/* roulang page: index */
:root {
  --primary: #0a1628;
  --primary-light: #152238;
  --primary-mid: #1e3050;
  --secondary: #d4a84b;
  --secondary-light: #e8c86a;
  --secondary-dark: #b8923a;
  --accent: #f0d080;
  --bg-body: #060e1a;
  --bg-card: #0f1e32;
  --bg-card-hover: #162a44;
  --bg-section: #0a1424;
  --bg-section-alt: #0d1a2e;
  --text-primary: #f0f0f0;
  --text-secondary: #b0b8c8;
  --text-muted: #6a7a8a;
  --text-link: #d4a84b;
  --border-color: #1e3050;
  --border-light: #2a4060;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 12px 40px rgba(0,0,0,0.4);
  --shadow-sm: 0 6px 20px rgba(0,0,0,0.25);
  --shadow-glow: 0 0 30px rgba(212,168,75,0.15);
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --container: 1200px;
  --header-h: 76px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-body);color:var(--text-primary);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--text-link);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--secondary-light)}
img{max-width:100%;height:auto;display:block}
button,.btn{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all var(--transition)}
input,textarea{font-family:inherit;outline:none;border:none}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* ===== Header / Nav ===== */
.header{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:rgba(10,22,40,0.92);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-color);
  height:var(--header-h);transition:background var(--transition);
}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.header-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--secondary);letter-spacing:1px;flex-shrink:0}
.header-logo:hover{color:var(--secondary-light)}
.header-logo img{height:36px;width:auto}
.header-nav{display:flex;align-items:center;gap:8px}
.header-nav a{
  display:flex;align-items:center;gap:6px;
  padding:8px 20px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;color:var(--text-secondary);
  transition:all var(--transition);position:relative;
}
.header-nav a:hover,.header-nav a.active{color:var(--text-primary);background:rgba(212,168,75,0.12)}
.header-nav a.active{color:var(--secondary)}
.header-nav a.active::after{content:'';position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--secondary);border-radius:2px}
.header-cta{
  display:flex;align-items:center;gap:12px;flex-shrink:0;
}
.header-cta .btn-ghost{
  padding:8px 18px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:500;color:var(--text-secondary);
  background:transparent;border:1px solid var(--border-color);
}
.header-cta .btn-ghost:hover{color:var(--text-primary);border-color:var(--secondary);background:rgba(212,168,75,0.08)}
.header-cta .btn-primary{
  padding:8px 24px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;color:#0a1628;
  background:linear-gradient(135deg,var(--secondary),var(--secondary-light));
  box-shadow:0 4px 16px rgba(212,168,75,0.25);
}
.header-cta .btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(212,168,75,0.35)}
.menu-toggle{display:none;background:none;color:var(--text-primary);font-size:26px;padding:4px 8px;border-radius:4px}
@media(max-width:920px){
  .menu-toggle{display:block}
  .header-nav{position:fixed;top:var(--header-h);left:0;width:100%;flex-direction:column;background:rgba(10,22,40,0.98);backdrop-filter:blur(20px);padding:16px 24px 24px;gap:4px;border-bottom:1px solid var(--border-color);display:none}
  .header-nav.open{display:flex}
  .header-nav a{padding:12px 16px;width:100%;justify-content:center;font-size:16px}
  .header-cta .btn-ghost{display:none}
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:85vh;display:flex;align-items:center;
  background:linear-gradient(135deg,#060e1a 0%,#0a1628 40%,#152238 100%);
  overflow:hidden;margin-top:var(--header-h);
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity:0.25;mix-blend-mode:overlay;
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(135deg,rgba(6,14,26,0.88) 0%,rgba(10,22,40,0.70) 50%,rgba(21,34,56,0.50) 100%);
}
.hero .container{position:relative;z-index:2;padding-top:40px;padding-bottom:60px}
.hero-content{max-width:680px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 18px;border-radius:50px;font-size:13px;font-weight:500;
  background:rgba(212,168,75,0.15);color:var(--secondary);
  border:1px solid rgba(212,168,75,0.2);margin-bottom:20px;
  letter-spacing:0.5px;
}
.hero-badge i{font-size:14px}
.hero-title{font-size:52px;font-weight:800;line-height:1.2;color:var(--text-primary);margin-bottom:16px;letter-spacing:-0.5px}
.hero-title span{color:var(--secondary)}
.hero-desc{font-size:18px;color:var(--text-secondary);line-height:1.7;margin-bottom:32px;max-width:560px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.hero-actions .btn-primary{
  padding:14px 36px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;color:#0a1628;
  background:linear-gradient(135deg,var(--secondary),var(--secondary-light));
  box-shadow:0 6px 24px rgba(212,168,75,0.3);
  display:inline-flex;align-items:center;gap:8px;
}
.hero-actions .btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 36px rgba(212,168,75,0.4)}
.hero-actions .btn-outline{
  padding:13px 32px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:500;color:var(--text-primary);
  border:1px solid var(--border-light);background:rgba(255,255,255,0.04);
  display:inline-flex;align-items:center;gap:8px;
}
.hero-actions .btn-outline:hover{border-color:var(--secondary);background:rgba(212,168,75,0.08);color:var(--secondary)}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px solid var(--border-color)}
.hero-stat h3{font-size:32px;font-weight:700;color:var(--secondary);line-height:1.2}
.hero-stat p{font-size:14px;color:var(--text-muted);margin-top:4px}
@media(max-width:768px){
  .hero{min-height:70vh;}
  .hero-title{font-size:36px}
  .hero-desc{font-size:16px}
  .hero-stats{gap:24px;flex-wrap:wrap}
  .hero-stat h3{font-size:26px}
}
@media(max-width:520px){
  .hero-title{font-size:28px}
  .hero-actions .btn-primary,.hero-actions .btn-outline{width:100%;justify-content:center}
}

/* ===== Section ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-section-alt)}
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:12px}
.section-header h2 span{color:var(--secondary)}
.section-header p{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto}
.section-tag{
  display:inline-block;padding:4px 16px;border-radius:50px;
  font-size:12px;font-weight:600;letter-spacing:1px;
  background:rgba(212,168,75,0.12);color:var(--secondary);
  margin-bottom:12px;text-transform:uppercase;
}
@media(max-width:768px){
  .section{padding:56px 0}
  .section-header h2{font-size:26px}
}

/* ===== Feature Cards ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:var(--bg-card);border-radius:var(--radius);
  padding:36px 28px;border:1px solid var(--border-color);
  transition:all var(--transition);position:relative;overflow:hidden;
}
.feature-card:hover{transform:translateY(-6px);border-color:var(--secondary);box-shadow:var(--shadow-glow)}
.feature-card-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;background:rgba(212,168,75,0.12);color:var(--secondary);margin-bottom:20px}
.feature-card h3{font-size:20px;font-weight:600;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-secondary);line-height:1.7}
@media(max-width:920px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.feature-grid{grid-template-columns:1fr}}

/* ===== Category Cards ===== */
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.category-card{
  display:flex;align-items:center;gap:20px;
  background:var(--bg-card);border-radius:var(--radius);
  padding:24px 28px;border:1px solid var(--border-color);
  transition:all var(--transition);
}
.category-card:hover{transform:translateY(-4px);border-color:var(--secondary);box-shadow:var(--shadow-glow)}
.category-card-img{width:100px;height:80px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--primary-light)}
.category-card-img img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-sm)}
.category-card-info h4{font-size:18px;font-weight:600;margin-bottom:4px}
.category-card-info p{font-size:14px;color:var(--text-muted)}
.category-card-info .badge{display:inline-block;padding:2px 12px;border-radius:50px;font-size:11px;font-weight:600;background:rgba(212,168,75,0.12);color:var(--secondary);margin-top:6px}
@media(max-width:768px){.category-grid{grid-template-columns:1fr}}
@media(max-width:520px){.category-card{flex-direction:column;align-items:flex-start}.category-card-img{width:100%;height:120px}}

/* ===== Content / Post Cards ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--bg-card);border-radius:var(--radius);
  overflow:hidden;border:1px solid var(--border-color);
  transition:all var(--transition);display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-6px);border-color:var(--secondary);box-shadow:var(--shadow-glow)}
.post-card-img{width:100%;height:200px;object-fit:cover;background:var(--primary-light)}
.post-card-body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column}
.post-card-cat{display:inline-block;padding:2px 12px;border-radius:50px;font-size:11px;font-weight:600;background:rgba(212,168,75,0.12);color:var(--secondary);margin-bottom:8px;width:fit-content}
.post-card h3{font-size:18px;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card h3 a{color:var(--text-primary)}
.post-card h3 a:hover{color:var(--secondary)}
.post-card p{font-size:14px;color:var(--text-secondary);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.post-card-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-muted);margin-top:auto;padding-top:12px;border-top:1px solid var(--border-color)}
.post-card-meta i{font-size:13px}
@media(max-width:1024px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.post-grid{grid-template-columns:1fr}}

/* ===== Process / Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step-card{
  background:var(--bg-card);border-radius:var(--radius);
  padding:32px 24px;text-align:center;border:1px solid var(--border-color);
  position:relative;transition:all var(--transition);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--secondary);box-shadow:var(--shadow-glow)}
.step-card::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  width:32px;height:32px;border-radius:50%;
  background:var(--secondary);color:#0a1628;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.step-card-icon{font-size:36px;color:var(--secondary);margin-bottom:16px;margin-top:8px}
.step-card h4{font-size:18px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--text-secondary);line-height:1.6}
@media(max-width:920px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--bg-card);border-radius:var(--radius);
  margin-bottom:12px;border:1px solid var(--border-color);
  overflow:hidden;transition:all var(--transition);
}
.faq-item:hover{border-color:var(--primary-mid)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;cursor:pointer;font-size:16px;font-weight:600;
  color:var(--text-primary);transition:color var(--transition);
  user-select:none;
}
.faq-q i{font-size:18px;color:var(--text-muted);transition:transform var(--transition)}
.faq-item.active .faq-q i{transform:rotate(180deg);color:var(--secondary)}
.faq-item.active .faq-q{color:var(--secondary)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 0.4s ease, padding 0.3s ease;
  padding:0 24px;color:var(--text-secondary);font-size:15px;line-height:1.7;
}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 20px}

/* ===== CTA ===== */
.cta-section{
  background:linear-gradient(135deg,#0a1628 0%,#152238 50%,#1a2a4a 100%);
  border-radius:var(--radius-lg);padding:60px 48px;
  text-align:center;position:relative;overflow:hidden;
  border:1px solid var(--border-color);
}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity:0.08;mix-blend-mode:overlay;
}
.cta-section .container{position:relative;z-index:1}
.cta-section h2{font-size:32px;font-weight:700;margin-bottom:12px}
.cta-section p{font-size:16px;color:var(--text-secondary);max-width:560px;margin:0 auto 28px}
.cta-section .btn-primary{
  padding:14px 40px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;color:#0a1628;
  background:linear-gradient(135deg,var(--secondary),var(--secondary-light));
  box-shadow:0 6px 24px rgba(212,168,75,0.3);
  display:inline-flex;align-items:center;gap:8px;
}
.cta-section .btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 36px rgba(212,168,75,0.4)}
@media(max-width:768px){.cta-section{padding:40px 24px}.cta-section h2{font-size:26px}}

/* ===== Footer ===== */
.footer{
  background:var(--primary);border-top:1px solid var(--border-color);
  padding:48px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand .header-logo{margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;max-width:320px}
.footer-col h5{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-muted);padding:4px 0;transition:color var(--transition)}
.footer-col a:hover{color:var(--secondary)}
.footer-bottom{
  border-top:1px solid var(--border-color);padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-muted);
}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--secondary)}
@media(max-width:920px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:8px;text-align:center}}

/* ===== Shared Utilities ===== */
.text-center{text-align:center}
.mb-12{margin-bottom:12px}
.mb-24{margin-bottom:24px}
.mb-32{margin-bottom:32px}
.mb-48{margin-bottom:48px}
.gap-12{gap:12px}
.flex-center{display:flex;align-items:center;justify-content:center}
.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted);font-size:16px;background:var(--bg-card);border-radius:var(--radius);border:1px dashed var(--border-color)}

/* ===== Category Page Hero (small) ===== */
.cat-hero{
  position:relative;padding:100px 0 60px;margin-top:var(--header-h);
  background:linear-gradient(135deg,#060e1a 0%,#0a1628 60%,#152238 100%);
  overflow:hidden;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity:0.12;mix-blend-mode:overlay;
}
.cat-hero .container{position:relative;z-index:1}
.cat-hero h1{font-size:38px;font-weight:700;margin-bottom:8px}
.cat-hero p{font-size:16px;color:var(--text-secondary);max-width:600px}

/* ===== Article Page ===== */
.article-hero{
  position:relative;padding:100px 0 60px;margin-top:var(--header-h);
  background:linear-gradient(135deg,#060e1a 0%,#0a1628 60%,#152238 100%);
  overflow:hidden;
}
.article-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity:0.10;mix-blend-mode:overlay;
}
.article-hero .container{position:relative;z-index:1}
.article-hero .breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);margin-bottom:16px}
.article-hero .breadcrumb a{color:var(--text-muted)}
.article-hero .breadcrumb a:hover{color:var(--secondary)}
.article-hero h1{font-size:36px;font-weight:700;margin-bottom:12px;max-width:800px}
.article-hero .meta{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--text-muted)}
.article-body{padding:48px 0 64px}
.article-content{max-width:800px;margin:0 auto;background:var(--bg-card);border-radius:var(--radius);padding:40px 48px;border:1px solid var(--border-color);line-height:1.9;font-size:16px;color:var(--text-primary)}
.article-content h2{font-size:24px;font-weight:700;margin:32px 0 16px;color:var(--text-primary)}
.article-content h3{font-size:20px;font-weight:600;margin:24px 0 12px;color:var(--text-primary)}
.article-content p{margin-bottom:16px;color:var(--text-secondary)}
.article-content img{border-radius:var(--radius-sm);margin:16px 0;width:100%}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:16px;color:var(--text-secondary)}
.article-content li{margin-bottom:8px}
.article-content a{color:var(--secondary);text-decoration:underline}
.article-content a:hover{color:var(--secondary-light)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:24px;border-top:1px solid var(--border-color)}
.article-nav a{font-size:15px;color:var(--text-secondary);display:flex;align-items:center;gap:8px}
.article-nav a:hover{color:var(--secondary)}
@media(max-width:768px){
  .article-hero h1{font-size:28px}
  .article-content{padding:24px 20px}
  .article-nav{flex-direction:column;align-items:center}
}

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #e8302a;
  --primary-dark: #c4201a;
  --primary-light: #ff4d47;
  --accent: #f5a623;
  --accent-light: #ffc107;
  --bg-dark: #0b0e14;
  --bg-card: #151a24;
  --bg-section: #0f131c;
  --bg-light: #f8f9fa;
  --text-primary: #f0f2f5;
  --text-secondary: #a0a8b4;
  --text-muted: #6c757d;
  --border-color: #2a3040;
  --border-light: #e0e4e8;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.5);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --container-max: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }

/* ===== Header & Nav ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}
.header-logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 1px;
}
.header-logo i { color: var(--primary); font-size: 1.8rem; }
.header-logo:hover { color: var(--primary-light); }
.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-nav a {
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.header-nav a i { font-size: 0.9rem; }
.header-nav a:hover, .header-nav a.active {
  color: var(--text-primary);
  background: rgba(232, 48, 42, 0.15);
}
.header-nav a.active { color: var(--primary-light); }
.header-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 22px !important;
  border-radius: 30px !important;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 15px rgba(232, 48, 42, 0.35);
}
.header-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 25px rgba(232, 48, 42, 0.5); }
.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.6rem; cursor: pointer; padding: 4px; }

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 60px 0 40px;
  background: linear-gradient(135deg, #0b0e14 0%, #151a24 50%, #0f131c 100%);
  border-bottom: 1px solid var(--border-color);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') no-repeat center / cover;
  opacity: 0.12;
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 2; }
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.article-breadcrumb a { color: var(--text-muted); }
.article-breadcrumb a:hover { color: var(--primary-light); }
.article-breadcrumb span { color: var(--text-secondary); }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.article-category {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}
.article-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-date i { font-size: 0.85rem; }
.article-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.article-hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 800px;
  line-height: 1.7;
}

/* ===== Article Content ===== */
.article-main {
  padding: 50px 0 60px;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.article-body {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text-primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}
.article-body p {
  margin-bottom: 18px;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}
.article-body ul, .article-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
  color: var(--text-secondary);
}
.article-body li { margin-bottom: 8px; }
.article-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--border-color);
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(232, 48, 42, 0.08);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-body a { color: var(--primary-light); text-decoration: underline; }
.article-body a:hover { color: var(--accent); }

/* ===== Article Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.sidebar-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h4 i { color: var(--primary); }
.sidebar-list { list-style: none; padding: 0; }
.sidebar-list li { margin-bottom: 12px; }
.sidebar-list a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  transition: var(--transition);
}
.sidebar-list a:hover { color: var(--primary-light); }
.sidebar-list a i { margin-top: 3px; color: var(--primary); font-size: 0.8rem; }
.sidebar-tag {
  display: inline-block;
  background: rgba(232, 48, 42, 0.1);
  color: var(--text-secondary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin: 3px 4px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.sidebar-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.sidebar-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  text-align: center;
}
.sidebar-cta h5 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.sidebar-cta p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 16px; }
.sidebar-cta .btn { background: #fff; color: var(--primary); }
.sidebar-cta .btn:hover { background: var(--accent); color: #000; }

/* ===== Not Found ===== */
.not-found-wrap {
  text-align: center;
  padding: 60px 20px;
}
.not-found-wrap i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
.not-found-wrap h2 { font-size: 2rem; margin-bottom: 12px; }
.not-found-wrap p { color: var(--text-secondary); margin-bottom: 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 15px rgba(232,48,42,0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,48,42,0.4); color: #fff; }
.btn-outline { background: transparent; color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(232,48,42,0.08); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }

/* ===== Footer ===== */
.footer {
  background: #080b10;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 0;
  margin-top: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}
.footer-brand .header-logo { margin-bottom: 14px; display: inline-flex; }
.footer-brand p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; max-width: 360px; }
.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr 260px; gap: 28px; }
  .article-hero h1 { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header-nav { display: none; }
  .mobile-toggle { display: block; }
  .header-nav.open { display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: rgba(11,14,20,0.98); padding: 16px 20px; gap: 4px; border-bottom: 1px solid var(--border-color); }
  .article-layout { grid-template-columns: 1fr; }
  .article-body { padding: 24px; }
  .article-hero h1 { font-size: 1.8rem; }
  .article-hero { padding: 40px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .article-meta { gap: 10px; }
}
@media (max-width: 520px) {
  .article-hero h1 { font-size: 1.5rem; }
  .article-body { padding: 16px; }
  .article-body h2 { font-size: 1.3rem; }
  .sidebar-card { padding: 20px; }
  .header-inner { height: 60px; }
  .header-logo { font-size: 1.3rem; }
}

/* roulang page: category1 */
/* ===== CSS 设计变量 ===== */
:root {
  --primary: #0b1a2a;
  --primary-light: #132b41;
  --secondary: #d4a017;
  --secondary-hover: #b88a12;
  --accent: #e63946;
  --accent-hover: #c92d3a;
  --bg-light: #f8f9fa;
  --bg-dark: #0b1a2a;
  --text-dark: #1a1a2e;
  --text-muted: #6c757d;
  --text-light: #f8f9fa;
  --border: #e0e0e0;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 24px rgba(0,0,0,0.07);
  --card-shadow-hover: 0 12px 40px rgba(0,0,0,0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 60px;
  --space-xl: 100px;
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; margin-bottom: var(--space-sm); }
h3 { font-size: 1.4rem; }
p { margin-bottom: 1rem; color: var(--text-muted); }
p:last-child { margin-bottom: 0; }

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

/* ===== 头部 & 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--primary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.header-logo i {
  color: var(--secondary);
  font-size: 1.6rem;
}
.header-logo:hover { color: var(--secondary); }
.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.75);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}
.header-nav a i { font-size: 1rem; }
.header-nav a:hover,
.header-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}
.header-nav a.active {
  background: var(--secondary);
  color: var(--primary);
  font-weight: 600;
}
.header-nav a.active i { color: var(--primary); }
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta .btn-primary {
  padding: 10px 28px;
  border-radius: var(--radius-sm);
  background: var(--secondary);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
}
.header-cta .btn-primary:hover {
  background: var(--secondary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212,160,23,0.35);
}
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.mobile-toggle span {
  width: 26px;
  height: 2.5px;
  background: #fff;
  border-radius: 3px;
  transition: var(--transition);
}

/* ===== Hero / Banner ===== */
.page-banner {
  position: relative;
  padding: 140px 0 80px;
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,26,42,0.88) 30%, rgba(11,26,42,0.55) 100%);
  z-index: 1;
}
.page-banner .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.page-banner h1 {
  color: #fff;
  font-size: 3.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-banner h1 i { color: var(--secondary); margin-right: 12px; }
.page-banner p {
  color: rgba(255,255,255,0.85);
  font-size: 1.15rem;
  max-width: 720px;
  margin: 0 auto 24px;
  line-height: 1.8;
}
.page-banner .banner-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.page-banner .banner-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 50px;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  backdrop-filter: blur(4px);
}
.page-banner .banner-tags span i { color: var(--secondary); }

/* ===== 板块通用 ===== */
.section {
  padding: var(--space-lg) 0;
}
.section-alt {
  background: var(--card-bg);
}
.section-dark {
  background: var(--primary);
  color: #fff;
}
.section-dark h2,
.section-dark h3,
.section-dark .section-subtitle { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.8); }
.section-header {
  text-align: center;
  margin-bottom: var(--space-md);
}
.section-header h2 {
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--secondary);
  border-radius: 3px;
  margin: 12px auto 0;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 8px auto 0;
}

/* ===== 赛事分类入口 ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.cat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--secondary);
}
.cat-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(212,160,23,0.12);
  color: var(--secondary);
  font-size: 1.8rem;
  transition: var(--transition);
}
.cat-card:hover .icon {
  background: var(--secondary);
  color: #fff;
}
.cat-card h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--primary); }
.cat-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
.cat-card .badge {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 16px;
  border-radius: 50px;
  background: var(--secondary);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
}

/* ===== 热门赛事推荐 ===== */
.race-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.race-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.race-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
}
.race-card .race-img {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--primary-light);
}
.race-card .race-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.race-card:hover .race-img img { transform: scale(1.06); }
.race-card .race-img .race-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  border-radius: 50px;
  background: var(--secondary);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  z-index: 2;
}
.race-card .race-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.race-card .race-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--primary);
}
.race-card .race-body p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  flex: 1;
}
.race-card .race-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.race-card .race-meta span {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.race-card .race-meta span i { color: var(--secondary); }
.race-card .race-meta .btn-outline {
  padding: 6px 18px;
  border-radius: 50px;
  border: 1.5px solid var(--secondary);
  color: var(--secondary);
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
  background: transparent;
}
.race-card .race-meta .btn-outline:hover {
  background: var(--secondary);
  color: var(--primary);
}

/* ===== 数据看板 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
}
.stat-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
}
.stat-card .num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card .label {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}
.stat-card .label i { margin-right: 6px; color: var(--secondary); }

/* ===== 观赛流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}
.step-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
  text-align: center;
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
}
.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--secondary);
  color: var(--primary);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(212,160,23,0.35);
}
.step-card .step-icon {
  font-size: 2.4rem;
  color: var(--secondary);
  margin-bottom: 16px;
  margin-top: 8px;
}
.step-card h3 { font-size: 1.2rem; margin-bottom: 10px; color: var(--primary); }
.step-card p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--secondary); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  background: none;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  gap: 16px;
}
.faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.1rem; flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 18px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,26,42,0.9) 40%, rgba(11,26,42,0.7) 100%);
}
.cta-section .container {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-lg) 24px;
}
.cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }
.cta-section .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 48px;
  border-radius: 50px;
  background: var(--secondary);
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--transition);
}
.cta-section .btn-cta:hover {
  background: var(--secondary-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(212,160,23,0.4);
}

/* ===== 页脚 ===== */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.8);
  padding: var(--space-lg) 0 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .header-logo { margin-bottom: 14px; color: #fff; }
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.95rem; max-width: 320px; line-height: 1.8; }
.footer-col h5 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: var(--secondary);
  border-radius: 3px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--secondary); padding-left: 6px; }
.footer-col a i { width: 20px; color: var(--secondary); margin-right: 6px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--secondary); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .race-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .page-banner h1 { font-size: 2.6rem; }
}

@media (max-width: 768px) {
  .header .container { height: 64px; }
  .header-nav { display: none; }
  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--primary);
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .header-nav.open a { padding: 12px 20px; border-radius: var(--radius-sm); }
  .header-cta .btn-primary { padding: 8px 20px; font-size: 0.85rem; }
  .mobile-toggle { display: flex; }
  .page-banner { padding: 110px 0 60px; }
  .page-banner h1 { font-size: 2rem; }
  .page-banner p { font-size: 1rem; }
  .page-banner .banner-tags span { padding: 6px 14px; font-size: 0.8rem; }
  h2 { font-size: 1.6rem; }
  .section { padding: var(--space-md) 0; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cat-card { padding: 24px 16px; }
  .race-grid { grid-template-columns: 1fr; gap: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card { padding: 20px 12px; }
  .stat-card .num { font-size: 2rem; }
  .steps-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .cta-section h2 { font-size: 1.6rem; }
  .cta-section .btn-cta { padding: 14px 32px; font-size: 1rem; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-banner h1 { font-size: 1.6rem; }
  .page-banner p { font-size: 0.92rem; }
  .cat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .race-card .race-img { height: 160px; }
  .header-logo { font-size: 1.2rem; }
  .header-logo i { font-size: 1.3rem; }
  .section-header h2 { font-size: 1.4rem; }
}

/* ===== 辅助工具 ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }