/* roulang page: index */
:root{
  --primary:#00e5ff;
  --secondary:#ff2d78;
  --bg-deep:#080c14;
  --bg-panel:#0f1622;
  --bg-card:#141d2c;
  --text-main:#e8ecf3;
  --text-muted:#8b95a7;
  --border-light:#1f2a3f;
  --radius-md:12px;
  --radius-lg:22px;
  --shadow-card:0 12px 36px rgba(0,0,0,.38);
  --shadow-neon:0 0 26px rgba(0,229,255,.16);
  --nav-height:72px;
  --section-space:96px;
  --font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);background:var(--bg-deep);color:var(--text-main);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease,opacity .25s ease,transform .25s ease}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-x{max-width:100%}
.section{padding:var(--section-space) 0}
.section-alt{background:var(--bg-panel)}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;margin-bottom:12px}
.section-tag::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:2px;display:inline-block}
.section-head{margin-bottom:48px;max-width:680px}
.section-head h2{font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:12px}
.section-head p{color:var(--text-muted);font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 30px;border-radius:999px;font-size:15px;font-weight:700;transition:all .3s ease;position:relative;overflow:hidden;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--primary),#00b8d4);color:#04121a;box-shadow:0 6px 24px rgba(0,229,255,.28)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 32px rgba(0,229,255,.4);color:#04121a}
.btn-secondary{background:linear-gradient(135deg,var(--secondary),#b8004a);color:#fff;box-shadow:0 6px 24px rgba(255,45,120,.22)}
.btn-secondary:hover{transform:translateY(-3px);box-shadow:0 10px 32px rgba(255,45,120,.38);color:#fff}
.btn-outline{border-color:rgba(0,229,255,.5);color:var(--primary);background:rgba(0,229,255,.06)}
.btn-outline:hover{background:rgba(0,229,255,.14);transform:translateY(-3px);color:var(--primary)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-lg{padding:16px 42px;font-size:16px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.4}
.badge-primary{background:rgba(0,229,255,.12);color:var(--primary);border:1px solid rgba(0,229,255,.3)}
.badge-secondary{background:rgba(255,45,120,.12);color:var(--secondary);border:1px solid rgba(255,45,120,.3)}
.badge-dark{background:rgba(255,255,255,.06);color:var(--text-muted);border:1px solid var(--border-light)}
/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-height);background:rgba(8,12,20,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,229,255,.12);transition:box-shadow .3s ease,background .3s ease}
.site-header.scrolled{background:rgba(8,12,20,.94);box-shadow:0 4px 30px rgba(0,0,0,.4)}
.header-wrap{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height)}
.brand-logo{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text-main);white-space:nowrap}
.brand-badge{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:#0a0e17;font-size:17px;box-shadow:0 0 20px rgba(0,229,255,.25);flex-shrink:0}
.brand-logo:hover{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{position:relative;padding:10px 16px;font-size:15px;font-weight:600;color:var(--text-muted);border-radius:8px;white-space:nowrap}
.nav-link:hover{color:var(--text-main)}
.nav-link::after{content:"";position:absolute;bottom:2px;left:16px;right:16px;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .32s ease}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);text-shadow:0 0 18px rgba(0,229,255,.45)}
.nav-link.active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;background:rgba(0,229,255,.08);border:1px solid rgba(0,229,255,.2);color:var(--primary);font-size:18px;align-items:center;justify-content:center}
.nav-toggle:hover{background:rgba(0,229,255,.15)}
.mobile-menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;background:rgba(8,12,20,.96);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-light);padding:16px 24px 24px;flex-direction:column;gap:6px;z-index:99}
.mobile-menu.open{display:flex}
.mobile-link{padding:12px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--text-muted)}
.mobile-link:hover{background:rgba(255,255,255,.04);color:var(--text-main)}
.mobile-link.active{color:var(--primary);background:rgba(0,229,255,.08)}
.mobile-cta{margin-top:12px;justify-content:center}
/* ===== Hero ===== */
.hero{position:relative;padding:180px 0 110px;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,12,20,.88) 0%,rgba(8,12,20,.72) 50%,var(--bg-deep) 100%)}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 70% 30%,rgba(0,229,255,.12),transparent 60%)}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.3);padding:8px 18px;border-radius:999px;font-size:13px;font-weight:600;color:var(--primary);margin-bottom:24px;backdrop-filter:blur(6px)}
.hero h1{font-size:clamp(34px,5.2vw,60px);font-weight:900;line-height:1.15;letter-spacing:-.03em;background:linear-gradient(120deg,#fff 30%,var(--primary) 70%,var(--secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:22px;max-width:720px}
.hero-desc{font-size:18px;color:var(--text-muted);max-width:600px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:56px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;padding-top:36px;border-top:1px solid rgba(255,255,255,.08)}
.hero-stat{display:flex;flex-direction:column;gap:2px}
.hero-stat .num{font-size:30px;font-weight:800;color:var(--primary);letter-spacing:.02em}
.hero-stat .label{font-size:13px;color:var(--text-muted)}
/* ===== Feature Cards ===== */
.feature-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:36px 30px;height:100%;position:relative;overflow:hidden;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:opacity .35s ease}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-card);border-color:rgba(0,229,255,.35)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:14px;background:rgba(0,229,255,.1);display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--primary);margin-bottom:20px;border:1px solid rgba(0,229,255,.2)}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:12px;letter-spacing:-.01em}
.feature-card p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:0}
/* ===== Category Cards ===== */
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;height:100%;min-height:320px;display:flex;align-items:flex-end;isolation:isolate;cursor:pointer;transition:transform .35s ease,box-shadow .35s ease}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .6s ease}
.category-card::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(8,12,20,.88) 78%);z-index:-1;transition:opacity .3s ease}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-card)}
.category-card:hover img{transform:scale(1.06)}
.category-card__body{padding:32px 30px;width:100%}
.category-card__body h3{font-size:22px;font-weight:800;margin-bottom:8px;letter-spacing:-.01em}
.category-card__body p{color:rgba(232,236,243,.82);font-size:14px;margin-bottom:16px;max-width:360px}
.category-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:700}
.category-link i{transition:transform .3s ease}
.category-card:hover .category-link i{transform:translateX(5px)}
/* ===== News ===== */
.news-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:28px;height:100%;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;display:block}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card);border-color:rgba(0,229,255,.3)}
.news-card__meta{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.news-card__meta time{font-size:13px;color:var(--text-muted)}
.news-card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;color:var(--text-main);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3:hover{color:var(--primary)}
.news-card__desc{color:var(--text-muted);font-size:14px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.read-more{font-size:14px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:8px}
.read-more i{transition:transform .3s ease}
.news-card:hover .read-more i{transform:translateX(5px)}
.empty-tip{padding:60px 20px;text-align:center;color:var(--text-muted);background:var(--bg-card);border:1px dashed var(--border-light);border-radius:var(--radius-lg);font-size:16px}
/* ===== Data Panel ===== */
.hud-panel{background:linear-gradient(135deg,var(--bg-panel),var(--bg-card));border:1px solid rgba(0,229,255,.15);border-radius:var(--radius-lg);padding:48px 40px;position:relative;overflow:hidden}
.hud-panel::before{content:"";position:absolute;top:-80px;left:50%;transform:translateX(-50%);width:400px;height:200px;background:radial-gradient(ellipse,rgba(0,229,255,.14),transparent 70%);pointer-events:none}
.hud-item{text-align:center;padding:20px 16px;position:relative}
.hud-item .num{font-size:42px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.02em}
.hud-item .label{font-size:14px;color:var(--text-muted);margin-top:8px}
.hud-item + .hud-item::after{content:"";position:absolute;left:0;top:25%;bottom:25%;width:1px;background:linear-gradient(180deg,transparent,rgba(0,229,255,.3),transparent)}
/* ===== Process ===== */
.step-card{text-align:center;padding:36px 24px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);height:100%;position:relative;transition:transform .3s ease,border-color .3s ease}
.step-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.3)}
.step-num{width:48px;height:48px;margin:0 auto 18px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#0a0e17;box-shadow:0 0 24px rgba(0,229,255,.25)}
.step-card h4{font-size:17px;font-weight:700;margin-bottom:10px}
.step-card p{color:var(--text-muted);font-size:14px;line-height:1.65;margin-bottom:0}
/* ===== FAQ ===== */
.faq-item{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);margin-bottom:16px;overflow:hidden;transition:border-color .3s ease}
.faq-item:hover{border-color:rgba(0,229,255,.25)}
.faq-item.active{border-color:rgba(0,229,255,.4)}
.faq-question{padding:22px 28px;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;color:var(--text-main);transition:background .3s ease}
.faq-question:hover{background:rgba(255,255,255,.02)}
.faq-question i{color:var(--primary);transition:transform .35s ease;flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 28px 22px;color:var(--text-muted);font-size:14px;line-height:1.75;display:none}
.faq-item.active .faq-answer{display:block;animation:fadeIn .35s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
/* ===== CTA ===== */
.cta-section{position:relative;padding:70px 0;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:rgba(8,12,20,.84)}
.cta-box{position:relative;z-index:1;text-align:center}
.cta-box h2{font-size:clamp(26px,3.4vw,40px);font-weight:800;margin-bottom:14px}
.cta-box p{color:var(--text-muted);font-size:16px;max-width:520px;margin:0 auto 32px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
/* ===== Footer ===== */
.site-footer{background:var(--bg-panel);border-top:1px solid var(--border-light);padding:60px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,255,.4),rgba(255,45,120,.4),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:40px}
.footer-brand .brand-logo{margin-bottom:16px;font-size:18px}
.footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.7;max-width:300px}
.footer-links h4,.footer-contact h4{font-size:15px;font-weight:700;color:var(--text-main);margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-links h4::after,.footer-contact h4::after{content:"";position:absolute;bottom:0;left:0;width:32px;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:2px}
.footer-links a{display:block;color:var(--text-muted);font-size:14px;padding:6px 0}
.footer-links a:hover{color:var(--primary)}
.footer-contact p{color:var(--text-muted);font-size:14px;padding:4px 0}
.footer-bottom{border-top:1px solid var(--border-light);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.footer-bottom p{color:var(--text-muted);font-size:13px}
.footer-bottom .site-domain{font-family:Menlo,Consolas,monospace;color:rgba(0,229,255,.6)}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .hero{padding:150px 0 90px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  :root{--section-space:72px}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:24px}
  .hud-item .num{font-size:32px}
  .hud-item + .hud-item::after{display:none}
  .section-head h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}
@media(max-width:520px){
  .hero{padding:140px 0 70px;text-align:left}
  .hero h1{font-size:32px}
  .hero-desc{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-stats{flex-wrap:wrap;gap:14px}
  .hero-stat{min-width:calc(50% - 14px)}
  .btn-lg{padding:14px 28px;font-size:15px}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;text-align:center}
  .header-tools .btn-primary{display:none}
}
@media(max-width:1024px){
  .grid-x > .cell{padding-left:12px;padding-right:12px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --neon-cyan: #00e5ff;
  --neon-purple: #8b5cf6;
  --accent-danger: #ff3860;
  --accent-success: #10d9a0;
  --text-primary: #e5e7eb;
  --text-secondary: #94a3b8;
  --border-dark: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(0, 229, 255, 0.25);
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --transition: all 0.3s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
}

/* ============ 基础 Reset ============ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
::selection {
  background: rgba(0, 229, 255, 0.3);
  color: #fff;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  line-height: 1;
}
.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  box-shadow: 0 6px 24px rgba(0, 229, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(0, 229, 255, 0.4);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-neon);
  color: var(--neon-cyan);
}
.btn-outline:hover {
  background: rgba(0, 229, 255, 0.1);
  transform: translateY(-2px);
  border-color: var(--neon-cyan);
}
.btn:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-dark);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
  opacity: 0.7;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
  position: relative;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: var(--text-primary);
}
.brand-badge {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
}
.nav-link.active {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.12);
  box-shadow: inset 0 0 0 1px var(--border-neon), 0 0 14px rgba(0, 229, 255, 0.15);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: -2px;
  height: 2px;
  background: var(--neon-cyan);
  box-shadow: 0 0 12px var(--neon-cyan);
}
.nav-link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 30px;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border-neon);
  background: rgba(0, 229, 255, 0.08);
  color: var(--neon-cyan);
  font-size: 1.15rem;
  cursor: pointer;
  transition: var(--transition);
}
.menu-toggle:hover {
  background: rgba(0, 229, 255, 0.16);
}

/* ============ 分类 Hero ============ */
.category-hero {
  position: relative;
  padding: 100px 0 90px;
  background:
    linear-gradient(rgba(10, 14, 23, 0.88), rgba(10, 14, 23, 0.97)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border-neon);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
  opacity: 0.7;
}
.hero-content {
  padding: 20px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 30px;
  border: 1px solid var(--border-neon);
  background: rgba(0, 229, 255, 0.1);
  color: var(--neon-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.15;
  margin: 22px 0 18px;
  letter-spacing: 0.02em;
}
.hero-title span {
  color: var(--neon-cyan);
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.5);
}
.hero-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  font-size: 1.08rem;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 34px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 22px;
  border: 1px solid var(--border-dark);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}
.hero-tags i {
  color: var(--neon-cyan);
}

/* ============ HUD 数据面板 ============ */
.hud-panel {
  position: relative;
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(17, 24, 39, 0.92), rgba(4, 8, 15, 0.92));
  padding: 30px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.1), inset 0 0 30px rgba(0, 229, 255, 0.03);
}
.hud-panel::before,
.hud-panel::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border-color: var(--neon-cyan);
  border-style: solid;
  pointer-events: none;
}
.hud-panel::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
  border-top-left-radius: 12px;
}
.hud-panel::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
  border-bottom-right-radius: 12px;
}
.hud-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--neon-cyan);
  margin-bottom: 18px;
  text-transform: uppercase;
}
.hud-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 12px var(--neon-cyan);
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hud-row {
  display: flex;
  justify-content: space-between;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9rem;
}
.hud-row span {
  color: var(--text-secondary);
}
.hud-row strong {
  color: var(--text-primary);
  font-weight: 700;
}
.hud-state {
  color: var(--accent-success) !important;
}
.hud-progress {
  margin: 22px 0 12px;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}
.hud-progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}
.hud-score {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.hud-score em {
  font-style: normal;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}

/* ============ 通用板块 ============ */
.section-padding {
  padding: 90px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 54px;
}
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid var(--border-neon);
  color: var(--neon-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-primary);
}
.section-title span {
  color: var(--neon-cyan);
}
.section-subtitle {
  color: var(--text-secondary);
  margin-top: 14px;
  font-size: 1rem;
  line-height: 1.8;
}

/* ============ 分类介绍 ============ */
.category-intro {
  background: var(--bg-primary);
}
.mini-card {
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  background: rgba(17, 24, 39, 0.5);
  height: 100%;
  transition: var(--transition);
}
.mini-card:hover {
  border-color: var(--border-neon);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35), 0 0 20px rgba(0, 229, 255, 0.06);
}
.mini-icon {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.12);
  color: var(--neon-cyan);
  font-size: 1.2rem;
  margin-bottom: 16px;
  transition: var(--transition);
}
.mini-card:hover .mini-icon {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
}
.mini-card h3 {
  font-size: 1.08rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.mini-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============ 内容卡片 ============ */
.content-cards {
  background: linear-gradient(180deg, var(--bg-primary), rgba(0, 229, 255, 0.03));
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}
.grid-margin-x .cell {
  margin-bottom: 30px;
}
.category-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-neon);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 229, 255, 0.1);
}
.card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover .card-image img {
  transform: scale(1.05);
}
.card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 65%, rgba(10, 14, 23, 0.6));
}
.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 14px;
  background: rgba(0, 229, 255, 0.92);
  color: #08111f;
  font-size: 0.75rem;
  font-weight: 800;
  border-radius: 20px;
  letter-spacing: 0.04em;
}
.card-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-body h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.4;
}
.card-body p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  flex: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: var(--neon-cyan);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

/* ============ 数据统计 ============ */
.data-stats {
  padding: 90px 0;
  background: linear-gradient(180deg, var(--bg-primary), rgba(0, 229, 255, 0.04));
}
.stats-grid-x {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  position: relative;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 34px 20px 30px;
  text-align: center;
  background: rgba(17, 24, 39, 0.6);
  transition: var(--transition);
}
.stat-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  opacity: 0.6;
}
.stat-card:hover {
  border-color: var(--border-neon);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 229, 255, 0.08);
}
.stat-icon {
  font-size: 1.4rem;
  color: var(--neon-cyan);
  margin-bottom: 10px;
}
.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--neon-cyan);
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  line-height: 1.2;
  text-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}
.stat-label {
  color: var(--text-secondary);
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 600;
}

/* ============ 图文区块 ============ */
.feature-block {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-lg);
}
.feature-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(139, 92, 246, 0.05));
  z-index: 1;
  pointer-events: none;
}
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.feature-list li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-dark);
}
.feature-list li:last-child {
  border-bottom: none;
}
.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.1);
  color: var(--neon-cyan);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.feature-text h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.feature-text p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ============ FAQ ============ */
.faq-section {
  background: var(--bg-primary);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  background: rgba(17, 24, 39, 0.6);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--border-neon);
}
.faq-item.active {
  border-color: var(--border-neon);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.08);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 26px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.5;
}
.faq-question .fa {
  transition: transform 0.3s ease;
  color: var(--neon-cyan);
  font-size: 0.9rem;
  flex-shrink: 0;
}
.faq-item.active .fa {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 26px;
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 26px 22px;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(rgba(10, 14, 23, 0.85), rgba(10, 14, 23, 0.95)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-top: 1px solid var(--border-neon);
}
.cta-panel {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 50px;
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-lg);
  background: rgba(17, 24, 39, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 0 50px rgba(0, 229, 255, 0.1);
}
.cta-panel h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  margin-bottom: 18px;
  line-height: 1.3;
}
.cta-panel h2 span {
  color: var(--neon-cyan);
  text-shadow: 0 0 24px rgba(0, 229, 255, 0.4);
}
.cta-panel p {
  color: var(--text-secondary);
  margin-bottom: 34px;
  font-size: 1.02rem;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-dark);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand .brand-logo {
  font-size: 1.2rem;
}
.footer-brand p {
  color: var(--text-secondary);
  margin-top: 16px;
  max-width: 320px;
  font-size: 0.9rem;
  line-height: 1.8;
}
.footer-links h4,
.footer-contact h4 {
  color: var(--text-primary);
  margin-bottom: 18px;
  font-size: 1rem;
  font-weight: 800;
}
.footer-links a {
  display: block;
  color: var(--text-secondary);
  padding: 7px 0;
  font-size: 0.92rem;
}
.footer-links a:hover {
  color: var(--neon-cyan);
  padding-left: 4px;
}
.footer-contact p {
  color: var(--text-secondary);
  padding: 7px 0;
  font-size: 0.92rem;
}
.footer-contact i {
  color: var(--neon-cyan);
  margin-right: 8px;
  width: 18px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.site-domain {
  font-family: "JetBrains Mono", Consolas, monospace;
  color: var(--neon-cyan);
  opacity: 0.7;
}

/* ============ 响应式断点 ============ */
@media (max-width: 980px) {
  .feature-grid {
    gap: 40px;
  }
  .stats-grid-x {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .nav-cta {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border-neon);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 120;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 14px;
    border-radius: 10px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .category-hero {
    padding: 70px 0 60px;
  }
  .section-padding {
    padding: 70px 0;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-image {
    min-height: 260px;
  }
}

@media (max-width: 620px) {
  .container {
    padding: 0 18px;
  }
  .header-inner {
    height: 68px;
  }
  .brand-logo {
    font-size: 1.1rem;
  }
  .brand-badge {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }
  .main-nav {
    top: 68px;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-subtitle {
    font-size: 0.98rem;
  }
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  .stats-grid-x {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .stat-number {
    font-size: 1.7rem;
  }
  .cta-panel {
    padding: 42px 24px;
  }
  .cta-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* roulang page: article */
:root {
            --bg-deep: #070b14;
            --bg-body: #0a101c;
            --bg-card: #0f172a;
            --bg-card-2: #131c2f;
            --bg-hover: #1a2540;
            --border-color: #1f2a3d;
            --border-glow: rgba(0, 229, 255, 0.35);
            --neon: #00e5ff;
            --neon-violet: #8b5cf6;
            --gold: #ffd166;
            --text: #e8edf5;
            --text-weak: #9aa7bd;
            --text-faint: #64748b;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
            --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.3);
            --glow-neon: 0 0 22px rgba(0, 229, 255, 0.25);
            --space: 100px;
            --header-h: 78px;
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--text); text-decoration: none; transition: color 0.25s ease; }
        ul, ol { list-style: none; margin: 0; padding: 0; }
        button, input, select, textarea { font-family: inherit; }
        h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.3; }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 28px;
        }
        .grid-container { max-width: 1240px; }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(7, 11, 20, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.18);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }
        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--neon), var(--neon-violet), transparent);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .brand-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--neon), var(--neon-violet));
            color: #06121f;
            font-size: 16px;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            position: relative;
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-weak);
            border-radius: 8px;
            transition: color 0.25s ease, background 0.25s ease, text-shadow 0.25s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--text);
            background: rgba(0, 229, 255, 0.08);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 18px;
            right: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--neon);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.7);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            border: none;
            cursor: pointer;
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--neon) 0%, #00b4d8 100%);
            color: #06121f;
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
            color: #06121f;
        }
        .btn-outline {
            background: transparent;
            color: var(--neon);
            border: 1px solid var(--border-glow);
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: var(--glow-neon);
            transform: translateY(-2px);
            color: var(--neon);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            color: var(--text);
        }
        .btn-block { width: 100%; }
        .btn-nav {
            padding: 10px 24px;
            font-size: 14px;
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid var(--border-glow);
            color: var(--neon);
            font-size: 18px;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease;
        }
        .nav-toggle:hover {
            background: rgba(0, 229, 255, 0.16);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
        }

        .article-hero {
            position: relative;
            margin-top: var(--header-h);
            padding: 110px 0 90px;
            background-color: var(--bg-deep);
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
        }
        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 20, 0.9) 0%, rgba(7, 11, 20, 0.55) 50%, var(--bg-body) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 22px;
        }
        .breadcrumb a { color: var(--text-weak); transition: color 0.25s; }
        .breadcrumb a:hover { color: var(--neon); }
        .breadcrumb-sep { color: var(--text-faint); }
        .breadcrumb-current {
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 340px;
        }
        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border: 1px solid rgba(0, 229, 255, 0.5);
            border-radius: 30px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--neon);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.5px;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
            margin-bottom: 18px;
        }
        .article-hero h1 {
            font-size: clamp(30px, 4vw, 46px);
            line-height: 1.25;
            font-weight: 800;
            color: var(--text);
            max-width: 880px;
            margin-bottom: 18px;
            text-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 22px;
            color: var(--text-weak);
            font-size: 14px;
        }
        .post-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .post-meta i { color: var(--neon); }

        .article-section {
            padding: 60px 0 30px;
        }
        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .article-cover {
            position: relative;
            aspect-ratio: 16 / 7;
            overflow: hidden;
            background: var(--bg-card-2);
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-body {
            padding: 44px 48px 36px;
        }
        .article-body p {
            margin: 0 0 22px;
            font-size: 16.5px;
            line-height: 1.9;
            color: #cbd5e1;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--text);
            line-height: 1.4;
            margin: 36px 0 18px;
            font-weight: 700;
        }
        .article-body h2 {
            font-size: 26px;
            border-left: 3px solid var(--neon);
            padding-left: 16px;
        }
        .article-body h3 { font-size: 21px; }
        .article-body h4 { font-size: 18px; }
        .article-body ul,
        .article-body ol {
            margin: 0 0 22px;
            padding-left: 24px;
            color: var(--text-weak);
            line-height: 1.9;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 8px; }
        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 26px;
            border-left: 4px solid var(--neon);
            background: rgba(0, 229, 255, 0.06);
            border-radius: 0 12px 12px 0;
            color: var(--text);
            font-size: 17px;
            line-height: 1.8;
        }
        .article-body img {
            border-radius: 12px;
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--neon);
            border-bottom: 1px solid rgba(0, 229, 255, 0.4);
            transition: border-color 0.25s;
        }
        .article-body a:hover { border-color: var(--neon); }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
        }
        .article-body table th,
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            text-align: left;
        }
        .article-body table th {
            background: var(--bg-card-2);
            color: var(--text);
            font-weight: 700;
        }
        .article-body table td { color: var(--text-weak); }
        .empty-content {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-faint);
            font-size: 15px;
        }
        .article-not-found {
            text-align: center;
            padding: 40px 20px;
        }
        .article-not-found i {
            font-size: 44px;
            color: var(--text-faint);
            margin-bottom: 18px;
        }
        .article-not-found h2 {
            font-size: 26px;
            color: var(--text);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-weak);
            margin-bottom: 26px;
        }
        .article-tags {
            padding: 24px 48px 36px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .tags-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-weak);
            margin-right: 4px;
        }
        .tag-item {
            display: inline-block;
            padding: 5px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-weak);
            background: rgba(255, 255, 255, 0.03);
            transition: all 0.25s;
        }
        .tag-item:hover {
            border-color: var(--neon);
            color: var(--neon);
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: calc(var(--header-h) + 24px);
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .sidebar-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 28px;
            right: 28px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--neon), transparent);
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--neon); }
        .sidebar-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-weak);
            margin-bottom: 18px;
        }
        .sidebar-list li { margin-bottom: 6px; }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-weak);
            transition: all 0.3s;
        }
        .sidebar-list a:hover {
            background: rgba(0, 229, 255, 0.08);
            color: var(--neon);
            transform: translateX(4px);
        }
        .sidebar-list a i { width: 18px; color: var(--text-faint); }
        .sidebar-list a:hover i { color: var(--neon); }
        .sidebar-post-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .sidebar-post-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .side-post-title {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
            transition: color 0.25s;
        }
        .side-post-title:hover { color: var(--neon); }
        .side-post-date {
            font-size: 12.5px;
            color: var(--text-faint);
        }
        .side-empty {
            font-size: 14px;
            color: var(--text-faint);
            text-align: center;
            padding: 10px 0;
        }
        .sidebar-highlight p { margin-bottom: 12px; }
        .support-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            padding: 6px 0;
        }
        .support-list i { color: var(--neon); }

        .related-section {
            padding: 60px 0 40px;
        }
        .section-head {
            margin-bottom: 36px;
            text-align: center;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }
        .section-head h2::after {
            content: "";
            display: block;
            width: 56px;
            height: 3px;
            margin: 14px auto 0;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--neon), var(--neon-violet));
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.5);
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 15px;
            margin-top: 12px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.08);
        }
        .related-cover {
            position: relative;
            display: block;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-cover img { transform: scale(1.05); }
        .related-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.88);
            color: #06121f;
            font-size: 12px;
            font-weight: 800;
            letter-spacing: 0.3px;
        }
        .related-content { padding: 22px 22px 20px; }
        .related-content h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .related-content h3 a { color: var(--text); transition: color 0.25s; }
        .related-content h3 a:hover { color: var(--neon); }
        .related-content p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-faint);
        }
        .related-more { color: var(--neon); font-weight: 600; }
        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-faint);
        }

        .cta-section {
            padding: 40px 0 80px;
        }
        .cta-box {
            background: var(--bg-card);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 20px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon), var(--neon-violet), var(--neon));
            background-size: 200% 100%;
            animation: neonFlow 4s linear infinite;
        }
        @keyframes neonFlow {
            0% { background-position: 0% 0%; }
            100% { background-position: 200% 0%; }
        }
        .cta-info h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 10px;
        }
        .cta-info p { color: var(--text-weak); font-size: 15px; }
        .cta-actions { display: flex; gap: 14px; flex-shrink: 0; }

        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--neon), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-logo { margin-bottom: 16px; font-size: 20px; }
        .footer-brand p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-links h4, .footer-contact h4 {
            font-size: 16px;
            color: var(--text);
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-weak);
            transition: color 0.25s, padding-left 0.25s;
        }
        .footer-links a:hover {
            color: var(--neon);
            padding-left: 6px;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--text-weak);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i { color: var(--neon); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-faint);
        }
        .site-domain { letter-spacing: 1px; }

        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-box { flex-direction: column; text-align: center; }
            .cta-actions { justify-content: center; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 68px; }
            .header-inner { gap: 12px; }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(7, 11, 20, 0.97);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px 22px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-130%);
                transition: transform 0.35s ease;
                box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
                z-index: 999;
            }
            .main-nav.open { transform: translateY(0); }
            .main-nav .nav-link { width: 100%; padding: 12px 14px; }
            .nav-link.active::after { display: none; }
            .nav-toggle { display: flex; }
            .btn-nav { display: none; }
            .article-hero { padding: 90px 0 60px; }
            .article-hero h1 { font-size: 30px; }
            .article-body { padding: 32px 24px 28px; }
            .article-tags { padding: 20px 24px 28px; }
            .article-section { padding: 40px 0 20px; }
            .article-section .grid-x > .cell { margin-bottom: 36px; }
            .article-section .grid-x > .cell:last-child { margin-bottom: 0; }
            .article-sidebar { position: static; gap: 22px; }
            .related-section { padding: 40px 0 24px; }
            .cta-section { padding: 24px 0 50px; }
            .cta-box { padding: 36px 28px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 18px; }
            .brand-logo { font-size: 17px; }
            .brand-badge { width: 32px; height: 32px; font-size: 14px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-hero { padding: 76px 0 52px; }
            .hero-content .breadcrumb { font-size: 13px; }
            .breadcrumb-current { max-width: 180px; }
            .article-hero h1 { font-size: 26px; }
            .post-meta { gap: 14px; font-size: 13px; }
            .cta-actions { flex-direction: column; align-items: center; width: 100%; }
            .cta-actions .btn { width: 100%; }
            .cta-box { padding: 30px 20px; }
            .footer-grid { gap: 30px; }
        }

/* roulang page: category2 */
/* ========= 设计变量 ========= */
  :root {
    --bg-body: #070b14;
    --bg-deep: #0a1020;
    --bg-card: #101a30;
    --bg-card-hover: #15223c;
    --border-soft: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(245, 181, 10, 0.25);
    --primary: #f5b50a;
    --primary-dark: #d89d08;
    --primary-glow: rgba(245, 181, 10, 0.28);
    --accent: #00d4ff;
    --accent-glow: rgba(0, 212, 255, 0.2);
    --success: #29c97a;
    --text-main: #eef2f8;
    --text-muted: #8fa0b5;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 28px rgba(245, 181, 10, 0.12);
    --nav-height: 72px;
    --section-gap: 92px;
    --content-width: 1200px;
  }

  /* ========= 基础 Reset / Base ========= */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  img {
    max-width: 100%;
    display: block;
    object-fit: cover;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  }

  button, input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
    border: none;
    outline: none;
  }

  ul, ol {
    list-style: none;
  }

  h1, h2, h3, h4, h5 {
    line-height: 1.3;
    font-weight: 700;
    color: var(--text-main);
  }

  ::selection {
    background: var(--primary-glow);
    color: #fff;
  }

  /* ========= 滚动条 ========= */
  ::-webkit-scrollbar {
    width: 9px;
  }
  ::-webkit-scrollbar-track {
    background: var(--bg-deep);
  }
  ::-webkit-scrollbar-thumb {
    background: #233148;
    border-radius: 8px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
  }

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

  /* ========= 按钮 ========= */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 28px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1.5px solid transparent;
    white-space: nowrap;
  }

  .btn i {
    font-size: 1.05rem;
  }

  .btn-glow {
    background: linear-gradient(135deg, var(--primary), #ffd54f);
    color: #0a0e15;
    box-shadow: 0 0 18px var(--primary-glow);
  }
  .btn-glow:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 32px rgba(245, 181, 10, 0.4);
  }
  .btn-glow:active {
    transform: translateY(-1px);
  }

  .btn-stroke {
    background: transparent;
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.35);
  }
  .btn-stroke:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
    transform: translateY(-3px);
  }
  .btn-stroke:active {
    transform: translateY(-1px);
  }

  .btn-primary-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 50px;
    font-size: 0.86rem;
    font-weight: 600;
    transition: all 0.3s ease;
  }
  .btn-primary-sm:hover {
    background: var(--primary);
    color: #0a0e15;
    box-shadow: 0 0 20px var(--primary-glow);
    transform: translateY(-2px);
  }

  /* ========= 标签 / 徽章 ========= */
  .badge-tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.4px;
    background: rgba(0, 212, 255, 0.12);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 255, 0.25);
  }

  .badge-gold {
    background: var(--primary-glow);
    color: var(--primary);
    border-color: rgba(245, 181, 10, 0.3);
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 50px;
    font-size: 0.82rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
  }
  .chip i {
    color: var(--primary);
  }

  /* ========= 头部导航 ========= */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 11, 20, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 2px 28px rgba(0, 0, 0, 0.25);
  }

  .site-header::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.55;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
  }

  .brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-size: 1.38rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.5px;
    white-space: nowrap;
  }

  .brand-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), #ffcf40);
    color: #0a0e15;
    border-radius: 12px;
    font-size: 1.1rem;
    box-shadow: 0 0 16px var(--primary-glow);
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
  }

  .nav-link:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
  }

  .nav-link.active {
    color: var(--primary);
    background: var(--primary-glow);
    box-shadow: 0 0 14px rgba(245, 181, 10, 0.18);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-main);
    font-size: 1.2rem;
    cursor: pointer;
    border: 1px solid var(--border-soft);
    transition: all 0.3s ease;
  }
  .mobile-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
  }

  /* ========= 分类页 Banner ========= */
  .page-banner {
    position: relative;
    background-size: cover;
    background-position: center 30%;
    padding: 130px 0 104px;
    overflow: hidden;
  }

  .page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 40%, rgba(245, 181, 10, 0.1), transparent 45%), linear-gradient(180deg, rgba(7, 11, 20, 0.82) 0%, rgba(7, 11, 20, 0.94) 100%);
  }

  .page-banner::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: linear-gradient(180deg, transparent, var(--bg-body));
    z-index: 1;
  }

  .banner-inner {
    position: relative;
    z-index: 2;
    text-align: center;
  }

  .banner-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 22px;
    border: 1px solid var(--border-glow);
    background: var(--primary-glow);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 22px;
  }

  .page-banner h1 {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(115deg, #fff 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 18px;
  }

  .banner-desc {
    max-width: 640px;
    margin: 0 auto 34px;
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
  }

  .banner-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .banner-meta {
    display: flex;
    justify-content: center;
    gap: 22px;
    flex-wrap: wrap;
    margin-top: 44px;
  }

  .banner-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--text-muted);
    font-size: 0.86rem;
  }
  .banner-meta .meta-item i {
    color: var(--primary);
  }

  /* ========= 通用板块结构 ========= */
  .section {
    padding: var(--section-gap) 0;
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
  }

  .section-head .chip {
    margin-bottom: 16px;
  }

  .section-head h2 {
    font-size: clamp(1.75rem, 3.2vw, 2.5rem);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
  }

  .section-head p {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.75;
  }

  .section-divider {
    width: 64px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    margin: 20px auto 0;
    border-radius: 3px;
  }

  /* ========= 分类特征卡片 ========= */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
  }

  .feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
  }

  .feature-card::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.35s ease;
  }

  .feature-card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: rgba(245, 181, 10, 0.2);
    box-shadow: var(--shadow-card), 0 8px 30px rgba(0, 0, 0, 0.25);
  }

  .feature-card:hover::before {
    opacity: 1;
  }

  .feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 1.5rem;
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid rgba(245, 181, 10, 0.25);
    margin-bottom: 22px;
    box-shadow: 0 0 18px rgba(245, 181, 10, 0.1);
  }

  .feature-card h3 {
    font-size: 1.22rem;
    margin-bottom: 12px;
  }

  .feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
  }

  /* ========= 攻略卡片网格 ========= */
  .guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
  }

  .guide-card {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.35s ease;
    display: flex;
    flex-direction: column;
  }

  .guide-card:hover {
    transform: translateY(-6px);
    border-color: rgba(245, 181, 10, 0.25);
    box-shadow: var(--shadow-card), 0 10px 34px rgba(0, 0, 0, 0.25);
  }

  .guide-cover {
    position: relative;
    height: 190px;
    overflow: hidden;
  }

  .guide-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .guide-card:hover .guide-cover img {
    transform: scale(1.06);
  }

  .guide-cover .cover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 11, 20, 0.15), rgba(7, 11, 20, 0.65));
  }

  .guide-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    padding: 5px 14px;
    background: rgba(245, 181, 10, 0.9);
    color: #0a0e15;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
  }

  .guide-body {
    padding: 24px 22px 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .guide-body h3 {
    font-size: 1.12rem;
    margin-bottom: 10px;
    transition: color 0.25s ease;
  }

  .guide-card:hover .guide-body h3 {
    color: var(--primary);
  }

  .guide-body p {
    color: var(--text-muted);
    font-size: 0.87rem;
    line-height: 1.65;
    margin-bottom: 16px;
    flex: 1;
  }

  .guide-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 0.78rem;
  }

  .guide-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .guide-meta i {
    color: var(--primary);
    font-size: 0.8rem;
  }

  /* ========= 团队协作图文区块 ========= */
  .split-section {
    background: var(--bg-deep);
    position: relative;
    overflow: hidden;
  }

  .split-section::before {
    content: "";
    position: absolute;
    top: -40%;
    right: -10%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(245, 181, 10, 0.08), transparent 70%);
    border-radius: 50%;
  }

  .split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 54px;
    align-items: center;
  }

  .split-media {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }

  .split-media img {
    width: 100%;
    height: 460px;
    object-fit: cover;
  }

  .split-media::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-xl);
    pointer-events: none;
  }

  .media-hud {
    position: absolute;
    bottom: 18px;
    left: 18px;
    right: 18px;
    background: rgba(7, 11, 20, 0.72);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(245, 181, 10, 0.2);
    border-radius: 14px;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .media-hud .hud-item {
    text-align: center;
  }

  .hud-item strong {
    display: block;
    font-size: 1.15rem;
    color: var(--primary);
  }

  .hud-item span {
    font-size: 0.75rem;
    color: var(--text-muted);
  }

  .split-content .section-head {
    text-align: left;
    margin-bottom: 24px;
  }

  .split-content .section-head .chip {
    margin-bottom: 14px;
  }

  .split-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 24px;
  }

  .tactic-list {
    display: grid;
    gap: 16px;
  }

  .tactic-item {
    display: flex;
    gap: 14px;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    transition: all 0.3s ease;
  }

  .tactic-item:hover {
    border-color: rgba(245, 181, 10, 0.22);
    box-shadow: var(--shadow-glow);
  }

  .tactic-item .tactic-icon {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--primary-glow);
    color: var(--primary);
    font-size: 1rem;
  }

  .tactic-item h4 {
    font-size: 0.98rem;
    margin-bottom: 4px;
  }

  .tactic-item p {
    font-size: 0.84rem;
    margin-bottom: 0;
    line-height: 1.6;
  }

  /* ========= 最新更新列表 ========= */
  .update-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    overflow: hidden;
  }

  .update-list {
    display: flex;
    flex-direction: column;
  }

  .update-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-soft);
    transition: all 0.3s ease;
  }

  .update-item:last-child {
    border-bottom: none;
  }

  .update-item:hover {
    background: rgba(245, 181, 10, 0.04);
    box-shadow: inset 3px 0 0 var(--primary);
  }

  .update-date {
    flex-shrink: 0;
    min-width: 88px;
    text-align: center;
    padding: 14px 12px;
    border-radius: 12px;
    background: var(--bg-deep);
    border: 1px solid var(--border-soft);
  }

  .update-date strong {
    display: block;
    font-size: 1.18rem;
    color: var(--primary);
    line-height: 1.2;
  }

  .update-date span {
    font-size: 0.73rem;
    color: var(--text-muted);
  }

  .update-info {
    flex: 1;
    min-width: 0;
  }

  .update-info h4 {
    font-size: 1.02rem;
    margin-bottom: 6px;
    transition: color 0.25s ease;
  }

  .update-item:hover .update-info h4 {
    color: var(--primary);
  }

  .update-info p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 8px;
  }

  .update-tags {
    display: flex;
    gap: 8px;
  }

  .update-tags .badge-tag {
    font-size: 0.7rem;
    padding: 3px 11px;
  }

  .update-link {
    color: var(--primary);
    font-size: 0.88rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
  }

  .update-link:hover {
    gap: 10px;
  }

  /* ========= 数据统计 HUD ========= */
  .stats-section {
    background: var(--bg-deep);
    position: relative;
    overflow: hidden;
  }

  .stats-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(245, 181, 10, 0.06), transparent 50%), radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.05), transparent 50%);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 2;
  }

  .stat-card {
    background: rgba(16, 26, 48, 0.75);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
  }

  .stat-card::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(245, 181, 10, 0.2);
  }

  .stat-card:hover::after {
    opacity: 1;
  }

  .stat-icon {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 10px;
  }

  .stat-card strong {
    display: block;
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.3;
    background: linear-gradient(135deg, #fff, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .stat-card span {
    color: var(--text-muted);
    font-size: 0.84rem;
  }

  /* ========= FAQ ========= */
  .faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
  }

  .faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .faq-item:hover {
    border-color: rgba(245, 181, 10, 0.22);
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    padding: 22px 26px;
    font-size: 1rem;
    font-weight: 600;
    list-style: none;
    color: var(--text-main);
    transition: color 0.25s ease;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.85rem;
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
  }

  .faq-item[open] summary::after {
    transform: rotate(180deg);
  }

  .faq-item[open] summary {
    color: var(--primary);
  }

  .faq-answer {
    padding: 0 26px 22px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    border-top: 1px solid var(--border-soft);
    margin: 0 26px;
    padding-left: 0;
    padding-right: 0;
    padding-top: 16px;
  }

  /* ========= CTA ========= */
  .cta-section {
    position: relative;
    padding: 92px 0;
    background-size: cover;
    background-position: center;
  }

  .cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 11, 20, 0.92), rgba(10, 16, 32, 0.84));
  }

  .cta-box {
    position: relative;
    z-index: 2;
    max-width: 760px;
    margin: 0 auto;
    background: rgba(16, 26, 48, 0.78);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(245, 181, 10, 0.2);
    border-radius: var(--radius-xl);
    padding: 50px 46px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  }

  .cta-box h2 {
    font-size: clamp(1.65rem, 3vw, 2.2rem);
    margin-bottom: 14px;
  }

  .cta-box p {
    color: var(--text-muted);
    font-size: 0.96rem;
    margin-bottom: 28px;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
  }

  /* ========= 页脚 ========= */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-soft);
    padding-top: 68px;
    position: relative;
  }

  .site-footer::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.35;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 44px;
  }

  .footer-brand .brand-logo {
    margin-bottom: 16px;
    font-size: 1.3rem;
  }

  .footer-brand p {
    color: var(--text-muted);
    font-size: 0.87rem;
    line-height: 1.75;
    max-width: 300px;
  }

  .footer-links h4,
  .footer-contact h4 {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
  }

  .footer-links a {
    display: block;
    color: var(--text-muted);
    font-size: 0.87rem;
    padding: 5px 0;
    transition: all 0.25s ease;
  }

  .footer-links a:hover {
    color: var(--primary);
    padding-left: 6px;
  }

  .footer-contact p {
    color: var(--text-muted);
    font-size: 0.87rem;
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 9px;
  }

  .footer-contact i {
    color: var(--primary);
    font-size: 0.9rem;
  }

  .footer-bottom {
    padding: 20px 0;
    border-top: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.79rem;
  }

  .footer-bottom p {
    margin: 0;
  }

  .site-domain {
    letter-spacing: 1px;
    color: var(--text-muted);
    opacity: 0.7;
  }

  /* ========= 响应式 ========= */
  @media (max-width: 1024px) {
    :root {
      --section-gap: 72px;
    }

    .feature-grid,
    .guide-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .split-grid {
      grid-template-columns: 1fr;
      gap: 38px;
    }

    .split-media img {
      height: 380px;
    }
  }

  @media (max-width: 900px) {
    .mobile-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .main-nav {
      display: none;
      position: absolute;
      top: var(--nav-height);
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      background: rgba(7, 11, 20, 0.97);
      border-bottom: 1px solid var(--border-soft);
      padding: 14px 24px 22px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }

    .main-nav.open {
      display: flex;
      animation: fadeDown 0.3s ease;
    }

    @keyframes fadeDown {
      from { opacity: 0; transform: translateY(-10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .nav-link {
      padding: 14px 16px;
      border-radius: 10px;
      font-size: 1rem;
    }

    .nav-link.active::after {
      display: none;
    }

    .page-banner {
      padding: 100px 0 80px;
    }
  }

  @media (max-width: 768px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }

    .feature-grid,
    .guide-grid {
      grid-template-columns: 1fr;
    }

    .update-item {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
    }

    .update-date {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 14px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 18px;
    }

    .stats-grid {
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .stat-card {
      padding: 22px 16px;
    }

    .stat-card strong {
      font-size: 1.6rem;
    }

    .banner-actions {
      flex-direction: column;
      align-items: center;
    }

    .btn {
      width: 100%;
      justify-content: center;
    }

    .cta-box {
      padding: 36px 24px;
    }

    .page-banner h1 {
      font-size: 1.8rem;
    }

    .footer-bottom {
      flex-direction: column;
      gap: 6px;
      text-align: center;
    }

    .split-media img {
      height: 280px;
    }

    .media-hud {
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }
  }

  @media (max-width: 360px) {
    .header-inner {
      height: 64px;
    }

    :root {
      --nav-height: 64px;
    }

    .brand-logo {
      font-size: 1.1rem;
    }

    .brand-badge {
      width: 34px;
      height: 34px;
      font-size: 0.95rem;
    }

    .page-banner {
      padding: 80px 0 64px;
    }
  }