0.12); color: var(--primary); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px;
  border-radius: 50px; font-weight: 600; font-size: 1rem; transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: var(--secondary); color: var(--primary-dark); transform: translateY(-2px); }
.btn-lg { padding: 16px 42px; font-size: 1.1rem; }

/* ===== Header & Nav ===== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
  background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border); z-index: 1000; transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: center; height: 100%;
  position: relative;
}
.header-logo {
  position: absolute; left: 50%; transform: translateX(-50%);
  font-size: 1.5rem; font-weight: 800; color: var(--primary);
  letter-spacing: 1px; white-space: nowrap;
}
.header-logo span { color: var(--secondary); }
.header-logo:hover { color: var(--primary); }
.nav-left, .nav-right { display: flex; align-items: center; gap: 8px; }
.nav-left { margin-right: auto; }
.nav-right { margin-left: auto; }
.nav-link {
  padding: 8px 18px; border-radius: 50px; font-weight: 500; font-size: 0.95rem;
  color: var(--text-light); transition: var(--transition); position: relative;
}
.nav-link:hover { color: var(--primary); background: rgba(30,107,76,0.06); }
.nav-link.active { color: var(--primary); background: rgba(30,107,76,0.10); font-weight: 600; }
.menu-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 8px; cursor: pointer; z-index: 1001; }

/* ===== Hero ===== */
.hero {
  padding-top: var(--header-height); min-height: 88vh;
  display: flex; align-items: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0f2b20 0%, #1a4a35 50%, #0f2b20 100%);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.25; mix-blend-mode: overlay;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(ellipse at 30% 50%, rgba(30,107,76,0.3) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; max-width: 820px; margin: 0 auto; text-align: center; padding: 60px 24px; }
.hero-tag { display: inline-block; padding: 6px 20px; border-radius: 50px; background: rgba(232,200,122,0.2); color: var(--secondary); font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; border: 1px solid rgba(232,200,122,0.3); }
.hero h1 { color: #fff; font-size: 3.4rem; margin-bottom: 20px; line-height: 1.2; }
.hero h1 span { color: var(--secondary); }
.hero p { color: rgba(255,255,255,0.75); font-size: 1.2rem; max-width: 620px; margin: 0 auto 36px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-wave { position: absolute; bottom: -2px; left: 0; width: 100%; z-index: 2; line-height: 0; }
.hero-wave svg { width: 100%; height: auto; display: block; fill: var(--bg); }

/* ===== Intro ===== */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.intro-image img { width: 100%; height: 420px; object-fit: cover; }
.intro-text h2 { margin-bottom: 16px; }
.intro-text p { font-size: 1.05rem; margin-bottom: 16px; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.intro-feat { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--bg-alt); border-radius: var(--radius-sm); font-weight: 500; font-size: 0.95rem; }
.intro-feat i { color: var(--primary); font-size: 1.1rem; }

/* ===== Categories ===== */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.cat-card {
  border-radius: var(--radius-md); overflow: hidden; background: #fff;
  box-shadow: var(--shadow-sm); transition: var(--transition); cursor: pointer;
  border: 1px solid var(--border);
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.cat-card-image { height: 220px; overflow: hidden; position: relative; }
.cat-card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover .cat-card-image img { transform: scale(1.06); }
.cat-card-overlay { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,0.5) 0%, transparent 60%); }
.cat-card-tag { position: absolute; top: 16px; left: 16px; background: var(--primary); color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.cat-card-body { padding: 24px; }
.cat-card-body h3 { margin-bottom: 8px; font-size: 1.2rem; }
.cat-card-body p { font-size: 0.95rem; margin-bottom: 0; }
.cat-card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; font-weight: 600; color: var(--primary); font-size: 0.9rem; }

