/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0d0d1a;
  --primary-light: #1a1a30;
  --primary-mid: #252545;
  --accent: #d4a030;
  --accent-hover: #e8b84a;
  --accent-glow: rgba(212, 160, 48, 0.25);
  --bg-body: #08080f;
  --bg-card: #12121f;
  --bg-section: #0f0f1a;
  --bg-card-hover: #1c1c32;
  --text-white: #f0f0f5;
  --text-light: #b8b8d0;
  --text-muted: #6a6a8a;
  --border-color: #2a2a4a;
  --border-glow: rgba(212, 160, 48, 0.12);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.6);
  --shadow-accent: 0 4px 20px rgba(212, 160, 48, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
}

/* ===== 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);
  background: var(--bg-body);
  color: var(--text-light);
  line-height: 1.7;
  font-size: 16px;
}
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--accent-hover); outline: none; }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; transition: var(--transition); }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-white); font-weight: 700; line-height: 1.3; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
::selection { background: var(--accent); color: #000; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

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

/* ===== Header & Nav ===== */
.topbar {
  background: rgba(8,8,15,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px 16px; }
.topbar a { color: var(--text-muted); margin: 0 8px; }
.topbar a:hover { color: var(--accent); }
.topbar .domain { color: var(--text-light); font-weight: 500; }

.header-main {
  background: rgba(13,13,26,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky; top: 0; z-index: 1000;
  height: var(--header-height);
  display: flex; align-items: center;
}
.header-main .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--text-white); letter-spacing: -0.5px; display: flex; align-items: center; gap: 10px; }
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo:hover { color: var(--accent); }
.logo span { color: var(--accent); }

.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-list a {
  display: block; padding: 8px 18px; border-radius: var(--radius-sm);
  color: var(--text-light); font-weight: 500; font-size: 0.92rem;
  transition: var(--transition); position: relative;
}
.nav-list a:hover { color: var(--text-white); background: var(--primary-mid); }
.nav-list a.active { color: var(--accent); background: rgba(212,160,48,0.08); }
.nav-list a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--accent); border-radius: 2px; }
.nav-cta {
  background: var(--accent) !important; color: #0d0d1a !important;
  padding: 8px 22px !important; border-radius: var(--radius-sm) !important;
  font-weight: 700 !important; font-size: 0.85rem !important;
}
.nav-cta:hover { background: var(--accent-hover) !important; color: #0d0d1a !important; box-shadow: var(--shadow-accent); transform: translateY(-1px); }

.mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-white); background: none; border: none; padding: 6px; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 70vh; display: flex; align-items: center;
  background: linear-gradient(135deg, #08080f 0%, #12121f 40%, #1a1a30 100%);
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.15; mix-blend-mode: screen;
}
.hero::after {
  content: ''; position: absolute; top: -30%; right: -15%; width: 70%; height: 120%;
  background: radial-gradient(ellipse at center, rgba(212,160,48,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; text-align: center; padding: 60px 24px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(212,160,48,0.1); border: 1px solid rgba(212,160,48,0.2);
  padding: 6px 18px; border-radius: 50px; font-size: 0.82rem; color: var(--accent);
  margin-bottom: 24px; letter-spacing: 0.5px;
}
.hero-badge i { font-size: 0.7rem; }
.hero h1 { margin-bottom: 20px; background: linear-gradient(135deg, #f0f0f5 0%, var(--accent) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: clamp(1rem, 2vw, 1.2rem); max-width: 680px; margin: 0 auto 36px; color: var(--text-light); }
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: none; }
.btn-primary { background: var(--accent); color: #0d0d1a; box-shadow: var(--shadow-accent); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,160,48,0.3); color: #0d0d1a; }
.btn-outline { background: transparent; color: var(--text-white); border: 1px solid var(--border-color); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,160,48,0.05); transform: translateY(-2px); }
.hero-stats { display: flex; justify-content: center; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--text-white); }
.hero-stat .num span { color: var(--accent); }
.hero-stat .label { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }

/* ===== Section ===== */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-section); }
.section-card { background: var(--bg-card); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-header h2 { margin-bottom: 14px; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; }
.section-tag {
  display: inline-block; background: rgba(212,160,48,0.08); border: 1px solid rgba(212,160,48,0.15);
  padding: 4px 16px; border-radius: 50px; font-size: 0.78rem; color: var(--accent);
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px;
}

/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ===== Cards ===== */
.card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 28px 24px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.card:hover { border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-lg); background: var(--bg-card-hover); }
.card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); background: rgba(212,160,48,0.08); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--accent); margin-bottom: 18px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }
.card-link { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-weight: 500; font-size: 0.88rem; }
.card-link i { font-size: 0.75rem; transition: var(--transition); }
.card-link:hover i { transform: translateX(4px); }

/* ===== Feature Cards ===== */
.feature-card { text-align: center; padding: 36px 24px; }
.feature-card .card-icon { margin: 0 auto 18px; width: 64px; height: 64px; border-radius: 50%; font-size: 1.6rem; }

/* ===== Guide Entry ===== */
.guide-entry {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--primary-mid) 100%);
  border: 1px solid var(--border-glow); border-radius: var(--radius-lg);
  padding: 48px 40px; display: flex; align-items: center; gap: 48px;
  overflow: hidden; position: relative;
}
.guide-entry::before { content: ''; position: absolute; top: -50%; right: -20%; width: 60%; height: 200%; background: radial-gradient(ellipse, rgba(212,160,48,0.04) 0%, transparent 70%); pointer-events: none; }
.guide-entry .text { flex: 1; }
.guide-entry .text h3 { font-size: 1.6rem; margin-bottom: 12px; }
.guide-entry .text p { color: var(--text-muted); margin-bottom: 20px; }
.guide-entry .thumb { flex: 0 0 280px; border-radius: var(--radius-md); overflow: hidden; }
.guide-entry .thumb img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius-md); }

/* ===== Stats Grid ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 32px 20px; text-align: center;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card .num { font-size: 2.2rem; font-weight: 800; color: var(--text-white); margin-bottom: 4px; }
.stat-card .num span { color: var(--accent); }
.stat-card .label { font-size: 0.88rem; color: var(--text-muted); }

/* ===== Process ===== */
.process-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.process-item { text-align: center; position: relative; }
.process-item::after { content: ''; position: absolute; top: 28px; left: 60%; width: 80%; height: 1px; background: linear-gradient(90deg, var(--border-glow), transparent); }
.process-item:last-child::after { display: none; }
.process-step { width: 56px; height: 56px; border-radius: 50%; background: rgba(212,160,48,0.1); border: 2px solid var(--accent); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.2rem; font-weight: 700; color: var(--accent); position: relative; }
.process-step::before { counter-increment: step; content: counter(step); }
.process-item h4 { margin-bottom: 6px; }
.process-item p { color: var(--text-muted); font-size: 0.88rem; margin: 0; }

/* ===== Post List ===== */
.post-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.post-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 24px; display: flex; gap: 20px;
  transition: var(--transition);
}
.post-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: var(--shadow-md); background: var(--bg-card-hover); }
.post-card .thumb { flex: 0 0 140px; border-radius: var(--radius-sm); overflow: hidden; }
.post-card .thumb img { width: 100%; height: 120px; object-fit: cover; }
.post-card .info { flex: 1; }
.post-card .info .cat { display: inline-block; font-size: 0.72rem; padding: 2px 12px; border-radius: 50px; background: rgba(212,160,48,0.08); color: var(--accent); margin-bottom: 8px; }
.post-card .info h4 { font-size: 1.05rem; margin-bottom: 6px; }
.post-card .info h4 a { color: var(--text-white); }
.post-card .info h4 a:hover { color: var(--accent); }
.post-card .info p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card .info .meta { font-size: 0.75rem; color: var(--text-muted); display: flex; gap: 16px; }
.post-card .info .meta i { margin-right: 4px; }

.empty-list { text-align: center; padding: 48px 24px; color: var(--text-muted); grid-column: 1 / -1; }
.empty-list i { font-size: 2rem; margin-bottom: 12px; opacity: 0.4; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border-glow); }
.faq-q {
  padding: 18px 22px; display: flex; justify-content: space-between; align-items: center;
  font-weight: 600; color: var(--text-white); cursor: pointer; gap: 16px;
}
.faq-q i { color: var(--accent); font-size: 0.85rem; transition: var(--transition); flex-shrink: 0; }
.faq-q.open i { transform: rotate(180deg); }
.faq-a { padding: 0 22px 18px; color: var(--text-muted); font-size: 0.92rem; line-height: 1.8; display: none; }
.faq-a.show { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #0d0d1a 0%, #1a1a30 100%);
  border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
  text-align: center; padding: 80px 0;
  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: 0.06; mix-blend-mode: screen; }
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { max-width: 560px; margin: 0 auto 32px; color: var(--text-muted); }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer { background: var(--bg-body); border-top: 1px solid var(--border-color); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); max-width: 300px; }
.footer h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-white); }
.footer ul li { margin-bottom: 8px; }
.footer ul a { color: var(--text-muted); font-size: 0.88rem; }
.footer ul a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); margin: 0 6px; }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .process-item::after { display: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-entry { flex-direction: column; text-align: center; padding: 32px 24px; }
  .guide-entry .thumb { flex: 0 0 auto; width: 100%; max-width: 360px; }
}

