/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --bg-main: #0B0E14;
  --bg-sec: #121724;
  --bg-card: #171E2B;
  --bg-deep: #05070C;
  --brand: #F5C542;
  --brand-hover: #FFD966;
  --brand-active: #D4A832;
  --accent: #8B5CF6;
  --accent-text: #C4B5FD;
  --success: #34D399;
  --warning: #F87171;
  --text-high: #E8ECF4;
  --text-mid: #9AA7B8;
  --text-low: #667085;
  --border: #232B3A;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
  --transition: 0.2s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-num: "Inter", "PingFang SC", -apple-system, sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-main);
  color: var(--text-high);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; border: none; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head h2 { font-size: 30px; font-weight: 700; color: var(--text-high); line-height: 1.3; margin-bottom: 14px; }
.section-head p { color: var(--text-mid); font-size: 16px; line-height: 1.7; }

/* ===== 顶部信息条 ===== */
.topbar { background: var(--bg-deep); height: 36px; border-bottom: 1px solid var(--border); }
.topbar .container { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.topbar-left { font-size: 12px; color: var(--text-mid); display: flex; align-items: center; gap: 6px; }
.topbar-left i { color: var(--success); font-size: 12px; }
.topbar-right { display: flex; gap: 16px; font-size: 12px; }
.topbar-right a { color: var(--brand); font-weight: 500; }
.topbar-right a:hover { color: #fff; }

/* ===== 主导航 ===== */
.main-nav { background: var(--bg-main); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; height: 72px; display: flex; align-items: center; }
.nav-container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: var(--brand); letter-spacing: 1px; }
.logo-icon { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--brand), #E0A82E); border-radius: 8px; color: var(--bg-deep); font-size: 16px; font-weight: 800; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > li > a { font-size: 15px; color: var(--text-high); font-weight: 500; padding: 6px 2px; position: relative; }
.nav-links > li > a::after { content: ""; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--brand); transition: width 0.3s ease; }
.nav-links > li > a:hover { color: var(--brand); }
.nav-links > li > a:hover::after { width: 100%; }
.nav-links > li > a.active { color: var(--brand); }
.nav-links > li > a.active::after { width: 100%; }
.nav-cta { display: flex; gap: 12px; align-items: center; }
.nav-toggle { display: none; font-size: 22px; color: var(--text-high); background: none; padding: 6px; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 32px; border-radius: var(--radius-btn); font-size: 15px; font-weight: 600; transition: all var(--transition); line-height: 1; }
.btn-primary { background: var(--brand); color: var(--bg-deep); }
.btn-primary:hover { background: var(--brand-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245, 197, 66, 0.25); color: var(--bg-deep); }
.btn-primary:active { transform: translateY(0); background: var(--brand-active); }
.btn-secondary { background: transparent; border: 1px solid var(--accent); color: var(--accent-text); }
.btn-secondary:hover { background: rgba(139, 92, 246, 0.12); border-color: #A78BFA; transform: translateY(-2px); }
.btn-secondary:active { background: rgba(139, 92, 246, 0.2); transform: translateY(0); }
.btn-sm { height: 38px; padding: 0 22px; font-size: 14px; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 520px; display: flex; align-items: center; background: var(--bg-main); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; opacity: 0.4; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11,14,20,0.92) 0%, rgba(11,14,20,0.82) 50%, rgba(11,14,20,0.7) 100%); }
.hero-content { position: relative; z-index: 2; padding: 90px 0 100px; max-width: 820px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(245, 197, 66, 0.1); border: 1px solid rgba(245, 197, 66, 0.3); color: var(--brand); font-size: 13px; padding: 4px 16px; border-radius: var(--radius-tag); margin-bottom: 24px; font-weight: 500; letter-spacing: 0.5px; }
.hero h1 { font-size: 38px; line-height: 1.28; font-weight: 700; color: var(--text-high); margin-bottom: 20px; letter-spacing: 0.5px; }
.hero h1 .highlight { color: var(--brand); border-bottom: 3px solid rgba(245, 197, 66, 0.5); }
.hero-sub { font-size: 17px; color: var(--text-mid); max-width: 560px; line-height: 1.8; margin-bottom: 36px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-trust { display: flex; gap: 36px; flex-wrap: wrap; border-top: 1px solid rgba(35, 43, 58, 0.6); padding-top: 28px; }
.trust-item { display: flex; flex-direction: column; gap: 4px; }
.trust-item .trust-num { font-size: 24px; font-weight: 700; color: var(--brand); font-family: var(--font-num); }
.trust-item .trust-label { font-size: 13px; color: var(--text-mid); }

/* ===== 痛点区 ===== */
.pain-section { background: var(--bg-sec); }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pain-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 40px 30px; transition: all var(--transition); }
.pain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(245, 197, 66, 0.45); }
.pain-card .pain-icon { width: 50px; height: 50px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 20px; }
.pain-card:nth-child(1) .pain-icon { background: rgba(139, 92, 246, 0.12); color: var(--accent); }
.pain-card:nth-child(2) .pain-icon { background: rgba(245, 197, 66, 0.12); color: var(--brand); }
.pain-card:nth-child(3) .pain-icon { background: rgba(52, 211, 153, 0.12); color: var(--success); }
.pain-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 12px; color: var(--text-high); }
.pain-card p { font-size: 14px; color: var(--text-mid); line-height: 1.7; }

/* ===== 解决方案区 ===== */
.solution-section { background: var(--bg-main); }
.solution-wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.solution-img { border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--border); position: relative; }
.solution-img img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
.solution-info h2 { font-size: 30px; font-weight: 700; line-height: 1.3; margin-bottom: 18px; }
.solution-info .lead { color: var(--text-mid); font-size: 16px; line-height: 1.8; margin-bottom: 30px; }
.solution-points { display: flex; flex-direction: column; gap: 22px; }
.point-item { display: flex; gap: 16px; align-items: flex-start; }
.point-item .point-num { width: 30px; height: 30px; border-radius: 50%; background: rgba(139, 92, 246, 0.12); color: var(--accent-text); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; flex-shrink: 0; }
.point-item h4 { font-size: 17px; font-weight: 600; color: var(--text-high); margin-bottom: 4px; }
.point-item p { font-size: 14px; color: var(--text-mid); line-height: 1.65; }

/* ===== 成果区 ===== */
.result-section { background: var(--bg-sec); position: relative; overflow: hidden; }
.result-section::before { content: ""; position: absolute; top: 0; right: 0; width: 100%; height: 100%; background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; opacity: 0.07; }
.result-section .container { position: relative; z-index: 2; }
.result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.result-card { background: rgba(23, 30, 43, 0.9); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 34px 24px; text-align: left; transition: all var(--transition); position: relative; }
.result-card::before { content: ""; position: absolute; top: 0; left: 24px; right: 24px; height: 2px; background: var(--brand); border-radius: 2px; opacity: 0.5; }
.result-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.result-card .result-icon { font-size: 22px; color: var(--brand); margin-bottom: 16px; }
.result-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; color: var(--text-high); }
.result-card p { font-size: 13.5px; color: var(--text-mid); line-height: 1.65; }

/* ===== 口碑/玩家关注区 ===== */
.voice-section { background: var(--bg-main); }
.voice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.voice-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 32px 28px; transition: all var(--transition); }
.voice-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(139, 92, 246, 0.4); transform: translateY(-4px); }
.voice-stars { color: var(--brand); font-size: 14px; letter-spacing: 2px; margin-bottom: 16px; }
.voice-card blockquote { border: none; font-size: 14px; color: var(--text-mid); line-height: 1.75; margin: 0 0 20px; padding: 0; }
.voice-card blockquote::before { content: "\201C"; font-size: 40px; color: var(--brand); opacity: 0.3; font-family: Georgia, serif; line-height: 0; vertical-align: middle; margin-right: 4px; }
.voice-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.voice-meta span { font-size: 12px; padding: 4px 14px; border-radius: var(--radius-tag); border: 1px solid var(--border); color: var(--text-mid); background: rgba(255,255,255,0.02); }

/* ===== CMS 最新信息区 ===== */
.update-section { background: var(--bg-sec); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { display: block; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 28px; transition: all var(--transition); position: relative; }
.news-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(245, 197, 66, 0.45); transform: translateY(-4px); }
.news-badge { display: inline-block; font-size: 12px; font-weight: 500; color: var(--accent-text); background: rgba(139, 92, 246, 0.12); border: 1px solid rgba(139, 92, 246, 0.3); padding: 3px 14px; border-radius: var(--radius-tag); margin-bottom: 14px; }
.news-card h3 { font-size: 17px; font-weight: 600; color: var(--text-high); line-height: 1.45; margin-bottom: 10px; }
.news-card h3:hover { color: var(--brand); }
.news-excerpt { font-size: 14px; color: var(--text-mid); line-height: 1.7; margin-bottom: 16px; }
.news-meta { display: flex; align-items: center; gap: 20px; font-size: 12px; color: var(--text-low); }
.news-meta i { margin-right: 4px; }
.news-empty { grid-column: 1 / -1; text-align: center; background: var(--bg-card); border: 2px dashed var(--border); border-radius: var(--radius-card); padding: 60px 20px; }
.news-empty i { font-size: 40px; color: var(--text-low); margin-bottom: 16px; }
.news-empty p { color: var(--text-mid); font-size: 15px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-main); }
.faq-wrap { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; transition: border-color var(--transition); }
.faq-item.active { border-color: rgba(245, 197, 66, 0.4); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-size: 15px; font-weight: 600; color: var(--text-high); background: transparent; transition: color var(--transition); }
.faq-question:hover { color: var(--brand); }
.faq-item.active .faq-question { color: var(--brand); }
.faq-icon { font-size: 14px; color: var(--text-mid); transition: transform 0.3s ease; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--brand); }
.faq-answer { display: none; padding: 0 24px 20px; color: var(--text-mid); font-size: 14px; line-height: 1.75; }

/* ===== CTA ===== */
.cta-section { background: var(--bg-sec); padding: 80px 0; }
.cta-panel { background: linear-gradient(135deg, rgba(245, 197, 66, 0.08), rgba(139, 92, 246, 0.06)); border: 1px solid rgba(245, 197, 66, 0.2); border-radius: 20px; padding: 56px 48px; text-align: center; max-width: 900px; margin: 0 auto; }
.cta-panel h2 { font-size: 28px; font-weight: 700; margin-bottom: 14px; color: var(--text-high); }
.cta-panel p { font-size: 15px; color: var(--text-mid); margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-panel .btn { min-width: 200px; justify-content: center; }

/* ===== 页脚 ===== */
.footer { background: var(--bg-deep); border-top: 3px solid rgba(245, 197, 66, 0.5); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { font-size: 20px; margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; color: var(--text-low); line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--text-mid); font-size: 14px; }
.footer-social a:hover { border-color: var(--brand); color: var(--brand); }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 18px; color: var(--text-high); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13.5px; color: var(--text-low); }
.footer-col ul li a:hover { color: var(--brand); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; color: var(--text-low); margin-bottom: 12px; }
.footer-contact li i { color: var(--text-mid); margin-top: 3px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--text-low); }
.footer-bottom .links { display: flex; gap: 20px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .solution-wrap { grid-template-columns: 1fr; gap: 40px; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 24px; }
  .pain-grid { grid-template-columns: 1fr; }
  .voice-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links { position: absolute; top: 72px; left: 0; right: 0; background: var(--bg-sec); flex-direction: column; align-items: stretch; padding: 20px 24px; gap: 8px; border-bottom: 1px solid var(--border); display: none; z-index: 99; }
  .nav-links.open { display: flex; }
  .nav-links > li > a { padding: 12px 0; border-bottom: 1px solid rgba(35,43,58,0.5); }
  .nav-links > li > a::after { display: none; }
  .nav-cta { margin-top: 12px; }
  .hero h1 { font-size: 26px; }
  .hero-sub { font-size: 15px; }
  .hero-content { padding: 60px 0 70px; }
  .hero-trust { gap: 20px; }
  .result-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-panel { padding: 40px 24px; }
  .btn { width: 100%; justify-content: center; }
  .hero-btns { flex-direction: column; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section-head h2 { font-size: 22px; }
  .solution-img img { min-height: 240px; }
}

/* roulang page: article */
:root{
  --bg-primary:#0B0E14;
  --bg-secondary:#121724;
  --bg-card:#171E2B;
  --bg-soft:#1C2433;
  --accent-gold:#F5C542;
  --accent-gold-hover:#FFD966;
  --accent-gold-active:#D4A832;
  --accent-violet:#8B5CF6;
  --violet-light:#C4B5FD;
  --text-primary:#E8ECF4;
  --text-secondary:#9AA7B8;
  --text-muted:#667085;
  --border-color:#232B3A;
  --success:#34D399;
  --warning:#F87171;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-pill:999px;
  --shadow-card:0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover:0 8px 24px rgba(0,0,0,0.4);
  --transition:0.2s ease;
  --container-max:1200px;
  --gold-line:2px solid var(--accent-gold);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Inter",-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--text-primary);text-decoration:none;transition:color var(--transition);}
a:hover{color:var(--accent-gold);}
button{font-family:inherit;}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:all var(--transition);
}
.btn-primary{
  background:var(--accent-gold);color:var(--bg-primary);border-color:var(--accent-gold);
  box-shadow:0 4px 14px rgba(245,197,66,0.18);
}
.btn-primary:hover{
  background:var(--accent-gold-hover);color:var(--bg-primary);
  transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,197,66,0.28);
}
.btn-primary:active{
  transform:translateY(0);background:var(--accent-gold-active);
}
.btn-outline{
  background:transparent;color:var(--violet-light);
  border-color:var(--accent-violet);
}
.btn-outline:hover{
  background:rgba(139,92,246,0.12);color:#C4B5FD;
  border-color:#A78BFA;transform:translateY(-2px);
}
.btn-outline:active{background:rgba(139,92,246,0.2);transform:translateY(0);}
.btn-lg{padding:16px 40px;font-size:16px;}
.btn-sm{padding:9px 18px;font-size:13px;border-radius:6px;}
.btn:focus-visible{
  outline:3px solid rgba(139,92,246,0.5);outline-offset:2px;
}

/* ---------- top bar ---------- */
.topbar{
  background:#05070C;border-bottom:1px solid #151A24;
  font-size:12px;color:var(--text-secondary);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;}
.topbar-left{display:flex;align-items:center;gap:8px;}
.topbar-left i{color:var(--success);font-size:13px;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-right a{color:var(--text-secondary);transition:color var(--transition);}
.topbar-right a:hover{color:var(--accent-gold);}

/* ---------- main nav ---------- */
.main-nav{
  background:var(--bg-primary);
  border-bottom:1px solid var(--border-color);
  position:sticky;top:0;z-index:100;
  min-height:72px;
}
.nav-container{display:flex;align-items:center;min-height:72px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--accent-gold);font-size:22px;font-weight:700;
  white-space:nowrap;
}
.logo:hover{color:var(--accent-gold);}
.logo-icon{
  width:34px;height:34px;flex:0 0 34px;
  background:linear-gradient(135deg,#F5C542,#D4A832);
  color:var(--bg-primary);
  border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:-0.5px;
}
.nav-links{
  display:flex;align-items:center;gap:30px;
  list-style:none;margin:0 0 0 auto;
}
.nav-links a{
  color:var(--text-primary);font-size:15px;
  font-weight:500;position:relative;padding:6px 0;
  transition:color var(--transition);
}
.nav-links a:hover{color:var(--accent-gold);}
.nav-links a.active{color:var(--accent-gold);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;bottom:-2px;
  width:100%;height:2px;background:var(--accent-gold);
  border-radius:2px;
}
.nav-cta{margin-left:6px;}
.nav-cta .btn{box-shadow:none;}
.nav-toggle{
  display:none;background:transparent;border:0;
  color:var(--accent-gold);font-size:22px;cursor:pointer;
  margin-left:auto;padding:6px;
}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  background-size:cover;
  background-position:center;
  padding:80px 0 64px;
  border-bottom:1px solid var(--border-color);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,14,20,0.96) 0%,rgba(11,14,20,0.84) 40%,rgba(11,14,20,0.92) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-secondary);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--text-secondary);}
.breadcrumb a:hover{color:var(--accent-gold);}
.breadcrumb .sep{color:var(--text-muted);}
.breadcrumb .current{color:var(--text-primary);font-weight:500;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-header{
  max-width:860px;padding:20px 0 8px;
  border-left:3px solid var(--accent-gold);
  padding-left:24px;
}
.article-header .article-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(139,92,246,0.14);
  border:1px solid rgba(139,92,246,0.35);
  color:var(--violet-light);
  font-size:12px;font-weight:600;
  padding:4px 16px;border-radius:var(--radius-pill);
  margin-bottom:18px;
}
.article-header h1{
  font-size:36px;line-height:1.25;font-weight:700;
  letter-spacing:0.5px;color:var(--text-primary);
  margin-bottom:16px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:22px;
  font-size:13px;color:var(--text-secondary);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:var(--accent-violet);font-size:14px;}

/* ---------- article body ---------- */
.article-body{
  background:var(--bg-primary);
  padding:56px 0 64px;
}
.article-container{max-width:860px;margin:0 auto;padding:0 24px;}
.article-prose{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-card);
  padding:48px 56px;
  box-shadow:var(--shadow-card);
}
.article-prose > * + *{margin-top:22px;}
.article-prose p{
  font-size:16px;line-height:1.8;color:var(--text-primary);
}
.article-prose h2{
  font-size:26px;font-weight:700;margin-top:42px;line-height:1.3;
  color:var(--accent-gold);
  border-left:3px solid var(--accent-gold);
  padding-left:16px;
}
.article-prose h3{
  font-size:20px;font-weight:600;margin-top:32px;line-height:1.4;
  color:var(--text-primary);
}
.article-prose h4{
  font-size:17px;font-weight:600;margin-top:24px;color:var(--violet-light);
}
.article-prose ul,.article-prose ol{
  padding-left:28px;line-height:1.8;
}
.article-prose ul li,.article-prose ol li{margin-bottom:8px;color:var(--text-primary);}
.article-prose ul{list-style:square;}
.article-prose blockquote{
  background:var(--bg-secondary);
  border-left:3px solid var(--accent-violet);
  border-radius:0 8px 8px 0;
  padding:18px 24px;color:var(--text-secondary);
  font-style:italic;
}
.article-prose img{
  border-radius:var(--radius-card);margin:28px 0;
  box-shadow:var(--shadow-card);
}
.article-prose figure{
  margin:28px 0;
}
.article-prose figure img{border-radius:var(--radius-card);}
.article-prose figcaption{
  text-align:center;font-size:13px;color:var(--text-muted);margin-top:8px;
}
.article-prose pre{
  background:#0A0D13;
  border:1px solid var(--border-color);
  border-radius:8px;
  padding:20px 24px;
  overflow-x:auto;
  font-size:14px;line-height:1.7;
  color:#D6E2F0;
}
.article-prose code{
  background:rgba(139,92,246,0.12);
  color:var(--violet-light);
  border-radius:4px;
  padding:2px 6px;
  font-size:13px;
}
.article-prose pre code{
  background:transparent;color:inherit;padding:0;font-size:14px;
}
.article-prose table{
  width:100%;border-collapse:collapse;margin:28px 0;
  font-size:14px;
}
.article-prose table th{
  background:var(--bg-secondary);
  color:var(--accent-gold);
  font-weight:600;
  padding:12px 16px;
  border:1px solid var(--border-color);
  text-align:left;
}
.article-prose table td{
  padding:11px 16px;
  border:1px solid var(--border-color);
  color:var(--text-secondary);
}
.article-prose table tr:hover td{background:rgba(139,92,246,0.05);}
.article-prose hr{
  border:0;border-top:1px solid var(--border-color);margin:36px 0;
}

/* ---------- tags / pager ---------- */
.article-extra{
  margin-top:32px;border-top:1px solid var(--border-color);
  padding-top:28px;
}
.article-tags{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;margin-bottom:32px;
}
.article-tags .tag-label{color:var(--text-muted);font-weight:500;margin-right:4px;}
.article-tags a{
  display:inline-flex;align-items:center;
  background:rgba(139,92,246,0.08);
  border:1px solid rgba(139,92,246,0.25);
  color:var(--violet-light);
  font-size:12px;padding:4px 14px;
  border-radius:var(--radius-pill);
  transition:all var(--transition);
}
.article-tags a:hover{
  background:rgba(139,92,246,0.2);
  border-color:var(--accent-violet);
  color:#E9D5FF;
}
.article-pagination{
  display:flex;align-items:stretch;justify-content:space-between;
  gap:16px;
}
.article-pagination a{
  flex:1;display:flex;flex-direction:column;gap:4px;
  background:var(--bg-secondary);
  border:1px solid var(--border-color);
  border-radius:var(--radius-card);
  padding:16px 20px;
  font-size:13px;color:var(--text-secondary);
  transition:all var(--transition);
}
.article-pagination a:hover{
  border-color:var(--accent-violet);
  box-shadow:var(--shadow-hover);
  color:var(--text-primary);
  transform:translateY(-2px);
}
.article-pagination .page-label{
  font-size:12px;color:var(--text-muted);
}
.article-pagination .page-title{
  font-size:15px;font-weight:600;color:var(--text-primary);
}
.article-pagination .page-title i{color:var(--accent-gold);margin:0 4px;}

/* ---------- empty state ---------- */
.article-empty{
  text-align:center;
  background:var(--bg-card);
  border:1px dashed var(--border-color);
  border-radius:var(--radius-card);
  padding:80px 24px;
}
.article-empty .empty-icon{
  width:72px;height:72px;margin:0 auto 20px;
  border-radius:50%;
  background:var(--bg-secondary);
  display:flex;align-items:center;justify-content:center;
  font-size:28px;color:var(--text-muted);
}
.article-empty h2{
  font-size:24px;font-weight:700;color:var(--text-primary);
  margin-bottom:10px;
}
.article-empty p{color:var(--text-secondary);margin-bottom:28px;font-size:15px;}

/* ---------- related section ---------- */
.related-section{
  background:var(--bg-secondary);
  padding:72px 0;
  border-top:1px solid var(--border-color);
}
.section-head{
  text-align:center;margin-bottom:44px;
}
.section-head .section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent-gold);font-size:13px;font-weight:600;
  text-transform:uppercase;letter-spacing:1px;
  margin-bottom:12px;
}
.section-head h2{
  font-size:30px;font-weight:700;line-height:1.3;
  letter-spacing:0.5px;
}
.related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:all var(--transition);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(245,197,66,0.5);
}
.related-card .card-cover{
  aspect-ratio:16/9;overflow:hidden;position:relative;
  background:var(--bg-soft);
}
.related-card .card-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 0.4s ease;
}
.related-card:hover .card-cover img{transform:scale(1.05);}
.related-card .related-body{
  padding:20px 22px 22px;
}
.related-card .card-cat{
  display:inline-flex;
  background:rgba(139,92,246,0.12);
  border:1px solid rgba(139,92,246,0.3);
  color:var(--violet-light);
  font-size:12px;font-weight:600;
  padding:2px 12px;border-radius:var(--radius-pill);
  margin-bottom:12px;
}
.related-card h3{
  font-size:17px;font-weight:600;line-height:1.4;
  margin-bottom:10px;
}
.related-card h3 a{color:var(--text-primary);transition:color var(--transition);}
.related-card h3 a:hover{color:var(--accent-gold);}
.related-card time{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--text-muted);
}

/* ---------- CTA ---------- */
.cta-section{
  padding:72px 0;
  background:var(--bg-primary);
}
.cta-panel{
  background:linear-gradient(135deg,rgba(139,92,246,0.12) 0%,rgba(245,197,66,0.08) 100%);
  border:1px solid rgba(139,92,246,0.22);
  border-radius:16px;
  padding:52px 48px;
  text-align:center;position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:120px;height:3px;
  background:linear-gradient(90deg,transparent,var(--accent-gold),transparent);
}
.cta-panel h2{
  font-size:28px;font-weight:700;margin-bottom:12px;
  letter-spacing:0.5px;
}
.cta-panel p{
  color:var(--text-secondary);font-size:15px;max-width:600px;
  margin:0 auto 32px;
}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.footer{
  background:#05070C;
  border-top:1px solid rgba(245,197,66,0.25);
  padding:64px 24px 32px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;margin-bottom:44px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{
  color:var(--text-secondary);font-size:14px;line-height:1.7;
  max-width:280px;margin-bottom:18px;
}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:8px;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:15px;
  transition:all var(--transition);
}
.footer-social a:hover{
  color:var(--accent-gold);
  border-color:var(--accent-gold);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:15px;font-weight:600;color:var(--text-primary);
  margin-bottom:16px;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{
  color:var(--text-secondary);font-size:14px;
  transition:color var(--transition);
}
.footer-col ul a:hover{color:var(--accent-gold);}
.footer-contact li{
  display:flex;align-items:flex-start;gap:8px;
  color:var(--text-secondary);font-size:14px;
}
.footer-contact li i{
  color:var(--accent-violet);margin-top:4px;font-size:13px;
}
.footer-bottom{
  border-top:1px solid var(--border-color);
  padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-muted);
}
.footer-bottom .links{display:flex;gap:18px;}
.footer-bottom .links a{color:var(--text-muted);}
.footer-bottom .links a:hover{color:var(--accent-gold);}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
  .nav-container{min-height:60px;position:relative;}
  .nav-toggle{display:block;}
  .nav-links{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    background:var(--bg-secondary);
    flex-direction:column;align-items:stretch;
    padding:16px 24px 24px;gap:12px;
    border-bottom:1px solid var(--border-color);
    box-shadow:0 16px 32px rgba(0,0,0,0.4);
    z-index:99;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:10px 0;font-size:16px;border-bottom:1px solid rgba(35,43,58,0.6);}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{color:var(--accent-gold);}
  .nav-cta{margin:12px 0 0;}
  .nav-cta .btn{width:100%;}
  .article-hero{padding:52px 0 40px;}
  .article-header h1{font-size:26px;}
  .article-prose{padding:28px 22px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-panel{padding:36px 24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media(max-width:520px){
  .container{padding:0 16px;}
  .topbar-left{font-size:11px;}
  .topbar-right{gap:10px;}
  .logo{font-size:18px;}
  .article-meta{gap:12px;}
  .article-header{padding-left:16px;}
  .article-header h1{font-size:23px;}
  .article-prose{padding:22px 16px;}
  .article-pagination{flex-direction:column;}
  .btn-lg{width:100%;}
  .cta-panel h2{font-size:22px;}
  .footer{padding:48px 16px 24px;}
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
    :root {
        --bg: #0B0E14;
        --bg-secondary: #121724;
        --bg-card: #171E2B;
        --gold: #F5C542;
        --gold-hover: #FFD966;
        --gold-active: #D4A832;
        --violet: #8B5CF6;
        --violet-light: #C4B5FD;
        --success: #34D399;
        --warning: #F87171;
        --text: #E8ECF4;
        --text-sub: #9AA7B8;
        --text-muted: #667085;
        --border: #232B3A;
        --radius: 12px;
        --radius-sm: 8px;
        --shadow: 0 2px 8px rgba(0,0,0,0.25);
        --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
        --transition: 0.2s ease;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Inter", system-ui, -apple-system, sans-serif;
        background: var(--bg);
        color: var(--text);
        font-size: 15px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
        border: 0;
    }
    a {
        color: var(--text);
        text-decoration: none;
        transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    a:hover {
        color: var(--gold);
    }
    a:focus-visible, button:focus-visible {
        outline: 2px solid var(--violet);
        outline-offset: 2px;
    }
    ul, ol {
        list-style: none;
    }
    button {
        font-family: inherit;
        border: none;
        background: none;
        cursor: pointer;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    .row {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
    }
    .row .columns {
        padding-left: 12px;
        padding-right: 12px;
    }

    /* ===== Typography ===== */
    h1, h2, h3 {
        color: var(--text);
        line-height: 1.3;
        font-weight: 700;
    }
    h1 {
        font-size: 36px;
    }
    h2 {
        font-size: 28px;
        margin-bottom: 16px;
    }
    h3 {
        font-size: 20px;
        font-weight: 600;
        margin-bottom: 10px;
    }
    p {
        color: var(--text-sub);
        margin-bottom: 16px;
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 44px;
        padding: 0 28px;
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 600;
        line-height: 1;
        transition: all var(--transition);
        border: none;
        cursor: pointer;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--gold);
        color: var(--bg);
    }
    .btn-primary:hover {
        background: var(--gold-hover);
        color: var(--bg);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(245, 197, 66, 0.25);
    }
    .btn-primary:active {
        transform: translateY(0);
        background: var(--gold-active);
    }
    .btn-outline {
        background: transparent;
        border: 1px solid var(--violet);
        color: var(--violet-light);
    }
    .btn-outline:hover {
        background: rgba(139, 92, 246, 0.12);
        border-color: var(--violet-light);
        color: #fff;
    }
    .btn-outline:active {
        background: rgba(139, 92, 246, 0.2);
    }
    .btn-sm {
        height: 38px;
        padding: 0 20px;
        font-size: 14px;
    }
    .btn-lg {
        height: 52px;
        padding: 0 42px;
        font-size: 16px;
    }

    /* ===== Badges & Tags ===== */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 14px;
        border-radius: 999px;
        border: 1px solid var(--violet);
        color: var(--violet-light);
        font-size: 12px;
        font-weight: 500;
        background: rgba(139, 92, 246, 0.08);
    }
    .section-tag {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 2px;
        text-transform: uppercase;
        color: var(--gold);
        margin-bottom: 10px;
        padding-bottom: 6px;
        border-bottom: 2px solid var(--gold);
    }
    .tag-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .tag-list a {
        display: inline-block;
        padding: 5px 14px;
        border-radius: 999px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        font-size: 12px;
        color: var(--text-sub);
        transition: all var(--transition);
    }
    .tag-list a:hover {
        border-color: var(--violet);
        color: var(--violet-light);
        background: rgba(139, 92, 246, 0.08);
    }

    /* ===== Top Info Bar ===== */
    .top-info-bar {
        background: #05070C;
        border-bottom: 1px solid rgba(35, 43, 58, 0.6);
        height: 36px;
        font-size: 12px;
        color: var(--text-sub);
    }
    .top-info-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .top-safe-tip {
        display: flex;
        align-items: center;
        gap: 6px;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }
    .top-safe-tip i {
        color: var(--gold);
    }
    .top-actions {
        display: flex;
        align-items: center;
        gap: 16px;
        flex-shrink: 0;
    }
    .top-actions a {
        color: var(--text-sub);
        font-size: 12px;
        font-weight: 500;
        transition: color var(--transition);
    }
    .top-actions a:hover {
        color: var(--gold);
    }

    /* ===== Header & Nav ===== */
    .header {
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
    }
    .main-nav {
        background: transparent;
    }
    .nav-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 20px;
    }
    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 32px;
        height: 32px;
        background: var(--gold);
        color: var(--bg);
        font-size: 14px;
        font-weight: 800;
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        letter-spacing: -0.5px;
    }
    .logo span:last-child {
        font-size: 20px;
        font-weight: 700;
        color: var(--gold);
        letter-spacing: 0.5px;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-links > li {
        margin: 0;
    }
    .nav-links a {
        display: block;
        padding: 8px 16px;
        font-size: 15px;
        color: var(--text);
        border-bottom: 2px solid transparent;
        transition: color var(--transition), border-color var(--transition);
    }
    .nav-links a:hover {
        color: var(--gold);
        border-bottom-color: var(--gold);
    }
    .nav-links a.active {
        color: var(--gold);
        border-bottom-color: var(--gold);
    }
    .nav-cta {
        margin-left: 10px;
    }
    .nav-cta .btn {
        height: 38px;
        padding: 0 18px;
        font-size: 13px;
    }
    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
        color: var(--text);
        font-size: 20px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .nav-toggle:hover {
        color: var(--gold);
        border-color: var(--gold);
    }

    /* ===== Page Head ===== */
    .page-head {
        background: linear-gradient(135deg, rgba(11, 14, 20, 0.82) 0%, rgba(18, 23, 36, 0.92) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        padding: 64px 0 56px;
        border-bottom: 1px solid var(--border);
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 28px;
    }
    .breadcrumb a {
        color: var(--text-sub);
    }
    .breadcrumb a:hover {
        color: var(--gold);
    }
    .breadcrumb span:last-child {
        color: var(--gold);
    }
    .page-head h1 {
        font-size: 36px;
        max-width: 800px;
        margin-bottom: 16px;
    }
    .page-head h1 em {
        font-style: normal;
        color: var(--gold);
    }
    .page-head-sub {
        font-size: 16px;
        color: var(--text-sub);
        max-width: 560px;
        margin-bottom: 24px;
    }
    .page-head-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    /* ===== Category Main Content ===== */
    .category-main {
        padding: 64px 0;
    }
    .content-main {
        display: flex;
        flex-direction: column;
        gap: 40px;
    }
    .text-image-block {
        display: flex;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: box-shadow var(--transition), border-color var(--transition);
    }
    .text-image-block:hover {
        box-shadow: var(--shadow-lg);
        border-color: rgba(245, 197, 66, 0.4);
    }
    .text-image-block.reverse {
        flex-direction: row-reverse;
    }
    .ti-media {
        flex: 0 0 46%;
        min-height: 240px;
        background: #1a2130;
        overflow: hidden;
    }
    .ti-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .text-image-block:hover .ti-media img {
        transform: scale(1.03);
    }
    .ti-body {
        flex: 1;
        padding: 32px 32px;
    }
    .ti-body h2 {
        font-size: 22px;
        margin-bottom: 12px;
    }
    .ti-body p {
        font-size: 14px;
        margin-bottom: 20px;
    }

    /* ===== Sidebar ===== */
    .content-sidebar {
        display: flex;
        flex-direction: column;
        gap: 24px;
    }
    .sidebar-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 24px;
        box-shadow: var(--shadow);
    }
    .sidebar-card-title {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 18px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--border);
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--text);
    }
    .sidebar-card-title i {
        color: var(--gold);
    }
    .side-nav-list li {
        margin-bottom: 4px;
    }
    .side-nav-list a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 14px;
        border-radius: var(--radius-sm);
        font-size: 14px;
        color: var(--text-sub);
        transition: all var(--transition);
    }
    .side-nav-list a:hover {
        background: rgba(139, 92, 246, 0.1);
        color: var(--violet-light);
    }
    .side-nav-list a i {
        font-size: 12px;
        color: var(--text-muted);
    }
    .side-nav-list a.active-side {
        background: rgba(245, 197, 66, 0.08);
        color: var(--gold);
        border-left: 2px solid var(--gold);
    }
    .sidebar-tip {
        background: rgba(245, 197, 66, 0.06);
        border: 1px solid rgba(245, 197, 66, 0.2);
        border-radius: var(--radius-sm);
        padding: 16px;
        font-size: 13px;
        color: var(--text-sub);
        line-height: 1.7;
    }
    .sidebar-tip i {
        color: var(--gold);
        margin-right: 4px;
    }

    /* ===== Scenarios Section ===== */
    .scenarios-section {
        background: var(--bg-secondary);
        padding: 72px 0;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }
    .section-head {
        text-align: center;
        max-width: 640px;
        margin: 0 auto 44px;
    }
    .section-head h2 {
        font-size: 30px;
    }
    .section-head p {
        font-size: 15px;
        margin-bottom: 0;
    }
    .scenario-list {
        max-width: 880px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .scenario-item {
        display: flex;
        align-items: center;
        gap: 24px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 24px 28px;
        transition: all var(--transition);
    }
    .scenario-item:hover {
        border-color: rgba(245, 197, 66, 0.4);
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }
    .scenario-icon {
        width: 52px;
        height: 52px;
        flex-shrink: 0;
        background: rgba(139, 92, 246, 0.1);
        border: 1px solid var(--violet);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--violet-light);
        font-size: 20px;
    }
    .scenario-content {
        flex: 1;
    }
    .scenario-content h3 {
        font-size: 17px;
        margin-bottom: 4px;
    }
    .scenario-content p {
        font-size: 14px;
        margin-bottom: 0;
    }
    .scenario-link {
        color: var(--text-muted);
        font-size: 16px;
        padding: 12px;
        border-radius: 50%;
        transition: all var(--transition);
    }
    .scenario-link:hover {
        color: var(--gold);
        background: rgba(245, 197, 66, 0.08);
    }

    /* ===== Steps Section ===== */
    .steps-section {
        padding: 72px 0;
    }
    .steps-row {
        display: flex;
        gap: 24px;
        flex-wrap: wrap;
    }
    .step-item {
        flex: 1 1 calc(25% - 18px);
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px 24px;
        position: relative;
        transition: all var(--transition);
    }
    .step-item:hover {
        box-shadow: var(--shadow-lg);
        border-color: rgba(245, 197, 66, 0.3);
    }
    .step-num {
        font-size: 32px;
        font-weight: 800;
        color: rgba(245, 197, 66, 0.28);
        margin-bottom: 12px;
        line-height: 1;
    }
    .step-item h3 {
        font-size: 17px;
        margin-bottom: 8px;
    }
    .step-item p {
        font-size: 13px;
        margin-bottom: 0;
    }

    /* ===== FAQ Section ===== */
    .faq-section {
        background: var(--bg-secondary);
        padding: 72px 0;
        border-top: 1px solid var(--border);
    }
    .faq-list {
        max-width: 860px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: border-color var(--transition), box-shadow var(--transition);
    }
    .faq-item.active {
        border-color: rgba(245, 197, 66, 0.45);
        box-shadow: var(--shadow-lg);
    }
    .faq-toggle {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 22px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        text-align: left;
        transition: color var(--transition);
    }
    .faq-toggle:hover {
        color: var(--gold);
    }
    .faq-item.active .faq-toggle {
        color: var(--gold);
    }
    .faq-icon {
        width: 24px;
        height: 24px;
        flex-shrink: 0;
        border-radius: 50%;
        background: rgba(139, 92, 246, 0.1);
        color: var(--violet-light);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        transition: transform 0.3s ease, background 0.3s ease;
    }
    .faq-item.active .faq-icon {
        transform: rotate(45deg);
        background: rgba(245, 197, 66, 0.15);
        color: var(--gold);
    }
    .faq-answer {
        display: none;
        padding: 0 22px 20px;
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.75;
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 72px 0;
    }
    .cta-panel {
        background: linear-gradient(135deg, rgba(11, 14, 20, 0.9) 0%, rgba(18, 23, 36, 0.95) 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        border: 1px solid rgba(245, 197, 66, 0.2);
        border-radius: 16px;
        padding: 52px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-panel::before {
        content: '';
        position: absolute;
        inset: 0;
        background: radial-gradient(circle at 50% 0%, rgba(245, 197, 66, 0.08), transparent 60%);
        pointer-events: none;
    }
    .cta-panel h2 {
        font-size: 28px;
        margin-bottom: 12px;
        position: relative;
    }
    .cta-panel p {
        font-size: 15px;
        margin-bottom: 28px;
        max-width: 560px;
        margin-left: auto;
        margin-right: auto;
        position: relative;
    }
    .cta-panel .btn {
        position: relative;
    }

    /* ===== Footer ===== */
    .footer {
        background: #05070C;
        border-top: 1px solid rgba(245, 197, 66, 0.35);
        padding: 56px 24px 24px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 40px;
        max-width: 1200px;
        margin: 0 auto;
    }
    .footer-brand .logo {
        margin-bottom: 12px;
    }
    .footer-brand p {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 18px;
        max-width: 280px;
    }
    .footer-social {
        display: flex;
        gap: 12px;
    }
    .footer-social a {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-sub);
        font-size: 14px;
        transition: all var(--transition);
    }
    .footer-social a:hover {
        border-color: var(--gold);
        color: var(--gold);
        transform: translateY(-2px);
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        margin-bottom: 16px;
    }
    .footer-col ul li {
        margin-bottom: 8px;
    }
    .footer-col ul a {
        font-size: 14px;
        color: var(--text-sub);
        transition: color var(--transition);
    }
    .footer-col ul a:hover {
        color: var(--gold);
    }
    .footer-contact li {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .footer-contact i {
        color: var(--gold);
        width: 16px;
        text-align: center;
    }
    .footer-bottom {
        max-width: 1200px;
        margin: 36px auto 0;
        padding-top: 20px;
        border-top: 1px solid var(--border);
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 12px;
        color: var(--text-muted);
        flex-wrap: wrap;
        gap: 10px;
    }
    .footer-bottom .links a {
        color: var(--text-muted);
        margin-left: 16px;
        transition: color var(--transition);
    }
    .footer-bottom .links a:hover {
        color: var(--gold);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .steps-row {
            gap: 16px;
        }
        .step-item {
            flex: 1 1 calc(50% - 8px);
        }
    }

    @media (max-width: 640px) {
        .container {
            padding: 0 16px;
        }
        .row {
            margin-left: 0;
            margin-right: 0;
        }
        .row .columns {
            padding-left: 16px;
            padding-right: 16px;
        }
        h1 {
            font-size: 26px;
        }
        h2 {
            font-size: 24px;
        }
        .top-info-inner {
            font-size: 11px;
        }
        .top-safe-tip i {
            display: none;
        }
        .top-actions {
            gap: 10px;
        }
        .nav-container {
            height: 60px;
            gap: 12px;
        }
        .logo span:last-child {
            font-size: 17px;
        }
        .nav-toggle {
            display: inline-flex;
        }
        .nav-links {
            display: none;
            position: absolute;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
            flex-direction: column;
            align-items: stretch;
            padding: 12px 16px 20px;
            gap: 4px;
            z-index: 200;
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links a {
            border-bottom: none;
            border-left: 2px solid transparent;
            padding: 12px 14px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            border-bottom: none;
            border-left-color: var(--gold);
            background: rgba(245, 197, 66, 0.05);
        }
        .nav-cta {
            margin-left: 0;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .nav-cta .btn {
            width: 100%;
        }
        .page-head {
            padding: 40px 0 36px;
        }
        .page-head h1 {
            font-size: 26px;
        }
        .page-head-sub {
            font-size: 15px;
        }
        .category-main {
            padding: 40px 0;
        }
        .text-image-block,
        .text-image-block.reverse {
            flex-direction: column;
        }
        .ti-media {
            flex: 1 1 auto;
            min-height: 180px;
        }
        .ti-body {
            padding: 24px 20px;
        }
        .ti-body h2 {
            font-size: 19px;
        }
        .scenario-item {
            flex-direction: column;
            text-align: center;
            gap: 14px;
            padding: 24px 18px;
        }
        .scenario-icon {
            margin: 0 auto;
        }
        .scenario-link {
            display: none;
        }
        .steps-row {
            flex-direction: column;
        }
        .step-item {
            flex: 1 1 100%;
        }
        .cta-section {
            padding: 48px 0;
        }
        .cta-panel {
            padding: 36px 24px;
        }
        .cta-panel h2 {
            font-size: 22px;
        }
        .btn-lg {
            width: 100%;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-brand p {
            max-width: 100%;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .footer-bottom .links a {
            margin: 0 8px;
        }
    }

    @media (max-width: 520px) {
        .top-safe-tip {
            max-width: 180px;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }
        .top-actions {
            gap: 8px;
        }
        .top-actions a {
            font-size: 11px;
        }
    }

/* roulang page: category2 */
:root {
  --bg: #0B0E14;
  --bg-alt: #121724;
  --card: #171E2B;
  --main: #F5C542;
  --main-hover: #FFD966;
  --main-active: #D4A832;
  --accent: #8B5CF6;
  --accent-light: #C4B5FD;
  --success: #34D399;
  --warning: #F87171;
  --text: #E8ECF4;
  --text-2: #9AA7B8;
  --text-3: #667085;
  --border: #232B3A;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --transition: 0.2s ease;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--main); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.3; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* 顶部信息条 */
.topbar {
  background: #05070C;
  border-bottom: 1px solid var(--border);
  min-height: 36px;
  display: flex;
  align-items: center;
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 36px; }
.topbar-item { font-size: 12px; color: var(--text-2); display: inline-flex; align-items: center; gap: 8px; }
.topbar-item i { color: var(--main); }
.topbar-action { font-size: 12px; color: var(--main); font-weight: 600; }
.topbar-action i { margin-right: 4px; }
.topbar-action:hover { color: #fff; }

/* 主导航 */
.main-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.nav-container { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: var(--main); }
.logo-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--main), #B8860B);
  color: #0B0E14;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.5px;
  flex: 0 0 auto;
}
.logo:hover { color: var(--main-hover); }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links > li { margin: 0; }
.nav-links > li > a { color: var(--text); font-size: 15px; font-weight: 500; display: block; position: relative; padding: 26px 0 22px; }
.nav-links > li > a:hover, .nav-links > li > a.active { color: var(--main); }
.nav-links > li > a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--main);
}
.nav-links .nav-cta { padding-left: 8px; }
.nav-links .nav-cta a { padding: 0; display: inline-flex; }
.nav-links .nav-cta a::after { display: none; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 24px; padding: 8px; }
.nav-toggle:focus { outline: 2px solid var(--accent); border-radius: 4px; }

/* 页头区 */
.page-hero {
  padding: 64px 0 60px;
  background:
    linear-gradient(180deg, rgba(11,14,20,0.84), rgba(11,14,20,0.97)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.breadcrumb { font-size: 13px; color: var(--text-3); display: flex; gap: 8px; margin-bottom: 18px; }
.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--main); }
.page-hero h1 { font-size: 38px; line-height: 1.25; margin: 0 0 16px; max-width: 820px; }
.page-hero h1 .highlight { color: var(--main); }
.page-hero-desc { font-size: 17px; color: var(--text-2); max-width: 620px; margin: 0 0 28px; }
.hero-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-badges .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(23,30,43,0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-2);
}
.hero-badges .badge i { color: var(--success); }

/* 大图横幅 */
.banner-section { padding: 56px 0; }
.banner-box {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  box-shadow: var(--shadow);
}
.banner-box::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11,14,20,0.74);
}
.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 72px 24px;
}
.banner-content h2 { font-size: 30px; margin-bottom: 14px; }
.banner-content p { color: var(--text-2); font-size: 16px; max-width: 560px; margin: 0 auto 28px; }

/* 通用区块 */
.section-head { text-align: center; margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid var(--accent);
  color: var(--accent-light);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-head h2 { font-size: 30px; margin-bottom: 12px; }
.section-head p { font-size: 15px; color: var(--text-2); max-width: 560px; margin: 0 auto; }

/* 宽幅卡片 */
.topic-section { padding: 80px 0; }
.topic-card {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-bottom: 28px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.topic-card:hover {
  border-color: rgba(245,197,66,0.45);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.topic-card.flip { flex-direction: row-reverse; }
.topic-img { flex: 0 0 260px; border-radius: 12px; overflow: hidden; }
.topic-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.topic-content { flex: 1; }
.topic-content h3 { font-size: 22px; margin-bottom: 10px; }
.topic-content p { color: var(--text-2); font-size: 15px; margin-bottom: 16px; }
.topic-list { list-style: none; margin-bottom: 20px; }
.topic-list li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 10px;
}
.topic-list li::before {
  content: "\f058";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--main);
}
.topic-more { color: var(--accent-light); font-size: 14px; font-weight: 600; }
.topic-more i { margin-left: 6px; transition: transform 0.2s ease; }
.topic-more:hover i { transform: translateX(4px); }

/* 适用场景 */
.scenario-section {
  background: var(--bg-alt);
  padding: 64px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.scenario-section .section-head { margin-bottom: 32px; }
.scenario-item {
  padding: 24px 12px;
  border-left: 2px solid var(--accent);
  margin-bottom: 0;
}
.scenario-item i { color: var(--main); font-size: 22px; margin-bottom: 12px; display: block; }
.scenario-item h3 { font-size: 18px; margin-bottom: 8px; }
.scenario-item p { font-size: 14px; color: var(--text-2); margin: 0; line-height: 1.7; }

/* FAQ */
.faq-section { padding: 80px 0; }
.faq-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(245,197,66,0.4); }
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  font-size: 15px;
  font-weight: 600;
  padding: 20px 24px;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-question:hover { color: var(--main); }
.faq-question .icon {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(139,92,246,0.12);
  color: var(--accent-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
  color: var(--main);
  background: rgba(245,197,66,0.12);
}
.faq-answer { display: none; padding: 0 24px 22px; font-size: 14px; color: var(--text-2); line-height: 1.8; }
.faq-item.open .faq-answer { display: block; }

/* CTA */
.cta-section { padding: 72px 0; }
.cta-box {
  background: linear-gradient(135deg, rgba(139,92,246,0.12), rgba(245,197,66,0.08)), var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 56px 48px;
  text-align: center;
}
.cta-box h2 { font-size: 30px; margin-bottom: 12px; }
.cta-box p { color: var(--text-2); font-size: 15px; margin: 0 0 28px; }
.btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 0;
  transition: all 0.2s ease;
  line-height: 1;
}
.btn-primary { background: var(--main); color: #0B0E14; }
.btn-primary:hover { background: var(--main-hover); color: #0B0E14; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,197,66,0.25); }
.btn-primary:active { transform: translateY(0); background: var(--main-active); }
.btn-secondary { background: transparent; color: var(--accent-light); border: 1px solid var(--accent); }
.btn-secondary:hover { background: rgba(139,92,246,0.12); color: #E8ECF4; transform: translateY(-2px); }
.btn-secondary:active { background: rgba(139,92,246,0.2); }
.btn-sm { height: 38px; padding: 0 22px; font-size: 14px; }
.btn-lg { height: 52px; padding: 0 40px; font-size: 16px; }

/* 页脚 */
.footer {
  background: #05070C;
  border-top: 3px solid rgba(245,197,66,0.5);
  padding: 64px 24px 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-2); line-height: 1.7; margin: 0 0 16px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  font-size: 14px;
}
.footer-social a:hover { color: var(--main); border-color: var(--main); }
.footer-col h4 { font-size: 15px; margin-bottom: 14px; color: var(--text); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; font-size: 14px; color: var(--text-2); }
.footer-col a { color: var(--text-2); }
.footer-col a:hover { color: var(--main); }
.footer-contact li { display: flex; gap: 8px; align-items: flex-start; }
.footer-contact i { color: var(--main); margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--text-3);
}
.footer-bottom .links a { color: var(--text-3); margin-left: 16px; }
.footer-bottom .links a:hover { color: var(--main); }

/* 响应式 */
@media screen and (max-width: 1024px) {
  .page-hero h1 { font-size: 34px; }
  .topic-card { gap: 24px; padding: 28px; }
  .topic-img { flex: 0 0 210px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media screen and (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 20px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.45);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-links > li { margin: 0; }
  .nav-links > li > a { padding: 14px 0; border-bottom: 1px solid var(--border); }
  .nav-links > li > a.active::after { display: none; }
  .nav-links .nav-cta { padding: 14px 0 0; }
  .nav-links .nav-cta a { border: 0; padding: 0; }
  .page-hero { padding: 48px 0 44px; }
  .page-hero h1 { font-size: 28px; }
  .topic-card, .topic-card.flip { flex-direction: column; gap: 20px; padding: 24px; }
  .topic-img { flex: none; width: 100%; }
  .banner-content { padding: 48px 20px; }
  .banner-content h2 { font-size: 24px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 25px; }
  .btn-group { flex-direction: column; align-items: stretch; }
  .btn-group .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-bottom .links a { margin-left: 0; margin-right: 16px; }
}

@media screen and (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo { font-size: 19px; }
  .topbar-item span.hide-sm { display: none; }
  .page-hero h1 { font-size: 25px; }
  .section-head h2 { font-size: 25px; }
}