/* ===== News / CMS List ===== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card {
  display: flex; gap: 20px; background: #fff; border-radius: var(--radius-md);
  padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.news-card-image { width: 160px; min-height: 120px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; }
.news-card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-card-body h3 { font-size: 1.05rem; margin-bottom: 6px; line-height: 1.4; }
.news-card-body h3 a { color: var(--text); }
.news-card-body h3 a:hover { color: var(--primary); }
.news-card-meta { display: flex; align-items: center; gap: 14px; font-size: 0.82rem; color: var(--text-light); margin-top: 8px; }
.news-card-meta .cat { background: rgba(30,107,76,0.10); color: var(--primary); padding: 2px 10px; border-radius: 12px; font-weight: 500; }
.news-empty { text-align: center; padding: 60px 20px; color: var(--text-light); font-size: 1.05rem; grid-column: 1 / -1; }
.news-empty i { font-size: 2.4rem; color: var(--border); margin-bottom: 16px; display: block; }

/* ===== Stats ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat-item { padding: 32px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.10); transition: var(--transition); }
.stat-item:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
.stat-number { font-size: 3rem; font-weight: 800; color: var(--secondary); line-height: 1.2; margin-bottom: 4px; }
.stat-label { font-size: 1rem; color: rgba(255,255,255,0.7); font-weight: 400; }
.stat-icon { font-size: 2rem; color: rgba(232,200,122,0.5); margin-bottom: 12px; }

/* ===== Knowledge ===== */
.know-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.know-card {
  border-radius: var(--radius-md); overflow: hidden; background: #fff;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: var(--transition);
}
.know-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.know-card-image { height: 190px; overflow: hidden; }
.know-card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.know-card:hover .know-card-image img { transform: scale(1.05); }
.know-card-body { padding: 22px; }
.know-card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.know-card-body p { font-size: 0.9rem; margin-bottom: 12px; }
.know-card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--border); font-size: 0.85rem; color: var(--text-light); }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px;
  overflow: hidden; background: #fff; transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--text);
  cursor: pointer; transition: var(--transition); background: none; width: 100%; text-align: left;
}
.faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 24px 18px; color: var(--text-light); line-height: 1.8; font-size: 0.95rem; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  text-align: center; padding: 80px 24px; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08; mix-blend-mode: overlay;
}
.cta-content { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
.cta-content h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .footer-logo { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 12px; display: inline-block; }
.footer-brand .footer-logo span { color: var(--secondary); }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 320px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6);
  transition: var(--transition); font-size: 1.1rem;
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); }
.footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--secondary); }

/* ===== Back to Top ===== */
.back-top {
  position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px;
  border-radius: 50%; background: var(--primary); color: #fff; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); cursor: pointer; z-index: 999;
  opacity: 0; visibility: hidden; transition: var(--transition); border: none;
}
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-light); transform: translateY(-4px); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-image img { height: 300px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .know-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 768px) {
  :root { --header-height: 66px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .section { padding: 56px 0; }
  .header-logo { font-size: 1.2rem; position: relative; left: auto; transform: none; margin: 0 auto; }
  .header-inner { display: flex; justify-content: space-between; }
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: block; }
  .mobile-nav-open .nav-left,
  .mobile-nav-open .nav-right {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    position: fixed; top: var(--header-height); left: 0; width: 100%;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(16px);
    padding: 20px 24px; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--border);
  }
  .mobile-nav-open .nav-left { z-index: 1002; padding-bottom: 8px; }
  .mobile-nav-open .nav-right { z-index: 1001; padding-top: 0; top: calc(var(--header-height) + 80px); }
  .nav-link { font-size: 1rem; padding: 12px 24px; width: 100%; text-align: center; }
  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .cat-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-card-image { width: 100%; height: 180px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-number { font-size: 2.2rem; }
  .know-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 56px 24px; }
  .cta-content h2 { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  .footer-brand p { max-width: 100%; }
  .footer-social { justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .cat-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-lg { padding: 14px 32px; }
  .intro-features { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 20px 12px; }
  .stat-number { font-size: 1.8rem; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5c3a;
            --primary-light: #2d8a5a;
            --primary-dark: #0f3d26;
            --secondary: #e8b84b;
            --secondary-light: #f0d080;
            --accent: #d4553a;
            --bg-body: #f7f5f0;
            --bg-card: #ffffff;
            --bg-dark: #1a2e24;
            --bg-warm: #f0ebe0;
            --text-dark: #1e2a22;
            --text-body: #3d4a42;
            --text-muted: #7a8a7e;
            --text-light: #c8d5cc;
            --border-light: #e5e8e0;
            --border-med: #d0d8d0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 44, 36, 0.06);
            --shadow-md: 0 8px 28px rgba(26, 44, 36, 0.10);
            --shadow-lg: 0 18px 48px rgba(26, 44, 36, 0.14);
            --shadow-hover: 0 14px 36px rgba(26, 44, 36, 0.18);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition: 0.28s cubic-bezier(0.22, 1, 0.36, 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: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        ul { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input,
        textarea { font-family: inherit; font-size: 1rem; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 1.9rem; }
        h3 { font-size: 1.45rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== 导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(247, 245, 240, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled { background: rgba(247, 245, 240, 0.98); box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--nav-height); max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .nav-left,
        .nav-right { display: flex; align-items: center; gap: 6px; }
        .nav-link {
            display: inline-flex; align-items: center; padding: 8px 18px;
            font-size: 0.95rem; font-weight: 500; color: var(--text-body);
            border-radius: var(--radius-sm); transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .nav-link:hover { color: var(--primary); background: rgba(26, 92, 58, 0.06); }
        .nav-link.active { color: var(--primary); background: rgba(26, 92, 58, 0.10); font-weight: 600; }
        .nav-logo {
            font-size: 1.5rem; font-weight: 800; color: var(--text-dark);
            letter-spacing: -0.02em; display: flex; align-items: center; gap: 6px;
            transition: opacity var(--transition);
        }
        .nav-logo:hover { opacity: 0.78; color: var(--text-dark); }
        .nav-logo span { color: var(--primary); }
        .nav-toggle {
            display: none; font-size: 1.5rem; color: var(--text-dark);
            padding: 8px; border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(26, 92, 58, 0.08); }

        /* ===== 移动端导航 ===== */
        @media (max-width: 820px) {
            .nav-left,
            .nav-right { display: none; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
            .mobile-nav-open .nav-left,
            .mobile-nav-open .nav-right {
                display: flex; flex-direction: column; align-items: stretch;
                position: absolute; top: var(--nav-height); left: 0; right: 0;
                background: rgba(247, 245, 240, 0.98);
                backdrop-filter: blur(14px);
                border-bottom: 1px solid var(--border-light);
                padding: 12px 24px 20px; gap: 4px;
                box-shadow: var(--shadow-md);
            }
            .mobile-nav-open .nav-left .nav-link,
            .mobile-nav-open .nav-right .nav-link { padding: 12px 16px; font-size: 1.05rem; }
        }

        /* ===== 文章页 Banner ===== */
        .article-banner {
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.22;
            mix-blend-mode: overlay;
        }
        .article-banner::after {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26, 46, 36, 0.88) 0%, rgba(26, 46, 36, 0.60) 100%);
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex; align-items: center; gap: 8px;
            font-size: 0.9rem; color: var(--text-light); margin-bottom: 18px;
        }
        .article-banner .breadcrumb a { color: var(--secondary-light); }
        .article-banner .breadcrumb a:hover { color: var(--secondary); }
        .article-banner .breadcrumb span { color: var(--text-light); }
        .article-banner h1 {
            font-size: 2.6rem; color: #fff; max-width: 860px;
            margin-bottom: 16px; line-height: 1.25; text-shadow: 0 2px 12px rgba(0,0,0,0.18);
        }
        .article-meta {
            display: flex; flex-wrap: wrap; align-items: center; gap: 18px 30px;
            color: var(--text-light); font-size: 0.95rem;
        }
        .article-meta .badge {
            display: inline-block; padding: 4px 16px; border-radius: 20px;
            background: var(--secondary); color: var(--text-dark);
            font-size: 0.82rem; font-weight: 600; letter-spacing: 0.03em;
        }
        .article-meta i { margin-right: 6px; opacity: 0.7; }