@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .nav-list { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(13,13,26,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border-color); gap: 4px; }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 12px 16px; width: 100%; }
  .nav-list a.active::after { display: none; }
  .nav-cta { text-align: center; }
  .hero { min-height: 60vh; }
  .hero-stats { gap: 24px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .post-list { grid-template-columns: 1fr; }
  .post-card { flex-direction: column; }
  .post-card .thumb { flex: 0 0 auto; width: 100%; }
  .post-card .thumb img { height: 180px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .process-list { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 52px 0; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 300px; justify-content: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .stat-card .num { font-size: 1.6rem; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero { min-height: 50vh; }
  .hero h1 { font-size: 1.6rem; }
  .hero p { font-size: 0.92rem; }
  .hero-stats { gap: 16px; flex-direction: column; }
  .stats-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.4rem; }
  .card { padding: 20px 16px; }
  .guide-entry { padding: 24px 16px; }
  .topbar .container { justify-content: center; font-size: 0.72rem; }
  .topbar .domain { display: none; }
}

/* ===== Glow & Accent Utilities ===== */
.glow-text { color: var(--accent); }
.border-glow { border-color: var(--border-glow); }
.bg-glow-soft { background: rgba(212,160,48,0.04); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #f7b731;
            --accent-light: #fcd36b;
            --accent-dark: #d49a1a;
            --bg: #f8f9fc;
            --bg-alt: #eef1f8;
            --bg-dark: #0f1a4a;
            --text: #1e2a3e;
            --text-light: #5a6a7e;
            --text-inverse: #ffffff;
            --border: #dce1eb;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(26, 42, 108, 0.08);
            --shadow-hover: 0 12px 40px rgba(26, 42, 108, 0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo span {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--primary);
            opacity: 0.9;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-list li a i {
            font-size: 1rem;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav-list li a.active {
            color: var(--primary);
            background: var(--bg-alt);
            box-shadow: inset 0 -2px 0 var(--accent);
        }
        .nav-list li a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(247, 183, 49, 0.35);
        }
        .nav-list li a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(247, 183, 49, 0.45);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .menu-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero / Page Banner ===== */
        .page-banner {
            padding: 100px 0 60px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            text-align: center;
            color: var(--text-inverse);
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 74, 0.88), rgba(26, 42, 108, 0.78));
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-banner p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
            opacity: 0.92;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.95rem;
            margin-bottom: 20px;
            opacity: 0.85;
        }
        .page-banner .breadcrumb a {
            color: var(--accent-light);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            color: var(--primary);
        }
        .section-alt .section-title,
        .section-dark .section-title {
            color: var(--text-inverse);
        }
        .section-sub {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 50px;
            line-height: 1.8;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Card ===== */
        .card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        /* ===== Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== Steps / Timeline ===== */
        .step-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 30px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(247, 183, 49, 0.35);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 8px;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-box>* {
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-box .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(247, 183, 49, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(247, 183, 49, 0.5);
            color: var(--primary-dark);
        }
        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: var(--text-inverse);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(247, 183, 49, 0.12);
            transform: translateY(-3px);
            color: var(--accent-light);
        }

        /* ===== Feature Cards (image + text) ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .feature-text h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .feature-text p {
            color: var(--text-light);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-text ul li {
            display: flex;
            gap: 12px;
            padding: 8px 0;
            font-size: 1rem;
            color: var(--text);
        }
        .feature-text ul li i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 28px 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.95rem;
            opacity: 0.8;
            margin-top: 8px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.8;
            opacity: 0.75;
        }
        .footer h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer ul li i {
            width: 20px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            font-size: 0.88rem;
            opacity: 0.7;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .menu-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                padding: 14px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list li a.nav-cta {
                text-align: center;
                justify-content: center;
            }

            .page-banner {
                min-height: 260px;
                padding: 80px 0 40px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }

            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 32px;
            }

            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .step-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-row {
                grid-template-columns: 1fr;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .feature-text h3 {
                font-size: 1.4rem;
            }

            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 24px 20px;
            }
            .btn-primary,
            .btn-outline {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .cta-box .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #132240;
            --secondary: #1a3a6b;
            --accent: #f0b90b;
            --accent-hover: #d4a309;
            --accent-glow: rgba(240, 185, 11, 0.25);
            --bg: #f4f6fa;
            --bg-alt: #eef1f6;
            --bg-card: #ffffff;
            --text: #1a2332;
            --text-light: #5a6a7e;
            --text-muted: #8a9aae;
            --border: #dce1e8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 18px;
            --shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.06);
            --shadow-md: 0 6px 24px rgba(10, 22, 40, 0.08);
            --shadow-lg: 0 16px 48px rgba(10, 22, 40, 0.12);
            --shadow-glow: 0 0 30px rgba(240, 185, 11, 0.15);
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --topbar-h: 40px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul {
            list-style: none;
        }

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

        /* ===== Topbar ===== */
        .topbar {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
            height: var(--topbar-h);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .topbar-left span {
            color: var(--accent);
            font-weight: 600;
        }
        .topbar-right a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            margin-left: 20px;
            transition: color var(--transition);
        }
        .topbar-right a:hover {
            color: var(--accent);
        }
        .topbar-right i {
            margin-right: 6px;
            color: var(--accent);
        }

        /* ===== Header / Nav ===== */
        .header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent);
            font-size: 28px;
        }
        .logo span {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list li a i {
            color: var(--text-muted);
            font-size: 14px;
            transition: color var(--transition);
        }
        .nav-list li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-list li a:hover i {
            color: var(--accent);
        }
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-list li a.active i {
            color: var(--accent);
        }
        .nav-list li a.nav-cta {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 14px var(--accent-glow);
        }
        .nav-list li a.nav-cta i {
            color: var(--primary);
        }
        .nav-list li a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(240, 185, 11, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.88) 0%, rgba(26, 58, 107, 0.72) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-banner .breadcrumb i {
            font-size: 12px;
            color: var(--accent);
        }
        .article-banner .category-tag {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .article-banner h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            max-width: 860px;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .article-banner .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .article-banner .meta i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-body .featured-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 32px;
        }
        .article-body .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--primary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--primary);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-alt);
            padding: 18px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            width: 100%;
        }
        .article-content a {
            color: var(--secondary);
            border-bottom: 1px solid transparent;
            font-weight: 500;
        }
        .article-content a:hover {
            border-bottom-color: var(--accent);
            color: var(--accent-hover);
        }

        .article-footer-bar {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            background: var(--bg-alt);
            color: var(--text-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: var(--primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share span {
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-light);
            transition: all var(--transition);
        }
        .article-share a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            transition: color var(--transition);
        }
        .sidebar-list li a i {
            color: var(--accent);
            font-size: 12px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .sidebar-list li a:hover {
            color: var(--accent-hover);
        }
        .sidebar-list li .date {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        .sidebar-cta {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            text-align: center;
        }
        .sidebar-cta h3 {
            color: var(--accent);
        }
        .sidebar-cta p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .sidebar-cta .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240, 185, 11, 0.35);
            color: var(--primary);
        }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 36px;
            text-align: center;
        }
        .related-section .section-title i {
            color: var(--accent);
            margin-right: 10px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .related-card .card-body .cat {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .related-card .card-body h4 a {
            color: inherit;
        }
        .related-card .card-body h4 a:hover {
            color: var(--accent-hover);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .related-card .card-body .date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .related-card .card-body .date i {
            margin-right: 4px;
            color: var(--accent);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .faq-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 36px;
            text-align: center;
        }
        .faq-section .section-title i {
            color: var(--accent);
            margin-right: 10px;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-section .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 17px;
            transition: all var(--transition);
            box-shadow: 0 6px 24px var(--accent-glow);
        }
        .cta-section .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(240, 185, 11, 0.4);
            color: var(--primary);
        }
        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 17px;
            transition: all var(--transition);
        }
        .cta-section .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(240, 185, 11, 0.08);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer ul li i {
            color: var(--accent);
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            margin: 0 6px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box i {
            font-size: 56px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--secondary);
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .topbar {
                display: none;
            }
            .header {
                height: 64px;
                --header-h: 64px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                z-index: 99;
                gap: 4px;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list li a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .article-banner {
                padding: 50px 0 40px;
            }
            .article-banner h1 {
                font-size: 28px;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-content {
                font-size: 16px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-banner h1 {
                font-size: 24px;
            }
            .article-banner .meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body {
                padding: 18px 14px;
            }
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .sidebar-card {
                padding: 20px;
            }
            .logo {
                font-size: 20px;
            }
            .logo i {
                font-size: 22px;
            }
        }

        /* ===== Focus / Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }