/* roulang page: index */
:root{
  --bg-base:#05080F;
  --bg-deep:#0A1120;
  --panel:rgba(255,255,255,0.05);
  --panel-strong:rgba(255,255,255,0.08);
  --line:rgba(255,255,255,0.10);
  --line-glow:rgba(0,229,255,0.35);
  --primary:#00E5FF;
  --primary-600:#00B8D4;
  --accent:#7A5CFF;
  --cta:#FFC53D;
  --cta-hover:#FFD666;
  --danger:#FF4D6D;
  --text-hi:#EAF6FF;
  --text-mid:#A9BBD1;
  --text-low:#6C7E96;
  --ok:#2BE5A0;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-mid);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3{color:var(--text-hi);font-weight:700;}
h1{font-size:clamp(1.75rem,4vw,3.5rem);line-height:1.15;letter-spacing:0;}
h2{font-size:1.75rem;line-height:1.35;}
h3{font-size:1.125rem;line-height:1.5;font-weight:600;}
.num{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}

/* 玻璃面板 */
.glass{
  background:var(--panel);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}
.glass-lg{border-radius:var(--radius-lg);}

/* 网格纹理与光斑 */
.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
}
.spot-cyan{
  position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,255,.18),transparent 68%);
  filter:blur(10px);pointer-events:none;
  animation:drift 18s ease-in-out infinite alternate;
}
.spot-violet{
  position:absolute;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.16),transparent 68%);
  filter:blur(10px);pointer-events:none;
  animation:drift 22s ease-in-out infinite alternate-reverse;
}
@keyframes drift{from{transform:translate3d(0,0,0);}to{transform:translate3d(32px,-26px,0);}}
.glow-line{height:1px;background:linear-gradient(90deg,transparent,var(--line-glow),transparent);border:0;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#00E5FF 0%,#7A5CFF 100%);
  color:#04121A;
  box-shadow:0 0 24px -6px rgba(0,229,255,.55),inset 0 0 0 1px rgba(0,229,255,.6);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 36px -6px rgba(0,229,255,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -6px rgba(0,229,255,.45);}
.btn-accent{
  background:var(--cta);color:#241A00;
  box-shadow:0 0 22px -8px rgba(255,197,61,.7);
}
.btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px);}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(0,229,255,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;filter:none;box-shadow:none;}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}

/* 文字链 */
.link-cyan{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;transition:color .2s;}
.link-cyan:hover{font-weight:600;color:#7DF0FF;}

/* 芯片 / 徽章 */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);background:var(--panel);
  font-size:.75rem;line-height:1.4;letter-spacing:.08em;color:var(--text-mid);
}
.chip-cyan{border-color:rgba(0,229,255,.35);color:#9BEEFF;background:rgba(0,229,255,.08);}
.chip-gold{border-color:rgba(255,197,61,.4);color:#FFE09B;background:rgba(255,197,61,.08);}

/* 卡片 */
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:20px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  position:relative;overflow:hidden;
}
@media(min-width:768px){.card{padding:24px;}}
.card:hover{transform:translateY(-4px);border-color:var(--line-glow);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
.icon-badge{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,229,255,.10);border:1px solid rgba(0,229,255,.28);color:var(--primary);
  flex:none;
}

/* 导航 */
.topbar{background:var(--bg-deep);border-bottom:1px solid rgba(255,255,255,.08);height:40px;font-size:.8125rem;}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.55);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease-out,border-color .25s ease-out;
}
.site-header.scrolled{background:rgba(5,8,15,.92);border-bottom-color:rgba(0,229,255,.35);}
.nav-link{
  position:relative;padding:8px 2px;font-size:.9375rem;color:var(--text-mid);transition:color .2s;
}
.nav-link:hover{color:var(--text-hi);}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text-hi);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,360px);z-index:90;
  background:rgba(10,17,32,.96);
  backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .28s ease-out;
  padding:24px 20px;
  display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(2,5,10,.66);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .25s ease-out,visibility .25s ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-link{font-size:1.25rem;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.08);color:var(--text-hi);font-weight:600;}

/* 倒计时 */
.count-block{
  min-width:64px;padding:6px 10px;border-radius:8px;
  background:var(--panel-strong);border:1px solid var(--line);
  text-align:center;
}
.countdown.live .count-block{border-color:rgba(0,229,255,.28);box-shadow:0 0 18px -10px rgba(0,229,255,.6);}
.countdown.done .count-block{border-color:var(--line);box-shadow:none;}
.countdown.done .count-num{color:var(--text-low);}
.count-num{font-size:1.375rem;line-height:1.2;color:var(--text-hi);}
.count-label{font-size:.6875rem;letter-spacing:.08em;color:var(--text-low);}

/* 图墙 */
.masonry{columns:2;column-gap:20px;}
@media(min-width:1024px){.masonry{columns:3;}}
.masonry-item{break-inside:avoid;margin-bottom:20px;position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);}
.masonry-item img{transition:transform .35s ease-out;}
.masonry-item:hover img{transform:scale(1.03);}
.masonry-item:hover{border-color:var(--line-glow);}
.masonry-cap{
  position:absolute;left:0;right:0;bottom:0;padding:16px;
  background:linear-gradient(to top,rgba(4,8,16,.92),rgba(4,8,16,0));
  display:flex;align-items:flex-end;justify-content:space-between;gap:10px;
}
.masonry-item .masonry-cap{transform:translateY(6px);opacity:.92;transition:transform .3s ease-out,opacity .3s ease-out;}
.masonry-item:hover .masonry-cap{transform:translateY(0);opacity:1;}

/* 表单 */
.field{
  width:100%;height:48px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  padding:0 14px;color:var(--text-hi);transition:border-color .2s,box-shadow .2s;
}
.field::placeholder{color:var(--text-low);}
.field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,229,255,.16);}
select.field{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236C7E96' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;}
.req-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--danger);vertical-align:middle;margin-left:6px;}

/* FAQ */
.faq-item{border-bottom:1px solid rgba(255,255,255,.08);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;padding:20px 0;cursor:pointer;
}
.faq-q h3{font-size:1.0625rem;transition:color .2s;}
.faq-q:hover h3{color:var(--primary);}
.faq-plus{
  width:32px;height:32px;flex:none;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .24s ease-out,border-color .2s,background-color .2s;
}
.faq-item.open .faq-plus{transform:rotate(45deg);border-color:var(--line-glow);background:rgba(0,229,255,.08);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a-inner{padding:0 0 22px;color:var(--text-mid);}

/* 内容列表截断 */
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.08);}
.footer-link{color:var(--text-mid);font-size:.9375rem;transition:color .2s,padding-left .2s;}
.footer-link:hover{color:var(--primary);padding-left:4px;}
.to-top{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-hi);
  background:var(--panel);transition:border-color .2s,transform .2s,background-color .2s;
}
.to-top:hover{border-color:var(--line-glow);transform:translateY(-3px);background:rgba(0,229,255,.08);}

::selection{background:rgba(0,229,255,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:10px;}
::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,.55);}

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

/* roulang page: article */
:root{
  --bg-base:#05080F;
  --bg-deep:#0A1120;
  --panel:rgba(255,255,255,.05);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --line-glow:rgba(0,229,255,.35);
  --primary:#00E5FF;
  --primary-600:#00B8D4;
  --accent:#7A5CFF;
  --cta:#FFC53D;
  --cta-hover:#FFD666;
  --danger:#FF4D6D;
  --ok:#2BE5A0;
  --text-hi:#EAF6FF;
  --text-mid:#A9BBD1;
  --text-low:#6C7E96;
  --r-lg:24px;
  --r:16px;
  --r-sm:12px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-mid);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;}
::selection{background:rgba(0,229,255,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:999px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}
.text-hi{color:var(--text-hi);}
.text-mid{color:var(--text-mid);}
.text-low{color:var(--text-low);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

.glass{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.glass::before{
  content:"";
  position:absolute;left:12px;right:12px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}
.glow-line{height:1px;width:100%;background:linear-gradient(90deg,transparent,rgba(0,229,255,.45),rgba(122,92,255,.35),transparent);}
.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
}
.spot-cyan,.spot-violet{position:absolute;border-radius:999px;filter:blur(70px);pointer-events:none;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--bg-deep);border-bottom:1px solid rgba(255,255,255,.08);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;padding-top:6px;padding-bottom:6px;}
.topbar-left{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--text-low);}
.topbar-dot{width:7px;height:7px;border-radius:999px;background:var(--ok);box-shadow:0 0 10px rgba(43,229,160,.8);flex:0 0 auto;}
.topbar-right{display:flex;align-items:center;gap:18px;font-size:.8125rem;color:var(--text-low);}
.topbar-right a{transition:color .2s ease;}
.topbar-right a:hover{color:var(--text-hi);}
.topbar-cta{color:var(--primary)!important;}
.topbar-cta:hover{color:var(--primary-600)!important;}
.topbar-right a:nth-child(1),.topbar-right a:nth-child(2){display:none;}
@media(min-width:900px){.topbar-right a:nth-child(1),.topbar-right a:nth-child(2){display:inline;}}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,8,15,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease;}
.site-header.scrolled{background:rgba(5,8,15,.9);border-bottom-color:rgba(0,229,255,.28);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#00E5FF,#7A5CFF);box-shadow:0 0 20px -6px rgba(0,229,255,.7);}
.brand-name{font-weight:700;font-size:1.125rem;color:var(--text-hi);letter-spacing:.01em;}
.brand-sub{font-size:.75rem;color:var(--text-low);border-left:1px solid var(--line);padding-left:10px;letter-spacing:.08em;}
.nav-desktop{display:none;align-items:center;gap:30px;}
@media(min-width:1024px){.nav-desktop{display:flex;}}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:.9375rem;color:var(--text-mid);transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.nav-link:hover{color:var(--text-hi);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text-hi);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.burger{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-hi);transition:border-color .2s ease,background .2s ease;}
.burger:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);}
@media(min-width:1024px){.burger{display:none;}}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.7);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:90;background:rgba(10,17,32,.96);backdrop-filter:blur(16px);border-left:1px solid var(--line);transform:translateX(102%);transition:transform .28s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;padding:20px;}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-list{display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;}
.drawer-list a{display:block;padding:14px 4px;font-size:1.0625rem;color:var(--text-hi);border-bottom:1px solid rgba(255,255,255,.08);transition:color .2s ease,padding-left .2s ease;}
.drawer-list a:hover,.drawer-list a.active{color:var(--primary);padding-left:10px;}
.drawer-foot{display:flex;flex-direction:column;gap:12px;padding-top:16px;}
.close-btn{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-hi);}
.close-btn:hover{border-color:var(--line-glow);}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-sm);font-size:.9375rem;font-weight:600;letter-spacing:.01em;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;white-space:nowrap;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#04121A;box-shadow:0 0 24px -6px rgba(0,229,255,.55),inset 0 0 0 1px rgba(0,229,255,.6);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px -6px rgba(0,229,255,.75),inset 0 0 0 1px rgba(0,229,255,.8);filter:brightness(1.06);}
.btn-accent{background:var(--cta);color:#241A00;box-shadow:0 0 22px -8px rgba(255,197,61,.75);}
.btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px);}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text-hi);}
.btn-ghost:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 16px;font-size:.875rem;}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid rgba(255,255,255,.06);background:rgba(10,17,32,.5);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--text-low);padding:12px 0;}
.crumb a{color:var(--text-mid);transition:color .2s ease;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-low);opacity:.7;}
.crumb .current{color:var(--text-low);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
@media(max-width:640px){.crumb .current{white-space:normal;}}

/* ============ 文章头部 ============ */
.article-hero{position:relative;overflow:hidden;padding:40px 0 32px;border-bottom:1px solid rgba(255,255,255,.06);}
.article-hero .grid-texture{position:absolute;inset:0;opacity:.9;}
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:.75rem;letter-spacing:.08em;border:1px solid var(--line);background:var(--panel);color:var(--primary);text-transform:uppercase;}
.badge-muted{color:var(--text-low);letter-spacing:.06em;}
.h1-article{font-size:clamp(1.75rem,4vw,3rem);line-height:1.2;font-weight:700;color:var(--text-hi);margin:16px 0 18px;position:relative;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:.8125rem;color:var(--text-low);}
.meta-row .dot{width:4px;height:4px;border-radius:999px;background:var(--line-glow);}

/* 头图 */
.head-figure{margin:28px 0 0;}
.head-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:0 20px 50px -30px rgba(0,229,255,.5);}
.figcap{margin-top:10px;text-align:center;font-size:.8125rem;color:var(--text-low);}

/* ============ 布局 ============ */
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:72px 0;}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 306px;gap:44px;}}
.article-main{min-width:0;max-width:820px;}
.article-shell{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);}
@media(min-width:768px){.article-shell{padding:34px 38px;}}

.article-body{font-size:1rem;line-height:1.9;color:var(--text-mid);overflow-wrap:anywhere;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{font-size:1.375rem;line-height:1.45;font-weight:700;color:var(--text-hi);margin:1.9em 0 .7em;padding-left:12px;border-left:4px solid var(--primary);}
.article-body h3{font-size:1.125rem;line-height:1.5;font-weight:600;color:var(--text-hi);margin:1.6em 0 .5em;}
.article-body h4{font-size:1rem;font-weight:600;color:var(--text-hi);margin:1.4em 0 .4em;}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.25em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.4em 0;line-height:1.75;}
.article-body li::marker{color:var(--primary);}
.article-body blockquote{margin:1.6em 0;padding:14px 20px;border-left:2px solid var(--primary);background:var(--panel-strong);border-radius:0 12px 12px 0;color:var(--text-mid);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body strong{color:var(--text-hi);font-weight:600;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{text-decoration-thickness:2px;}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:.8125rem;color:var(--text-low);}
.article-body table{width:100%;font-size:.9375rem;margin:1.6em 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--panel-strong);color:var(--text-hi);font-weight:600;}
.article-body code{font-family:var(--font-mono);font-size:.9em;background:var(--panel-strong);padding:2px 6px;border-radius:6px;color:var(--primary);}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0;}

/* 空态 */
.empty-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:56px 20px;border:1px dashed rgba(255,255,255,.16);border-radius:var(--r);background:rgba(255,255,255,.02);}
.empty-box svg{color:var(--text-low);}
.empty-box p{color:var(--text-mid);font-size:.9375rem;}

/* 侧栏 */
.side-col{display:flex;flex-direction:column;gap:20px;}
@media(min-width:1024px){.side-col{position:sticky;top:104px;align-self:start;}}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);}
.side-title{font-size:.75rem;letter-spacing:.1em;color:var(--text-low);text-transform:uppercase;margin-bottom:14px;}
.info-list{display:flex;flex-direction:column;gap:12px;font-size:.875rem;}
.info-list .row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.07);}
.info-list .row:last-child{border-bottom:0;padding-bottom:0;}
.info-list .k{color:var(--text-low);flex:0 0 auto;}
.info-list .v{color:var(--text-hi);text-align:right;}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.side-nav a{display:block;padding:10px 12px;border-radius:10px;font-size:.875rem;color:var(--text-mid);transition:background .2s ease,color .2s ease;}
.side-nav a:hover{background:rgba(0,229,255,.08);color:var(--text-hi);}

/* 标签与分享 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel);color:var(--text-mid);font-size:.8125rem;transition:border-color .2s ease,color .2s ease;}
.tag:hover{border-color:var(--line-glow);color:var(--text-hi);}
.share-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px;}
.icon-btn{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:10px;border:1px solid var(--line);color:var(--text-mid);font-size:.875rem;transition:border-color .2s ease,color .2s ease,background .2s ease;}
.icon-btn:hover{border-color:var(--line-glow);color:var(--text-hi);background:rgba(0,229,255,.07);}

/* 上一篇/下一篇 */
.pager{display:grid;grid-template-columns:1fr;gap:16px;margin-top:34px;}
@media(min-width:768px){.pager{grid-template-columns:1fr 1fr;}}
.pager-card{display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.pager-card:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
.pager-card img{width:76px;height:56px;object-fit:cover;border-radius:10px;flex:0 0 auto;border:1px solid var(--line);}
.pager-card .label{font-size:.75rem;color:var(--text-low);letter-spacing:.08em;}
.pager-card .title{font-size:.9375rem;font-weight:600;color:var(--text-hi);line-height:1.5;margin-top:2px;}

/* 相关推荐 */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rel-card{display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.rel-card:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
.rel-card .thumb{position:relative;overflow:hidden;}
.rel-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{padding:16px 18px 20px;}
.rel-card h3{font-size:1rem;font-weight:600;color:var(--text-hi);line-height:1.5;margin-bottom:8px;}
.rel-card p{font-size:.875rem;color:var(--text-mid);line-height:1.7;}
.rel-card .foot{margin-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--text-low);}

/* 板块标题 */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.sec-title{font-size:1.75rem;line-height:1.35;font-weight:700;color:var(--text-hi);}
.sec-sub{margin-top:8px;font-size:.9375rem;color:var(--text-low);}
.link-cyan{color:var(--primary);font-size:.9375rem;text-decoration:underline;text-underline-offset:4px;transition:color .2s ease;}
.link-cyan:hover{color:var(--primary-600);}

/* CTA 条 */
.cta-strip{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--panel);padding:28px 22px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);}
@media(min-width:768px){.cta-strip{padding:38px 40px;}}
.cta-strip .spot-cyan{width:280px;height:280px;background:rgba(0,229,255,.16);top:-120px;left:-60px;}
.cta-strip .spot-violet{width:300px;height:300px;background:rgba(122,92,255,.16);bottom:-150px;right:-80px;}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr;gap:24px;align-items:center;}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.3fr .7fr;}}
.cta-inner h2{font-size:1.5rem;line-height:1.4;font-weight:700;color:var(--text-hi);margin-bottom:10px;}
.cta-inner p{font-size:.9375rem;color:var(--text-mid);}
.cta-stats{display:flex;flex-wrap:wrap;gap:20px;margin-top:18px;}
.cta-stat{min-width:96px;}
.cta-stat .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:700;color:var(--primary);}
.cta-stat .lab{font-size:.75rem;color:var(--text-low);letter-spacing:.06em;}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.08);margin-top:24px;}
.footer-link{font-size:.875rem;color:var(--text-mid);transition:color .2s ease,padding-left .2s ease;}
.footer-link:hover{color:var(--primary);padding-left:6px;}
.back-top{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:10px;border:1px solid var(--line);color:var(--text-mid);font-size:.8125rem;transition:border-color .2s ease,color .2s ease,background .2s ease;}
.back-top:hover{border-color:var(--line-glow);color:var(--text-hi);background:rgba(0,229,255,.08);}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;}
  .rel-card:hover,.pager-card:hover,.btn:hover{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-base:#05080F;
  --bg-deep:#0A1120;
  --panel:rgba(255,255,255,0.05);
  --panel-strong:rgba(255,255,255,0.08);
  --line:rgba(255,255,255,0.10);
  --line-glow:rgba(0,229,255,0.35);
  --primary:#00E5FF;
  --primary-600:#00B8D4;
  --accent:#7A5CFF;
  --cta:#FFC53D;
  --cta-hover:#FFD666;
  --danger:#FF4D6D;
  --text-hi:#EAF6FF;
  --text-mid:#A9BBD1;
  --text-low:#6C7E96;
  --ok:#2BE5A0;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-mid);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
svg{display:block}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}

/* 文本色 */
.text-hi{color:var(--text-hi)}
.text-mid{color:var(--text-mid)}
.text-low{color:var(--text-low)}
.text-primary{color:var(--primary)}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

/* 玻璃面 */
.glass{
  background:var(--panel);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);
  position:relative;
}
.glass::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}
.glass-strong{background:var(--panel-strong)}
.radius-lg{border-radius:var(--radius-lg)}
.radius-md{border-radius:var(--radius-md)}

/* 网格纹理 */
.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
}
.glow-line{height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,255,.45),rgba(122,92,255,.35),transparent)}

/* 霓虹光斑 */
.orb{position:absolute;border-radius:999px;filter:blur(90px);pointer-events:none;z-index:0}
.orb-cyan{background:rgba(0,229,255,.18)}
.orb-violet{background:rgba(122,92,255,.16)}
@keyframes drift{
  0%{transform:translate3d(0,0,0)}
  50%{transform:translate3d(24px,-18px,0)}
  100%{transform:translate3d(0,0,0)}
}
.orb-anim{animation:drift 16s ease-in-out infinite}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,opacity .2s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,#00E5FF 0%,#7A5CFF 100%);
  color:#04121A;
  box-shadow:0 0 24px -6px rgba(0,229,255,.55),inset 0 0 0 1px rgba(0,229,255,.6);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 36px -6px rgba(0,229,255,.6),inset 0 0 0 1px rgba(0,229,255,.7)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -8px rgba(0,229,255,.5)}
.btn-accent{
  background:var(--cta);color:#241A00;
  box-shadow:0 0 22px -8px rgba(255,197,61,.7);
}
.btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;
}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;transition:background-color .25s ease,box-shadow .25s ease}
.site-header.scrolled{
  background:rgba(5,8,15,.86);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line-glow);
  box-shadow:0 12px 30px -24px rgba(0,229,255,.6);
}
.topbar{height:40px;background:var(--bg-deep);border-bottom:1px solid rgba(255,255,255,.08);font-size:13px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-mid);
  padding:8px 2px;transition:color .2s ease-out;
}
.nav-link:hover{color:var(--text-hi)}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#00E5FF,#7A5CFF);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-hi);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.7);backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:.25s ease-out;z-index:70}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82%;max-width:340px;z-index:80;
  background:rgba(10,17,32,.95);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s ease-out;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateX(0)}
.drawer a.drawer-link{
  display:block;padding:14px 4px;font-size:17px;color:var(--text-hi);
  border-bottom:1px solid rgba(255,255,255,.08);transition:color .2s ease
}
.drawer a.drawer-link:hover{color:var(--primary)}
.drawer a.drawer-link.active{color:var(--primary)}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  border:1px solid var(--line-glow);background:rgba(0,229,255,.08);color:var(--primary);
  text-transform:uppercase;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:13px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-mid);
}
.stamp{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:16px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,#00E5FF,#7A5CFF);
  box-shadow:0 0 20px -8px rgba(0,229,255,.7);
}

/* 卡片 */
.card{
  background:var(--panel);backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-md);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  position:relative;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-glow);box-shadow:0 18px 40px -24px rgba(0,229,255,.45)}

/* 交替长条 */
.alt-row{
  background:var(--panel);backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:20px;transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
@media (min-width:768px){.alt-row{padding:28px}}
.alt-row:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45)}
.alt-media{position:relative;overflow:hidden;border-radius:var(--radius-md);border:1px solid var(--line)}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.alt-row:hover .alt-media img{transform:scale(1.04)}

/* 数据条 */
.metric{padding:20px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(255,255,255,.035)}
.metric .num{font-family:ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;font-size:24px;color:var(--text-hi);font-weight:700}

/* 步骤 */
.step-node{
  width:14px;height:14px;border-radius:999px;background:var(--primary);
  box-shadow:0 0 0 4px rgba(0,229,255,.18),0 0 18px rgba(0,229,255,.6);
}

/* 表单 */
.field{
  width:100%;height:48px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  padding:0 14px;color:var(--text-hi);transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:var(--text-low)}
.field:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,229,255,.16);outline:none}
select.field{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-mid) 50%),linear-gradient(135deg,var(--text-mid) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.req-dot{display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--danger);margin-left:6px;vertical-align:middle}

/* FAQ */
.faq-item{border-bottom:1px solid rgba(255,255,255,.08)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-hi);transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .24s ease-out,border-color .24s ease-out,background-color .24s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--line-glow);background:rgba(0,229,255,.1)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a-inner{padding:0 0 20px;color:var(--text-mid);font-size:15px;line-height:1.85}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line)}
.footer-link{font-size:14px;color:var(--text-mid);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-link:hover{color:var(--primary);transform:translateX(3px)}

/* 站内链接卡 */
.link-card{
  display:block;padding:20px;border-radius:var(--radius-md);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:border-color .2s ease,transform .2s ease,background-color .2s ease;
}
.link-card:hover{border-color:var(--line-glow);background:rgba(0,229,255,.07);transform:translateY(-3px)}

/* 返回顶部 */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:50;
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(10,17,32,.9);border:1px solid var(--line-glow);color:var(--primary);
  opacity:0;visibility:hidden;transition:.25s ease-out;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:rgba(0,229,255,.14)}

/* 滚动条与选区 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,.55)}
::selection{background:rgba(0,229,255,.28);color:#fff}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .card:hover,.alt-row:hover,.link-card:hover,.btn:hover{transform:none !important}
}

/* roulang page: category3 */
:root{
    --bg-base:#05080F;
    --bg-deep:#0A1120;
    --panel:rgba(255,255,255,.05);
    --panel-strong:rgba(255,255,255,.08);
    --line:rgba(255,255,255,.10);
    --line-glow:rgba(0,229,255,.35);
    --primary:#00E5FF;
    --primary-600:#00B8D4;
    --accent:#7A5CFF;
    --cta:#FFC53D;
    --cta-hover:#FFD666;
    --danger:#FF4D6D;
    --text-hi:#EAF6FF;
    --text-mid:#A9BBD1;
    --text-low:#6C7E96;
    --ok:#2BE5A0;
    --radius-lg:24px;
    --radius:16px;
    --radius-sm:12px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  html body{
    margin:0;
    background:var(--bg-base);
    color:var(--text-mid);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul,ol{padding:0;list-style:none}
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  button{background:none;border:none;cursor:pointer}
  table{border-collapse:collapse;width:100%}

  ::selection{background:rgba(0,229,255,.28);color:#fff}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:transparent}
  ::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:999px}
  ::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,.55)}

  :focus-visible{outline:2px solid var(--primary);outline-offset:2px}

  html body .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:16px;
    padding-right:16px;
  }
  @media (min-width:768px){
    html body .container{padding-left:24px;padding-right:24px}
  }
  @media (min-width:1280px){
    html body .container{max-width:1200px}
  }

  .text-hi{color:var(--text-hi)}
  .text-mid{color:var(--text-mid)}
  .text-low{color:var(--text-low)}
  .text-primary{color:var(--primary)}
  .mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

  h1,h2,h3,h4{color:var(--text-hi);font-weight:700}
  .h1{font-size:clamp(1.75rem,4vw,3rem);line-height:1.15;font-weight:700}
  .h2{font-size:clamp(1.375rem,2.4vw,1.75rem);line-height:1.35;font-weight:700}
  .h3{font-size:1.125rem;line-height:1.5;font-weight:600}
  .lead{font-size:1rem;line-height:1.8;color:var(--text-mid)}
  .small{font-size:.875rem;line-height:1.5}
  .micro{font-size:.75rem;line-height:1.4;letter-spacing:.08em}

  .section{padding-top:48px;padding-bottom:48px}
  @media (min-width:768px){.section{padding-top:64px;padding-bottom:64px}}
  @media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}

  /* 玻璃与装饰 */
  .glass{
    position:relative;
    background:var(--panel);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
  }
  .glass::before{
    content:"";
    position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
    pointer-events:none;
  }
  .glass-strong{background:var(--panel-strong)}
  .glow-line{
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,229,255,.45),rgba(122,92,255,.35),transparent);
  }
  .grid-texture{
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
    background-size:48px 48px;
    pointer-events:none;
  }
  .orb{
    position:absolute;border-radius:50%;filter:blur(80px);opacity:.18;pointer-events:none;
    animation:orbFloat 18s ease-in-out infinite alternate;
  }
  .orb-cyan{background:#00E5FF}
  .orb-violet{background:#7A5CFF;animation-duration:24s}
  @keyframes orbFloat{
    from{transform:translate3d(0,0,0)}
    to{transform:translate3d(24px,-18px,0)}
  }

  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;
    border-radius:999px;
    font-size:.75rem;letter-spacing:.08em;
    border:1px solid rgba(0,229,255,.28);
    background:rgba(0,229,255,.08);
    color:var(--primary);
    white-space:nowrap;
  }
  .chip-muted{
    border-color:var(--line);
    background:rgba(255,255,255,.04);
    color:var(--text-low);
    letter-spacing:.04em;
  }

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--radius-sm);
    font-size:.9375rem;font-weight:600;line-height:1;
    border:1px solid transparent;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out,filter .2s ease-out;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#04121A;
    box-shadow:0 0 24px -6px rgba(0,229,255,.55),inset 0 0 0 1px rgba(0,229,255,.6);
  }
  .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 36px -6px rgba(0,229,255,.75),inset 0 0 0 1px rgba(0,229,255,.85)}
  .btn-primary:active{transform:translateY(1px);filter:brightness(.96);box-shadow:0 0 16px -8px rgba(0,229,255,.5)}
  .btn-accent{
    background:var(--cta);color:#241A00;
    box-shadow:0 12px 30px -20px rgba(255,197,61,.9);
  }
  .btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px)}
  .btn-accent:active{transform:translateY(1px)}
  .btn-ghost{
    background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi);
  }
  .btn-ghost:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08)}
  .btn-ghost:active{background:rgba(0,229,255,.14)}
  .btn-sm{height:40px;padding:0 16px;font-size:.875rem;border-radius:10px}
  .btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;filter:none}

  .text-link{
    color:var(--primary);
    text-decoration:underline;
    text-underline-offset:4px;
    transition:font-weight .2s ease,color .2s ease;
  }
  .text-link:hover{font-weight:600;color:#7FF0FF}

  /* 顶部信息条 */
  .site-header{position:sticky;top:0;z-index:60}
  .topbar{
    height:40px;
    background:var(--bg-deep);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
  .topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
  .topbar-badge{
    display:none;
    padding:2px 10px;border-radius:999px;
    font-size:.75rem;letter-spacing:.06em;color:#04121A;font-weight:700;
    background:linear-gradient(135deg,var(--primary),var(--accent));
  }
  .topbar-text{font-size:.75rem;color:var(--text-low);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar-right{display:flex;align-items:center;gap:18px}
  .topbar-link{display:none;font-size:.75rem;color:var(--text-mid);transition:color .2s ease}
  .topbar-link:hover{color:var(--primary)}
  .topbar-cta{font-size:.75rem;color:var(--primary);font-weight:600;transition:opacity .2s ease}
  .topbar-cta:hover{opacity:.78}
  @media (min-width:640px){.topbar-badge{display:inline-flex}}
  @media (min-width:768px){.topbar-link{display:inline-flex}}

  /* 主导航 */
  .navbar{
    background:rgba(5,8,15,.72);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
  }
  .site-header.is-scrolled .navbar{
    background:rgba(5,8,15,.94);
    border-bottom-color:var(--line-glow);
    box-shadow:0 12px 32px -26px rgba(0,229,255,.6);
  }
  .navbar-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
  @media (min-width:1024px){.navbar-inner{height:72px}}

  .brand{display:inline-flex;align-items:center;gap:10px}
  .brand-mark{
    width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#00E5FF,#7A5CFF);
    box-shadow:0 0 20px -8px rgba(0,229,255,.8);
  }
  .brand-text{font-size:1.125rem;font-weight:700;color:var(--text-hi);letter-spacing:.02em}
  .brand-sub{display:none;font-size:.75rem;color:var(--text-low);letter-spacing:.08em}
  @media (min-width:768px){.brand-sub{display:inline}}

  nav.desktop-nav{display:none}
  .nav-link{
    position:relative;
    font-size:.9375rem;
    color:var(--text-mid);
    padding:6px 2px;
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    opacity:0;transform:scaleX(.4);transition:opacity .2s ease,transform .2s ease;
  }
  .nav-link:hover{color:var(--text-hi)}
  .nav-link:hover::after{opacity:.6;transform:scaleX(1)}
  .nav-link.active{color:var(--primary)}
  .nav-link.active::after{opacity:1;transform:scaleX(1)}
  @media (min-width:1024px){
    nav.desktop-nav{display:flex!important;align-items:center;gap:32px}
  }

  .navbar-actions{display:flex;align-items:center;gap:12px}
  button.menu-toggle{
    display:inline-flex!important;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    color:var(--text-hi);
    transition:border-color .2s ease,background .2s ease;
  }
  button.menu-toggle:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08)}
  @media (min-width:1024px){
    button.menu-toggle{display:none!important}
  }
  .nav-cta-desktop{display:none}
  @media (min-width:768px){.nav-cta-desktop{display:inline-flex}}

  /* 移动抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(2,5,10,.72);
    backdrop-filter:blur(4px);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
    background:rgba(10,17,32,.96);
    backdrop-filter:blur(18px) saturate(140%);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s ease-out;
    z-index:90;
    display:flex;flex-direction:column;
    padding:20px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer-link{
    display:block;padding:14px 4px;font-size:1.0625rem;font-weight:600;color:var(--text-hi);
    border-bottom:1px solid rgba(255,255,255,.08);
    transition:color .2s ease,padding-left .2s ease;
  }
  .drawer-link:hover,.drawer-link.active{color:var(--primary);padding-left:8px}
  .drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}

  /* Banner */
  .page-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
  .banner-bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    opacity:.34;
  }
  .banner-bg--main{background-image:url('/assets/images/backpic/back-1.webp')}
  .banner-mask{
    position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(5,8,15,.94) 0%,rgba(5,8,15,.78) 48%,rgba(10,17,32,.9) 100%);
  }
  .banner-inner{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;min-height:240px;display:flex;flex-direction:column;justify-content:center}
  @media (min-width:768px){.banner-inner{padding-top:56px;padding-bottom:56px;min-height:270px}}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:.8125rem;color:var(--text-mid);margin-bottom:16px;flex-wrap:wrap}
  .breadcrumb a{color:var(--text-mid);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:var(--text-low)}
  .breadcrumb .current{color:var(--text-low)}
  .banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

  /* 紧凑信息网格 */
  .cell-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    border-top:1px solid var(--line);
  }
  @media (min-width:640px){.cell-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.cell-grid{grid-template-columns:repeat(4,1fr)}}
  .cell-card{
    position:relative;
    padding:22px 20px 24px;
    border-bottom:1px solid var(--line);
    transition:background .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
  }
  @media (min-width:640px){
    .cell-card{border-right:1px solid var(--line)}
    .cell-grid .cell-card:nth-child(2n){border-right:none}
  }
  @media (min-width:1024px){
    .cell-grid .cell-card:nth-child(2n){border-right:1px solid var(--line)}
    .cell-grid .cell-card:nth-child(4n){border-right:none}
  }
  .cell-card:hover{
    background:rgba(0,229,255,.05);
    transform:translateY(-4px);
    border-color:var(--line-glow);
  }
  .cell-icon{
    width:40px;height:40px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid rgba(0,229,255,.24);
    background:rgba(0,229,255,.07);
    color:var(--primary);
    margin-bottom:14px;
  }
  .cell-card h3{margin-bottom:8px}
  .cell-card p{font-size:.875rem;line-height:1.7;color:var(--text-mid)}
  .cell-meta{
    display:flex;align-items:center;gap:8px;
    margin-top:14px;font-size:.75rem;color:var(--text-low);
    font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
    font-variant-numeric:tabular-nums;
  }
  .cell-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(0,229,255,.8)}

  /* 横条卡 */
  .bar-card{
    display:flex;flex-direction:column;gap:14px;
    padding:20px;
    border-radius:var(--radius);
    border:1px solid var(--line);
    background:var(--panel);
    transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  }
  @media (min-width:768px){
    .bar-card{flex-direction:row;align-items:center;gap:24px;padding:22px 24px}
  }
  .bar-card:hover{
    border-color:var(--line-glow);
    transform:translateY(-4px);
    box-shadow:0 18px 40px -24px rgba(0,229,255,.45);
  }
  .bar-index{
    flex:0 0 auto;
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
    font-weight:700;font-size:.9375rem;
    color:#04121A;
    background:linear-gradient(135deg,var(--primary),var(--accent));
  }
  .bar-body{flex:1 1 auto;min-width:0}
  .bar-body h3{margin-bottom:6px}
  .bar-body p{font-size:.875rem;line-height:1.75;color:var(--text-mid)}
  .bar-stat{
    flex:0 0 auto;
    font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
    font-variant-numeric:tabular-nums;
    font-size:1.125rem;font-weight:700;color:var(--primary);
  }

  /* 数据卡 */
  .stat-grid{
    display:grid;grid-template-columns:repeat(2,1fr);gap:16px;
  }
  @media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
  .stat-card{
    padding:20px;
    border-radius:var(--radius);
    border:1px solid var(--line);
    background:var(--panel);
    transition:border-color .2s ease-out,transform .2s ease-out;
  }
  .stat-card:hover{border-color:var(--line-glow);transform:translateY(-4px)}
  .stat-label{font-size:.8125rem;color:var(--text-low);margin-bottom:8px}
  .stat-value{
    font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
    font-variant-numeric:tabular-nums;
    font-size:1.5rem;font-weight:700;color:var(--text-hi);line-height:1.2;
  }
  .stat-value span{font-size:.875rem;color:var(--text-mid);font-weight:500;margin-left:4px}

  /* 表单 */
  .form-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:640px){.form-grid{grid-template-columns:repeat(2,1fr)}}
  .field{display:flex;flex-direction:column;gap:8px}
  .field label{font-size:.8125rem;color:var(--text-mid);display:flex;align-items:center;gap:6px}
  .req-dot{width:6px;height:6px;border-radius:50%;background:var(--danger);display:inline-block}
  .control{
    height:48px;width:100%;
    padding:0 14px;
    border-radius:var(--radius-sm);
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    color:var(--text-hi);
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .control::placeholder{color:var(--text-low)}
  .control:hover{border-color:rgba(255,255,255,.2)}
  .control:focus{
    outline:none;
    border-color:var(--primary);
    background:rgba(0,229,255,.06);
    box-shadow:0 0 0 4px rgba(0,229,255,.14);
  }
  select.control{
    appearance:none;-webkit-appearance:none;
    background-image:linear-gradient(45deg,transparent 50%,var(--text-mid) 50%),linear-gradient(135deg,var(--text-mid) 50%,transparent 50%);
    background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
    background-size:6px 6px,6px 6px;
    background-repeat:no-repeat;
    padding-right:40px;
  }

  /* FAQ */
  .faq-list{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);overflow:hidden}
  .faq-item + .faq-item{border-top:1px solid rgba(255,255,255,.08)}
  .faq-btn{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px;text-align:left;
    transition:background .2s ease;
  }
  .faq-btn:hover{background:rgba(0,229,255,.05)}
  .faq-btn span.q{font-size:1rem;font-weight:600;color:var(--text-hi);line-height:1.5}
  .faq-icon{
    flex:0 0 auto;width:28px;height:28px;border-radius:8px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);
    color:var(--primary);
    transition:transform .24s ease-out,border-color .2s ease,background .2s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--line-glow);background:rgba(0,229,255,.1)}
  .faq-panel{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
  .faq-panel p{padding:0 20px 20px;font-size:.9375rem;line-height:1.8;color:var(--text-mid)}

  /* 站内链接 */
  .link-row{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 18px;border-radius:var(--radius-sm);
    border:1px solid var(--line);background:rgba(255,255,255,.03);
    transition:border-color .2s ease,background .2s ease,transform .2s ease;
  }
  .link-row:hover{border-color:var(--line-glow);background:rgba(0,229,255,.06);transform:translateX(4px)}
  .link-row .arrow{color:var(--primary);flex:0 0 auto}

  /* 页脚 */
  .site-footer{
    position:relative;
    background:var(--bg-deep);
    border-top:1px solid var(--line);
  }
  .footer-link{font-size:.875rem;color:var(--text-mid);transition:color .2s ease,padding-left .2s ease}
  .footer-link:hover{color:var(--primary);padding-left:4px}
  .back-top{
    display:inline-flex;align-items:center;gap:8px;
    height:44px;padding:0 18px;border-radius:12px;
    border:1px solid rgba(255,255,255,.18);
    color:var(--text-hi);font-size:.875rem;
    transition:border-color .2s ease,background .2s ease,transform .2s ease;
  }
  .back-top:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px)}
  .back-top:active{transform:translateY(1px)}

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
    html{scroll-behavior:auto}
    .cell-card:hover,.bar-card:hover,.stat-card:hover,.link-row:hover,.btn:hover{transform:none}
  }

/* roulang page: category2 */
:root{
  --bg-base:#05080F;
  --bg-deep:#0A1120;
  --panel:rgba(255,255,255,0.05);
  --panel-strong:rgba(255,255,255,0.08);
  --line:rgba(255,255,255,0.10);
  --line-glow:rgba(0,229,255,0.35);
  --primary:#00E5FF;
  --primary-600:#00B8D4;
  --accent:#7A5CFF;
  --cta:#FFC53D;
  --cta-hover:#FFD666;
  --danger:#FF4D6D;
  --text-hi:#EAF6FF;
  --text-mid:#A9BBD1;
  --text-low:#6C7E96;
  --ok:#2BE5A0;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-mid);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select{font:inherit;color:inherit}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(0,229,255,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,.55)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}

.text-hi{color:var(--text-hi)}
.text-mid{color:var(--text-mid)}
.text-low{color:var(--text-low)}
.text-primary{color:var(--primary)}
.text-gold{color:var(--cta)}

.h1{font-size:clamp(1.75rem,4vw,3.5rem);line-height:1.15;font-weight:700;color:var(--text-hi)}
.h2{font-size:clamp(1.375rem,2.6vw,1.75rem);line-height:1.35;font-weight:700;color:var(--text-hi)}
.h3{font-size:1.125rem;line-height:1.5;font-weight:600;color:var(--text-hi)}
.lead{font-size:1rem;line-height:1.85;color:var(--text-mid)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--primary);
  font-family:var(--font-mono);
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--primary);opacity:.7}

.glass{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}
.glow-line{height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,255,.5),rgba(122,92,255,.35),transparent)}

.topbar{background:var(--bg-deep);border-bottom:1px solid rgba(255,255,255,.08)}
.top-link{font-size:12px;color:var(--text-low);transition:color .2s ease}
.top-link:hover{color:var(--text-hi)}

.site-header{
  position:sticky;top:0;z-index:50;
  background:transparent;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(5,8,15,.86);border-bottom-color:rgba(0,229,255,.28)}

.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 20px -6px rgba(0,229,255,.7);
}
.logo-mark svg{display:block}

.nav-link{
  position:relative;font-size:14.5px;color:var(--text-mid);
  padding:6px 2px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text-hi)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-hi);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

.menu-btn,.icon-btn{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--panel);color:var(--text-hi);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.menu-btn:hover,.icon-btn:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08)}
.menu-btn:active,.icon-btn:active{transform:translateY(1px)}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 24px -6px rgba(0,229,255,.55),inset 0 0 0 1px rgba(0,229,255,.6);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 36px -6px rgba(0,229,255,.7),inset 0 0 0 1px rgba(0,229,255,.75)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.95);box-shadow:0 0 16px -8px rgba(0,229,255,.5)}
.btn-primary[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;color:#241A00;
  background:var(--cta);
  box-shadow:0 0 22px -8px rgba(255,197,61,.75);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px)}
.btn-accent:active{transform:translateY(1px)}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 20px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--text-hi);
  border:1px solid rgba(255,255,255,.18);background:transparent;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}

.link-cyan{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;transition:color .2s ease}
.link-cyan:hover{color:#7DF0FF;font-weight:600}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:var(--panel);border:1px solid var(--line);
  color:var(--text-mid);font-size:12.5px;letter-spacing:.02em;
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(0,229,255,.85);flex:0 0 auto}
.chip.is-gold .dot{background:var(--cta);box-shadow:0 0 10px rgba(255,197,61,.85)}

.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:11.5px;letter-spacing:.06em;
  border:1px solid var(--line);background:var(--panel-strong);color:var(--text-mid);
}
.badge.risk-high{border-color:rgba(255,77,109,.45);color:#FF9AAF;background:rgba(255,77,109,.10)}
.badge.risk-mid{border-color:rgba(255,197,61,.40);color:#FFD98A;background:rgba(255,197,61,.10)}
.badge.risk-note{border-color:rgba(0,229,255,.35);color:#8DEEFF;background:rgba(0,229,255,.08)}

.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.18;pointer-events:none;z-index:0}
.orb-cyan{background:var(--primary)}
.orb-violet{background:var(--accent)}

.page-banner{
  position:relative;overflow:hidden;
  padding:40px 0 44px;
  background:var(--bg-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.30;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.55),rgba(5,8,15,.94));
}
.page-banner .container{position:relative;z-index:1}
@media (min-width:768px){.page-banner{padding:56px 0 62px;min-height:280px;display:flex;align-items:center}}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-low);margin-bottom:18px}
.breadcrumb a{color:var(--text-low);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.25)}
.breadcrumb .current{color:var(--text-low);opacity:.85}

.stat-card{
  position:relative;padding:20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.stat-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}
.stat-card:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45)}
.stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.5rem,3vw,1.95rem);font-weight:700;color:var(--text-hi);letter-spacing:.01em}

.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(0,229,255,.6),rgba(122,92,255,.35),rgba(122,92,255,0));
}
@media (min-width:768px){.timeline{padding-left:40px}.timeline::before{left:13px}}

.tl-item{position:relative;margin-bottom:20px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:28px;
  width:14px;height:14px;border-radius:50%;
  background:#04121A;border:2px solid var(--primary);
  box-shadow:0 0 14px rgba(0,229,255,.75);
  animation:pulseDot 3.2s ease-in-out infinite;
}
@media (min-width:768px){.tl-item::before{left:-33px}}

.node-card{
  position:relative;padding:22px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
@media (min-width:768px){.node-card{padding:24px}}
.node-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}
.node-card:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45)}
.node-card.is-offset{margin-right:0}
@media (min-width:1024px){.node-card.is-offset{margin-right:56px}}

.node-index{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 20px -6px rgba(0,229,255,.7);
}
.node-data{
  margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:12.5px;color:var(--text-low);
}
.node-data .sep{color:rgba(255,255,255,.2)}

.risk-card{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.risk-card:hover{border-color:var(--line-glow);transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,229,255,.45)}
.risk-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(0,229,255,.28);background:rgba(0,229,255,.07);color:var(--primary);
}

.split-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line-glow);
  box-shadow:0 30px 60px -40px rgba(0,229,255,.7),inset 0 0 0 1px rgba(255,255,255,.04);
}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-float{
  position:absolute;right:16px;bottom:16px;
  padding:12px 14px;border-radius:14px;
  background:rgba(10,17,32,.78);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:12.5px;color:var(--text-mid);
}

.check-list li{
  position:relative;padding:0 0 0 30px;margin-bottom:16px;
  font-size:15px;line-height:1.85;color:var(--text-mid);
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:12px;height:12px;border-radius:4px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 12px -2px rgba(0,229,255,.7);
}
.check-list strong{color:var(--text-hi);font-weight:600}

.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  padding:30px 22px;
  background:var(--panel-strong);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.cta-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
}
@media (min-width:768px){.cta-panel{padding:46px 48px}}

.faq-item{border-bottom:1px solid rgba(255,255,255,.08)}
.faq-item:first-child{border-top:1px solid rgba(255,255,255,.08)}
.faq-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 2px;text-align:left;transition:color .2s ease;
}
.faq-head:hover h3{color:var(--primary)}
.faq-head h3{font-size:1.0625rem;line-height:1.5;font-weight:600;color:var(--text-hi);transition:color .2s ease}
.faq-plus{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--primary);
  transition:transform .24s ease,border-color .2s ease,background .2s ease;
}
.faq-item.open .faq-plus{transform:rotate(45deg);border-color:var(--line-glow);background:rgba(0,229,255,.08)}
.faq-body{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-body p{padding:0 2px 22px;font-size:15px;line-height:1.9;color:var(--text-mid);max-width:800px}

.link-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.link-row:hover{border-color:var(--line-glow);transform:translateX(4px);box-shadow:0 18px 40px -26px rgba(0,229,255,.45)}
.link-row .arrow{color:var(--primary);flex:0 0 auto;transition:transform .2s ease}
.link-row:hover .arrow{transform:translateX(4px)}

.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;z-index:80;
  padding:22px;overflow-y:auto;
  background:rgba(10,17,32,.97);
  border-left:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transform:translateX(102%);
  transition:transform .3s ease;
}
.drawer.open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,12,.72);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-link{
  display:block;padding:14px 4px;font-size:17px;font-weight:600;color:var(--text-mid);
  border-bottom:1px solid rgba(255,255,255,.06);transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover,.drawer-link.active{color:var(--primary);padding-left:8px}

.site-footer{
  background:var(--bg-deep);
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-link{font-size:14px;color:var(--text-mid);transition:color .2s ease,padding-left .2s ease}
.footer-link:hover{color:var(--primary);padding-left:4px}

#backTop{
  position:fixed;right:16px;bottom:20px;z-index:60;
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(10,17,32,.85);border:1px solid var(--line-glow);color:var(--primary);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  opacity:0;pointer-events:none;transition:opacity .25s ease,transform .2s ease;
}
#backTop.show{opacity:1;pointer-events:auto}
#backTop:hover{transform:translateY(-3px)}

@keyframes pulseDot{
  0%,100%{box-shadow:0 0 10px rgba(0,229,255,.5)}
  50%{box-shadow:0 0 22px rgba(0,229,255,.95)}
}
@keyframes drift{
  0%,100%{transform:translate3d(0,0,0)}
  50%{transform:translate3d(20px,-16px,0)}
}
.orb{animation:drift 16s ease-in-out infinite}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .orb,.tl-item::before{animation:none !important}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .split-media:hover img{transform:none}
}

/* roulang page: category4 */
:root{
    --bg-base:#05080F;
    --bg-deep:#0A1120;
    --panel:rgba(255,255,255,0.05);
    --panel-strong:rgba(255,255,255,0.08);
    --line:rgba(255,255,255,0.10);
    --line-glow:rgba(0,229,255,0.35);
    --primary:#00E5FF;
    --primary-600:#00B8D4;
    --accent:#7A5CFF;
    --cta:#FFC53D;
    --cta-hover:#FFD666;
    --danger:#FF4D6D;
    --text-hi:#EAF6FF;
    --text-mid:#A9BBD1;
    --text-low:#6C7E96;
    --ok:#2BE5A0;
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:12px;
    --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--text-mid);
    font-family:-apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul,ol{padding:0;list-style:none;}
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{background:none;border:none;cursor:pointer;}

  ::selection{background:rgba(0,229,255,.28);color:var(--text-hi);}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:transparent;}
  ::-webkit-scrollbar-thumb{background:rgba(0,229,255,.35);border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,.55);}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}

  .section{padding:48px 0;}
  @media (min-width:768px){.section{padding:64px 0;}}
  @media (min-width:1024px){.section{padding:96px 0;}}

  .text-hi{color:var(--text-hi);}
  .text-mid{color:var(--text-mid);}
  .text-low{color:var(--text-low);}
  .text-primary{color:var(--primary);}
  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

  h1{font-size:clamp(1.75rem,4vw,3.5rem);line-height:1.15;font-weight:700;color:var(--text-hi);}
  h2{font-size:1.75rem;line-height:1.35;font-weight:700;color:var(--text-hi);}
  h3{font-size:1.125rem;line-height:1.5;font-weight:600;color:var(--text-hi);}

  /* ---------- 顶部信息条 ---------- */
  .topbar{
    background:var(--bg-deep);
    border-bottom:1px solid rgba(255,255,255,.08);
    min-height:40px;
    display:flex;
    align-items:center;
    font-size:.8125rem;
    color:var(--text-low);
  }
  .topbar-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding-top:6px;padding-bottom:6px;flex-wrap:wrap;
  }
  .topbar-brand{display:inline-flex;align-items:center;gap:8px;color:var(--text-mid);}
  .topbar-dot{width:6px;height:6px;border-radius:999px;background:var(--ok);box-shadow:0 0 10px rgba(43,229,160,.8);}
  .topbar-links{display:flex;align-items:center;gap:18px;}
  .topbar-link{color:var(--text-low);transition:color .2s ease;}
  .topbar-link:hover{color:var(--text-hi);}
  .topbar-cta{color:var(--primary);font-weight:600;transition:color .2s ease;}
  .topbar-cta:hover{color:var(--text-hi);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(5,8,15,.72);
    backdrop-filter:blur(12px) saturate(140%);
    border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
  }
  .site-header.scrolled{
    background:rgba(5,8,15,.94);
    border-bottom-color:rgba(0,229,255,.28);
    box-shadow:0 14px 30px -26px rgba(0,229,255,.6);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
  .brand{display:inline-flex;align-items:center;gap:12px;}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#00E5FF,#7A5CFF);
    box-shadow:0 0 22px -8px rgba(0,229,255,.9);
  }
  .brand-name{font-size:1.125rem;font-weight:700;color:var(--text-hi);letter-spacing:.01em;}
  .brand-sub{display:block;font-size:.6875rem;letter-spacing:.16em;color:var(--text-low);text-transform:uppercase;}

  .nav-link{
    position:relative;
    font-size:.9375rem;
    color:var(--text-mid);
    padding:6px 2px;
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,#00E5FF,#7A5CFF);
    transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
  }
  .nav-link:hover{color:var(--text-hi);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--primary);}
  .nav-link.active::after{transform:scaleX(1);}

  .hamburger{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--text-hi);
    transition:border-color .2s ease,background .2s ease;
  }
  .hamburger:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);}

  .drawer-mask{
    position:fixed;inset:0;z-index:60;
    background:rgba(5,8,15,.72);
    backdrop-filter:blur(4px);
    opacity:0;pointer-events:none;transition:opacity .24s ease;
  }
  .drawer-mask.show{opacity:1;pointer-events:auto;}
  .mobile-drawer{
    position:fixed;top:0;right:0;z-index:70;
    height:100%;width:min(86vw,360px);
    padding:24px;
    overflow-y:auto;
    background:rgba(10,17,32,.97);
    border-left:1px solid var(--line);
    backdrop-filter:blur(16px) saturate(140%);
    transform:translateX(102%);
    transition:transform .28s ease;
  }
  .mobile-drawer.show{transform:translateX(0);}
  body.drawer-open{overflow:hidden;}
  .drawer-link{
    display:block;padding:14px 12px;border-radius:var(--radius-sm);
    font-size:1.0625rem;color:var(--text-mid);
    transition:background .2s ease,color .2s ease;
  }
  .drawer-link:hover,.drawer-link.active{background:rgba(0,229,255,.10);color:var(--text-hi);}

  /* ---------- 按钮 ---------- */
  .btn-primary,.btn-accent,.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 22px;border-radius:var(--radius-sm);
    font-size:.9375rem;font-weight:600;letter-spacing:.01em;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,filter .2s ease-out;
    cursor:pointer;
  }
  .btn-primary{
    color:#04121A;
    background:linear-gradient(135deg,#00E5FF,#7A5CFF);
    box-shadow:0 0 24px -6px rgba(0,229,255,.55), inset 0 0 0 1px rgba(0,229,255,.6);
  }
  .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 36px -6px rgba(0,229,255,.75), inset 0 0 0 1px rgba(0,229,255,.8);}
  .btn-primary:active{transform:translateY(1px);filter:brightness(.95);box-shadow:0 0 18px -8px rgba(0,229,255,.5);}
  .btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none;}

  .btn-accent{
    color:#241A00;
    background:var(--cta);
    box-shadow:0 0 22px -10px rgba(255,197,61,.9);
  }
  .btn-accent:hover{background:var(--cta-hover);transform:translateY(-2px);}
  .btn-accent:active{transform:translateY(1px);filter:brightness(.96);}
  .btn-accent:disabled{opacity:.45;cursor:not-allowed;transform:none;}

  .btn-ghost{
    color:var(--text-hi);
    background:transparent;
    border:1px solid rgba(255,255,255,.18);
  }
  .btn-ghost:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(1px);}

  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
    outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;
  }

  /* ---------- 玻璃与装饰 ---------- */
  .glass{
    position:relative;
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    backdrop-filter:blur(16px) saturate(140%);
  }
  .glass::before{
    content:"";position:absolute;inset:0 0 auto 0;height:1px;border-radius:inherit;
    background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.18),rgba(255,255,255,0));
  }
  .glass-lg{border-radius:var(--radius-lg);}
  .glow-line{height:1px;background:linear-gradient(90deg,rgba(0,229,255,0),rgba(0,229,255,.6),rgba(0,229,255,0));}
  .grid-texture{
    background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
    background-size:48px 48px;
  }
  .orb{
    position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;
    animation:drift 18s ease-in-out infinite alternate;
  }
  .orb-cyan{width:420px;height:420px;background:rgba(0,229,255,.16);}
  .orb-violet{width:380px;height:380px;background:rgba(122,92,255,.16);animation-delay:-6s;}
  @keyframes drift{
    0%{transform:translate3d(0,0,0) scale(1);}
    100%{transform:translate3d(30px,-24px,0) scale(1.08);}
  }

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:.75rem;letter-spacing:.08em;
    color:var(--primary);
    background:rgba(0,229,255,.10);
    border:1px solid rgba(0,229,255,.28);
  }
  .badge-gold{color:var(--cta);background:rgba(255,197,61,.10);border-color:rgba(255,197,61,.30);}
  .badge-violet{color:#B7A6FF;background:rgba(122,92,255,.14);border-color:rgba(122,92,255,.32);}
  .badge-muted{color:var(--text-low);background:rgba(255,255,255,.05);border-color:var(--line);}

  .stamp{
    display:inline-flex;align-items:center;justify-content:center;
    padding:3px 10px;border-radius:6px;
    font-family:var(--mono);font-size:.75rem;letter-spacing:.08em;
    color:var(--primary);
    border:1px solid rgba(0,229,255,.45);
    background:rgba(0,229,255,.06);
    transform:rotate(-4deg);
    white-space:nowrap;
  }
  .stamp-gold{color:var(--cta);border-color:rgba(255,197,61,.5);background:rgba(255,197,61,.08);}

  /* ---------- Banner ---------- */
  .page-banner{
    position:relative;
    min-height:260px;
    display:flex;align-items:flex-end;
    padding:40px 0 32px;
    background-image:linear-gradient(180deg,rgba(5,8,15,.55) 0%,rgba(5,8,15,.92) 78%,rgba(5,8,15,.98) 100%),
                     url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--text-low);}
  .breadcrumb a{color:var(--text-mid);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .current{color:var(--text-low);}

  /* ---------- 要点速览 ---------- */
  .fact-bar{
    display:grid;grid-template-columns:1fr;gap:0;
    border-radius:var(--radius-lg);
    overflow:hidden;
  }
  @media (min-width:640px){.fact-bar{grid-template-columns:1fr 1fr;}}
  @media (min-width:1024px){.fact-bar{grid-template-columns:repeat(4,1fr);}}
  .fact-cell{
    padding:20px 22px;
    border-top:1px solid rgba(255,255,255,.08);
    position:relative;
  }
  @media (min-width:640px){
    .fact-cell{border-left:1px solid rgba(255,255,255,.08);}
    .fact-cell:nth-child(odd){border-left:none;}
  }
  @media (min-width:1024px){
    .fact-cell{border-left:1px solid rgba(255,255,255,.08);border-top:none;}
    .fact-cell:first-child{border-left:none;}
  }
  .fact-label{font-size:.75rem;letter-spacing:.08em;color:var(--text-low);text-transform:uppercase;margin-bottom:8px;}
  .fact-value{font-family:var(--mono);font-size:1.0625rem;color:var(--text-hi);font-weight:600;}

  /* ---------- 编号列表 ---------- */
  .num-item{
    display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:start;
    padding:20px 22px;
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    background:var(--panel);
    backdrop-filter:blur(16px) saturate(140%);
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .num-item:hover{transform:translateY(-4px);border-color:var(--line-glow);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
  .num-index{
    font-family:var(--mono);font-variant-numeric:tabular-nums;
    font-size:1.75rem;font-weight:700;line-height:1;
    color:var(--primary);
    text-shadow:0 0 18px rgba(0,229,255,.5);
    padding-top:2px;
    min-width:44px;
  }
  .num-meta{font-family:var(--mono);font-size:.75rem;color:var(--text-low);letter-spacing:.06em;margin-top:10px;}
  @media (max-width:639px){
    .num-item{grid-template-columns:auto 1fr;}
    .num-item .stamp{grid-column:2;justify-self:start;margin-top:10px;transform:none;}
  }

  /* ---------- 横条卡 ---------- */
  .bar-card{
    display:grid;grid-template-columns:1fr;gap:14px;
    padding:22px;
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    background:linear-gradient(120deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .bar-card:hover{transform:translateY(-4px);border-color:var(--line-glow);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
  @media (min-width:768px){
    .bar-card{grid-template-columns:64px 1fr auto;align-items:center;gap:22px;}
  }
  .bar-step{
    width:56px;height:56px;border-radius:14px;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-size:1.125rem;font-weight:700;
    color:#04121A;background:linear-gradient(135deg,#00E5FF,#7A5CFF);
    box-shadow:0 0 22px -8px rgba(0,229,255,.9);
  }

  /* ---------- 小卡网格 ---------- */
  .tile{
    padding:22px;
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    background:var(--panel);
    backdrop-filter:blur(16px) saturate(140%);
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
    height:100%;
  }
  .tile:hover{transform:translateY(-4px);border-color:var(--line-glow);box-shadow:0 18px 40px -24px rgba(0,229,255,.45);}
  .offset-a{transform:translateY(0);}
  @media (min-width:1024px){
    .offset-a{margin-top:24px;}
  }

  .icon-badge{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid rgba(0,229,255,.28);
    background:rgba(0,229,255,.08);
    color:var(--primary);
    margin-bottom:14px;
  }

  /* ---------- 图文卡 ---------- */
  .feature-card{
    overflow:hidden;border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:var(--panel);
    backdrop-filter:blur(16px) saturate(140%);
  }
  .feature-card img{width:100%;height:100%;object-fit:cover;}
  .img-frame{
    border-radius:var(--radius-lg);
    overflow:hidden;
    border:1px solid rgba(0,229,255,.35);
    box-shadow:inset 0 0 40px -20px rgba(0,229,255,.6), 0 24px 60px -40px rgba(0,229,255,.6);
  }

  /* ---------- 表单 ---------- */
  .field{
    width:100%;min-height:48px;padding:0 14px;
    border-radius:var(--radius-sm);
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
    color:var(--text-hi);
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .field::placeholder{color:var(--text-low);}
  .field:hover{border-color:rgba(255,255,255,.2);}
  .field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,229,255,.18);background:rgba(255,255,255,.07);}
  select.field{
    appearance:none;
    background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg width='14' height='9' viewBox='0 0 14 9' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%2300E5FF' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat:no-repeat;
    background-position:right 14px center;
    padding-right:38px;
  }
  .req-dot{display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--danger);margin-left:6px;vertical-align:middle;}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid rgba(255,255,255,.08);}
  .faq-item:first-child{border-top:1px solid rgba(255,255,255,.08);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 4px;text-align:left;
    transition:color .2s ease;
  }
  .faq-q:hover h3{color:var(--primary);}
  .faq-q h3{transition:color .2s ease;}
  .faq-plus{
    flex:none;width:32px;height:32px;border-radius:10px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--primary);
    transition:transform .24s ease,border-color .24s ease,background .24s ease;
  }
  .faq-item.open .faq-plus{transform:rotate(45deg);border-color:var(--line-glow);background:rgba(0,229,255,.10);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
  .faq-item.open .faq-a{max-height:420px;}
  .faq-a-inner{padding:0 4px 22px;font-size:.9375rem;color:var(--text-mid);line-height:1.75;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:linear-gradient(180deg,rgba(10,17,32,.4),rgba(5,8,15,1));
    border-top:1px solid var(--line);
  }
  .footer-link{color:var(--text-mid);font-size:.9375rem;transition:color .2s ease;}
  .footer-link:hover{color:var(--primary);}

  #backTop{
    min-height:44px;padding:0 18px;border-radius:var(--radius-sm);
    border:1px solid rgba(255,255,255,.18);color:var(--text-hi);font-size:.875rem;
    transition:border-color .2s ease,background .2s ease,transform .2s ease;
  }
  #backTop:hover{border-color:var(--line-glow);background:rgba(0,229,255,.08);transform:translateY(-2px);}

  @keyframes pulseGlow{
    0%,100%{opacity:.55;transform:scale(1);}
    50%{opacity:1;transform:scale(1.12);}
  }
  .pulse-dot{animation:pulseGlow 2.4s ease-in-out infinite;}

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition-duration:.01ms !important;}
    html{scroll-behavior:auto;}
    .num-item:hover,.bar-card:hover,.tile:hover,.btn-primary:hover,.btn-accent:hover,.btn-ghost:hover{transform:none;}
  }