/* roulang page: index */
:root{
  --bg:#060A13;
  --bg2:#0A1222;
  --glass:rgba(14,26,48,.68);
  --glass-strong:rgba(18,34,60,.80);
  --primary:#3DDCFF;
  --primary-deep:#1D8FFF;
  --purple:#7C5CFF;
  --accent:#FF8A4C;
  --success:#3BE38F;
  --text:#EAF6FF;
  --muted:#9CB2C8;
  --stroke:rgba(110,200,255,.18);
  --stroke-strong:rgba(61,220,255,.42);
  --danger:#FF5C7A;
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.42);
  --glow-btn:0 0 0 1px rgba(61,220,255,.28),0 0 24px rgba(61,220,255,.28);
  --nav-h:68px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(120,200,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(61,220,255,.12),transparent 62%),
    radial-gradient(620px 400px at 92% 8%,rgba(124,92,255,.11),transparent 64%),
    radial-gradient(720px 460px at 50% 108%,rgba(29,143,255,.10),transparent 66%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.wrap{width:min(1260px,92%);margin:0 auto;position:relative;z-index:2;}
.sec{padding:96px 0;position:relative;z-index:2;}
.sec-tight{padding:72px 0;}
.sec-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);
  background:rgba(61,220,255,.08);
  border:1px solid var(--stroke);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
  font-weight:500;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.sec-title{font-size:34px;font-weight:700;margin-bottom:14px;}
.sec-sub{color:var(--muted);font-size:15.5px;max-width:680px;}
.num-mono{font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.04em;}
/* ---------- 按钮 ---------- */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-main{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-deep) 52%,var(--purple) 100%);
  color:#04121F;
  box-shadow:var(--glow-btn);
}
.btn-main:hover{
  color:#04121F;
  transform:translateY(-2px);
  filter:brightness(1.1);
  box-shadow:0 0 0 1px rgba(61,220,255,.38),0 0 32px rgba(61,220,255,.42);
}
.btn-main:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(61,220,255,.3),0 0 14px rgba(61,220,255,.3);}
.btn-line{
  background:var(--glass);
  color:var(--text);
  border-color:var(--stroke-strong);
  backdrop-filter:blur(10px);
}
.btn-line:hover{
  color:#fff;
  background:rgba(61,220,255,.12);
  border-color:var(--primary);
  transform:translateY(-2px);
}
.btn-ghost{
  background:transparent;color:var(--primary);padding:0 8px;min-height:40px;
}
.btn-ghost i{transition:transform .22s ease;}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(6,10,19,.82);
  backdrop-filter:blur(16px);
  border-bottom-color:var(--stroke);
}
.nav-inner{display:flex;align-items:center;gap:32px;width:min(1260px,92%);margin:0 auto;position:relative;z-index:2;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(140deg,rgba(61,220,255,.24),rgba(124,92,255,.24));
  border:1px solid var(--stroke-strong);
  display:grid;place-items:center;
  color:var(--primary);font-size:17px;
  box-shadow:0 0 20px rgba(61,220,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15.5px;font-weight:700;letter-spacing:.02em;}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;
  font-size:14.5px;font-weight:500;color:var(--muted);
  padding:10px 14px;border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(110,200,255,.07);}
.nav-link.active{color:var(--text);}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 10px var(--primary);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--stroke);
  color:var(--muted);cursor:pointer;
  transition:all .22s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--stroke-strong);background:rgba(61,220,255,.1);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:var(--glass);border:1px solid var(--stroke);color:var(--text);font-size:17px;}
/* ---------- 抽屉 ---------- */
.drawer{background:rgba(8,14,26,.96)!important;backdrop-filter:blur(18px);border-left:1px solid var(--stroke)!important;width:300px!important;color:var(--text);}
.drawer .offcanvas-header{border-bottom:1px solid var(--stroke);padding:18px 20px;}
.drawer .offcanvas-body{padding:24px 20px;display:flex;flex-direction:column;gap:22px;}
.drawer-close{width:40px;height:40px;border-radius:10px;background:transparent;border:1px solid var(--stroke);color:var(--muted);}
.drawer-close:hover{color:var(--primary);border-color:var(--stroke-strong);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  font-size:17px;font-weight:600;padding:13px 14px;border-radius:12px;color:var(--muted);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(110,200,255,.07);color:var(--text);}
.drawer-nav a.active{color:var(--primary);background:rgba(61,220,255,.09);border-color:var(--stroke);}
/* ---------- Hero ---------- */
.hero{padding:calc(var(--nav-h) + 72px) 0 88px;position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(30px,3.6vw,52px);font-weight:800;line-height:1.16;margin-bottom:20px;}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--primary),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{color:var(--muted);font-size:16.5px;line-height:1.85;max-width:560px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.chip-row{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border-radius:999px;
  background:var(--glass);border:1px solid var(--stroke);
  font-size:12.5px;color:var(--muted);
  backdrop-filter:blur(8px);
}
.pill b{color:var(--text);font-weight:600;}
.pill i{color:var(--primary);font-size:12px;}
.hero-visual{position:relative;}
.kv-frame{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--stroke-strong);
  box-shadow:0 30px 70px rgba(0,0,0,.55),0 0 0 1px rgba(61,220,255,.1);
  aspect-ratio:4/3.2;
}
.kv-frame img{width:100%;height:100%;object-fit:cover;}
.kv-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,19,.15) 0%,rgba(6,10,19,.45) 58%,rgba(6,10,19,.9) 100%);
}
.kv-scan{
  position:absolute;inset:0;
  background:repeating-linear-gradient(180deg,rgba(61,220,255,.05) 0 1px,transparent 1px 5px);
  opacity:.5;pointer-events:none;
}
.float-card{
  position:absolute;
  background:rgba(12,22,40,.86);
  border:1px solid var(--stroke-strong);
  border-radius:14px;
  padding:12px 16px;
  backdrop-filter:blur(12px);
  box-shadow:0 14px 34px rgba(0,0,0,.5);
  font-size:12.5px;
}
.float-a{top:22px;right:22px;display:flex;flex-direction:column;gap:2px;}
.float-a .fl-label{color:var(--muted);font-size:11.5px;letter-spacing:.06em;}
.float-a .fl-value{font-size:20px;font-weight:700;color:var(--primary);font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.03em;}
.float-b{left:22px;bottom:22px;display:flex;align-items:center;gap:9px;color:var(--text);}
.fl-dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 12px var(--success);}
/* ---------- Bento 玩法 ---------- */
.bento{display:grid;grid-template-columns:1.35fr 1fr;gap:20px;}
.bento-card{
  background:linear-gradient(160deg,var(--glass-strong),rgba(10,18,34,.6));
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.bento-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:0 22px 56px rgba(0,0,0,.5),0 0 24px rgba(61,220,255,.14);}
.bento-card::before{
  content:"";position:absolute;top:0;left:0;width:52px;height:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.bento-main{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;gap:26px;}
.step-list{display:flex;flex-direction:column;gap:0;}
.step-item{display:flex;gap:18px;position:relative;padding-bottom:26px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:19px;top:44px;bottom:4px;width:1px;
  background:linear-gradient(180deg,rgba(61,220,255,.5),rgba(61,220,255,.05));
}
.step-item:last-child::before{display:none;}
.step-num{
  flex:0 0 40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--stroke-strong);
  color:var(--primary);font-weight:700;font-size:14px;
  font-family:"DIN Alternate","Bahnschrift",sans-serif;
  background:rgba(61,220,255,.07);
  letter-spacing:.04em;
}
.step-body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step-body p{color:var(--muted);font-size:14px;line-height:1.7;}
.mini-bento{display:flex;flex-direction:column;gap:20px;}
.mini-card{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:24px;
  flex:1;
  transition:transform .28s ease,border-color .28s ease,background .28s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);background:var(--glass-strong);}
.mini-card h3{font-size:18px;margin:14px 0 8px;}
.mini-card p{color:var(--muted);font-size:14px;}
.mini-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  font-size:17px;
  background:linear-gradient(140deg,rgba(61,220,255,.16),rgba(124,92,255,.16));
  border:1px solid var(--stroke);
  color:var(--primary);
}
/* ---------- 奖励滚动卡 ---------- */
.reward-scroll{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,1fr);
  gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.reward-scroll::-webkit-scrollbar{height:6px;}
.reward-scroll::-webkit-scrollbar-track{background:rgba(110,200,255,.06);border-radius:99px;}
.reward-scroll::-webkit-scrollbar-thumb{background:rgba(61,220,255,.35);border-radius:99px;}
.reward-card{
  scroll-snap-align:start;
  background:linear-gradient(165deg,rgba(18,34,60,.82),rgba(10,18,34,.68));
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.reward-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:0 22px 56px rgba(0,0,0,.52),0 0 26px rgba(61,220,255,.16);}
.reward-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.reward-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.reward-card:hover .reward-thumb img{transform:scale(1.04);}
.reward-thumb .tier{
  position:absolute;top:12px;left:12px;
  padding:5px 12px;border-radius:999px;font-size:11.5px;font-weight:600;
  background:rgba(6,10,19,.78);border:1px solid var(--stroke-strong);color:var(--primary);
  backdrop-filter:blur(8px);letter-spacing:.06em;
}
.reward-body{padding:22px 22px 24px;}
.reward-body h3{font-size:18px;margin-bottom:8px;}
.reward-body p{color:var(--muted);font-size:13.5px;margin-bottom:18px;min-height:42px;}
.bar{height:8px;border-radius:99px;background:rgba(110,200,255,.12);overflow:hidden;position:relative;}
.bar span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--purple));box-shadow:0 0 14px rgba(61,220,255,.5);}
.bar-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:9px;font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.04em;}
/* ---------- 任务进度 ---------- */
.progress-panel{
  background:linear-gradient(150deg,rgba(18,34,60,.82),rgba(10,18,34,.7));
  border:1px solid var(--stroke);
  border-radius:22px;
  padding:36px;
  box-shadow:var(--shadow-card);
}
.progress-top{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:26px;}
.progress-top h3{font-size:22px;margin-bottom:8px;}
.progress-top p{color:var(--muted);font-size:14px;}
.progress-num{font-size:40px;font-weight:800;color:var(--primary);font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.03em;line-height:1;}
.rail{height:10px;border-radius:99px;background:rgba(110,200,255,.1);position:relative;overflow:hidden;}
.rail span{display:block;height:100%;width:68%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--purple));position:relative;}
.rail span::after{
  content:"";position:absolute;right:-3px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 18px var(--primary);
}
.node-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px;}
.node{
  background:var(--glass);border:1px solid var(--stroke);border-radius:14px;padding:18px;
  display:flex;flex-direction:column;gap:10px;
}
.node i{font-size:15px;}
.node .done{color:var(--success);}
.node .todo{color:var(--muted);}
.node b{font-size:14px;font-weight:600;}
.node small{color:var(--muted);font-size:12px;}
/* ---------- 资讯列表 ---------- */
.news-feature{
  position:relative;display:block;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--stroke);background:var(--glass);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease;
  height:100%;
}
.news-feature:hover{transform:translateY(-4px);border-color:var(--stroke-strong);}
.news-feature .cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.news-feature .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-feature:hover .cover img{transform:scale(1.03);}
.news-feature .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,19,.1),rgba(6,10,19,.82));}
.news-feature .tag{position:absolute;top:14px;left:14px;z-index:3;}
.news-feature .body{padding:24px 26px 26px;}
.news-feature h3{font-size:20px;margin-bottom:10px;line-height:1.45;}
.news-feature p{color:var(--muted);font-size:14px;}
.meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--muted);margin-top:16px;}
.meta i{color:var(--primary);font-size:12px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:11.5px;font-weight:600;
  background:rgba(61,220,255,.12);border:1px solid rgba(61,220,255,.3);color:var(--primary);
  backdrop-filter:blur(8px);
}
.tag.violet{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.32);color:#B6A5FF;}
.tag.orange{background:rgba(255,138,76,.14);border-color:rgba(255,138,76,.32);color:#FFB185;}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-item{
  display:flex;gap:16px;align-items:center;
  background:var(--glass);border:1px solid var(--stroke);border-radius:16px;
  padding:14px;transition:transform .24s ease,border-color .24s ease,background .24s ease;
}
.news-item:hover{transform:translateX(4px);border-color:var(--stroke-strong);background:var(--glass-strong);}
.news-item .thumb{flex:0 0 108px;aspect-ratio:16/10;border-radius:12px;overflow:hidden;}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;}
.news-item .txt{flex:1;min-width:0;}
.news-item h4{font-size:15px;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item p{font-size:12.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .arrow{color:var(--muted);font-size:13px;transition:color .22s ease,transform .22s ease;}
.news-item:hover .arrow{color:var(--primary);transform:translateX(3px);}
.empty-state{
  border:1px dashed var(--stroke-strong);
  border-radius:var(--radius-card);
  background:var(--glass);
  padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--primary);margin-bottom:16px;display:block;}
.empty-state p{color:var(--muted);margin-bottom:20px;}
/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:linear-gradient(120deg,rgba(18,34,60,.7),rgba(10,18,34,.55));
  border:1px solid var(--stroke);border-radius:22px;padding:34px;
}
.stat b{display:block;font-size:32px;font-weight:800;color:var(--primary);font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.03em;}
.stat span{font-size:13px;color:var(--muted);}
/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;
  border:1px solid var(--stroke-strong);
  background:linear-gradient(120deg,rgba(29,143,255,.18),rgba(124,92,255,.16) 52%,rgba(6,10,19,.6));
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;left:-60px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,220,255,.22),transparent 68%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(180deg,rgba(61,220,255,.045) 0 1px,transparent 1px 6px);
  pointer-events:none;
}
.cta-band h2{font-size:30px;margin-bottom:12px;position:relative;z-index:2;}
.cta-band p{color:var(--muted);font-size:14.5px;position:relative;z-index:2;max-width:520px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start;}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--stroke)!important;
  border-radius:14px!important;
  margin-bottom:12px;
  overflow:hidden;
  position:relative;
}
.accordion-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--primary),transparent);}
.accordion-button{
  background:transparent!important;
  color:var(--text)!important;
  font-size:15.5px;font-weight:600;
  padding:20px 24px;
  box-shadow:none!important;
  border-radius:14px!important;
}
.accordion-button:not(.collapsed){color:var(--primary)!important;}
.accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none!important;
  font-size:13px;color:var(--primary);
  width:auto;height:auto;transform:none;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{content:"\f068";transform:none;}
.accordion-body{padding:0 24px 22px;color:var(--muted);font-size:14.5px;line-height:1.85;}
/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--stroke);
  background:linear-gradient(180deg,rgba(6,10,19,.4),rgba(4,7,13,.95));
  padding:72px 0 0;
  position:relative;z-index:2;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--muted);font-size:13.5px;max-width:300px;line-height:1.8;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:18px;color:var(--text);letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--muted);font-size:13.5px;}
.footer-col a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:11px;color:var(--muted);font-size:13.5px;}
.footer-contact i{color:var(--primary);width:16px;}
.footer-bottom{
  border-top:1px solid var(--stroke);
  padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted);
  background:rgba(3,6,11,.7);
}
.footer-bottom .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;width:min(1260px,92%);}
/* ---------- 搜索框 ---------- */
.search-field{
  display:flex;gap:10px;background:var(--glass);border:1px solid var(--stroke);
  border-radius:14px;padding:10px;backdrop-filter:blur(10px);
}
.search-field input{
  flex:1;background:transparent;border:none;color:var(--text);font-size:14.5px;padding:0 12px;min-height:44px;
}
.search-field input::placeholder{color:rgba(156,178,200,.75);}
.search-field input:focus{outline:none;}
/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sec{padding:80px 0;}
  .hero-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-right .btn-main{display:none;}
  .hero{padding:calc(var(--nav-h) + 52px) 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .bento{grid-template-columns:1fr;}
  .bento-main{grid-row:auto;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .node-grid{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .sec-title{font-size:28px;}
}
@media (max-width:767px){
  .sec{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:15px;}
  .cta-band{padding:36px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:24px;}
  .reward-scroll{grid-auto-columns:minmax(250px,82%);}
  .news-feature h3{font-size:17.5px;}
  .progress-panel{padding:24px;}
  .stats{padding:24px;}
}
@media (max-width:575px){
  :root{--nav-h:60px;}
  .sec{padding:44px 0;}
  .hero{padding:calc(var(--nav-h) + 36px) 0 48px;}
  .hero h1{font-size:27px;}
  .btn-main,.btn-line{width:100%;}
  .hero-cta{flex-direction:column;width:100%;}
  .chip-row{gap:8px;}
  .pill{font-size:12px;padding:7px 12px;}
  .node-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .news-item .thumb{flex:0 0 84px;}
  .brand-text b{font-size:14px;}
  .float-a{top:12px;right:12px;padding:8px 12px;}
  .float-b{left:12px;bottom:12px;padding:8px 12px;}
}

/* roulang page: category1 */
:root{
  --bg:#060A13;
  --bg2:#0A1222;
  --glass:rgba(14,26,48,.68);
  --glass2:rgba(18,34,60,.80);
  --primary:#3DDCFF;
  --primary-deep:#1D8FFF;
  --secondary:#7C5CFF;
  --accent:#FF8A4C;
  --success:#3BE38F;
  --danger:#FF5C7A;
  --text:#EAF6FF;
  --muted:#9CB2C8;
  --line:rgba(110,200,255,.18);
  --line-strong:rgba(110,200,255,.34);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:12px;
  --shadow:0 18px 50px rgba(0,0,0,.42);
  --glow:0 0 0 1px rgba(61,220,255,.28), 0 0 24px rgba(61,220,255,.28);
  --wrap:1240px;
  --num-font:"DIN Alternate","Bahnschrift","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(61,220,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(61,220,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(680px 420px at 12% 6%,rgba(61,220,255,.10),transparent 62%),
    radial-gradient(720px 460px at 88% 22%,rgba(124,92,255,.10),transparent 66%),
    radial-gradient(560px 380px at 50% 96%,rgba(255,138,76,.06),transparent 70%);
  pointer-events:none;
  z-index:0;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:72px;
  display:flex;
  align-items:center;
  background:linear-gradient(180deg,rgba(6,10,19,.86),rgba(6,10,19,.42));
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(8,14,26,.86);
  backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.40);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  width:100%;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:13px;
  display:grid;
  place-items:center;
  color:#04121e;
  font-size:17px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{
  font-size:16px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--text);
  white-space:nowrap;
}
.brand-text span{
  font-family:var(--num-font);
  font-size:10px;
  letter-spacing:.22em;
  color:var(--muted);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  border-radius:10px;
}
.nav-link::before{
  content:"";
  position:absolute;
  left:14px;
  bottom:8px;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--primary);
  opacity:0;
  transform:translateY(4px);
  transition:.25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(61,220,255,.06);}
.nav-link.active{color:var(--text);}
.nav-link.active::before{opacity:1;transform:translateY(0);}
.header-side{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.icon-btn{
  width:44px;
  height:44px;
  border-radius:12px;
  display:grid;
  place-items:center;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(14,26,48,.5);
  transition:.25s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);box-shadow:0 0 18px rgba(61,220,255,.20);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  place-items:center;
  font-size:18px;
  color:var(--text);
  border:1px solid var(--line);
  background:rgba(14,26,48,.6);
}
.drawer-mask{display:none;}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  letter-spacing:.02em;
  transition:transform .22s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-main{
  color:#04121e;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep) 55%,var(--secondary));
  box-shadow:var(--glow);
}
.btn-main:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(61,220,255,.45),0 0 32px rgba(61,220,255,.42);
  color:#04121e;
}
.btn-main:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(61,220,255,.35),0 0 14px rgba(61,220,255,.28);}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;}
.btn-glass{
  color:var(--text);
  background:var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);
}
.btn-glass:hover{background:rgba(61,220,255,.12);color:var(--text);transform:translateY(-2px);border-color:var(--primary);}
.btn-ghost{
  color:var(--primary);
  padding:0 8px;
  min-height:44px;
  font-weight:600;
}
.btn-ghost i{transition:transform .25s ease;}
.btn-ghost:hover{color:#7fe9ff;}
.btn-ghost:hover i{transform:translateX(4px);}
/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:56px 0 72px;
  overflow:hidden;
  border-bottom:1px solid rgba(110,200,255,.10);
}
.hero-media{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center right;
  opacity:.30;
  z-index:0;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(6,10,19,.96) 0%,rgba(6,10,19,.86) 46%,rgba(6,10,19,.58) 100%),
    repeating-linear-gradient(180deg,rgba(61,220,255,.045) 0 1px,transparent 1px 5px);
  z-index:1;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.32fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb-nav a:hover{color:var(--primary);}
.breadcrumb-nav .sep{opacity:.5;}
.breadcrumb-nav .current{color:var(--primary);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 15px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--primary);
  border-radius:var(--r-pill);
  background:rgba(61,220,255,.10);
  border:1px solid rgba(61,220,255,.28);
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:.02em;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:20px;
  max-width:620px;
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:32px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:36px;
}
.hero-stats li{
  min-width:132px;
  padding:14px 18px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.hero-stats b{
  display:block;
  font-family:var(--num-font);
  font-size:22px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--primary);
}
.hero-stats span{font-size:13px;color:var(--muted);}
.hero-panel{
  padding:26px;
  border-radius:var(--r-card);
  background:var(--glass2);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  backdrop-filter:blur(16px);
}
.panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:15px;
  font-weight:600;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.panel-head span{
  font-family:var(--num-font);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:14.5px;
  color:var(--muted);
}
.check-list li i{
  width:22px;
  height:22px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-size:11px;
  flex-shrink:0;
  color:#04121e;
  background:var(--success);
}
.check-list li .dot{
  width:22px;
  height:22px;
  border-radius:50%;
  flex-shrink:0;
  border:1px dashed rgba(110,200,255,.45);
}
.check-list li.done{color:var(--text);}
.progress-row{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:22px;
}
.progress-track{
  flex:1;
  height:9px;
  border-radius:var(--r-pill);
  background:rgba(6,12,24,.9);
  border:1px solid rgba(110,200,255,.16);
  overflow:hidden;
}
.progress-track span{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  box-shadow:0 0 18px rgba(61,220,255,.6);
}
.progress-row b{
  font-family:var(--num-font);
  font-size:14px;
  letter-spacing:.04em;
  color:var(--primary);
}
.panel-figure{
  margin-top:22px;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
}
.panel-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .5s ease;
}
.panel-figure:hover img{transform:scale(1.02);}
/* ---------- sections ---------- */
.section{padding:96px 0;position:relative;z-index:2;}
.section-alt{background:linear-gradient(180deg,rgba(10,18,34,.72),rgba(6,10,19,.30));border-top:1px solid rgba(110,200,255,.08);border-bottom:1px solid rgba(110,200,255,.08);}
.section-head{max-width:760px;margin-bottom:52px;}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  font-family:var(--num-font);
  color:var(--primary);
}
.section-tag::before{
  content:"";
  width:26px;
  height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.section-title{
  margin-top:14px;
  font-size:clamp(24px,3vw,36px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:.02em;
}
.section-desc{
  margin-top:16px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
}
/* ---------- timeline ---------- */
.timeline{position:relative;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:88px minmax(0,1fr);
  gap:26px;
  padding-bottom:34px;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:43px;
  top:60px;
  bottom:2px;
  width:2px;
  background:linear-gradient(180deg,rgba(61,220,255,.62),rgba(124,92,255,.14));
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:56px;
  height:56px;
  border-radius:50%;
  display:grid;
  place-items:center;
  justify-self:center;
  font-family:var(--num-font);
  font-size:17px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--primary);
  background:rgba(8,16,30,.95);
  border:1px solid rgba(61,220,255,.40);
  box-shadow:0 0 22px rgba(61,220,255,.22);
}
.tl-body{
  padding:22px 26px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.tl-body:hover{
  transform:translateY(-4px);
  border-color:rgba(61,220,255,.42);
  box-shadow:0 18px 46px rgba(0,0,0,.40),0 0 24px rgba(61,220,255,.14);
}
.tl-title{font-size:19px;font-weight:600;letter-spacing:.02em;}
.tl-text{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted);}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
}
/* ---------- badges ---------- */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  font-size:12.5px;
  border-radius:var(--r-pill);
  background:rgba(61,220,255,.10);
  border:1px solid rgba(61,220,255,.26);
  color:var(--primary);
}
.badge-pill.violet{background:rgba(124,92,255,.12);border-color:rgba(124,92,255,.30);color:#b7a5ff;}
.badge-pill.orange{background:rgba(255,138,76,.12);border-color:rgba(255,138,76,.30);color:#ffb387;}
.badge-pill.green{background:rgba(59,227,143,.12);border-color:rgba(59,227,143,.30);color:#7ff0bb;}
/* ---------- bento ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.bento-item{
  position:relative;
  padding:28px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.bento-item::after{
  content:"";
  position:absolute;
  inset:auto -30% -60% auto;
  width:200px;
  height:200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(61,220,255,.16),transparent 68%);
  pointer-events:none;
}
.bento-item:hover{
  transform:translateY(-4px);
  border-color:rgba(61,220,255,.42);
  box-shadow:0 20px 48px rgba(0,0,0,.42);
}
.bento-item.wide{grid-column:span 2;background:var(--glass2);}
.bento-icon{
  width:44px;
  height:44px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-size:17px;
  color:var(--primary);
  background:rgba(61,220,255,.10);
  border:1px solid rgba(61,220,255,.24);
  margin-bottom:18px;
}
.bento-item.violet .bento-icon{color:#b7a5ff;background:rgba(124,92,255,.12);border-color:rgba(124,92,255,.28);}
.bento-item.orange .bento-icon{color:#ffb387;background:rgba(255,138,76,.12);border-color:rgba(255,138,76,.28);}
.bento-item.green .bento-icon{color:#7ff0bb;background:rgba(59,227,143,.12);border-color:rgba(59,227,143,.28);}
.bento-title{font-size:19px;font-weight:600;letter-spacing:.02em;}
.bento-text{margin-top:10px;font-size:15px;line-height:1.82;color:var(--muted);}
.bento-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.bento-list li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--muted);
}
.bento-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(61,220,255,.7);
}
/* ---------- tips ---------- */
.tips-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:28px;
  align-items:start;
}
.rank-list{display:flex;flex-direction:column;gap:12px;}
.rank-item{
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:18px 22px;
  border-radius:16px;
  background:var(--glass);
  border:1px solid var(--line);
  transition:.3s ease;
}
.rank-item:hover{
  border-color:rgba(61,220,255,.42);
  transform:translateX(4px);
  background:var(--glass2);
}
.rank-num{
  font-family:var(--num-font);
  font-size:18px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--primary);
  min-width:34px;
}
.rank-item h3{font-size:16.5px;font-weight:600;}
.rank-item p{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.75;}
.tip-card{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass2);
  box-shadow:var(--shadow);
}
.tip-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  opacity:.72;
}
.tip-card-body{
  position:absolute;
  inset:auto 0 0 0;
  padding:26px;
  background:linear-gradient(180deg,rgba(6,10,19,0),rgba(6,10,19,.94) 58%);
}
.tip-card-body h3{font-size:19px;font-weight:600;}
.tip-card-body p{margin-top:8px;font-size:14.5px;color:#C6D8E8;line-height:1.75;}
.tip-note{
  margin-top:20px;
  padding:18px 22px;
  border-radius:16px;
  background:rgba(61,220,255,.06);
  border:1px solid var(--line);
  border-left:3px solid var(--primary);
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
}
/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  border-left:3px solid rgba(61,220,255,.32);
  overflow:hidden;
  transition:border-color .3s ease,background .3s ease;
}
.faq-item.open{border-left-color:var(--primary);background:var(--glass2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.01em;
}
.faq-q:hover{color:#a9efff;}
.faq-icon{
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-size:12px;
  color:var(--primary);
  border:1px solid rgba(61,220,255,.36);
  transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:rgba(61,220,255,.14);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .34s ease;
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
/* ---------- cta band ---------- */
.cta-band{padding:0 0 96px;position:relative;z-index:2;}
.cta-inner{
  position:relative;
  overflow:hidden;
  padding:56px 48px;
  border-radius:24px;
  background:var(--glass2);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-inner::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(420px 240px at 8% 0%,rgba(61,220,255,.20),transparent 66%),
    radial-gradient(420px 240px at 92% 100%,rgba(124,92,255,.18),transparent 68%),
    repeating-linear-gradient(180deg,rgba(61,220,255,.05) 0 1px,transparent 1px 6px);
  pointer-events:none;
}
.cta-copy{position:relative;max-width:640px;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:.02em;}
.cta-copy p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.8;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.pulse{animation:pulseRing 2.8s ease-out infinite;}
@keyframes pulseRing{
  0%{box-shadow:0 0 0 0 rgba(61,220,255,.42),0 0 24px rgba(61,220,255,.28);}
  70%{box-shadow:0 0 0 16px rgba(61,220,255,0),0 0 24px rgba(61,220,255,.22);}
  100%{box-shadow:0 0 0 0 rgba(61,220,255,0),0 0 24px rgba(61,220,255,.28);}
}
/* ---------- footer ---------- */
.site-footer{
  position:relative;
  z-index:2;
  background:linear-gradient(180deg,rgba(8,14,26,.92),rgba(4,7,13,.98));
  border-top:1px solid var(--line);
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.25fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14.5px;color:var(--muted);line-height:1.85;max-width:340px;}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:14.5px;color:var(--muted);}
.footer-col ul a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact span{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}
.footer-contact i{color:var(--primary);margin-top:4px;}
.footer-bottom{
  border-top:1px solid rgba(110,200,255,.12);
  background:rgba(3,6,12,.75);
  padding:20px 0;
}
.footer-bottom .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--muted);
}
/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}
/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px;}
}
@media (max-width:991px){
  .site-header{height:64px;}
  .nav-toggle{display:grid;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    height:100vh;
    width:300px;
    max-width:86vw;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    padding:96px 26px 32px;
    margin-left:0;
    background:rgba(8,15,28,.97);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(104%);
    transition:transform .34s ease;
    z-index:90;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-link{
    width:100%;
    font-size:18px;
    padding:14px 0;
    border-bottom:1px solid rgba(110,200,255,.10);
    border-radius:0;
  }
  .nav-link::before{bottom:16px;left:0;}
  .nav-link.active{color:var(--primary);}
  .drawer-mask{
    display:block;
    position:fixed;
    inset:0;
    background:rgba(3,6,12,.62);
    opacity:0;
    visibility:hidden;
    transition:.3s ease;
    z-index:85;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:36px 0 56px;}
  .section{padding:64px 0;}
  .cta-band{padding-bottom:64px;}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr));}
  .bento-item.wide{grid-column:span 2;}
  .tips-grid{grid-template-columns:1fr;}
  .cta-inner{padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .header-side .btn-main{display:none;}
  .brand-text span{display:none;}
  .page-hero h1{font-size:31px;}
  .hero-sub{font-size:15.5px;}
  .bento{grid-template-columns:1fr;}
  .bento-item.wide{grid-column:span 1;}
  .tl-item{grid-template-columns:56px minmax(0,1fr);gap:16px;}
  .tl-item::before{left:27px;top:52px;}
  .tl-num{width:44px;height:44px;font-size:15px;}
  .tl-body{padding:18px 20px;}
  .section-head{margin-bottom:36px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:575px){
  .page-hero{padding:28px 0 44px;}
  .page-hero h1{font-size:30px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;min-height:50px;}
  .hero-stats li{flex:1 1 100%;}
  .section{padding:40px 0;}
  .cta-band{padding-bottom:40px;}
  .cta-inner{padding:28px 20px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;min-height:50px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a p{padding:0 18px 20px;}
  .rank-item{padding:16px 18px;gap:14px;}
  .footer-bottom .wrap{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg:#060A13;
  --bg-2:#0A1222;
  --glass:rgba(14,26,48,.68);
  --glass-strong:rgba(18,34,60,.80);
  --primary:#3DDCFF;
  --primary-deep:#1D8FFF;
  --violet:#7C5CFF;
  --accent:#FF8A4C;
  --success:#3BE38F;
  --danger:#FF5C7A;
  --text:#EAF6FF;
  --muted:#9CB2C8;
  --line:rgba(110,200,255,.18);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 18px 50px rgba(0,0,0,.42);
  --glow:0 0 0 1px rgba(61,220,255,.28),0 0 24px rgba(61,220,255,.28);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(61,220,255,.10), transparent 62%),
    radial-gradient(760px 460px at 96% 4%, rgba(124,92,255,.10), transparent 60%),
    linear-gradient(180deg,#060A13 0%,#070C17 55%,#060A13 100%);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(110,200,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(110,200,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#8CEBFF}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
.numi{font-family:var(--font-num);letter-spacing:.04em}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.55);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(7,12,23,.88);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--violet));
  color:#04121C;font-size:17px;
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;color:var(--text);font-weight:800;letter-spacing:.02em}
.brand-text span{font-family:var(--font-num);font-size:10px;color:var(--muted);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  border-radius:12px;color:var(--muted);font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(61,220,255,.08)}
.nav-link.active{color:var(--text)}
.nav-link.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--muted);cursor:pointer;
  transition:.2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(61,220,255,.45)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--glass);cursor:pointer;padding:11px 10px}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;margin:4px 0;transition:.25s ease}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-deep) 55%,var(--violet));
  color:#03121C;box-shadow:var(--glow);
}
.btn-primary:hover{color:#03121C;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(61,220,255,.42),0 0 32px rgba(61,220,255,.38)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,220,255,.3),0 0 14px rgba(61,220,255,.24)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{color:var(--primary);border-color:rgba(61,220,255,.5);background:rgba(61,220,255,.08);transform:translateY(-2px)}
.btn-link{color:var(--primary);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:8px 0}
.btn-link i{transition:transform .2s ease}
.btn-link:hover i{transform:translateX(4px)}

/* ===== drawer ===== */
.drawer-mask{position:fixed;inset:0;background:rgba(3,7,14,.66);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:70}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(330px,86vw);z-index:80;
  background:rgba(9,16,30,.96);backdrop-filter:blur(18px);
  border-left:1px solid var(--line);padding:24px;
  transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;gap:20px;
}
.drawer.open{transform:translateX(0)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{padding:14px 12px;border-radius:14px;color:var(--text);font-size:18px;font-weight:600;border:1px solid transparent}
.drawer-nav a:hover{background:rgba(61,220,255,.1);border-color:var(--line)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}

/* ===== breadcrumb ===== */
.crumb{
  padding:28px 0 8px;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.45}
.crumb .now{color:var(--primary)}

/* ===== article head ===== */
.article-hero{position:relative;padding:26px 0 40px}
.article-hero::after{
  content:"";position:absolute;right:-4%;top:-30%;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,220,255,.12),transparent 66%);pointer-events:none;
}
.article-hero .wrap{max-width:820px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.badge-chip{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);font-size:12.5px;color:var(--muted);letter-spacing:.03em;
}
.badge-chip.primary{color:var(--primary);border-color:rgba(61,220,255,.42)}
.badge-chip.accent{color:var(--accent);border-color:rgba(255,138,76,.42)}
h1.article-title{
  font-size:clamp(30px,4.2vw,50px);line-height:1.18;font-weight:800;letter-spacing:.02em;
}
h1.article-title .kw{
  background:linear-gradient(100deg,var(--primary),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.article-lead{margin-top:18px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:760px}
.meta-row{
  margin-top:24px;display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center;
  padding:16px 20px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow);
}
.meta-item{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.meta-item i{color:var(--primary)}
.meta-item b{color:var(--text);font-weight:600}
.hero-figure{
  margin-top:32px;border-radius:var(--r-card);overflow:hidden;position:relative;
  border:1px solid var(--line);box-shadow:var(--shadow);background:var(--bg-2);
}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(6,10,19,.72) 100%);
}
.fig-cap{
  position:absolute;left:18px;bottom:14px;z-index:2;font-size:12.5px;color:var(--text);
  background:rgba(6,10,19,.55);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 13px;
}

/* ===== article body ===== */
.read-area{padding:16px 0 72px}
.read-shell{border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);box-shadow:var(--shadow);padding:36px clamp(20px,4vw,48px)}
.prose{max-width:760px;margin:0 auto;font-size:15.5px;line-height:1.85;color:#DCEDFA}
.prose>*+*{margin-top:1.2em}
.prose h2{font-size:clamp(22px,2.4vw,30px);margin-top:40px;margin-bottom:20px;color:var(--text);position:relative;padding-left:16px}
.prose h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--violet))}
.prose h3{font-size:clamp(18px,2vw,22px);margin-top:28px;margin-bottom:14px;color:#E3F3FF}
.prose h4{font-size:16px;margin-top:22px;margin-bottom:10px;color:var(--primary)}
.prose p{margin-bottom:0}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:#9DF0FF}
.prose strong{color:#FFFFFF}
.prose ul,.prose ol{margin:16px 0;padding-left:4px}
.prose ul li{position:relative;padding-left:22px;margin:8px 0;color:#D2E6F7}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(61,220,255,.7);
}
.prose ol{counter-reset:item}
.prose ol li{position:relative;padding-left:34px;margin:10px 0;counter-increment:item;color:#D2E6F7}
.prose ol li::before{
  content:counter(item);position:absolute;left:0;top:.15em;width:22px;height:22px;border-radius:8px;
  display:grid;place-items:center;font-family:var(--font-num);font-size:12.5px;font-weight:700;
  color:var(--primary);border:1px solid rgba(61,220,255,.4);background:rgba(61,220,255,.08);
}
.prose blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--primary);
  background:var(--glass-strong);border-radius:0 14px 14px 0;color:#CFE6F8;
}
.prose blockquote p{margin:0}
.prose img{border-radius:14px;margin:22px 0;width:100%}
.prose figure{margin:22px 0}
.prose figcaption{text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px}
.prose code{
  font-family:var(--font-num);font-size:14px;background:rgba(61,220,255,.1);
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:#BFF2FF;
}
.prose pre{
  background:rgba(8,15,28,.9);border:1px solid var(--line);border-radius:14px;
  padding:18px;overflow-x:auto;font-size:13.5px;
}
.prose pre code{background:none;border:none;padding:0;color:#CFE6F8}
.prose table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:22px 0;font-size:14.5px;
}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.prose th{background:rgba(61,220,255,.08);color:var(--text);font-weight:600}
.prose hr{border:none;height:1px;background:var(--line);margin:32px 0}

/* ===== empty state ===== */
.empty-box{
  max-width:760px;margin:0 auto;text-align:center;padding:52px 20px;
}
.empty-box .ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--primary);font-size:24px;
}
.empty-box h2{font-size:22px;margin-bottom:10px}
.empty-box p{color:var(--muted);margin-bottom:22px}

/* ===== back & related ===== */
.back-row{padding:0 0 48px}
.back-shell{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow);
}
.back-shell p{color:var(--muted);font-size:14px}
.back-actions{display:flex;flex-wrap:wrap;gap:12px}
.related{padding:0 0 96px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px)}
.sec-head p{color:var(--muted);font-size:14px;margin-top:8px}
.sec-line{height:1px;flex:1;background:linear-gradient(90deg,var(--line),transparent)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(61,220,255,.45);box-shadow:0 22px 54px rgba(0,0,0,.5),0 0 22px rgba(61,220,255,.18)}
.rel-thumb{position:relative;overflow:hidden}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.02)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(6,10,19,.78))}
.rel-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body .tag{font-size:12px;color:var(--primary);letter-spacing:.03em}
.rel-body h3{font-size:17px;line-height:1.5;font-weight:600}
.rel-body h3 a{color:var(--text)}
.rel-body h3 a:hover{color:var(--primary)}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}

/* ===== cta strip ===== */
.cta-strip{padding:0 0 88px}
.cta-panel{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(14,26,48,.9),rgba(18,34,60,.72));
  box-shadow:var(--shadow);padding:clamp(28px,4vw,52px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-panel::before{
  content:"";position:absolute;right:-90px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,220,255,.18),transparent 68%);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);position:relative}
.cta-panel p{color:var(--muted);margin-top:10px;font-size:14.5px;position:relative}
.cta-panel .btn{position:relative}

/* ===== footer ===== */
.site-footer{position:relative;border-top:1px solid var(--line);background:rgba(5,9,17,.9);padding-top:64px;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:16px;max-width:320px;line-height:1.8}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--muted);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{color:var(--muted);font-size:13.5px;display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:var(--primary);margin-top:4px}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);background:rgba(4,7,14,.92)}
.footer-bottom .wrap{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding-top:20px;padding-bottom:20px;font-size:12.5px;color:var(--muted)}

/* ===== responsive ===== */
@media (max-width:1199.98px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:991.98px){
  .nav-links,.header-actions .btn{display:none}
  .nav-toggle{display:block}
  .header-inner{height:64px}
  .read-shell{padding:26px 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  .crumb{padding-top:20px}
  .article-hero{padding:18px 0 30px}
  .meta-row{padding:14px 16px;gap:10px 16px}
  .rel-grid{grid-template-columns:1fr}
  .related{padding-bottom:64px}
  .cta-strip{padding-bottom:56px}
  .back-shell{padding:18px 18px}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  .header-inner{height:58px}
  .brand-text b{font-size:14.5px}
  .brand-mark{width:34px;height:34px;font-size:15px}
  h1.article-title{font-size:30px;line-height:1.24}
  .read-shell{padding:20px 16px;border-radius:16px}
  .prose{font-size:15px}
  .prose h2{margin-top:32px;margin-bottom:16px}
  .back-actions{width:100%}
  .back-actions .btn{flex:1 1 100%}
  .cta-panel .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --bg:#060A13;
  --bg2:#0A1222;
  --glass:rgba(14,26,48,.68);
  --glass-strong:rgba(18,34,60,.80);
  --primary:#3DDCFF;
  --primary-deep:#1D8FFF;
  --violet:#7C5CFF;
  --accent:#FF8A4C;
  --success:#3BE38F;
  --danger:#FF5C7A;
  --text:#EAF6FF;
  --muted:#9CB2C8;
  --line:rgba(110,200,255,.18);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 18px 50px rgba(0,0,0,.42);
  --glow:0 0 0 1px rgba(61,220,255,.28), 0 0 24px rgba(61,220,255,.28);
  --num:"DIN Alternate","Bahnschrift",ui-sans-serif,system-ui,sans-serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:.02em;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

.page-bg{
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(61,220,255,.12), transparent 62%),
    radial-gradient(760px 460px at 92% 8%, rgba(124,92,255,.11), transparent 60%),
    radial-gradient(680px 420px at 50% 108%, rgba(255,138,76,.07), transparent 62%),
    linear-gradient(180deg,#060A13 0%,#0A1222 52%,#060A13 100%);
}
.page-grid{
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(110,200,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110,200,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%, #000 12%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 12%, transparent 78%);
}

.wrap{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ HEADER ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(6,10,19,.84);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:36px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(61,220,255,.22),rgba(124,92,255,.28));
  border:1px solid rgba(61,220,255,.34);
  color:var(--primary);
  font-size:17px;
  box-shadow:0 0 18px rgba(61,220,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.02em;}
.brand-text span{
  font-family:var(--num);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--muted);
  text-transform:uppercase;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  border-radius:10px;
  transition:color .25s ease,background .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(61,220,255,.07);}
.nav-link.active{color:var(--text);}
.nav-link.active::before{
  content:"";
  position:absolute;
  left:14px;top:50%;
  transform:translate(-9px,-50%);
  width:5px;height:5px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px var(--primary);
}
.nav-link.active{padding-left:20px;}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
  margin-left:auto;
}
.icon-btn{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:rgba(14,26,48,.6);
  border:1px solid var(--line);
  color:var(--muted);
  cursor:pointer;
  transition:.25s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(61,220,255,.45);box-shadow:0 0 18px rgba(61,220,255,.2);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  background:rgba(14,26,48,.6);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
  font-size:17px;
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  color:#04121C;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep) 52%,var(--violet));
  box-shadow:0 0 0 1px rgba(61,220,255,.28),0 0 24px rgba(61,220,255,.24);
}
.btn-primary:hover{
  color:#04121C;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(61,220,255,.45),0 0 32px rgba(61,220,255,.4);
  filter:brightness(1.08);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(61,220,255,.3),0 0 14px rgba(61,220,255,.22);}
.btn-ghost{
  color:var(--text);
  background:rgba(14,26,48,.6);
  border-color:var(--line);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:rgba(61,220,255,.5);
  background:rgba(61,220,255,.1);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  background:none;
  border:none;
  padding:0;
  cursor:pointer;
}
.btn-link i{transition:transform .25s ease;}
.btn-link:hover i{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px;}

/* drawer */
.nav-drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:84%;
  max-width:340px;
  z-index:1200;
  padding:92px 26px 32px;
  background:rgba(10,18,34,.97);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  transform:translateX(105%);
  transition:transform .38s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.nav-drawer.open{transform:translateX(0);}
.nav-drawer a.drawer-link{
  display:block;
  padding:14px 4px;
  font-size:18px;
  font-weight:600;
  color:var(--muted);
  border-bottom:1px solid rgba(110,200,255,.1);
}
.nav-drawer a.drawer-link.active,.nav-drawer a.drawer-link:hover{color:var(--primary);}
.drawer-close{
  position:absolute;
  top:24px;right:22px;
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:rgba(14,26,48,.7);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}
.drawer-cta{margin-top:22px;}
.drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:1100;
  background:rgba(3,6,12,.66);
  opacity:0;
  visibility:hidden;
  transition:.3s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ============ HERO ============ */
.page-hero{
  position:relative;
  padding:150px 0 96px;
  overflow:hidden;
}
.hero-bgimg{
  position:absolute;
  inset:0;
  z-index:0;
}
.hero-bgimg img{
  width:100%;height:100%;
  object-fit:cover;
  opacity:.34;
}
.hero-bgimg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(6,10,19,.96) 8%,rgba(6,10,19,.78) 46%,rgba(10,18,34,.62) 100%);
}
.hero-inner{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:7px 16px;
  border-radius:var(--r-pill);
  background:rgba(61,220,255,.1);
  border:1px solid rgba(61,220,255,.3);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
}
.eyebrow i{font-size:11px;}
.hero-title{
  font-size:clamp(30px,4vw,52px);
  line-height:1.15;
  font-weight:800;
  margin:22px 0 18px;
}
.hero-title .hl{
  background:linear-gradient(100deg,var(--primary),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  color:var(--muted);
  font-size:16px;
  line-height:1.8;
  max-width:560px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
}
.stat-pill{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:10px 16px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.stat-pill b{
  font-family:var(--num);
  font-size:16px;
  color:var(--primary);
  letter-spacing:.04em;
}

.hero-visual{position:relative;z-index:1;}
.kv-frame{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(61,220,255,.28);
  background:var(--glass-strong);
  box-shadow:var(--shadow),0 0 40px rgba(61,220,255,.12);
}
.kv-frame img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  opacity:.82;
}
.kv-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,19,.1) 0%,rgba(6,10,19,.72) 100%);
}
.kv-caption{
  position:absolute;
  left:22px;right:22px;bottom:20px;
  z-index:2;
}
.kv-caption h3{font-size:17px;font-weight:700;}
.kv-caption p{font-size:12.5px;color:var(--muted);margin-top:4px;}

.float-card{
  position:absolute;
  display:flex;
  align-items:center;
  gap:11px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(12,22,40,.9);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  box-shadow:0 14px 36px rgba(0,0,0,.45);
  font-size:12.5px;
  color:var(--muted);
}
.float-card b{color:var(--text);font-size:13px;display:block;}
.float-card i{color:var(--success);font-size:15px;}
.float-card.fc-a{top:18px;left:-14px;}
.float-card.fc-b{bottom:34px;right:-10px;}

.ring{
  width:52px;height:52px;
  border-radius:50%;
  display:grid;place-items:center;
  background:conic-gradient(var(--primary) 0 78%, rgba(110,200,255,.14) 78% 100%);
  position:relative;
  flex-shrink:0;
}
.ring::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:50%;
  background:#0A1222;
}
.ring span{
  position:relative;
  z-index:1;
  font-family:var(--num);
  font-size:12px;
  color:var(--primary);
  letter-spacing:.02em;
}

/* ============ SECTIONS ============ */
section{padding:96px 0;}
.sec-head{max-width:660px;margin-bottom:48px;}
.sec-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  font-weight:600;
  color:var(--primary);
  text-transform:uppercase;
  font-family:var(--num);
}
.sec-tag::before{
  content:"";
  width:22px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.sec-title{
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.25;
  font-weight:700;
  margin:14px 0 14px;
}
.sec-desc{color:var(--muted);font-size:15px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head.center .sec-tag::before{display:none;}

.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
}

/* ============ 阶梯卡 ============ */
.tier-track{
  display:flex;
  gap:22px;
  overflow-x:auto;
  padding:6px 4px 24px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.tier-track::-webkit-scrollbar{height:6px;}
.tier-track::-webkit-scrollbar-track{background:rgba(110,200,255,.07);border-radius:99px;}
.tier-track::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--primary),var(--violet));border-radius:99px;}
.tier-card{
  flex:0 0 296px;
  scroll-snap-align:start;
  padding:24px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.tier-card:hover{
  transform:translateY(-4px);
  border-color:rgba(61,220,255,.5);
  box-shadow:0 22px 54px rgba(0,0,0,.5),0 0 28px rgba(61,220,255,.18);
}
.tier-card.hi{border-color:rgba(255,138,76,.42);}
.tier-card.hi .tier-badge{background:rgba(255,138,76,.14);border-color:rgba(255,138,76,.4);color:var(--accent);}
.tier-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.tier-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:rgba(61,220,255,.12);
  border:1px solid rgba(61,220,255,.32);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.tier-index{
  font-family:var(--num);
  font-size:13px;
  color:var(--muted);
  letter-spacing:.1em;
}
.tier-card h3{font-size:19px;font-weight:600;}
.tier-card p{font-size:13.5px;color:var(--muted);line-height:1.7;}
.tier-req{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:2px;
}
.tier-req li{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:13px;
  color:var(--muted);
}
.tier-req li i{color:var(--primary);font-size:11px;margin-top:6px;}
.bar{
  height:9px;
  border-radius:99px;
  background:rgba(110,200,255,.1);
  overflow:hidden;
  position:relative;
}
.bar i{
  display:block;
  height:100%;
  border-radius:99px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  box-shadow:0 0 14px rgba(61,220,255,.55);
}
.bar-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--num);
  font-size:12px;
  color:var(--muted);
  margin-bottom:8px;
  letter-spacing:.04em;
}
.bar-meta b{color:var(--primary);}

/* ============ 任务进度 ============ */
.task-panel{
  padding:34px;
  border-radius:22px;
  background:linear-gradient(140deg,rgba(14,26,48,.86),rgba(10,18,34,.72));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.task-top{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:26px;
}
.task-top h3{font-size:22px;font-weight:700;}
.task-top p{font-size:13.5px;color:var(--muted);margin-top:6px;}
.task-pct{
  font-family:var(--num);
  font-size:40px;
  font-weight:700;
  line-height:1;
  background:linear-gradient(100deg,var(--primary),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  letter-spacing:.03em;
}
.track{
  position:relative;
  height:10px;
  border-radius:99px;
  background:rgba(110,200,255,.1);
  margin:8px 0 10px;
}
.track i{
  position:absolute;
  left:0;top:0;bottom:0;
  width:68%;
  border-radius:99px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  box-shadow:0 0 18px rgba(61,220,255,.55);
}
.track i::after{
  content:"";
  position:absolute;
  right:-4px;top:50%;
  transform:translateY(-50%);
  width:14px;height:14px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 16px var(--primary);
}
.nodes{
  display:flex;
  justify-content:space-between;
  font-family:var(--num);
  font-size:12px;
  color:var(--muted);
  letter-spacing:.06em;
  margin-bottom:30px;
}
.nodes span.done{color:var(--success);}
.task-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
.task-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(12,22,40,.62);
  border:1px solid var(--line);
  transition:.26s ease;
}
.task-item:hover{border-color:rgba(61,220,255,.42);background:rgba(18,34,60,.74);}
.task-check{
  width:26px;height:26px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:11px;
  flex-shrink:0;
}
.task-check.on{
  background:rgba(59,227,143,.16);
  border:1px solid rgba(59,227,143,.5);
  color:var(--success);
}
.task-check.off{
  background:transparent;
  border:1px solid rgba(110,200,255,.35);
  color:transparent;
}
.task-item div b{display:block;font-size:14.5px;font-weight:600;}
.task-item div span{font-size:12.5px;color:var(--muted);}

/* ============ 领取说明 ============ */
.steps{padding-left:2px;}
.steps li{
  display:flex;
  gap:18px;
  padding:20px 0;
  border-bottom:1px dashed rgba(110,200,255,.14);
}
.steps li:last-child{border-bottom:none;}
.step-no{
  flex-shrink:0;
  width:38px;height:38px;
  border-radius:12px;
  display:grid;place-items:center;
  font-family:var(--num);
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  background:rgba(61,220,255,.1);
  border:1px solid rgba(61,220,255,.3);
}
.steps h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.steps p{font-size:13.5px;color:var(--muted);}
.note-card{
  padding:26px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  height:100%;
}
.note-card h3{font-size:17px;font-weight:600;margin-bottom:14px;}
.note-card ul li{
  display:flex;
  gap:10px;
  font-size:13.5px;
  color:var(--muted);
  padding:9px 0;
  border-bottom:1px solid rgba(110,200,255,.08);
}
.note-card ul li:last-child{border-bottom:none;}
.note-card ul li i{color:var(--accent);font-size:12px;margin-top:6px;}
.cover-img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  transition:transform .35s ease;
}
.cover-img:hover{transform:scale(1.02);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  border-left:3px solid rgba(61,220,255,.4);
  overflow:hidden;
  transition:.26s ease;
}
.faq-item.open{border-left-color:var(--primary);box-shadow:0 0 0 1px rgba(61,220,255,.2),0 14px 40px rgba(0,0,0,.4);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:19px 22px;
  background:none;
  border:none;
  color:var(--text);
  font-size:15.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
}
.faq-q i{color:var(--primary);font-size:13px;transition:transform .28s ease;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease,padding .35s ease;
  padding:0 22px;
}
.faq-item.open .faq-a{max-height:340px;padding:0 22px 20px;}
.faq-a p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:52px 44px;
  border-radius:24px;
  background:linear-gradient(120deg,rgba(18,34,60,.92),rgba(10,18,34,.86));
  border:1px solid rgba(61,220,255,.26);
  box-shadow:var(--shadow);
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:-140px;left:50%;
  transform:translateX(-50%);
  width:520px;height:320px;
  background:radial-gradient(circle,rgba(61,220,255,.2),transparent 66%);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(61,220,255,.05) 0 1px,transparent 1px 6px);
  opacity:.5;
  pointer-events:none;
}
.cta-band h2{
  position:relative;
  z-index:1;
  font-size:clamp(22px,2.4vw,32px);
  font-weight:700;
}
.cta-band p{
  position:relative;
  z-index:1;
  color:var(--muted);
  font-size:14.5px;
  margin:14px auto 26px;
  max-width:520px;
}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
}
.pulse{animation:pulse 2.6s ease-in-out infinite;}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 1px rgba(61,220,255,.28),0 0 22px rgba(61,220,255,.24);}
  50%{box-shadow:0 0 0 1px rgba(61,220,255,.5),0 0 34px rgba(61,220,255,.44);}
}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,10,19,.6),rgba(4,7,13,.96));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:44px;
  padding:64px 0 48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:13.5px;color:var(--muted);max-width:320px;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:13.5px;color:var(--muted);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact span{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  line-height:1.6;
}
.footer-contact i{color:var(--primary);font-size:12px;margin-top:5px;}
.footer-bottom{
  border-top:1px solid rgba(110,200,255,.12);
  background:rgba(3,6,12,.8);
}
.footer-bottom .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding-top:20px;
  padding-bottom:20px;
  font-size:12.5px;
  color:var(--muted);
}

/* ============ RESPONSIVE ============ */
@media (max-width:1199.98px){
  .nav-link{padding:0 10px;font-size:13.5px;}
  .header-inner{gap:20px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1.2fr;gap:34px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .header-actions .btn-primary{display:none;}
  .page-hero{padding:126px 0 72px;}
  section{padding:68px 0;}
  .hero-visual{margin-top:46px;}
  .float-card.fc-a{left:8px;}
  .float-card.fc-b{right:8px;}
  .task-list{grid-template-columns:1fr;}
  .task-panel{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:48px 0 36px;}
  .cta-band{padding:40px 24px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px;}
  .header-inner{height:62px;}
  .brand-text b{font-size:13.5px;}
  .brand-text span{font-size:9px;}
  .page-hero{padding:112px 0 56px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:10px;}
  .stat-pill{padding:8px 13px;font-size:12.5px;}
  .tier-card{flex:0 0 84%;}
  .nodes{font-size:10.5px;letter-spacing:.02em;}
  .task-pct{font-size:32px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom .wrap{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .site-header .header-inner{height:58px;}
  .hero-title{font-size:30px;}
  .sec-title{font-size:24px;}
  section{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .cta-actions .btn{width:100%;}
  .steps li{gap:14px;}
  .float-card{padding:10px 13px;font-size:11.5px;}
  .ring{width:44px;height:44px;}
}

/* roulang page: category3 */
:root{
  --bg:#060A13;
  --bg-2:#0A1222;
  --bg-3:#050810;
  --glass:rgba(14,26,48,.68);
  --glass-2:rgba(18,34,60,.80);
  --primary:#3DDCFF;
  --primary-deep:#1D8FFF;
  --violet:#7C5CFF;
  --accent:#FF8A4C;
  --success:#3BE38F;
  --danger:#FF5C7A;
  --text:#EAF6FF;
  --muted:#9CB2C8;
  --line:rgba(110,200,255,.18);
  --line-strong:rgba(110,200,255,.34);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 18px 50px rgba(0,0,0,.42);
  --shadow-soft:0 10px 28px rgba(0,0,0,.32);
  --glow:0 0 0 1px rgba(61,220,255,.28),0 0 24px rgba(61,220,255,.28);
  --glow-strong:0 0 0 1px rgba(61,220,255,.42),0 0 32px rgba(61,220,255,.36);
  --ease:cubic-bezier(.4,.14,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:15px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(110,200,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(110,200,255,.05) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 420px at 12% -6%,rgba(61,220,255,.12),transparent 62%),
    radial-gradient(680px 380px at 92% 8%,rgba(124,92,255,.12),transparent 60%);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#7FE9FF;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}

.wrap{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
.section{padding:96px 0;position:relative;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--primary);
  background:rgba(61,220,255,.08);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:16px;
}
h2{font-size:34px;line-height:1.25;}
.section-head p{color:var(--muted);margin-top:14px;font-size:15px;}
.text-muted{color:var(--muted);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,10,19,.72);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,19,.9);
  border-bottom-color:var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:70px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--text);
  flex-shrink:0;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(61,220,255,.24),rgba(124,92,255,.28));
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:16px;
  box-shadow:0 0 18px rgba(61,220,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:15px;font-weight:800;letter-spacing:.02em;}
.brand-text span{font-size:10px;letter-spacing:.22em;color:var(--muted);}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  border-radius:var(--r-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(61,220,255,.07);}
.nav-link.active{color:var(--text);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;bottom:8px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(61,220,255,.9);
}
.nav-link.active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:2px;height:16px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.icon-btn{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--muted);
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);background:var(--glass-2);}
.menu-toggle{display:none;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,7,14,.68);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  background:rgba(10,18,34,.96);
  border-left:1px solid var(--line);
  backdrop-filter:blur(18px);
  z-index:95;
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateX(100%);
  transition:transform .34s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-link{
  display:block;
  padding:14px 4px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid rgba(110,200,255,.12);
}
.drawer-link.active{color:var(--primary);}
.drawer-cta{margin-top:auto;padding-top:24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(6,10,19,.9),0 0 0 4px var(--primary);}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--violet));
  color:#04121C;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04121C;
  transform:translateY(-2px);
  box-shadow:var(--glow-strong);
  filter:brightness(1.08);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(61,220,255,.28),0 0 12px rgba(61,220,255,.24);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--text);
  background:rgba(61,220,255,.1);
  border-color:var(--primary);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 0;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  background:none;border:0;
}
.btn-link i{transition:transform .22s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px;}
.btn-block{width:100%;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:calc(70px + 64px) 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.32;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg,rgba(6,10,19,.72) 0%,rgba(6,10,19,.9) 58%,var(--bg) 100%),
    linear-gradient(90deg,rgba(6,10,19,.92) 0%,rgba(6,10,19,.42) 62%,rgba(6,10,19,.72) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--primary);}
.page-hero h1{
  font-size:48px;
  font-weight:800;
  line-height:1.15;
  margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.page-hero .lead{
  font-size:16px;
  color:#C7DCEE;
  max-width:620px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  font-size:12.5px;
  color:var(--muted);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
}
.chip i{color:var(--primary);font-size:12px;}
.chip b{color:var(--text);font-weight:700;font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.04em;}

/* 页头右侧状态面板 */
.status-panel{
  background:var(--glass-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.status-panel h3{font-size:16px;margin-bottom:6px;}
.status-panel .panel-sub{font-size:12.5px;color:var(--muted);margin-bottom:18px;}
.status-item{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;
  border-top:1px dashed rgba(110,200,255,.16);
  font-size:13.5px;
}
.status-item:first-of-type{border-top:0;}
.status-item i{
  width:32px;height:32px;flex:0 0 32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(61,220,255,.1);
  border:1px solid var(--line);
  color:var(--primary);
  font-size:12.5px;
}
.status-item span{flex:1;color:#CFE2F2;}
.status-item b{font-family:"DIN Alternate","Bahnschrift",sans-serif;color:var(--success);font-size:12.5px;letter-spacing:.04em;}

/* ============ 入口卡片 ============ */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.entry-card{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) 168px;
  gap:20px;
  align-items:center;
  padding:26px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.entry-card::before{
  content:"";
  position:absolute;left:0;top:22px;bottom:22px;
  width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.entry-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(61,220,255,.24),0 22px 54px rgba(0,0,0,.46);
}
.entry-card .tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(61,220,255,.1);
  border:1px solid var(--line);
  color:var(--primary);
  margin-bottom:14px;
}
.entry-card h3{font-size:21px;margin-bottom:10px;}
.entry-card p{font-size:14px;color:var(--muted);margin-bottom:16px;}
.entry-card .meta-line{
  display:flex;flex-wrap:wrap;gap:14px;
  font-size:12.5px;color:var(--muted);
  margin-bottom:18px;
}
.entry-card .meta-line span{display:inline-flex;align-items:center;gap:6px;}
.entry-card .meta-line i{color:var(--primary);font-size:12px;}
.entry-thumb{
  width:168px;height:112px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.entry-card:hover .entry-thumb img{transform:scale(1.05);}
.entry-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,19,0) 45%,rgba(6,10,19,.62) 100%);
}

/* ============ 三步步骤条 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
  position:relative;
  counter-reset:step;
}
.steps::before{
  content:"";
  position:absolute;
  top:38px;left:8%;right:8%;
  height:1px;
  background:linear-gradient(90deg,rgba(61,220,255,.05),rgba(61,220,255,.5),rgba(124,92,255,.5),rgba(124,92,255,.05));
  z-index:0;
}
.step{
  position:relative;
  z-index:1;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px 26px;
  box-shadow:var(--shadow-soft);
  transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.step-num{
  display:inline-grid;place-items:center;
  width:76px;height:76px;
  border-radius:22px;
  font-family:"DIN Alternate","Bahnschrift",sans-serif;
  font-size:30px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--primary);
  background:linear-gradient(150deg,rgba(61,220,255,.16),rgba(124,92,255,.14));
  border:1px solid var(--line-strong);
  box-shadow:0 0 24px rgba(61,220,255,.18);
  margin-bottom:20px;
}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{font-size:14px;color:var(--muted);margin-bottom:14px;}
.step ul{display:grid;gap:8px;}
.step ul li{
  position:relative;
  padding-left:18px;
  font-size:13.5px;
  color:#C4D8EA;
}
.step ul li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(61,220,255,.7);
}

/* ============ 支持表单 / 联系信息 ============ */
.support-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:28px;
  align-items:start;
}
.panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:30px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.panel h3{font-size:20px;margin-bottom:8px;}
.panel .panel-desc{font-size:13.5px;color:var(--muted);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:13px;
  color:#C4D8EA;
  margin-bottom:8px;
  letter-spacing:.02em;
}
.field label .req{color:var(--accent);margin-left:4px;}
.field .form-control,
.field .form-select{
  width:100%;
  min-height:48px;
  padding:12px 16px;
  background:rgba(6,12,24,.72);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--text);
  font-size:14px;
  font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea.form-control{min-height:118px;resize:vertical;line-height:1.7;}
.field .form-control::placeholder{color:rgba(156,178,200,.62);}
.field .form-control:focus,
.field .form-select:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(8,16,30,.86);
  box-shadow:0 0 0 3px rgba(61,220,255,.16);
}
.field .form-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) 21px,calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field .form-select option{background:#0A1222;color:var(--text);}
.field .hint{font-size:12px;color:var(--muted);margin-top:8px;}
.field.is-error .form-control,
.field.is-error .form-select{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,92,122,.14);}
.field .err-msg{display:none;font-size:12px;color:var(--danger);margin-top:8px;}
.field.is-error .err-msg{display:block;}
.field.is-ok .form-control,
.field.is-ok .form-select{border-color:var(--success);}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px;}
.form-note{font-size:12px;color:var(--muted);margin-top:16px;line-height:1.7;}
.form-success{
  display:none;
  margin-top:18px;
  padding:14px 16px;
  border-radius:var(--r-sm);
  border:1px solid rgba(59,227,143,.4);
  background:rgba(59,227,143,.1);
  font-size:13px;
  color:#B7F5D6;
}
.form-success.show{display:block;}

.contact-list{display:grid;gap:16px;}
.contact-item{
  display:flex;gap:14px;
  padding:18px;
  border-radius:var(--r-md);
  background:rgba(6,14,28,.6);
  border:1px solid var(--line);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.contact-item:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.contact-item .ci-icon{
  width:42px;height:42px;flex:0 0 42px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(61,220,255,.18),rgba(124,92,255,.18));
  border:1px solid var(--line);
  color:var(--primary);
  font-size:15px;
}
.contact-item h4{font-size:14.5px;margin-bottom:5px;}
.contact-item p{font-size:13px;color:var(--muted);}
.contact-item .num{font-family:"DIN Alternate","Bahnschrift",sans-serif;letter-spacing:.04em;color:var(--text);}

.notice-strip{
  margin-top:24px;
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:linear-gradient(120deg,rgba(255,138,76,.1),rgba(61,220,255,.06));
  border:1px solid rgba(255,138,76,.28);
  font-size:13px;
  color:#F3DCC9;
}
.notice-strip i{color:var(--accent);margin-top:3px;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px;margin:0 auto;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  position:relative;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.faq-item::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
  opacity:.55;
}
.faq-item.open{border-color:var(--line-strong);background:var(--glass-2);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  background:none;border:0;
  color:var(--text);
  font-size:15.5px;font-weight:600;
  text-align:left;
  cursor:pointer;
}
.faq-q:hover{color:var(--primary);}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-3px;}
.faq-icon{
  flex:0 0 28px;
  width:28px;height:28px;
  display:grid;place-items:center;
  border-radius:8px;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:12px;
  transition:transform .28s var(--ease),background .25s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(61,220,255,.14);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px 24px;
  font-size:14px;
  color:var(--muted);
  line-height:1.78;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  border-radius:22px;
  padding:48px 44px;
  background:
    radial-gradient(560px 220px at 14% 0%,rgba(61,220,255,.16),transparent 62%),
    radial-gradient(520px 240px at 92% 100%,rgba(124,92,255,.18),transparent 62%),
    linear-gradient(130deg,rgba(18,34,60,.92),rgba(10,20,38,.94));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 6px);
  opacity:.35;
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;
  gap:28px;
}
.cta-inner h2{font-size:30px;margin-bottom:10px;}
.cta-inner p{font-size:14px;color:var(--muted);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.pulse{position:relative;}
.pulse::after{
  content:"";
  position:absolute;inset:-6px;
  border-radius:inherit;
  border:1px solid rgba(61,220,255,.42);
  animation:pulseRing 2.6s var(--ease) infinite;
  pointer-events:none;
}
@keyframes pulseRing{
  0%{opacity:.7;transform:scale(.96);}
  70%{opacity:0;transform:scale(1.06);}
  100%{opacity:0;transform:scale(1.06);}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:24px;
  background:linear-gradient(180deg,rgba(6,10,19,0),rgba(4,7,14,.92) 40%,var(--bg-3));
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:13.5px;color:var(--muted);max-width:340px;}
.footer-col h4{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col ul a{font-size:14px;color:#C4D8EA;}
.footer-col ul a:hover{color:var(--primary);}
.footer-contact{display:grid;gap:12px;font-size:13.5px;color:var(--muted);}
.footer-contact span{display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--primary);margin-top:4px;font-size:12.5px;}
.footer-bottom{
  border-top:1px solid rgba(110,200,255,.12);
  background:rgba(4,7,14,.86);
  padding:20px 0;
}
.footer-bottom .wrap{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--muted);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-links{display:none;}
  .menu-toggle{display:grid;}
  .header-actions .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:42px;}
  .status-panel{max-width:620px;}
}
@media (max-width:991.98px){
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:calc(70px + 48px) 0 56px;}
  .page-hero h1{font-size:38px;}
  h2{font-size:28px;}
  .entry-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:20px;}
  .steps::before{display:none;}
  .step{display:grid;grid-template-columns:76px minmax(0,1fr);gap:0 20px;align-items:start;}
  .step-num{margin-bottom:0;grid-row:span 3;}
  .support-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px;}
  .page-hero h1{font-size:32px;}
  .page-hero .lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .entry-card{grid-template-columns:1fr;}
  .entry-thumb{width:100%;height:160px;}
  .form-grid{grid-template-columns:1fr;}
  .panel{padding:22px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-inner h2{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom .wrap{flex-direction:column;}
}
@media (max-width:575.98px){
  .header-inner{min-height:60px;gap:12px;}
  .brand-text b{font-size:13.5px;}
  .page-hero{padding:calc(60px + 40px) 0 44px;}
  .page-hero h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
  .step{grid-template-columns:1fr;}
  .step-num{width:60px;height:60px;font-size:24px;border-radius:18px;margin-bottom:16px;}
  .chip{font-size:12px;}
  .status-panel{padding:20px;}
}