        /* ===== 文章正文 ===== */
        .article-main { padding: 60px 0 80px; }
        .article-content {
            max-width: 800px; margin: 0 auto;
            background: var(--bg-card); border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm); padding: 48px 56px;
            border: 1px solid var(--border-light);
        }
        .article-content .post-body {
            font-size: 1.1rem; line-height: 1.9; color: var(--text-body);
        }
        .article-content .post-body p { margin-bottom: 1.4em; }
        .article-content .post-body h2,
        .article-content .post-body h3 { margin-top: 1.8em; margin-bottom: 0.6em; }
        .article-content .post-body img {
            border-radius: var(--radius-md); margin: 1.6em 0;
            box-shadow: var(--shadow-sm); width: 100%;
        }
        .article-content .post-body blockquote {
            border-left: 4px solid var(--primary); background: var(--bg-warm);
            padding: 18px 24px; margin: 1.6em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic; color: var(--text-dark);
        }
        .article-content .post-body ul,
        .article-content .post-body ol { margin: 1em 0 1.4em 1.8em; }
        .article-content .post-body li { margin-bottom: 0.5em; }
        .article-content .post-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content .post-body a:hover { color: var(--primary-light); }

        .article-footer-meta {
            margin-top: 38px; padding-top: 28px;
            border-top: 1px solid var(--border-light);
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            gap: 16px;
        }
        .article-footer-meta .tags {
            display: flex; flex-wrap: wrap; gap: 8px;
        }
        .article-footer-meta .tags .tag {
            padding: 4px 14px; border-radius: 20px; background: var(--bg-warm);
            font-size: 0.85rem; color: var(--text-body); border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .article-footer-meta .tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .article-footer-meta .share { display: flex; align-items: center; gap: 10px; }
        .article-footer-meta .share a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: var(--bg-warm); color: var(--text-body);
            font-size: 1.1rem; transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-footer-meta .share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== 相关文章 ===== */
        .related-section { padding: 0 0 80px; }
        .related-section h2 {
            font-size: 1.6rem; margin-bottom: 32px; text-align: center;
        }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .related-card .card-img {
            height: 180px; background: var(--bg-warm); overflow: hidden;
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body .cat-tag {
            display: inline-block; padding: 2px 14px; border-radius: 16px;
            background: rgba(26, 92, 58, 0.08); color: var(--primary);
            font-size: 0.78rem; font-weight: 600; margin-bottom: 10px;
        }
        .related-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--text-dark); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
        .related-card .card-body .date { font-size: 0.82rem; color: var(--text-muted); margin-top: 12px; display: block; }

        /* ===== 未找到文章 ===== */
        .not-found-wrap {
            text-align: center; padding: 80px 24px;
        }
        .not-found-wrap .icon { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-wrap h2 { font-size: 2rem; margin-bottom: 12px; }
        .not-found-wrap p { color: var(--text-muted); margin-bottom: 24px; font-size: 1.1rem; }
        .not-found-wrap .btn { display: inline-block; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 12px 32px; border-radius: var(--radius-sm);
            font-size: 1rem; font-weight: 600; letter-spacing: 0.02em;
            transition: all var(--transition); border: none;
            background: var(--primary); color: #fff;
        }
        .btn:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent; color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; }
        .btn-sm { padding: 8px 20px; font-size: 0.9rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; border-radius: var(--radius-md); }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark); color: var(--text-light);
            padding: 64px 0 0;
            border-top: 4px solid var(--primary);
        }
        .footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .footer-logo {
            font-size: 1.6rem; font-weight: 800; color: #fff;
            display: inline-block; margin-bottom: 14px;
        }
        .footer-brand .footer-logo span { color: var(--secondary); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; color: var(--text-light); margin-bottom: 18px; max-width: 360px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 42px; height: 42px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: var(--text-light);
            font-size: 1.15rem; transition: all var(--transition);
            border: 1px solid rgba(255,255,255,0.08);
        }
        .footer-social a:hover { background: var(--secondary); color: var(--text-dark); transform: translateY(-3px); }
        .footer h4 {
            color: #fff; font-size: 1.05rem; font-weight: 700;
            margin-bottom: 18px; letter-spacing: 0.04em;
        }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a {
            color: var(--text-light); font-size: 0.9rem;
            transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px;
        }
        .footer ul li a:hover { color: var(--secondary); transform: translateX(4px); }
        .footer ul li a i { width: 18px; text-align: center; font-size: 0.85rem; opacity: 0.6; }
        .footer-bottom {
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            padding: 22px 0; margin-top: 0;
            font-size: 0.85rem; color: var(--text-light);
            gap: 12px;
        }
        .footer-bottom a { color: var(--text-light); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 820px) {
            .article-banner h1 { font-size: 1.9rem; }
            .article-content { padding: 32px 24px; }
            .article-content .post-body { font-size: 1rem; }
            .article-banner { padding: 60px 0 40px; min-height: 260px; }
        }
        @media (max-width: 640px) {
            .article-banner h1 { font-size: 1.6rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 10px; }
            .article-content { padding: 24px 18px; border-radius: var(--radius-md); }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-banner { min-height: 220px; padding: 50px 0 30px; }
        }
        @media (max-width: 480px) {
            .article-banner h1 { font-size: 1.35rem; }
            .article-content .post-body { font-size: 0.95rem; }
            .article-content { padding: 18px 14px; }
            .btn-lg { padding: 14px 28px; font-size: 1rem; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a6b3c;
            --primary-dark: #0f4d2a;
            --primary-light: #3a9b5e;
            --primary-bg: #eaf7ee;
            --accent: #d4a843;
            --accent-light: #f5e6c8;
            --bg-white: #ffffff;
            --bg-warm: #f9f6f0;
            --bg-light: #f4f8f5;
            --bg-dark: #1a2e26;
            --text-dark: #1a2a20;
            --text-body: #2d3d33;
            --text-muted: #6b7d73;
            --text-light: #9aaba0;
            --border: #dce6df;
            --border-light: #edf3ef;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(26, 107, 60, 0.08);
            --shadow-md: 0 8px 40px rgba(26, 107, 60, 0.12);
            --shadow-lg: 0 16px 60px rgba(26, 107, 60, 0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --spacing-section: 80px;
            --spacing-block: 48px;
            --container: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-warm);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.25; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            height: 72px;
        }
        .header.scrolled { box-shadow: var(--shadow); background: rgba(255, 255, 255, 0.97); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-left { flex: 1; justify-content: flex-start; }
        .nav-right { flex: 1; justify-content: flex-end; }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 1px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 20px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo:hover { color: var(--primary); }
        .logo span { color: var(--primary); font-weight: 300; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-link:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover { background: var(--primary-bg); color: var(--primary); }

        /* ===== Mobile Nav Drawer ===== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            padding: 16px 24px 24px;
            z-index: 999;
            transform: translateY(-12px);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }
        .mobile-drawer.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            border-radius: var(--radius-sm);
        }
        .mobile-drawer .nav-link.active::after { display: none; }
        .mobile-drawer .nav-link.active { background: var(--primary-bg); color: var(--primary); }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .page-hero:hover .page-hero-bg { transform: scale(1); }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 46, 38, 0.85) 0%, rgba(26, 107, 60, 0.6) 100%);
        }
        .page-hero .container { position: relative; z-index: 2; }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 2px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .page-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .page-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            color: rgba(255,255,255,0.7);
            font-size: 14px;
        }
        .page-hero-meta i { margin-right: 6px; color: var(--accent); }

        /* ===== Section共用 ===== */
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--bg-white); }
        .section-warm { background: var(--bg-warm); }
        .section-green { background: var(--primary-bg); }
        .section-dark {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.85);
        }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            color: var(--text-dark);
        }
        .section-sub {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-dark .section-sub { color: rgba(255,255,255,0.65); }
        .section-center { text-align: center; }
        .section-center .section-sub { margin-left: auto; margin-right: auto; }

        /* ===== Grid / Cards ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: var(--bg-light);
        }
        .card-body { padding: 24px; }
        .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .card-body p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
            transition: var(--transition);
        }
        .card-link i { transition: var(--transition); }
        .card-link:hover i { transform: translateX(4px); }

        /* ===== 统计数字块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 28px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }

        /* ===== 图文区块 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
            background: var(--bg-light);
        }
        .feature-content h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .feature-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-list { margin-top: 16px; }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-light);
        }
        .feature-list li:last-child { border-bottom: none; }
        .feature-list li i { color: var(--primary); font-size: 16px; margin-top: 3px; flex-shrink: 0; }

        /* ===== 流程/步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .step-item p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question i { color: var(--primary); font-size: 14px; transition: var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-box h2 { font-size: 32px; color: #fff; margin-bottom: 12px; }
        .cta-box p { font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-box .container { position: relative; z-index: 2; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 107, 60, 0.3);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26, 107, 60, 0.4); color: #fff; }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
        }
        .btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
        }
        .btn-white:hover { background: var(--primary-bg); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.12); color: var(--primary-dark); }
        .btn-sm { padding: 10px 22px; font-size: 14px; }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-accent { background: var(--accent-light); color: var(--accent); }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px 0 24px;
        }
        .section-center .divider { margin-left: auto; margin-right: auto; }

        /* ===== 波形装饰 ===== */
        .wave-divider {
            width: 100%;
            height: 60px;
            display: block;
            fill: var(--bg-warm);
            margin-top: -2px;
        }
        .wave-divider-alt { fill: var(--bg-white); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-logo span { color: var(--primary-light); }
        .footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 16px; color: rgba(255,255,255,0.6); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer ul li a:hover { color: #fff; padding-left: 4px; }
        .footer ul li a i { font-size: 14px; color: var(--primary-light); width: 16px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .page-hero h1 { font-size: 38px; }
        }
        @media (max-width: 820px) {
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .grid-2 { grid-template-columns: 1fr; }
            .feature-row { grid-template-columns: 1fr; gap: 32px; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .section-title { font-size: 28px; }
            .page-hero { padding: 120px 0 60px; min-height: 300px; }
            .page-hero h1 { font-size: 32px; }
            :root { --spacing-section: 60px; }
        }
        @media (max-width: 640px) {
            .header-inner { padding: 0 4px; }
            .nav-left .nav-link, .nav-right .nav-link { display: none; }
            .mobile-toggle { display: flex; align-items: center; justify-content: center; }
            .mobile-drawer { display: block; }
            .grid-3 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .page-hero h1 { font-size: 26px; }
            .page-hero p { font-size: 15px; }
            .section-title { font-size: 24px; }
            .cta-box { padding: 36px 20px; }
            .cta-box h2 { font-size: 24px; }
            .stat-number { font-size: 30px; }
            :root { --spacing-section: 48px; --spacing-block: 32px; }
            .container { padding: 0 16px; }
            .card-body { padding: 18px; }
            .feature-content h3 { font-size: 20px; }
            .logo { font-size: 18px; padding: 0 12px; }
            .faq-question { padding: 14px 16px; font-size: 15px; }
            .faq-answer { padding: 0 16px 14px; }
        }
        @media (max-width: 420px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item { padding: 20px 12px; }
            .stat-number { font-size: 26px; }
            .btn { padding: 12px 24px; font-size: 14px; }
            .page-hero h1 { font-size: 22px; }
            .logo { font-size: 16px; padding: 0 8px; }
        }

        /* ===== 工具类 ===== */
        .gap-8 { gap: 8px; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .text-center { text-align: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }