/* roulang page: index */
:root{
  --bg-void:#07111B;
  --bg-deep:#0B1726;
  --panel:#101F2F;
  --panel-soft:#14293D;
  --marble:#F3F0EA;
  --marble-deep:#EBE6DD;
  --ink:#1F2A35;
  --ink-soft:#53606C;
  --body-text:#D4DCE6;
  --muted:rgba(214,224,236,.64);
  --line:rgba(214,224,236,.12);
  --red:#B23A42;
  --red-deep:#91414A;
  --cyan:#2FD7E6;
  --cyan-soft:#71E7F2;
  --cyan-glow:rgba(47,215,230,.32);
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-deep:0 28px 60px rgba(3,8,14,.42);
  --shadow-card:0 16px 32px rgba(3,8,14,.28);
  --font:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg-void);
  color:var(--body-text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(142,176,211,.32);color:#fff}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px;width:100%}
.grid-container.wide{max-width:1280px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border-radius:999px;
  font-weight:600;
  font-size:15px;
  line-height:1;
  padding:14px 24px;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn svg,.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,rgba(47,215,230,.2),rgba(47,215,230,.06));
  color:#EAFBFF;
  border:1px solid rgba(47,215,230,.45);
  box-shadow:0 0 0 0 rgba(47,215,230,.25),inset 0 1px 0 rgba(255,255,255,.06);
}
.btn-primary:hover{
  transform:translateX(3px);
  box-shadow:0 0 28px rgba(47,215,230,.22),inset 0 1px 0 rgba(255,255,255,.10);
  border-color:rgba(47,215,230,.8);
  color:#fff;
}
.btn-primary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.btn-ghost{
  color:rgba(228,236,245,.82);
  border:1px solid rgba(214,224,236,.18);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{
  border-color:rgba(47,215,230,.45);
  color:#fff;
  transform:translateY(-2px);
}
.btn-ghost:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.btn-light{
  background:#fff;
  color:#101F2F;
  border:1px solid #fff;
}
.btn-light:hover{
  background:var(--marble);
  transform:translateY(-2px);
  box-shadow:0 16px 30px rgba(0,0,0,.16);
}
.btn-sm{padding:10px 18px;font-size:13px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(178,58,66,.14);
  color:#EDB7BC;
  border:1px solid rgba(178,58,66,.3);
  font-size:12px;
  font-weight:500;
}
.tag-marble{background:rgba(178,58,66,.08);border-color:rgba(178,58,66,.24);color:#A4474E}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.kicker::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--red);
  display:block;
}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,17,27,.9);
  backdrop-filter:blur(20px) saturate(1.1);
  -webkit-backdrop-filter:blur(20px) saturate(1.1);
  border-bottom:1px solid rgba(214,224,236,.08);
}
.nav-primary{
  border-bottom:1px solid rgba(214,224,236,.07);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:64px;
  gap:16px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-weight:800;
  font-size:19px;
  color:#fff;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:opacity .2s;
}
.brand:hover{opacity:.86}
.brand-icon{
  width:30px;
  height:30px;
  border-radius:8px;
  background:linear-gradient(135deg,#223C55,#0A1B2B);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(47,215,230,.36);
  color:var(--cyan);
  font-size:14px;
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:8px;
}
.icon-btn{
  width:38px;
  height:38px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--body-text);
  border:1px solid rgba(214,224,236,.13);
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{
  color:#fff;
  border-color:rgba(47,215,230,.5);
  background:rgba(47,215,230,.06);
}
.icon-btn:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.menu-toggle{
  display:none;
  width:38px;
  height:38px;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  color:#fff;
  border:1px solid rgba(214,224,236,.14);
}
.nav-channels{
  position:relative;
}
.nav-channels-inner{
  display:flex;
  align-items:center;
  gap:6px;
  min-height:46px;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-channels-inner::-webkit-scrollbar{display:none}
.channel-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:rgba(214,224,236,.72);
  white-space:nowrap;
  transition:color .2s,background .2s,border-color .2s;
  border:1px solid transparent;
}
.channel-link i{font-size:11px;opacity:.7}
.channel-link:hover{
  color:#fff;
  background:rgba(214,224,236,.06);
}
.channel-link.active{
  color:#fff;
  background:rgba(47,215,230,.1);
  border-color:rgba(47,215,230,.18);
}
.channel-link.active::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 12px var(--cyan);
}
.mobile-tab-panel{
  display:none;
  padding:6px;
  border-top:1px solid rgba(214,224,236,.07);
}
.mobile-tab-panel.open{display:block}

.hero{
  position:relative;
  padding:96px 0 100px;
  overflow:hidden;
  background:
    linear-gradient(100deg,rgba(7,17,27,.96) 0%,rgba(7,17,27,.78) 45%,rgba(7,17,27,.45) 78%,rgba(7,17,27,.62) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-80px;
  width:420px;
  height:420px;
  background:radial-gradient(circle,rgba(47,215,230,.08),transparent 65%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:999px;
  background:rgba(47,215,230,.08);
  border:1px solid rgba(47,215,230,.2);
  color:var(--cyan);
  font-size:13px;
  margin-bottom:22px;
}
.hero-copy h1{
  font-size:50px;
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:800;
  color:#FFFFFF;
  text-wrap:balance;
}
.hero-sub{
  max-width:520px;
  margin-top:18px;
  color:rgba(214,224,236,.78);
  font-size:16px;
}
.hero-cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin-top:40px;
  color:rgba(214,224,236,.55);
  font-size:13px;
  border-top:1px solid rgba(214,224,236,.1);
  padding-top:18px;
  max-width:480px;
}
.hero-trust span{display:inline-flex;align-items:center;gap:7px}
.hero-trust i{color:var(--cyan)}
.hero-panel{
  border-radius:28px;
  padding:28px;
  background:linear-gradient(145deg,rgba(16,31,47,.78),rgba(10,23,36,.72));
  backdrop-filter:blur(16px) saturate(1.1);
  -webkit-backdrop-filter:blur(16px) saturate(1.1);
  border:1px solid rgba(255,255,255,.1);
  box-shadow:0 28px 60px rgba(3,8,14,.35),inset 0 1px 0 rgba(255,255,255,.04);
}
.glass-title{
  display:flex;
  align-items:center;
  gap:9px;
  color:#fff;
  font-size:13px;
  letter-spacing:.12em;
  font-weight:700;
  text-transform:uppercase;
  margin-bottom:18px;
}
.glass-title i{color:var(--cyan)}
.quick-select-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
}
.quick-select{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  background:rgba(214,224,236,.05);
  border:1px solid rgba(214,224,236,.12);
  color:rgba(238,244,250,.84);
  font-size:14px;
  transition:border-color .2s,background .2s,transform .2s;
}
.quick-select:hover{
  background:rgba(47,215,230,.09);
  border-color:rgba(47,215,230,.3);
  color:#fff;
}
.quick-select i{color:var(--cyan);font-size:12px}
.quick-select.double{grid-column:span 2}
.hero-panel-note{
  margin-top:18px;
  color:var(--muted);
  font-size:13px;
  display:flex;
  align-items:center;
  gap:8px;
  border-top:1px dashed rgba(214,224,236,.16);
  padding-top:16px;
}
.hero-panel-note .red-dot{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 0 3px rgba(178,58,66,.2);flex-shrink:0}

.section{
  padding:96px 0;
}
.section-tight{padding:64px 0}
.section-head{
  max-width:720px;
  margin-bottom:46px;
}
.section-head h2{
  font-size:33px;
  line-height:1.3;
  color:#fff;
  font-weight:750;
  letter-spacing:-.015em;
  margin-top:12px;
}
.section-head h2 .red-line{
  display:inline-block;
  width:28px;
  height:3px;
  background:var(--red);
  vertical-align:middle;
  margin-right:8px;
}
.section-head p{
  margin-top:12px;
  color:var(--muted);
  font-size:15px;
}
.center-head{margin-left:auto;margin-right:auto;text-align:center}
.center-head h2::after{
  content:"";
  display:block;
  width:48px;
  height:2px;
  background:var(--red);
  margin:16px auto 0;
}

.pain-section{
  padding:72px 0;
  background:var(--bg-deep);
  border-top:1px solid rgba(214,224,236,.07);
  border-bottom:1px solid rgba(214,224,236,.07);
}
.pain-layout{
  display:grid;
  grid-template-columns:0.8fr 1.2fr;
  gap:56px;
  align-items:start;
}
.pain-copy{
  position:sticky;
  top:120px;
}
.pain-copy h2{
  color:#fff;
  font-size:32px;
  line-height:1.3;
  margin-top:14px;
  font-weight:750;
}
.pain-copy .pain-desc{
  margin-top:14px;
  color:var(--muted);
  font-size:15px;
}
.pain-list{
  display:grid;
  gap:16px;
}
.pain-item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:14px;
  align-items:start;
  padding:20px;
  background:rgba(214,224,236,.035);
  border:1px solid rgba(214,224,236,.08);
  border-radius:var(--radius);
  transition:background .2s,border-color .2s;
}
.pain-item:hover{background:rgba(214,224,236,.055);border-color:rgba(214,224,236,.19)}
.pain-num{
  width:34px;
  height:34px;
  border-radius:50%;
  border:1px solid rgba(178,58,66,.55);
  color:#E9A3AA;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  background:rgba(178,58,66,.12);
  margin-top:3px;
}
.pain-item h3{
  color:#fff;
  font-size:16px;
  font-weight:650;
}
.pain-item p{
  color:var(--muted);
  font-size:14px;
  margin-top:6px;
  line-height:1.7;
}

.channel-section{
  padding:96px 0;
  background:linear-gradient(180deg,rgba(7,17,27,.2),rgba(7,17,27,.8));
}
.channel-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:18px;
}
.channel-card{
  grid-column:span 2;
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:280px;
  display:flex;
  align-items:flex-end;
  border:1px solid rgba(214,224,236,.12);
  background:var(--panel);
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.channel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,215,230,.38);
  box-shadow:0 18px 44px rgba(3,8,14,.4),0 0 0 1px rgba(47,215,230,.16);
}
.channel-card.wide{grid-column:span 4}
.channel-card .media-layer{
  position:absolute;
  inset:0;
  z-index:0;
}
.channel-card .media-layer img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.panel-shade{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,17,27,.18) 0%,rgba(7,17,27,.88) 68%,rgba(11,23,38,.97) 100%);
}
.card-body{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  width:100%;
  padding:22px 22px 20px;
}
.card-topline{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:8px;
}
.card-topline .index{
  width:24px;
  height:3px;
  background:var(--red);
  border-radius:9px;
  display:inline-block;
}
.card-topline .tag-card{
  color:rgba(178,58,66,.85);
  font-weight:700;
  font-size:13px;
}
.card-title{
  color:#fff;
  font-size:20px;
  font-weight:750;
  line-height:1.4;
}
.wide .card-title{font-size:25px}
.card-desc{
  color:rgba(214,224,236,.69);
  font-size:14px;
  line-height:1.7;
  margin-top:10px;
  max-width:95%;
}
.card-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  color:var(--cyan);
  font-size:14px;
  font-weight:600;
  transition:gap .2s,color .2s;
}
.card-more i{font-size:12px}
.channel-card:hover .card-more{gap:12px;color:#EAFBFF}
.channel-note{
  margin-top:24px;
  display:flex;
  justify-content:flex-end;
  color:var(--muted);
  font-size:13px;
}
.channel-note a{color:var(--cyan);display:inline-flex;align-items:center;gap:4px}

.faq-section{
  padding:90px 0;
  background:var(--bg-void);
}
.faq-layout{
  display:grid;
  grid-template-columns:.7fr 1.3fr;
  gap:56px;
}
.faq-copy h2{color:#fff;font-size:31px;line-height:1.3;margin-top:14px;font-weight:750}
.faq-copy p{color:var(--muted);font-size:15px;margin-top:14px}
.faq-copy .faq-tip{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-top:24px;
  padding:16px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(214,224,236,.1);
  background:rgba(214,224,236,.03);
  color:rgba(214,224,236,.7);
  font-size:13px;
}
.faq-list{
  border-top:1px solid rgba(214,224,236,.1);
}
.faq-item{
  border-bottom:1px solid rgba(214,224,236,.1);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 6px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:rgba(236,242,250,.9);
  transition:color .2s;
}
.faq-q:hover{color:#fff}
.faq-q .icon{
  width:28px;
  height:28px;
  border-radius:9px;
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(178,58,66,.12);
  color:#E9A1A8;
  font-size:15px;
  transition:transform .25s,background .25s,color .25s;
}
.faq-item.open .icon{
  transform:rotate(45deg);
  background:rgba(47,215,230,.14);
  color:var(--cyan);
}
.faq-a{
  display:none;
  padding:0 40px 20px 6px;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}
.faq-item.open .faq-a{display:block}

.principles-section{
  background:var(--bg-deep);
  border-top:1px solid rgba(214,224,236,.06);
  padding:72px 0;
}
.principles-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border:1px solid rgba(214,224,236,.09);
  background:rgba(214,224,236,.02);
}
.principle-item{
  padding:28px 24px;
  border-right:1px solid rgba(214,224,236,.09);
}
.principle-item:last-child{border-right:none}
.principle-value{
  color:#fff;
  font-size:28px;
  font-weight:800;
  letter-spacing:-.02em;
  display:flex;
  align-items:center;
  gap:10px;
}
.principle-value i{font-style:normal;color:rgba(178,58,66,.5);font-size:18px}
.principle-title{
  margin-top:12px;
  color:#fff;
  font-size:16px;
  font-weight:650;
  position:relative;
  padding-left:16px;
}
.principle-title::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border:1px solid var(--red);
  border-radius:3px;
  transform:rotate(45deg);
}
.principle-item p{
  margin-top:8px;
  color:var(--muted);
  font-size:13px;
  line-height:1.7;
}

.latest-section{
  background:var(--marble);
  color:var(--ink);
  padding:96px 0;
}
.latest-section .section-head{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  border-bottom:1px solid rgba(31,42,53,.1);
  padding-bottom:24px;
}
.latest-section .section-head h2{color:var(--ink)}
.latest-section .all-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--red);
  font-weight:600;
  margin-top:22px;
}
.cms-list{
  margin-top:42px;
  display:grid;
  gap:18px;
}
.cms-row{
  display:grid;
  grid-template-columns:130px 1fr auto;
  gap:20px;
  align-items:center;
  padding:16px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.8);
  border:1px solid rgba(31,42,53,.08);
  box-shadow:0 8px 26px rgba(45,50,60,.05);
  transition:transform .22s,border-color .22s,box-shadow .22s;
}
.cms-row:hover{
  transform:translateY(-2px);
  border-color:rgba(31,42,53,.16);
  box-shadow:0 12px 28px rgba(45,50,60,.1);
}
.cms-thumbnail{
  height:78px;
  border-radius:12px;
  background:linear-gradient(135deg,#223C55,#0A1B2B);
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(47,215,230,.55);
}
.cms-thumbnail::after{
  content:"米兰";
  position:absolute;
  bottom:6px;
  right:10px;
  font-size:10px;
  color:rgba(255,255,255,.44);
  letter-spacing:.12em;
}
.cms-title{
  color:var(--ink);
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  transition:color .2s;
}
.cms-row:hover .cms-title{color:var(--red)}
.cms-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:6px;
  font-size:12px;
  color:rgba(31,42,53,.56);
}
.cms-meta .cat-pill{
  background:rgba(178,58,66,.09);
  color:#A63A42;
  padding:3px 8px;
  border-radius:999px;
  font-weight:500;
}
.cms-summary{
  color:rgba(31,42,53,.7);
  font-size:13px;
  line-height:1.65;
  margin-top:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-arrow{
  color:var(--ink);
  opacity:.45;
  font-size:16px;
}
.cms-empty{
  text-align:center;
  padding:64px 20px;
  border:1px dashed rgba(31,42,53,.18);
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.56);
  font-size:15px;
  color:rgba(31,42,53,.65);
}
.cms-empty i{
  display:block;
  font-size:28px;
  color:var(--red);
  margin-bottom:16px;
}

.testimonial-section{
  padding:90px 0;
  background:var(--bg-void);
}
.testimonial-subtitle{
  max-width:640px;
  color:var(--muted);
  margin-top:14px;
  font-size:15px;
}
.testimonial-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:44px;
}
.talk-card{
  padding:26px;
  border-radius:var(--radius-lg);
  background:linear-gradient(145deg,#fff,rgba(255,255,255,.92));
  color:var(--ink);
  border:1px solid rgba(31,42,53,.08);
  box-shadow:0 16px 40px rgba(3,8,14,.12);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  transition:transform .22s,border-color .22s;
}
.talk-card:hover{transform:translateY(-3px)}
.talk-card.feature{
  grid-row:span 2;
  background:linear-gradient(145deg,var(--panel-soft),var(--panel));
  color:#fff;
  border-color:rgba(255,255,255,.08);
}
.talk-quote{
  font-size:15px;
  line-height:1.85;
  color:inherit;
  opacity:.94;
  margin-top:14px;
  flex:1;
}
.talk-feature-mark{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.talk-feature-mark .quote-icon{
  font-size:36px;
  color:#fff;
  opacity:.35;
}
.person-row{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:22px;
}
.avatar{
  width:44px;
  height:44px;
  border-radius:50%;
  background:linear-gradient(135deg,#D8DEE8,#9FADBF);
  border:2px solid rgba(255,255,255,.5);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  color:var(--ink);
  font-weight:700;
}
.talk-card.feature .avatar{
  border-color:rgba(47,215,230,.4);
  background:linear-gradient(135deg,#163A52,#0E2B3E);
  color:var(--cyan);
}
.person-name{font-weight:700;font-size:14px}
.person-role{font-size:12px;opacity:.7;margin-top:2px}
.talk-tags{
  display:flex;
  gap:8px;
  margin-top:18px;
  flex-wrap:wrap;
}

.final-cta{
  position:relative;
  padding:110px 0;
  text-align:center;
  background:
    linear-gradient(180deg,rgba(7,17,27,.86) 0%,rgba(11,23,38,.96) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-top:1px solid rgba(214,224,236,.08);
}
.final-cta::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:linear-gradient(90deg,transparent,var(--red),var(--cyan),transparent);
  opacity:.8;
}
.final-inner h2{
  font-size:39px;
  font-weight:800;
  color:#fff;
  line-height:1.3;
  letter-spacing:-.02em;
}
.final-inner p{
  color:var(--muted);
  max-width:550px;
  margin:18px auto 0;
  font-size:16px;
}
.final-actions{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top:34px;
}
.final-safe{
  margin-top:28px;
  color:rgba(214,224,236,.42);
  font-size:12px;
  letter-spacing:.04em;
}
.to-top{
  position:absolute;
  right:26px;
  bottom:24px;
  width:42px;
  height:42px;
  border-radius:50%;
  border:1px solid rgba(214,224,236,.2);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--body-text);
  transition:border-color .2s,color .2s,transform .2s;
}
.to-top:hover{
  color:var(--cyan);
  border-color:rgba(47,215,230,.6);
  transform:translateY(-3px);
}

.site-footer{
  background:#060E16;
  padding:64px 0 0;
  border-top:1px solid rgba(214,224,236,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{font-size:17px}
.footer-desc{
  color:var(--muted);
  font-size:13px;
  margin-top:16px;
  line-height:1.8;
  max-width:300px;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.footer-links li + li{margin-top:10px}
.footer-links a{
  color:var(--muted);
  font-size:14px;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{
  color:var(--cyan);
  padding-left:4px;
}
.footer-bottom{
  border-top:1px solid rgba(214,224,236,.08);
  padding:18px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  color:rgba(214,224,236,.48);
  font-size:12px;
}
.footer-bottom a{
  color:rgba(214,224,236,.72);
}
.footer-bottom .legal-links{
  display:flex;
  gap:20px;
}
.footer-small i{font-size:11px;color:var(--red)}

.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.visible{
  opacity:1;
  transform:none;
}
@media(max-width:1024px){
  .hero{padding:76px 0}
  .hero-inner{gap:28px;grid-template-columns:1.2fr .8fr}
  .hero-copy h1{font-size:42px}
  .pain-layout{grid-template-columns:1fr;gap:36px}
  .pain-copy{position:static}
  .faq-layout{grid-template-columns:1fr;gap:44px}
  .principles-grid{grid-template-columns:1fr 1fr}
  .principle-item{border-bottom:1px solid rgba(214,224,236,.09)}
  .principle-item:nth-child(2){border-right:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .channel-card,.channel-card.wide{grid-column:span 3}
  .channel-grid{grid-template-columns:repeat(6,1fr)}
}
@media(max-width:768px){
  .section{padding:68px 0}
  .menu-toggle{display:inline-flex}
  .nav-channels-inner{display:none}
  .mobile-tab-panel{display:none}
  .mobile-tab-panel.open{display:block}
  .mobile-tab-panel a{
    display:block;
    padding:10px 14px;
    color:var(--body-text);
    border-radius:8px;
    font-size:15px;
  }
  .mobile-tab-panel a.active{color:var(--cyan);background:rgba(47,215,230,.1)}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero{padding:32px 0 60px}
  .hero-copy h1{font-size:36px}
  .hero-panel{margin-top:10px}
  .quick-select-grid{grid-template-columns:1fr}
  .quick-select.double{grid-column:span 1}
  .section-head h2{font-size:29px}
  .faq-a{padding-right:0}
  .testimonial-grid{grid-template-columns:1fr}
  .talk-card.feature{grid-row:auto}
  .final-cta{padding:72px 0}
  .final-inner h2{font-size:31px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:640px){
  .hero-copy h1{font-size:32px;line-height:1.3}
  .hero-cta-row .btn{flex:1}
  .section-head{flex-direction:column;align-items:flex-start}
  .cms-row{grid-template-columns:1fr}
  .cms-thumbnail{height:130px}
  .channel-card,.channel-card.wide{grid-column:span 6}
  .channel-card{min-height:240px}
  .card-body{padding:18px}
  .btn{width:auto}
}
@media(max-width:520px){
  .header-cta-desktop{display:none}
  .nav-actions .icon-btn{display:none}
  .section{padding:52px 0}
  .brand{font-size:17px}
  .principles-grid{grid-template-columns:1fr}
  .principle-item{border-right:none;border-bottom:1px solid rgba(214,224,236,.09)}
  .principle-item:last-child{border-bottom:none}
  .latest-section .section-head h2{font-size:24px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root {
  --bg-dark: #07111B;
  --panel: #101F2F;
  --panel-2: #14293D;
  --panel-soft: rgba(16, 31, 47, 0.88);
  --marble: #F3F0EA;
  --marble-2: #E9E5DC;
  --ink: #CFD8E3;
  --ink-deep: #1F2A35;
  --text-muted: rgba(207, 216, 227, 0.64);
  --red: #B23A42;
  --cyan: #2FD7E6;
  --cyan-soft: rgba(47, 215, 230, 0.16);
  --border-dark: rgba(207, 216, 227, 0.1);
  --border-light: rgba(31, 42, 53, 0.12);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 18px 48px rgba(0, 0, 0, 0.3);
  --shadow-cyan: 0 0 30px rgba(47, 215, 230, 0.2);
  --space-section: 100px;
  --transition: all 0.24s ease;
}

html, body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--ink);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

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

button, input, textarea {
  font-family: inherit;
  outline: none;
}

section {
  scroll-margin-top: 130px;
}

.grid-container {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 17, 27, 0.92);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(207, 216, 227, 0.08);
}

.nav-primary {
  background: rgba(7, 17, 27, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--marble);
  white-space: nowrap;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(178, 58, 66, 0.7), rgba(47, 215, 230, 0.55));
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 24px rgba(47, 215, 230, 0.08);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-dark);
  color: var(--ink);
  width: 40px;
  height: 40px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.icon-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 18px rgba(47, 215, 230, 0.16);
}

.header-cta-desktop {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  transition: var(--transition);
  border: 0;
  cursor: pointer;
}

.btn-sm {
  font-size: 13px;
  padding: 10px 18px;
}

.btn-primary {
  background: var(--cyan);
  color: #07111B;
  box-shadow: 0 0 14px rgba(47, 215, 230, 0.22);
  white-space: nowrap;
}

.btn-primary:hover {
  background: #63E7F4;
  color: #06101A;
  transform: translateX(2px);
  box-shadow: 0 0 26px rgba(47, 215, 230, 0.34);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--ink);
  white-space: nowrap;
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dark);
  color: var(--ink);
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.nav-channels {
  background: rgba(10, 23, 36, 0.96);
}

.nav-channels-inner {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 46px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-channels-inner::-webkit-scrollbar {
  display: none;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 14px;
  border-radius: 999px;
  color: rgba(207, 216, 227, 0.78);
  white-space: nowrap;
  flex: 0 0 auto;
  position: relative;
}

.channel-link i {
  font-size: 14px;
  color: rgba(207, 216, 227, 0.46);
}

.channel-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--marble);
}

.channel-link:hover::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--red);
  border-radius: 999px;
}

.channel-link.active {
  background: rgba(47, 215, 230, 0.08);
  color: #C9F8FF;
  border: 1px solid rgba(47, 215, 230, 0.17);
}

.channel-link.active i {
  color: var(--cyan);
}

.channel-link.active::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: -1px;
  height: 2px;
  background: var(--red);
  border-radius: 999px;
}

.mobile-tab-panel {
  display: none;
  padding-bottom: 18px;
}

.mobile-tab-panel.open {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
}

.mobile-tab-panel a {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  padding: 10px 14px;
  color: var(--ink);
  font-size: 14px;
}

.mobile-tab-panel a.active {
  background: rgba(47, 215, 230, 0.1);
  border-color: rgba(47, 215, 230, 0.28);
}

.cat-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  padding: 44px 0 64px;
  border-bottom: 1px solid rgba(178, 58, 66, 0.24);
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 38%;
  z-index: 0;
}

.cat-hero-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 17, 27, 0.97) 0%, rgba(7, 17, 27, 0.9) 42%, rgba(7, 17, 27, 0.48) 100%);
  z-index: 1;
}

.cat-hero-veil::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: linear-gradient(0deg, #07111B 0%, transparent 100%);
}

.cat-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 32px 20px 0;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
  flex: 1;
  width: 100%;
}

.crumb {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.crumb i {
  font-size: 11px;
  color: rgba(207, 216, 227, 0.28);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--red);
  display: inline-block;
  border-radius: 999px;
}

.cat-hero-title {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.2vw, 56px);
  font-weight: 800;
  line-height: 1.18;
  color: #F6F3ED;
}

.cat-hero-title .hero-position {
  display: block;
  color: var(--cyan);
  font-size: 0.58em;
  font-weight: 700;
  margin-top: 12px;
  letter-spacing: 0.02em;
}

.hero-summary {
  font-size: 16px;
  line-height: 1.9;
  color: rgba(207, 216, 227, 0.78);
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-xl {
  padding: 15px 28px;
  font-size: 15px;
  border-radius: 999px;
}

.btn-warm {
  background: #fff;
  color: #07111B;
}

.btn-warm:hover {
  background: var(--marble);
  color: #07111B;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
}

.hero-quick-panel {
  width: 100%;
  min-height: 290px;
  background: rgba(16, 31, 47, 0.64);
  border: 1px solid rgba(207, 216, 227, 0.16);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.3);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  overflow: hidden;
  position: relative;
}

.hero-quick-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(47, 215, 230, 0.14), transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-quick-panel .quick-title {
  font-weight: 700;
  color: var(--marble);
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2px;
}

.hero-quick-panel .quick-title i {
  color: var(--cyan);
}

.quick-sub {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-dark);
}

.quick-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.quick-visual-row {
  display: flex;
  gap: 14px;
}

.qv-item {
  flex: 1;
  background: rgba(20, 41, 61, 0.72);
  border: 1px solid var(--border-dark);
  border-radius: 16px;
  padding: 14px;
  text-align: left;
}

.qv-item i {
  color: var(--red);
  font-size: 18px;
  margin-bottom: 10px;
}

.qv-item strong {
  display: block;
  font-size: 14px;
  color: #F3F0EA;
  margin-bottom: 6px;
}

.qv-item span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

.quick-status {
  background: rgba(178, 58, 66, 0.1);
  border-left: 2px solid var(--red);
  border-radius: 0 12px 12px 0;
  padding: 14px 16px;
  color: #D8DCE2;
  font-size: 13px;
  line-height: 1.7;
  margin-top: 16px;
}

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

.section-spacing-sm {
  padding: 64px 0;
}

.section-head {
  max-width: 820px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.28;
  color: #F6F3ED;
  font-weight: 800;
}

.section-head .section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.85;
}

.section-head.light h2 {
  color: var(--ink-deep);
}

.section-head.light .section-desc {
  color: rgba(31, 42, 53, 0.66);
}

.modal-navigation {
  background: linear-gradient(180deg, #081521 0%, #0A1726 100%);
  padding: var(--space-section) 0;
}

.nav-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

.nav-card-grid .module-card-large {
  grid-column: span 1;
  min-height: 420px;
}

.module-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--panel-soft);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  text-align: left;
}

.module-card.wide-card {
  grid-row: span 2;
  min-height: 100%;
}

.module-card:hover {
  transform: translateY(-3px);
  border-color: rgba(47, 215, 230, 0.36);
  box-shadow: 0 0 22px rgba(47, 215, 230, 0.07), 0 10px 30px rgba(0, 0, 0, 0.24);
}

.module-card .module-img {
  position: relative;
  height: 170px;
  overflow: hidden;
  background: var(--panel-2);
}

.module-card.wide-card .module-img {
  height: 220px;
}

.module-card .module-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

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

.module-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(7, 17, 27, 0.06), rgba(7, 17, 27, 0.86));
}

.module-count {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: rgba(178, 58, 66, 0.88);
  height: 28px;
  min-width: 30px;
  padding: 0 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
}

.module-card.large-module {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 280px;
  grid-column: span 2;
}

.large-module .module-img {
  height: 100%;
  min-height: 260px;
}

.module-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex: 1;
}

.large-module .module-body {
  padding: 28px;
}

.module-tagline {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.module-tagline::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--red);
}

.module-body h3 {
  margin: 0;
  font-size: 21px;
  font-weight: 700;
  color: var(--marble);
  line-height: 1.35;
}

.module-body p {
  margin: 0;
  font-size: 14px;
  color: rgba(207, 216, 227, 0.72);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.module-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.module-chips span {
  font-size: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #CCD7E2;
  padding: 4px 12px;
  border-radius: 999px;
  line-height: 1.6;
}

.card-bottom {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
}

.card-link i {
  transition: transform 0.2s ease;
}

.card-link:hover i {
  transform: translateX(3px);
}

.nav-card-grid-2 {
  display: grid;
  grid-template-columns: 2.8fr 1fr 1fr;
  gap: 20px;
}

.module-card-small {
  grid-column: span 1;
  min-height: 320px;
}

.nav-card-grid-2 .module-card-large {
  min-height: 420px;
}

.app-scene {
  background: var(--marble);
  color: var(--ink-deep);
  padding: calc(var(--space-section) * 0.9) 0;
  border-radius: 0;
}

.app-scene h2 {
  color: var(--ink-deep);
}

.app-scene-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.scene-description h2 {
  margin: 10px 0 14px;
  font-size: clamp(27px, 2.8vw, 38px);
  line-height: 1.3;
  font-weight: 800;
}

.scene-description p {
  color: rgba(31, 42, 53, 0.66);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 22px;
}

.scene-description .scene-note {
  background: rgba(178, 58, 66, 0.07);
  border-left: 2px solid var(--red);
  padding: 14px 18px;
  border-radius: 0 14px 14px 0;
  color: #4E555C;
  font-size: 13px;
  line-height: 1.75;
}

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

.scene-item {
  background: #fff;
  border: 1px solid rgba(31, 42, 53, 0.1);
  border-radius: 18px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  align-items: flex-start;
  box-shadow: 0 16px 34px rgba(31, 42, 53, 0.05);
}

.scene-num {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  background: var(--red);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.scene-item h3 {
  margin: 0 0 6px;
  color: var(--ink-deep);
  font-size: 17px;
  font-weight: 700;
}

.scene-item p {
  margin: 0;
  color: rgba(31, 42, 53, 0.58);
  font-size: 14px;
  line-height: 1.75;
}

.step-area {
  padding: var(--space-section) 0;
  background:
    radial-gradient(circle at 85% 10%, rgba(178, 58, 66, 0.16), transparent 30%),
    #0B1826;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 42px;
}

.step-item {
  position: relative;
  background: rgba(16, 31, 47, 0.74);
  border: 1px solid rgba(207, 216, 227, 0.1);
  border-radius: 18px;
  padding: 26px 20px 24px 56px;
  transition: var(--transition);
}

.step-item:hover {
  border-color: rgba(47, 215, 230, 0.28);
  background: rgba(20, 41, 61, 0.9);
}

.step-no {
  position: absolute;
  left: 16px;
  top: 24px;
  font-size: 22px;
  font-weight: 800;
  color: rgba(178, 58, 66, 0.88);
  font-family: "Inter", sans-serif;
}

.step-item h3 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--marble);
  font-weight: 700;
}

.step-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(207, 216, 227, 0.72);
}

.update-note {
  background: rgba(20, 41, 61, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 34px;
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 36px;
  align-items: start;
}

.update-note h3 {
  margin: 0;
  color: var(--marble);
  font-size: 19px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.update-note h3 i {
  color: var(--red);
}

.update-note p {
  margin: 0;
  color: rgba(207, 216, 227, 0.74);
  font-size: 14px;
  line-height: 1.9;
  border-left: 2px solid rgba(47, 215, 230, 0.24);
  padding-left: 24px;
}

.faq-area {
  background: #0D1B2A;
  padding: var(--space-section) 0;
}

.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(16, 31, 47, 0.72);
  border: 1px solid rgba(207, 216, 227, 0.1);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(47, 215, 230, 0.3);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  font-weight: 600;
  color: #EDF0F3;
  font-size: 15px;
}

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

.faq-icon {
  min-width: 24px;
  text-align: center;
  color: var(--red);
  font-family: "Inter", sans-serif;
  font-size: 18px;
}

.faq-item summary .faq-icon::before {
  content: "\002B";
  font-weight: 400;
}

.faq-item[open] summary .faq-icon::before {
  content: "\2212";
}

.faq-item[open] summary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.faq-answer {
  padding: 6px 24px 22px;
  color: rgba(207, 216, 227, 0.72);
  font-size: 14px;
  line-height: 1.9;
}

.faq-answer strong {
  color: var(--marble);
}

.cat-switch {
  padding: 88px 0;
  border-top: 1px solid var(--border-dark);
  background: rgba(7, 17, 27, 1);
}

.switch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.switch-card {
  background: rgba(16, 31, 47, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 24px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: var(--transition);
}

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

.switch-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(47, 215, 230, 0.12);
  color: var(--cyan);
  font-size: 18px;
  flex: 0 0 auto;
}

.switch-card strong {
  color: var(--marble);
  font-size: 15px;
  display: block;
  margin-bottom: 8px;
}

.switch-card span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

.cta-panel {
  position: relative;
  text-align: center;
  background: var(--panel-2);
  overflow: hidden;
  padding: 110px 0;
  z-index: 1;
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-position: center;
  background-size: cover;
  z-index: -1;
}

.cta-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 17, 27, 0.9), rgba(7, 17, 27, 0.94));
  z-index: -1;
}

.cta-panel h2 {
  color: #F8F5EF;
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  margin: 0 auto 16px;
  max-width: 760px;
  line-height: 1.3;
}

.cta-panel p {
  color: rgba(207, 216, 227, 0.8);
  font-size: 15px;
  line-height: 1.9;
  max-width: 640px;
  margin: 0 auto 36px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 22px;
}

.security-line {
  font-size: 12px;
  color: rgba(207, 216, 227, 0.52);
}

.site-footer {
  background: #050D16;
  border-top: 1px solid rgba(178, 58, 66, 0.28);
  padding: 70px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(207, 216, 227, 0.08);
}

.footer-desc {
  font-size: 14px;
  color: rgba(207, 216, 227, 0.64);
  line-height: 1.9;
  margin: 18px 0 0;
}

.footer-title {
  margin: 0 0 20px;
  color: var(--marble);
  font-size: 15px;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.footer-links a {
  font-size: 13px;
  color: rgba(207, 216, 227, 0.7);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: var(--cyan);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  color: rgba(207, 216, 227, 0.48);
  font-size: 13px;
}

.footer-small {
  font-size: 13px;
}

.footer-bottom .legal-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(207, 216, 227, 0.44);
}

a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(47, 215, 230, 0.72);
  outline-offset: 2px;
}

@media screen and (max-width: 1023.98px) {
  .nav-actions .btn-ghost {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-channels-inner {
    display: none;
  }

  .cat-hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 26px;
  }

  .hero-summary {
    max-width: 680px;
  }

  .hero-quick-panel {
    min-height: auto;
    max-width: 680px;
  }

  .nav-card-grid {
    grid-template-columns: 1fr 1fr;
  }

  .nav-card-grid-2 {
    grid-template-columns: 1.3fr 1fr;
  }

  .nav-card-grid-2 .module-card-large {
    grid-row: span 2;
    min-height: 100%;
  }

  .large-module {
    min-height: 260px;
  }

  .app-scene-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

  .update-note {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  :root {
    --space-section: 72px;
  }
}

@media screen and (max-width: 767.98px) {
  :root {
    --space-section: 58px;
  }

  .nav-actions .btn-ghost {
    display: none;
  }

  .nav-actions {
    flex: 1;
    justify-content: flex-end;
  }

  .brand {
    font-size: 16px;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

  .nav-inner {
    min-height: 58px;
  }

  .cat-hero {
    min-height: 0;
    padding-bottom: 40px;
  }

  .cat-hero-title {
    font-size: 31px;
  }

  .hero-summary {
    font-size: 15px;
  }

  .hero-cta-row .btn-xl {
    width: 100%;
  }

  .btn-xl {
    font-size: 15px;
  }

  .quick-visual-row {
    flex-direction: column;
  }

  .mobile-tab-panel.open {
    grid-template-columns: 1fr;
  }

  .nav-card-grid {
    grid-template-columns: 1fr;
  }

  .nav-card-grid-2 {
    grid-template-columns: 1fr;
  }

  .large-module {
    grid-template-columns: 1fr;
  }

  .large-module .module-img {
    min-height: 160px;
  }

  .module-card.large-module {
    grid-column: span 1;
    display: block;
  }

  .large-module .module-body {
    padding: 22px;
  }

  .app-scene-grid {
    grid-template-columns: 1fr;
  }

  .scene-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

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

  .update-note {
    padding: 24px;
  }

  .update-note p {
    padding-left: 0;
    border-left: 0;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cta-buttons .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
    --bg-deep: #07111B;
    --bg-panel: #101F2F;
    --bg-panel-soft: #14293D;
    --marbble: #F1EEE6;
    --marbble-deep: #E7E1D6;
    --paper: #FFFFFF;
    --ink: #1F2A35;
    --muted: #8C9AA8;
    --body-text: #C5D1DD;
    --light-text: #EDF3F8;
    --red: #B23A42;
    --red-bright: #C4474F;
    --cyan: #2FD7E6;
    --cyan-deep: #1AA8BC;
    --border-light: rgba(255, 255, 255, .09);
    --border-paper: rgba(31, 42, 53, .12);
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 9px;
    --shadow-card: 0 18px 44px rgba(2, 8, 16, .28);
    --shadow-cyan: 0 0 0 1px rgba(47, 215, 230, .35), 0 12px 32px rgba(47, 215, 230, .18);
    --font-main: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
}
*,
*::before,
*::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: var(--font-main);
    background: var(--bg-deep);
    color: var(--body-text);
    line-height: 1.76;
    -webkit-font-smoothing: antialiased;
}
body,
p,
h1,
h2,
h3,
h4,
ul,
ol,
figure,
blockquote,
dd,
dl {
    margin: 0;
    padding: 0;
}
ul,
ol {
    list-style: none;
}
a {
    color: var(--cyan);
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease;
}
a:hover {
    color: var(--cyan-deep);
}
img {
    max-width: 100%;
    display: block;
    border: 0;
}
button,
input,
textarea {
    font: inherit;
    border: 0;
}
.grid-container {
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}
.narrow {
    max-width: 860px !important;
}
:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
}

/* ---------- header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 120;
    background: rgba(6, 14, 24, .92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.nav-primary {
    display: flex;
    align-items: center;
    min-height: 62px;
    background: rgba(8, 17, 29, .92);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 62px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: .01em;
    color: #fff;
    white-space: nowrap;
}
.brand:hover {
    color: #fff;
}
.brand-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 36px;
    border-radius: 12px;
    background: linear-gradient(140deg, #173247, #0A1927);
    border: 1px solid rgba(47, 215, 230, .28);
    color: var(--cyan);
    font-size: 15px;
    box-shadow: inset 0 0 12px rgba(47, 215, 230, .08);
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.icon-btn {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .13);
    color: #B5C4D3;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all .22s ease;
    cursor: pointer;
}
.icon-btn:hover {
    color: var(--cyan);
    border-color: rgba(47, 215, 230, .5);
    transform: translateY(-1px);
}
.menu-toggle {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .14);
    color: #E6EDF3;
    border-radius: 12px;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s ease;
}
.menu-toggle:hover {
    color: var(--cyan);
    border-color: rgba(47, 215, 230, .45);
}

/* buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 700;
    font-size: 14px;
    line-height: 1.4;
    text-align: center;
    cursor: pointer;
    transition: box-shadow .22s ease, transform .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
    white-space: nowrap;
}
.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}
.btn-primary {
    background: var(--cyan);
    color: #041218;
    font-weight: 800;
    box-shadow: 0 0 0 1px rgba(47, 215, 230, .35), 0 8px 32px rgba(47, 215, 230, .18);
}
.btn-primary:hover {
    background: #79E9F2;
    color: #03121A;
    transform: translateY(-1px);
    box-shadow: 0 0 0 1px rgba(47, 215, 230, .55), 0 10px 38px rgba(47, 215, 230, .28);
}
.btn-primary:active {
    transform: translateY(1px);
}
.btn-ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .22);
    color: var(--light-text);
}
.btn-ghost:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}
.btn-ghost-dark {
    border: 1px solid rgba(31, 42, 53, .22);
    color: #33424F;
}
.btn-ghost-dark:hover {
    border-color: var(--red);
    color: var(--red);
}
.btn-outline {
    border: 1px solid rgba(178, 58, 66, .5);
    color: var(--red);
    background: rgba(178, 58, 66, .04);
}
.btn-outline:hover {
    background: rgba(178, 58, 66, .1);
    color: var(--red);
    border-color: var(--red-bright);
    transform: translateY(-1px);
}
.header-cta-desktop {
    flex: 0 0 auto;
}

/* navigation channels */
.nav-channels {
    background: rgba(7, 15, 25, .88);
    border-top: 1px solid rgba(255, 255, 255, .045);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.nav-channels-inner {
    display: flex;
    gap: 2px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
}
.nav-channels-inner::-webkit-scrollbar {
    display: none;
}
.channel-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 17px;
    font-size: 14px;
    font-weight: 600;
    color: #A6B5C3;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.channel-link:hover {
    color: #F0F5FA;
    background: rgba(255, 255, 255, .04);
    border-bottom-color: rgba(178, 58, 66, .75);
}
.channel-link.active {
    color: #fff;
    border-bottom-color: var(--red);
}
.channel-link i {
    font-size: 14px;
}
.mobile-tab-panel {
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 12px 0 16px;
    border-top: 1px solid rgba(255, 255, 255, .06);
}
.mobile-tab-panel a {
    display: inline-flex;
    align-items: center;
    padding: 10px 8px;
    color: #B3C1CE;
    font-weight: 600;
    border-radius: 10px;
}
.mobile-tab-panel a:hover {
    color: #fff;
    background: rgba(255, 255, 255, .05);
}
.mobile-tab-panel.open {
    display: flex;
}

/* banner */
.article-banner {
    position: relative;
    padding: 76px 0 84px;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center 32%;
    overflow: hidden;
}
.article-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(96deg, rgba(6, 13, 22, .95) 0%, rgba(7, 17, 29, .86) 46%, rgba(8, 18, 32, .66) 100%);
}
.article-banner::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--red), transparent 36%);
}
.article-banner .grid-container {
    position: relative;
    z-index: 2;
}
.article-banner-inner {
    max-width: 900px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(220, 231, 240, .72);
    margin-bottom: 24px;
}
.breadcrumb a {
    color: rgba(220, 231, 240, .88);
    font-weight: 500;
}
.breadcrumb a:hover {
    color: var(--cyan);
}
.crumb-sep {
    opacity: .4;
    color: #8DA4B8;
}
.crumb-current {
    color: #F2F6FA;
    font-weight: 600;
    max-width: 420px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.article-channel-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(178, 58, 66, .14);
    border: 1px solid rgba(178, 58, 66, .32);
    color: #F4C8CC;
    font-size: 13px;
    font-weight: 600;
    border-radius: 999px;
    margin-bottom: 20px;
    letter-spacing: .02em;
}
.article-banner h1 {
    margin: 0 0 18px;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.26;
    font-weight: 800;
    letter-spacing: -.015em;
    color: #FFFFFF;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin-top: 6px;
    font-size: 14px;
    color: rgba(216, 228, 238, .78);
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.article-meta i {
    color: var(--cyan);
}
.banner-missing-note {
    color: rgba(220, 230, 240, .76);
    max-width: 620px;
    font-size: 16px;
    line-height: 1.8;
}

/* reader */
.article-reader {
    background: var(--marbble);
    color: var(--ink);
    padding: 86px 0 62px;
    position: relative;
}
.article-reader .narrow {
    max-width: 880px !important;
}
.article-lead {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 22px 24px;
    background: #FFFDF8;
    border: 1px solid rgba(178, 58, 66, .14);
    border-radius: 16px;
    margin-bottom: 34px;
}
.lead-badge {
    flex: 0 0 auto;
    font-size: 24px;
    color: var(--red);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(178, 58, 66, .08);
    border: 1px solid rgba(178, 58, 66, .14);
}
.article-lead p {
    margin: 0;
    color: #43515F;
    font-size: 16px;
    line-height: 1.82;
}

/* rich article */
.article-body {
    color: var(--ink);
    background: transparent;
}
.article-body p {
    margin: 0 0 1.45em;
    font-size: 17px;
    line-height: 1.9;
    color: #26333F;
}
.article-body h2 {
    font-size: 25px;
    font-weight: 800;
    line-height: 1.4;
    margin: 2.2em 0 .8em;
    color: #101C27;
    padding-left: 14px;
    border-left: 3px solid var(--red);
}
.article-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 2em 0 .7em;
    color: #17222D;
}
.article-body h4 {
    font-size: 17px;
    font-weight: 700;
    margin: 1.4em 0 .6em;
    color: #26333F;
}
.article-body ul {
    margin: 0 0 1.4em;
    padding-left: 1.2em;
    list-style: none;
}
.article-body ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: .5em;
    font-size: 16px;
    line-height: 1.8;
    color: #2B3743;
}
.article-body ul li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: .8em;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--red);
    transform: rotate(45deg);
    opacity: .72;
}
.article-body ol {
    margin: 0 0 1.4em;
    padding-left: 1.4em;
    list-style: decimal;
}
.article-body ol li {
    margin-bottom: .45em;
    color: #2B3743;
}
.article-body a {
    color: #B23A42;
    border-bottom: 1px solid rgba(178, 58, 66, .35);
}
.article-body a:hover {
    color: #7E1D24;
    border-bottom-color: currentColor;
}
.article-body blockquote {
    margin: 1.8em 0;
    padding: 18px 24px;
    background: #F8F4EB;
    border-left: 4px solid var(--cyan-deep);
    color: #2F3C49;
    border-radius: 0 14px 14px 0;
    font-size: 17px;
}
.article-body img {
    border-radius: 16px;
    margin: 1.6em auto;
    box-shadow: 0 14px 34px rgba(15, 24, 34, .14);
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0 2em;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(14, 23, 34, .08);
}
.article-body table th {
    background: #111E2A;
    color: #fff;
    font-weight: 600;
    text-align: left;
    padding: 12px 15px;
    font-size: 14px;
}
.article-body table td {
    padding: 11px 15px;
    border-bottom: 1px solid rgba(31, 42, 53, .08);
    font-size: 15px;
}
.article-body table tr:last-child td {
    border-bottom: 0;
}

/* article footer */
.article-end {
    margin-top: 46px;
    padding-top: 30px;
    border-top: 1px solid rgba(31, 42, 53, .13);
}
.article-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.tag-label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #4C5D6C;
    font-size: 14px;
    font-weight: 600;
    margin-right: 4px;
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 13px;
    font-size: 13px;
    color: #1D2833;
    background: rgba(178, 58, 66, .08);
    border: 1px solid rgba(178, 58, 66, .18);
    border-radius: 999px;
    font-weight: 600;
}
.article-back-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 32px;
}
.back-channel-note {
    color: #637078;
    font-size: 13px;
}

/* empty */
.empty-state {
    border: 1px dashed rgba(178, 58, 66, .24);
    border-radius: 20px;
    background: rgba(255, 255, 255, .55);
    padding: 96px 24px;
    text-align: center;
}
.empty-emblem {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(178, 58, 66, .1);
    border: 1px solid rgba(178, 58, 66, .16);
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--red);
}
.empty-state h2 {
    font-size: 24px;
    color: #17222C;
    font-weight: 800;
    margin-bottom: 8px;
}
.empty-state p {
    color: #63707C;
    margin-bottom: 20px;
}

/* guide callout */
.guide-callout {
    background: linear-gradient(180deg, #0C1A29, #08121E);
    padding: 62px 0 90px;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.guide-callout-card {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    background: linear-gradient(140deg, #12263A, #0A1928);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(1, 7, 13, .3);
}
.callout-copy {
    padding: 42px 40px;
}
.section-kicker {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--red-bright);
    margin-bottom: 14px;
}
.section-kicker::before {
    content: "";
    width: 20px;
    height: 2px;
    background: var(--red-bright);
    display: inline-block;
    border-radius: 2px;
}
.callout-copy h2 {
    color: #FFFFFF;
    font-size: 28px;
    line-height: 1.35;
    font-weight: 800;
    margin-bottom: 16px;
}
.callout-copy p {
    color: #A9BECC;
    font-size: 16px;
    line-height: 1.85;
    margin-bottom: 24px;
}
.callout-media {
    background: #0D1C2B;
    min-height: 260px;
    position: relative;
}
.callout-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
}
.callout-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 25, 39, .3), transparent);
}

/* related channels */
.channel-section {
    background: #060E16;
    padding: 88px 0 78px;
    position: relative;
}
.channel-section::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(47, 215, 230, .14), transparent);
}
.section-head {
    margin-bottom: 36px;
}
.section-head.light .section-title {
    color: #E8EEF3;
}
.section-head.light .section-subtitle {
    color: #8799A8;
}
.section-title {
    font-size: 30px;
    font-weight: 800;
    color: #22303B;
    line-height: 1.3;
    margin-top: 4px;
}
.section-subtitle {
    font-size: 15px;
    color: #6D7E8D;
    max-width: 660px;
    margin-top: 8px;
}
.rel-cell {
    margin-bottom: 26px;
}
.rel-card {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 30px 28px 28px;
    background: linear-gradient(145deg, rgba(19, 36, 55, .92), rgba(10, 19, 29, .92));
    border: 1px solid rgba(255, 255, 255, .09);
    border-radius: 18px;
    overflow: hidden;
    transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.rel-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 3px;
    width: 46px;
    background: var(--red);
    border-radius: 0 0 3px 0;
    transition: width .26s ease;
}
.rel-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 18px;
    pointer-events: none;
    box-shadow: inset 0 0 24px rgba(47, 215, 230, .05);
}
.rel-card:hover {
    transform: translateY(-5px);
    border-color: rgba(47, 215, 230, .36);
    box-shadow: var(--shadow-card), 0 2px 24px rgba(47, 215, 230, .12);
}
.rel-card:hover::before {
    width: 80px;
}
.rel-icon {
    width: 46px;
    height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: rgba(47, 215, 230, .09);
    border: 1px solid rgba(47, 215, 230, .24);
    color: var(--cyan);
    font-size: 20px;
    margin-bottom: 20px;
}
.rel-card h3 {
    font-size: 17px;
    font-weight: 800;
    color: #EDF1F5;
    margin-bottom: 8px;
}
.rel-card p {
    font-size: 14px;
    color: #9BB0BF;
    line-height: 1.72;
    margin-bottom: 20px;
    flex: 1;
}
.rel-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: #A9DCE5;
}
.rel-more i {
    transition: transform .22s ease;
}
.rel-card:hover .rel-more {
    color: var(--cyan);
}
.rel-card:hover .rel-more i {
    transform: translateX(4px);
}

/* faq */
.faq-section {
    background: var(--marbble);
    padding: 88px 0;
    color: var(--ink);
}
.faq-section .narrow {
    max-width: 860px !important;
}
.faq-section .section-title {
    color: #1B2732;
}
.faq-list {
    margin-top: 34px;
}
details.faq-item {
    background: #FBF8F1;
    border: 1px solid rgba(31, 42, 53, .1);
    border-radius: 15px;
    padding: 0;
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color .22s ease, box-shadow .22s ease;
}
details.faq-item[open] {
    border-color: rgba(178, 58, 66, .24);
    box-shadow: 0 10px 28px rgba(17, 27, 38, .07);
}
details.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    list-style: none;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    color: #1E2A34;
    user-select: none;
}
details.faq-item summary::-webkit-details-marker {
    display: none;
}
details.faq-item summary:hover {
    color: #B23A42;
}
.faq-icon {
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(178, 58, 66, .08);
    border: 1px solid rgba(178, 58, 66, .18);
    color: var(--red);
    font-size: 14px;
    transition: transform .26s ease;
}
details[open] .faq-icon {
    transform: rotate(45deg);
}
details.faq-item .faq-answer {
    padding: 2px 24px 22px 56px;
    color: #46535E;
    font-size: 15px;
    line-height: 1.85;
}
details.faq-item .faq-answer p {
    margin-bottom: 10px;
}
details.faq-item .faq-answer p:last-child {
    margin-bottom: 0;
}

/* cta */
.cta-section {
    position: relative;
    padding: 98px 0 98px;
    text-align: center;
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center 24%;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(6, 13, 22, .92), rgba(8, 17, 28, .88) 62%, rgba(11, 19, 33, .78));
}
.cta-section .grid-container {
    position: relative;
    z-index: 2;
}
.cta-section::after {
    content: "";
    position: absolute;
    right: -60px;
    bottom: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 1px solid rgba(47, 215, 230, .16);
    box-shadow: 0 0 0 48px rgba(47, 215, 230, .04), 0 0 0 96px rgba(47, 215, 230, .025);
    pointer-events: none;
}
.cta-section h2 {
    color: #F1F5F8;
    font-size: clamp(27px, 3vw, 38px);
    font-weight: 800;
    line-height: 1.35;
    max-width: 660px;
    margin: 0 auto 18px;
}
.cta-section p {
    color: #B7C6D2;
    font-size: 16px;
    line-height: 1.85;
    max-width: 670px;
    margin: 0 auto 30px;
}
.cta-note {
    margin-top: 14px;
    font-size: 13px;
    color: rgba(206, 220, 231, .66);
    letter-spacing: .02em;
}

/* footer */
.site-footer {
    background: #08111B;
    border-top: 1px solid rgba(255, 255, 255, .07);
    padding: 62px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .9fr .9fr 1fr;
    gap: 40px;
    margin-bottom: 42px;
}
.footer-desc {
    color: #738698;
    font-size: 14px;
    line-height: 1.8;
    margin-top: 16px;
    max-width: 360px;
}
.footer-title {
    font-size: 15px;
    color: #D3DDE6;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: .02em;
}
.footer-links li {
    margin-bottom: 10px;
}
.footer-links a {
    color: #8498A9;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-links a:hover {
    color: var(--cyan);
    transform: translateX(2px);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .07);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    color: #5F7180;
    font-size: 13px;
}
.footer-small {
    margin-right: 3px;
}
.legal-links {
    display: flex;
    gap: 16px;
    color: #5E6F7E;
}

/* responsive */
@media (max-width: 1023px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 34px 24px;
    }
    .guide-callout-card {
        grid-template-columns: 1fr;
    }
    .callout-media {
        min-height: 220px;
    }
    .callout-media img {
        position: static;
        height: auto;
    }
}
@media (max-width: 840px) {
    .nav-channels-inner {
        padding-bottom: 0;
    }
}
@media (max-width: 767px) {
    .menu-toggle {
        display: inline-flex;
    }
    .nav-channels-inner {
        display: none;
    }
    .header-cta-desktop {
        display: none;
    }
    .article-banner {
        padding: 52px 0 62px;
    }
    .article-banner h1 {
        font-size: 28px;
    }
    .article-reader {
        padding: 54px 0 40px;
    }
    .article-body p {
        font-size: 16px;
    }
    .article-back-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .callout-copy {
        padding: 30px 26px;
    }
    .callout-copy h2 {
        font-size: 24px;
    }
    .section-title {
        font-size: 25px;
    }
    .channel-section,
    .faq-section,
    .cta-section {
        padding-top: 62px;
        padding-bottom: 62px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .legal-links {
        flex-direction: column;
        gap: 4px;
    }
    details.faq-item .faq-answer {
        padding-left: 24px;
    }
}
@media (max-width: 520px) {
    .grid-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .brand span:last-child {
        font-size: 15px;
        max-width: 240px;
    }
    .brand-icon {
        width: 32px;
        height: 32px;
        flex-basis: 32px;
    }
    .icon-btn {
        width: 36px;
        height: 36px;
    }
    .channel-link {
        font-size: 13px;
        padding: 11px 10px;
    }
    .article-lead {
        flex-direction: column;
        gap: 10px;
        padding: 18px;
    }
    .article-banner-inner {
        padding-right: 0;
    }
    .breadcrumb {
        font-size: 12px;
    }
    .crumb-current {
        max-width: 240px;
    }
    .article-tags {
        gap: 8px;
    }
    .rel-card {
        padding: 26px 22px;
    }
    .cta-section h2 {
        font-size: 26px;
    }
}

/* roulang page: category2 */
/* ===== Design tokens ===== */
:root{
  --bg-deep:#07111b;
  --bg-site:#0b1824;
  --bg-panel:#101f2e;
  --bg-card:#132a3d;
  --bg-card-soft:#163149;
  --marble:#efe9df;
  --marble-deep:#e6ded1;
  --ink-light:#d5dee8;
  --ink-body:#aebecf;
  --ink-soft:#8ba0b5;
  --ink-dark:#26323e;
  --cyan:#2fd7e6;
  --cyan-glow:rgba(47,215,230,.35);
  --milan-red:#b23a42;
  --milan-red-soft:#c94f58;
  --hairline:rgba(255,255,255,.1);
  --hairline-dark:rgba(38,50,62,.11);
  --radius-lg:22px;
  --radius-md:15px;
  --radius-sm:10px;
  --space-section:108px;
  --shadow-card:0 18px 42px rgba(0,0,0,.25);
  --shadow-soft:0 8px 24px rgba(0,0,0,.16);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;scroll-behavior:auto!important}
}
body{
  background:var(--bg-site);
  color:var(--ink-body);
  font-family:var(--font-cn);
  line-height:1.8;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit}
h1,h2,h3,h4,h5{color:var(--ink-light);line-height:1.28}
::selection{background:#374f76;color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:5px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.grid-container .grid-container{padding-left:0;padding-right:0}
.section{padding-top:var(--space-section);padding-bottom:var(--space-section)}

/* ===== Shared buttons ===== */
.btn{
  -webkit-appearance:none;
  appearance:none;
  border:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  border-radius:999px;
  font-size:15px;
  line-height:1.4;
  font-weight:600;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  background:transparent;
}
.btn i{font-size:.9em;opacity:.85}
.btn i+i{margin-left:2px}
.btn-primary{
  background:linear-gradient(140deg,var(--cyan),#9fe9ef);
  color:#062029;
  box-shadow:0 0 0 1px rgba(255,255,255,.18) inset,0 10px 28px var(--cyan-glow);
}
.btn-primary:hover{
  transform:translateX(2px);
  box-shadow:0 0 0 1px rgba(255,255,255,.25) inset,0 10px 38px rgba(47,215,230,.42);
  color:#031a22;
}
.btn-secondary{
  border:1px solid rgba(255,255,255,.28);
  color:#e8eef3;
  background:rgba(255,255,255,.03);
}
.btn-secondary:hover{border-color:var(--cyan);color:#fff;transform:translateY(-2px)}
.light-section .btn-secondary{border-color:rgba(38,50,62,.3);color:var(--ink-dark);background:rgba(255,255,255,.5)}
.light-section .btn-secondary:hover{border-color:var(--milan-red);color:var(--milan-red)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 32px;font-size:16px}
.icon-btn{
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--hairline);
  background:rgba(255,255,255,.03);
  color:#dce7ef;
  font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:.2s;
}
.icon-btn:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 12px rgba(47,215,230,.25)}
.arrow-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--cyan);transition:.25s;
}
.arrow-link i{transition:transform .2s}
.arrow-link:hover{color:#baeef2}
.arrow-link:hover i{transform:translateX(3px)}
.light-section .arrow-link{color:#a92f3a}
.light-section .arrow-link:hover{color:#14263b}

/* ===== Typography helpers ===== */
.sec-kicker{
  display:flex;align-items:center;gap:12px;
  font-size:13px;font-weight:700;letter-spacing:.15em;
  color:var(--cyan);margin-bottom:18px;text-transform:upper;
}
.sec-kicker::before{
  content:"";
  width:28px;height:2px;background:var(--milan-red);flex:0 0 auto;
}
.sec-kicker--light{color:#b8424b}
.sec-head h2{
  font-size:34px;font-weight:800;letter-spacing:-.5px;
}
.sec-lead{
  font-size:17px;color:var(--ink-body);max-width:760px;
  margin-top:14px;
}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,17,28,.92);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  border-bottom:1px solid var(--hairline);
  box-shadow:0 8px 28px rgba(0,0,0,.22);
}
.nav-primary{min-height:64px;display:flex;align-items:center}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px;letter-spacing:.2px;line-height:1.1}
.brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:rgba(47,215,230,.12);
  border:1px solid rgba(47,215,230,.45);
  color:var(--cyan);font-size:17px;
}
.brand:hover .brand-icon{box-shadow:0 0 18px rgba(47,215,230,.25)}
.nav-actions{display:flex;align-items:center;gap:12px}
.header-cta-desktop{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.2);color:#dbe8ef}
.header-cta-desktop:hover{border-color:var(--cyan);color:var(--cyan)}
.menu-toggle{display:none}
.nav-channels{background:rgba(10,22,33,.94)}
.nav-channels-inner{
  display:flex;gap:8px;overflow-x:auto;
  min-height:52px;align-items:center;scrollbar-width:none;
}
.nav-channels-inner::-webkit-scrollbar{display:none}
.channel-link{
  color:#aebfce;
  font-size:15px;font-weight:500;
  padding:11px 16px;
  border-radius:999px;
  white-space:nowrap;
  border:1px solid transparent;
  display:inline-flex;align-items:center;gap:7px;
  transition:.2s;line-height:1.2;
}
.channel-link i{font-size:14px;opacity:.85}
.channel-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.channel-link.active{
  background:rgba(178,58,66,.16);
  border-color:rgba(178,58,66,.42);
  color:#ffdcdd;
}
.mobile-tab-panel{display:none}

/* ===== Page hero / category banner ===== */
.cat-hero{
  background:transparent;
  position:relative;
  padding:66px 0 70px;
  border-bottom:1px solid rgba(178,58,66,.35);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,15,24,.92) 20%,rgba(7,17,28,.72) 52%,rgba(22,28,49,.36));
  z-index:0;
}
.cat-hero .grid-container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-soft);margin-bottom:28px;
}
.breadcrumb i{font-size:12px}
.breadcrumb a:hover{color:var(--cyan)}
.hero-grid{align-items:center}
.cat-hero h1{
  font-size:clamp(34px,5vw,57px);
  font-weight:800;
  letter-spacing:-1px;
  margin-bottom:18px;
  line-height:1.18;
  max-width:720px;
}
.cat-hero h1 .dot-pipe{color:var(--milan-red);margin:0 6px;font-weight:400}
.hero-lead{
  font-size:19px;line-height:1.9;
  color:#dae5ed;
  max-width:620px;
  margin-bottom:30px;
}
.hero-lead span{color:#e4efff;font-weight:600}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-panel{
  background:rgba(18,34,49,.82);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.14);
  border-radius:22px;
  padding:32px 30px;
  box-shadow:0 24px 54px rgba(0,0,0,.25);
  position:relative;
  overflow:hidden;
}
.hero-panel::after{
  content:"";position:absolute;top:0;right:0;width:120px;height:120px;
  background:radial-gradient(circle at top right,rgba(47,215,230,.16),transparent 70%);
}
.hero-panel-title{color:#fff;font-weight:700;font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px;line-height:1.4}
.hero-panel-title i{color:var(--milan-red)}
.hero-panel p{font-size:14px;color:#95aec0;margin-bottom:20px}
.panel-checklist li{
  color:#c3d4e0;padding:8px 0 8px 30px;position:relative;
  border-bottom:1px dashed rgba(255,255,255,.08);font-size:15px;line-height:1.6;
}
.panel-checklist li:last-child{border-bottom:0}
.panel-checklist li::before{
  content:"\f005";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:4px;top:11px;color:var(--milan-red);font-size:10px;
}

/* ===== Shared sections ===== */
.section-issue{
  background:linear-gradient(180deg,var(--bg-site),var(--bg-deep));
}
.issue-copy{}
.issue-list{
  display:grid;grid-template-columns:1fr;
  gap:18px;margin-top:10px;
}
.issue-item{
  background:rgba(15,31,46,.78);
  border:1px solid var(--hairline);
  border-radius:16px;
  padding:26px 26px 26px 34px;
  position:relative;
  transition:.24s;
}
.issue-item::before{
  content:"";
  width:3px;border-radius:10px;
  background:var(--milan-red);
  position:absolute;left:14px;top:26px;bottom:26px;
}
.issue-item:hover{border-color:rgba(47,215,230,.38);transform:translateY(-3px)}
.issue-index{
  color:rgba(178,58,66,.72);
  font-size:12px;font-weight:700;letter-spacing:.4em;
  margin-bottom:6px;
}
.issue-item h3{color:#fff;font-size:19px;margin-bottom:8px}
.issue-item p{font-size:15px;color:var(--ink-body);line-height:1.85}

/* ===== Light-section ===== */
.light-section{
  background:var(--marble);
  color:var(--ink-dark);
}
.light-section .sec-head h2{color:#25313d}
.light-section .sec-lead{color:#4c5662}
.light-section .card-light{
  background:rgba(255,255,255,.72);
  border:1px solid rgba(0,0,0,.04);
  box-shadow:0 8px 24px rgba(41,53,64,.08);
}

/* ===== Featured resource card ===== */
.resource-wrap{
  display:flex;
  flex-direction:column;
  gap:28px;
  margin-top:46px;
}
.feature-card{
  border-radius:26px;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.02fr 1fr;
  background:var(--bg-card);
  box-shadow:var(--shadow-card);
  border:1px solid rgba(255,255,255,.1);
}
.feature-media{position:relative;min-height:290px}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,28,40,.18),rgba(8,17,27,.06));
}
.feature-info{
  padding:clamp(30px,5%,54px);
  display:flex;flex-direction:column;justify-content:center;
}
.feature-flag{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--milan-red-soft);font-weight:600;font-size:13px;
  margin-bottom:10px;
}
.feature-flag::before{content:"";width:24px;height:2px;background:var(--milan-red)}
.feature-info h3{color:#fff;font-size:28px;line-height:1.35;margin-bottom:14px}
.feature-info p{color:var(--ink-body);font-size:16px;line-height:1.85}
.resource-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.resource-card{
  border-radius:20px;
  background:var(--bg-panel);
  border:1px solid var(--hairline);
  position:relative;
  overflow:hidden;
  padding:28px;
  display:block;
  transition:.28s;
  min-height:250px;
}
.resource-card::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--cyan));
  opacity:0;transition:.28s;
}
.resource-card:hover{
  transform:translateY(-5px);
  border-color:rgba(47,215,230,.4);
  box-shadow:0 20px 40px rgba(0,0,0,.26);
}
.resource-card:hover::after{opacity:.8}
.resource-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
}
.card-mini-img{
  width:72px;height:72px;border-radius:18px;
  object-fit:cover;
  box-shadow:0 10px 20px rgba(0,0,0,.2);
}
.card-icon{
  width:52px;height:52px;border-radius:16px;
  background:rgba(178,58,66,.16);
  border:1px solid rgba(178,58,66,.38);
  display:inline-flex;align-items:center;justify-content:center;
  color:#f6c0c4;font-size:21px;
}
.resource-card h4{color:#f2f7fb;font-size:20px;margin-bottom:10px}
.resource-card p{color:var(--ink-body);font-size:15px;line-height:1.85;margin-bottom:18px}
.card-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  background:rgba(255,255,255,.08);
  border-radius:999px;
  color:#c8d6e0;
  font-size:12px;
  padding:4px 12px;
  border:1px solid rgba(255,255,255,.06);
}
.card-foot{
  display:flex;justify-content:flex-end;margin-top:18px;
}

/* ===== Scenario ===== */
.scenario-section{background:var(--bg-deep)}
.scenario-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px;
}
.scenario-card{
  background:rgba(15,31,46,.68);
  border:1px solid var(--hairline);
  border-radius:20px;
  padding:30px 26px;
  border-top:3px solid rgba(178,58,66,.75);
  transition:.24s;
}
.scenario-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft)}
.scenario-icon{
  width:54px;height:54px;border-radius:16px;
  background:rgba(47,215,230,.12);
  border:1px solid rgba(47,215,230,.28);
  color:var(--cyan);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:21px;margin-bottom:18px;
}
.scenario-card h4{color:#fff;font-size:19px;margin-bottom:10px}
.scenario-card p{font-size:15px;line-height:1.85;color:var(--ink-body)}
.scenario-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:18px;color:var(--cyan);font-size:14px;font-weight:600;
}
.scenario-link i{font-size:12px}
.scenario-link:hover{color:#fff}

/* ===== Process ===== */
.process-tab{
  border-top:1px solid var(--hairline);
  background:var(--bg-site);
}
.steps-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;margin-top:24px.
}
.step-item{
  padding:34px 26px;
  position:relative;
}
.step-item:not(:last-child)::after{
  content:"";
  position:absolute;
  top:48px;right:0;
  width:48%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,215,230,.5),transparent);
  z-index:0;
}
.step-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.3em;
  color:var(--milan-red);
  margin-bottom:12px;
}
.step-line{
  width:32px;height:2px;background:var(--milan-red);border-radius:2px;
  margin-bottom:18px;position:relative;
}
.step-line::after{
  content:"";position:absolute;left:0;top:-3px;width:8px;height:8px;
  border-radius:50%;background:var(--milan-red);
}
.step-item h4{color:#fff;font-size:18px;margin-bottom:12px}
.step-item p{font-size:14px;color:var(--ink-soft);line-height:1.8}

/* ===== Principles / data-like band ===== */
.principles{
  background:linear-gradient(
    160deg,
    #0b2131 0%,
    #0c1e2d 42%,
    #07121d 80%
  );
  border-top:1px solid var(--hairline);
  border-bottom:1px solid var(--hairline);
}
.principle-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  grid-gap:24px;
}
.principle-item{
  padding:28px 8px 10px;
  border-right:1px solid var(--hairline);
}
.principle-item:last-child{border-right:0}
.principle-item i{
  color:var(--milan-red-soft);
  font-size:20px;
  width:42px;height:42px;
  border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(178,58,66,.15);
  margin-bottom:18px;
}
.principle-item h4{color:#eaf3f8;font-size:17px;margin-bottom:7px}
.principle-item p{color:var(--ink-body);font-size:14px;line-height:1.85}

/* ===== FAQ ===== */
.faq-wrap{padding-top:96px;padding-bottom:114px}
.faq-eyebrow{
  display:flex;align-items:center;gap:11px;color:#b51624;
  font-weight:700;letter-spacing:.1em;font-size:13px;margin-bottom:16px;
}
.faq-eyebrow::before{content:"";width:26px;height:2px;background:var(--milan-red)}
.light-section h2{color:var(--ink-dark)}
.faq-grid{
  display:grid;
  grid-template-columns:444px 1fr;
  gap:42px;
  align-items:start;
}
.faq-intro p{
  color:var(--ink-dark);opacity:.65;
  font-size:17px;line-height:1.9;
  margin-top:20px;
}
.faq-acc{
  display:grid;gap:12px;
}
.faq-item{
  background:rgba(255,255,255,.72);
  border:1px solid rgba(0,0,0,.05);
  border-left:3px solid var(--milan-red);
  border-radius:14px;
  overflow:hidden;
  box-shadow:0 4px 14px rgba(41,53,64,.06);
}
.faq-item summary{
  list-style:none;
  padding:20px 24px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  cursor:pointer;
  font-weight:600;
  color:#1b2832;
  font-size:16px;
  background:rgba(255,255,255,.2);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  content:"\f078";
  color:var(--milan-red);
  font-size:13px;
  transition:transform .25s;
  flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item .ans{
  padding:0 24px 20px;
  color:#455765;
  font-size:15px;
  line-height:1.9;
}

/* ===== CTA ===== */
.final-cta{
  position:relative;
  background-size:cover;
  background-position:center;
  background-color:#06111c;
  color:#fff;
  text-align:center;
  padding:84px 0 70px;
}
.final-cta::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,15,25,.93),rgba(5,10,17,.88));
}
.final-cta .grid-container{position:relative;z-index:1}
.final-cta .big-icon{
  width:64px;height:64px;
  border-radius:50%;
  color:var(--milan-red-soft);
  background:rgba(178,58,66,.18);
  border:1px solid rgba(178,58,66,.5);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:23px;margin-bottom:30px;
}
.final-cta h2 {
  color:#fff;font-size:clamp(25px,4vw,36px);max-width:760px;margin:0 auto 16px;
}
.final-cta p{color:#b6ccd8;font-size:17px;max-width:680px;margin:0 auto 32px}
.cta-btn-row{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.cta-btn-row .btn-secondary{color:#dce7ef;border-color:rgba(255,255,255,.35)}
.cta-btn-row .btn-secondary:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.cta-note{font-size:13px;opacity:.45;color:#fff;margin-top:25px;letter-spacing:.02em}

/* ===== Footer ===== */
.site-footer{
  background:#050d15;
  border-top:1px solid rgba(255,255,255,.09);
  color:#8fa4b5;
  padding:56px 0 0;
  font-size:14px;
}
.site-footer .brand{color:#fff;margin-bottom:17px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;

  padding-bottom:42px;
}
.footer-title{
  font-size:15px;
  color:#f0f6fa;
  font-weight:700;
  margin-bottom:20px;
  letter-spacing:.02em;
}
.footer-title::after{
  content:"";display:block;width:22px;height:2px;background:var(--milan-red);
  margin-top:8px;border-radius:2px;
}
.footer-desc{color:#93a8b8;max-width:300px;font-size:14px;line-height:1.9}
.footer-links{display:grid;gap:8px}
.footer-links a{
  display:inline-block;color:#93a8b8;transition:.2s;
  padding:3px 0;
}
.footer-links a:hover{color:var(--cyan);transform:translateX(4px)}
.footer-links i{font-size:11px}
.footer-bottom{
  border-top:1px solid var(--hairline);
  padding:17px 0 18px;
  display:flex;justify-content:space-between;gap:12px;
  flex-wrap:wrap;
  font-size:13px;color:var(--ink-soft);
}
.footer-small{opacity:.7;font-size:12px}
.legal-links{display:flex;gap:18px;flex-wrap:wrap}
.legal-links span{color:rgba(255,255,255,.35)}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .section{padding-top:78px;padding-bottom:78px}
  .issue-list{grid-template-columns:1fr}
  .feature-card{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr 1fr}
  .scenario-card:last-child{grid-column:1/-1}
  .principle-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .principle-item{border-right:0;border-top:1px solid rgba(255,255,255,.08)}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media screen and (max-width:900px){
  .hero-grid{display:block}
  .hero-panel{margin-top:34px}
  .steps-grid{grid-template-columns:1fr 1fr}
  .step-item:not(:last-child)::after{opacity:0}
  .step-item{background:rgba(15,31,46,.5);border:1px solid var(--hairline);border-radius:14px;margin:6px}
  .steps-grid{gap:12px}
}
@media screen and (max-width:767px){
  :root{--space-section:62px}
  .nav-actions .header-cta-desktop{display:none}
  .menu-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:50%;
    border:1px solid var(--hairline);background:rgba(255,255,255,.02);
    color:#d7e3ec;font-size:17px;
  }
  .channel-link,.mobile-tab-panel a{
    flex:0 0 auto;
  }
  .nav-channels-inner{overflow-x:auto}
  .mobile-tab-panel{
    display:flex;gap:8px;overflow-x:auto;
    padding:0 24px 14px;
  }
  .mobile-tab-panel a{
    color:#aebfce;font-size:14px;padding:8px 14px;
    border-radius:999px;white-space:nowrap;
    border:1px solid rgba(255,255,255,.12);
  }
  .mobile-tab-panel a.active{color:#fff;background:rgba(178,58,66,.22);border-color:rgba(178,58,66,.6)}
  .desktop-tab-links{display:none}
  .cat-hero{padding:44px 0 52px}
  .hero-panel{padding:24px}
  .resource-grid{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .scenario-card:last-child{grid-column:auto}
  .principle-grid{grid-template-columns:1fr}
  .cta-btn-row .btn{width:100%}
  .footer-bottom{justify-content:center;text-align:center}
}
@media screen and (max-width:490px){
  .breadcrumb{font-size:13px}
  .cat-hero h1{font-size:33px}
  .hero-actions .btn{width:100%}
  .hero-actions{gap:10px}
  .steps-grid{grid-template-columns:1fr}
  .resource-card{padding:24px}
  .feature-info{padding:28px 24px}
  .faq-item summary{font-size:14px;padding:17px 18px}
  .grid-container,.footer-top .grid-container,.cat-hero .grid-container{padding-left:18px;padding-right:18px}
}

/* roulang page: category3 */
:root {
  --bg-deep: #07111B;
  --bg-navy: #0B1726;
  --panel: rgba(20, 41, 61, 0.88);
  --panel-strong: #14293D;
  --line-red: #C4474F;
  --line-red-soft: rgba(196, 71, 79, 0.35);
  --cyan: #36E0FF;
  --cyan-soft: rgba(54, 224, 255, 0.14);
  --white-paper: #F3F0EA;
  --paper-soft: #E7E3DA;
  --ink: #1F2A35;
  --text-main: #DDE5EE;
  --text-weak: rgba(207, 216, 227, 0.64);
  --text-light: #F8F5EF;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-primary: 0 14px 34px rgba(0, 0, 0, 0.24);
  --shadow-card: 0 12px 26px rgba(0, 0, 0, 0.28);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-en: "Inter", "SF Pro Display", "Segoe UI", system-ui, sans-serif;
  --header-h: 62px;
  --channel-h: 46px;
  --section-pad: 92px;
}
html { scroll-behavior: smooth; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
button, input { font-family: inherit; }
::selection { background: rgba(54, 224, 255, 0.25); color: #fff; }
.grid-container { max-width: 1240px; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 26px; }
body.page-museum .section-pad { padding: var(--section-pad) 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--line-red);
  display: inline-block;
  border-radius: 3px;
}
.section-title {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.35;
  margin: 0 0 12px;
  color: #F0F3F7;
  letter-spacing: -0.02em;
}
.section-subtitle {
  color: var(--text-weak);
  font-size: 16px;
  max-width: 760px;
  margin: 0;
  line-height: 1.9;
}
.site-section { padding: var(--section-pad) 0; position: relative; }
.light-section {
  background: var(--white-paper);
  color: var(--ink);
}
.light-section .section-title { color: var(--ink); }
.light-section .section-subtitle { color: rgba(31,42,53,0.7); }
.light-section .eyebrow { color: #0F7D8C; }
.light-section .eyebrow::before { background: var(--line-red); }
::selection { background: rgba(54,224,255,0.24); color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(7, 17, 27, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 6px 24px rgba(0,0,0,0.22);
}
.nav-primary { width: 100%; }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fff;
  white-space: nowrap;
}
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(54,224,255,0.24), rgba(196,71,79,0.35));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 0 18px rgba(54,224,255,0.17);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s ease;
}
.icon-btn:hover { color: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 16px rgba(54,224,255,0.26); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: 0.2s ease;
}
.btn-sm { height: 36px; padding: 0 18px; font-size: 13px; }
.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border-color: rgba(255,255,255,0.26);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(54,224,255,0.08); }
.menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s ease;
}
.menu-toggle:hover { background: rgba(255,255,255,0.14); }
.nav-channels { border-top: 1px solid rgba(8,20,31,0.88); background: rgba(10, 22, 34, 0.96); }
.nav-channels-inner {
  display: flex;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  min-height: var(--channel-h);
  gap: 8px;
}
.nav-channels-inner::-webkit-scrollbar { display: none; }
.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 18px 9px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(221,229,238,0.76);
  border-radius: 999px;
  position: relative;
  transition: color 0.2s ease, background 0.2s ease;
}
.channel-link i, .channel-link svg { font-size: 14px; color: rgba(221,229,238,0.62); transition: color 0.2s; }
.channel-link:hover { color: #fff; background: rgba(255,255,255,0.05); }
.channel-link.active { color: #fff; background: rgba(54,224,255,0.1); }
.channel-link.active::after {
  content: "";
  height: 2px;
  border-radius: 4px;
  width: 24px;
  background: var(--line-red);
  position: absolute;
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 10px rgba(196,71,79,0.32);
}
.channel-link.active i { color: var(--cyan); }
.mobile-tab-panel {
  display: none;
  padding: 10px 16px 16px;
  gap: 6px;
  border-top: 1px solid rgba(255,255,255,0.07);
}
.mobile-tab-panel.open { display: block; }
.mobile-tab-panel a {
  display: flex;
  align-items: center;
  padding: 11px 12px;
  border-radius: 10px;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  transition: 0.2s ease;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-tab-panel a:last-child { border-bottom: none; }
.mobile-tab-panel a:hover { background: rgba(255,255,255,0.07); color: #fff; }
.mobile-tab-panel a.active { background: rgba(54,224,255,0.11); color: #fff; }

/* ---------- Category Hero ---------- */
.hero-cat {
  position: relative;
  overflow: hidden;
  padding: 76px 0 82px;
  background: var(--bg-deep);
}
.hero-cat .cat-bg {
  position: absolute;
  inset: 0;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0.47;
}
.hero-cat .cat-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(7,17,27,0.98) 0%, rgba(8,21,34,0.9) 46%, rgba(11,32,48,0.58) 100%);
}
.hero-cat .container { position: relative; z-index: 3; }
.crumb {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-weak);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.09);
}
.crumb a { color: var(--text-weak); }
.crumb a:hover { color: var(--cyan); }
.crumb i { font-size: 10px; margin-top: -1px; color: rgba(255,255,255,0.28); }
.crumb .current { color: var(--text-main); }
.hero-cat-copy { padding-right: 18px; }
.hero-cat h1 {
  font-size: clamp(30px, 4.5vw, 50px);
  font-weight: 800;
  line-height: 1.28;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  color: #fff;
}
.hero-cat h1 .highlight {
  color: var(--cyan);
}
.hero-lead {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255,255,255,0.7);
  max-width: 580px;
  margin: 0 0 28px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-primary {
  background: linear-gradient(165deg, rgba(54,224,255,0.95), rgba(16,210,255,0.85));
  color: #05242E;
  border: 1px solid rgba(54,224,255,0.4);
  height: 44px;
  padding: 0 25px;
  font-size: 14px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 0 22px rgba(54,224,255,0.22), 0 10px 34px rgba(54,224,255,0.1);
  transition: all 0.22s ease;
}
.btn-primary:hover { color: #021318; transform: translateY(-2px); box-shadow: 0 0 32px rgba(54,224,255,0.32), 0 14px 42px rgba(54,224,255,0.14); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.23);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}
.btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,0.12); box-shadow: 0 6px 18px rgba(0,0,0,0.18); }
.hero-panel {
  border-radius: 24px;
  padding: 18px 18px 12px;
  background: rgba(13, 31, 47, 0.68);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.3);
  color: #fff;
}
.hero-panel img { border-radius: 14px; margin-bottom: 14px; }
.panel-caption {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 14px 4px 8px;
}
.panel-caption .caption-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.panel-caption .caption-sub { font-size: 12px; color: rgba(255,255,255,0.7); }
.panel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 4px 12px;
}
.mini-tag {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  color: rgba(255,255,255,0.75);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.12);
}

/* ---------- Intro tone ---------- */
.intro-pane {
  padding: var(--section-pad) 0;
  background: linear-gradient(180deg, #07111B 0%, #0A1724 100%);
}
.intro-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 56px; }
.intro-lede h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: #F0F3F7; line-height: 1.4; margin: 0 0 18px; }
.intro-lede p { color: rgba(207,216,227,0.68); font-size: 16px; line-height: 2; margin: 0; }
.intro-points { display: flex; flex-direction: column; gap: 18px; }
.tone-item {
  display: flex;
  gap: 18px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(20, 41, 61, 0.56);
  border: 1px solid rgba(255,255,255,0.06);
  transition: border 0.2s ease, background 0.2s ease;
}
.tone-item:hover { border-color: rgba(54,224,255,0.3); background: rgba(20, 41, 61, 0.8); }
.tone-index { font-family: var(--font-en); color: var(--line-red); font-size: 12px; font-weight: 800; letter-spacing: 0.05em; width: 32px; flex: 0 0 32px; line-height: 1.6; padding-top: 4px; border-top: 2px solid var(--line-red); }
.tone-body h3 { font-size: 17px; color: #fff; font-weight: 700; margin: 0 0 6px; display: flex; align-items: center; gap: 8px; }
.tone-body p { font-size: 14px; color: rgba(207,216,227,0.66); line-height: 1.8; margin: 0; }
.tone-body h3 i { color: var(--line-red); font-size: 14px; }

/* ---------- Light entries ---------- */
.category-entries { background: var(--white-paper); color: var(--ink); padding: var(--section-pad) 0; }
.light-head { max-width: 740px; margin-bottom: 36px; }
.light-head h2 { color: var(--ink); font-size: clamp(28px, 3.6vw, 38px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.light-head p { color: rgba(31, 42, 53, 0.67); font-size: 16px; line-height: 1.9; }
.entry-feature {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(31, 42, 53, 0.09);
  box-shadow: 0 16px 30px rgba(31, 42, 53, 0.08);
  overflow: hidden;
}
.entry-feature-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 0; }
.entry-feature-copy { padding: 40px 42px; }
.entry-feature-copy .kicker { font-size: 12px; color: var(--line-red); font-weight: 700; letter-spacing: 0.1em; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.entry-feature-copy .kicker::before { content: ""; width: 22px; height: 2px; background: var(--line-red); display: inline-block; }
.entry-feature-copy h3 { font-size: 24px; font-weight: 800; color: var(--ink); margin: 0 0 12px; }
.entry-feature-copy p { color: rgba(31,42,53,0.7); font-size: 15px; line-height: 1.9; margin: 0 0 18px; }
.entry-tick { margin-top: 10px; display: flex; flex-direction: column; gap: 10px; }
.entry-tick li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: rgba(31,42,53,0.82); }
.entry-tick li i { color: #1A8C9B; font-size: 14px; margin-top: 5px; }
.entry-feature-media { min-height: 100%; background: #dfe2e2; position: relative; }
.entry-feature-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.entry-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; }
.entry-card {
  background: rgba(255,255,255,0.8);
  border: 1px solid rgba(31,42,53,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 26px;
  box-shadow: 0 8px 20px rgba(31,42,53,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.entry-card:hover { transform: translateY(-4px); box-shadow: 0 18px 32px rgba(31,42,53,0.12); border-color: rgba(31,42,53,0.18); }
.entry-card-media { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 18px; }
.entry-card-media img { width: 100%; height: 168px; object-fit: cover; }
.entry-card h4 { font-size: 18px; font-weight: 800; color: var(--ink); margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
.entry-card h4 i { color: var(--line-red); font-size: 15px; }
.entry-card p { font-size: 14px; color: rgba(31,42,53,0.7); line-height: 1.85; margin: 0 0 13px; }
.entry-card .entry-list { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.entry-card .entry-list li { position: relative; padding-left: 20px; font-size: 13px; color: rgba(31,42,53,0.76); line-height: 1.7; }
.entry-card .entry-list li::before { content: ""; left: 2px; top: 10px; position: absolute; width: 7px; height: 7px; border-radius: 2px; background: var(--line-red); }

/* ---------- Audience section ---------- */
.audience-section {
  padding: var(--section-pad) 0;
  position: relative;
  background: #0A1724;
  overflow: hidden;
}
.audience-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-position: center;
  background-size: cover;
  opacity: 0.24;
}
.audience-section .container { position: relative; z-index: 2; }
.audience-head { max-width: 680px; margin-bottom: 36px; }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.audience-card {
  background: rgba(20, 41, 61, 0.62);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: 0.2s ease;
  backdrop-filter: blur(5px);
}
.audience-card:hover { border-color: rgba(54,224,255,0.28); background: rgba(20, 41, 61, 0.88); transform: translateY(-4px); }
.audience-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(196,71,79,0.16), rgba(54,224,255,0.12));
  border: 1px solid rgba(196,71,79,0.3);
  align-items: center;
  justify-content: center;
  display: inline-flex;
  color: var(--cyan);
  font-size: 20px;
  margin-bottom: 18px;
}
.audience-card h3 { font-size: 18px; font-weight: 800; color: #fff; margin: 0 0 10px; }
.audience-card p { font-size: 14px; line-height: 1.8; color: rgba(207,216,227,0.68); margin: 0 0 14px; }
.audience-card ul { display: flex; flex-direction: column; gap: 7px; }
.audience-card ul li { font-size: 13px; color: rgba(207,216,227,0.74); position: relative; padding-left: 19px; }
.audience-card ul li::before { content: "·"; position: absolute; left: 6px; color: var(--cyan); font-weight: 800; font-size: 21px; line-height: 0.8; top: 3px; }

/* ---------- Process route ---------- */
.route-section { padding: var(--section-pad) 0; background: #07111B; }
.route-head { max-width: 680px; margin-bottom: 44px; }
.route-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: route; }
.route-step {
  padding: 24px 20px;
  border-radius: var(--radius-md);
  background: rgba(11, 23, 38, 0.8);
  border: 1px solid rgba(255,255,255,0.07);
  transition: 0.2s ease;
  position: relative;
}
.route-step:hover { border-color: rgba(54,224,255,0.24); }
.route-step-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line-red);
  color: var(--line-red);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  background: rgba(196,71,79,0.1);
  margin-bottom: 16px;
}
.route-step h3 { color: #fff; font-size: 15px; font-weight: 700; margin: 0 0 8px; }
.route-step p { color: rgba(207,216,227,0.62); font-size: 13px; line-height: 1.75; margin: 0; }

/* ---------- FAQ ---------- */
.faq-section { padding: var(--section-pad) 0; background: #07111B; }
.faq-section .container { max-width: 820px; }
.faq-head { text-align: center; margin-bottom: 38px; }
.faq-head h2 { font-size: clamp(26px, 3.4vw, 34px); font-weight: 800; }
.faq-head p { color: var(--text-weak); }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: rgba(20, 41, 61, 0.72);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: 0.2s ease;
}
.faq-item.open { background: rgba(20, 41, 61, 0.9); border-color: rgba(196,71,79,0.3); }
.faq-q { margin: 0; }
.faq-toggle {
  background: transparent;
  border: 0;
  width: 100%;
  text-align: left;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 18px 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: color 0.2s ease;
}
.faq-toggle:hover { color: #fff; }
.faq-toggle i {
  color: var(--line-red);
  font-size: 13px;
  transition: transform 0.3s ease;
  margin-left: auto;
}
.faq-item.open .faq-toggle i { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s ease;
}
.faq-a-inner { padding: 0 23px 18px; color: rgba(207, 216, 227, 0.72); font-size: 14px; line-height: 1.9; }
.faq-item.open .faq-a { max-height: 320px; }

/* ---------- CTA ---------- */
.cta-section {
  padding: var(--section-pad) 0 96px;
  position: relative;
  overflow: hidden;
  background-color: #0A1724;
}
.cta-section .cta-bg {
  background-image: url('/assets/images/backpic/back-3.webp');
  background-position: center;
  background-size: cover;
  position: absolute;
  inset: 0;
  opacity: 0.48;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-panel {
  max-width: 830px;
  margin: 0 auto;
  text-align: center;
  border-radius: 28px;
  background: rgba(7, 17, 27, 0.48);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: clamp(30px, 6vw, 64px) clamp(20px, 5vw, 56px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.23);
}
.cta-panel h2 { color: #fff; font-size: clamp(26px, 4vw, 38px); font-weight: 800; margin: 0 0 14px; line-height: 1.35; }
.cta-panel p { max-width: 580px; margin: 0 auto 30px; color: rgba(255,255,255,0.68); font-size: 15px; line-height: 1.9; }
.cta-actions { display: inline-flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: center; }
.btn-white {
  background: var(--white-paper);
  color: var(--ink);
  border: 1px solid var(--white-paper);
  height: 44px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.22s ease;
}
.btn-white:hover { background: #fff; transform: translateY(-2px); box-shadow: 0 14px 30px rgba(0,0,0,0.12); }
.cta-note { margin-top: 20px; color: rgba(255,255,255,0.5); font-size: 12px; letter-spacing: 0.03em; }

/* ---------- Footer ---------- */
.site-footer {
  background: #050C13;
  padding: 74px 0 30px;
  border-top: 1px solid rgba(255,255,255,0.06);
  color: rgba(221, 229, 238, 0.82);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
  gap: 42px;
  padding-bottom: 44px;
}
.footer-grid .brand { font-size: 19px; margin-bottom: 14px; }
.footer-grid .brand-icon { width: 32px; height: 32px; border-radius: 9px; font-size: 14px; }
.footer-desc { font-size: 14px; line-height: 1.9; color: rgba(221,229,238,0.62); max-width: 300px; margin-top: 14px; }
.footer-title {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: 0.08em;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  color: rgba(221,229,238,0.64);
  font-size: 14px;
  transition: 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.footer-links a:hover { color: var(--cyan); transform: translateX(3px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(221,229,238,0.42);
  font-size: 12px;
  gap: 18px;
  flex-wrap: wrap;
}
.legal-links { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-small { font-size: 12px; }

/* ---------- Focus and states ---------- */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 5px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --section-pad: 72px; }
  .intro-grid { gap: 40px; }
  .audience-grid { grid-template-columns: 1fr 1fr; }
  .route-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 900px) {
  .nav-channels-inner { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-cta-desktop { display: none; }
  .hero-cat { padding: 64px 0 72px; }
  .mobile-tab-panel.open { display: flex; flex-direction: column; }
}
@media (max-width: 768px) {
  :root { --section-pad: 58px; }
  .brand { font-size: 18px; }
  .brand-icon { width: 31px; height: 31px; border-radius: 9px; }
  .nav-inner { min-height: 58px; }
  .intro-grid { grid-template-columns: 1fr; }
  .entry-feature-inner { grid-template-columns: 1fr; }
  .entry-feature-media img { position: relative; min-height: 190px; inset: auto; }
  .entry-feature-media { min-height: auto; }
  .entry-pair { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .route-grid { grid-template-columns: 1fr; }
  .cta-panel { padding: 34px 24px; }
  .hero-cat h1 { font-size: 34px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .cfooter-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .container, .grid-container { padding-left: 20px; padding-right: 20px; }
  .brand-icon { display: none; }
  .brand { font-size: 17px; }
  .hero-cat h1 { font-size: 28px; }
  .section-pad, .site-section { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .entry-feature-copy { padding: 28px 24px; }
}

/* roulang page: category4 */
:root {
      --bg: #07111B;
      --bg-2: #0B1726;
      --panel: #101F2F;
      --panel-2: #14293D;
      --marble: #E7E3DA;
      --body-text: #CFD8E3;
      --muted: rgba(207, 216, 227, .64);
      --red: #B23A42;
      --red-dark: #8E2A34;
      --cyan: #36E0FF;
      --cyan-soft: rgba(54, 224, 255, .16);
      --stroke: rgba(255, 255, 255, .08);
      --stroke-strong: rgba(255, 255, 255, .16);
      --radius: 16px;
      --radius-lg: 24px;
      --shadow: 0 18px 50px rgba(0, 0, 0, .32);
      --transition: all .2s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
      background: var(--bg);
      color: var(--body-text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

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

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

    button, input {
      font-family: inherit;
    }

    h1, h2, h3, h4, h5, p, figure, ul {
      margin: 0;
      padding: 0;
    }

    ul {
      list-style: none;
    }

    .grid-container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    ::selection {
      background: rgba(54, 224, 255, .28);
      color: #fff;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(7, 17, 27, .94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--stroke);
    }

    .nav-primary {
      min-height: 64px;
      border-bottom: 1px solid rgba(255, 255, 255, .04);
    }

    .nav-inner {
      min-height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 800;
      font-size: 21px;
      letter-spacing: .02em;
      white-space: nowrap;
    }

    .brand-icon {
      flex: 0 0 auto;
      width: 38px;
      height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      background: linear-gradient(145deg, rgba(54,224,255,.2), rgba(178,58,66,.12));
      color: var(--cyan);
      border: 1px solid rgba(54,224,255,.24);
      font-size: 16px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .icon-btn {
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(255, 255, 255, .04);
      color: var(--body-text);
      border: 1px solid var(--stroke);
      cursor: pointer;
      transition: var(--transition);
    }

    .icon-btn:hover {
      color: var(--cyan);
      border-color: rgba(54, 224, 255, .4);
      box-shadow: 0 0 0 3px rgba(54, 224, 255, .08);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 999px;
      font-weight: 600;
      border: 0;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn:focus-visible, .icon-btn:focus-visible, .channel-link:focus-visible, .menu-toggle:focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }

    .btn-sm {
      padding: 9px 18px;
      font-size: 14px;
    }

    .btn-ghost {
      background: rgba(255, 255, 255, .05);
      border: 1px solid var(--stroke-strong);
      color: var(--body-text);
    }

    .btn-ghost:hover {
      color: #fff;
      border-color: rgba(178, 58, 66, .72);
      background: rgba(178, 58, 66, .12);
    }

    .menu-toggle {
      width: 44px;
      height: 44px;
      display: none;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      border: 1px solid var(--stroke);
      background: rgba(255,255,255,.05);
      color: #fff;
      cursor: pointer;
      font-size: 18px;
    }

    .nav-channels {
      background: rgba(10, 24, 37, .92);
      border-top: 1px solid rgba(255,255,255,.03);
    }

    .nav-channels-inner {
      display: flex;
      align-items: center;
      gap: 4px;
      min-height: 46px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .nav-channels-inner::-webkit-scrollbar {
      display: none;
    }

    .channel-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 15px;
      font-size: 14px;
      color: rgba(207, 216, 227, .72);
      border-radius: 8px;
      white-space: nowrap;
      transition: var(--transition);
    }

    .channel-link i {
      color: rgba(207, 216, 227, .56);
      transition: var(--transition);
    }

    .channel-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, .04);
    }

    .channel-link.active {
      color: #fff;
      font-weight: 600;
    }

    .channel-link.active::after {
      content: "";
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 2px;
      height: 2px;
      border-radius: 2px;
      background: var(--red);
    }

    .mobile-tab-panel {
      display: none;
      padding-top: 6px;
      padding-bottom: 18px;
    }

    .mobile-tab-panel a {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 12px;
      border-radius: 12px;
      color: rgba(207, 216, 227, .78);
      font-size: 15px;
      margin-bottom: 6px;
      background: rgba(255, 255, 255, .03);
    }

    .mobile-tab-panel a:hover {
      background: rgba(178, 58, 66, .14);
      color: #fff;
    }

    .mobile-tab-panel a.active {
      background: rgba(178, 58, 66, .18);
      color: #fff;
      border-left: 3px solid var(--red);
    }

    main {
      background: var(--bg);
    }

    .category-banner {
      position: relative;
      overflow: hidden;
      padding: 82px 0 92px;
      background-color: var(--bg);
      background-image:
        linear-gradient(90deg, rgba(7, 17, 27, .92) 0%, rgba(7, 17, 27, .72) 47%, rgba(7, 17, 27, .62) 100%),
        url('/assets/images/backpic/back-1.webp');
      background-position: center;
      background-size: cover;
    }

    .banner-inner {
      display: flex;
      align-items: center;
      gap: 36px;
    }

    .banner-copy {
      flex: 0 0 55%;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .18em;
      text-transform: uppercase;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      display: inline-block;
      width: 24px;
      height: 2px;
      background: var(--red);
      border-radius: 2px;
      opacity: .9;
    }

    .category-banner h1 {
      font-size: 48px;
      line-height: 1.18;
      color: #fff;
      font-weight: 800;
      letter-spacing: -.01em;
      margin-bottom: 16px;
    }

    .red-accent {
      color: var(--red);
      font-weight: 800;
    }

    .category-banner .lead {
      max-width: 660px;
      color: rgba(207, 216, 227, .8);
      font-size: 17px;
      line-height: 1.9;
      margin-bottom: 30px;
    }

    .banner-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 18px;
    }

    .btn-glow {
      background: linear-gradient(180deg, var(--cyan) 0%, #20B8D6 100%);
      color: #061017;
      box-shadow: 0 0 0 1px rgba(54, 224, 255, .4), 0 0 22px rgba(54, 224, 255, .18);
    }

    .btn-glow:hover {
      transform: translateX(2px);
      box-shadow: 0 0 0 1px rgba(54, 224, 255, .6), 0 0 30px rgba(54, 224, 255, .3);
      color: #061017;
    }

    .btn-dark {
      padding: 15px 30px;
      font-size: 16px;
    }

    .btn-text {
      color: rgba(207, 216, 227, .8);
      font-weight: 600;
      padding: 14px 0;
      border-bottom: 1px solid transparent;
    }

    .btn-text:hover {
      color: var(--cyan);
      border-bottom-color: rgba(54, 224, 255, .45);
    }

    .glass-panel {
      flex: 0 1 45%;
      background: rgba(16, 31, 47, .78);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid rgba(255, 255, 255, .08);
      box-shadow: var(--shadow);
    }

    .panel-title {
      color: #fff;
      font-weight: 700;
      font-size: 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--stroke);
      margin-bottom: 12px;
    }

    .quick-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid var(--stroke);
      color: var(--body-text);
      padding: 7px 12px;
      border-radius: 999px;
      font-size: 13px;
    }

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

    .intro-section, .directory-section, .steps-section, .faq-section, .cta-section {
      padding: 92px 0;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
      gap: 28px;
    }

    .semi-panel {
      background: rgba(16, 31, 47, .88);
      border-radius: var(--radius-lg);
      padding: 34px;
      border-top: 2px solid var(--red);
      box-shadow: var(--shadow);
    }

    .semi-panel h2, .section-title {
      color: #fff;
      font-size: 30px;
      line-height: 1.35;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .semi-panel p, .dir-feature-card p, .dir-card p, .steps-card p {
      color: var(--body-text);
    }

    .value-points {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .value-point {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: rgba(207, 216, 227, .9);
      font-size: 15px;
    }

    .value-point i {
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: var(--cyan);
      background: rgba(54, 224, 255, .1);
      border: 1px solid rgba(54, 224, 255, .2);
      font-size: 13px;
    }

    .scene-panel {
      background: rgba(255, 255, 255, .04);
      border-radius: var(--radius-lg);
      padding: 30px 28px;
      border: 1px solid var(--stroke);
    }

    .scene-panel .eyebrow {
      margin-bottom: 10px;
    }

    .scene-list {
      margin-top: 18px;
    }

    .scene-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 15px 12px;
      border-bottom: 1px solid var(--stroke);
      color: rgba(207, 216, 227, .86);
      transition: var(--transition);
    }

    .scene-item:last-child {
      border-bottom: 0;
    }

    .scene-item:hover {
      padding-left: 18px;
      color: #fff;
    }

    .scene-item .index {
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      border: 1px solid var(--red);
      color: var(--red);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 700;
    }

    .section-heading {
      margin-bottom: 36px;
    }

    .section-heading .eyebrow {
      margin-bottom: 10px;
    }

    .section-heading p {
      color: rgba(207, 216, 227, .68);
      max-width: 740px;
    }

    .section-heading h2 {
      color: #fff;
      font-size: 32px;
      line-height: 1.34;
      font-weight: 700;
    }

    .dir-feature-card {
      position: relative;
      overflow: hidden;
      border-radius: 20px;
      min-height: 300px;
      display: flex;
      align-items: flex-end;
      padding: 28px;
      background-image: url('/assets/images/coverpic/cover-5.png');
      background-size: cover;
      background-position: center;
    }

    .dir-feature-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(7, 17, 27, .1) 0%, rgba(7, 17, 27, .86) 100%);
    }

    .dir-feature-card .card-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
    }

    .dir-feature-card h3, .dir-card h3 {
      font-size: 22px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .dir-feature-card p, .dir-card p {
      font-size: 15px;
      color: rgba(255, 255, 255, .76);
    }

    .dir-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr);
      gap: 24px;
      margin-top: 24px;
    }

    .dir-card {
      min-height: 260px;
      background: rgba(20, 41, 61, .86);
      border: 1px solid var(--stroke);
      border-radius: 18px;
      padding: 24px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .dir-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 64px;
      height: 2px;
      background: var(--red);
      border-radius: 2px;
    }

    .dir-card:hover {
      transform: translateY(-3px);
      border-color: rgba(54, 224, 255, .35);
      box-shadow: 0 10px 28px rgba(0, 0, 0, .24), inset 0 0 0 1px rgba(54, 224, 255, .05);
    }

    .dir-card.no-bg {
      background-image:
        linear-gradient(120deg, rgba(16, 31, 47, .82), rgba(20, 41, 61, .92)),
        url('/assets/images/coverpic/cover-1.png');
      background-size: cover;
      background-position: center;
    }

    .dir-card.no-bg-2 {
      background-image:
        linear-gradient(120deg, rgba(10, 24, 37, .9), rgba(7, 17, 27, .84)),
        url('/assets/images/coverpic/cover-7.webp');
      background-size: cover;
      background-position: center;
    }

    .dir-mini-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .dir-mini-card {
      color: var(--body-text);
      padding: 16px 18px;
      border-left: 2px solid var(--red);
      background: rgba(16, 31, 47, .9);
      border-radius: 12px;
      transition: var(--transition);
    }

    .dir-mini-card:hover {
      background: rgba(178, 58, 66, .14);
      transform: translateX(4px);
    }

    .dir-mini-card strong {
      display: block;
      margin-bottom: 4px;
      color: #fff;
      font-size: 15px;
    }

    .dir-mini-card span {
      font-size: 13px;
      color: rgba(207, 216, 227, .66);
    }

    .steps-section {
      background: var(--bg-2);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .02);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .steps-card {
      background: rgba(255, 255, 255, .04);
      border: 1px solid var(--stroke);
      border-radius: 18px;
      padding: 26px 22px;
      position: relative;
    }

    .step-no {
      font-size: 13px;
      font-weight: 700;
      color: var(--red);
      letter-spacing: .1em;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
    }

    .step-no::before {
      content: "";
      width: 18px;
      height: 1px;
      display: inline-block;
      background: var(--red);
    }

    .steps-card h3 {
      color: #fff;
      font-size: 18px;
      margin-bottom: 10px;
      font-weight: 600;
    }

    .steps-card p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(207, 216, 227, .68);
    }

    .faq-section {
      background: var(--marble);
      color: var(--bg);
    }

    .faq-section .section-heading h2 {
      color: var(--bg);
    }

    .faq-section .section-heading p {
      color: rgba(31, 42, 53, .7);
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px 28px;
      align-items: start;
    }

    .faq-item {
      background: rgba(255, 255, 255, .62);
      border-radius: 14px;
      border: 1px solid rgba(127, 97, 81, .16);
      overflow: hidden;
    }

    .faq-q {
      width: 100%;
      background: transparent;
      border: 0;
      padding: 18px 18px 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--bg);
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      text-align: left;
      line-height: 1.55;
    }

    .faq-q i {
      color: var(--red);
      font-size: 14px;
      transition: transform .25s ease;
      margin-left: 14px;
      flex: 0 0 auto;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .28s ease;
      padding-left: 18px;
      padding-right: 18px;
    }

    .faq-answer-inner {
      padding-bottom: 18px;
      color: rgba(31, 42, 53, .78);
      font-size: 15px;
      line-height: 1.85;
    }

    .cta-section {
      padding: 100px 0;
      background-image:
        linear-gradient(90deg, rgba(7, 17, 27, .88), rgba(7, 17, 27, .68)),
        url('/assets/images/backpic/back-3.webp');
      background-position: center;
      background-size: cover;
    }

    .cta-box {
      max-width: 780px;
      margin: 0 auto;
      text-align: center;
    }

    .cta-box h2 {
      color: #fff;
      font-size: 36px;
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .cta-box p {
      color: rgba(207, 216, 227, .72);
      margin-bottom: 30px;
    }

    .cta-note {
      margin-top: 20px;
      font-size: 13px;
      color: rgba(207, 216, 227, .48);
    }

    .back-to-top {
      position: absolute;
      right: 20px;
      top: -34px;
      width: 36px;
      height: 36px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.16);
      border-radius: 50%;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      transition: var(--transition);
    }

    .back-to-top:hover {
      background: var(--red);
      color: #fff;
    }

    .site-footer {
      position: relative;
      background: #050D16;
      padding: 70px 0 30px;
      color: rgba(207, 216, 227, .66);
      font-size: 14px;
      border-top: 1px solid rgba(255,255,255,.04);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr .8fr .8fr 1fr;
      gap: 30px;
    }
    .footer-desc {
      margin-top: 14px;
      color: rgba(207, 216, 227, .6);
      max-width: 300px;
      line-height: 1.8;
    }
    .footer-title {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: rgba(207, 216, 227, .66);
      font-size: 14px;
    }
    .footer-links a:hover, .footer-bottom a:hover {
      color: var(--cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.06);
      margin-top: 42px;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      color: rgba(207, 216, 227, .44);
      font-size: 13px;
    }
    .legal-links {
      display: flex;
      gap: 14px;
    }

    @media (max-width: 1024px) {
      .category-banner h1 {
        font-size: 42px;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .faq-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-cta-desktop {
        display: none;
      }
      .menu-toggle {
        display: inline-flex;
      }
      .nav-channels-inner {
        display: none;
      }
      .mobile-tab-panel.open {
        display: block;
      }
      .category-banner {
        padding: 58px 0 68px;
      }
      .banner-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
      }
      .banner-copy, .glass-panel {
        flex: 0 0 auto;
        width: 100%;
      }
      .category-banner h1 {
        font-size: 34px;
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .dir-grid {
        grid-template-columns: 1fr;
      }
      .steps-section, .faq-section, .cta-section, .intro-section, .directory-section {
        padding: 62px 0;
      }
      .cta-box h2 {
        font-size: 30px;
      }
      .section-heading h2 {
        font-size: 27px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        gap: 14px;
      }
    }

    @media (max-width: 520px) {
      .grid-container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .brand {
        font-size: 17px;
      }
      .category-banner h1 {
        font-size: 29px;
      }
      .category-banner .lead {
        font-size: 15px;
      }
      .semi-panel {
        padding: 24px;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .faq-q {
        font-size: 14px;
      }
      .btn-dark {
        padding: 14px 22px;
      }
    }