/* roulang page: index */
:root{
  --bg:#050a16;
  --bg-soft:#081226;
  --bg-deep:#03060f;
  --panel:rgba(18,31,58,.66);
  --panel-strong:rgba(22,38,70,.9);
  --line:rgba(122,163,255,.16);
  --line-strong:rgba(122,163,255,.32);
  --text:#e9eeff;
  --muted:#93a5c8;
  --muted-2:#6f81a6;
  --primary:#3d7bff;
  --primary-deep:#2a5cf0;
  --cyan:#22d3ee;
  --violet:#7c5cff;
  --gold:#ffcf6b;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-sm:0 6px 18px rgba(3,8,20,.45);
  --shadow:0 18px 48px rgba(3,8,20,.6);
  --glow:0 0 0 1px rgba(61,123,255,.4),0 14px 42px rgba(45,110,255,.38);
  --glow-cyan:0 0 0 1px rgba(34,211,238,.4),0 12px 38px rgba(34,211,238,.28);
  --gap:28px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  background:
    radial-gradient(1100px 620px at 12% -8%,rgba(61,123,255,.22),transparent 62%),
    radial-gradient(900px 560px at 92% 4%,rgba(124,92,255,.18),transparent 60%),
    linear-gradient(180deg,#050a16 0%,#040814 55%,#03060f 100%);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cyan);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

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

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.3px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
  color:#fff;
  box-shadow:var(--glow);
}
.btn-glow:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(34,211,238,.55),0 18px 50px rgba(61,123,255,.5);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(122,163,255,.08);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{background:rgba(61,123,255,.18);border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);}
.btn-cyan{
  background:linear-gradient(135deg,var(--cyan),#3d7bff);
  color:#04121f;
  font-weight:700;
  box-shadow:var(--glow-cyan);
}
.btn-cyan:hover{transform:translateY(-2px);color:#04121f;}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}

/* ---------- badges / tags ---------- */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:rgba(34,211,238,.12);
  border:1px solid rgba(34,211,238,.3);
  color:#8ceaf8;
  font-size:12.5px;
  letter-spacing:.6px;
}
.tag{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  background:rgba(122,163,255,.1);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:12.5px;
  transition:all .2s ease;
}
.tag:hover{background:rgba(61,123,255,.22);color:#cfe0ff;border-color:var(--line-strong);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  backdrop-filter:blur(18px);
  background:rgba(5,10,22,.78);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:70px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;
  font-weight:800;
  font-size:17px;
  box-shadow:var(--glow-cyan);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:#fff;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  padding:9px 15px;
  border-radius:var(--radius-pill);
  font-size:15px;
  color:var(--muted);
  transition:all .2s ease;
}
.main-nav a:hover{color:#fff;background:rgba(61,123,255,.14);}
.main-nav a.active{
  color:#fff;
  background:rgba(61,123,255,.2);
  box-shadow:inset 0 0 0 1px rgba(61,123,255,.45);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.lang-switch{
  display:flex;
  align-items:center;
  padding:3px;
  border-radius:var(--radius-pill);
  background:rgba(122,163,255,.1);
  border:1px solid var(--line);
}
.lang-btn{
  border:none;
  background:transparent;
  color:var(--muted);
  font-size:12.5px;
  padding:5px 13px;
  border-radius:var(--radius-pill);
  cursor:pointer;
  transition:all .2s ease;
}
.lang-btn.active{background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;box-shadow:0 4px 14px rgba(61,123,255,.45);}
.lang-btn:hover{color:#fff;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  background:rgba(122,163,255,.1);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(6,12,26,.97);
  padding:16px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  color:var(--muted);
  font-size:15.5px;
  margin-bottom:6px;
}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(61,123,255,.16);color:#fff;}

/* ---------- hero ---------- */
.hero{padding:46px 0 8px;}
.hero-cover{
  position:relative;
  height:230px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:
    radial-gradient(520px 260px at 18% 20%,rgba(34,211,238,.4),transparent 65%),
    radial-gradient(620px 320px at 82% 10%,rgba(124,92,255,.44),transparent 68%),
    linear-gradient(135deg,#0b1830 0%,#101d3c 50%,#0a1226 100%);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.hero-cover::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,180,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,180,255,.055) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.cover-inner{
  position:relative;
  z-index:2;
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:22px 26px;
}
.cover-tags{display:flex;flex-wrap:wrap;gap:8px;}
.cover-foot{display:flex;flex-wrap:wrap;gap:22px;color:#c7d7f7;font-size:13.5px;}
.cover-foot span{display:inline-flex;align-items:center;gap:7px;}
.hero-body{
  position:relative;
  z-index:3;
  margin-top:-52px;
  display:flex;
  align-items:flex-end;
  gap:22px;
  padding:0 26px;
  flex-wrap:wrap;
}
.hero-avatar{
  width:104px;height:104px;
  flex-shrink:0;
  border-radius:26px;
  display:grid;place-items:center;
  font-size:40px;
  font-weight:800;
  color:#04121f;
  background:linear-gradient(140deg,var(--cyan),var(--primary) 60%,var(--violet));
  box-shadow:0 0 0 5px rgba(5,10,22,.9),var(--glow-cyan);
}
.hero-id{flex:1;min-width:260px;}
.hero-id h1{
  font-size:clamp(23px,3.3vw,38px);
  line-height:1.32;
  font-weight:800;
  letter-spacing:.4px;
  color:#fff;
  margin-bottom:10px;
}
.hero-sub{
  color:#a9bde2;
  font-size:15.5px;
  max-width:660px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:16px;
}
.stat-chip{
  display:flex;
  align-items:baseline;
  gap:6px;
  padding:8px 14px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.stat-chip b{font-size:17px;color:#fff;font-weight:800;}
.stat-chip span{font-size:12.5px;color:var(--muted);}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;padding-bottom:6px;}
.hero-intro{
  margin-top:30px;
  padding:26px 28px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  color:#b9cae9;
  font-size:15.5px;
  box-shadow:var(--shadow-sm);
}
.hero-intro strong{color:#fff;}

/* ---------- sections ---------- */
.section{padding:62px 0;}
.section-alt{background:linear-gradient(180deg,rgba(9,17,34,.7),rgba(5,10,22,0));}
.section-head{max-width:780px;margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:1.6px;
  color:var(--cyan);
  text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);}
.section-head h2{
  font-size:clamp(21px,2.6vw,30px);
  font-weight:800;
  line-height:1.4;
  color:#fff;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px;}

/* ---------- panels / cards ---------- */
.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-sm);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.glass:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.grid{display:grid;gap:var(--gap);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.metric{padding:24px 22px;border-radius:var(--radius);}
.metric .num{
  font-size:32px;
  font-weight:800;
  background:linear-gradient(135deg,#fff,var(--cyan));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  line-height:1.2;
}
.metric .label{color:#fff;font-weight:600;margin-top:6px;font-size:15px;}
.metric .desc{color:var(--muted-2);font-size:13.5px;margin-top:8px;line-height:1.7;}

.card-icon{
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(61,123,255,.28),rgba(34,211,238,.18));
  border:1px solid var(--line-strong);
  color:var(--cyan);
  font-size:19px;
  margin-bottom:16px;
}
.card-pad{padding:26px 24px;border-radius:var(--radius);}
.card-pad h3{font-size:17.5px;font-weight:700;color:#fff;margin-bottom:10px;}
.card-pad p{color:var(--muted);font-size:14.5px;line-height:1.75;}

/* ladder */
.ladder{padding:30px 26px;border-radius:var(--radius-lg);position:relative;overflow:hidden;}
.ladder.featured{
  border-color:rgba(61,123,255,.55);
  background:linear-gradient(160deg,rgba(45,88,200,.36),rgba(18,31,58,.86));
  box-shadow:var(--glow);
}
.ladder .ribbon{
  position:absolute;top:16px;right:-34px;
  transform:rotate(38deg);
  background:linear-gradient(135deg,var(--cyan),var(--primary));
  color:#04121f;
  font-size:11.5px;
  font-weight:800;
  padding:5px 42px;
  letter-spacing:1px;
}
.ladder h3{font-size:19px;font-weight:800;color:#fff;}
.ladder .price{display:flex;align-items:baseline;gap:8px;margin:16px 0 6px;}
.ladder .price b{font-size:38px;font-weight:800;color:#fff;line-height:1;}
.ladder .price i{font-style:normal;font-size:14px;color:var(--muted);}
.ladder .note{color:var(--muted-2);font-size:13px;margin-bottom:18px;}
.tick-list li{
  display:flex;gap:10px;
  align-items:flex-start;
  color:#c2d2ef;
  font-size:14px;
  padding:7px 0;
}
.tick-list li i{color:var(--cyan);margin-top:5px;font-size:12px;}
.tick-list li.off{color:var(--muted-2);}
.tick-list li.off i{color:#4b5a7a;}

/* compare table */
.compare-wrap{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(14px);
}
table.compare{width:100%;border-collapse:collapse;}
table.compare th,table.compare td{
  padding:16px 18px;
  font-size:14.5px;
  border-bottom:1px solid rgba(122,163,255,.1);
  vertical-align:middle;
}
table.compare thead th{
  background:rgba(61,123,255,.14);
  color:#fff;
  font-weight:700;
  font-size:14.5px;
  text-align:center;
}
table.compare thead th:first-child{text-align:left;}
table.compare tbody td{color:var(--muted);}
table.compare tbody td:first-child{color:#d6e2fb;font-weight:600;}
table.compare tbody td:not(:first-child){text-align:center;}
table.compare tbody tr:hover{background:rgba(61,123,255,.07);}
table.compare tbody tr:last-child td{border-bottom:none;}
.yes{color:var(--cyan);font-weight:700;}
.no{color:#5a6a8c;}
.col-hi{background:rgba(61,123,255,.09);}

/* countdown banner */
.countdown-band{
  border-radius:var(--radius-lg);
  padding:34px 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
  background:
    radial-gradient(560px 220px at 8% 0%,rgba(34,211,238,.28),transparent 66%),
    linear-gradient(135deg,rgba(61,123,255,.28),rgba(124,92,255,.22)),
    rgba(12,22,44,.9);
  border:1px solid var(--line-strong);
  box-shadow:var(--glow);
}
.countdown-band h2{font-size:clamp(19px,2.3vw,26px);font-weight:800;color:#fff;margin-bottom:10px;}
.countdown-band p{color:#b4c6e8;font-size:14.5px;max-width:600px;}
.clock{display:flex;gap:12px;}
.clock .unit{
  min-width:74px;
  padding:12px 10px;
  text-align:center;
  border-radius:14px;
  background:rgba(5,12,26,.72);
  border:1px solid var(--line-strong);
}
.clock .unit b{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.1;}
.clock .unit span{font-size:12px;color:var(--muted);}

/* hot list */
.hot-list{display:grid;gap:16px;}
.hot-item{
  display:flex;
  align-items:center;
  gap:20px;
  padding:20px 24px;
  border-radius:var(--radius);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:all .24s ease;
  flex-wrap:wrap;
}
.hot-item:hover{border-color:rgba(34,211,238,.45);transform:translateX(5px);background:rgba(24,42,78,.7);}
.hot-no{
  width:42px;height:42px;
  flex-shrink:0;
  border-radius:12px;
  display:grid;place-items:center;
  font-weight:800;
  font-size:16px;
  color:#04121f;
  background:linear-gradient(135deg,var(--cyan),var(--primary));
}
.hot-body{flex:1;min-width:220px;}
.hot-body h3{font-size:16.5px;font-weight:700;color:#fff;margin-bottom:6px;}
.hot-body p{color:var(--muted);font-size:14px;}
.hot-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.hot-meta .heat{color:var(--gold);font-size:13px;}

/* versus */
.versus{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);}
.vs-col{padding:28px 26px;border-radius:var(--radius-lg);}
.vs-col.old{background:rgba(13,22,42,.6);border:1px solid rgba(122,163,255,.12);}
.vs-col.new{background:linear-gradient(160deg,rgba(45,88,200,.3),rgba(15,28,54,.85));border:1px solid rgba(61,123,255,.45);box-shadow:var(--glow);}
.vs-col h3{font-size:18px;font-weight:800;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.vs-col ul li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);padding:8px 0;align-items:flex-start;}
.vs-col.new ul li{color:#c8d8f6;}
.vs-col ul li i{margin-top:5px;font-size:12.5px;}

/* timeline */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--cyan),rgba(61,123,255,.15));
}
.tl-item{position:relative;padding:0 0 30px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:2px solid var(--cyan);
  box-shadow:0 0 0 4px rgba(34,211,238,.16);
}
.tl-item h3{font-size:16.5px;font-weight:700;color:#fff;margin-bottom:8px;}
.tl-item span{display:inline-block;font-size:12.5px;color:var(--cyan);letter-spacing:1px;margin-bottom:6px;}
.tl-item p{color:var(--muted);font-size:14.5px;}

/* reviews */
.review{padding:24px 22px;border-radius:var(--radius);display:flex;flex-direction:column;gap:14px;}
.review .stars{color:var(--gold);font-size:13px;letter-spacing:2px;}
.review p{color:#c2d2ef;font-size:14.5px;flex:1;}
.review .who{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:14px;}
.review .ava{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(61,123,255,.4),rgba(34,211,238,.35));
  color:#fff;font-weight:700;font-size:14px;
}
.review .who b{display:block;font-size:14px;color:#fff;font-weight:600;}
.review .who span{font-size:12.5px;color:var(--muted-2);}

/* trust bar */
.trust-bar{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.trust-item{
  background:rgba(10,19,38,.92);
  padding:24px 16px;
  text-align:center;
  transition:background .24s ease;
}
.trust-item:hover{background:rgba(24,44,84,.95);}
.trust-item i{font-size:22px;color:var(--cyan);margin-bottom:10px;display:block;}
.trust-item b{display:block;color:#fff;font-size:14.5px;font-weight:600;margin-bottom:5px;}
.trust-item span{color:var(--muted-2);font-size:12.5px;line-height:1.6;}

/* news */
.news-item{
  display:flex;
  gap:18px;
  padding:22px 24px;
  border-radius:var(--radius);
  background:var(--panel);
  border:1px solid var(--line);
  transition:all .24s ease;
  align-items:flex-start;
}
.news-item:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow);}
.news-date{
  flex-shrink:0;
  width:62px;
  text-align:center;
  border-right:1px solid var(--line);
  padding-right:14px;
}
.news-date b{display:block;font-size:20px;color:#fff;font-weight:800;line-height:1.2;}
.news-date span{font-size:12px;color:var(--muted-2);}
.news-body h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:7px;}
.news-body p{color:var(--muted);font-size:14px;}

/* quick answers */
.qa-item{padding:22px 24px;border-radius:var(--radius);}
.qa-item h3{font-size:15.5px;font-weight:700;color:#fff;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.qa-item h3 i{color:var(--cyan);margin-top:4px;font-size:14px;}
.qa-item p{color:var(--muted);font-size:14px;}

/* faq accordion */
.faq .accordion-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius)!important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(12px);
}
.faq .accordion-button{
  background:transparent;
  color:#e9eeff;
  font-size:15.5px;
  font-weight:600;
  padding:20px 24px;
  box-shadow:none!important;
}
.faq .accordion-button:not(.collapsed){color:var(--cyan);background:rgba(61,123,255,.1);}
.faq .accordion-button::after{filter:invert(78%) sepia(36%) saturate(1200%) hue-rotate(170deg);}
.faq .accordion-body{color:var(--muted);font-size:14.5px;padding:4px 24px 22px;line-height:1.8;}

/* category wall */
.cat-card{padding:28px 26px;border-radius:var(--radius-lg);display:flex;flex-direction:column;gap:14px;}
.cat-card .cat-top{display:flex;align-items:center;gap:14px;}
.cat-card .cat-ico{
  width:50px;height:50px;border-radius:15px;display:grid;place-items:center;
  font-size:20px;color:#04121f;
  background:linear-gradient(135deg,var(--cyan),var(--primary));
  box-shadow:var(--glow-cyan);
}
.cat-card h3{font-size:18px;font-weight:800;color:#fff;}
.cat-card p{color:var(--muted);font-size:14.5px;flex:1;}
.cat-card .cat-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.cat-card .cat-foot span{font-size:12.5px;color:var(--muted-2);}

/* join form */
.join-box{
  border-radius:var(--radius-lg);
  padding:38px 34px;
  background:
    radial-gradient(600px 240px at 88% 0%,rgba(124,92,255,.3),transparent 66%),
    linear-gradient(150deg,rgba(20,38,74,.95),rgba(9,17,34,.95));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:38px;
  align-items:center;
}
.join-box h2{font-size:clamp(20px,2.5vw,28px);font-weight:800;color:#fff;margin-bottom:14px;line-height:1.4;}
.join-box p{color:#b2c5e7;font-size:15px;}
.join-points{margin-top:20px;display:grid;gap:10px;}
.join-points li{display:flex;gap:10px;color:#cbd9f6;font-size:14.5px;align-items:flex-start;}
.join-points li i{color:var(--cyan);margin-top:5px;font-size:12.5px;}
.form-panel{
  background:rgba(5,12,26,.62);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
}
.form-panel label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;}
.form-panel .field{margin-bottom:16px;}
.form-panel input,.form-panel select{
  width:100%;
  padding:12px 15px;
  border-radius:12px;
  background:rgba(10,20,40,.9);
  border:1px solid var(--line-strong);
  color:#e9eeff;
  font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-panel input::placeholder{color:#5f7196;}
.form-panel input:focus,.form-panel select:focus{
  outline:none;
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.form-tip{font-size:12.5px;color:var(--muted-2);margin-top:12px;text-align:center;}

/* footer */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,12,24,.4),rgba(3,6,15,.98));
  padding:54px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:34px;
  border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px;}
.footer-brand b{font-size:17px;color:#fff;font-weight:700;}
.footer-about{color:var(--muted-2);font-size:13.8px;line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14.5px;color:#fff;font-weight:700;margin-bottom:14px;}
.footer-col a,.footer-col span{display:block;color:var(--muted-2);font-size:13.8px;padding:5px 0;transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  color:var(--muted-2);
  font-size:13px;
}
.footer-bottom .tech{color:#4d5d7d;font-size:12.5px;}

/* responsive */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .trust-bar{grid-template-columns:repeat(3,1fr);}
  .join-box{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .main-nav a{padding:9px 11px;font-size:14px;}
}
@media (max-width:768px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-right .btn-glow{display:none;}
  .section{padding:46px 0;}
  .hero-cover{height:190px;}
  .cover-inner{padding:18px 20px;}
  .hero-body{padding:0 18px;margin-top:-44px;gap:16px;}
  .hero-avatar{width:84px;height:84px;font-size:32px;border-radius:22px;}
  .versus{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .countdown-band{padding:26px 22px;}
  .join-box{padding:28px 22px;}
  table.compare th,table.compare td{padding:12px 10px;font-size:13px;}
}
@media (max-width:520px){
  .grid-4{grid-template-columns:1fr;}
  .trust-bar{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-stats{gap:8px;}
  .stat-chip{padding:7px 11px;}
  .clock .unit{min-width:60px;}
  .clock .unit b{font-size:21px;}
  .hot-item{padding:18px;}
  .brand-text{font-size:16px;}
  .hero-id h1{font-size:22px;}
}

/* roulang page: category3 */
/* ================= 设计变量 ================= */
:root{
 --bg:#050a16;
 --bg-soft:#081226;
 --bg-deep:#03060f;
 --panel:rgba(18,31,58,.66);
 --panel-strong:rgba(22,38,70,.9);
 --line:rgba(122,163,255,.16);
 --line-strong:rgba(122,163,255,.32);
 --text:#e9eeff;
 --muted:#93a5c8;
 --muted-2:#6f81a6;
 --primary:#3d7bff;
 --primary-deep:#2a5cf0;
 --cyan:#22d3ee;
 --violet:#7c5cff;
 --gold:#ffcf6b;
 --radius-sm:10px;
 --radius:16px;
 --radius-lg:24px;
 --radius-pill:999px;
 --shadow-sm:0 6px 18px rgba(3,8,20,.45);
 --shadow:0 18px 48px rgba(3,8,20,.6);
 --glow:0 0 0 1px rgba(61,123,255,.4),0 14px 42px rgba(45,110,255,.38);
 --glow-cyan:0 0 0 1px rgba(34,211,238,.4),0 12px 38px rgba(34,211,238,.28);
 --gap:28px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 background:
 radial-gradient(1100px 620px at 12% -8%,rgba(61,123,255,.22),transparent 62%),
 radial-gradient(900px 560px at 92% 4%,rgba(124,92,255,.18),transparent 60%),
 linear-gradient(180deg,#050a16 0%,#040814 55%,#03060f 100%);
 color:var(--text);
 line-height:1.75;
 font-size:16px;
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cyan);}
button,input,select,textarea{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.container{
 width:100%;
 max-width:1200px;
 margin:0 auto;
 padding:0 20px;
}
/* ================= 按钮 ================= */
.btn{
 display:inline-flex;
 align-items:center;
 justify-content:center;
 gap:8px;
 padding:13px 26px;
 border-radius:var(--radius-pill);
 font-size:15px;
 font-weight:600;
 letter-spacing:.3px;
 border:1px solid transparent;
 cursor:pointer;
 transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
 white-space:nowrap;
}
.btn-glow{
 background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
 color:#fff;
 box-shadow:var(--glow);
}
.btn-glow:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(34,211,238,.55),0 18px 50px rgba(61,123,255,.5);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
 background:rgba(122,163,255,.08);
 border-color:var(--line-strong);
 color:var(--text);
}
.btn-ghost:hover{background:rgba(61,123,255,.18);border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);}
.btn-cyan{
 background:linear-gradient(135deg,var(--cyan),#3d7bff);
 color:#04121f;
 font-weight:700;
 box-shadow:var(--glow-cyan);
}
.btn-cyan:hover{transform:translateY(-2px);color:#04121f;}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}
/* ================= 徽章 / 标签 ================= */
.badge-soft{
 display:inline-flex;
 align-items:center;
 gap:7px;
 padding:6px 14px;
 border-radius:var(--radius-pill);
 background:rgba(34,211,238,.12);
 border:1px solid rgba(34,211,238,.3);
 color:#8ceaf8;
 font-size:12.5px;
 letter-spacing:.6px;
}
.tag{
 display:inline-block;
 padding:5px 12px;
 border-radius:var(--radius-pill);
 background:rgba(122,163,255,.1);
 border:1px solid var(--line);
 color:var(--muted);
 font-size:12.5px;
 transition:all .2s ease;
}
.tag:hover{background:rgba(61,123,255,.22);color:#cfe0ff;border-color:var(--line-strong);}
/* ================= 头部导航 ================= */
.site-header{
 position:sticky;
 top:0;
 z-index:1000;
 backdrop-filter:blur(18px);
 background:rgba(5,10,22,.78);
 border-bottom:1px solid var(--line);
}
.nav-wrap{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:20px;
 min-height:70px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
 width:38px;height:38px;
 display:grid;place-items:center;
 border-radius:12px;
 background:linear-gradient(135deg,var(--primary),var(--cyan));
 color:#04101f;
 font-weight:800;
 font-size:17px;
 box-shadow:var(--glow-cyan);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:#fff;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
 position:relative;
 padding:9px 15px;
 border-radius:var(--radius-pill);
 font-size:15px;
 color:var(--muted);
 transition:all .2s ease;
}
.main-nav a:hover{color:#fff;background:rgba(61,123,255,.14);}
.main-nav a.active{
 color:#fff;
 background:rgba(61,123,255,.2);
 box-shadow:inset 0 0 0 1px rgba(61,123,255,.45);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.lang-switch{
 display:flex;
 align-items:center;
 gap:2px;
 padding:3px;
 border-radius:var(--radius-pill);
 background:rgba(122,163,255,.09);
 border:1px solid var(--line);
}
.lang-btn{
 border:none;
 background:transparent;
 color:var(--muted);
 font-size:12.5px;
 padding:5px 13px;
 border-radius:var(--radius-pill);
 cursor:pointer;
 transition:all .2s ease;
}
.lang-btn.active{background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;box-shadow:0 4px 14px rgba(61,123,255,.45);}
.lang-btn:hover{color:#fff;}
.nav-toggle{
 display:none;
 width:42px;height:42px;
 border-radius:12px;
 background:rgba(122,163,255,.1);
 border:1px solid var(--line);
 color:var(--text);
 cursor:pointer;
}
.nav-toggle:hover{background:rgba(61,123,255,.2);}
.mobile-drawer{
 display:none;
 border-top:1px solid var(--line);
 background:rgba(6,12,26,.97);
 padding:16px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
 display:block;
 padding:12px 14px;
 border-radius:12px;
 color:var(--muted);
 font-size:15.5px;
 margin-bottom:6px;
}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(61,123,255,.16);color:#fff;}
/* ================= 内页首屏 ================= */
.page-hero{padding:48px 0 10px;}
.hero-grid{
 display:grid;
 grid-template-columns:1.35fr .95fr;
 gap:32px;
 align-items:start;
}
.hero-copy h1{
 font-size:clamp(27px,3.4vw,40px);
 letter-spacing:.4px;
 margin:18px 0 16px;
 background:linear-gradient(120deg,#ffffff 0%,#c8dcff 55%,#8ceaf8 100%);
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.hero-lead{
 color:var(--muted);
 font-size:16.5px;
 max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 24px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-points li{
 display:inline-flex;
 align-items:center;
 gap:8px;
 font-size:13.5px;
 color:var(--muted);
 background:rgba(122,163,255,.08);
 border:1px solid var(--line);
 border-radius:var(--radius-pill);
 padding:7px 14px;
}
.hero-points i{color:var(--cyan);}
.hero-panel{
 background:linear-gradient(165deg,rgba(24,42,78,.88),rgba(9,17,35,.86));
 border:1px solid var(--line-strong);
 border-radius:var(--radius-lg);
 padding:26px;
 box-shadow:var(--shadow);
 backdrop-filter:blur(16px);
}
.hero-panel .panel-head{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:12px;
 font-size:14px;
 color:var(--muted);
 letter-spacing:.5px;
 padding-bottom:16px;
 border-bottom:1px solid var(--line);
}
.panel-score{
 font-size:34px;
 font-weight:800;
 color:#fff;
 margin:18px 0 4px;
 letter-spacing:.5px;
}
.panel-score span{font-size:14px;color:var(--muted);font-weight:500;margin-left:6px;}
.panel-bars{display:grid;gap:14px;margin-top:18px;}
.panel-bar-row{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--muted);}
.panel-bar-row .label{flex:0 0 108px;}
.bar-track{flex:1;height:7px;border-radius:var(--radius-pill);background:rgba(122,163,255,.14);overflow:hidden;}
.bar-fill{height:100%;border-radius:var(--radius-pill);background:linear-gradient(90deg,var(--primary),var(--cyan));}
.panel-foot{
 margin-top:22px;
 padding-top:16px;
 border-top:1px solid var(--line);
 font-size:13px;
 color:var(--muted-2);
 display:flex;
 align-items:center;
 gap:8px;
}
/* ================= 板块 ================= */
.section{padding:60px 0;}
.section-alt{padding:60px 0;background:linear-gradient(180deg,rgba(8,18,38,.55),rgba(4,8,20,.1));}
.section-head{margin-bottom:34px;max-width:760px;}
.section-head h2{
 font-size:clamp(21px,2.5vw,29px);
 letter-spacing:.3px;
 margin:14px 0 12px;
}
.section-head p{color:var(--muted);font-size:15.5px;}
.head-row{
 display:flex;
 align-items:flex-end;
 justify-content:space-between;
 gap:24px;
 flex-wrap:wrap;
 margin-bottom:34px;
}
.head-row .section-head{margin-bottom:0;}
.text-link{color:var(--cyan);font-size:14.5px;display:inline-flex;align-items:center;gap:7px;}
.text-link:hover{color:#fff;}
/* ================= 玻璃卡片 ================= */
.glass{
 background:var(--panel);
 border:1px solid var(--line);
 border-radius:var(--radius-lg);
 backdrop-filter:blur(14px);
 box-shadow:var(--shadow-sm);
 padding:26px;
 transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.glass:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.card-icon{
 width:46px;height:46px;
 display:grid;place-items:center;
 border-radius:14px;
 background:linear-gradient(135deg,rgba(61,123,255,.35),rgba(34,211,238,.24));
 border:1px solid var(--line-strong);
 color:var(--cyan);
 font-size:18px;
 margin-bottom:16px;
}
.card-title{font-size:17px;margin-bottom:10px;color:#fff;}
.card-text{color:var(--muted);font-size:14.5px;}
.card-meta{
 display:flex;
 align-items:center;
 gap:10px;
 margin-top:18px;
 padding-top:14px;
 border-top:1px dashed var(--line);
 font-size:13px;
 color:var(--muted-2);
}
/* ================= 指标看板 ================= */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(178px,1fr));gap:18px;}
.stat-card{
 padding:22px;
 border-radius:var(--radius);
 background:linear-gradient(160deg,rgba(23,40,74,.86),rgba(11,20,40,.72));
 border:1px solid var(--line);
 transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-sm);}
.stat-card .num{
 font-size:29px;
 font-weight:800;
 letter-spacing:.5px;
 background:linear-gradient(135deg,#fff,var(--cyan));
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.stat-card .num em{font-size:15px;font-style:normal;font-weight:600;margin-left:2px;}
.stat-card .label{font-size:13.5px;color:var(--muted);margin-top:6px;}
.stat-card .hint{font-size:12.5px;color:var(--muted-2);margin-top:10px;}
/* ================= 能力矩阵 ================= */
.matrix{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:20px;}
/* ================= 结果对比 ================= */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
 border-radius:var(--radius-lg);
 padding:28px;
 border:1px solid var(--line);
 background:var(--panel);
}
.compare-before{background:linear-gradient(165deg,rgba(38,22,32,.62),rgba(12,14,28,.7));}
.compare-after{
 background:linear-gradient(165deg,rgba(17,42,72,.85),rgba(8,18,38,.8));
 border-color:var(--line-strong);
 box-shadow:var(--shadow);
}
.compare-col h3{font-size:17px;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
.compare-col h3 i{font-size:15px;}
.compare-before h3 i{color:#ff8a9a;}
.compare-after h3 i{color:var(--cyan);}
.compare-list li{
 display:flex;
 gap:12px;
 align-items:flex-start;
 padding:11px 0;
 font-size:14.5px;
 color:var(--muted);
 border-bottom:1px dashed rgba(122,163,255,.12);
}
.compare-list li:last-child{border-bottom:none;}
.compare-before .compare-list i{color:#ff8a9a;margin-top:5px;font-size:12px;}
.compare-after .compare-list i{color:var(--cyan);margin-top:5px;font-size:12px;}
/* ================= 里程碑时间线 ================= */
.timeline{position:relative;padding-left:26px;}
.timeline::before{
 content:"";
 position:absolute;
 left:6px;top:8px;bottom:8px;
 width:1px;
 background:linear-gradient(180deg,rgba(34,211,238,.6),rgba(61,123,255,.15));
}
.timeline li{position:relative;padding:0 0 28px 20px;}
.timeline li:last-child{padding-bottom:0;}
.tl-dot{
 position:absolute;
 left:-26px;top:7px;
 width:13px;height:13px;
 border-radius:50%;
 background:var(--bg);
 border:2px solid var(--cyan);
 box-shadow:0 0 0 4px rgba(34,211,238,.12);
}
.tl-stage{font-size:12.5px;color:var(--cyan);letter-spacing:1px;}
.tl-title{font-size:16px;color:#fff;margin:6px 0 8px;}
.tl-text{font-size:14.5px;color:var(--muted);}
/* ================= 资讯列表 ================= */
.news-list{display:grid;gap:16px;}
.news-item{
 display:grid;
 grid-template-columns:104px 1fr auto;
 gap:22px;
 align-items:center;
 padding:22px 24px;
 border-radius:var(--radius);
 background:var(--panel);
 border:1px solid var(--line);
 transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.news-item:hover{transform:translateX(4px);border-color:var(--line-strong);box-shadow:var(--shadow-sm);}
.news-date{
 font-size:13px;
 color:var(--muted-2);
 border-right:1px solid var(--line);
 padding-right:16px;
}
.news-body h3{font-size:16.5px;color:#fff;margin-bottom:8px;}
.news-body p{font-size:14px;color:var(--muted);}
.news-more{font-size:13.5px;color:var(--cyan);white-space:nowrap;}
/* ================= 平台保障 ================= */
.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;}
.trust-card{
 border-radius:var(--radius);
 padding:24px;
 background:linear-gradient(160deg,rgba(21,37,70,.8),rgba(9,17,35,.72));
 border:1px solid var(--line);
}
.trust-card h3{font-size:16px;color:#fff;margin:14px 0 9px;}
.trust-card p{font-size:14px;color:var(--muted);}
.trust-card i.tico{color:var(--cyan);font-size:19px;}
/* ================= 快速解答 ================= */
.quick-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;}
.quick-item{
 padding:22px 24px;
 border-radius:var(--radius);
 background:rgba(18,31,58,.5);
 border-left:3px solid rgba(34,211,238,.7);
 border-top:1px solid var(--line);
 border-right:1px solid var(--line);
 border-bottom:1px solid var(--line);
}
.quick-item b{display:block;font-size:15.5px;color:#fff;margin-bottom:9px;}
.quick-item p{font-size:14px;color:var(--muted);}
/* ================= FAQ ================= */
.faq-accordion .accordion-item{
 background:var(--panel);
 border:1px solid var(--line);
 border-radius:var(--radius);
 margin-bottom:14px;
 overflow:hidden;
}
.faq-accordion .accordion-button{
 background:transparent;
 color:var(--text);
 font-size:15.5px;
 font-weight:600;
 padding:19px 22px;
 box-shadow:none;
 border:none;
}
.faq-accordion .accordion-button:not(.collapsed){
 background:rgba(61,123,255,.14);
 color:#fff;
}
.faq-accordion .accordion-button:focus{box-shadow:none;border:none;outline:2px solid rgba(34,211,238,.55);outline-offset:-2px;}
.faq-accordion .accordion-button::after{
 content:"\f078";
 font-family:"Font Awesome 6 Free";
 font-weight:900;
 font-size:13px;
 background-image:none;
 color:var(--cyan);
 transform:none;
 transition:transform .25s ease;
 width:auto;height:auto;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(180deg);}
.faq-accordion .accordion-body{
 padding:0 22px 22px;
 color:var(--muted);
 font-size:14.5px;
}
/* ================= 转化表单 ================= */
.join-panel{
 border-radius:var(--radius-lg);
 border:1px solid var(--line-strong);
 background:
 radial-gradient(520px 260px at 8% 0%,rgba(61,123,255,.28),transparent 62%),
 linear-gradient(160deg,rgba(20,36,70,.9),rgba(8,15,32,.9));
 box-shadow:var(--shadow);
 padding:38px;
 display:grid;
 grid-template-columns:1fr 1.05fr;
 gap:38px;
}
.join-copy h2{font-size:clamp(21px,2.4vw,28px);margin:16px 0 14px;}
.join-copy p{color:var(--muted);font-size:15px;}
.join-notes{margin-top:22px;display:grid;gap:12px;}
.join-notes li{display:flex;gap:11px;font-size:14px;color:var(--muted);align-items:flex-start;}
.join-notes i{color:var(--cyan);margin-top:5px;font-size:12px;}
.privacy-form{display:grid;gap:16px;}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;}
.field input,.field select,.field textarea{
 width:100%;
 padding:12px 15px;
 border-radius:var(--radius-sm);
 background:rgba(6,12,26,.72);
 border:1px solid var(--line);
 color:var(--text);
 font-size:14.5px;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2);}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 19px) 50%,calc(100% - 13px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;
 border-color:rgba(34,211,238,.65);
 background:rgba(8,17,34,.9);
 box-shadow:0 0 0 3px rgba(34,211,238,.14);
}
.field textarea{min-height:104px;resize:vertical;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{font-size:12.5px;color:var(--muted-2);}
.form-msg{
 font-size:13.5px;
 color:#8ceaf8;
 min-height:20px;
}
/* ================= 页脚 ================= */
.site-footer{
 margin-top:76px;
 border-top:1px solid var(--line);
 background:linear-gradient(180deg,rgba(6,12,26,.6),rgba(3,6,15,.96));
 padding:56px 0 26px;
}
.footer-grid{
 display:grid;
 grid-template-columns:1.7fr 1fr 1fr 1fr;
 gap:34px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand b{font-size:17px;color:#fff;letter-spacing:.4px;}
.footer-about{color:var(--muted);font-size:14.5px;max-width:330px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:1.2px;margin-bottom:15px;font-weight:600;}
.footer-col a{
 display:block;
 color:var(--muted);
 font-size:14.5px;
 padding:5px 0;
 transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--cyan);transform:translateX(3px);}
.footer-bottom{
 margin-top:42px;
 padding-top:20px;
 border-top:1px solid var(--line);
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:16px;
 flex-wrap:wrap;
 color:var(--muted-2);
 font-size:13px;
}
.footer-bottom .tech{letter-spacing:.6px;}
/* ================= 响应式 ================= */
@media (max-width:1080px){
 .hero-grid{grid-template-columns:1fr;}
 .join-panel{grid-template-columns:1fr;padding:30px;}
 .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:900px){
 .main-nav{display:none;}
 .nav-toggle{display:grid;place-items:center;}
 .compare-grid{grid-template-columns:1fr;}
 .news-item{grid-template-columns:1fr;gap:12px;}
 .news-date{border-right:none;border-left:2px solid rgba(34,211,238,.5);padding:0 0 0 12px;}
 .news-more{justify-self:flex-start;}
}
@media (max-width:768px){
 .section,.section-alt{padding:46px 0;}
 .page-hero{padding:34px 0 6px;}
 .footer-grid{grid-template-columns:1fr 1fr;}
 .hero-actions{flex-direction:column;align-items:stretch;}
 .hero-actions .btn{width:100%;}
}
@media (max-width:560px){
 .container{padding:0 16px;}
 .glass,.hero-panel,.compare-col,.trust-card{padding:20px;}
 .join-panel{padding:22px;}
 .field-row{grid-template-columns:1fr;}
 .stat-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;}
 .stat-card{padding:16px;}
 .stat-card .num{font-size:24px;}
 .footer-grid{grid-template-columns:1fr;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
 .lang-switch .lang-btn{padding:5px 9px;font-size:12px;}
}

/* roulang page: category1 */
:root{
 --bg:#050a16;
 --bg-soft:#081226;
 --bg-deep:#03060f;
 --panel:rgba(18,31,58,.66);
 --panel-strong:rgba(22,38,70,.9);
 --line:rgba(122,163,255,.16);
 --line-strong:rgba(122,163,255,.32);
 --text:#e9eeff;
 --muted:#93a5c8;
 --muted-2:#6f81a6;
 --primary:#3d7bff;
 --primary-deep:#2a5cf0;
 --cyan:#22d3ee;
 --violet:#7c5cff;
 --gold:#ffcf6b;
 --radius-sm:10px;
 --radius:16px;
 --radius-lg:24px;
 --radius-pill:999px;
 --shadow-sm:0 6px 18px rgba(3,8,20,.45);
 --shadow:0 18px 48px rgba(3,8,20,.6);
 --glow:0 0 0 1px rgba(61,123,255,.4),0 14px 42px rgba(45,110,255,.38);
 --glow-cyan:0 0 0 1px rgba(34,211,238,.4),0 12px 38px rgba(34,211,238,.28);
 --gap:28px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 background:
 radial-gradient(1100px 620px at 12% -8%,rgba(61,123,255,.22),transparent 62%),
 radial-gradient(900px 560px at 92% 4%,rgba(124,92,255,.18),transparent 60%),
 linear-gradient(180deg,#050a16 0%,#040814 55%,#03060f 100%);
 color:var(--text);
 line-height:1.75;
 font-size:16px;
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cyan);}
button,input,select,textarea{font-family:inherit;}
.container{
 width:100%;
 max-width:1200px;
 margin:0 auto;
 padding:0 20px;
}
section[id]{scroll-margin-top:96px;}
/* ---------- buttons ---------- */
.btn{
 display:inline-flex;
 align-items:center;
 justify-content:center;
 gap:8px;
 padding:13px 26px;
 border-radius:var(--radius-pill);
 font-size:15px;
 font-weight:600;
 letter-spacing:.3px;
 border:1px solid transparent;
 cursor:pointer;
 transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
 white-space:nowrap;
}
.btn-glow{
 background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
 color:#fff;
 box-shadow:var(--glow);
}
.btn-glow:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(34,211,238,.55),0 18px 50px rgba(61,123,255,.5);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
 background:rgba(122,163,255,.08);
 border-color:var(--line-strong);
 color:var(--text);
}
.btn-ghost:hover{background:rgba(61,123,255,.18);border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);}
.btn-cyan{
 background:linear-gradient(135deg,var(--cyan),#3d7bff);
 color:#04121f;
 font-weight:700;
 box-shadow:var(--glow-cyan);
}
.btn-cyan:hover{transform:translateY(-2px);color:#04121f;}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}
.btn:focus-visible,.lang-btn:focus-visible,.nav-toggle:focus-visible{
 outline:2px solid var(--cyan);
 outline-offset:3px;
}
/* ---------- badges / tags ---------- */
.badge-soft{
 display:inline-flex;
 align-items:center;
 gap:7px;
 padding:6px 14px;
 border-radius:var(--radius-pill);
 background:rgba(34,211,238,.12);
 border:1px solid rgba(34,211,238,.3);
 color:#8ceaf8;
 font-size:12.5px;
 letter-spacing:.6px;
}
.tag{
 display:inline-block;
 padding:5px 12px;
 border-radius:var(--radius-pill);
 background:rgba(122,163,255,.1);
 border:1px solid var(--line);
 color:var(--muted);
 font-size:12.5px;
 transition:all .2s ease;
}
.tag:hover{background:rgba(61,123,255,.22);color:#cfe0ff;border-color:var(--line-strong);}
/* ---------- header ---------- */
.site-header{
 position:sticky;
 top:0;
 z-index:1000;
 backdrop-filter:blur(18px);
 background:rgba(5,10,22,.78);
 border-bottom:1px solid var(--line);
}
.nav-wrap{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:20px;
 min-height:70px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
 width:38px;height:38px;
 display:grid;place-items:center;
 border-radius:12px;
 background:linear-gradient(135deg,var(--primary),var(--cyan));
 color:#04101f;
 font-weight:800;
 font-size:17px;
 box-shadow:var(--glow-cyan);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:#fff;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
 position:relative;
 padding:9px 15px;
 border-radius:var(--radius-pill);
 font-size:15px;
 color:var(--muted);
 transition:all .2s ease;
}
.main-nav a:hover{color:#fff;background:rgba(61,123,255,.14);}
.main-nav a.active{
 color:#fff;
 background:rgba(61,123,255,.2);
 box-shadow:inset 0 0 0 1px rgba(61,123,255,.45);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.lang-switch{
 display:flex;
 align-items:center;
 gap:2px;
 padding:3px;
 border-radius:var(--radius-pill);
 background:rgba(122,163,255,.08);
 border:1px solid var(--line);
}
.lang-btn{
 border:none;
 background:transparent;
 color:var(--muted);
 font-size:12.5px;
 padding:5px 13px;
 border-radius:var(--radius-pill);
 cursor:pointer;
 transition:all .2s ease;
}
.lang-btn.active{background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;box-shadow:0 4px 14px rgba(61,123,255,.45);}
.lang-btn:hover{color:#fff;}
.nav-toggle{
 display:none;
 width:42px;height:42px;
 border-radius:12px;
 background:rgba(122,163,255,.1);
 border:1px solid var(--line);
 color:var(--text);
 cursor:pointer;
}
.mobile-drawer{
 display:none;
 border-top:1px solid var(--line);
 background:rgba(6,12,26,.97);
 padding:16px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
 display:block;
 padding:12px 14px;
 border-radius:12px;
 color:var(--muted);
 font-size:15.5px;
 margin-bottom:6px;
}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(61,123,255,.16);color:#fff;}
.mobile-lang{display:flex;gap:8px;margin-top:10px;padding-top:14px;border-top:1px solid var(--line);}
/* ---------- page hero (斜切色块) ---------- */
.hero-slash{
 position:relative;
 padding:70px 0 122px;
 background:
 radial-gradient(680px 340px at 14% 6%,rgba(34,211,238,.22),transparent 62%),
 radial-gradient(760px 420px at 88% -4%,rgba(124,92,255,.3),transparent 66%),
 linear-gradient(122deg,#071127 0%,#12224a 50%,#081226 100%);
 clip-path:polygon(0 0,100% 0,100% 76%,0 100%);
 overflow:hidden;
}
.hero-slash::after{
 content:"";
 position:absolute;inset:0;
 background-image:linear-gradient(rgba(140,180,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,180,255,.055) 1px,transparent 1px);
 background-size:56px 56px;
 pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:810px;}
.hero-title{
 font-size:clamp(30px,4.5vw,52px);
 line-height:1.2;
 font-weight:800;
 letter-spacing:-.5px;
 margin:20px 0 18px;
 color:#fff;
}
.hero-title em{
 font-style:normal;
 background:linear-gradient(120deg,var(--cyan),#6ea8ff 55%,var(--violet));
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.hero-sub{
 font-size:16.5px;
 color:#b7c6e6;
 max-width:700px;
 margin:0 0 28px;
 line-height:1.9;
}
.hero-meta{
 display:flex;
 flex-wrap:wrap;
 gap:10px;
 margin-top:26px;
}
.hero-meta span{
 display:inline-flex;
 align-items:center;
 gap:7px;
 padding:7px 14px;
 border-radius:var(--radius-pill);
 background:rgba(9,18,36,.55);
 border:1px solid var(--line);
 color:var(--muted);
 font-size:13px;
 backdrop-filter:blur(10px);
}
.hero-meta i{color:var(--cyan);}
/* ---------- metrics ---------- */
.metrics{padding:0 0 8px;}
.metric-grid{
 display:grid;
 grid-template-columns:repeat(4,1fr);
 gap:18px;
 margin-top:-78px;
 position:relative;
 z-index:5;
}
.card-glass{
 background:var(--panel);
 backdrop-filter:blur(16px);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-sm);
 transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card-glass:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.metric-card{padding:24px 22px;}
.metric-num{
 font-size:30px;
 font-weight:800;
 line-height:1.2;
 letter-spacing:-.5px;
 background:linear-gradient(120deg,#ffffff,#7dd8ff 70%);
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.metric-num small{font-size:14px;font-weight:600;margin-left:3px;}
.metric-label{color:var(--muted);font-size:13.5px;margin-top:8px;}
/* ---------- section base ---------- */
.section{padding:70px 0;position:relative;}
.section-head{
 display:flex;
 align-items:flex-end;
 justify-content:space-between;
 gap:30px;
 flex-wrap:wrap;
 margin-bottom:36px;
}
.section-head .text{max-width:660px;}
.eyebrow{
 display:inline-flex;
 align-items:center;
 gap:9px;
 font-size:12px;
 letter-spacing:2px;
 color:var(--cyan);
 margin-bottom:14px;
 text-transform:uppercase;
}
.eyebrow::before{
 content:"";
 width:22px;height:1px;
 background:linear-gradient(90deg,var(--cyan),transparent);
}
.section-title{
 font-size:clamp(22px,2.7vw,32px);
 font-weight:800;
 letter-spacing:-.4px;
 color:#fff;
 margin:0 0 12px;
 line-height:1.35;
}
.section-desc{color:var(--muted);font-size:15.5px;margin:0;line-height:1.9;}
/* ---------- matrix ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.matrix-card{padding:28px 26px;}
.matrix-icon{
 width:48px;height:48px;
 display:grid;place-items:center;
 border-radius:14px;
 background:linear-gradient(135deg,rgba(61,123,255,.26),rgba(34,211,238,.12));
 border:1px solid var(--line-strong);
 color:var(--cyan);
 font-size:19px;
 margin-bottom:18px;
 box-shadow:inset 0 0 22px rgba(61,123,255,.18);
}
.matrix-title{font-size:17px;font-weight:700;color:#fff;margin:0 0 10px;}
.matrix-text{color:var(--muted);font-size:14.5px;line-height:1.85;margin:0;}
.matrix-foot{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;}
/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
 padding:30px 28px;
 border-radius:var(--radius-lg);
 border:1px solid var(--line);
 background:rgba(11,21,42,.62);
 backdrop-filter:blur(14px);
}
.compare-col.is-win{
 background:linear-gradient(160deg,rgba(61,123,255,.2),rgba(124,92,255,.14));
 border-color:var(--line-strong);
 box-shadow:var(--glow);
}
.compare-head{
 display:flex;align-items:center;gap:10px;
 font-size:17px;font-weight:700;color:#fff;
 padding-bottom:16px;margin-bottom:8px;
 border-bottom:1px solid var(--line);
}
.compare-head i{color:var(--cyan);}
.compare-col.is-win .compare-head i{color:var(--gold);}
.compare-list{list-style:none;margin:0;padding:0;}
.compare-list li{
 display:flex;gap:11px;
 padding:14px 0;
 border-bottom:1px dashed rgba(122,163,255,.14);
 color:var(--muted);
 font-size:14.5px;
 line-height:1.8;
}
.compare-list li:last-child{border-bottom:none;}
.compare-list i{margin-top:5px;font-size:13px;color:var(--muted-2);}
.compare-col.is-win .compare-list li{color:#cfdcf5;}
.compare-col.is-win .compare-list i{color:var(--cyan);}
/* ---------- timeline ---------- */
.timeline{
 display:grid;
 grid-template-columns:repeat(4,1fr);
 gap:22px;
 position:relative;
 padding-top:8px;
}
.timeline::before{
 content:"";
 position:absolute;
 top:15px;left:0;right:0;height:1px;
 background:linear-gradient(90deg,transparent,var(--line-strong) 12%,var(--line-strong) 88%,transparent);
}
.timeline-item{position:relative;padding-top:42px;}
.timeline-dot{
 position:absolute;top:7px;left:0;
 width:16px;height:16px;
 border-radius:50%;
 background:linear-gradient(135deg,var(--cyan),var(--primary));
 box-shadow:0 0 0 5px rgba(61,123,255,.16),0 0 20px rgba(61,123,255,.7);
}
.timeline-time{font-size:13px;color:var(--cyan);letter-spacing:.6px;margin-bottom:8px;}
.timeline-title{font-size:16px;font-weight:700;color:#fff;margin:0 0 8px;}
.timeline-text{color:var(--muted);font-size:14.5px;margin:0;line-height:1.85;}
/* ---------- news ---------- */
.news-list{display:grid;gap:12px;}
.news-item{
 display:flex;
 align-items:center;
 gap:20px;
 padding:19px 24px;
 border-radius:var(--radius);
 border:1px solid var(--line);
 background:rgba(11,21,42,.6);
 backdrop-filter:blur(12px);
 transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.news-item:hover{
 transform:translateX(5px);
 border-color:var(--line-strong);
 background:rgba(18,32,60,.82);
}
.news-date{color:var(--muted-2);font-size:13px;min-width:96px;letter-spacing:.4px;}
.news-title{flex:1;color:var(--text);font-size:15.5px;font-weight:600;line-height:1.7;}
.news-item .tag{flex-shrink:0;}
/* ---------- trust ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.trust-card{padding:26px 24px;position:relative;overflow:hidden;}
.trust-card::before{
 content:"";
 position:absolute;top:0;left:0;right:0;height:2px;
 background:linear-gradient(90deg,var(--cyan),transparent);
 opacity:.7;
}
.trust-card h3{
 font-size:16px;font-weight:700;color:#fff;margin:14px 0 10px;
 display:flex;align-items:center;gap:9px;
}
.trust-card h3 i{color:var(--cyan);font-size:15px;}
.trust-card p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.85;}
/* ---------- quick answers ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.qa-card{padding:24px 26px;}
.qa-q{
 font-size:15.5px;font-weight:700;color:#fff;
 display:flex;gap:10px;align-items:flex-start;
 margin-bottom:10px;
}
.qa-q i{color:var(--gold);margin-top:5px;font-size:13px;}
.qa-a{color:var(--muted);font-size:14.5px;margin:0;line-height:1.85;}
/* ---------- faq accordion ---------- */
.faq-wrap{max-width:920px;}
.faq .accordion-item{
 background:var(--panel);
 border:1px solid var(--line);
 border-radius:var(--radius) !important;
 margin-bottom:12px;
 overflow:hidden;
 backdrop-filter:blur(14px);
}
.faq .accordion-button{
 background:transparent;
 color:var(--text);
 font-size:16px;
 font-weight:600;
 padding:19px 22px;
 box-shadow:none;
 transition:background .22s ease,color .22s ease;
}
.faq .accordion-button:not(.collapsed){
 background:rgba(61,123,255,.16);
 color:#fff;
}
.faq .accordion-button:focus{
 box-shadow:0 0 0 3px rgba(34,211,238,.18);
 border-color:transparent;
}
.faq .accordion-button::after{
 filter:invert(1) brightness(1.6);
}
.faq .accordion-body{
 color:var(--muted);
 font-size:14.8px;
 line-height:1.9;
 padding:0 22px 22px;
}
/* ---------- join ---------- */
.join-panel{
 border-radius:var(--radius-lg);
 border:1px solid var(--line-strong);
 background:
 radial-gradient(520px 280px at 12% 0%,rgba(34,211,238,.16),transparent 62%),
 linear-gradient(150deg,rgba(18,34,68,.92),rgba(8,16,34,.96));
 box-shadow:var(--shadow);
 padding:44px 42px;
 display:grid;
 grid-template-columns:1fr 1fr;
 gap:44px;
 align-items:center;
}
.join-panel h2{
 font-size:clamp(22px,2.5vw,30px);
 font-weight:800;
 color:#fff;
 margin:0 0 14px;
 line-height:1.35;
 letter-spacing:-.4px;
}
.join-panel p{color:var(--muted);font-size:15px;margin:0 0 22px;line-height:1.9;}
.join-points{list-style:none;padding:0;margin:0;display:grid;gap:11px;}
.join-points li{display:flex;gap:10px;color:#c3d2ee;font-size:14.5px;}
.join-points i{color:var(--cyan);margin-top:5px;font-size:13px;}
.join-form{display:grid;gap:15px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field label{
 display:block;
 font-size:13px;
 color:var(--muted);
 margin-bottom:7px;
 letter-spacing:.4px;
}
.field input,.field select,.field textarea{
 width:100%;
 padding:13px 15px;
 border-radius:12px;
 background:rgba(4,10,22,.72);
 border:1px solid var(--line);
 color:var(--text);
 font-size:15px;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2);}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;
 border-color:rgba(34,211,238,.6);
 background:rgba(6,14,30,.9);
 box-shadow:0 0 0 3px rgba(34,211,238,.16);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-note{font-size:12.5px;color:var(--muted-2);line-height:1.8;margin:2px 0 0;}
/* ---------- footer ---------- */
.site-footer{
 margin-top:50px;
 padding:58px 0 26px;
 border-top:1px solid var(--line);
 background:linear-gradient(180deg,rgba(6,12,26,.55),rgba(3,6,15,.96));
}
.footer-grid{
 display:grid;
 grid-template-columns:1.6fr 1fr 1fr 1fr;
 gap:34px;
}
.footer-brand{
 display:flex;align-items:center;gap:11px;
 font-size:17px;color:#fff;
 margin-bottom:16px;
}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px;}
.footer-about{color:var(--muted);font-size:14.5px;max-width:350px;margin:0;line-height:1.9;}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 15px;letter-spacing:.6px;font-weight:700;}
.footer-col a{
 display:block;
 color:var(--muted);
 font-size:14.5px;
 padding:6px 0;
 transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--cyan);transform:translateX(3px);}
.footer-bottom{
 display:flex;
 justify-content:space-between;
 align-items:center;
 gap:16px;
 flex-wrap:wrap;
 margin-top:40px;
 padding-top:22px;
 border-top:1px solid var(--line);
 color:var(--muted-2);
 font-size:13px;
}
.footer-bottom .tech{letter-spacing:.6px;color:var(--muted-2);}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .main-nav{display:none;}
 .nav-toggle{display:grid;place-items:center;}
 .nav-right .btn{display:none;}
 .metric-grid{grid-template-columns:repeat(2,1fr);margin-top:-64px;}
 .matrix-grid{grid-template-columns:repeat(2,1fr);}
 .timeline{grid-template-columns:repeat(2,1fr);gap:30px 22px;}
 .timeline::before{display:none;}
 .trust-grid{grid-template-columns:repeat(2,1fr);}
 .join-panel{grid-template-columns:1fr;gap:32px;padding:38px 30px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
 body{font-size:15.5px;}
 .hero-slash{padding:54px 0 104px;clip-path:polygon(0 0,100% 0,100% 84%,0 100%);}
 .hero-sub{font-size:15.5px;}
 .section{padding:54px 0;}
 .compare{grid-template-columns:1fr;}
 .qa-grid{grid-template-columns:1fr;}
 .news-item{flex-wrap:wrap;gap:12px;padding:18px 20px;}
 .news-date{min-width:auto;}
 .news-title{flex:1 1 100%;order:2;}
 .join-panel{padding:32px 24px;}
 .join-panel h2{font-size:23px;}
 .form-row{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .metric-grid{grid-template-columns:1fr;}
 .matrix-grid{grid-template-columns:1fr;}
 .trust-grid{grid-template-columns:1fr;}
 .timeline{grid-template-columns:1fr;}
 .hero-title{font-size:28px;}
 .section-title{font-size:21px;}
 .btn{padding:12px 22px;font-size:14.5px;}
 .footer-grid{grid-template-columns:1fr;}
 .compare-col{padding:24px 20px;}
 .metric-card{padding:20px 18px;}
}

/* roulang page: category2 */
:root{
  --bg:#050a16;
  --bg-soft:#081226;
  --bg-deep:#03060f;
  --panel:rgba(18,31,58,.66);
  --panel-strong:rgba(22,38,70,.9);
  --line:rgba(122,163,255,.16);
  --line-strong:rgba(122,163,255,.32);
  --text:#e9eeff;
  --muted:#93a5c8;
  --muted-2:#6f81a6;
  --primary:#3d7bff;
  --primary-deep:#2a5cf0;
  --cyan:#22d3ee;
  --violet:#7c5cff;
  --gold:#ffcf6b;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-sm:0 6px 18px rgba(3,8,20,.45);
  --shadow:0 18px 48px rgba(3,8,20,.6);
  --glow:0 0 0 1px rgba(61,123,255,.4),0 14px 42px rgba(45,110,255,.38);
  --glow-cyan:0 0 0 1px rgba(34,211,238,.4),0 12px 38px rgba(34,211,238,.28);
  --gap:28px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  background:
    radial-gradient(1100px 620px at 12% -8%,rgba(61,123,255,.22),transparent 62%),
    radial-gradient(900px 560px at 92% 4%,rgba(124,92,255,.18),transparent 60%),
    linear-gradient(180deg,#050a16 0%,#040814 55%,#03060f 100%);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cyan);}
button,input,select,textarea{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.2px;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
::selection{background:rgba(61,123,255,.42);color:#fff;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;border-radius:8px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;
  letter-spacing:.3px;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-glow{background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);color:#fff;box-shadow:var(--glow);}
.btn-glow:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(34,211,238,.55),0 18px 50px rgba(61,123,255,.5);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{background:rgba(122,163,255,.08);border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{background:rgba(61,123,255,.18);border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);}
.btn-cyan{background:linear-gradient(135deg,var(--cyan),#3d7bff);color:#04121f;font-weight:700;box-shadow:var(--glow-cyan);}
.btn-cyan:hover{transform:translateY(-2px);color:#04121f;}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}
.btn-linkline{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--cyan);
  font-weight:600;transition:gap .2s ease,color .2s ease;
}
.btn-linkline:hover{gap:10px;color:#8ceaf8;}

/* ---------- badges / tags ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:#8ceaf8;
  font-size:12.5px;letter-spacing:.6px;
}
.badge-gold{background:rgba(255,207,107,.12);border-color:rgba(255,207,107,.34);color:var(--gold);}
.tag{
  display:inline-block;padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(122,163,255,.1);border:1px solid var(--line);color:var(--muted);
  font-size:12.5px;transition:all .2s ease;
}
.tag:hover{background:rgba(61,123,255,.22);color:#cfe0ff;border-color:var(--line-strong);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;backdrop-filter:blur(18px);
  background:rgba(5,10,22,.78);border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));color:#04101f;
  font-weight:800;font-size:17px;box-shadow:var(--glow-cyan);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:#fff;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;padding:9px 15px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--muted);transition:all .2s ease;
}
.main-nav a:hover{color:#fff;background:rgba(61,123,255,.14);}
.main-nav a.active{color:#fff;background:rgba(61,123,255,.2);box-shadow:inset 0 0 0 1px rgba(61,123,255,.45);}
.nav-right{display:flex;align-items:center;gap:12px;}
.lang-switch{
  display:flex;align-items:center;gap:2px;padding:3px;border-radius:var(--radius-pill);
  background:rgba(122,163,255,.08);border:1px solid var(--line);
}
.lang-btn{
  border:none;background:transparent;color:var(--muted);font-size:12.5px;
  padding:5px 13px;border-radius:var(--radius-pill);cursor:pointer;transition:all .2s ease;
}
.lang-btn.active{background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;box-shadow:0 4px 14px rgba(61,123,255,.45);}
.lang-btn:hover{color:#fff;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:rgba(122,163,255,.1);
  border:1px solid var(--line);color:var(--text);cursor:pointer;
}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:rgba(6,12,26,.97);
  padding:16px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{display:block;padding:12px 14px;border-radius:12px;color:var(--muted);font-size:15.5px;margin-bottom:6px;}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(61,123,255,.16);color:#fff;}
.mobile-drawer .btn{width:100%;margin-top:10px;}

/* ---------- section base ---------- */
.section{padding:66px 0;}
.section-tight{padding:44px 0;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{font-size:clamp(23px,3vw,32px);color:#fff;margin-bottom:12px;}
.section-sub{color:var(--muted);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
  color:var(--cyan);text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0;margin:0;}

/* ---------- hero ---------- */
.hero{padding:38px 0 10px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);margin-bottom:18px;}
.crumbs a{color:var(--muted);}
.crumbs i{font-size:10px;}
.hero-cover{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  background:
    radial-gradient(620px 300px at 16% 18%,rgba(34,211,238,.36),transparent 66%),
    radial-gradient(700px 340px at 84% 8%,rgba(124,92,255,.42),transparent 68%),
    linear-gradient(135deg,#0b1830 0%,#111f3f 52%,#0a1226 100%);
  padding:46px 44px 0;
}
.hero-cover::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,180,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,180,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;max-width:780px;}
.hero-title{font-size:clamp(28px,4.4vw,46px);line-height:1.24;color:#fff;margin:16px 0 18px;}
.hero-title span{
  background:linear-gradient(120deg,var(--cyan),#8fa8ff 55%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:#c3d2f0;font-size:16.5px;max-width:700px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 34px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  padding:20px 22px;border-radius:var(--radius) var(--radius) 0 0;
  background:linear-gradient(180deg,rgba(10,20,40,.86),rgba(8,16,34,.6));
  border:1px solid var(--line);border-bottom:0;backdrop-filter:blur(10px);
  position:relative;z-index:3;
}
.hero-stat b{display:block;font-size:22px;color:#fff;letter-spacing:.5px;}
.hero-stat span{font-size:12.5px;color:var(--muted-2);}
.series-bar{
  position:relative;z-index:3;margin:0 -44px;padding:14px 44px;
  background:rgba(4,9,20,.72);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;
  overflow-x:auto;scrollbar-width:none;
}
.series-bar::-webkit-scrollbar{display:none;}
.series-bar .series-label{
  flex:0 0 auto;font-size:12.5px;color:var(--muted-2);letter-spacing:1px;
  padding-right:12px;border-right:1px solid var(--line);margin-right:4px;
}
.series-link{
  flex:0 0 auto;padding:7px 16px;border-radius:var(--radius-pill);font-size:13.5px;
  color:var(--muted);background:rgba(122,163,255,.08);border:1px solid var(--line);
  transition:all .2s ease;
}
.series-link:hover,.series-link.is-active{
  color:#fff;background:rgba(61,123,255,.24);border-color:rgba(61,123,255,.5);
}

/* ---------- glass card ---------- */
.glass-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);padding:24px;height:100%;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);background:var(--panel-strong);}

/* ---------- metric board ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.metric{
  position:relative;padding:24px 22px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(20,35,66,.82),rgba(10,19,38,.7));
  border:1px solid var(--line);overflow:hidden;
}
.metric::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--cyan),var(--primary),transparent);
}
.metric i{font-size:17px;color:var(--cyan);margin-bottom:12px;display:block;}
.metric b{display:block;font-size:27px;color:#fff;letter-spacing:.5px;}
.metric span{display:block;font-size:13px;color:var(--muted-2);margin-top:4px;}
.metric p{font-size:13.5px;color:var(--muted);margin-top:12px;}

/* ---------- circle cards ---------- */
.circle-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.circle-card{
  display:flex;flex-direction:column;gap:14px;padding:22px;border-radius:var(--radius);
  background:linear-gradient(165deg,rgba(19,33,63,.8),rgba(9,17,34,.72));
  border:1px solid var(--line);height:100%;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.circle-card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.42);box-shadow:var(--glow-cyan);}
.circle-top{display:flex;align-items:center;gap:12px;}
.circle-icon{
  width:44px;height:44px;flex:0 0 44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(61,123,255,.34),rgba(34,211,238,.24));
  border:1px solid var(--line-strong);color:#bfe3ff;font-size:17px;
}
.circle-card h3{font-size:16.5px;color:#fff;}
.circle-card .meta{font-size:12.5px;color:var(--muted-2);}
.circle-desc{font-size:14px;color:var(--muted);flex:1;}
.circle-tags{display:flex;flex-wrap:wrap;gap:7px;}
.circle-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted-2);
}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:8px;}
.timeline-item{
  display:grid;grid-template-columns:120px 1fr;gap:22px;
  padding:20px 0;border-bottom:1px dashed var(--line);
}
.timeline-item:last-child{border-bottom:0;}
.timeline-when b{display:block;font-size:20px;color:#fff;}
.timeline-when span{font-size:12.5px;color:var(--muted-2);}
.timeline-body h4{font-size:16.5px;color:#fff;margin-bottom:6px;}
.timeline-body p{font-size:14px;color:var(--muted);}
.timeline-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.compare-col{padding:26px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(12,22,44,.6);}
.compare-col.is-good{
  background:linear-gradient(165deg,rgba(22,46,90,.72),rgba(10,20,40,.72));
  border-color:rgba(61,123,255,.42);box-shadow:var(--glow);
}
.compare-col h3{font-size:18px;color:#fff;margin-bottom:8px;}
.compare-col .sub{font-size:13px;color:var(--muted-2);margin-bottom:18px;}
.compare-list li{
  display:flex;gap:11px;align-items:flex-start;padding:11px 0;font-size:14.5px;color:var(--muted);
  border-bottom:1px solid rgba(122,163,255,.09);
}
.compare-list li:last-child{border-bottom:0;}
.compare-list i{font-size:13px;margin-top:6px;color:var(--muted-2);}
.compare-col.is-good .compare-list i{color:var(--cyan);}
.compare-col.is-good .compare-list li{color:#cfdcf7;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}
.step{
  position:relative;padding:24px 20px;border-radius:var(--radius);
  background:rgba(13,24,47,.66);border:1px solid var(--line);height:100%;
}
.step-num{
  font-size:12.5px;font-weight:700;color:var(--cyan);letter-spacing:1.4px;margin-bottom:10px;display:block;
}
.step h4{font-size:15.5px;color:#fff;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--muted);}
.step::after{
  content:"";position:absolute;right:-9px;top:34px;width:18px;height:2px;
  background:linear-gradient(90deg,var(--line-strong),transparent);
}
.step:last-child::after{display:none;}

/* ---------- news ---------- */
.news-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.news-item{
  display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(17,30,57,.78),rgba(9,17,34,.7));
  border:1px solid var(--line);height:100%;transition:transform .25s ease,border-color .25s ease;
}
.news-item:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.news-item .news-kind{
  font-size:12px;letter-spacing:1.6px;color:var(--gold);text-transform:uppercase;
}
.news-item h4{font-size:16.5px;color:#fff;}
.news-item p{font-size:14px;color:var(--muted);flex:1;}
.news-meta{display:flex;gap:14px;font-size:12.5px;color:var(--muted-2);}

/* ---------- safety ---------- */
.safety-band{
  border-radius:var(--radius-lg);padding:40px 38px;
  background:
    radial-gradient(600px 300px at 88% 12%,rgba(124,92,255,.3),transparent 66%),
    linear-gradient(150deg,rgba(14,26,52,.92),rgba(7,14,30,.92));
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.safety-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px;}
.safety-item{
  display:flex;gap:14px;padding:18px;border-radius:var(--radius-sm);
  background:rgba(9,18,38,.7);border:1px solid var(--line);
}
.safety-item i{color:var(--cyan);font-size:16px;margin-top:5px;}
.safety-item h4{font-size:15.5px;color:#fff;margin-bottom:6px;}
.safety-item p{font-size:13.5px;color:var(--muted);}

/* ---------- quick answer ---------- */
.quick-chips{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.quick-chip{
  padding:11px 18px;border-radius:var(--radius-pill);font-size:14px;color:#cfe0ff;
  background:rgba(61,123,255,.12);border:1px solid var(--line-strong);
  transition:all .2s ease;
}
.quick-chip:hover{background:rgba(34,211,238,.2);border-color:rgba(34,211,238,.46);color:#fff;transform:translateY(-2px);}
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}

/* ---------- FAQ (bootstrap accordion restyle) ---------- */
.faq-wrap .accordion-item{
  background:rgba(13,24,47,.7);border:1px solid var(--line);border-radius:var(--radius)!important;
  margin-bottom:12px;overflow:hidden;
}
.faq-wrap .accordion-button{
  background:transparent;color:#fff;font-size:15.5px;font-weight:600;padding:18px 22px;
  box-shadow:none;border-radius:var(--radius)!important;
}
.faq-wrap .accordion-button:not(.collapsed){background:rgba(61,123,255,.14);color:#fff;}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-wrap .accordion-button::after{
  filter:invert(78%) sepia(38%) saturate(560%) hue-rotate(170deg) brightness(105%);
}
.faq-wrap .accordion-body{padding:4px 22px 20px;color:var(--muted);font-size:14.5px;}

/* ---------- join form ---------- */
.join-band{
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);overflow:hidden;
  background:linear-gradient(140deg,rgba(16,30,60,.94),rgba(8,15,32,.94));
  box-shadow:var(--shadow);
}
.join-form{padding:34px 30px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.4px;}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);
  background:rgba(6,12,26,.86);border:1px solid var(--line);color:var(--text);
  font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(34,211,238,.55);box-shadow:0 0 0 3px rgba(34,211,238,.14);outline:none;
}
.field select option{background:#0a1428;color:var(--text);}
.form-note{font-size:12.5px;color:var(--muted-2);margin-top:12px;}
.join-aside{
  padding:34px 30px;background:linear-gradient(180deg,rgba(61,123,255,.16),rgba(124,92,255,.1));
  border-left:1px solid var(--line);height:100%;
}
.join-aside h3{font-size:19px;color:#fff;margin-bottom:14px;}
.aside-list li{display:flex;gap:10px;font-size:14px;color:#c6d6f5;padding:9px 0;}
.aside-list i{color:var(--cyan);margin-top:5px;font-size:13px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:70px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,10,22,.6),rgba(3,6,15,.96));
  padding:54px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand b{font-size:17px;color:#fff;}
.footer-about{font-size:14px;color:var(--muted);max-width:330px;}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.6px;}
.footer-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0;transition:all .2s ease;}
.footer-col a:hover{color:var(--cyan);transform:translateX(3px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:38px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted-2);
}
.footer-bottom .tech{font-size:12.5px;color:var(--muted-2);letter-spacing:.5px;}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .circle-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));}
  .step::after{display:none;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .lang-switch{display:none;}
  .hero-cover{padding:34px 26px 0;}
  .series-bar{margin:0 -26px;padding:12px 26px;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .circle-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .safety-grid{grid-template-columns:1fr;}
  .join-aside{border-left:0;border-top:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:18px;}
  .compare-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline-item{grid-template-columns:1fr;gap:8px;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:520px){
  .brand-text{font-size:16px;}
  .hero-cover{padding:26px 18px 0;border-radius:var(--radius);}
  .series-bar{margin:0 -18px;padding:12px 18px;}
  .metric-grid,.circle-grid,.news-list,.quick-grid,.steps{grid-template-columns:1fr;}
  .safety-band{padding:28px 20px;}
  .join-form,.join-aside{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-title{font-size:21px;}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}