/* roulang page: index */
:root{
  --bg-main:#0A0F1F;
  --bg-deep:#080C18;
  --bg-card:#111A30;
  --bg-glass:rgba(255,255,255,0.06);
  --brand:#2D7FF9;
  --brand-cyan:#22D3EE;
  --accent:#A3E635;
  --text:#F1F5F9;
  --text-sub:#9AA8BC;
  --text-weak:#64748B;
  --border:rgba(255,255,255,0.08);
  --border-hover:rgba(255,255,255,0.18);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 40px rgba(0,0,0,0.30);
  --glow:0 0 20px rgba(45,127,249,0.55);
  --grad-primary:linear-gradient(135deg,#2D7FF9,#22D3EE);
  --font-head:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --space-lg:96px;
  --space-md:56px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--bg-main);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .3s ease,opacity .3s ease}
a:hover{color:#60a5fa}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}

.grid-container{max-width:1200px}
.section-pad{padding:var(--space-lg) 0}
@media(max-width:639px){.section-pad{padding:var(--space-md) 0}}

.section-header{text-align:center;margin-bottom:56px}
.section-header h2{
  font-family:var(--font-head);
  font-size:30px;
  font-weight:700;
  letter-spacing:-0.5px;
  color:var(--text);
  margin-bottom:12px;
  position:relative;
  display:inline-block;
}
.section-header h2::after{
  content:'';
  display:block;
  width:48px;
  height:3px;
  background:var(--grad-primary);
  border-radius:3px;
  margin:14px auto 0;
  box-shadow:0 0 12px rgba(45,127,249,.6);
}
.section-header p{color:var(--text-sub);font-size:16px;max-width:620px;margin:0 auto}
.section-tag{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--brand-cyan);
  background:rgba(34,211,238,0.10);
  border:1px solid rgba(34,211,238,0.25);
  padding:4px 16px;
  border-radius:20px;
  margin-bottom:16px;
  letter-spacing:1px;
}
@media(max-width:639px){
  .section-header{margin-bottom:36px}
  .section-header h2{font-size:24px}
  .section-header p{font-size:14px}
}

/* -- Button System -- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--grad-primary);
  color:#fff;
  font-size:15px;font-weight:600;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  border:none;
  box-shadow:var(--glow);
  transition:all .3s ease;
  cursor:pointer;
  text-align:center;
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(45,127,249,0.75);
  filter:brightness(1.15);
}
.btn-primary:active{
  transform:translateY(1px) scale(0.98);
  box-shadow:0 0 12px rgba(45,127,249,0.4);
}
.btn-primary:focus-visible,
.btn-ghost:focus-visible{
  outline:2px solid var(--brand-cyan);
  outline-offset:3px;
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,0.04);
  color:var(--text);
  font-size:15px;font-weight:500;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,0.30);
  transition:all .3s ease;
  cursor:pointer;
  text-align:center;
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand-cyan);
  background:rgba(45,127,249,0.10);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0) scale(0.98)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:8px}
.btn-block{display:flex;width:100%}
.btn-large{padding:16px 48px;font-size:16px}
@media(max-width:639px){
  .btn-primary,.btn-ghost{width:100%;padding:14px 20px}
  .btn-primary.btn-large,.btn-ghost.btn-large{padding:16px 28px}
}

/* -- Header / Nav -- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(10,15,31,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(8,12,24,0.95);
  box-shadow:0 4px 30px rgba(0,0,0,0.4);
  border-bottom-color:rgba(45,127,249,0.15);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.logo-ico{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--grad-primary);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;
  box-shadow:0 0 16px rgba(45,127,249,0.5);
}
.logo-text{
  font-family:var(--font-head);
  font-size:22px;
  font-weight:800;
  color:var(--text);
  letter-spacing:-0.5px;
  line-height:1;
}
.logo-tag{
  font-size:13px;
  font-weight:400;
  color:var(--text-sub);
  opacity:0.75;
  line-height:1;
  padding-top:2px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-sub);
  padding:8px 2px;
  transition:color .3s ease;
}
.nav-link::after{
  content:'';
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--grad-primary);
  border-radius:2px;
  transition:width .3s ease;
  box-shadow:0 0 8px rgba(45,127,249,0.6);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--brand-cyan)}
.nav-link.active::after{width:100%}
.nav-cta{margin-left:8px}
.hamburger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  width:44px;height:44px;
  padding:10px;
  border-radius:8px;
  border:1px solid var(--border);
  background:rgba(255,255,255,0.05);
}
.hamburger span{
  display:block;
  width:100%;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:all .3s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
@media(max-width:768px){
  .main-nav{
    position:fixed;
    top:72px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(10,15,31,0.97);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid var(--border);
    padding:16px 24px 24px;
    transform:translateY(-120%);
    opacity:0;
    transition:transform .35s ease,opacity .35s ease;
    box-shadow:0 20px 50px rgba(0,0,0,0.5);
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
  }
  .nav-link{
    padding:14px 4px;
    font-size:16px;
    border-bottom:1px solid var(--border);
  }
  .nav-link:last-of-type{border-bottom:none}
  .nav-cta{margin:16px 0 4px}
  .nav-cta .btn-primary{width:100%}
  .hamburger{display:flex}
}

/* -- Hero -- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:120px 0 80px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(10,15,31,0.94) 30%,rgba(10,15,31,0.72) 60%,rgba(10,15,31,0.55) 100%);
}
.hero-content{position:relative;z-index:2;width:100%}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(45,127,249,0.15);
  border:1px solid rgba(45,127,249,0.35);
  color:var(--brand-cyan);
  font-size:13px;font-weight:600;
  padding:6px 18px;
  border-radius:30px;
  margin-bottom:24px;
  letter-spacing:0.5px;
}
.hero-badge::before{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px var(--accent);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
.hero h1{
  font-family:var(--font-head);
  font-size:46px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-1px;
  color:var(--text);
  margin-bottom:20px;
}
.hero h1 .highlight{
  background:var(--grad-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-subtitle{
  font-size:18px;
  color:var(--text-sub);
  max-width:560px;
  margin-bottom:32px;
  line-height:1.8;
}
.hero-actions{
  display:flex;
  gap:16px;
  margin-bottom:48px;
  flex-wrap:wrap;
}
.hero-stats{
  display:flex;
  gap:48px;
  flex-wrap:wrap;
}
.stat-item{display:flex;flex-direction:column;gap:4px}
.stat-item strong{
  font-size:28px;
  font-weight:800;
  color:var(--text);
  font-family:var(--font-head);
  background:var(--grad-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-item span{font-size:13px;color:var(--text-weak)}
.hero-visual{padding-left:32px}
.hero-card{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.15);
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
  background:rgba(17,26,48,0.95);
  transform:rotate(2deg);
  transition:transform .4s ease;
}
.hero-card:hover{transform:rotate(0deg) scale(1.02)}
.hero-card img{width:100%;height:auto;display:block}
.hero-card::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(10,15,31,0.4),transparent);
}
.scroll-hint{
  position:absolute;
  bottom:28px;left:50%;
  transform:translateX(-50%);
  width:26px;height:42px;
  border:2px solid var(--text-sub);
  border-radius:16px;
  animation:bounce 2s infinite;
  z-index:3;
}
.scroll-hint::before{
  content:'';
  position:absolute;
  top:8px;left:50%;
  width:4px;height:8px;
  background:var(--brand-cyan);
  border-radius:2px;
  transform:translateX(-50%);
}
@keyframes bounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}
@media(max-width:1024px){
  .hero{padding:110px 0 70px;min-height:auto}
  .hero h1{font-size:38px}
  .hero-visual{padding-left:0;margin-top:40px}
}
@media(max-width:639px){
  .hero{padding:100px 0 60px;min-height:auto}
  .hero h1{font-size:30px}
  .hero-subtitle{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch;margin-bottom:36px}
  .hero-stats{gap:24px}
  .hero-card{transform:none}
  .scroll-hint{display:none}
}

/* -- Timeline Section -- */
.agenda-section{
  padding:var(--space-lg) 0;
  background:linear-gradient(180deg,var(--bg-main) 0%,var(--bg-card) 100%);
  position:relative;
}
@media(max-width:639px){.agenda-section{padding:var(--space-md) 0}}
.timeline{position:relative;max-width:900px;margin:0 auto;padding:20px 0}
.tl-line{
  position:absolute;
  left:50%;top:0;bottom:0;
  width:2px;
  background:linear-gradient(to bottom,var(--brand),var(--brand-cyan));
  transform:translateX(-50%);
  box-shadow:0 0 20px rgba(45,127,249,0.3);
}
.tl-row{
  display:flex;
  align-items:center;
  margin-bottom:28px;
  position:relative;
}
.tl-row:last-child{margin-bottom:0}
.tl-card{
  width:calc(50% - 44px);
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:all .3s ease;
  box-shadow:var(--shadow);
  position:relative;
}
.tl-card:hover{
  background:rgba(255,255,255,0.10);
  border-color:var(--border-hover);
  transform:translateY(-4px);
}
.tl-left{margin-right:auto}
.tl-right{margin-left:auto}
.tl-dot{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  width:18px;height:18px;
  border-radius:50%;
  background:var(--bg-main);
  border:3px solid var(--brand);
  box-shadow:0 0 0 4px rgba(45,127,249,0.15),0 0 20px rgba(45,127,249,0.4);
  z-index:2;
}
.tl-dot::after{
  content:'';
  position:absolute;
  inset:4px;
  border-radius:50%;
  background:var(--brand-cyan);
}
.tl-time{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--brand-cyan);
  background:rgba(45,127,249,0.12);
  border:1px solid rgba(45,127,249,0.3);
  padding:2px 12px;
  border-radius:16px;
  margin-bottom:10px;
  letter-spacing:0.5px;
}
.tl-card h4{font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px}
.tl-card p{font-size:14px;color:var(--text-sub);margin-bottom:12px;line-height:1.6}
.tl-loc{
  font-size:13px;
  color:var(--text-weak);
  display:flex;align-items:center;gap:6px;
}
.tl-loc i{font-size:12px;color:var(--brand-cyan)}
.tl-live{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12px;
  color:var(--accent);
  background:rgba(163,230,53,0.1);
  border:1px solid rgba(163,230,53,0.3);
  padding:2px 10px;
  border-radius:14px;
  margin-left:8px;
}
.tl-live i{font-size:10px}
@media(max-width:639px){
  .timeline{padding-left:20px}
  .tl-line{left:10px;transform:translateX(0)}
  .tl-row{flex-direction:column;align-items:stretch}
  .tl-card{width:calc(100% - 30px);margin-left:30px !important;margin-right:0 !important}
  .tl-dot{left:10px;transform:translateX(0)}
  .tl-dot::after{content:'';position:absolute;inset:4px;border-radius:50%;background:transparent}
  .tl-dot::before{
    content:attr(data-time);
    position:absolute;
    left:30px;
    top:0;
    font-size:12px;
    font-weight:600;
    color:var(--brand-cyan);
    white-space:nowrap;
    background:var(--bg-main);
    padding:0 8px;
    border-radius:4px;
  }
}

/* -- Guests Section -- */
.guests-section{
  padding:var(--space-lg) 0;
  background:var(--bg-main);
  position:relative;
}
@media(max-width:639px){.guests-section{padding:var(--space-md) 0}}
.guest-card{
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:all .3s ease;
  box-shadow:var(--shadow);
  height:100%;
  display:flex;
  flex-direction:column;
}
.guest-card:hover{
  background:rgba(255,255,255,0.10);
  border-color:var(--border-hover);
  transform:translateY(-4px);
}
.guest-card.main{
  padding:36px;
  background:rgba(45,127,249,0.08);
  border-color:rgba(45,127,249,0.3);
}
.guest-avatar{
  border-radius:12px;
  overflow:hidden;
  margin-bottom:20px;
  aspect-ratio:1/1;
  background:var(--bg-card);
  position:relative;
  border:1px solid var(--border);
}
.guest-avatar img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.guest-card:hover .guest-avatar img{transform:scale(1.03)}
.guest-avatar::after{
  content:'一竞技';
  position:absolute;
  bottom:10px;right:10px;
  background:rgba(10,15,31,0.75);
  color:var(--text-sub);
  font-size:11px;
  padding:2px 10px;
  border-radius:12px;
  backdrop-filter:blur(4px);
}
.guest-info h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:4px}
.guest-info .guest-title{
  display:inline-block;
  font-size:13px;
  color:var(--brand-cyan);
  background:rgba(34,211,238,0.08);
  border:1px solid rgba(34,211,238,0.2);
  padding:2px 12px;
  border-radius:14px;
  margin-bottom:12px;
}
.guest-info p{font-size:14px;color:var(--text-sub);line-height:1.7}
.guest-card.main .guest-info h3{font-size:24px}

/* -- Tickets Section -- */
.tickets-section{
  padding:var(--space-lg) 0;
  background:linear-gradient(180deg,var(--bg-card) 0%,var(--bg-main) 100%);
}
@media(max-width:639px){.tickets-section{padding:var(--space-md) 0}}
.ticket-card{
  position:relative;
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px 30px;
  text-align:center;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:all .3s ease;
  box-shadow:var(--shadow);
  height:100%;
  display:flex;
  flex-direction:column;
}
.ticket-card:hover{
  background:rgba(255,255,255,0.10);
  border-color:var(--border-hover);
  transform:translateY(-6px);
  box-shadow:0 20px 50px rgba(0,0,0,0.4);
}
.ticket-card.featured{
  background:rgba(45,127,249,0.12);
  border-color:rgba(45,127,249,0.45);
  transform:scale(1.02);
  box-shadow:0 0 40px rgba(45,127,249,0.2),var(--shadow);
  z-index:2;
}
.ticket-card.featured:hover{
  background:rgba(45,127,249,0.18);
  border-color:rgba(45,127,249,0.6);
  transform:scale(1.02) translateY(-6px);
  box-shadow:0 0 50px rgba(45,127,249,0.3),0 20px 50px rgba(0,0,0,0.4);
}
.hot-badge{
  position:absolute;
  top:-12px;right:20px;
  background:var(--grad-primary);
  color:#fff;
  font-size:12px;font-weight:700;
  padding:4px 16px;
  border-radius:16px;
  box-shadow:0 4px 16px rgba(45,127,249,0.4);
  letter-spacing:1px;
}
.ticket-card h3{
  font-size:15px;
  font-weight:600;
  color:var(--text-sub);
  text-transform:uppercase;
  letter-spacing:2px;
  margin-bottom:18px;
}
.ticket-card.featured h3{color:var(--brand-cyan)}
.ticket-price{
  font-family:var(--font-head);
  font-size:44px;
  font-weight:800;
  color:var(--text);
  margin-bottom:24px;
  line-height:1;
}
.ticket-price small{font-size:16px;font-weight:500;color:var(--text-sub)}
.ticket-features{
  list-style:none;
  padding:0;
  margin:0 0 28px;
  flex:1;
}
.ticket-features li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:14px;
  text-align:left;
}
.ticket-features li i{
  color:var(--brand-cyan);
  font-size:13px;
  margin-top:4px;
  flex-shrink:0;
}
.ticket-features li.off{color:var(--text-weak);text-decoration:line-through;opacity:0.6}
.ticket-features li.off i{color:var(--text-weak)}
@media(max-width:639px){
  .ticket-card{padding:28px 20px;margin-bottom:28px}
  .ticket-card.featured{transform:scale(1)}
  .ticket-card.featured:hover{transform:scale(1) translateY(-4px)}
  .ticket-price{font-size:36px}
}

/* -- Register CTA -- */
.register-section{
  padding:var(--space-lg) 0;
  position:relative;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  overflow:hidden;
}
.register-section::before{
  content:'';
  position:absolute;
  inset:0;
  background:rgba(10,15,31,0.88);
  backdrop-filter:blur(4px);
}
.register-panel{
  position:relative;
  z-index:2;
  max-width:880px;
  margin:0 auto;
  background:rgba(17,26,48,0.72);
  border:1px solid var(--border);
  border-radius:20px;
  padding:48px;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:0 20px 60px rgba(0,0,0,0.5),0 0 60px rgba(45,127,249,0.15);
}
.register-panel .section-header{margin-bottom:32px}
.register-form .form-group{margin-bottom:20px}
.register-form label{
  display:block;
  font-size:13px;
  font-weight:500;
  color:var(--text-sub);
  margin-bottom:6px;
}
.register-form input,
.register-form select{
  width:100%;
  height:48px;
  background:rgba(10,15,31,0.6);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:8px;
  padding:0 16px;
  font-size:15px;
  color:var(--text);
  transition:border-color .3s ease,box-shadow .3s ease;
  outline:none;
}
.register-form input::placeholder{color:var(--text-weak)}
.register-form input:focus,
.register-form select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(45,127,249,0.2),0 0 20px rgba(45,127,249,0.15);
}
.register-form select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%239AA8BC' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 16px center;
  background-size:12px;
  padding-right:44px;
  cursor:pointer;
}
.register-form select option{background:var(--bg-card);color:var(--text)}
.register-form .form-error{
  color:#ef4444;
  font-size:13px;
  margin-top:4px;
  display:none;
}
.register-form input.error{border-color:#ef4444}
.register-form input.error ~ .form-error{display:block}
.register-submit-row{text-align:center;margin-top:26px}
.register-note{
  text-align:center;
  font-size:13px;
  color:var(--text-weak);
  margin-top:14px;
}
@media(max-width:639px){
  .register-panel{padding:32px 20px}
  .register-panel .section-header h2{font-size:22px}
}

/* -- News Section -- */
.news-section{
  padding:var(--space-lg) 0;
  background:var(--bg-main);
}
@media(max-width:639px){.news-section{padding:var(--space-md) 0}}
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all .3s ease;
  box-shadow:var(--shadow);
  backdrop-filter:blur(8px);
  color:var(--text);
}
.news-card:hover{
  background:rgba(255,255,255,0.10);
  border-color:var(--border-hover);
  transform:translateY(-4px);
  box-shadow:0 20px 50px rgba(0,0,0,0.4);
  color:var(--text);
}
.news-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-card);
}
.news-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-cat{
  position:absolute;
  top:12px;left:12px;
  background:rgba(45,127,249,0.85);
  color:#fff;
  font-size:12px;font-weight:600;
  padding:4px 14px;
  border-radius:16px;
  backdrop-filter:blur(4px);
}
.news-date{
  position:absolute;
  top:12px;right:12px;
  background:rgba(10,15,31,0.75);
  color:var(--text-sub);
  font-size:12px;
  padding:4px 12px;
  border-radius:12px;
  backdrop-filter:blur(4px);
}
.news-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-body h3{
  font-family:var(--font-head);
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.45;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.65;
  flex:1;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:12px;
}
.news-more{
  font-size:13px;
  font-weight:600;
  color:var(--brand-cyan);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .3s ease;
}
.news-card:hover .news-more{gap:12px}
.empty-state{
  text-align:center;
  padding:60px 20px;
  background:var(--bg-glass);
  border:1px dashed var(--border);
  border-radius:var(--radius);
  color:var(--text-sub);
  font-size:15px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
}
.empty-state i{font-size:24px;color:var(--text-weak)}
@media(max-width:639px){
  .news-body{padding:16px}
  .news-body h3{font-size:16px}
}

/* -- FAQ -- */
.faq-section{
  padding:var(--space-lg) 0;
  background:linear-gradient(180deg,var(--bg-main) 0%,var(--bg-card) 100%);
}
@media(max-width:639px){.faq-section{padding:var(--space-md) 0}}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:14px;
  overflow:hidden;
  transition:all .3s ease;
  backdrop-filter:blur(8px);
}
.faq-item:hover{border-color:var(--border-hover)}
.faq-item.active{
  border-color:rgba(45,127,249,0.35);
  background:rgba(45,127,249,0.06);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  width:100%;
  padding:20px 24px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  background:none;
  border:none;
  cursor:pointer;
  transition:color .3s ease;
  gap:16px;
}
.faq-question:hover{color:var(--brand-cyan)}
.faq-icon{
  flex-shrink:0;
  width:28px;height:28px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--border-hover);
  transition:all .3s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:'';
  position:absolute;
  top:50%;left:50%;
  background:var(--brand-cyan);
  border-radius:2px;
  transition:all .3s ease;
}
.faq-icon::before{
  width:12px;height:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::after{
  width:2px;height:12px;
  transform:translate(-50%,-50%);
}
.faq-item.active .faq-icon::after{height:0}
.faq-answer{
  display:none;
  padding:0 24px 20px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  border-top:1px solid var(--border);
  margin:0 24px;
  padding-left:0;
  padding-right:0;
  padding-top:16px;
}
@media(max-width:639px){
  .faq-question{padding:16px 16px;font-size:14px}
  .faq-answer{padding-bottom:16px;margin:0 16px}
}

/* -- Footer -- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid rgba(45,127,249,0.2);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--grad-primary);
  box-shadow:0 0 20px rgba(45,127,249,0.4);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
}
.footer-brand .logo-ico{width:32px;height:32px;font-size:14px;border-radius:8px}
.footer-brand .logo-text{font-size:20px}
.footer-brand .logo-tag{font-size:12px}
.footer-brand p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin-top:12px;
  max-width:280px;
}
.footer-col h4{
  font-family:var(--font-head);
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  position:relative;
  padding-bottom:8px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  bottom:0;left:0;
  width:24px;height:2px;
  background:var(--grad-primary);
  border-radius:2px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  color:var(--text-sub);
  font-size:14px;
  transition:color .3s ease,padding-left .3s ease;
}
.footer-col ul li a:hover{
  color:var(--brand-cyan);
  padding-left:4px;
}
.footer-col ul li span{
  color:var(--text-sub);
  font-size:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.footer-col ul li span i{color:var(--brand-cyan);font-size:12px}
.footer-bottom{
  border-top:1px solid var(--border);
  margin-top:48px;
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
}
.footer-bottom span{
  font-size:13px;
  color:var(--text-weak);
}
.footer-newsletter{
  display:flex;
  gap:8px;
  margin-top:4px;
}
.footer-newsletter input{
  flex:1;
  height:40px;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border);
  border-radius:8px;
  padding:0 14px;
  color:var(--text);
  font-size:13px;
  outline:none;
  transition:border-color .3s ease;
}
.footer-newsletter input::placeholder{color:var(--text-weak)}
.footer-newsletter input:focus{border-color:var(--brand)}
@media(max-width:639px){
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;padding:16px 0}
  .footer-brand p{max-width:100%}
}

/* -- Misc -- */
.back-to-top{
  position:fixed;
  bottom:28px;right:28px;
  width:44px;height:44px;
  border-radius:50%;
  background:rgba(17,26,48,0.9);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-cyan);
  box-shadow:var(--shadow);
  cursor:pointer;
  z-index:99;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:all .3s ease;
  backdrop-filter:blur(8px);
}
.back-to-top.show{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.back-to-top:hover{
  border-color:var(--brand);
  background:rgba(45,127,249,0.2);
}
@media(max-width:639px){
  .back-to-top{bottom:16px;right:16px;width:38px;height:38px}
}

/* Focus accessible */
a:focus-visible,
input:focus-visible,
select:focus-visible,
button:focus-visible{
  outline:2px solid var(--brand-cyan);
  outline-offset:3px;
}
::selection{background:rgba(45,127,249,0.3);color:var(--text)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg-main)}
::-webkit-scrollbar-thumb{background:var(--bg-card);border-radius:5px;border:2px solid var(--bg-main)}
::-webkit-scrollbar-thumb:hover{background:#1e2a4a}

/* roulang page: article */
/* ===== CSS 设计变量 ===== */
:root {
  --bg-primary: #0A0F1F;
  --bg-secondary: #111A30;
  --bg-tertiary: #16203A;
  --bg-card: rgba(255,255,255,0.06);
  --bg-card-hover: rgba(255,255,255,0.10);
  --primary: #2D7FF9;
  --accent: #22D3EE;
  --highlight: #A3E635;
  --text-main: #F1F5F9;
  --text-sub: #9AA8BC;
  --text-weak: #64748B;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.20);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow: 0 12px 40px rgba(0,0,0,0.30);
  --shadow-hover: 0 18px 52px rgba(0,0,0,0.45);
  --glow-primary: 0 0 24px rgba(45,127,249,0.55);
  --glow-primary-hover: 0 0 34px rgba(45,127,249,0.75);
  --gradient-primary: linear-gradient(135deg, #2D7FF9, #22D3EE);
  --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s ease;
  --header-h: 72px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(45,127,249,0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(34,211,238,0.06) 0%, transparent 45%),
    linear-gradient(180deg, #0A0F1F 0%, #0D1424 50%, #0A0F1F 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: #6BADFF; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 14px; color: var(--text-main); outline: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  background: var(--gradient-primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: none;
  box-shadow: var(--glow-primary);
  transition: var(--transition);
  gap: 8px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-primary-hover);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: 0 0 14px rgba(45,127,249,0.4);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.30);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  gap: 8px;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(45,127,249,0.08);
}
.btn-secondary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-block { display: flex; width: 100%; }

/* ===== Header / 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(10,15,31,0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.site-header.scrolled {
  background: rgba(7,11,24,0.94);
  border-bottom-color: rgba(45,127,249,0.18);
  box-shadow: 0 10px 40px rgba(0,0,0,0.35);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-ico {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-primary);
  border-radius: 9px;
  font-size: 15px;
  color: #fff;
  box-shadow: 0 0 18px rgba(45,127,249,0.45);
}
.logo-text {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1;
}
.logo-tag {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 2px 7px;
  border-radius: 20px;
  letter-spacing: 1px;
  line-height: 1.4;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(241,245,249,0.75);
  position: relative;
  padding: 6px 2px;
  line-height: 1.4;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px rgba(45,127,249,0.6);
}
.nav-link:hover {
  color: #fff;
}
.nav-link:hover::after { width: 100%; }
.nav-link.active {
  color: var(--accent);
}
.nav-link.active::after { width: 100%; }
.nav-cta .btn-primary { box-shadow: 0 0 16px rgba(45,127,249,0.4); }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 0 10px;
  background: transparent;
  border-radius: 8px;
  transition: background 0.3s;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: #fff;
  border-radius: 3px;
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 文章 Hero 区 ===== */
.article-hero {
  padding: 156px 0 44px;
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,15,31,0.70) 0%, rgba(10,15,31,0.92) 100%),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  z-index: 0;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(180deg, transparent 0%, rgba(10,15,31,0.85) 100%);
  z-index: 0;
}
.article-hero .container {
  position: relative;
  z-index: 1;
  max-width: 860px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 28px;
}
.breadcrumb a {
  color: rgba(241,245,249,0.65);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-weak); }
.breadcrumb .current {
  color: var(--accent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}
.article-h1 {
  font-family: var(--font-head);
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  text-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.article-meta i { color: var(--primary); font-size: 13px; }
.article-meta .meta-badge {
  display: inline-block;
  background: rgba(45,127,249,0.15);
  border: 1px solid rgba(45,127,249,0.35);
  color: var(--accent);
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 13px;
}

/* ===== 正文阅读区 ===== */
.article-main {
  padding: 56px 0 80px;
  position: relative;
}
.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 56px 60px 48px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.article-body {
  font-size: 17px;
  line-height: 1.82;
  color: #D5DCE8;
}
.article-body > * + * { margin-top: 22px; }
.article-body h2 {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-top: 48px;
  margin-bottom: 18px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  border-radius: 0 4px 4px 0;
  letter-spacing: -0.3px;
}
.article-body h3 {
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 600;
  color: #EAF0FA;
  margin-top: 38px;
  margin-bottom: 14px;
}
.article-body p { color: #C6CFDC; }
.article-body a {
  color: var(--accent);
  border-bottom: 1px dashed rgba(34,211,238,0.4);
  padding-bottom: 1px;
}
.article-body a:hover { color: #6FE8FF; border-bottom-color: #6FE8FF; }
.article-body strong { color: #F1F5F9; font-weight: 600; }
.article-body ul,
.article-body ol {
  padding-left: 0;
  display: grid;
  gap: 10px;
}
.article-body ul li {
  position: relative;
  padding-left: 24px;
  color: #C6CFDC;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 2px; top: 11px;
  width: 6px; height: 6px;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(45,127,249,0.6);
}
.article-body ol { counter-reset: article-ol; }
.article-body ol li {
  counter-increment: article-ol;
  position: relative;
  padding-left: 34px;
  color: #C6CFDC;
}
.article-body ol li::before {
  content: counter(article-ol, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(45,127,249,0.12);
  border: 1px solid rgba(45,127,249,0.3);
  border-radius: 50%;
}
.article-body img {
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
  margin: 28px 0;
}
.article-body blockquote {
  position: relative;
  background: rgba(45,127,249,0.08);
  border-left: 3px solid var(--primary);
  padding: 22px 26px;
  border-radius: 0 14px 14px 0;
  margin: 32px 0;
  color: #B7C4D8;
  font-style: normal;
  box-shadow: inset 0 0 18px rgba(45,127,249,0.06);
}
.article-body blockquote p { margin: 0; color: #B7C4D8; }
.article-body code {
  background: rgba(255,255,255,0.08);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-body pre {
  background: rgba(7,11,24,0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 24px;
  overflow-x: auto;
  margin: 32px 0;
}
.article-body pre code {
  background: none;
  padding: 0;
  color: #AFC6E0;
  font-size: 14px;
  line-height: 1.7;
  display: block;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  overflow: hidden;
}
.article-body table th {
  background: rgba(45,127,249,0.15);
  padding: 13px 18px;
  text-align: left;
  color: #DCE8FF;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.article-body table td {
  padding: 12px 18px;
  border-top: 1px solid rgba(255,255,255,0.06);
  color: #B5C2D6;
}
.article-body table tr:hover td {
  background: rgba(255,255,255,0.03);
}
.article-body hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 40px 0;
}

/* ===== 作者区 ===== */
.article-author-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.article-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.author-avatar {
  width: 50px; height: 50px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(45,127,249,0.25), rgba(34,211,238,0.18));
  border: 1px solid rgba(45,127,249,0.35);
  border-radius: 14px;
  font-size: 18px;
  color: var(--accent);
}
.author-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}
.author-desc {
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 2px;
}
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
}
.article-share a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-sub);
  font-size: 14px;
  transition: var(--transition);
}
.article-share a:hover {
  color: var(--accent);
  border-color: rgba(34,211,238,0.4);
  background: rgba(34,211,238,0.1);
  transform: translateY(-2px);
}

/* ===== 返回入口 ===== */
.back-wrap {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 80px 30px;
}
.not-found i {
  font-size: 50px;
  color: var(--text-weak);
  margin-bottom: 24px;
  background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  width: 110px; height: 110px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
}
.not-found h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-sub);
  margin-bottom: 32px;
  font-size: 15px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 70px 0 80px;
  background: linear-gradient(180deg, transparent, rgba(17,26,48,0.5));
  border-top: 1px solid rgba(255,255,255,0.04);
}
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head h2 {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  margin-bottom: 10px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 15px;
}
.related-card {
  display: block;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.related-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(45,127,249,0.35);
  transform: translateY(-6px);
  box-shadow: 0 16px 42px rgba(0,0,0,0.4);
}
.related-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.related-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-thumb img {
  transform: scale(1.05);
}
.related-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10,15,31,0.55));
}
.badge {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 1;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
  box-shadow: 0 4px 14px rgba(45,127,249,0.35);
  letter-spacing: 0.5px;
  border: none;
}
.related-info {
  padding: 18px 20px 20px;
}
.related-info h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  color: #EAF0FA;
  line-height: 1.5;
  margin-bottom: 10px;
  transition: color 0.3s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .related-info h3 { color: var(--accent); }
.related-date {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text-weak);
}
.related-date i { color: var(--primary); }

/* ===== 页脚 ===== */
.site-footer {
  background: #080C18;
  border-top: 1px solid rgba(45,127,249,0.22);
  padding: 56px 0 0;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(45,127,249,0.6), rgba(34,211,238,0.4), transparent);
}
.site-footer .grid-container {
  max-width: 1200px;
}
.footer-col {
  margin-bottom: 32px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.footer-brand .logo-ico {
  width: 30px; height: 30px;
  font-size: 14px;
  border-radius: 8px;
}
.footer-brand .logo-text {
  font-size: 20px;
}
.footer-brand .logo-tag {
  font-size: 11px;
  padding: 1px 6px;
}
.site-footer p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 0;
}
.site-footer h4 {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: #E8EEF8;
  margin-bottom: 16px;
  letter-spacing: 0.2px;
}
.site-footer ul li {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 10px;
  line-height: 1.6;
}
.site-footer ul li a {
  color: var(--text-sub);
}
.site-footer ul li a:hover {
  color: var(--accent);
}
.site-footer ul li i {
  width: 20px;
  color: var(--primary);
  margin-right: 6px;
  font-size: 13px;
}
.footer-newsletter {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.footer-newsletter input {
  flex: 1;
  min-width: 0;
  height: 40px;
  padding: 0 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-main);
  transition: var(--transition);
}
.footer-newsletter input::placeholder { color: var(--text-weak); }
.footer-newsletter input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(45,127,249,0.15);
  background: rgba(255,255,255,0.07);
}
.footer-newsletter .btn-primary { height: 40px; padding: 0 18px; flex-shrink: 0; border-radius: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  margin-top: 16px;
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.footer-bottom span {
  font-size: 13px;
  color: var(--text-weak);
}

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

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .main-nav { gap: 20px; }
  .header-inner { padding: 0 24px; }
  .article-wrap { padding: 44px 40px; }
}
@media screen and (max-width: 768px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10,15,31,0.94);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(45,127,249,0.2);
    padding: 16px 24px 24px;
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: var(--transition);
    box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .main-nav .nav-link {
    padding: 14px 8px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .main-nav .nav-link::after { display: none; }
  .main-nav .nav-link.active {
    color: var(--accent);
    padding-left: 14px;
    border-left: 3px solid var(--accent);
  }
  .main-nav .nav-cta {
    margin-top: 16px;
  }
  .main-nav .nav-cta .btn-primary { width: 100%; }
  .article-hero { padding: 130px 0 32px; }
  .article-h1 { font-size: 28px; }
  .article-wrap { padding: 32px 22px; }
  .article-meta { gap: 14px; font-size: 13px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 22px; }
  .article-body h3 { font-size: 19px; }
  .related-info { padding: 16px; }
}
@media screen and (max-width: 520px) {
  .header-inner { padding: 0 16px; }
  .logo-text { font-size: 19px; }
  .logo-tag { display: none; }
  .article-h1 { font-size: 24px; }
  .article-wrap { padding: 26px 18px; }
  .article-body { font-size: 15px; line-height: 1.75; }
  .article-body h2 { font-size: 20px; margin-top: 38px; }
  .article-body h3 { font-size: 18px; }
  .article-body blockquote { padding: 16px 18px; }
  .article-author-box { flex-direction: column; align-items: flex-start; }
  .article-share { width: 100%; justify-content: flex-end; }
  .section-head h2 { font-size: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 玻璃拟态兼容 ===== */
@supports not ((backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px))) {
  .site-header, .main-nav, .article-wrap, .related-card {
    background: rgba(17,26,48,0.95);
  }
}

/* roulang page: category1 */
:root {
      --bg-primary: #0A0F1F;
      --bg-secondary: #111A30;
      --bg-tertiary: #16203A;
      --card-bg: rgba(255, 255, 255, 0.06);
      --card-bg-hover: rgba(255, 255, 255, 0.10);
      --blue: #2D7FF9;
      --cyan: #22D3EE;
      --green: #A3E635;
      --text-main: #F1F5F9;
      --text-sub: #9AA8BC;
      --text-weak: #64748B;
      --border: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(255, 255, 255, 0.18);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 10px;
      --shadow: 0 12px 40px rgba(0, 0, 0, 0.30);
      --shadow-hover: 0 18px 50px rgba(0, 0, 0, 0.45);
      --gradient-blue: linear-gradient(135deg, #2D7FF9, #22D3EE);
      --transition: all .3s ease;
    }

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

    html { scroll-behavior: smooth; }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--bg-primary);
      background-image: radial-gradient(ellipse at top right, rgba(45, 127, 249, 0.08), transparent 50%), radial-gradient(ellipse at bottom left, rgba(34, 211, 238, 0.04), transparent 50%);
      -webkit-font-smoothing: antialiased;
      min-height: 100vh;
    }

    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--blue); text-decoration: none; transition: color .25s ease; }
    a:hover { color: #5B9BFF; }
    a:focus-visible, button:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }
    .grid-container { max-width: 1200px; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 15, 31, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      transition: background .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled { background: rgba(8, 12, 24, 0.95); box-shadow: 0 8px 30px rgba(0, 0, 0, 0.30); }
    .header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

    .logo { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
    .logo-ico {
      width: 38px; height: 38px; border-radius: 10px;
      background: var(--gradient-blue);
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 16px;
      box-shadow: 0 0 16px rgba(45, 127, 249, 0.5);
    }
    .logo-text { font-size: 22px; font-weight: 800; color: var(--text-main); letter-spacing: -0.5px; }
    .logo-tag {
      font-size: 11px; font-weight: 600; color: rgba(241, 245, 249, 0.6);
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 2px 8px; border-radius: 20px; letter-spacing: 1px;
    }

    .main-nav { display: flex; align-items: center; gap: 28px; }
    .nav-link {
      font-size: 15px; color: var(--text-sub); font-weight: 500;
      position: relative; padding: 8px 2px; transition: color .25s;
    }
    .nav-link:hover { color: var(--text-main); }
    .nav-link.active { color: var(--blue); }
    .nav-link.active::after {
      content: ''; position: absolute; bottom: 0; left: 0;
      width: 100%; height: 2px;
      background: var(--gradient-blue);
      border-radius: 2px;
      box-shadow: 0 0 8px rgba(45, 127, 249, 0.6);
    }
    .nav-cta { margin-left: 4px; }

    .nav-toggle {
      display: none; width: 44px; height: 44px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border);
      border-radius: 10px;
      flex-direction: column; align-items: center; justify-content: center;
      gap: 5px; cursor: pointer; position: relative; z-index: 1001;
      transition: background .25s;
    }
    .nav-toggle:hover { background: rgba(255, 255, 255, 0.12); }
    .nav-toggle span {
      display: block; width: 18px; height: 2px;
      background: var(--text-main); border-radius: 2px;
      transition: all .3s ease;
    }
    .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .btn-primary {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      background: var(--gradient-blue);
      color: #fff; font-weight: 600; font-size: 15px;
      padding: 14px 28px; border-radius: var(--radius-sm);
      border: none; cursor: pointer;
      box-shadow: 0 0 20px rgba(45, 127, 249, 0.55);
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 0 32px rgba(45, 127, 249, 0.75); }
    .btn-primary:active { transform: translateY(1px) scale(0.98); box-shadow: 0 0 12px rgba(45, 127, 249, 0.4); }
    .btn-primary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

    .btn-secondary {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-main); font-weight: 600; font-size: 15px;
      padding: 14px 28px; border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.30); cursor: pointer;
      backdrop-filter: blur(8px);
      transition: var(--transition);
      text-align: center;
    }
    .btn-secondary:hover { border-color: var(--blue); color: var(--cyan); background: rgba(45, 127, 249, 0.10); }
    .btn-secondary:active { transform: translateY(1px) scale(0.98); }

    .btn-sm { padding: 9px 18px; font-size: 14px; box-shadow: 0 0 12px rgba(45, 127, 249, 0.35); }

    .page-hero {
      position: relative;
      padding: 110px 0 80px;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    }
    .page-hero::before {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(to bottom, rgba(10, 15, 31, 0.75), rgba(10, 15, 31, 0.92));
    }
    .hero-content { position: relative; z-index: 2; max-width: 720px; }
    .page-breadcrumb {
      font-size: 14px; color: var(--text-sub);
      margin-bottom: 16px;
    }
    .page-breadcrumb a { color: var(--text-sub); }
    .page-breadcrumb a:hover { color: var(--cyan); }
    .page-breadcrumb .sep { margin: 0 8px; color: var(--text-weak); }
    .page-hero h1 {
      font-size: 44px; font-weight: 800;
      letter-spacing: -0.5px; margin-bottom: 16px;
      color: var(--text-main);
    }
    .hero-desc {
      font-size: 17px; line-height: 1.8;
      color: var(--text-sub); max-width: 620px;
    }
    .hero-meta { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
    .hero-meta .tag {
      background: rgba(45, 127, 249, 0.15);
      border: 1px solid rgba(45, 127, 249, 0.30);
      color: #8AB8FF;
      padding: 5px 14px; border-radius: 20px;
      font-size: 13px;
    }

    .section-spotlight, .section-subtopics, .section-faq { padding: 96px 0; }
    .section-stats { padding: 80px 0; }
    .section-cta { padding: 100px 0; }

    .spotlight-row { margin-bottom: 80px; }
    .spotlight-row:last-child { margin-bottom: 0; }

    .spotlight-img {
      border-radius: var(--radius-lg);
      overflow: hidden; position: relative;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
    }
    .spotlight-img img {
      width: 100%; height: 380px; object-fit: cover;
      transition: transform .6s ease;
    }
    .spotlight-img:hover img { transform: scale(1.03); }
    .spotlight-img::after {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(10, 15, 31, 0.15), transparent 50%);
    }

    .spotlight-content { padding: 16px 8px; }
    .section-tag {
      display: inline-block;
      background: rgba(34, 211, 238, 0.12);
      border: 1px solid rgba(34, 211, 238, 0.25);
      color: var(--cyan);
      padding: 4px 12px; border-radius: 20px;
      font-size: 13px; font-weight: 600;
      margin-bottom: 16px; letter-spacing: 0.5px;
    }
    .spotlight-content h2 {
      font-size: 30px; font-weight: 700;
      margin-bottom: 16px; letter-spacing: -0.3px;
      color: var(--text-main);
    }
    .spotlight-content p {
      font-size: 16px; line-height: 1.8;
      color: var(--text-sub); margin-bottom: 20px;
    }
    .check-list li {
      display: flex; align-items: flex-start; gap: 10px;
      margin-bottom: 10px;
      color: var(--text-sub); font-size: 15px;
    }
    .check-list li::before {
      content: "\f00c";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      color: var(--cyan); font-size: 13px;
      margin-top: 4px; flex-shrink: 0;
    }

    .section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
    .section-head .section-tag { margin-bottom: 12px; }
    .section-head h2 {
      font-size: 30px; font-weight: 700;
      margin-bottom: 12px; color: var(--text-main);
      letter-spacing: -0.3px;
    }
    .section-head p { font-size: 16px; color: var(--text-sub); }

    .sub-topic-card { margin-bottom: 24px; }
    .subtopic-inner {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow);
      height: 100%;
      display: flex; flex-direction: column;
      transition: all .35s ease;
    }
    .subtopic-inner:hover {
      background: var(--card-bg-hover);
      border-color: var(--border-hover);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .subtopic-img { overflow: hidden; }
    .card-1 .subtopic-img img { height: 280px; }
    .card-2 .subtopic-img img { height: 210px; }
    .card-3 .subtopic-img img { height: 250px; }
    .subtopic-img img { width: 100%; object-fit: cover; transition: transform .45s ease; }
    .subtopic-inner:hover .subtopic-img img { transform: scale(1.04); }
    .subtopic-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
    .subtopic-body h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; color: var(--text-main); }
    .subtopic-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; }
    .subtopic-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
    .subtopic-tags span {
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid var(--border);
      padding: 4px 10px; border-radius: 6px;
      font-size: 12px; color: var(--text-sub);
    }

    .section-stats {
      background: linear-gradient(135deg, rgba(45, 127, 249, 0.12), rgba(34, 211, 238, 0.05));
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .stat-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 36px 24px; text-align: center;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      height: 100%;
      transition: all .3s ease;
    }
    .stat-card:hover {
      border-color: rgba(45, 127, 249, 0.40);
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }
    .stat-num { font-size: 42px; font-weight: 800; color: var(--text-main); display: block; line-height: 1.2; letter-spacing: -1px; }
    .stat-num .stat-plus { color: var(--cyan); }
    .stat-label { font-size: 14px; color: var(--text-sub); margin-top: 8px; display: block; }

    .faq-list { max-width: 820px; margin: 0 auto; }
    .faq-item {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: all .3s ease;
    }
    .faq-item.active {
      border-color: rgba(45, 127, 249, 0.35);
      background: rgba(255, 255, 255, 0.08);
    }
    .faq-question {
      width: 100%;
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      padding: 20px 24px;
      background: none; border: none;
      color: var(--text-main); font-size: 16px; font-weight: 600;
      cursor: pointer; text-align: left;
      transition: color .2s;
    }
    .faq-question:hover { color: var(--cyan); }
    .faq-question i { color: var(--text-sub); transition: transform .3s ease; font-size: 14px; flex-shrink: 0; }
    .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--cyan); }
    .faq-item.active .faq-question { color: var(--cyan); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
    .faq-answer p { padding: 0 24px 20px; font-size: 15px; color: var(--text-sub); line-height: 1.8; }
    .faq-item.active .faq-answer { max-height: 300px; }

    .section-cta {
      position: relative;
      text-align: center;
      background: url('/assets/images/backpic/back-3.webp') center/cover;
      background-attachment: fixed;
    }
    .section-cta::before {
      content: '';
      position: absolute; inset: 0;
      background: rgba(10, 15, 31, 0.84);
    }
    .section-cta .grid-container { position: relative; z-index: 2; }
    .section-cta h2 {
      font-size: 36px; font-weight: 800;
      color: #fff; margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-cta p {
      font-size: 17px; color: var(--text-sub);
      max-width: 520px; margin: 0 auto 32px;
      line-height: 1.8;
    }

    .site-footer {
      background: #080C18;
      border-top: 1px solid rgba(45, 127, 249, 0.20);
      position: relative;
      padding: 64px 0 0;
    }
    .site-footer::before {
      content: '';
      position: absolute; top: 0; left: 0;
      width: 100%; height: 1px;
      background: linear-gradient(90deg, transparent, rgba(45, 127, 249, 0.60), rgba(34, 211, 238, 0.40), transparent);
    }
    .footer-col h4 {
      font-size: 15px; font-weight: 600;
      color: var(--text-main); margin-bottom: 16px;
    }
    .footer-col ul li { margin-bottom: 10px; font-size: 14px; color: var(--text-sub); }
    .footer-col ul a { color: var(--text-sub); transition: color .25s; }
    .footer-col ul a:hover { color: var(--cyan); }
    .footer-brand { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
    .footer-brand .logo-text { font-size: 20px; }
    .footer-brand .logo-tag { font-size: 11px; }
    .footer-col p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
    .footer-newsletter { display: flex; gap: 8px; }
    .footer-newsletter input {
      flex: 1; height: 42px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0 14px;
      color: var(--text-main); font-size: 14px;
      outline: none;
      transition: border-color .25s, box-shadow .25s;
    }
    .footer-newsletter input:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(45, 127, 249, 0.20);
    }
    .footer-newsletter input::placeholder { color: var(--text-weak); }
    .footer-newsletter .btn-primary { padding: 0 18px; height: 42px; font-size: 14px; }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 24px 0;
      margin-top: 48px;
      display: flex; justify-content: space-between; align-items: center;
      font-size: 13px; color: var(--text-weak);
      flex-wrap: wrap; gap: 8px;
    }

    @media screen and (max-width: 1024px) {
      .main-nav { gap: 20px; }
      .spotlight-img img { height: 320px; }
      .card-1 .subtopic-img img, .card-2 .subtopic-img img, .card-3 .subtopic-img img { height: 220px; }
    }

    @media screen and (max-width: 768px) {
      .section-spotlight, .section-subtopics, .section-faq { padding: 64px 0; }
      .section-cta { padding: 72px 0; }
      .page-hero { padding: 80px 0 56px; }
      .page-hero h1 { font-size: 32px; }
      .hero-desc { font-size: 15px; }
      .spotlight-img img { height: 240px; }
      .spotlight-content h2 { font-size: 26px; }
      .spotlight-content { padding: 24px 0 0; }
      .spotlight-reverse .spotlight-content { padding: 0 0 24px; }

      .nav-toggle { display: flex; }
      .main-nav {
        position: fixed; top: 72px; left: 0; width: 100%;
        background: rgba(10, 15, 31, 0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column; align-items: flex-start; gap: 0;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-130%);
        opacity: 0; visibility: hidden;
        transition: all .35s ease;
        z-index: 999;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.40);
      }
      .main-nav.nav-open { transform: translateY(0); opacity: 1; visibility: visible; }
      .main-nav .nav-link {
        display: block; width: 100%;
        padding: 14px 8px; font-size: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      }
      .main-nav .nav-link.active::after { display: none; }
      .main-nav .nav-link.active {
        color: var(--cyan);
        background: rgba(45, 127, 249, 0.08);
        border-radius: 8px;
        padding-left: 16px;
      }
      .nav-cta { margin: 16px 0 0; width: 100%; }
      .nav-cta .btn-primary { width: 100%; }

      .stat-num { font-size: 32px; }
      .stat-card { padding: 28px 16px; }
      .section-head { margin-bottom: 40px; }
      .section-head h2 { font-size: 26px; }

      .faq-list { padding: 0 8px; }
      .faq-question { padding: 18px; font-size: 15px; }
      .faq-answer p { padding: 0 18px 18px; }

      .footer-bottom { flex-direction: column; text-align: center; }
      .footer-newsletter { flex-direction: column; }
      .footer-newsletter .btn-primary { width: 100%; }
    }

    @media screen and (max-width: 520px) {
      .header-inner { height: 64px; }
      .main-nav { top: 64px; }
      .page-hero h1 { font-size: 28px; }
      .hero-desc { font-size: 14px; }
      .section-head h2 { font-size: 24px; }
      .spotlight-img img { height: 200px; }
      .subtopic-body { padding: 20px; }
      .stat-num { font-size: 26px; }
      .section-cta h2 { font-size: 26px; }
      .btn-primary, .btn-secondary { width: 100%; }
      .logo-text { font-size: 20px; }
      .logo-ico { width: 34px; height: 34px; font-size: 14px; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { animation: none !important; transition: none !important; }
      html { scroll-behavior: auto; }
    }

/* roulang page: category2 */
:root{
  --bg-primary:#0A0F1F;
  --bg-secondary:#111A30;
  --bg-card:rgba(255,255,255,0.06);
  --bg-card-hover:rgba(255,255,255,0.10);
  --color-primary:#2D7FF9;
  --color-accent:#22D3EE;
  --color-highlight:#A3E635;
  --color-text:#F1F5F9;
  --color-text-sub:#9AA8BC;
  --color-text-weak:#64748B;
  --border-color:rgba(255,255,255,0.08);
  --border-hover:rgba(255,255,255,0.18);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 40px rgba(0,0,0,0.30);
  --transition:all 0.3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  background:linear-gradient(160deg,#0A0F1F 0%,#14213D 100%);
  color:var(--color-text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:var(--color-primary);transition:var(--transition);outline:none}
a:hover{color:var(--color-accent)}
a:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:4px}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit;outline:none}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
.section-head{text-align:center;margin-bottom:56px}
.section-head .sec-label{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;color:var(--color-accent);text-transform:uppercase;margin-bottom:8px;background:rgba(34,211,238,0.10);padding:4px 16px;border-radius:100px;border:1px solid rgba(34,211,238,0.20)}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-0.5px;line-height:1.3;margin-bottom:12px;color:var(--color-text)}
.section-head .sec-line{width:48px;height:3px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));border-radius:100px;margin:0 auto 16px}
.section-head p{font-size:16px;color:var(--color-text-sub);max-width:680px;margin:0 auto}
@media(max-width:640px){
  .section{padding:56px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:24px}
}
/* ===== Navigation ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,15,31,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-color);
  height:72px;
  transition:var(--transition);
}
.site-header.scrolled{
  background:rgba(8,12,24,0.95);
  border-bottom:1px solid rgba(255,255,255,0.14);
  box-shadow:0 4px 30px rgba(0,0,0,0.40);
}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;
  height:100%;
}
.logo{
  display:flex;align-items:center;gap:8px;flex-shrink:0;
}
.logo-ico{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:14px;box-shadow:0 0 16px rgba(45,127,249,0.40);
}
.logo-text{
  font-size:22px;font-weight:800;color:#fff;letter-spacing:-0.5px;
}
.logo-text .logo-bolt{
  color:var(--color-accent);
}
.logo-tag{
  font-size:12px;font-weight:600;color:var(--color-text-sub);
  background:rgba(255,255,255,0.08);
  padding:2px 8px;border-radius:100px;
  border:1px solid var(--border-color);
  letter-spacing:1px;
}
.main-nav{
  display:flex;align-items:center;gap:32px;
}
.main-nav .nav-link{
  font-size:15px;font-weight:500;color:var(--color-text-sub);
  padding:10px 2px;position:relative;transition:var(--transition);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;
  height:2px;border-radius:100px;
  background:linear-gradient(90deg,var(--color-primary),var(--color-accent));
  transform:scaleX(0);transform-origin:left;transition:transform 0.3s ease;
}
.main-nav .nav-link:hover{color:var(--color-text)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--color-accent);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.nav-cta .btn-primary{padding:8px 20px;font-size:14px;border-radius:8px}
.menu-toggle{
  display:none;background:none;border:none;color:#fff;font-size:24px;
  cursor:pointer;padding:8px;line-height:1;
}
@media(max-width:768px){
  .menu-toggle{display:block}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:flex-start;
    background:rgba(10,15,31,0.96);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    padding:20px 24px 28px;
    gap:0;
    border-bottom:1px solid var(--border-color);
    transform:translateY(-120%);
    opacity:0;
    pointer-events:none;
    transition:var(--transition);
    box-shadow:0 20px 40px rgba(0,0,0,0.40);
    max-height:calc(100vh - 72px);
    overflow-y:auto;
  }
  .main-nav.nav-open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .main-nav .nav-link{
    display:block;width:100%;padding:14px 0;font-size:16px;
    color:var(--color-text);
  }
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.active{color:var(--color-accent)}
  .nav-cta{width:100%;margin-top:16px;padding-top:16px;border-top:1px solid var(--border-color)}
  .nav-cta .btn-primary{width:100%;text-align:center;padding:12px}
}
/* ===== Buttons ===== */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
  color:#fff;font-weight:600;font-size:16px;
  padding:14px 32px;border-radius:var(--radius-sm);
  border:none;cursor:pointer;
  box-shadow:0 0 20px rgba(45,127,249,0.45);
  transition:var(--transition);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.1);
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(45,127,249,0.70);
}
.btn-primary:active{
  transform:translateY(1px) scale(0.98);
  box-shadow:0 0 16px rgba(45,127,249,0.50);
}
.btn-primary.btn-sm{padding:10px 22px;font-size:14px}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,0.06);
  color:#E2E8F0;font-weight:500;font-size:16px;
  padding:13px 30px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,0.25);
  cursor:pointer;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:var(--transition);
}
.btn-secondary:hover{
  border-color:var(--color-primary);
  color:var(--color-accent);
  background:rgba(45,127,249,0.10);
  transform:translateY(-2px);
}
.btn-secondary:active{
  transform:translateY(1px);
}
/* ===== Page Hero ===== */
.page-hero{
  position:relative;
  padding:160px 0 100px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  background-attachment:fixed;
}
.page-hero .hero-overlay{
  position:absolute;top:0;left:0;right:0;bottom:0;
  background:linear-gradient(135deg,rgba(10,15,31,0.92) 30%,rgba(20,33,61,0.75) 100%);
}
.page-hero .container{
  position:relative;z-index:2;
}
.page-hero .hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--color-accent);
  background:rgba(34,211,238,0.12);
  border:1px solid rgba(34,211,238,0.25);
  padding:6px 16px;border-radius:100px;
  margin-bottom:20px;
  letter-spacing:1px;
}
.page-hero .hero-badge i{font-size:12px}
.page-hero h1{
  font-size:48px;font-weight:800;letter-spacing:-1px;
  line-height:1.2;margin-bottom:18px;
  background:linear-gradient(135deg,#fff 40%,#A8C8FF 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.page-hero .hero-sub{
  font-size:18px;color:var(--color-text-sub);
  max-width:620px;line-height:1.7;margin-bottom:36px;
}
.page-hero .hero-btns{
  display:flex;gap:16px;flex-wrap:wrap;
}
.page-hero .hero-scroll{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
  color:var(--color-text-sub);font-size:13px;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  animation:bounce 2s infinite;
}
@keyframes bounce{
  0%,20%,50%,80%,100%{transform:translateX(-50%) translateY(0)}
  40%{transform:translateX(-50%) translateY(-8px)}
  60%{transform:translateX(-50%) translateY(-4px)}
}
@media(max-width:640px){
  .page-hero{padding:120px 0 70px;background-attachment:scroll}
  .page-hero h1{font-size:30px}
  .page-hero .hero-sub{font-size:15px}
  .page-hero .hero-btns{flex-direction:column;width:100%}
  .page-hero .hero-btns .btn-primary,
  .page-hero .hero-btns .btn-secondary{width:100%}
}
/* ===== Steps Section ===== */
.steps-section{
  position:relative;
  background:rgba(17,26,48,0.50);
}
.steps-section::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:1px;height:100%;
  background:linear-gradient(180deg,transparent,var(--color-primary),transparent);
  opacity:0.15;
}
.step-grid{
  margin-top:16px;
}
.step-card{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:18px;
  padding:34px 26px;
  position:relative;
  text-align:center;
  height:100%;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 12px 40px rgba(0,0,0,0.25);
  transition:var(--transition);
  overflow:hidden;
}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,transparent,var(--color-accent),transparent);
  opacity:0;
  transition:var(--transition);
}
.step-card:hover{
  background:rgba(255,255,255,0.10);
  border-color:rgba(255,255,255,0.18);
  transform:translateY(-6px);
  box-shadow:0 20px 50px rgba(0,0,0,0.35);
}
.step-card:hover::before{opacity:1}
.step-num{
  font-size:44px;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  margin-bottom:16px;
  opacity:0.7;
}
.step-icon{
  width:60px;height:60px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;color:var(--color-accent);
  background:rgba(34,211,238,0.10);
  border:1px solid rgba(34,211,238,0.15);
  margin:0 auto 18px;
}
.step-card h3{
  font-size:20px;font-weight:700;margin-bottom:10px;
  color:var(--color-text);
}
.step-card p{
  font-size:14px;color:var(--color-text-sub);line-height:1.6;
}
.step-arrow{
  position:absolute;top:50%;right:-18px;transform:translateY(-50%);
  font-size:14px;color:var(--color-accent);
  background:var(--bg-primary);
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(34,211,238,0.3);
  z-index:2;
  box-shadow:0 4px 16px rgba(0,0,0,0.3);
}
@media(max-width:1024px){
  .step-arrow{display:none}
}
@media(max-width:640px){
  .step-card{padding:26px 20px}
  .step-card h3{font-size:18px}
}
/* ===== Prepare Section ===== */
.prepare-section{
  position:relative;
  background:linear-gradient(180deg,rgba(17,26,48,0.40),rgba(10,15,31,0.90));
}
.prepare-card{
  background:rgba(255,255,255,0.06);
  border:1px solid var(--border-color);
  border-radius:20px;
  padding:36px 32px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  height:100%;
  transition:var(--transition);
}
.prepare-card:hover{
  background:rgba(255,255,255,0.09);
  border-color:rgba(255,255,255,0.20);
  transform:translateY(-4px);
  box-shadow:var(--shadow);
}
.prepare-card .card-head{
  display:flex;align-items:center;gap:14px;margin-bottom:24px;
}
.prepare-card .card-ico{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  background:linear-gradient(135deg,rgba(45,127,249,0.15),rgba(34,211,238,0.15));
  border:1px solid rgba(45,127,249,0.2);
}
.prepare-card .card-ico.i-earn{
  background:linear-gradient(135deg,rgba(255,255,255,0.08),rgba(34,211,238,0.10));
  border-color:rgba(34,211,238,0.2);
  color:var(--color-highlight);
}
.prepare-card .card-ico.i-note{
  background:linear-gradient(135deg,rgba(255,255,255,0.08),rgba(45,127,249,0.10));
  border-color:rgba(45,127,249,0.2);
  color:var(--color-accent);
}
.prepare-card h3{font-size:20px;font-weight:700;color:var(--color-text)}
.prepare-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  font-size:15px;color:var(--color-text-sub);
  line-height:1.6;
}
.prepare-list li:last-child{border-bottom:none}
.prepare-list li i{
  color:var(--color-accent);font-size:14px;
  margin-top:5px;flex-shrink:0;
}
.prepare-list li .list-title{
  color:var(--color-text);font-weight:600;
}
@media(max-width:640px){
  .prepare-card{padding:28px 22px}
}
/* ===== Stats Section ===== */
.stats-section{
  position:relative;
  background-image:url('/assets/images/coverpic/cover-5.webp');
  background-size:cover;
  background-position:center;
  background-attachment:fixed;
}
.stats-section .stats-overlay{
  position:absolute;top:0;left:0;right:0;bottom:0;
  background:rgba(10,15,31,0.90);
}
.stats-section .container{
  position:relative;z-index:2;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.stat-item{
  text-align:center;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--border-color);
  border-radius:20px;
  padding:40px 24px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:var(--transition);
}
.stat-item:hover{
  background:rgba(255,255,255,0.10);
  border-color:rgba(45,127,249,0.30);
  transform:translateY(-4px);
}
.stat-num{
  font-size:48px;font-weight:800;line-height:1.1;
  background:linear-gradient(135deg,#fff,var(--color-accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  margin-bottom:8px;
}
.stat-item h4{
  font-size:15px;font-weight:500;color:var(--color-text-sub);
  letter-spacing:1px;
}
@media(max-width:640px){
  .stats-grid{grid-template-columns:1fr;gap:16px}
  .stat-item{padding:28px 18px}
  .stat-num{font-size:36px}
}
/* ===== FAQ ===== */
.faq-section{
  background:rgba(17,26,48,0.40);
}
.faq-accordion{
  max-width:800px;margin:0 auto;
}
.faq-accordion .accordion-item{
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border-color);
  border-radius:16px;
  margin-bottom:16px;
  transition:var(--transition);
  overflow:hidden;
}
.faq-accordion .accordion-item:hover{
  border-color:rgba(255,255,255,0.16);
  background:rgba(255,255,255,0.08);
}
.faq-accordion .accordion-item.is-active{
  border-color:rgba(45,127,249,0.30);
  box-shadow:0 8px 30px rgba(0,0,0,0.30);
}
.faq-accordion .accordion-title{
  display:flex;align-items:center;gap:14px;
  padding:22px 24px !important;
  font-size:17px !important;font-weight:600 !important;
  color:var(--color-text) !important;
  line-height:1.5;
  position:relative;
}
.faq-accordion .accordion-title .faq-ico{
  width:36px;height:36px;flex-shrink:0;
  border-radius:10px;
  background:rgba(45,127,249,0.12);
  border:1px solid rgba(45,127,249,0.20);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--color-accent);
}
.faq-accordion .accordion-title::before,
.faq-accordion .accordion-title::after{
  content:"";position:absolute;right:24px;top:50%;
  width:12px;height:2px;background:var(--color-text-sub);
  transition:var(--transition);
}
.faq-accordion .accordion-title::after{
  transform:rotate(90deg);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  background:var(--color-accent);
  transform:rotate(180deg);
}
.faq-accordion .accordion-item.is-active .accordion-title::after{
  background:var(--color-accent);
  transform:rotate(180deg);
  opacity:0;
}
.faq-accordion .accordion-content{
  padding:0 24px 22px 74px;
  font-size:15px;color:var(--color-text-sub);line-height:1.7;
}
@media(max-width:640px){
  .faq-accordion .accordion-title{padding:18px 16px !important;font-size:15px !important}
  .faq-accordion .accordion-content{padding:0 16px 18px 60px}
}
/* ===== CTA Section ===== */
.cta-section{
  position:relative;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.cta-section .cta-overlay{
  position:absolute;top:0;left:0;right:0;bottom:0;
  background:linear-gradient(135deg,rgba(10,15,31,0.94) 0%,rgba(20,33,61,0.85) 100%);
}
.cta-section .container{
  position:relative;z-index:2;
  text-align:center;
}
.cta-section .cta-inner{
  max-width:680px;margin:0 auto;
}
.cta-section h2{
  font-size:36px;font-weight:800;letter-spacing:-0.5px;
  margin-bottom:14px;
}
.cta-section p{
  font-size:17px;color:var(--color-text-sub);
  margin-bottom:32px;line-height:1.7;
}
.cta-section .btn-primary{
  font-size:17px;padding:16px 44px;
}
.cta-note{
  margin-top:16px;
  font-size:13px;color:var(--color-text-weak);
}
@media(max-width:640px){
  .cta-section h2{font-size:26px}
  .cta-section .btn-primary{width:100%}
}
/* ===== Footer ===== */
.site-footer{
  background:#080C18;
  border-top:2px solid rgba(45,127,249,0.25);
  padding-top:60px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-2px;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--color-primary),var(--color-accent),transparent);
}
.footer-brand{
  display:flex;align-items:center;gap:10px;margin-bottom:16px;
}
.footer-brand .logo-ico{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;
}
.footer-brand .logo-text{
  font-size:22px;font-weight:800;color:#fff;
}
.footer-brand .logo-tag{
  font-size:12px;font-weight:600;color:var(--color-text-sub);
  background:rgba(255,255,255,0.06);
  padding:2px 8px;border-radius:100px;
  border:1px solid rgba(255,255,255,0.10);
}
.site-footer p{
  font-size:14px;color:var(--color-text-sub);line-height:1.7;
}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;
  position:relative;padding-bottom:10px;
}
.footer-col h4::after{
  content:"";position:absolute;left:0;bottom:0;
  width:24px;height:2px;background:var(--color-accent);
  border-radius:100px;
}
.footer-col ul li{
  margin-bottom:10px;
  font-size:14px;color:var(--color-text-sub);
  line-height:1.6;
}
.footer-col ul li a{
  color:var(--color-text-sub);
  transition:var(--transition);
}
.footer-col ul li a:hover{
  color:var(--color-accent);padding-left:4px;
}
.footer-col ul li i{
  margin-right:8px;color:var(--color-accent);width:16px;
  text-align:center;
}
.footer-newsletter{
  display:flex;gap:8px;margin-top:8px;
}
.footer-newsletter input{
  flex:1;height:40px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:8px;
  padding:0 12px;
  color:var(--color-text);
  font-size:14px;
  transition:var(--transition);
}
.footer-newsletter input:focus{
  border-color:var(--color-primary);
  box-shadow:0 0 0 3px rgba(45,127,249,0.15);
}
.footer-newsletter input::placeholder{
  color:var(--color-text-weak);
}
.footer-newsletter .btn-primary{
  height:40px;padding:0 16px;font-size:13px;
  border-radius:8px;
}
.footer-bottom{
  border-top:1px solid var(--border-color);
  padding:22px 0;
  margin-top:20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;color:var(--color-text-weak);
  flex-wrap:wrap;gap:8px;
}
@media(max-width:640px){
  .footer-bottom{flex-direction:column;text-align:center;padding:16px 0}
  .footer-newsletter{flex-direction:column}
  .footer-newsletter .btn-primary{width:100%}
}
/* ===== Misc ===== */
.grid-container{max-width:1200px}
@media(max-width:640px){
  .cell{padding-left:0.625rem;padding-right:0.625rem}
}
::selection{background:rgba(45,127,249,0.4);color:#fff}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0a0f1f}
::-webkit-scrollbar-thumb{background:rgba(45,127,249,0.4);border-radius:100px}
::-webkit-scrollbar-thumb:hover{background:rgba(45,127,249,0.6)}