/* roulang page: index */
:root{
  --bg-deep:#060C1C;
  --bg-body:#0C1629;
  --bg-panel:#0D1830;
  --blue:#3A7BFF;
  --blue-2:#2E8FFF;
  --teal:#2DD4BF;
  --coral:#FF5D73;
  --text:#EDF3FF;
  --text-2:#A8B8D6;
  --text-3:#6F83A8;
  --border:rgba(160, 200, 255, .16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.09);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-card:0 12px 32px rgba(2, 8, 24, .35);
  --shadow-glow:0 0 24px rgba(58,123,255,.4);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size:16px;
  line-height:1.75;
  background:
    radial-gradient(1100px 480px at 78% -4%, rgba(58,123,255,.18), transparent 60%),
    radial-gradient(700px 360px at 8% 18%, rgba(45,212,191,.06), transparent 55%),
    linear-gradient(180deg, #060C1C 0%, #0C1629 100%);
  min-height:100vh;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%}
button, input, textarea{font:inherit}
.container, .container-lg{max-width:1280px;padding-left:clamp(16px,3vw,32px);padding-right:clamp(16px,3vw,32px)}
.section{ padding:clamp(72px, 8vw, 128px) 0; }
.section-tint{ background:rgba(13,24,48,.32); border-top:1px solid rgba(160,200,255,.10); border-bottom:1px solid rgba(160,200,255,.10); }
.btn{
  border-radius:var(--radius-sm);
  font-weight:600;
  transition:all .22s ease;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
}
.btn-lg{min-height:52px;padding:.8rem 1.8rem;font-size:16px;border-radius:12px}
.btn-sm{min-height:38px;padding:.38rem .9rem;font-size:14px}
.btn-brand-main{
  background:linear-gradient(135deg,#2E8FFF, #1E5FEF);
  color:#fff !important;
  border:0;
  box-shadow:0 0 20px rgba(58,123,255,.35);
}
.btn-brand-main:hover,
.btn-brand-main:focus{
  color:#fff !important;
  transform:translateY(-1px);
  box-shadow:0 0 32px rgba(58,123,255,.55);
}
.btn-brand-main:active{
  transform:translateY(1px);
  box-shadow:0 0 12px rgba(58,123,255,.3);
}
.btn-glass{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(190,215,255,.3);
  color:var(--text);
}
.btn-glass:hover{
  background:rgba(255,255,255,.1);
  border-color:rgba(190,215,255,.55);
  color:#fff;
  transform:translateY(-1px);
}
.btn-coral{
  background:linear-gradient(135deg,#FF5D73,#E64059);
  color:#fff !important;
  border:0;
  box-shadow:0 0 16px rgba(255,93,115,.28);
}
.btn-coral:hover,
.btn-coral:focus{
  color:#fff !important;
  transform:translateY(-1px);
  box-shadow:0 0 26px rgba(255,93,115,.42);
}

.site-header{
  position:sticky;
  top:0;
  z-index:1050;
  background:rgba(6,12,28,.82);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(160,200,255,.12);
}
.navbar{padding:.68rem 0}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:800;
  color:#fff;
  letter-spacing:.01em;
}
.brand-mark{
  width:38px;
  height:38px;
  flex:0 0 38px;
  border-radius:12px;
  background:linear-gradient(135deg,#2DD4BF 10%,#3A7BFF 90%);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:900;
  font-size:15px;
  color:#041226;
  box-shadow:0 0 18px rgba(45,212,191,.3);
}
.brand-text em{
  font-style:normal;
  color:#2DD4BF;
}
.nav-links{
  gap:4px;
  align-items:center;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-links .nav-link{
  color:var(--text-2) !important;
  font-weight:500;
  font-size:15px;
  padding:.55rem .85rem !important;
  border-radius:9px;
  position:relative;
  transition:all .2s ease;
}
.nav-links .nav-link:hover,
.nav-links .nav-link:focus{
  color:#fff !important;
  background:rgba(255,255,255,.05);
}
.nav-links .nav-link.active{
  color:#fff !important;
  background:rgba(255,255,255,.06);
}
.nav-links .nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--teal);
}
.mobile-menu{
  display:flex;
  align-items:center;
  gap:8px;
}
.navbar-toggler, .custom-toggler{
  width:44px;
  height:44px;
  border:1px solid rgba(160,200,255,.28);
  border-radius:10px;
  background:rgba(255,255,255,.05);
  color:#EDF3FF;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.navbar-toggler:hover,
.navbar-toggler:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(58,123,255,.15);
}
.mobile-panel{
  padding-top:10px;
}
.mobile-panel .nav-links{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.mobile-panel .nav-link{
  display:block;
  width:100%;
}

.hero{position:relative;padding-top:clamp(58px,7vw,92px);padding-bottom:clamp(32px,4vw,56px);overflow:hidden}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg, rgba(6,12,28,.98) 0%, rgba(6,12,28,.84) 45%, rgba(6,12,28,.42) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-status{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:600;
  color:#bae7e1;
  background:rgba(45,212,191,.12);
  border:1px solid rgba(45,212,191,.36);
  padding:.35rem .8rem;
  border-radius:999px;
  letter-spacing:.02em;
}
.live-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 0 rgba(45,212,191,.5);
  animation:breathe 2s infinite;
}
.pulse-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--coral);
  animation:breathe 2s infinite;
}
@keyframes breathe{
  0%{box-shadow:0 0 0 0 rgba(45,212,191,.45)}
  60%{box-shadow:0 0 0 8px rgba(45,212,191,0)}
  100%{box-shadow:0 0 0 0 rgba(45,212,191,0)}
}
.hero-title{
  font-size:clamp(32px,5vw,56px);
  font-weight:800;
  line-height:1.2;
  margin:18px 0 16px;
  color:#fff;
  letter-spacing:-.01em;
}
.hero-title .text-blue{
  background:linear-gradient(90deg,#3A7BFF,#2DD4BF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:16px;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:28px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:14px 26px;
  margin-top:26px;
  font-size:13px;
  color:var(--text-2);
}
.hero-meta i{color:#3A7BFF;margin-right:5px}
.herostage{position:relative;z-index:2}
.column-cover{
  background:#0D1830;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:0 30px 80px rgba(2,8,24,.45);
  overflow:hidden;
  background-image:
    linear-gradient(rgba(13,24,48,0) 0%, rgba(13,24,48,.35) 100%);
}
.column-cover .ratio{min-height:220px}
.column-cover img{object-fit:cover;width:100%;height:100%}
.cover-info{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:16px 18px;
  border-top:1px solid rgba(160,200,255,.12);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  font-size:13px;
  color:var(--text-2);
}
.cover-info strong{color:#fff;font-size:14px;font-weight:600}
.badge-soft{
  display:inline-block;
  padding:.22rem .72rem;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  background:rgba(255,255,255,.07);
  color:#D7E3FF;
  border:1px solid rgba(160,200,255,.2);
  line-height:1.5;
}
.badge-live{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:.25rem .76rem;
  border-radius:999px;
  background:rgba(255,93,115,.14);
  color:#ffdde2;
  border:1px solid rgba(255,93,115,.42);
  font-size:13px;
}
.badge-live .spot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--coral);
  animation:blink 1.4s infinite;
}
@keyframes blink{
  0%,100%{opacity:1}
  50%{opacity:.35}
}

.countdown-section{padding:0 0 clamp(60px,7vw,104px)}
.countdown-panel{
  background:rgba(13,24,48,.72);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:clamp(24px,3.6vw,44px);
  box-shadow:0 24px 64px rgba(2,8,24,.5);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.countdown-panel h2{
  font-size:clamp(20px,2.2vw,30px);
  font-weight:800;
  color:#fff;
  margin-bottom:8px;
}
.countdown-panel .cd-note{font-size:14px;color:var(--text-2);margin-bottom:0}
.cd-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(160,200,255,.15);
  border-radius:var(--radius-md);
  padding:18px 10px;
  text-align:center;
}
.cd-value{
  font-variant-numeric:tabular-nums;
  font-size:clamp(32px,4vw,48px);
  font-weight:800;
  line-height:1.1;
  color:var(--teal);
}
.cd-label{color:var(--text-3);font-size:13px;margin-top:4px}

.eyebrow{
  font-size:13px;
  letter-spacing:.15em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--teal);
}
.section-title{
  font-size:clamp(22px,2.4vw,32px);
  font-weight:800;
  color:#fff;
  margin:.5rem 0 .4rem;
}
.section-desc{color:var(--text-2);font-size:15px;max-width:760px}
.section-head{margin-bottom:40px}

.feature-grid{
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:24px;
  align-items:stretch;
}
.feature-card{
  background:rgba(255,255,255,.055);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(58,123,255,.45);
  box-shadow:0 24px 60px rgba(2,8,24,.5);
}
.feature-main{height:100%;display:flex;flex-direction:column}
.feature-side-layout{display:flex;flex-direction:column;gap:24px}
.feature-side-layout .feature-card{flex:1}
.feature-media .ratio{min-height:190px}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body{padding:22px}
.feature-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.feature-step{font-weight:900;color:var(--teal);font-size:14px;letter-spacing:.12em}
.feature-body h3{font-size:19px;font-weight:700;color:#fff;margin:0 0 8px}
.feature-body p{font-size:14px;color:var(--text-2);margin:0}
.feature-inline{display:flex;gap:16px;align-items:flex-start;padding:22px}
.feature-inline .inline-icon{
  width:44px;
  flex:0 0 44px;
  height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#2DD4BF;
  background:rgba(45,212,191,.12);
  border:1px solid rgba(45,212,191,.25);
  font-size:18px;
}
.feature-inline h3{font-size:17px;font-weight:700;color:#fff;margin:0 0 4px}
.feature-inline p{font-size:14px;color:var(--text-2);margin:0}

.official-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:24px;
  align-items:stretch;
}
.official-feature{
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:30px;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  min-height:320px;
  background-image:linear-gradient(rgba(58,123,255,.08), transparent 60%);
}
.official-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(45,212,191,.12);
  border:1px solid rgba(45,212,191,.28);
  color:#b7f7ed;
  font-size:13px;
  border-radius:999px;
  padding:.18rem .8rem;
  margin-bottom:14px;
  width:max-content;
}
.official-title{
  font-size:clamp(20px,2vw,26px);
  font-weight:800;
  color:#fff;
  line-height:1.4;
  margin-bottom:10px;
}
.official-title a{color:#fff}
.official-title a:hover{color:#a9cbff}
.official-desc{color:var(--text-2);font-size:14px;margin-bottom:22px}
.official-foot{
  display:flex;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
  margin-top:auto;
}
.link-inline{color:var(--blue);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link-inline:hover{color:#7aa8ff}
.official-side{display:flex;flex-direction:column;gap:14px}
.official-row{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(160,200,255,.14);
  border-radius:var(--radius-md);
  padding:18px 18px 16px;
  transition:all .2s ease;
}
.official-row:hover{
  background:rgba(255,255,255,.08);
  border-color:rgba(58,123,255,.36);
}
.row-meta{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:10px;margin-bottom:7px}
.row-meta .badge-soft{padding:.12rem .55rem;font-size:12px}
.official-row h3{font-size:16px;font-weight:700;line-height:1.5;margin:0 0 4px}
.official-row h3 a{color:#fff}
.official-row h3 a:hover{color:#a9cbff}
.official-row p{color:var(--text-2);font-size:13px;margin:0}
.cms-empty{
  background:rgba(255,255,255,.05);
  border:1px dashed rgba(160,200,255,.25);
  border-radius:20px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:62px 20px;
  text-align:center;
  color:var(--text-2);
}
.cms-empty i{font-size:30px;color:var(--text-3)}

.remind-section{}
.remind-panel{
  background:rgba(13,24,48,.72);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:32px;
  padding:clamp(28px,4vw,52px);
  box-shadow:0 24px 70px rgba(2,8,24,.45);
}
.remind-left h2{
  font-size:clamp(22px,2.2vw,30px);
  font-weight:800;
  color:#fff;
}
.remind-left p{font-size:14px;color:var(--text-2);margin:12px 0 0}
.remind-form .form-label{
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.remind-form .form-control{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(160,200,255,.22);
  color:var(--text);
  border-radius:10px;
  padding:.72rem .95rem;
  min-height:50px;
  transition:all .2s ease;
}
.remind-form .form-control:focus{
  background:rgba(255,255,255,.09);
  border-color:var(--blue);
  box-shadow:0 0 0 4px rgba(58,123,255,.16);
  color:#fff;
}
.remind-form .form-control::placeholder{color:var(--text-3)}
.remind-form .form-text{color:var(--text-3);font-size:12px}
.is-hidden{display:none}
.success-note{
  text-align:center;
  padding:20px 10px;
}
.success-icon{
  width:56px;
  height:56px;
  margin:0 auto 12px;
  background:rgba(45,212,191,.14);
  border:1px solid rgba(45,212,191,.4);
  color:var(--teal);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
}

.replay-grid{}
.replay-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(160,200,255,.15);
  background:var(--bg-panel);
  transition:all .25s ease;
  height:100%;
}
.replay-card:hover{
  border-color:rgba(58,123,255,.55);
  transform:translateY(-4px);
  box-shadow:0 24px 60px rgba(2,8,24,.45);
}
.replay-card img{width:100%;height:100%;object-fit:cover}
.replay-card .badge-time{
  position:absolute;
  right:14px;
  bottom:14px;
  background:rgba(6,12,28,.78);
  border:1px solid rgba(160,200,255,.22);
  color:#fff;
  font-size:13px;
  padding:.2rem .7rem;
  border-radius:999px;
  backdrop-filter:blur(10px);
}
.replay-label{
  position:absolute;
  left:14px;
  top:14px;
  background:rgba(6,12,28,.72);
  backdrop-filter:blur(10px);
  border:1px solid rgba(160,200,255,.2);
  color:#EDF3FF;
  font-size:12px;
  border-radius:999px;
  padding:.2rem .7rem;
}
.replay-body{padding:20px}
.replay-body h3{font-size:18px;color:#fff;font-weight:700;margin:0 0 6px}
.replay-body p{font-size:14px;color:var(--text-2);margin:0}

.pre-cta{
  background:linear-gradient(135deg,
    rgba(58,123,255,.18),
    rgba(13,24,48,.3) 38%,
    rgba(45,212,191,.08)),
    var(--bg-panel);
  border-top:1px solid rgba(160,200,255,.12);
  border-bottom:1px solid rgba(160,200,255,.10);
  padding:clamp(32px,5vw,68px) 0;
}
.cta-strip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  flex-wrap:wrap;
}
.cta-strip h2{font-size:clamp(20px,2.2vw,30px);font-weight:800;color:#fff;margin:0 0 4px}
.cta-strip p{color:var(--text-2);margin:0}

.faq-wrap .accordion-item{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(160,200,255,.13) !important;
  border-radius:14px !important;
  margin-bottom:14px;
  overflow:hidden;
}
.faq-wrap .accordion-button{
  background:rgba(255,255,255,.04);
  color:#EDF3FF;
  font-size:16px;
  font-weight:600;
  padding:18px 20px;
  box-shadow:none;
  border-radius:14px !important;
}
.faq-wrap .accordion-button:focus{
  box-shadow:0 0 0 3px rgba(58,123,255,.14);
}
.faq-wrap .accordion-button:not(.collapsed){
  background:rgba(58,123,255,.14);
  color:#fff;
}
.faq-wrap .accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232DD4BF'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  filter:brightness(1.25);
  transform:rotate(-180deg);
}
.faq-wrap .accordion-body{
  color:var(--text-2);
  font-size:14px;
  padding:2px 20px 18px;
  border-top:1px solid rgba(160,200,255,.1);
}

.site-footer{
  background:#030611;
  border-top:1px solid rgba(160,200,255,.1);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:36px;
}
.footer-grid h4{
  color:#fff;
  font-size:16px;
  font-weight:700;
  margin:0 0 16px;
}
.footer-about .footer-brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:20px;
  color:#fff;
  margin-bottom:14px;
}
.footer-about p{
  font-size:14px;
  color:var(--text-2);
  margin-bottom:18px;
  max-width:360px;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
}
.footer-links a:hover{color:#7AA8FF}
.footer-help{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(160,200,255,.12);
  border-radius:14px;
  padding:16px;
  font-size:14px;
  color:var(--text-2);
}
.footer-help strong{color:#fff;font-size:14px}
.footer-help span{display:block;font-size:13px;margin-top:4px}
.footer-bottom{
  border-top:1px solid rgba(160,200,255,.09);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  color:var(--text-3);
  font-size:13px;
}
.media-note{display:flex;gap:6px;align-items:center;color:var(--text-3)}

@media (max-width:1199.98px){
  .feature-grid{grid-template-columns:1fr}
  .feature-side-layout{display:grid;grid-template-columns:1fr 1fr}
}
@media (max-width:991.98px){
  .official-grid{grid-template-columns:1fr}
  .nav-links .nav-link{padding:.55rem .6rem !important}
}
@media (max-width:767.98px){
  .section{padding-top:56px;padding-bottom:56px}
  .feature-side-layout{grid-template-columns:1fr}
  .remind-panel{grid-template-columns:1fr;gap:26px}
  .countdown-panel h2{font-size:20px}
  .cd-value{font-size:30px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-about{grid-column:1 / -1}
  .hero-title{font-size:clamp(28px,6vw,38px)}
  .official-feature{padding:22px}
  .cta-strip{display:block}
  .cta-strip .btn{margin-top:16px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .brand-text{font-size:18px}
  .brand-mark{width:34px;height:34px;flex-basis:34px}
  .replay-card .ratio{min-height:190px}
}

/* roulang page: category1 */
:root {
  --bg-deep: #060C1C;
  --bg-mid: #0C1629;
  --panel: #0D1830;
  --accent: #3A7BFF;
  --accent-deep: #1E5FEF;
  --ice: #2DD4BF;
  --coral: #FF5D73;
  --glass-light: rgba(255, 255, 255, 0.05);
  --glass-mid: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(160, 200, 255, 0.16);
  --text-main: #EDF3FF;
  --text-sub: #A8B8D6;
  --text-dim: #6F83A8;
  --radius-big: 20px;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 12px 32px rgba(2, 8, 24, 0.35);
  --shadow-glow: 0 0 24px rgba(58, 123, 255, 0.4);
  --transition: 0.25s ease;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-mid) 48%, #081222 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(rgba(120, 160, 255, 0.10) 0.6px, transparent 0.9px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 65%);
}

body::after {
  content: "";
  position: fixed;
  top: -18%;
  left: -12%;
  width: 46%;
  height: 48%;
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(58, 123, 255, 0.15), transparent 76%);
  z-index: 0;
}

main,
footer,
header {
  position: relative;
  z-index: 1;
}

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

a:hover {
  color: #6FA0FF;
}

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

.container {
  max-width: 1320px;
  padding-left: 22px;
  padding-right: 22px;
}

.btn {
  border: 0;
  border-radius: var(--radius-btn);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), opacity var(--transition);
  line-height: 1;
  height: 44px;
  min-width: 132px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
}

.btn-brand-main {
  background: linear-gradient(135deg, #2E8FFF 0%, var(--accent-deep) 100%);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(58, 123, 255, 0.35);
}

.btn-brand-main:hover,
.btn-brand-main:focus {
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(58, 123, 255, 0.55);
  background: linear-gradient(135deg, #3F9AFF 0%, #2A70F2 100%);
}

.btn-brand-main:active {
  transform: translateY(0);
  box-shadow: 0 0 14px rgba(58, 123, 255, 0.35);
}

.btn-brand-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid rgba(190, 215, 255, 0.28);
}

.btn-brand-ghost:hover,
.btn-brand-ghost:focus {
  background: rgba(255, 255, 255, 0.09);
  color: #ffffff;
  border-color: rgba(220, 235, 255, 0.5);
  transform: translateY(-1px);
}

.btn-coral {
  background: linear-gradient(135deg, #FF6A81, #F04A63);
  color: #ffffff;
  box-shadow: 0 0 18px rgba(255, 93, 115, 0.32);
}

.btn-coral:hover,
.btn-coral:focus {
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 0 34px rgba(255, 93, 115, 0.44);
  background: linear-gradient(135deg, #FF7C90, #F04A63);
}

.navbar-toggler {
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.25);
  outline: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1080;
  background: rgba(6, 12, 28, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(160, 200, 255, 0.14);
}

.navbar {
  min-height: 72px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-logo:hover {
  color: #ffffff;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(145deg, #1E5FEF, #3A7BFF);
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 0 22px rgba(58, 123, 255, 0.45);
  border: 1px solid rgba(160, 200, 255, 0.3);
}

.brand-text {
  color: var(--text-main);
  font-weight: 800;
}

.brand-text em {
  font-style: normal;
  color: var(--ice);
  font-weight: 700;
}

.nav-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.nav-links .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-sub);
  border-radius: 8px;
  position: relative;
  line-height: 1.2;
  background: transparent;
  transition: color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.nav-links .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  border-radius: 99px;
  background: var(--ice);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity var(--transition), transform var(--transition);
}

.nav-links .nav-link:hover,
.nav-links .nav-link:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-links .nav-link:hover::after,
.nav-links .nav-link:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-links .nav-link.active {
  color: #ffffff;
  font-weight: 600;
}

.nav-links .nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-cta {
  min-width: 124px;
  height: 40px;
  padding: 0 16px;
  font-size: 15px;
  box-shadow: 0 0 20px rgba(255, 93, 115, 0.26);
}

.mobile-menu .btn-brand-main {
  height: 40px;
  min-width: 0;
  padding: 0 14px;
  font-size: 14px;
  gap: 6px;
}

.mobile-panel {
  background: rgba(6, 12, 28, 0.92);
  border: 1px solid rgba(160, 200, 255, 0.14);
  border-top: 0;
  border-radius: 0 0 16px 16px;
  padding-left: 8px;
  padding-right: 8px;
}

.mobile-panel .nav-links {
  width: 100%;
}

.mobile-panel .nav-link {
  padding: 12px 14px;
}

.category-lead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 48px 0 56px;
  background: rgba(8, 15, 32, 0.55);
}

.lead-bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(100deg, rgba(5, 10, 24, 0.97) 0%, rgba(6, 16, 36, 0.80) 58%, rgba(14, 25, 52, 0.60) 100%),
  url("/assets/images/backpic/back-1.webp");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  z-index: -1;
}

.category-lead::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 620px;
  height: 160px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(58, 123, 255, 0.18), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.category-lead .container {
  position: relative;
  z-index: 2;
}

.crumbs {
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--text-dim);
}

.crumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.crumbs li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.crumbs li + li::before {
  content: "/";
  color: rgba(160, 200, 255, 0.28);
  margin: 0 4px;
}

.crumbs a {
  color: var(--text-sub);
}

.crumbs a:hover {
  color: #ffffff;
}

.lead-title {
  max-width: 900px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--ice);
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.24);
  border-radius: 999px;
}

.eyebrow i {
  font-size: 12px;
}

.category-lead h1 {
  margin: 18px 0 14px;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text-main);
}

.category-lead h1 strong {
  color: var(--ice);
  font-weight: 800;
}

.lead-description {
  max-width: 820px;
  color: var(--text-sub);
  font-size: 17px;
  line-height: 1.9;
  margin: 0 0 24px;
}

.lead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.lead-status-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 14px;
}

.lead-status-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lead-status-item i {
  color: var(--ice);
}

.section {
  padding: clamp(68px, 7vw, 112px) 0;
  border-bottom: 1px solid rgba(160, 200, 255, 0.08);
}

.section-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
}

.section-top h2 {
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
}

.section-top .section-note {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 620px;
  margin: 0;
}

.glass-panel {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-big);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.panel-shade {
  background: rgba(13, 24, 48, 0.88);
}

.section-brief {
  background: linear-gradient(180deg, rgba(8, 15, 32, 0.55) 0%, rgba(12, 22, 41, 0.40) 100%);
}

.section-brief .section-top {
  align-items: center;
}

.feature-panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-big);
  background: var(--panel);
  overflow: hidden;
  border: 1px solid rgba(160, 200, 255, 0.15);
  box-shadow: var(--shadow-card);
}

.feature-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 8;
  min-height: 220px;
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 12, 28, 0) 30%, rgba(6, 12, 28, 0.72) 100%);
}

.cover-tag {
  position: absolute;
  z-index: 2;
  left: 18px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: rgba(6, 12, 28, 0.72);
  border: 1px solid rgba(45, 212, 191, 0.3);
  color: var(--ice);
  font-size: 13px;
  border-radius: 999px;
}

.cover-time {
  position: absolute;
  z-index: 2;
  right: 18px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: rgba(6, 12, 28, 0.72);
  color: var(--text-main);
  border: 1px solid rgba(160, 200, 255, 0.18);
  font-size: 13px;
  border-radius: 999px;
}

.feature-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.feature-content h3 {
  font-size: clamp(20px, 2vw, 27px);
  font-weight: 800;
  line-height: 1.4;
  margin: 0 0 16px;
}

.feature-content p {
  color: var(--text-sub);
  line-height: 1.9;
  margin: 0 0 22px;
}

.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  margin-bottom: 18px;
}

.tag-mini {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(160, 200, 255, 0.13);
  color: var(--text-sub);
  border-radius: 999px;
  font-size: 12px;
}

.tag-mini.ice {
  color: var(--ice);
  border-color: rgba(45, 212, 191, 0.25);
}

.tag-mini.coral {
  color: #FF8A99;
  border-color: rgba(255, 93, 115, 0.3);
}

.dynamic-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

.dynamic-item {
  display: flex;
  flex-direction: column;
  flex: 1;
  border: 1px solid rgba(160, 200, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-card);
  padding: 22px;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition);
}

.dynamic-item:hover {
  transform: translateY(-3px);
  border-color: rgba(160, 200, 255, 0.34);
  background-color: rgba(255, 255, 255, 0.07);
}

.dynamic-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.5;
  color: var(--text-main);
}

.dynamic-item p {
  margin: 0 0 16px;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
  flex: 1;
}

.dynamic-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ice);
  font-weight: 600;
  font-size: 14px;
  transition: gap var(--transition), color var(--transition);
}

.link-arrow:hover {
  color: #6DE8D8;
  gap: 9px;
}

.status-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #FF8A99;
  white-space: nowrap;
}

.status-live i {
  color: var(--coral);
}

.status-soon {
  color: var(--ice);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255, 93, 115, 0.5); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(255, 93, 115, 0); }
}

.cover-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30px;
}

.cover-item {
  display: flex;
  gap: 16px;
  align-items: stretch;
  border: 1px solid rgba(160, 200, 255, 0.13);
  border-radius: var(--radius-card);
  padding: 14px;
  background: rgba(255, 255, 255, 0.04);
  transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
}

.cover-item:hover {
  border-color: rgba(160, 200, 255, 0.32);
  background-color: rgba(255, 255, 255, 0.07);
  transform: translateX(-4px);
}

.cover-thumb {
  flex: 0 0 148px;
  width: 148px;
  border-radius: 12px;
  overflow: hidden;
  min-height: 96px;
  background: #0D1830;
}

.cover-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.cover-main h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.5;
  color: var(--text-main);
}

.cover-main p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cover-main .link-arrow {
  margin-top: 8px;
  font-weight: 600;
}

.info-scene {
  border-radius: var(--radius-big);
  background: linear-gradient(135deg, rgba(13, 24, 48, 0.94), rgba(10, 20, 40, 0.92));
  border: 1px solid rgba(160, 200, 255, 0.18);
  padding: clamp(28px, 4vw, 44px);
  box-shadow: var(--shadow-card);
}

.info-scene h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.info-scene > p {
  color: var(--text-sub);
  font-size: 16px;
  max-width: 920px;
  margin: 0 0 36px;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.scene-card {
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(160, 200, 255, 0.15);
  padding: 24px;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition);
}

.scene-card:hover {
  transform: translateY(-4px);
  border-color: rgba(160, 200, 255, 0.32);
  background: rgba(255, 255, 255, 0.07);
}

.scene-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(58, 123, 255, 0.14);
  color: #6FA0FF;
  font-size: 20px;
  margin-bottom: 18px;
}

.scene-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
  color: #ffffff;
}

.scene-card p {
  margin: 0;
  color: var(--text-sub);
  line-height: 1.8;
  font-size: 15px;
}

.scene-card:first-child {
  grid-row: span 2;
}

.scene-card:last-child {
  border-color: rgba(45, 212, 191, 0.2);
}

.section-steps {
  background: rgba(6, 12, 28, 0.6);
}

.step-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 12px;
}

.step-card {
  position: relative;
  padding: 28px 26px 26px;
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(160, 200, 255, 0.13);
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition);
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 212, 191, 0.3);
  background-color: rgba(255, 255, 255, 0.07);
}

.step-num {
  font-size: 13px;
  color: var(--ice);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 26px;
  display: block;
}

.step-num::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--ice);
  vertical-align: middle;
  margin-right: 8px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 14px;
  color: #ffffff;
}

.step-card p {
  margin: 0;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
}

.step-divider {
  position: absolute;
  top: 31px;
  right: -14px;
  color: rgba(160, 200, 255, 0.22);
  z-index: 1;
  font-size: 14px;
}

.channel-bent {
  background: linear-gradient(180deg, rgba(8, 15, 32, 0.55), rgba(12, 22, 41, 0.65));
}

.channel-card-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.channel-card {
  border-radius: var(--radius-big);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(160, 200, 255, 0.15);
  overflow: hidden;
  display: flex;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition);
}

.channel-card:hover {
  transform: translateY(-4px);
  border-color: rgba(160, 200, 255, 0.36);
  background: rgba(255, 255, 255, 0.075);
}

.channel-media {
  flex: 0 0 158px;
  width: 158px;
  min-height: 100%;
  overflow: hidden;
}

.channel-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-body {
  padding: 20px 22px;
  flex: 1;
}

.channel-body .tag-mini {
  margin-bottom: 12px;
}

.channel-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 10px;
  color: #ffffff;
}

.channel-body p {
  font-size: 15px;
  color: var(--text-sub);
  margin: 0 0 14px;
  line-height: 1.8;
}

.faq-section {
  background: rgba(6, 12, 28, 0.66);
}

.faq-wrap {
  max-width: 930px;
  margin: 0 auto;
}

.accordion {
  --bs-accordion-bg: transparent;
  --bs-accordion-color: var(--text-sub);
  --bs-accordion-border-width: 0;
  --bs-accordion-btn-bg: transparent;
  --bs-accordion-active-bg: transparent;
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-border-radius: 16px;
}

.accordion-item {
  border: 1px solid rgba(160, 200, 255, 0.15);
  border-radius: 16px !important;
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: 14px;
  overflow: hidden;
}

.accordion-button {
  background: rgba(255, 255, 255, 0.045);
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 22px;
  border-radius: 16px !important;
  box-shadow: none;
  transition: background-color var(--transition), color var(--transition);
}

.accordion-button::after {
  background: none;
  content: "\f078";
  font-family: "Font Awesome 6 Free", "Font Awesome 5 Free", sans-serif;
  font-weight: 900;
  background-image: none;
  color: var(--ice);
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.accordion-button:not(.collapsed)::after {
  content: "\f077";
  background-image: none;
  transform: none;
}

.accordion-button:not(.collapsed) {
  color: #ffffff;
  background: rgba(45, 212, 191, 0.08);
}

.accordion-button:focus {
  box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.20);
  border-radius: 16px;
}

.accordion-body {
  padding: 0 22px 22px;
  color: var(--text-sub);
  line-height: 1.85;
  font-size: 15px;
}

.cta-band {
  padding: clamp(64px, 7vw, 100px) 0;
  background: linear-gradient(160deg, #091229, #0C1830);
}

.cta-inner {
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(58, 123, 255, 0.22), rgba(45, 212, 191, 0.08));
  border: 1px solid rgba(160, 200, 255, 0.24);
  padding: clamp(32px, 5vw, 56px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: "";
  position: absolute;
  left: 20%;
  top: -110px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(58, 123, 255, 0.28), transparent 70%);
  pointer-events: none;
}

.cta-inner h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  margin: 0 0 18px;
  color: #ffffff;
  letter-spacing: -0.02em;
  position: relative;
}

.cta-inner p {
  color: var(--text-sub);
  max-width: 720px;
  margin: 0 auto 28px;
  position: relative;
  font-size: 17px;
}

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

.site-footer {
  background: #050A17;
  border-top: 1px solid rgba(160, 200, 255, 0.14);
  padding: 58px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr 1fr 1.1fr;
  gap: 30px;
  margin-bottom: 38px;
}

.footer-about .brand-logo {
  display: inline-flex;
  margin-bottom: 18px;
}

.footer-about .brand-logo .brand-text {
  color: #ffffff;
}

.footer-about p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.9;
  margin: 0;
}

.site-footer h4 {
  font-size: 16px;
  color: #ffffff;
  font-weight: 700;
  margin: 0 0 18px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-sub);
  font-size: 15px;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
  color: #86F5E8;
  padding-left: 3px;
}

.footer-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-help {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(160, 200, 255, 0.15);
  padding: 16px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.footer-help strong {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.6;
}

.footer-help span {
  color: var(--text-dim);
  line-height: 1.7;
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(160, 200, 255, 0.1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 14px;
}

.footer-bottom .media-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom .media-note i {
  color: var(--ice);
}

@media (max-width: 1199px) {
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scene-card:first-child {
    grid-row: auto;
  }
  .step-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .channel-card {
    flex-direction: column;
  }
  .channel-media {
    width: 100%;
    aspect-ratio: 16 / 7;
    min-height: 0;
  }
}

@media (max-width: 991px) {
  .site-header {
    background: rgba(6, 12, 28, 0.94);
  }
  .dynamic-stack {
    margin-top: 16px;
  }
  .cover-list {
    margin-top: 18px;
  }
  .lead-description {
    font-size: 16px;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-logo {
    font-size: 18px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    flex-basis: 34px;
    font-size: 18px;
  }
  .category-lead h1 {
    font-size: clamp(24px, 6vw, 32px);
  }
  .lead-actions .btn {
    width: 100%;
  }
  .btn {
    height: 48px;
    min-width: 0;
  }
  .feature-content {
    padding: 20px;
  }
  .cover-item {
    flex-direction: column;
  }
  .cover-thumb {
    width: 100%;
    aspect-ratio: 16 / 8;
    min-height: 0;
    flex-basis: auto;
  }
  .scene-grid {
    grid-template-columns: 1fr;
  }
  .step-row {
    grid-template-columns: 1fr;
  }
  .step-divider {
    display: none;
  }
  .channel-card-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
  .accordion-button {
    font-size: 15px;
    padding: 18px 16px;
  }
  .accordion-body {
    padding: 0 16px 18px;
  }
}

@media (max-width: 520px) {
  .lead-actions .btn {
    font-size: 15px;
  }
  .cover-tag,
  .cover-time {
    left: 10px;
    top: 10px;
    right: auto;
    font-size: 12px;
  }
  .cover-time {
    left: auto;
    right: 10px;
  }
  .dynamic-item {
    padding: 18px;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
        --bg-deep: #060C1C;
        --bg-soft: #0C1629;
        --bg-panel: #0D1830;
        --signal: #3A7BFF;
        --signal-light: #2E8FFF;
        --signal-dark: #1E5FEF;
        --ice: #2DD4BF;
        --coral: #FF5D73;
        --text-main: #EDF3FF;
        --text-sub: #A8B8D6;
        --text-soft: #6F83A8;
        --glass-light: rgba(255, 255, 255, 0.05);
        --glass-mid: rgba(255, 255, 255, 0.09);
        --border-glass: rgba(160, 200, 255, 0.16);
        --radius-lg: 20px;
        --radius-md: 16px;
        --radius-sm: 10px;
        --shadow-card: 0 12px 32px rgba(2, 8, 24, 0.35);
        --shadow-glow: 0 0 24px rgba(58, 123, 255, 0.4);
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.75;
        color: var(--text-main);
        background:
            radial-gradient(circle at 15% -10%, rgba(58, 123, 255, 0.16), transparent 38%),
            radial-gradient(circle at 90% 8%, rgba(45, 212, 191, 0.06), transparent 30%),
            linear-gradient(180deg, var(--bg-deep), var(--bg-soft) 60%, var(--bg-deep));
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: var(--signal);
        text-decoration: none;
        transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
    }

    a:hover {
        color: #74A9FF;
    }

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

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        font-weight: 700;
        line-height: 1.35;
        color: var(--text-main);
        margin: 0 0 0.6em;
    }

    p {
        margin: 0 0 1rem;
    }

    .container {
        max-width: 1320px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .section-space {
        padding: clamp(56px, 8vw, 128px) 0;
    }

    a:focus-visible,
    button:focus-visible,
    .form-control:focus,
    .form-select:focus,
    .navbar-toggler:focus {
        outline: 2px solid var(--ice);
        outline-offset: 2px;
        box-shadow: none !important;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 1045;
        background: rgba(6, 12, 28, 0.74);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-glass);
    }

    .site-header .navbar {
        min-height: 72px;
        padding: 10px 0;
    }

    .site-header .container {
        position: relative;
        z-index: 2;
    }

    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        color: #fff;
        font-weight: 800;
        flex-shrink: 0;
    }

    .brand-logo:hover {
        color: #fff;
    }

    .brand-mark {
        width: 38px;
        height: 38px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--signal-light), var(--signal-dark));
        color: #fff;
        font-size: 20px;
        font-weight: 900;
        box-shadow: 0 0 18px rgba(58, 123, 255, 0.4);
    }

    .brand-text {
        font-size: 20px;
        letter-spacing: 0.02em;
        color: #fff;
    }

    .brand-text em {
        font-style: normal;
        color: var(--ice);
    }

    .nav-links {
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 2px;
    }

    .site-header .nav-link {
        color: var(--text-sub);
        font-weight: 600;
        border-radius: var(--radius-sm);
        padding: 8px 14px;
        position: relative;
        font-size: 15px;
    }

    .site-header .nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.06);
    }

    .site-header .nav-link.active {
        color: #fff;
        background: rgba(58, 123, 255, 0.12);
    }

    .site-header .nav-link.active::after {
        content: "";
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 4px;
        height: 2px;
        border-radius: 2px;
        background: var(--ice);
    }

    .nav-cta {
        min-width: 132px;
    }

    .mobile-menu {
        gap: 8px;
        align-items: center;
    }

    .mobile-menu .btn {
        flex-shrink: 0;
    }

    .navbar-toggler {
        border: 1px solid var(--border-glass);
        background: rgba(255, 255, 255, 0.06);
        border-radius: var(--radius-sm);
        color: var(--text-main);
        width: 44px;
        height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0;
    }

    .navbar-toggler i {
        font-size: 18px;
        color: var(--text-main);
    }

    .mobile-panel {
        background: rgba(8, 15, 32, 0.96);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-md);
        margin: 6px 12px 12px;
        padding: 8px 12px;
    }

    .btn-brand-main,
    .btn-brand-coral {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        line-height: 1.2;
        border: 0;
        transition: all 0.24s ease;
    }

    .btn-brand-main {
        color: #fff;
        background: linear-gradient(135deg, var(--signal-light), var(--signal-dark));
        box-shadow: var(--shadow-glow);
    }

    .btn-brand-main:hover {
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 0 32px rgba(58, 123, 255, 0.55);
    }

    .btn-brand-main:active {
        transform: translateY(1px);
        box-shadow: 0 0 10px rgba(58, 123, 255, 0.3);
    }

    .btn-brand-coral {
        color: #fff;
        background: linear-gradient(135deg, #FF6B7C, var(--coral));
        box-shadow: 0 0 20px rgba(255, 93, 115, 0.35);
    }

    .btn-brand-coral:hover {
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 0 30px rgba(255, 93, 115, 0.5);
    }

    .btn-brand-coral:active {
        transform: translateY(1px);
    }

    .btn-ghost-light {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        padding: 10px 20px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(190, 215, 255, 0.3);
        transition: all 0.2s ease;
    }

    .btn-ghost-light:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.09);
        border-color: rgba(190, 215, 255, 0.55);
    }

    .btn-sm {
        min-height: 40px;
        padding: 8px 16px;
        font-size: 14px;
        border-radius: 8px;
    }

    .badge-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 28px;
        padding: 0 12px;
        border-radius: 999px;
        font-size: 13px;
        color: var(--ice);
        border: 1px solid rgba(45, 212, 191, 0.4);
        background: rgba(45, 212, 191, 0.08);
        font-weight: 600;
    }

    .article-hero {
        position: relative;
        padding: clamp(44px, 7vw, 96px) 0 clamp(36px, 5vw, 60px);
        background:
            linear-gradient(180deg, rgba(6, 12, 28, 0.82), rgba(11, 20, 40, 0.92)),
            url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
        border-bottom: 1px solid var(--border-glass);
    }

    .breadcrumb-wrap {
        margin-bottom: 28px;
    }

    .breadcrumb {
        margin: 0;
    }

    .breadcrumb-item + .breadcrumb-item::before {
        content: "\f105";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        font-size: 12px;
        color: #4D618B;
        padding: 0 8px;
    }

    .breadcrumb-item {
        color: var(--text-soft);
        font-size: 14px;
    }

    .breadcrumb-item a {
        color: var(--text-sub);
    }

    .breadcrumb-item a:hover {
        color: #fff;
    }

    .breadcrumb-item.active {
        color: var(--text-main);
    }

    .hero-kicker {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--ice);
        font-weight: 700;
        font-size: 14px;
        letter-spacing: 0.04em;
        margin-bottom: 14px;
    }

    .hero-kicker::before {
        content: "";
        width: 22px;
        height: 2px;
        background: var(--ice);
        border-radius: 2px;
    }

    .article-page-title {
        font-size: clamp(28px, 3.5vw, 44px);
        font-weight: 800;
        line-height: 1.35;
        margin-bottom: 16px;
        color: #fff;
    }

    .article-lead {
        max-width: 760px;
        color: var(--text-sub);
        font-size: 16px;
        line-height: 1.85;
        margin-bottom: 0;
    }

    .article-main {
        padding: clamp(48px, 6vw, 92px) 0;
        background-image:
            linear-gradient(rgba(13, 24, 48, 0.3), rgba(6, 12, 28, 0.6)),
            radial-gradient(circle at 80% 30%, rgba(45, 212, 191, 0.04), transparent 30%);
    }

    .post-panel {
        background: var(--bg-panel);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        padding: clamp(24px, 4vw, 48px);
        min-height: 260px;
    }

    .post-head {
        margin-bottom: 26px;
    }

    .post-badges {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        margin-bottom: 18px;
    }

    .badge-cat {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 28px;
        padding: 0 12px;
        border-radius: 999px;
        font-size: 13px;
        font-weight: 600;
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.07);
        border: 1px solid var(--border-glass);
    }

    .post-time {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--text-soft);
        font-size: 14px;
    }

    .post-origin {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--text-soft);
        font-size: 14px;
    }

    .post-title {
        font-size: clamp(26px, 3vw, 40px);
        font-weight: 800;
        line-height: 1.4;
        color: #fff;
        margin-bottom: 16px;
    }

    .post-summary {
        background: rgba(58, 123, 255, 0.06);
        border-left: 3px solid var(--ice);
        border-radius: 0 14px 14px 0;
        padding: 16px 20px;
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.85;
        margin-bottom: 0;
        word-break: break-word;
    }

    .post-cover {
        margin: 28px 0 0;
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-glass);
        background: var(--bg-deep);
        box-shadow: 0 12px 32px rgba(2, 8, 24, 0.35);
    }

    .post-cover img {
        width: 100%;
        aspect-ratio: 16 / 8;
        object-fit: cover;
    }

    .article-content {
        margin-top: 32px;
        padding-top: 6px;
    }

    .content-body {
        font-size: 16px;
        line-height: 1.9;
        color: #E6EFFF;
        word-break: break-word;
    }

    .content-body > * + * {
        margin-top: 1.1em;
    }

    .content-body p {
        line-height: 1.9;
        margin-bottom: 1.1em;
    }

    .content-body h2,
    .content-body h3,
    .content-body h4 {
        margin-top: 1.8em;
        margin-bottom: 0.8em;
        color: #fff;
        overflow-wrap: break-word;
    }

    .content-body h2 {
        font-size: clamp(21px, 2.4vw, 28px);
        padding-left: 14px;
        border-left: 4px solid var(--ice);
        border-radius: 2px;
    }

    .content-body h3 {
        font-size: 20px;
    }

    .content-body ul,
    .content-body ol {
        margin: 1.25em 0;
        padding-left: 1.5rem;
    }

    .content-body ul {
        list-style: disc;
    }

    .content-body ol {
        list-style: decimal;
    }

    .content-body li {
        margin-bottom: 0.5em;
    }

    .content-body blockquote {
        background: rgba(58, 123, 255, 0.08);
        border-left: 3px solid var(--ice);
        border-radius: 0 14px 14px 0;
        padding: 18px 22px;
        color: var(--text-sub);
        font-size: 15px;
        margin: 1.6em 0;
    }

    .content-body img {
        max-width: 100%;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-glass);
    }

    .content-body a {
        color: var(--signal);
        border-bottom: 1px solid rgba(58, 123, 255, 0.4);
    }

    .content-body a:hover {
        color: var(--ice);
        border-bottom-color: var(--ice);
    }

    .content-body pre {
        background: #0A1226;
        border: 1px solid var(--border-glass);
        border-radius: 14px;
        padding: 18px 20px;
        overflow-x: auto;
        font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
        color: #D6F3FF;
        font-size: 14px;
        margin: 1.6em 0;
    }

    .content-body code {
        font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 6px;
        padding: 2px 6px;
        font-size: 0.92em;
        color: #D6F3FF;
    }

    .content-body hr {
        border: 0;
        border-top: 1px solid var(--border-glass);
        margin: 32px 0;
    }

    .post-tag-row {
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--border-glass);
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
    }

    .post-tag-row .row-label {
        color: var(--text-soft);
        font-size: 14px;
        font-weight: 700;
    }

    .tag-pill {
        display: inline-flex;
        align-items: center;
        min-height: 30px;
        padding: 0 12px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border-glass);
        color: var(--text-sub);
        font-size: 13px;
        transition: border-color 0.2s ease, color 0.2s ease;
    }

    .tag-pill:hover {
        color: #fff;
        border-color: rgba(45, 212, 191, 0.45);
    }

    .article-explore {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: clamp(24px, 3vw, 40px);
        margin-top: 28px;
        -webkit-backdrop-filter: blur(12px);
        backdrop-filter: blur(12px);
    }

    .explore-card {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        height: 100%;
        padding: 20px;
        border-radius: var(--radius-md);
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--border-glass);
        transition: transform 0.22s ease, border-color 0.22s ease, background-color 0.22s ease, box-shadow 0.22s ease;
    }

    .explore-card:hover {
        transform: translateY(-4px);
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(58, 123, 255, 0.5);
        box-shadow: 0 18px 40px rgba(2, 8, 24, 0.4);
    }

    .explore-icon {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        color: #fff;
        background: linear-gradient(135deg, var(--signal-light), var(--signal-dark));
        box-shadow: 0 0 16px rgba(58, 123, 255, 0.3);
        font-size: 18px;
    }

    .explore-card h3 {
        margin-bottom: 4px;
        font-size: 17px;
        font-weight: 800;
        color: #fff;
    }

    .explore-card p {
        margin-bottom: 0;
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.7;
    }

    .article-aside {
        position: relative;
    }

    .sticky-side {
        position: sticky;
        top: 96px;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .aside-card {
        background: var(--glass-light);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: 22px;
        box-shadow: var(--shadow-card);
    }

    .aside-card .widget-title {
        font-size: 18px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 6px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .widget-title i {
        color: var(--ice);
    }

    .widget-desc {
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 16px;
    }

    .sidebar-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .sidebar-list li + li {
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .sidebar-list a {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 13px 4px;
        color: var(--text-sub);
        font-size: 15px;
        font-weight: 500;
        border-radius: 8px;
        transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .sidebar-list a:hover {
        color: #fff;
        padding-left: 10px;
    }

    .sidebar-list a i {
        width: 24px;
        text-align: center;
        color: var(--signal);
    }

    .form-label {
        color: var(--text-main);
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .form-control,
    .form-select {
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-sm);
        color: var(--text-main);
        min-height: 44px;
        font-size: 15px;
        box-shadow: none;
    }

    .form-control:focus,
    .form-select:focus {
        background: rgba(255, 255, 255, 0.09);
        border-color: var(--signal);
        box-shadow: none;
        color: #fff;
    }

    .form-control::placeholder {
        color: var(--text-soft);
    }

    .form-select {
        color-scheme: dark;
    }

    .form-note {
        margin-top: 8px;
        color: var(--ice);
        font-size: 13px;
        min-height: 22px;
        display: none;
    }

    .remind-form.is-success .form-note {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .remind-form.is-success .btn-brand-coral {
        opacity: 0.75;
    }

    .side-cover {
        margin-top: 12px;
        border-radius: var(--radius-md);
        overflow: hidden;
        position: relative;
        min-height: 160px;
        background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        border: 1px solid var(--border-glass);
    }

    .side-cover .side-cover-mask {
        padding: 20px;
        min-height: 160px;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        background: linear-gradient(200deg, rgba(6, 12, 28, 0.1), rgba(6, 12, 28, 0.82));
    }

    .side-cover span {
        font-size: 13px;
        color: var(--ice);
        font-weight: 700;
        margin-bottom: 4px;
    }

    .side-cover strong {
        color: #fff;
        font-size: 16px;
        line-height: 1.5;
    }

    .not-found-panel {
        padding: clamp(60px, 8vw, 120px) 0;
        display: flex;
        justify-content: center;
    }

    .notfound-card {
        max-width: 640px;
        width: 100%;
        text-align: center;
        background: var(--glass-light);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: clamp(36px, 6vw, 72px) clamp(20px, 4vw, 56px);
        box-shadow: var(--shadow-card);
    }

    .notfound-icon {
        width: 76px;
        height: 76px;
        border-radius: 24px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(58, 123, 255, 0.12);
        color: var(--signal);
        font-size: 32px;
        margin-bottom: 28px;
    }

    .notfound-card h1 {
        font-weight: 800;
        font-size: clamp(24px, 4vw, 34px);
        margin-bottom: 12px;
    }

    .notfound-card p {
        color: var(--text-sub);
        margin-bottom: 28px;
    }

    .site-footer {
        background: #040814;
        border-top: 1px solid var(--border-glass);
        padding: clamp(48px, 7vw, 88px) 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 36px;
        padding-bottom: 44px;
    }

    .footer-brand-logo {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 20px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 16px;
    }

    .footer-brand-logo .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 11px;
        font-size: 18px;
        box-shadow: none;
        background: linear-gradient(135deg, var(--signal-light), var(--signal-dark));
    }

    .footer-brand-logo em {
        font-style: normal;
        color: var(--ice);
    }

    .footer-about p {
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.8;
        max-width: 300px;
    }

    .site-footer h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 14px;
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-links li + li {
        margin-top: 10px;
    }

    .footer-links a {
        color: var(--text-sub);
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: color 0.2s ease;
    }

    .footer-links a:hover {
        color: #fff;
    }

    .footer-help {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(160, 200, 255, 0.12);
        border-radius: var(--radius-md);
        padding: 16px;
    }

    .footer-help strong {
        display: block;
        color: #fff;
        font-size: 14px;
        margin-bottom: 6px;
    }

    .footer-help span {
        color: var(--text-soft);
        font-size: 13px;
        line-height: 1.6;
    }

    .footer-bottom {
        border-top: 1px solid rgba(160, 200, 255, 0.1);
        padding: 20px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
        color: var(--text-soft);
        font-size: 14px;
    }

    .media-note {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    @media (min-width: 992px) and (max-width: 1199.98px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .post-cover img {
            aspect-ratio: 16 / 9;
        }
    }

    @media (max-width: 991.98px) {
        .site-header .nav-wrap {
            padding: 10px 0;
        }

        .article-explore {
            margin-bottom: 32px;
        }

        .article-aside {
            margin-top: 8px;
        }

        .sticky-side {
            position: static;
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
    }

    @media (max-width: 767.98px) {
        body {
            font-size: 15px;
        }

        .container {
            padding-left: 16px;
            padding-right: 16px;
        }

        .post-panel {
            border-radius: 16px;
            padding: 20px 16px;
        }

        .post-summary {
            padding: 14px 16px;
            font-size: 14px;
        }

        .content-body {
            font-size: 15.5px;
            line-height: 1.85;
        }

        .explore-card {
            padding: 16px;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 26px;
            padding-bottom: 28px;
        }

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

    @media (max-width: 575.98px) {
        .brand-text {
            font-size: 18px;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
        }

        .mobile-menu .btn {
            min-height: 44px;
            padding: 8px 14px;
            font-size: 14px;
        }

        .mobile-menu .btn span {
            display: none;
        }

        .mobile-menu .btn i {
            margin: 0;
        }

        .article-page-title {
            font-size: 27px;
        }

        .post-title {
            font-size: 25px;
        }

        .post-cover img {
            aspect-ratio: 16 / 9;
        }

        .post-badges {
            gap: 8px;
        }

        .btn-brand-main,
        .btn-brand-coral {
            min-height: 48px;
            width: 100%;
        }

        .article-explore .btn {
            width: 100%;
        }

        .post-tag-row {
            gap: 8px;
        }
    }

/* roulang page: category2 */
:root{
    --bg-deep:#060C1C;
    --bg-main:#0C1629;
    --bg-panel:#0D1830;
    --bg-panel-2:#111E3A;
    --signal-blue:#3A7BFF;
    --signal-blue-2:#2E8FFF;
    --ice:#2DD4BF;
    --coral:#FF5D73;
    --glass-light:rgba(255,255,255,.05);
    --glass-heavy:rgba(255,255,255,.09);
    --glass-stroke:rgba(160,200,255,.16);
    --text-main:#EDF3FF;
    --text-sub:#A8B8D6;
    --text-weak:#6F83A8;
    --radius-lg:20px;
    --radius-md:16px;
    --radius-sm:10px;
    --shadow-card:0 12px 32px rgba(2,8,24,.35);
    --shadow-glow:0 0 24px rgba(58,123,255,.4);
    --shadow-card-hover:0 0 0 1px rgba(58,123,255,.25),0 24px 60px rgba(2,8,24,.5);
    --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--font-sans);
    background:linear-gradient(160deg,var(--bg-deep) 0%,var(--bg-main) 48%,#0B1324 100%);
    color:var(--text-main);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    top:0;left:0;right:0;height:360px;
    background:radial-gradient(ellipse at 18% -10%,rgba(58,123,255,.16) 0%,rgba(45,212,191,.05) 36%,transparent 70%);
    pointer-events:none;
    z-index:0;
  }
  a{color:var(--signal-blue);text-decoration:none;transition:color .2s ease}
  a:hover{color:#6FA1FF}
  img{max-width:100%;height:auto}
  .container{max-width:1200px;padding-left:20px;padding-right:20px}

  /* ===== Header ===== */
  .site-header{
    position:sticky;top:0;z-index:1000;
    background:rgba(6,12,28,.72);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(160,200,255,.08);
    padding:12px 0;
    transition:background .25s ease,box-shadow .25s ease;
  }
  .site-header.scrolled{
    background:rgba(6,12,28,.9);
    box-shadow:0 10px 32px rgba(2,8,24,.4);
  }
  .site-header .navbar{padding:0}
  .site-header .nav-link{
    font-size:15px;
    font-weight:500;
    color:var(--text-sub);
    padding:8px 14px !important;
    border-radius:var(--radius-sm);
    transition:color .2s,background .2s;
    position:relative;
  }
  .site-header .nav-link:hover{
    color:#fff;
    background:rgba(255,255,255,.04);
  }
  .site-header .nav-link:hover::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:-4px;
    height:2px;
    border-radius:2px;
    background:var(--ice);
  }
  .site-header .nav-link.active{
    color:#fff;
    background:rgba(255,255,255,.06);
  }
  .site-header .nav-link.active::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:-4px;
    height:2px;
    border-radius:2px;
    background:var(--ice);
  }
  .site-header .dropdown-menu{
    background:var(--bg-panel);
    border:1px solid var(--glass-stroke);
    border-radius:14px;
    box-shadow:var(--shadow-card);
    padding:8px;
    min-width:200px;
  }
  .site-header .dropdown-item{
    border-radius:10px;
    padding:10px 16px;
    color:var(--text-sub);
    font-size:14px;
  }
  .site-header .dropdown-item:hover{
    background:rgba(255,255,255,.06);
    color:#fff;
  }
  .brand-logo{
    display:inline-flex;
    align-items:center;
    gap:12px;
    font-size:22px;
    font-weight:800;
    color:var(--text-main);
    letter-spacing:.3px;
  }
  .brand-logo:hover{color:var(--text-main)}
  .brand-mark{
    width:36px;height:36px;
    border-radius:10px;
    background:linear-gradient(135deg,#3A7BFF 0%,#1E5FEF 100%);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:800;
    color:#fff;
    box-shadow:0 0 18px rgba(58,123,255,.4),inset 0 1px 0 rgba(255,255,255,.2);
  }
  .brand-text em{
    font-style:normal;
    color:var(--ice);
    margin-left:0px;
  }
  .brand-text{font-weight:800}
  .nav-links{
    list-style:none;
    display:flex;
    align-items:center;
    margin-bottom:0;
    padding-left:0;
    gap:2px;
  }
  .nav-cta{
    margin-left:8px;
    height:42px;
    padding:0 22px;
    display:inline-flex;
    align-items:center;
    gap:8px;
    border-radius:var(--radius-sm);
    font-weight:600;
  }
  .btn-brand-main{
    background:linear-gradient(135deg,var(--signal-blue-2),var(--signal-blue));
    border:none;
    color:#fff;
    box-shadow:0 0 20px rgba(58,123,255,.3);
    transition:transform .2s ease,box-shadow .2s ease,filter .2s;
    border-radius:var(--radius-sm);
    font-weight:600;
  }
  .btn-brand-main:hover{
    color:#fff;
    filter:brightness(1.1);
    transform:translateY(-1px);
    box-shadow:0 0 32px rgba(58,123,255,.55);
  }
  .btn-brand-main:active{
    transform:translateY(1px);
    box-shadow:0 0 12px rgba(58,123,255,.3);
    filter:brightness(.95);
  }
  .navbar-toggler{
    border:1px solid var(--glass-stroke);
    background:rgba(255,255,255,.05);
    border-radius:8px;
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:var(--text-main);
    font-size:18px;
  }
  .navbar-toggler:focus{box-shadow:none;outline:2px solid rgba(58,123,255,.5)}
  .mobile-panel{
    border-top:1px solid rgba(160,200,255,.1);
    margin-top:10px;
    padding-top:6px;
    background:rgba(6,12,28,.92);
    border-radius:0 0 var(--radius-md) var(--radius-md);
  }
  .mobile-panel .nav-links{
    flex-direction:column;
    align-items:stretch;
  }
  .mobile-panel .nav-link{
    padding:12px 14px !important;
    border-radius:10px;
  }
  .mobile-menu{
    gap:10px;
  }
  .mobile-menu .btn-brand-main.btn-sm{
    height:40px;
    padding:0 14px;
    font-size:14px;
    border-radius:8px;
  }
  .mobile-menu .btn-brand-main.btn-sm i{font-size:14px}

  /* ===== Hero ===== */
  .section-hero{
    position:relative;
    padding:clamp(48px,7vw,100px) 0 56px;
    background:linear-gradient(200deg,rgba(45,212,191,.07),transparent 40%),url('/assets/images/backpic/back-1.webp') no-repeat right top/cover;
    isolation:isolate;
  }
  .section-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(6,12,28,.94) 0%,rgba(6,12,28,.72) 55%,rgba(6,12,28,.45) 100%);
    z-index:-1;
  }
  .hero-content{
    position:relative;
    z-index:1;
  }
  .hero-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    background:rgba(45,212,191,.1);
    border:1px solid rgba(45,212,191,.25);
    color:var(--ice);
    padding:6px 16px;
    border-radius:999px;
    font-size:14px;
    font-weight:600;
  }
  .page-hero-title{
    font-size:clamp(28px,3.5vw,44px);
    font-weight:800;
    line-height:1.25;
    margin:24px 0 16px;
    letter-spacing:.3px;
  }
  .page-hero-title .grad-text{
    background:linear-gradient(90deg,#3A7BFF,#2DD4BF);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
  }
  .page-hero-lead{
    font-size:17px;
    color:var(--text-sub);
    max-width:640px;
    line-height:1.85;
  }
  .section-hero .glass-data{
    margin-top:32px;
    display:flex;
    flex-wrap:wrap;
    gap:16px;
  }
  .glass-mini-card{
    background:rgba(255,255,255,.06);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid var(--glass-stroke);
    padding:14px 22px;
    border-radius:var(--radius-sm);
    display:flex;
    align-items:center;
    gap:12px;
    font-size:14px;
    color:var(--text-sub);
  }
  .glass-mini-card i{
    color:var(--ice);
    font-size:18px;
  }
  .glass-mini-card strong{
    color:#fff;
    display:block;
    font-size:13px;
    font-weight:600;
  }

  /* ===== Section wrapper ===== */
  .page-section{
    padding:clamp(48px,5vw,72px) 0;
    position:relative;
  }
  .section-head{
    margin-bottom:36px;
    max-width:820px;
  }
  .section-head h2{
    font-size:clamp(22px,2vw,30px);
    font-weight:800;
    margin-bottom:10px;
  }
  .section-head p{
    color:var(--text-sub);
    font-size:15px;
  }

  /* ===== Sticky nav / contents ===== */
  .sticky-nav{
    position:sticky;
    top:100px;
  }
  .dir-card{
    background:rgba(13,24,48,.72);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--glass-stroke);
    border-radius:var(--radius-md);
    padding:14px;
  }
  .dir-card .dir-title{
    font-size:14px;
    font-weight:700;
    color:var(--text-main);
    padding:10px 12px;
    border-bottom:1px solid rgba(255,255,255,.07);
    margin-bottom:6px;
    display:flex;
    align-items:center;
    gap:8px;
  }
  .dir-card .dir-title i{
    color:var(--ice);
  }
  .dir-link{
    display:block;
    font-size:14px;
    color:var(--text-sub);
    font-weight:500;
    padding:9px 12px;
    border-radius:8px;
    transition:background .2s,color .2s;
  }
  .dir-link i{
    width:20px;
    display:inline-block;
    color:var(--signal-blue-2);
    font-size:13px;
  }
  .dir-link:hover{
    background:rgba(255,255,255,.06);
    color:#fff;
  }
  .dir-link.is-active{
    background:rgba(58,123,255,.14);
    color:#fff;
    box-shadow:inset 2px 0 0 var(--signal-blue);
  }
  .side-meta-card{
    background:rgba(13,24,48,.6);
    border:1px solid var(--glass-stroke);
    border-radius:var(--radius-md);
    padding:18px 20px;
    margin-top:18px;
    font-size:13px;
    color:var(--text-weak);
    line-height:1.7;
  }
  .side-meta-card strong{
    color:var(--text-sub);
    display:block;
    margin-bottom:6px;
    font-size:14px;
  }
  .side-meta-card .data-num{
    font-size:22px;
    font-weight:800;
    color:#fff;
    font-variant-numeric:tabular-nums;
  }

  /* ===== Topic anchor panels ===== */
  .topic-anchor{
    scroll-margin-top:110px;
    padding-bottom:clamp(40px,5vw,60px);
  }
  .topic-anchor:last-child{padding-bottom:2px}
  .topic-anchor .anchor-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:36px;
    height:36px;
    border-radius:10px;
    background:linear-gradient(135deg,rgba(58,123,255,.25),rgba(45,212,191,.12));
    border:1px solid rgba(58,123,255,.3);
    color:var(--ice);
    font-weight:800;
    font-size:17px;
    margin-right:12px;
    flex-shrink:0;
  }
  .topic-title-wrap{
    display:flex;
    align-items:center;
  }
  .topic-title-wrap h2{
    font-size:24px;
    font-weight:800;
    margin:0;
    line-height:1.3;
  }
  .topic-title-wrap h2 small{
    display:block;
    font-size:14px;
    color:var(--text-weak);
    font-weight:500;
    margin-top:4px;
    line-height:1.5;
  }
  .topic-card-groups{
    margin-top:24px;
  }
  .topic-body-card{
    background:rgba(255,255,255,.045);
    border:1px solid rgba(160,200,255,.12);
    border-radius:var(--radius-md);
    padding:clamp(20px,3vw,36px);
    margin-top:12px;
  }
  .topic-body-card .lead-topic{
    font-size:16px;
    color:var(--text-sub);
    line-height:1.85;
    border-left:3px solid var(--ice);
    padding-left:18px;
    margin-top:12px;
  }
  .topic-sub-label{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
  }
  .chip-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:rgba(255,255,255,.07);
    border:1px solid rgba(160,200,255,.14);
    border-radius:999px;
    font-size:13px;
    font-weight:600;
    padding:4px 14px;
    color:var(--text-sub);
  }
  .chip-tag .dot{
    width:6px;height:6px;
    border-radius:50%;
    background:var(--ice);
    display:inline-block;
  }
  .chip-tag .dot-warm{
    background:var(--coral);
  }

  .feature-list-group{
    margin-top:16px;
  }
  .feature-line{
    display:flex;
    gap:12px;
    padding:12px 0;
    border-bottom:1px dashed rgba(160,200,255,.1);
    align-items:flex-start;
  }
  .feature-line:last-child{border-bottom:none}
  .feature-line .f-icon{
    width:30px;
    height:30px;
    border-radius:8px;
    background:rgba(45,212,191,.14);
    color:var(--ice);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:13px;
    flex-shrink:0;
  }
  .feature-line .f-text strong{
    display:block;
    font-size:15px;
    font-weight:700;
    color:var(--text-main);
  }
  .feature-line .f-text span,
  .feature-line .f-text p{
    display:block;
    color:var(--text-weak);
    font-size:13px;
    line-height:1.65;
    margin-top:3px;
    margin-bottom:0;
  }

  .picture-embed{
    border-radius:var(--radius-md);
    overflow:hidden;
    border:1px solid var(--glass-stroke);
    margin-top:20px;
  }
  .picture-embed img{
    width:100%;
    height:auto;
    display:block;
    object-fit:cover;
    min-height:200px;
  }
  .picture-caption{
    background:rgba(13,24,48,.8);
    font-size:13px;
    color:var(--text-weak);
    padding:8px 14px;
  }

  /* ===== Bottom CTA ===== */
  .bottom-cta-box{
    margin-top:48px;
    background:rgba(13,24,48,.76);
    border:1px solid var(--glass-stroke);
    border-radius:var(--radius-lg);
    padding:clamp(28px,4vw,48px);
    text-align:center;
    position:relative;
    overflow:hidden;
  }
  .bottom-cta-box::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;height:2px;
    background:linear-gradient(90deg,transparent,rgba(58,123,255,.8),rgba(45,212,191,.8),transparent);
  }
  .bottom-cta-box h3{
    font-size:clamp(20px,2vw,28px);
    font-weight:800;
    margin-bottom:8px;
  }
  .bottom-cta-box p{
    color:var(--text-sub);
    font-size:15px;
    margin-bottom:24px;
  }
  .btn-brand-coral{
    display:inline-flex;
    align-items:center;
    gap:8px;
    justify-content:center;
    height:48px;
    padding:0 26px;
    background:linear-gradient(135deg,#FF5D73,#F0375D);
    color:#fff;
    border:none;
    border-radius:var(--radius-sm);
    font-weight:700;
    font-size:16px;
    transition:transform .2s ease,box-shadow .2s ease,filter .2s;
    position:relative;
  }
  .btn-brand-coral::before{
    content:"";
    position:absolute;
    top:-4px;
    right:-4px;
    width:10px;
    height:10px;
    border-radius:50%;
    background:rgba(255,255,255,.6);
    animation:pulse-dot 2s infinite;
  }
  .btn-brand-coral:hover{
    color:#fff;
    filter:brightness(1.08);
    transform:translateY(-2px);
    box-shadow:0 10px 28px rgba(240,55,93,.4);
  }
  @keyframes pulse-dot{
    0%{opacity:.6;transform:scale(.8)}
    50%{opacity:1;transform:scale(1.4)}
    100%{opacity:.6;transform:scale(.8)}
  }
  .btn-ghost-sub{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 22px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(190,215,255,.3);
    color:var(--text-main);
    border-radius:var(--radius-sm);
    font-weight:600;
    transition:background .2s,border-color .2s,transform .2s;
    margin-left:12px;
  }
  .btn-ghost-sub:hover{
    background:rgba(255,255,255,.08);
    color:#fff;
    border-color:rgba(190,215,255,.5);
  }
  .cta-button-group{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:16px;
    margin-top:20px;
  }
  .cta-button-group .btn-ghost-sub{margin-left:0}
  .tag-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:18px;
    justify-content:center;
  }

  /* ===== Stats row ===== */
  .stats-band{
    background:rgba(255,255,255,.04);
    border:1px solid rgba(160,200,255,.1);
    border-radius:var(--radius-md);
    padding:24px;
    margin:40px 0 8px;
  }
  .stats-band .stat-block{
    text-align:center;
    padding:8px 4px;
  }
  .stats-band .stat-number{
    display:block;
    font-size:30px;
    font-weight:800;
    color:#fff;
    font-variant-numeric:tabular-nums;
    line-height:1.2;
  }
  .stats-band .stat-number em{
    font-style:normal;
    color:var(--ice);
    font-size:20px;
    font-weight:800;
  }
  .stats-band .stat-text{
    font-size:13px;
    color:var(--text-weak);
    margin-top:4px;
  }

  /* ===== Grid / cards ===== */
  .grid-gap{gap:18px}
  .topic-card{
    background:var(--glass-light);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--glass-stroke);
    border-radius:var(--radius-md);
    padding:18px 20px;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    height:100%;
  }
  .topic-card:hover{
    transform:translateY(-3px);
    border-color:rgba(58,123,255,.35);
    box-shadow:var(--shadow-card-hover);
  }
  .topic-card .card-icon{
    width:44px;
    height:44px;
    border-radius:10px;
    background:rgba(58,123,255,.18);
    border:1px solid rgba(58,123,255,.3);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:17px;
    color:var(--signal-blue-2);
    margin-bottom:14px;
  }
  .topic-card h3{
    font-size:17px;
    font-weight:700;
    margin-bottom:7px;
  }
  .topic-card p{
    font-size:14px;
    color:var(--text-sub);
    line-height:1.6;
  }
  .topic-card .link-go{
    font-size:14px;
    font-weight:600;
    color:var(--ice);
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:6px;
    cursor:pointer;
  }

  /* ===== Footer ===== */
  .site-footer{
    background:#050A17;
    border-top:1px solid rgba(160,200,255,.08);
    padding:52px 0 20px;
    position:relative;
    z-index:2;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.3fr;
    gap:36px;
    margin-bottom:42px;
  }
  .footer-brand-logo{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:21px;
    font-weight:800;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-brand-logo .brand-mark{
    width:32px;
    height:32px;
    font-size:16px;
    border-radius:8px;
  }
  .footer-about p{
    font-size:14px;
    color:var(--text-weak);
    line-height:1.75;
    margin-top:12px;
    max-width:320px;
  }
  .footer-grid h4{
    font-size:15px;
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-links{
    list-style:none;
    padding:0;
    margin:0;
  }
  .footer-links li{
    margin-bottom:8px;
    font-size:14px;
  }
  .footer-links a{
    color:var(--text-sub);
    transition:color .2s,padding-left .2s;
  }
  .footer-links a:hover{
    color:var(--ice);
    padding-left:3px;
  }
  .footer-help{
    background:rgba(255,255,255,.03);
    border-radius:12px;
    border:1px solid rgba(160,200,255,.08);
    padding:16px;
    display:flex;
    flex-direction:column;
    gap:8px;
  }
  .footer-help strong{
    font-size:14px;
    font-weight:600;
    color:var(--text-main);
    display:flex;
    align-items:flex-start;
    gap:8px;
  }
  .footer-help strong i{color:var(--ice);margin-top:4px;font-size:14px}
  .footer-help span{
    font-size:13px;
    color:var(--text-weak);
    line-height:1.7;
  }
  .footer-bottom{
    border-top:1px solid rgba(160,200,255,.07);
    padding-top:20px;
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:12px;
    color:var(--text-weak);
    font-size:13px;
  }
  .footer-bottom .media-note{
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .footer-bottom .media-note i{
    color:var(--text-weak);
    font-size:13px;
  }

  /* ===== Responsive ===== */
  @media (max-width:991.98px){
    .section-hero{
      background:linear-gradient(200deg,rgba(6,12,28,.88),rgba(6,12,28,.8)),url('/assets/images/backpic/back-1.webp') no-repeat center/cover;
    }
    .footer-grid{
      grid-template-columns:1fr 1fr;
      gap:24px;
    }
    .dir-card{position:static}
    .topic-title-wrap h2{font-size:20px}
  }
  @media (max-width:767.98px){
    body{font-size:15px}
    .site-header{padding:10px 0}
    .brand-logo{font-size:19px}
    .brand-mark{width:32px;height:32px;font-size:15px;border-radius:8px}
    .page-hero-title{font-size:27px}
    .section-head h2{font-size:22px}
    .footer-grid{
      grid-template-columns:1fr;
      gap:26px;
      margin-bottom:32px;
    }
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .topic-title-wrap{flex-wrap:nowrap}
    .topic-title-wrap h2 small{font-size:13px}
    .topic-body-card{padding:20px}
  }
  @media (max-width:520px){
    .nav-cta{display:none}
    .mobile-menu .btn-brand-main.btn-sm{
      height:40px;
      font-size:13px;
    }
    .mobile-menu .btn-brand-main.btn-sm span{display:none}
    .mobile-menu .btn-brand-main.btn-sm i{font-size:16px}
    .container{padding-left:16px;padding-right:16px}
  }
  @media (max-width:380px){
    .section-hero .glass-data{flex-direction:column}
  }

/* roulang page: category3 */
:root {
            --bg-body: #060C1C;
            --bg-deep: #040712;
            --bg-panel: #0D1830;
            --bg-raised: #101E3D;
            --glass: rgba(255, 255, 255, 0.05);
            --glass-heavy: rgba(255, 255, 255, 0.09);
            --stroke: rgba(160, 200, 255, 0.14);
            --stroke-strong: rgba(160, 200, 255, 0.26);
            --primary: #3A7BFF;
            --primary-rgb: 58, 123, 255;
            --ice: #2DD4BF;
            --coral: #FF5D73;
            --text-strong: #EDF3FF;
            --text-body: #C4D2EC;
            --text-secondary: #A8B8D6;
            --text-weak: #6F83A8;
            --radius-lg: 20px;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 32px rgba(2, 8, 24, 0.35);
            --shadow-float: 0 28px 64px rgba(2, 8, 24, 0.55);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background:
                radial-gradient(1100px 500px at 75% -10%, rgba(58, 123, 255, 0.13), transparent 60%),
                radial-gradient(800px 420px at 8% 0%, rgba(45, 212, 191, 0.08), transparent 55%),
                linear-gradient(155deg, #060C1C 0%, #0C1629 48%, #070D1A 100%) fixed;
            -webkit-font-smoothing: antialiased;
        }

        body.topic-body,
        body {
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        button,
        input {
            font-family: inherit;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-strong);
            line-height: 1.25;
            font-weight: 700;
        }

        p {
            margin: 0 0 1em;
        }

        .container {
            max-width: 1320px;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1060;
            background: rgba(5, 11, 26, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(160, 200, 255, 0.10);
        }

        .site-header .navbar {
            min-height: 72px;
            padding: 0;
        }

        .site-header .container {
            align-items: center;
            display: flex;
            flex-wrap: wrap;
            min-height: 72px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--text-strong);
            text-decoration: none;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            display: inline-grid;
            place-items: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            border-radius: 10px;
            background: linear-gradient(145deg, #2E8FFF, #1E5FEF);
            box-shadow: 0 0 20px rgba(58, 123, 255, 0.38);
            border: 1px solid rgba(255, 255, 255, 0.14);
        }

        .brand-text {
            display: inline-flex;
            align-items: baseline;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .01em;
            color: var(--text-strong);
            white-space: nowrap;
        }

        .brand-text em {
            font-style: normal;
            color: var(--ice);
            margin-left: 2px;
        }

        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            align-items: center;
            gap: 4px;
        }

        .nav-links .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 15px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            transition: background .2s, color .2s;
        }

        .nav-links .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--ice);
            transform: translateX(-50%);
            transition: width .25s ease;
        }

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

        .nav-links .nav-link:hover::after,
        .nav-links .nav-link.active::after {
            width: 18px;
        }

        .nav-links .nav-link.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.07);
        }

        .btn {
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: all .22s ease;
        }

        .btn-brand-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 132px;
            height: 44px;
            padding: 0 22px;
            color: #fff;
            background: linear-gradient(135deg, #2E8FFF, #1E5FEF);
            border: 0;
            border-radius: 10px;
            box-shadow: 0 0 20px rgba(58, 123, 255, 0.34);
        }

        .btn-brand-main:hover {
            color: #fff;
            box-shadow: 0 0 32px rgba(58, 123, 255, 0.58);
            transform: translateY(-1px);
        }

        .btn-brand-main:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(58, 123, 255, 0.3);
        }

        .btn-brand-main:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.35), 0 0 28px rgba(58, 123, 255, 0.45);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 128px;
            height: 46px;
            padding: 0 22px;
            color: #DCEBFF;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(190, 215, 255, 0.3);
            border-radius: 10px;
        }

        .btn-ghost:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(190, 215, 255, 0.5);
        }

        .btn-sm-brand,
        .btn-brand-main.btn-sm {
            min-width: 0;
            height: 42px;
            padding: 0 16px;
            font-size: 14px;
        }

        .nav-cta {
            white-space: nowrap;
        }

        .mobile-menu {
            gap: 8px;
        }

        .mobile-menu .btn-brand-main {
            height: 42px;
            padding: 0 16px;
            min-width: 0;
        }

        .navbar-toggler {
            color: #fff;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(160, 200, 255, 0.2);
            border-radius: 10px;
            padding: 0;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.28);
        }

        .mobile-panel {
            border-top: 1px solid rgba(160, 200, 255, 0.1);
            margin-top: 0;
            padding-top: 6px;
        }

        .mobile-panel .nav-links {
            display: flex;
            flex-direction: column;
            align-items: stretch;
        }

        .mobile-panel .nav-links .nav-link {
            padding: 12px 8px;
            font-size: 16px;
        }

        /* ===== Hero Breadcrumb ===== */
        .topic-hero {
            position: relative;
            padding: 90px 0 64px;
            background:
                linear-gradient(120deg, rgba(6, 12, 28, 0.92), rgba(9, 18, 38, 0.78)),
                url('/assets/images/backpic/back-1.webp') center / cover no-repeat,
                #0B1428;
            border-bottom: 1px solid rgba(160, 200, 255, 0.12);
            overflow: hidden;
        }

        .topic-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image:
                radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 24px 24px;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 80%);
        }

        .topic-hero .container {
            position: relative;
            z-index: 1;
            max-width: 980px;
        }

        .breadcrumb-position {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 26px;
        }

        .breadcrumb-position a {
            color: var(--text-secondary);
        }

        .breadcrumb-position a:hover {
            color: var(--ice);
        }

        .breadcrumb-position .sep {
            opacity: .5;
        }

        .hero-kicker,
        .eyebrow-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: .08em;
            color: var(--ice);
            margin-bottom: 18px;
            font-weight: 600;
        }

        .hero-kicker::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--ice);
            opacity: .7;
        }

        .topic-hero h1 {
            font-size: clamp(38px, 5vw, 58px);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 20px;
            color: #fff;
            line-height: 1.15;
            text-shadow: 0 8px 30px rgba(2, 8, 24, 0.35);
        }

        .topic-hero h1 .hero-brand {
            color: var(--ice);
        }

        .topic-hero .hero-lead {
            max-width: 760px;
            color: #C4D2EC;
            font-size: clamp(16px, 1.7vw, 18px);
            line-height: 1.9;
            margin-bottom: 30px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 13px;
            color: #BCD0EF;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(160, 200, 255, 0.2);
            border-radius: 999px;
        }

        .hero-tag i {
            color: var(--ice);
        }

        /* ===== Topic Layout ===== */
        .topic-main {
            padding: clamp(64px, 7vw, 96px) 0;
        }

        .topic-grid {
            display: grid;
            grid-template-columns: 272px minmax(0, 1fr);
            gap: 40px;
            align-items: start;
        }

        .topic-sidebar {
            position: sticky;
            top: 100px;
            background: rgba(13, 24, 48, 0.76);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 22px;
            border: 1px solid rgba(160, 200, 255, 0.12);
            border-radius: 20px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(160, 200, 255, 0.12);
            font-weight: 700;
        }

        .sidebar-title i {
            color: var(--ice);
        }

        .side-nav {
            list-style: none;
            margin: 0 0 18px;
            padding: 0;
        }

        .side-nav li {
            margin-bottom: 4px;
        }

        .side-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 10px;
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-body);
            transition: background .2s, color .2s, padding-left .2s;
        }

        .side-nav a .num {
            color: var(--text-weak);
            font-size: 12px;
            width: 20px;
            font-variant-numeric: tabular-nums;
        }

        .side-nav a:hover {
            background: rgba(58, 123, 255, 0.1);
            color: #fff;
            padding-left: 14px;
        }

        .side-nav a:hover .num {
            color: var(--ice);
        }

        .side-cta {
            padding-top: 16px;
            border-top: 1px solid rgba(160, 200, 255, 0.1);
            text-align: center;
        }

        .side-cta .btn-brand-main {
            width: 100%;
            min-width: 0;
            height: 44px;
            font-size: 14px;
        }

        .topic-doc {
            display: flex;
            flex-direction: column;
            gap: 28px;
            min-width: 0;
        }

        .topic-panel {
            background: linear-gradient(165deg, rgba(16, 30, 61, 0.72), rgba(13, 24, 48, 0.9));
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(160, 200, 255, 0.12);
            border-radius: 20px;
            padding: clamp(24px, 4vw, 46px);
            box-shadow: 0 12px 32px rgba(2, 8, 24, 0.25);
            scroll-margin-top: 108px;
        }

        .panel-head {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }

        .panel-no {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .06em;
            color: var(--ice);
            background: rgba(45, 212, 191, 0.1);
            border: 1px solid rgba(45, 212, 191, 0.18);
            border-radius: 999px;
            padding: 4px 12px;
            white-space: nowrap;
            flex: 0 0 auto;
            margin-top: 4px;
        }

        .panel-head h2 {
            font-size: clamp(22px, 2.4vw, 30px);
            font-weight: 800;
            margin: 0;
            letter-spacing: -0.01em;
            line-height: 1.35;
        }

        .panel-intro {
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.9;
            max-width: 820px;
            margin-bottom: 0;
        }

        /* Overview */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 30px;
        }

        .overview-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(160, 200, 255, 0.09);
            border-radius: 16px;
            padding: 24px 20px 20px;
            transition: background .25s, border .25s, transform .25s;
            position: relative;
        }

        .overview-card::before {
            content: "";
            position: absolute;
            inset: 0 auto auto 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, rgba(58, 123, 255, 0.5), transparent 60%);
            border-radius: 16px 16px 0 0;
        }

        .overview-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(160, 200, 255, 0.2);
            transform: translateY(-3px);
        }

        .overview-card i {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 17px;
            background: rgba(58, 123, 255, 0.15);
            color: #98C0FF;
            margin-bottom: 14px;
        }

        .overview-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-strong);
        }

        .overview-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
            margin: 0;
        }

        /* Fields */
        .fields-wrap {
            margin-top: 26px;
        }

        .field-row {
            display: grid;
            grid-template-columns: 52px 1fr 220px;
            gap: 18px;
            padding: 22px 4px;
            border-bottom: 1px solid rgba(160, 200, 255, 0.08);
        }

        .field-row:first-child {
            padding-top: 0;
        }

        .field-row:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .field-index {
            font-size: 14px;
            font-weight: 800;
            color: var(--ice);
            font-variant-numeric: tabular-nums;
            padding-top: 3px;
        }

        .field-main h3 {
            font-size: 18px;
            margin: 0 0 6px;
            font-weight: 700;
            color: var(--text-strong);
        }

        .field-main p {
            font-size: 15px;
            margin: 0;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .field-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-content: flex-start;
            justify-content: flex-end;
            padding-top: 2px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            height: 26px;
            padding: 0 12px;
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(160, 200, 255, 0.12);
            border-radius: 999px;
            line-height: 1;
        }

        .chip.ice {
            color: var(--ice);
            border-color: rgba(45, 212, 191, 0.24);
        }

        .chip.cloud {
            color: #A8C2EC;
            border-color: rgba(100, 160, 255, 0.2);
            background: rgba(58, 123, 255, 0.08);
        }

        /* Construction section */
        .craft-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 32px;
            margin-top: 22px;
            align-items: center;
        }

        .craft-steps {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .step-item {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 14px;
            padding: 13px 0;
        }

        .step-num {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(58, 123, 255, 0.13);
            border: 1px solid rgba(58, 123, 255, 0.19);
            color: #9BC1FF;
            font-weight: 800;
            font-size: 15px;
        }

        .step-item h4 {
            font-size: 16px;
            margin: 0 0 4px;
            color: var(--text-strong);
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        .craft-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(160, 200, 255, 0.16);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4 / 3;
            background-color: #0B1428;
        }

        .craft-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .craft-media .media-mask {
            position: absolute;
            inset: auto 0 0 0;
            padding: 14px 16px;
            background: linear-gradient(transparent, rgba(5, 10, 25, 0.9));
        }

        .craft-media .media-mask span {
            font-size: 13px;
            color: var(--ice);
            font-weight: 600;
        }

        .craft-media::before {
            content: "专题素材";
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 3px 10px;
            font-size: 11px;
            letter-spacing: .05em;
            color: #fff;
            background: rgba(255, 93, 115, 0.88);
            border-radius: 999px;
        }

        /* Pace */
        .pace-track {
            margin-top: 22px;
            padding-left: 2px;
        }

        .pace-row {
            position: relative;
            display: grid;
            grid-template-columns: 110px 1fr;
            gap: 20px;
            padding: 0 0 26px 28px;
        }

        .pace-row:last-child {
            padding-bottom: 0;
        }

        .pace-row::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: -4px;
            width: 2px;
            background: linear-gradient(180deg, rgba(58, 123, 255, 0.6), rgba(45, 212, 191, 0.18));
        }

        .pace-row:last-child::before {
            display: none;
        }

        .pace-row::after {
            content: "";
            position: absolute;
            left: 3px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #cfe0ff;
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.2);
        }

        .pace-phase {
            color: var(--ice);
            font-size: 13px;
            font-weight: 700;
            padding-top: 3px;
        }

        .pace-body h3 {
            font-size: 17px;
            margin: 0 0 5px;
            color: var(--text-strong);
        }

        .pace-body p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            max-width: 620px;
        }

        /* Featured */
        .featured-grid {
            display: grid;
            grid-template-columns: 1.25fr 0.85fr;
            gap: 18px;
            margin-top: 22px;
        }

        .feature-card {
            position: relative;
            border-radius: 18px;
            overflow: hidden;
            background-color: #091122;
            border: 1px solid rgba(160, 200, 255, 0.14);
            min-height: 230px;
        }

        .feature-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .feature-card:hover img {
            transform: scale(1.02);
        }

        .feature-card .feature-body {
            position: absolute;
            inset: auto 0 0 0;
            padding: 22px 22px 20px;
            background: linear-gradient(180deg, rgba(4, 9, 20, 0.15), rgba(4, 9, 20, 0.92) 68%);
        }

        .feature-card .fc-tag {
            display: inline-block;
            font-size: 12px;
            color: #9FC9FF;
            background: rgba(10, 18, 36, 0.6);
            border: 1px solid rgba(120, 170, 255, 0.25);
            padding: 4px 10px;
            border-radius: 999px;
            margin-bottom: 10px;
            backdrop-filter: blur(8px);
        }

        .feature-card h3 {
            font-size: 19px;
            line-height: 1.45;
            margin: 0 0 8px;
            color: #fff;
            font-weight: 800;
        }

        .feature-card p {
            font-size: 14px;
            color: #BBCAEA;
            margin: 0 0 14px;
        }

        .feature-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .feature-meta a {
            color: #DBE9FF;
            border-bottom: 1px solid rgba(45, 212, 191, 0.5);
            padding-bottom: 1px;
        }

        .feature-meta a:hover {
            color: var(--ice);
            border-color: var(--ice);
        }

        .feature-card.mini .feature-body {
            padding: 17px;
        }

        .feature-card.mini h3 {
            font-size: 16px;
        }

        .feature-card.mini p {
            font-size: 13px;
            margin-bottom: 10px;
        }

        /* FAQ override */
        .faq-zone {
            margin-top: 0;
        }

        .topic-panel.faq-panel {
            padding-bottom: 16px;
        }

        .accordion-topic .accordion-item {
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(160, 200, 255, 0.1);
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .accordion-topic .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-topic .accordion-button {
            background: transparent;
            color: var(--text-strong);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            line-height: 1.5;
            border: 0;
            box-shadow: none;
        }

        .accordion-topic .accordion-button:not(.collapsed) {
            color: #fff;
            background: rgba(58, 123, 255, 0.07);
        }

        .accordion-topic .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.25);
        }

        .accordion-topic .accordion-button::after {
            content: "+";
            background: none;
            width: auto;
            height: auto;
            margin-left: auto;
            font-size: 22px;
            font-weight: 400;
            color: var(--ice);
            line-height: 1;
            font-family: var(--font-stack);
            transition: transform .2s ease;
        }

        .accordion-topic .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: none;
            color: var(--text-strong);
        }

        .accordion-topic .accordion-body {
            padding: 0 20px 18px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid rgba(160, 200, 255, 0.06);
        }

        /* Reminder / CTA */
        .reminder-block {
            padding: clamp(56px, 7vw, 92px) 0;
            position: relative;
        }

        .reminder-block .container {
            position: relative;
            z-index: 1;
        }

        .remind-panel {
            position: relative;
            background:
                linear-gradient(115deg, rgba(8, 17, 34, 0.88), rgba(13, 24, 48, 0.72)),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            border: 1px solid rgba(160, 200, 255, 0.16);
            border-radius: 22px;
            padding: clamp(26px, 4.5vw, 52px);
            overflow: hidden;
            box-shadow: 0 28px 70px rgba(2, 8, 24, 0.45);
        }

        .remind-panel::before {
            content: "";
            position: absolute;
            inset: auto auto -60px -40px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(58, 123, 255, 0.22), transparent 68%);
            pointer-events: none;
        }

        .remind-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            position: relative;
        }

        .remind-copy {
            flex: 1 1 340px;
            max-width: 580px;
        }

        .remind-copy h2 {
            font-size: clamp(25px, 2.6vw, 34px);
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }

        .remind-copy p {
            color: var(--text-body);
            margin: 0;
            line-height: 1.85;
        }

        .remind-form {
            flex: 1 1 360px;
            max-width: 460px;
        }

        .remind-form .form-wrap {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .remind-form .form-control {
            flex: 1 1 220px;
            height: 48px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(170, 200, 255, 0.2);
            border-radius: 10px;
            color: #fff;
            padding: 0 14px;
            font-size: 15px;
            box-shadow: none;
        }

        .remind-form .form-control::placeholder {
            color: #8298BC;
        }

        .remind-form .form-control:focus {
            background: rgba(255, 255, 255, 0.11);
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.22);
            color: #fff;
        }

        .remind-note {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-weak);
            font-size: 13px;
            margin-top: 12px;
        }

        .remind-note i {
            color: var(--ice);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(160, 200, 255, 0.12);
            padding: 56px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
            gap: 32px;
            margin-bottom: 38px;
        }

        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand-logo .brand-mark {
            width: 32px;
            height: 32px;
            font-size: 15px;
            flex-basis: 32px;
        }

        .footer-about p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            max-width: 380px;
        }

        .site-footer h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: .06em;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: var(--ice);
            padding-left: 4px;
        }

        .footer-help {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-help strong {
            color: #DCE9FF;
            font-size: 14px;
            font-weight: 600;
        }

        .footer-help span {
            color: var(--text-weak);
            font-size: 13px;
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(160, 200, 255, 0.09);
            color: var(--text-weak);
            font-size: 13px;
        }

        .footer-bottom .media-note {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .topic-grid {
                grid-template-columns: 240px minmax(0, 1fr);
                gap: 24px;
            }

            .field-row {
                grid-template-columns: 46px 1fr 180px;
                gap: 14px;
            }

            .craft-layout {
                grid-template-columns: minmax(0, 1fr) 300px;
                gap: 24px;
            }
        }

        @media (max-width: 991.98px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }

            .topic-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr;
                gap: 0;
            }

            .sidebar-title {
                margin-bottom: 12px;
            }

            .side-nav {
                display: flex;
                flex-wrap: wrap;
                gap: 4px;
                margin-bottom: 0;
            }

            .side-nav li {
                margin: 0;
            }

            .side-cta {
                display: none;
            }

            .craft-layout {
                grid-template-columns: 1fr;
            }

            .craft-media {
                max-width: 520px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .field-row {
                grid-template-columns: 40px 1fr;
            }

            .field-tags {
                justify-content: flex-start;
                padding-left: 54px;
            }
        }

        @media (max-width: 767.98px) {
            .topic-hero {
                padding: 64px 0 48px;
            }

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

            .field-main h3 {
                font-size: 17px;
            }

            .pace-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }

            .remind-form .form-wrap {
                flex-direction: column;
            }

            .remind-form .btn-brand-main {
                width: 100%;
            }

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

            .footer-bottom {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 17px;
            }

            .brand-text em {
                display: none;
            }

            .nav-cta i {
                margin: 0;
            }

            .hero-kicker {
                letter-spacing: 0;
            }

            .topic-panel {
                padding: 20px 16px;
                border-radius: 16px;
            }

            .panel-head {
                flex-direction: column;
                gap: 8px;
            }

            .panel-no {
                align-self: flex-start;
            }

            .field-row {
                grid-template-columns: 1fr;
                gap: 6px;
                padding: 16px 0;
            }

            .field-index {
                padding-top: 0;
            }

            .field-tags {
                padding-left: 0;
                margin-top: 6px;
            }

            .step-item {
                grid-template-columns: 34px 1fr;
            }

            .step-num {
                width: 34px;
                height: 34px;
                font-size: 13px;
            }

            .feature-card {
                min-height: 200px;
            }

            .feature-body,
            .feature-card.mini .feature-body {
                padding: 16px;
            }

            .pace-row {
                padding-left: 20px;
            }

            .accordion-topic .accordion-button {
                font-size: 14px;
                padding: 14px 14px;
            }

            .accordion-topic .accordion-body {
                padding-left: 14px;
                padding-right: 14px;
            }

            .topic-hero .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

/* roulang page: category4 */
:root {
  --bg-deep: #060C1C;
  --bg-panel: #0D1830;
  --signal-blue: #3A7BFF;
  --ice: #2DD4BF;
  --coral: #FF5D73;
  --text-main: #EDF3FF;
  --text-sub: #A8B8D6;
  --text-weak: #6F83A8;
  --glass-light: rgba(255, 255, 255, 0.05);
  --glass-mid: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(160, 200, 255, 0.16);
  --radius-card: 16px;
  --radius-btn: 10px;
  --transition: all 0.25s ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(circle at 18% 0%, rgba(58, 123, 255, 0.12), transparent 38%),
    linear-gradient(180deg, #060C1C 0%, #0C1629 100%);
  background-color: #060C1C;
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a {
  color: var(--signal-blue);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: #6ea4ff;
}
img {
  max-width: 100%;
}
h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
}

.container {
  max-width: 1320px;
}

.btn {
  border-radius: var(--radius-btn);
  font-weight: 600;
  transition: var(--transition);
}
.btn:focus,
.form-control:focus,
.form-select:focus {
  box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.22);
}

.btn-brand-main {
  background: linear-gradient(135deg, #2E8FFF 0%, #3A7BFF 60%, #1E5FEF 100%);
  border: 0;
  color: #fff;
  min-height: 44px;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-btn);
  box-shadow: 0 0 20px rgba(58, 123, 255, 0.35);
  line-height: 1.2;
}
.btn-brand-main:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(58, 123, 255, 0.55);
}
.btn-brand-main:active {
  transform: translateY(1px);
  box-shadow: 0 0 12px rgba(58, 123, 255, 0.4);
}
.btn-brand-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(190, 215, 255, 0.3);
  color: var(--text-main);
  min-height: 44px;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-btn);
  line-height: 1.2;
}
.btn-brand-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(190, 215, 255, 0.55);
  color: #fff;
  transform: translateY(-1px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(6, 12, 28, 0.76);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(144, 180, 255, 0.14);
}
.site-header .navbar {
  min-height: 72px;
  padding: 0.6rem 0;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.brand-logo:hover {
  color: #fff;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2E8FFF, #1E5FEF);
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 0 20px rgba(58, 123, 255, 0.4);
}
.brand-text em {
  font-style: normal;
  color: var(--ice);
}
.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
}
.nav-links .nav-link {
  color: var(--text-sub);
  padding: 0.55rem 0.85rem;
  font-weight: 500;
  border-radius: 10px;
  position: relative;
}
.nav-links .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}
.nav-links .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
}
.nav-links .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 2px;
  height: 2px;
  border-radius: 999px;
  background: var(--ice);
}
.nav-cta {
  white-space: nowrap;
}
.mobile-menu {
  align-items: center;
  gap: 10px;
}
.mobile-menu .navbar-toggler {
  border: 1px solid rgba(190, 215, 255, 0.22);
  padding: 0.5rem 0.75rem;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}
.mobile-panel {
  background: rgba(7, 14, 30, 0.94);
  border: 0;
  border-top: 1px solid rgba(144, 180, 255, 0.1);
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}
.mobile-panel .nav-links {
  display: block;
}
.mobile-panel .nav-link {
  display: block;
  padding: 0.75rem 0.8rem;
  color: var(--text-sub);
}
.mobile-panel .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.mobile-panel .nav-link.active::after {
  display: none;
}

.site-main {
  position: relative;
}
.site-main::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 80% 10%, rgba(45, 212, 191, 0.08), transparent 28%),
    radial-gradient(circle at 8% 44%, rgba(58, 123, 255, 0.1), transparent 34%),
    linear-gradient(rgba(160, 200, 255, 0.035) 1px, transparent 1px);
  background-size: auto, auto, 100% 90px;
}
.site-main > section,
.site-main > div {
  position: relative;
  z-index: 1;
}

.section {
  padding: clamp(64px, 8vw, 116px) 0;
}
.section-head {
  max-width: 820px;
  margin-bottom: 2.8rem;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ice);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.section-label::before {
  content: "";
  width: 24px;
  height: 2px;
  border-radius: 999px;
  background: var(--ice);
  display: inline-block;
}
.section-title {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 0.8rem;
}
.section-desc {
  color: var(--text-sub);
  font-size: 16px;
  margin-bottom: 0;
}

.page-hero {
  position: relative;
  padding: clamp(54px, 7vw, 96px) 0 clamp(48px, 6vw, 76px);
  min-height: 360px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(160, 200, 255, 0.1);
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 12, 28, 0.94) 0%, rgba(9, 17, 35, 0.82) 48%, rgba(13, 24, 47, 0.72) 100%),
    url("/assets/images/backpic/back-3.webp") center / cover no-repeat;
}
.page-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--ice), transparent 60%);
  opacity: 0.7;
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb-custom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 1.6rem;
}
.breadcrumb-custom a {
  color: var(--text-sub);
}
.breadcrumb-custom a:hover {
  color: #fff;
}
.breadcrumb-custom .sep {
  color: var(--text-weak);
  opacity: 0.6;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(45, 212, 191, 0.28);
  color: var(--ice);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 1.1rem;
}
.hero-eyebrow i {
  font-size: 12px;
}
.page-hero h1 {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  color: #fff;
  margin: 0 0 1rem;
  letter-spacing: 0.01em;
}
.page-hero .hero-lead {
  color: var(--text-sub);
  font-size: clamp(16px, 1.5vw, 18px);
  max-width: 780px;
  margin-bottom: 1.4rem;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-tag {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(160, 200, 255, 0.18);
  color: var(--text-sub);
  border-radius: 999px;
  font-size: 13px;
  padding: 5px 14px;
}
.hero-tag i {
  color: var(--ice);
  margin-right: 6px;
}

.help-entry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.help-entry-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(160, 200, 255, 0.18);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 12px 32px rgba(2, 8, 24, 0.35);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  min-height: 260px;
}
.help-entry-card:hover {
  transform: translateY(-3px);
  border-color: rgba(58, 123, 255, 0.45);
  box-shadow: 0 0 0 1px rgba(58, 123, 255, 0.18), 0 24px 60px rgba(2, 8, 24, 0.5);
}
.entry-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(58, 123, 255, 0.2), rgba(45, 212, 191, 0.1));
  border: 1px solid rgba(120, 180, 255, 0.25);
  color: var(--ice);
  font-size: 24px;
  margin-bottom: 20px;
}
.help-entry-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.6rem;
}
.help-entry-card p {
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 1.6rem;
  flex: 1;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.capability-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(160, 200, 255, 0.14);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.capability-card:hover {
  transform: translateY(-3px);
  border-color: rgba(58, 123, 255, 0.4);
  background: rgba(255, 255, 255, 0.075);
}
.capability-card .cap-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(58, 123, 255, 0.14);
  border: 1px solid rgba(58, 123, 255, 0.22);
  color: var(--signal-blue);
  font-size: 18px;
  margin-bottom: 16px;
}
.capability-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}
.capability-card p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.visual-section {
  background: linear-gradient(180deg, rgba(13, 24, 48, 0.35), rgba(6, 12, 28, 0.1));
}
.visual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
  margin-bottom: 56px;
}
.visual-grid:last-child {
  margin-bottom: 0;
}
.visual-media {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(160, 200, 255, 0.18);
  background: #081225;
  box-shadow: 0 24px 60px rgba(2, 8, 24, 0.5);
}
.visual-media img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.visual-text h3 {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.8rem;
}
.visual-text p {
  color: var(--text-sub);
  font-size: 16px;
  margin-bottom: 1.2rem;
}
.visual-text .btn {
  min-width: 132px;
}
.visual-extra-link {
  font-size: 15px;
  font-weight: 600;
}
.accordion-zoty .accordion-item {
  background: #0D1830;
  border: 1px solid rgba(160, 200, 255, 0.16);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(2, 8, 24, 0.2);
}
.accordion-zoty .accordion-item:last-child {
  margin-bottom: 0;
}
.accordion-zoty .accordion-button {
  background: transparent;
  border: 0;
  box-shadow: none;
  color: #fff;
  font-weight: 600;
  padding: 18px 24px;
  display: flex;
  gap: 14px;
  font-size: 16px;
}
.accordion-zoty .accordion-button:not(.collapsed) {
  background: rgba(58, 123, 255, 0.1);
  color: #fff;
}
.accordion-zoty .accordion-button::after {
  display: none;
}
.acc-icon {
  margin-left: auto;
  flex: 0 0 auto;
  color: var(--ice);
  transition: transform 0.3s ease;
  font-size: 15px;
  line-height: inherit;
}
.accordion-zoty .accordion-button:not(.collapsed) .acc-icon {
  transform: rotate(180deg);
}
.accordion-zoty .accordion-body {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.75;
  padding: 0.4rem 2rem 1.8rem 1.5rem;
  border-top: 1px solid rgba(160, 200, 255, 0.1);
  margin-left: 0;
}

.contact-section {
  background:
    radial-gradient(circle at 88% 30%, rgba(45, 212, 191, 0.08), transparent 32%),
    radial-gradient(circle at 10% 70%, rgba(58, 123, 255, 0.12), transparent 36%);
}
.contact-panel {
  background: rgba(13, 24, 48, 0.86);
  border: 1px solid rgba(160, 200, 255, 0.18);
  border-radius: 24px;
  padding: clamp(28px, 4.5vw, 60px);
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  box-shadow: 0 0 0 1px rgba(58, 123, 255, 0.08), 0 24px 60px rgba(2, 8, 24, 0.5);
}
.contact-copy h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  margin-bottom: 1rem;
}
.contact-copy p {
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 1.4rem;
}
.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.contact-list li {
  display: flex;
  gap: 10px;
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 10px;
}
.contact-list li i {
  color: var(--ice);
  margin-top: 5px;
}
.help-form .form-label {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 8px;
  font-weight: 500;
}
.help-form .form-control {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(190, 215, 255, 0.2);
  color: var(--text-main);
  min-height: 46px;
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  font-size: 15px;
}
.help-form .form-control::placeholder {
  color: var(--text-weak);
}
.help-form .form-control:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--signal-blue);
  box-shadow: 0 0 0 4px rgba(58, 123, 255, 0.22);
  color: #fff;
}
.help-form textarea.form-control {
  min-height: 112px;
  resize: vertical;
}
.form-message {
  display: none;
  margin-top: 14px;
  background: rgba(45, 212, 191, 0.1);
  border: 1px solid rgba(45, 212, 191, 0.32);
  color: var(--ice);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
}
.form-message.show {
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-note {
  color: var(--text-weak);
  font-size: 13px;
  margin-top: 12px;
}

.cta-band {
  background: linear-gradient(90deg, rgba(30, 95, 239, 0.16), rgba(45, 212, 191, 0.08)), #0D1830;
  border-radius: 24px;
  padding: clamp(30px, 5vw, 54px);
  text-align: center;
  border: 1px solid rgba(160, 200, 255, 0.16);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  top: -40px;
  left: 20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(58, 123, 255, 0.2), transparent 70%);
  pointer-events: none;
}
.cta-band h2 {
  color: #fff;
  font-size: clamp(22px, 2.8vw, 32px);
  margin-bottom: 0.8rem;
  font-weight: 800;
}
.cta-band p {
  color: var(--text-sub);
  margin-bottom: 1.8rem;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer {
  background: #04070F;
  border-top: 1px solid rgba(160, 200, 255, 0.12);
  padding-top: 68px;
  color: var(--text-sub);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.35fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
}
.footer-about p,
.footer-help {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--text-sub);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover {
  color: #fff;
}
.footer-help {
  display: block;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(160, 200, 255, 0.12);
  border-radius: 14px;
  padding: 16px;
}
.footer-help strong {
  display: block;
  color: var(--text-main);
  margin-bottom: 6px;
  font-size: 14px;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(160, 200, 255, 0.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--text-weak);
  font-size: 13px;
}
.site-footer .footer-bottom .media-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

@supports not ((backdrop-filter: blur(16px)) or (-webkit-backdrop-filter: blur(16px))) {
  .help-entry-card {
    background: rgba(13, 24, 48, 0.94);
  }
  .site-header {
    background: rgba(6, 12, 28, 0.95);
  }
}

@media (max-width: 1199px) {
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .help-entry-card {
    padding: 26px;
  }
  .contact-panel {
    gap: 32px;
  }
}

@media (max-width: 991px) {
  .help-entry-grid,
  .visual-grid {
    grid-template-columns: 1fr;
  }
  .visual-grid {
    gap: 24px;
    margin-bottom: 40px;
  }
  .visual-media img {
    aspect-ratio: 16 / 8;
  }
  .contact-panel {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }
  .help-entry-grid,
  .capability-grid {
    grid-template-columns: 1fr;
  }
  .help-entry-card {
    min-height: 0;
  }
  .visual-media img {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }
  .page-hero {
    min-height: 0;
    padding: 44px 0 40px;
  }
  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    padding-bottom: 32px;
  }
  .contact-panel {
    padding: 22px 18px;
  }
  .cta-band {
    padding: 28px 20px;
  }
  .accordion-zoty .accordion-button {
    padding: 15px 18px;
    font-size: 15px;
  }
}