/* roulang page: index */
:root {
  --bg-body: #0A0C10;
  --bg-primary: #0E1116;
  --bg-card: #171A21;
  --bg-input: #1F242E;
  --accent: #F59E0B;
  --accent-hover: #FFAD33;
  --accent-soft: rgba(245,158,11,0.12);
  --accent-border: rgba(245,158,11,0.4);
  --text-primary: #F2F4F8;
  --text-secondary: #8B94A7;
  --text-muted: #5C6577;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.16);
  --success: #22C55E;
  --warning: #FBBF24;
  --danger: #EF4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 12px 32px rgba(0,0,0,0.45);
  --shadow-btn: 0 6px 24px rgba(245,158,11,0.25);
  --font-sans: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans CJK SC',-apple-system,sans-serif;
  --font-mono: 'JetBrains Mono','Roboto Mono','SF Mono',monospace;
  --sidebar-w: 240px;
  --sidebar-w-tab: 64px;
  --header-h-mob: 56px;
  --section-pad: 88px;
  --section-pad-mob: 56px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-primary);
  background:var(--bg-primary);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s,border-color .25s,background .25s,box-shadow .25s,transform .2s}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
h1,h2,h3,h4,h5{line-height:1.35;font-weight:700}
p{line-height:1.75}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--section-pad) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.sec-label{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--accent);text-transform:uppercase;font-weight:600;margin-bottom:8px}
.section-title{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:800;letter-spacing:1px}
.sec-sub{color:var(--text-secondary);font-size:.9375rem;max-width:480px}
@media(max-width:767px){
  .section{padding:var(--section-pad-mob) 0}
  .container{padding:0 20px}
  .section-head{margin-bottom:32px}
}

/* ===== Sidebar ===== */
.sidebar{
  position:fixed;top:0;left:0;z-index:300;
  width:var(--sidebar-w);height:100vh;
  background:var(--bg-body);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:20px 16px 24px;
}
.sidebar-brand{padding:12px 8px 20px;border-bottom:1px solid var(--border);margin-bottom:20px}
.brand-link{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,#F59E0B 0%,#FF7A1A 100%);
  color:#0E1116;font-weight:800;font-size:22px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:1px;color:#fff}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-secondary);letter-spacing:3px}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;flex:1;margin-top:8px}
.nav-item{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;border-radius:var(--radius-md);
  color:var(--text-secondary);font-size:.9375rem;font-weight:500;
  border-left:3px solid transparent;
  transition:all .25s ease;
}
.nav-item:hover{color:var(--text-primary);background:rgba(255,255,255,0.04)}
.nav-item:active{transform:scale(.98)}
.nav-item.active{color:var(--accent);background:var(--accent-soft);border-left-color:var(--accent)}
.nav-icon{width:20px;height:20px;flex-shrink:0}
.sidebar-foot{border-top:1px solid var(--border);padding-top:16px}
.btn-block{
  display:block;text-align:center;padding:12px 16px;border-radius:var(--radius-md);
  background:var(--accent);color:#0E1116;font-weight:700;font-size:.9375rem;
  transition:all .25s ease;
}
.btn-block:hover{background:var(--accent-hover);box-shadow:var(--shadow-btn);transform:translateY(-1px)}
.btn-block:active{transform:translateY(1px)}
.foot-note{text-align:center;font-size:.8125rem;color:var(--text-muted);margin-top:12px}

/* ===== Mobile Header ===== */
.mobile-header{display:none}
.drawer-mask{
  display:none;
  position:fixed;inset:0;z-index:280;
  background:rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transition:all .3s;
}
@media(max-width:767px){
  .mobile-header{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:var(--header-h-mob);
    background:rgba(14,17,22,.97);border-bottom:1px solid var(--border);
    padding:0 16px;z-index:400;
  }
  .burger{width:40px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px;transition:background .2s}
  .burger:active{background:rgba(255,255,255,.06)}
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-primary);transition:transform .3s,opacity .3s}
  body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .burger span:nth-child(2){opacity:0}
  body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .mobile-brand{font-size:17px;font-weight:800;letter-spacing:2px;color:#fff}
  .mobile-btn{background:var(--accent);color:#0E1116;border-radius:8px;padding:7px 16px;font-size:.875rem;font-weight:700}
  .mobile-btn:active{transform:scale(.96)}
  .sidebar{
    width:272px;transform:translateX(-100%);
    transition:transform .3s ease;box-shadow:none;
  }
  .sidebar.open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.65)}
  .drawer-mask{display:block}
  .drawer-mask.show{opacity:1;visibility:visible}
  body.nav-open{overflow:hidden}
}

/* ===== Main layout ===== */
.main-wrap{margin-left:var(--sidebar-w)}
@media(min-width:768px) and (max-width:1023px){
  .main-wrap{margin-left:var(--sidebar-w-tab)}
  .sidebar{width:var(--sidebar-w-tab);padding:16px 10px}
  .sidebar-brand{padding:8px 0;border-bottom:none;margin-bottom:12px}
  .brand-text,.foot-note{display:none}
  .brand-link{justify-content:center}
  .brand-mark{width:36px;height:36px;font-size:18px;border-radius:10px}
  .nav-item{justify-content:center;padding:14px;border-left:none;border-bottom:2px solid transparent}
  .nav-item .nav-label{display:none}
  .nav-item.active{border-bottom-color:var(--accent);border-left-color:transparent}
  .sidebar-foot .btn-block{font-size:0;padding:12px}
  .sidebar-foot .btn-block::after{content:'→';font-size:18px;font-weight:800}
}
@media(max-width:767px){
  .main-wrap{margin-left:0;margin-top:var(--header-h-mob)}
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:640px;
  display:flex;align-items:center;overflow:hidden;
  background:var(--bg-body);
}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.55;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,12,16,.96) 8%,rgba(10,12,16,.78) 50%,rgba(10,12,16,.4) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-inner{position:relative;z-index:2;width:100%;padding:96px 0}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border-radius:var(--radius-pill);
  background:var(--accent-soft);border:1px solid rgba(245,158,11,.3);
  color:var(--accent);font-size:.8125rem;font-weight:600;letter-spacing:2px;
}
.hero h1{
  font-size:clamp(2rem,5vw,3.5rem);
  font-weight:800;line-height:1.25;
  margin:28px 0 20px;letter-spacing:3px;
  background:linear-gradient(135deg,#FFFFFF 0%,#FFE7B3 55%,#F59E0B 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-sub{font-size:1.0625rem;color:var(--text-secondary);max-width:520px;line-height:1.8}
.hero-actions{display:flex;align-items:center;gap:16px;margin-top:38px;flex-wrap:wrap}
.hero-note{display:flex;align-items:center;gap:14px;margin-top:44px}
.hero-note .line{width:32px;height:1px;background:var(--accent)}
.hero-note span{font-size:.8125rem;color:var(--text-muted)}
@media(max-width:767px){
  .hero{min-height:560px}
  .hero-inner{padding:64px 0}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-note{margin-top:32px}
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 32px;border-radius:var(--radius-md);
  font-weight:700;font-size:.9375rem;line-height:1.2;
  border:1px solid transparent;transition:all .25s ease;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-primary{background:var(--accent);color:#0E1116}
.btn-primary:hover{background:var(--accent-hover);box-shadow:0 8px 32px rgba(245,158,11,.35);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(2px);box-shadow:0 2px 12px rgba(245,158,11,.2)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text-primary)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(245,158,11,.08)}
.btn-ghost:active{transform:translateY(1px)}

/* ===== Trust Bar ===== */
.trust-bar{background:var(--bg-body);border-bottom:1px solid var(--border)}
.trust-inner{display:flex;justify-content:space-between;gap:20px;padding:18px 0;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.875rem;white-space:nowrap}
.trust-item svg{width:16px;height:16px;color:var(--accent);flex-shrink:0}
@media(max-width:767px){
  .trust-inner{justify-content:center;gap:12px 20px}
}

/* ===== Features ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{
  position:relative;background:var(--bg-card);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 28px;transition:all .3s ease;overflow:hidden;
}
.feat-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-card);transform:translateY(-4px)}
.feat-num{
  position:absolute;top:12px;right:20px;
  font-family:var(--font-mono);font-size:3rem;font-weight:800;
  color:rgba(255,255,255,.04);line-height:1;user-select:none;
}
.feat-card:hover .feat-num{color:rgba(245,158,11,.08)}
.feat-icon{width:48px;height:48px;border-radius:14px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--accent)}
.feat-icon svg{width:24px;height:24px}
.feat-card h3{font-size:1.125rem;margin-bottom:10px;font-weight:700}
.feat-card p{font-size:.9375rem;color:var(--text-secondary);line-height:1.7}
.feat-card.featured{
  background:linear-gradient(145deg,var(--bg-card) 0%,rgba(245,158,11,.08) 100%);
  border-color:rgba(245,158,11,.25);
}
.feat-card.featured .feat-num{color:rgba(245,158,11,.12)}
@media(max-width:1023px){
  .features-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  .features-grid{grid-template-columns:1fr}
  .feat-card{padding:28px 22px}
}

/* ===== Process ===== */
.process{background:var(--bg-body)}
.process-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
.process-steps{display:flex;flex-direction:column;gap:24px}
.process-step{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:24px;
  transition:border-color .3s;
}
.process-step:hover{border-color:rgba(245,158,11,.3)}
.step-no{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  border:2px solid var(--accent);color:var(--accent);
  font-family:var(--font-mono);font-weight:700;font-size:1rem;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-card);
}
.process-step h3{font-size:1.0625rem;margin-bottom:6px}
.process-step p{font-size:.875rem;color:var(--text-secondary);line-height:1.6}
.process-figure{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border)}
.process-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
@media(max-width:1023px){
  .process-wrap{grid-template-columns:1fr;gap:32px}
}
@media(max-width:767px){
  .process-step{padding:18px}
}

/* ===== Social Proof ===== */
.social-proof{background:var(--bg-body);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-bottom:44px;border-bottom:1px solid var(--border)}
.stat-item{text-align:center;padding:20px 12px;transition:background .3s;border-radius:var(--radius-lg)}
.stat-item:hover{background:rgba(255,255,255,.02)}
.stat-num{font-family:var(--font-mono);font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:var(--accent);line-height:1.1}
.stat-label{color:var(--text-secondary);font-size:.875rem;margin-top:10px}
.quotes-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px}
.quote-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:32px;position:relative;
}
.quote-mark{font-size:3.5rem;line-height:0;color:var(--accent);font-weight:800;opacity:.5;display:block;margin-bottom:8px}
.quote-text{font-size:1.0625rem;line-height:1.8;color:var(--text-primary);margin-bottom:18px}
.quote-person{font-size:.8125rem;color:var(--text-muted)}
@media(max-width:767px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px;padding-bottom:24px}
  .quotes-grid{grid-template-columns:1fr;margin-top:24px}
  .quote-card{padding:24px}
}

/* ===== News / CMS ===== */
.news-section{background:var(--bg-primary)}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  display:flex;gap:16px;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:16px;
  transition:all .3s ease;
}
.news-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.news-card:active{transform:translateY(0)}
.news-thumb{width:160px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-input);aspect-ratio:16/10}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-content{display:flex;flex-direction:column;gap:6px;min-width:0}
.news-cat{
  align-self:flex-start;padding:3px 12px;border-radius:var(--radius-pill);
  border:1px solid var(--accent-border);color:var(--accent);
  font-size:.75rem;font-weight:600;
}
.news-content h3{font-size:1.0625rem;font-weight:700;line-height:1.4;transition:color .25s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-content h3{color:var(--accent)}
.news-desc{font-size:.875rem;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:.8125rem;color:var(--text-muted);font-family:var(--font-mono);margin-top:auto}
.empty-state{
  grid-column:1/-1;padding:64px 24px;text-align:center;
  background:rgba(255,255,255,.02);border-radius:var(--radius-lg);
  border:1px dashed var(--border-hover);
}
.empty-state svg{width:44px;height:44px;color:var(--text-muted);margin:0 auto 16px}
.empty-state p{color:var(--text-secondary);font-size:.9375rem}
@media(max-width:1023px){
  .news-grid{grid-template-columns:1fr}
}
@media(max-width:767px){
  .news-grid{grid-template-columns:1fr}
  .news-card{padding:12px;gap:12px}
  .news-thumb{width:120px}
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-body)}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--border);border-radius:var(--radius-md);
  background:var(--bg-card);margin-bottom:12px;
  transition:border-color .3s;
}
.faq-item.open{border-color:rgba(245,158,11,.35)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;padding:22px 24px;text-align:left;gap:16px;
}
.faq-q .q-text{font-size:1rem;font-weight:600;color:var(--text-primary)}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--accent);transition:all .3s;border-radius:2px}
.faq-icon::before{top:9px;left:0;width:20px;height:2px}
.faq-icon::after{top:0;left:9px;width:2px;height:20px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;padding:0 24px;transition:max-height .35s ease,padding .35s ease;color:var(--text-secondary);font-size:.9375rem;line-height:1.75}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 22px}
@media(max-width:767px){
  .faq-q{padding:18px 16px}
  .faq-a{padding:0 16px}
  .faq-item.open .faq-a{padding:0 16px 18px}
}

/* ===== CTA ===== */
.cta-section{padding-bottom:var(--section-pad)}
.cta-banner{
  position:relative;border-radius:var(--radius-xl);overflow:hidden;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:72px 64px;
}
.cta-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(to right,rgba(10,12,16,.94) 25%,rgba(10,12,16,.6))}
.cta-content{position:relative;max-width:560px}
.cta-content h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;letter-spacing:1px;margin-bottom:14px}
.cta-content p{color:var(--text-secondary);font-size:.9375rem;margin-bottom:28px}
.cta-content .btn{margin-right:12px}
@media(max-width:767px){
  .cta-banner{padding:48px 24px}
  .cta-content .btn{width:100%;margin-bottom:12px}
}

/* ===== Footer ===== */
.footer{background:var(--bg-body);border-top:1px solid var(--border);padding:56px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;margin-bottom:40px}
.foot-logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:800;letter-spacing:1px;margin-bottom:14px}
.foot-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,#F59E0B,#FF7A1A);
  color:#0E1116;font-weight:800;font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
}
.footer-brand p{font-size:.875rem;color:var(--text-secondary);line-height:1.7;max-width:280px}
.footer-col h4{font-size:.9375rem;font-weight:700;margin-bottom:16px;color:var(--text-primary)}
.footer-col a{display:block;font-size:.875rem;color:var(--text-secondary);padding:5px 0;transition:color .25s}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:.875rem;color:var(--text-secondary);padding:5px 0;line-height:1.7}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--text-muted);font-size:.8125rem}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer{padding-bottom:96px}
}

/* ===== Mobile Bottom Bar ===== */
.mobile-bottom-bar{display:none}
@media(max-width:767px){
  .mobile-bottom-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;bottom:0;left:0;right:0;height:64px;
    padding:0 20px;padding-bottom:env(safe-area-inset-bottom);
    background:rgba(14,17,22,.97);border-top:1px solid var(--border);
    z-index:200;transition:transform .3s;
  }
  .mobile-bottom-bar.hide{transform:translateY(100%)}
  .bar-text{font-size:.875rem;color:var(--text-primary);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-right:12px}
  .bar-btn{flex-shrink:0;padding:10px 20px;background:var(--accent);border-radius:10px;color:#0E1116;font-weight:700;font-size:.875rem;transition:all .2s}
  .bar-btn:active{transform:scale(.95);background:var(--accent-hover)}
}

/* Focus visible global */
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* roulang page: category1 */
:root {
  --bg: #0E1116;
  --surface: #171A21;
  --surface-2: #1D222B;
  --surface-3: #232933;
  --primary: #F59E0B;
  --primary-light: #FFB224;
  --primary-dark: #D97706;
  --primary-glow: rgba(245, 158, 11, 0.25);
  --text: #E8EAF0;
  --text-secondary: #8B94A7;
  --text-muted: #5B6472;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --success: #22C55E;
  --warning: #FBBF24;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", monospace;
  --sidebar-w: 240px;
  --sidebar-w-tablet: 64px;
  --header-h: 56px;
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-light: 0 4px 16px rgba(15, 23, 42, 0.08);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(14, 17, 22, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-3);
}

.mobile-logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.mobile-logo span {
  color: var(--primary);
}

.mobile-cta {
  background: var(--primary);
  color: #0E1116;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}

.mobile-cta:hover {
  background: var(--primary-light);
  box-shadow: 0 0 20px var(--primary-glow);
}

.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: var(--transition);
}

.menu-toggle:hover {
  background: var(--surface);
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  z-index: 900;
  display: flex;
  flex-direction: column;
  padding: var(--space-3) var(--space-2);
  transition: transform var(--transition), width var(--transition);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  margin-bottom: var(--space-4);
  min-height: 64px;
  border-bottom: 1px solid var(--border);
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #0E1116;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text span {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.02em;
}

.logo-text small {
  font-size: 0.6875rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: var(--space-3);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--surface-2);
  color: var(--text);
}

.nav-item.active {
  background: rgba(245, 158, 11, 0.08);
  color: var(--primary);
  border-left-color: var(--primary);
}

.nav-item.active .nav-label {
  font-weight: 700;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke-width: 1.8;
}

.sidebar-cta {
  margin-top: auto;
  padding: var(--space-3);
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
}

.sidebar-cta span {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.sidebar-cta a {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  padding: 6px 16px;
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-pill);
  transition: var(--transition);
}

.sidebar-cta a:hover {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--primary);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 850;
  opacity: 0;
  transition: opacity var(--transition);
}

.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--primary);
  color: #0E1116;
}

.btn-primary:hover {
  background: var(--primary-light);
  box-shadow: 0 0 24px var(--primary-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.98) translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:active {
  transform: scale(0.98);
}

.hero {
  position: relative;
  padding: 80px 0 64px;
  background: linear-gradient(135deg, rgba(14, 17, 22, 0.92), rgba(14, 17, 22, 0.7)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  min-height: 560px;
  display: flex;
  align-items: center;
}

.hero-inner {
  max-width: 800px;
  padding: 0 var(--space-3);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -0.01em;
}

.hero h1 .highlight {
  color: var(--primary);
}

.hero-subtitle {
  margin-top: var(--space-3);
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.trust-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-3) 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
}

.section {
  padding: var(--space-7) 0;
}

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  margin-bottom: var(--space-5);
  max-width: 700px;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-1);
  display: block;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
}

.section-head p {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.coverage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.coverage-item {
  display: flex;
  gap: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: var(--transition);
  align-items: flex-start;
}

.coverage-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.coverage-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(245, 158, 11, 0.25);
  line-height: 1;
  flex-shrink: 0;
  min-width: 56px;
}

.coverage-icon {
  width: 44px;
  height: 44px;
  background: rgba(245, 158, 11, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.coverage-icon svg {
  width: 22px;
  height: 22px;
  color: var(--primary);
}

.coverage-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.coverage-body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

.hot-section {
  padding: var(--space-7) 0;
}

.hot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.hot-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.hot-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

.hot-card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.hot-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.hot-card:hover .hot-card-img img {
  transform: scale(1.05);
}

.hot-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(14, 17, 22, 0.5));
}

.hot-card-body {
  padding: var(--space-3);
}

.hot-tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.hot-card-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.hot-card-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-2);
}

.hot-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.process-section {
  padding: var(--space-7) 0;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  position: relative;
}

.process-step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.process-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: var(--space-3);
}

.process-step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.process-img {
  margin-top: var(--space-5);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.process-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.process-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(14, 17, 22, 0.4), transparent);
  z-index: 1;
}

.stats-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  text-align: center;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.quote-block {
  margin-top: var(--space-5);
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border-left: 4px solid var(--primary);
}

.quote-block blockquote {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.75;
  font-style: normal;
}

.quote-block cite {
  display: block;
  margin-top: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-style: normal;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-item.open {
  border-color: rgba(245, 158, 11, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-3);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.35s ease;
}

.faq-icon svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 var(--space-3);
}

.faq-item.open .faq-answer {
  max-height: 240px;
  padding: 0 var(--space-3) var(--space-3);
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cta-section {
  padding: var(--space-7) 0;
  position: relative;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.06), rgba(14, 17, 22, 0.9)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-top: 1px solid var(--border);
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
}

.cta-inner p {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.cta-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-6) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
}

.footer-brand .foot-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.foot-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #0E1116;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 5px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-col p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 5px 0;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: var(--space-3) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: var(--space-1);
}

.mobile-bottom-bar {
  display: none;
}

@media (max-width: 1023px) {
  .sidebar {
    width: var(--sidebar-w-tablet);
    padding: var(--space-3) var(--space-1);
  }

  .sidebar-logo {
    justify-content: center;
    padding: 8px 0;
  }

  .logo-text {
    display: none;
  }

  .logo-mark {
    width: 40px;
    height: 40px;
  }

  .nav-item {
    justify-content: center;
    padding: 12px 0;
    border-left: none;
    border-left: 3px solid transparent;
  }

  .nav-item.active {
    border-left-color: var(--primary);
  }

  .nav-label {
    display: none;
  }

  .sidebar-cta {
    display: none;
  }

  .main {
    margin-left: var(--sidebar-w-tablet);
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  body {
    display: block;
  }

  .mobile-header {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    padding: var(--space-3) var(--space-2);
    z-index: 950;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.show {
    display: block;
    opacity: 1;
  }

  .sidebar-logo {
    justify-content: flex-start;
    padding: 8px 12px;
  }

  .logo-text {
    display: flex;
  }

  .nav-item {
    justify-content: flex-start;
    padding: 12px 14px;
  }

  .nav-label {
    display: inline;
  }

  .sidebar-cta {
    display: block;
  }

  .main {
    margin-left: 0;
    padding-top: var(--header-h);
  }

  .hero {
    min-height: 520px;
    padding: 48px 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .trust-inner {
    gap: var(--space-2);
    justify-content: flex-start;
    overflow-x: auto;
    padding: 0 var(--space-2);
  }

  .trust-item {
    white-space: nowrap;
  }

  .section {
    padding: var(--space-5) 0;
  }

  .coverage-item {
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3);
  }

  .coverage-num {
    font-size: 1.5rem;
  }

  .coverage-icon {
    display: none;
  }

  .hot-grid {
    grid-template-columns: 1fr;
  }

  .process-img img {
    height: 220px;
  }

  .stats-grid {
    gap: var(--space-3);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  }

  .mobile-bottom-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(64px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: rgba(23, 26, 33, 0.98);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    align-items: center;
    justify-content: space-between;
    padding-left: var(--space-3);
    padding-right: var(--space-3);
    z-index: 700;
  }

  .mobile-bottom-bar span {
    font-size: 0.8125rem;
    color: var(--text);
    font-weight: 600;
  }

  .mobile-bottom-bar a {
    background: var(--primary);
    color: #0E1116;
    font-size: 0.8125rem;
    font-weight: 700;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    flex-shrink: 0;
  }

  .mobile-bottom-bar a:hover {
    background: var(--primary-light);
    box-shadow: 0 0 16px var(--primary-glow);
  }

  body {
    padding-bottom: 64px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .nav-item .nav-icon {
    width: 22px;
    height: 22px;
  }
}

/* roulang page: article */
:root{
  --bg: #0E1116;
  --bg-deep: #0A0C10;
  --bg-raised: #171A21;
  --bg-raised-2: #1D2129;
  --accent: #FF7A1A;
  --accent-soft: rgba(255,122,26,.12);
  --accent-border: rgba(255,122,26,.4);
  --text: #E8EAED;
  --text-muted: #8B94A7;
  --border: rgba(255,255,255,.08);
  --border-strong: rgba(255,255,255,.16);
  --success: #22C55E;
  --warning: #FBBF24;
  --font-main: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
  --font-mono: 'JetBrains Mono','Roboto Mono',monospace;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 12px 32px rgba(0,0,0,.45);
  --sidebar-w: 240px;
  --sidebar-w-tablet: 64px;
  --content-max: 1200px;
  --article-bg: #F7F6F2;
  --article-text: #1F2329;
  --article-card: #FFFFFF;
  --article-border: #E5E7EB;
  --article-muted: #6B7280;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  min-height:100vh;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .2s,background .2s,border-color .2s,box-shadow .2s,transform .2s}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
ul,ol{list-style:none}
.container{max-width:var(--content-max);margin:0 auto;padding:0 32px;width:100%}

.app-shell{display:flex;min-height:100vh}
.sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);
  background:var(--bg-deep);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  z-index:100;transition:transform .3s ease,width .2s ease;
}
.sidebar-brand{
  height:64px;display:flex;align-items:center;
  padding:0 20px;border-bottom:1px solid var(--border);
  flex-shrink:0;gap:10px;
}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--accent);color:#0A0C10;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;flex-shrink:0;
  letter-spacing:0;
}
.logo-wrap{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.logo-text{font-weight:800;font-size:17px;color:var(--text);white-space:nowrap;letter-spacing:.5px}
.logo-sub{font-size:11px;color:var(--text-muted);font-weight:500;letter-spacing:1px}
.sidebar-nav{flex:1;padding:20px 14px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:10px;
  color:var(--text-muted);font-weight:500;font-size:15px;
  border-left:3px solid transparent;
  transition:color .2s,background .2s,border-color .2s;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.nav-item.active{
  color:var(--accent);background:var(--accent-soft);
  border-left-color:var(--accent);
}
.nav-icon{width:22px;height:22px;flex-shrink:0}
.sidebar-cta{
  padding:16px 14px;border-top:1px solid var(--border);
  flex-shrink:0;
}
.cta-label{display:block;font-size:12px;color:var(--text-muted);margin-bottom:10px;text-align:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:12px 24px;border:1px solid transparent;
  transition:all .2s ease;line-height:1.4;white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--accent);color:#0A0C10}
.btn-primary:hover{background:#ff8a35;box-shadow:0 0 24px rgba(255,122,26,.35);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px) scale(.98);box-shadow:none}
.btn-ghost{border-color:var(--accent-border);color:var(--accent);background:transparent}
.btn-ghost:hover{background:var(--accent-soft);border-color:var(--accent);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px) scale(.98)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-block{display:flex;width:100%}
.btn-lg{padding:15px 32px;font-size:16px}

.main-shell{flex:1;margin-left:var(--sidebar-w);min-width:0;display:flex;flex-direction:column}

.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--bg-deep);border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;padding:0 16px;
  z-index:200;
}
.menu-toggle{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:36px;height:36px;padding:6px;border-radius:8px;
}
.menu-toggle:hover{background:rgba(255,255,255,.06)}
.menu-toggle:active{background:rgba(255,255,255,.1)}
.menu-toggle:focus-visible{outline:2px solid var(--accent)}
.menu-toggle span{display:block;height:2px;width:20px;background:var(--text);border-radius:2px;transition:all .3s}
.mobile-logo{font-weight:800;font-size:17px;color:var(--text);padding:0 12px}
.mobile-topbar .btn{padding:7px 14px;font-size:13px}
.mobile-overlay{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);
  z-index:90;opacity:0;pointer-events:none;transition:opacity .3s ease;
}

.main-content{flex:1;padding-top:40px}
.article-cover{
  position:relative;
  padding:32px 0 56px;
  background-size:cover;background-position:center;
  overflow:hidden;
}
.cover-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,.7) 0%,rgba(14,17,22,.92) 70%,rgba(14,17,22,1) 100%);
}
.article-cover .container{position:relative;z-index:1}

.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-muted);
  margin-bottom:28px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(139,148,167,.5)}
.breadcrumb .current{color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:280px}
.breadcrumb .cat-link{color:var(--accent)}

.article-header{max-width:860px}
.article-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--accent-border);
  color:var(--accent);font-size:13px;font-weight:600;
  margin-bottom:20px;background:var(--accent-soft);
}
.article-title{
  font-size:clamp(1.75rem,4vw,2.6rem);
  font-weight:800;line-height:1.3;
  color:var(--text);letter-spacing:.5px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;align-items:center;gap:24px;
  margin-bottom:24px;font-size:14px;color:var(--text-muted);
  flex-wrap:wrap;
}
.meta-item{display:flex;align-items:center;gap:8px}
.meta-item svg{width:16px;height:16px;color:var(--accent)}
.article-summary{
  font-size:16px;line-height:1.8;
  color:#B6BFCD;max-width:760px;
  border-left:3px solid var(--accent);
  padding-left:16px;
}

.article-body-wrap{
  padding:0 32px 64px;
  max-width:var(--content-max);
  margin:0 auto;width:100%;
}
.article-body{
  background:var(--article-bg);
  color:var(--article-text);
  border-radius:20px;
  padding:clamp(24px,4vw,56px);
  box-shadow:0 4px 16px rgba(15,23,42,.08);
  margin-top:-24px;position:relative;z-index:2;
  font-size:16px;line-height:1.9;
}
.article-body h2{
  margin:2.4em 0 .8em;
  font-size:1.45rem;font-weight:800;
  color:#111827;line-height:1.4;
  padding-left:16px;border-left:4px solid var(--accent);
}
.article-body h3{
  margin:2em 0 .7em;
  font-size:1.2rem;font-weight:700;
  color:#1F2937;line-height:1.5;
}
.article-body h4{
  margin:1.6em 0 .6em;
  font-size:1.05rem;font-weight:700;
  color:#374151;
}
.article-body p{margin-bottom:1.5em;color:#1F2329;letter-spacing:.2px}
.article-body a{color:#D97706;text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--accent)}
.article-body img{border-radius:12px;max-width:100%;margin:24px 0;box-shadow:0 4px 16px rgba(15,23,42,.08)}
.article-body blockquote{
  margin:1.8em 0;padding:16px 24px;
  border-left:4px solid var(--accent);
  background:#F0EFEA;border-radius:0 12px 12px 0;
  color:#4B5563;font-style:italic;position:relative;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{
  font-family:var(--font-mono);
  background:rgba(17,24,39,.08);
  padding:2px 8px;border-radius:6px;
  font-size:.9em;color:#D97706;
}
.article-body pre{
  background:#111827;color:#F9FAFB;
  padding:20px 24px;border-radius:12px;
  overflow-x:auto;margin:20px 0;
  font-family:var(--font-mono);font-size:.9rem;
  line-height:1.7;box-shadow:0 4px 16px rgba(0,0,0,.15);
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;
  margin:20px 0;border:1px solid var(--article-border);
  border-radius:12px;overflow:hidden;font-size:.95rem;
}
.article-body table th{
  background:#F3F4F6;font-weight:700;
  padding:12px 16px;border-bottom:1px solid var(--article-border);
  text-align:left;color:#111827;
}
.article-body table td{
  padding:12px 16px;border-bottom:1px solid var(--article-border);
  color:#374151;
}
.article-body table tr:last-child td{border-bottom:none}
.article-body ul,.article-body ol{
  margin:0 0 1.5em 1.2em;line-height:1.8;
}
.article-body ul li{list-style:disc;margin-bottom:.5em}
.article-body ol li{list-style:decimal;margin-bottom:.5em}
.article-body hr{border:none;border-top:1px solid var(--article-border);margin:2em 0}
.article-body strong{font-weight:700;color:#111827}

.article-empty{
  text-align:center;padding:80px 24px;
}
.empty-icon{
  width:80px;height:80px;border-radius:50%;
  background:rgba(255,122,26,.1);border:1px solid var(--accent-border);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 24px;font-size:32px;color:var(--accent);
}
.article-empty h2{font-size:1.6rem;font-weight:700;color:#111827;margin-bottom:12px}
.article-empty p{color:var(--article-muted);margin-bottom:24px}

.article-pager{
  max-width:var(--content-max);
  margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.pager-link{
  background:var(--bg-raised);border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:24px 28px;display:flex;flex-direction:column;gap:6px;
  transition:border-color .2s,background .2s,box-shadow .2s,transform .2s;
}
.pager-link:hover{border-color:var(--accent-border);box-shadow:var(--shadow-card);transform:translateY(-2px)}
.pager-link:active{transform:translateY(0)}
.pager-link:focus-visible{outline:2px solid var(--accent)}
.pager-prev{align-items:flex-start}
.pager-next{align-items:flex-end;text-align:right}
.pager-label{
  font-size:12px;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:1px;
  display:flex;align-items:center;gap:8px;
}
.pager-prev .pager-label::before{content:'←'}
.pager-next .pager-label::after{content:'→'}
.pager-title{font-weight:700;color:var(--text);font-size:16px}

.related-section{
  max-width:var(--content-max);
  margin:0 auto;padding:64px 32px 80px;
}
.related-head{margin-bottom:32px}
.related-head h2{
  font-size:clamp(1.4rem,2.5vw,1.8rem);
  font-weight:800;color:var(--text);margin-bottom:6px;
}
.related-head p{color:var(--text-muted);font-size:14px}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.related-card{
  display:flex;flex-direction:column;
  background:var(--bg-raised);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.related-card:hover{border-color:var(--accent-border);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.related-card:active{transform:translateY(0)}
.related-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.related-thumb{aspect-ratio:16/10;overflow:hidden;position:relative}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-thumb::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(10,12,16,.4));
}
.related-body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--accent-border);color:var(--accent);
  font-size:12px;font-weight:600;margin-bottom:12px;
  background:var(--accent-soft);
}
.related-body h3{font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:8px;line-height:1.4}
.related-body h3:hover{color:var(--accent)}
.related-body p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:12px}
.related-link{color:var(--accent);font-size:14px;font-weight:600;margin-top:auto;display:inline-flex;align-items:center;gap:6px}
.related-link::after{content:'→';transition:transform .2s}
.related-card:hover .related-link::after{transform:translateX(4px)}

.article-cta{
  max-width:var(--content-max);margin:0 auto;
  padding:0 32px 80px;
}
.article-cta-inner{
  background:var(--bg-raised);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:40px 32px;display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:20px;
}
.article-cta h3{font-size:1.25rem;font-weight:700;color:var(--text);margin-bottom:6px}
.article-cta p{color:var(--text-muted);font-size:14px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

.footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  padding:56px 0 32px;margin-top:auto;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;margin-bottom:40px;
}
.footer-brand .foot-logo{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;color:var(--text);
  margin-bottom:14px;
}
.foot-mark{
  width:32px;height:32px;border-radius:8px;
  background:var(--accent);color:#0A0C10;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;
}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;max-width:280px}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);
  margin-bottom:16px;letter-spacing:.5px;
}
.footer-col a{
  display:block;font-size:14px;color:var(--text-muted);
  padding:5px 0;transition:color .2s,transform .2s;
}
.footer-col a:hover{color:var(--accent);transform:translateX(3px)}
.footer-col p{font-size:14px;color:var(--text-muted);padding:5px 0}
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:24px;display:flex;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-muted);
  flex-wrap:wrap;gap:8px;
}

@media (max-width:1023px){
  .sidebar{width:var(--sidebar-w-tablet)}
  .sidebar-brand{padding:0;justify-content:center}
  .logo-wrap,.logo-sub{display:none}
  .logo-mark{margin:0 auto}
  .sidebar-nav{padding:16px 10px;align-items:center}
  .nav-item{justify-content:center;padding:12px;width:44px;height:44px}
  .nav-label{display:none}
  .sidebar-cta{display:none}
  .main-shell{margin-left:var(--sidebar-w-tablet)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .sidebar{
    transform:translateX(-100%);
    width:260px;
    box-shadow:4px 0 24px rgba(0,0,0,.5);
  }
  body.menu-open .sidebar{transform:translateX(0)}
  body.menu-open .mobile-overlay{opacity:1;pointer-events:auto}
  .mobile-overlay{display:block}
  .mobile-topbar{display:flex}
  .main-shell{margin-left:0}
  .main-content{padding-top:56px}
  .sidebar-brand{padding:0 20px;justify-content:flex-start}
  .logo-wrap,.logo-sub{display:flex}
  .sidebar-nav{align-items:stretch;padding:20px 16px}
  .nav-item{justify-content:flex-start;padding:12px 14px;width:auto;height:auto}
  .nav-label{display:inline-block}
  .sidebar-cta{display:block}
  .container{padding:0 16px}
  .article-cover{padding:24px 0 48px}
  .breadcrumb{font-size:12px;margin-bottom:20px}
  .article-title{font-size:clamp(1.5rem,5.5vw,1.8rem);margin-bottom:16px}
  .article-meta{gap:16px}
  .article-summary{font-size:14px}
  .article-body-wrap{padding:0 16px 48px}
  .article-body{padding:20px 18px;border-radius:16px}
  .article-body table{display:block;overflow-x:auto;font-size:.85rem}
  .article-body pre{font-size:.82rem;padding:16px}
  .article-pager{grid-template-columns:1fr;padding:0 16px}
  .related-section{padding:48px 16px 56px}
  .related-grid{grid-template-columns:1fr}
  .article-cta{padding:0 16px 56px}
  .article-cta-inner{padding:28px 20px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer{padding:40px 0 24px}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr;gap:20px}
  .footer-bottom{flex-direction:column;text-align:center}
  .related-grid{grid-template-columns:1fr}
  .article-pager{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root {
            --bg-primary: #0E1116;
            --bg-card: #171A21;
            --bg-deep: #0A0D12;
            --bg-elevated: #1C212B;
            --accent: #F59E0B;
            --accent-hover: #FFB84D;
            --accent-soft: rgba(245, 158, 11, 0.12);
            --accent-border: rgba(245, 158, 11, 0.4);
            --accent-glow: rgba(245, 158, 11, 0.2);
            --text-primary: #F1F3F7;
            --text-secondary: #8B94A7;
            --text-muted: #5A6270;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.16);
            --success: #22C55E;
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.45);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: "JetBrains Mono", "Roboto Mono", monospace;
            --sidebar-width: 240px;
            --topbar-h: 56px;
        }

        *,
        *::before,
        *::after {
            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: 1.75;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 clamp(16px, 4vw, 40px);
        }

        .app-shell {
            min-height: 100vh;
            display: flex;
        }

        .main-wrap {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            background: var(--bg-deep);
            border-right: 1px solid var(--border);
            z-index: 120;
            display: flex;
            flex-direction: column;
            padding: 20px 14px 24px;
            transition: transform 0.3s ease, width 0.3s ease;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 4px 10px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 18px;
            min-height: 64px;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent) 0%, #D97706 100%);
            color: #0A0D12;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 18px var(--accent-glow);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .brand-sub {
            font-size: 11px;
            color: var(--text-secondary);
            letter-spacing: 2px;
            margin-top: 2px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .nav-item svg {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }

        .nav-item:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-item.active {
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 600;
        }

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            border-radius: 0 3px 3px 0;
            background: var(--accent);
        }

        .sidebar-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #0A0D12;
            font-size: 14px;
            font-weight: 700;
            margin-top: 12px;
            transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
        }

        .sidebar-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 0 24px var(--accent-glow);
        }

        .sidebar-cta:active {
            transform: translateY(2px);
        }

        .sidebar-cta:focus-visible {
            outline: 2px solid var(--accent-hover);
            outline-offset: 2px;
        }

        .sidebar-cta svg {
            width: 16px;
            height: 16px;
        }

        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 110;
            height: var(--topbar-h);
            background: rgba(14, 17, 22, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-topbar .mt-left {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            transition: background 0.2s ease;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .hamburger:active {
            background: rgba(255, 255, 255, 0.1);
        }

        .hamburger svg {
            width: 22px;
            height: 22px;
        }

        .mt-brand {
            font-size: 17px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .mt-cta {
            padding: 7px 14px;
            background: var(--accent);
            color: #0A0D12;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 700;
            transition: background 0.2s ease;
        }

        .mt-cta:hover {
            background: var(--accent-hover);
        }

        .mt-cta:active {
            transform: translateY(1px);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 115;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .hero {
            position: relative;
            background: var(--bg-primary);
            min-height: 640px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(14, 17, 22, 0.94) 0%, rgba(14, 17, 22, 0.75) 55%, rgba(14, 17, 22, 0.4) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border: 1px solid var(--accent-border);
            border-radius: var(--radius-pill);
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
            color: var(--text-primary);
            max-width: 720px;
        }

        .hero-title .highlight {
            color: var(--accent);
        }

        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.125rem);
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.1s ease, border-color 0.2s ease;
            line-height: 1;
        }

        .btn-primary {
            background: var(--accent);
            color: #0A0D12;
            font-weight: 700;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 0 28px var(--accent-glow);
        }

        .btn-primary:active {
            transform: translateY(2px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-hover);
            outline-offset: 3px;
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-hover);
        }

        .btn-ghost:hover {
            border-color: var(--accent-border);
            color: var(--accent);
            background: var(--accent-soft);
        }

        .btn-ghost:active {
            transform: translateY(2px);
        }

        .btn-ghost:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-lg {
            padding: 16px 34px;
            font-size: 16px;
        }

        .trust-bar {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            background: var(--bg-deep);
        }

        .trust-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 14px 0;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
        }

        .trust-item svg {
            width: 18px;
            height: 18px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: var(--bg-deep);
        }

        .section-header {
            margin-bottom: 48px;
            max-width: 640px;
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-sub {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-hover);
        }

        .feature-num {
            font-family: var(--font-mono);
            font-size: 42px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--accent);
            line-height: 1;
            flex-shrink: 0;
            width: 60px;
            opacity: 0.9;
        }

        .feature-body {
            flex: 1;
        }

        .feature-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .feature-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 520px;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--accent-soft);
            border: 1px solid var(--accent-border);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-bottom: 14px;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
            color: var(--accent);
        }

        .steps-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: relative;
        }

        .steps-list::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 40px;
            bottom: 40px;
            width: 2px;
            border-left: 2px dashed var(--accent-border);
        }

        .step-item {
            display: flex;
            gap: 20px;
            position: relative;
        }

        .step-dot {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: 2px solid var(--accent);
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 16px;
            color: var(--accent);
            flex-shrink: 0;
            z-index: 1;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.08);
        }

        .step-content {
            padding-top: 6px;
        }

        .step-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .steps-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            position: relative;
        }

        .steps-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .steps-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(14, 17, 22, 0.5) 100%);
            pointer-events: none;
        }

        .hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .hot-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .hot-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-hover);
        }

        .hot-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .hot-card:hover .hot-card-img img {
            transform: scale(1.04);
        }

        .hot-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            background: rgba(14, 17, 22, 0.75);
            backdrop-filter: blur(6px);
            border: 1px solid var(--accent-border);
            color: var(--accent);
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
        }

        .hot-card-content {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .hot-card-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .hot-card-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .hot-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            transition: color 0.2s ease;
        }

        .hot-link:hover {
            color: var(--accent-hover);
        }

        .hot-link svg {
            width: 15px;
            height: 15px;
            transition: transform 0.2s ease;
        }

        .hot-link:hover svg {
            transform: translateX(4px);
        }

        .faq-wrap {
            max-width: 820px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item.open {
            border-color: var(--accent-border);
            background: var(--bg-elevated);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: color 0.2s ease;
        }

        .faq-q:hover {
            color: var(--accent);
        }

        .faq-q:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
            border-radius: var(--radius-sm);
        }

        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            position: relative;
            border-radius: 50%;
            border: 1.5px solid var(--accent);
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--accent);
            border-radius: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .faq-icon::before {
            width: 10px;
            height: 1.5px;
        }

        .faq-icon::after {
            width: 1.5px;
            height: 10px;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-icon {
            background: var(--accent);
            transform: rotate(90deg);
        }

        .faq-item.open .faq-icon::before {
            background: #0A0D12;
        }

        .faq-item.open .faq-icon::after {
            background: #0A0D12;
            transform: translate(-50%, -50%) scaleY(0);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-a {
            max-height: 200px;
        }

        .faq-a-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin: 0 24px;
            padding-left: 0;
            padding-right: 0;
            margin-bottom: 0;
        }

        .cta-section {
            position: relative;
            background: var(--bg-deep);
            padding: 80px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
        }

        .cta-inner {
            position: relative;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .cta-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .cta-text {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        .footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .foot-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .foot-mark {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--accent);
            color: #0A0D12;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 800;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 5px 0;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-col p {
            color: var(--text-secondary);
            font-size: 14px;
            padding: 3px 0;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            color: var(--text-muted);
            font-size: 13px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .mobile-cta-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            padding-bottom: env(safe-area-inset-bottom);
            background: rgba(14, 17, 22, 0.96);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 100;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-left: 20px;
            padding-right: 20px;
            transition: transform 0.3s ease;
        }

        .mobile-cta-bar.hidden {
            transform: translateY(100%);
        }

        .mobile-cta-bar .mcb-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.4;
            min-width: 0;
        }

        .mobile-cta-bar .mcb-btn {
            flex-shrink: 0;
            padding: 11px 20px;
            background: var(--accent);
            color: #0A0D12;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            transition: background 0.2s ease, transform 0.1s ease;
        }

        .mobile-cta-bar .mcb-btn:hover {
            background: var(--accent-hover);
        }

        .mobile-cta-bar .mcb-btn:active {
            transform: scale(0.97);
        }

        @media (max-width: 1023px) {
            :root {
                --sidebar-width: 64px;
            }
            .sidebar {
                padding: 20px 10px 24px;
            }
            .brand {
                justify-content: center;
                padding: 4px 0 20px;
            }
            .brand-mark {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }
            .brand-text {
                display: none;
            }
            .nav-item {
                justify-content: center;
                padding: 12px;
            }
            .nav-item svg {
                width: 22px;
                height: 22px;
            }
            .nav-item .nav-label {
                display: none;
            }
            .nav-item.active::before {
                left: auto;
                right: 0;
                left: auto;
                width: 3px;
            }
            .sidebar-cta {
                padding: 10px;
                justify-content: center;
            }
            .sidebar-cta span {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hot-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .steps-media img {
                height: 300px;
            }
        }

        @media (max-width: 767px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar .brand,
            .sidebar .brand-text,
            .sidebar .nav-item .nav-label,
            .sidebar-cta span {
                display: flex;
            }
            .sidebar .brand {
                justify-content: flex-start;
                padding: 4px 10px 20px;
            }
            .sidebar .brand-text {
                display: flex;
            }
            .sidebar .nav-item {
                justify-content: flex-start;
                padding: 12px 14px;
            }
            .sidebar .nav-item svg {
                width: 20px;
                height: 20px;
            }
            .sidebar .nav-item .nav-label {
                display: block;
            }
            .sidebar-cta span {
                display: block;
            }
            .sidebar-cta {
                padding: 11px 16px;
                justify-content: center;
            }
            .main-wrap {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .sidebar-overlay.show {
                display: block;
            }
            .mobile-cta-bar {
                display: flex;
            }
            .hero {
                min-height: 520px;
                padding-top: 40px;
                padding-bottom: 60px;
            }
            .hero-content {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-sub {
                font-size: 0.9375rem;
                margin-bottom: 24px;
            }
            .btn-lg {
                padding: 13px 22px;
                font-size: 14px;
            }
            .trust-inner {
                justify-content: center;
                gap: 10px 18px;
                padding: 12px 0;
            }
            .section {
                padding: 56px 0;
            }
            .feature-item {
                padding: 22px 20px;
                gap: 16px;
                flex-wrap: wrap;
            }
            .feature-num {
                font-size: 32px;
            }
            .hot-grid {
                grid-template-columns: 1fr;
            }
            .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-a-inner {
                padding: 12px 18px 18px;
                font-size: 14px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .footer {
                padding: 48px 0 110px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 420px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: auto;
            }
            .steps-media img {
                height: 220px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .mt-cta {
                padding: 6px 10px;
                font-size: 12px;
            }
        }