/* roulang page: index */
:root{
  --bg-0:#070C16;--bg-1:#0B1220;--bg-2:#0F1A2E;
  --brand:#2F6BFF;--brand-deep:#1B47C4;--accent:#2EE6C5;--hot:#FF7A45;
  --text-1:#EAF0FF;--text-2:#9FB0CC;--text-3:#6B7A99;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;--r-img:14px;--r-badge:8px;--r-input:14px;
  --shadow-1:0 2px 8px rgba(0,0,0,.24);
  --shadow-2:0 12px 32px rgba(0,0,0,.36);
  --glow:0 0 18px rgba(47,107,255,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#2F6BFF;
  --bs-link-hover-color:#2EE6C5;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.6;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,107,255,.4);}

.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;position:relative;}
.section-sm{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-title{font-size:28px;}
.sec-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px;}
.sec-line{width:56px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand),var(--accent));margin-bottom:16px;}
.link-more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.link-more:hover{color:var(--accent);}
.link-more::after{content:"→";transition:transform .22s var(--ease);}
.link-more:hover::after{transform:translateX(4px);}

/* ===== 悬浮胶囊导航 ===== */
.site-capsule-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1160px,calc(100% - 32px));z-index:1040;border-radius:999px;
  background:rgba(10,16,28,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-capsule-nav.is-scrolled{background:rgba(8,13,24,.94);box-shadow:0 12px 32px rgba(0,0,0,.5);border-color:var(--line-strong);}
.nav-inner{height:60px;display:flex;align-items:center;gap:16px;padding:0 8px 0 18px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));color:#06101F;
  font-weight:800;font-size:16px;flex-shrink:0;
}
.brand-text{font-size:15px;font-weight:700;color:var(--text-1);white-space:nowrap;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;font-size:14px;color:var(--text-2);padding:8px 13px;border-radius:999px;
  white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:0 0 10px rgba(47,107,255,.7);
}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-burger{
  width:40px;height:40px;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid var(--line);display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:4px;cursor:pointer;transition:background .2s var(--ease);
}
.nav-burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-drawer{
  position:fixed;inset:0;z-index:1050;background:rgba(7,12,22,.98);
  display:none;flex-direction:column;padding:88px 24px 32px;border-radius:0;overflow-y:auto;
}
.nav-drawer.open{display:flex;}
.drawer-title{font-size:12px;color:var(--text-3);letter-spacing:.16em;margin:20px 0 10px;}
.drawer-link{
  display:block;padding:14px 16px;border-radius:14px;font-size:16px;color:var(--text-1);
  border:1px solid var(--line);margin-bottom:10px;background:var(--bg-1);
}
.drawer-link.active{border-color:rgba(47,107,255,.5);color:var(--accent);}

/* ===== 按钮 ===== */
.btn{
  border-radius:999px;font-weight:600;font-size:14px;padding:0 22px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
  will-change:transform;
}
.btn:active{transform:translateY(0);filter:brightness(.94);}
.btn-sm{height:38px;font-size:13px;padding:0 18px;}
.btn-lg{height:50px;font-size:15px;padding:0 28px;}
.btn-primary{
  background:linear-gradient(90deg,var(--brand),var(--accent));color:#05101F;border:none;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 26px rgba(47,107,255,.5);color:#05101F;}
.btn-outline{
  background:transparent;color:var(--text-1);border:1px solid var(--line-strong);
}
.btn-outline:hover{border-color:var(--brand);color:var(--text-1);transform:translateY(-2px);background:rgba(47,107,255,.1);}
.btn-ghost{background:transparent;color:var(--text-2);padding:0 10px;}
.btn-ghost:hover{color:var(--accent);}
.btn-hot{background:linear-gradient(90deg,var(--hot),#FFB27A);color:#2A1103;border:none;box-shadow:0 0 18px rgba(255,122,69,.4);}
.btn-hot:hover{transform:translateY(-2px);color:#2A1103;box-shadow:0 0 26px rgba(255,122,69,.55);}
.btn:disabled,.btn.disabled{opacity:.4;pointer-events:none;}

/* ===== 标签 / 徽章 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;background:rgba(47,107,255,.12);color:#8FB2FF;border:1px solid rgba(47,107,255,.22);
}
.tag-accent{background:rgba(46,230,197,.12);color:var(--accent);border-color:rgba(46,230,197,.24);}
.tag-hot{background:rgba(255,122,69,.14);color:#FFA477;border-color:rgba(255,122,69,.28);}
.badge-num{font-variant-numeric:tabular-nums;}

/* ===== Hero ===== */
.hero-vertical{
  position:relative;padding:158px 0 92px;overflow:hidden;
  background-image:
    linear-gradient(45deg,rgba(7,12,22,.97) 0%,rgba(7,12,22,.86) 45%,rgba(7,12,22,.6) 100%),
    url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero-vertical::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:72px 72px;
}
.hero-inner{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(46,230,197,.1);border:1px solid rgba(46,230,197,.24);color:var(--accent);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;margin-bottom:22px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;box-shadow:0 0 8px var(--accent);}
.hero-h1{font-size:40px;line-height:1.22;margin-bottom:18px;}
.hero-h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:16px;color:var(--text-2);line-height:1.8;max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:38px;}
.hero-stats{display:flex;gap:14px;flex-wrap:wrap;}
.stat-chip{
  min-width:132px;padding:14px 18px;border-radius:16px;background:var(--glass);
  border:1px solid var(--line);backdrop-filter:blur(8px);
}
.stat-num{font-size:22px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-label{font-size:12.5px;color:var(--text-3);margin-top:4px;}
.hero-screen-wrap{display:flex;justify-content:center;}
.hero-screen{
  position:relative;width:100%;max-width:400px;aspect-ratio:9/16;border-radius:22px;overflow:hidden;
  background:#0c1424;border:1px solid var(--line-strong);box-shadow:0 24px 60px rgba(0,0,0,.6);
}
.hero-screen img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.hero-screen::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top,rgba(7,12,22,.95) 0%,rgba(7,12,22,.25) 46%,rgba(7,12,22,.55) 100%);
}
.screen-top{position:absolute;top:16px;left:16px;right:16px;z-index:3;display:flex;justify-content:space-between;align-items:center;gap:8px;}
.screen-bottom{position:absolute;left:18px;right:18px;bottom:18px;z-index:3;}
.screen-time{
  display:inline-flex;height:24px;padding:0 9px;border-radius:6px;align-items:center;
  background:rgba(255,122,69,.92);color:#2A1103;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.screen-title{font-size:18px;font-weight:700;line-height:1.45;margin-bottom:6px;}
.screen-note{font-size:13px;color:var(--text-2);}
.screen-play{
  width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));
  display:grid;place-items:center;color:#05101F;font-size:16px;margin-bottom:14px;box-shadow:var(--glow);
}
.scan-line{
  position:absolute;left:0;right:0;height:1px;z-index:4;
  background:linear-gradient(90deg,transparent,rgba(46,230,197,.75),transparent);
  animation:scanmove 6s linear infinite;
}
@keyframes scanmove{0%{top:8%;}50%{top:88%;}100%{top:8%;}}

/* ===== 片段卡轨道 ===== */
.clip-rail{position:relative;}
.clip-track{
  display:flex;gap:16px;overflow-x:auto;overflow-y:hidden;padding:6px 16px 22px;margin:0 -16px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.clip-track::-webkit-scrollbar{display:none;}
.clip-card{
  flex:0 0 240px;scroll-snap-align:start;position:relative;aspect-ratio:9/16;border-radius:16px;
  overflow:hidden;background:var(--bg-2);border:1px solid var(--line);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.clip-card:hover{transform:scale(1.02) translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.clip-card img{width:100%;height:100%;object-fit:cover;}
.clip-shade{position:absolute;inset:0;background:linear-gradient(to top,rgba(5,9,18,.96) 4%,rgba(5,9,18,.5) 42%,rgba(5,9,18,0) 72%);}
.clip-body{position:absolute;left:14px;right:14px;bottom:14px;z-index:2;}
.clip-title{font-size:14.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:9px;}
.clip-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:9px;}
.clip-tags span{font-size:11.5px;padding:2px 8px;border-radius:6px;background:rgba(255,255,255,.1);color:var(--text-2);}
.clip-foot{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.clip-dur{
  position:absolute;top:12px;right:12px;z-index:3;height:22px;padding:0 8px;border-radius:6px;
  background:rgba(255,122,69,.94);color:#2A1103;font-size:11.5px;font-weight:700;
  display:inline-flex;align-items:center;font-variant-numeric:tabular-nums;
}
.clip-play{
  position:absolute;top:12px;left:12px;z-index:3;width:30px;height:30px;border-radius:50%;
  background:rgba(12,20,34,.7);border:1px solid rgba(255,255,255,.22);display:grid;place-items:center;
  color:#EAF0FF;font-size:11px;backdrop-filter:blur(6px);
}

/* ===== 种草清单 ===== */
.pick-big{
  position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--bg-1);
  border:1px solid var(--line);height:100%;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.pick-big:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.pick-big-media{position:relative;aspect-ratio:16/10;overflow:hidden;}
.pick-big-media img{width:100%;height:100%;object-fit:cover;}
.pick-big-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(11,18,32,.9),transparent 62%);}
.pick-num{
  font-size:38px;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--brand));-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.pick-big-body{padding:22px;display:flex;flex-direction:column;gap:16px;flex:1;}
.pick-big-head{display:flex;gap:16px;align-items:flex-start;}
.pick-big-title{font-size:20px;margin-bottom:6px;}
.pick-points li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.85;margin-bottom:4px;}
.pick-points li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--accent);}
.pick-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;flex-wrap:wrap;}
.pick-meta span{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.pick-small{
  position:relative;border-radius:var(--r-card);background:var(--bg-1);border:1px solid var(--line);
  padding:22px 20px;height:100%;display:flex;gap:14px;align-items:flex-start;
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.pick-small:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--bg-2);}
.pick-small .pick-num{font-size:30px;min-width:44px;}
.pick-small-title{font-size:16px;margin-bottom:8px;}
.pick-small-text{font-size:13.5px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.pick-small-meta{font-size:12.5px;color:var(--text-3);margin-top:12px;font-variant-numeric:tabular-nums;}

/* ===== 口碑滚动 ===== */
.review-marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);}
.review-track{display:flex;gap:16px;width:max-content;animation:marquee 40s linear infinite;}
.review-marquee:hover .review-track{animation-play-state:paused;}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}
.review-card{
  width:300px;flex:0 0 300px;border-radius:16px;background:var(--bg-1);border:1px solid var(--line);
  padding:18px;transition:border-color .22s var(--ease);
}
.review-card:hover{border-color:var(--line-strong);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:36px;height:36px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-deep),var(--brand));color:#EAF0FF;font-size:14px;font-weight:700;
}
.review-name{font-size:14px;font-weight:600;}
.review-time{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.stars{color:var(--hot);font-size:12px;letter-spacing:2px;margin-bottom:8px;}
.review-text{font-size:13.5px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ===== CTA 跟买条 ===== */
.cta-buybar{
  border-radius:var(--r-card);background:linear-gradient(100deg,#0A1526 0%,#101E38 55%,#0C1730 100%);
  border:1px solid var(--line-strong);padding:34px 38px;display:flex;align-items:center;
  justify-content:space-between;gap:26px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-buybar::before{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,107,255,.35),transparent 68%);
}
.cta-buybar h2{font-size:24px;margin-bottom:10px;position:relative;}
.cta-buybar p{font-size:14px;color:var(--text-2);max-width:640px;position:relative;}
.cta-buybar .btn{position:relative;}

/* ===== 最新信息 ===== */
.news-card{
  border-radius:var(--r-card);overflow:hidden;background:var(--bg-1);border:1px solid var(--line);
  height:100%;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.news-link{display:flex;gap:16px;padding:16px;height:100%;}
.news-thumb{flex:0 0 112px;width:112px;aspect-ratio:4/3;border-radius:var(--r-img);overflow:hidden;background:var(--bg-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.06);}
.news-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-date{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-title{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-sum{font-size:13px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-panel{border-radius:var(--r-card);background:var(--bg-1);border:1px solid var(--line);padding:24px;height:100%;}
.side-panel h3{font-size:16px;margin-bottom:16px;}
.side-list li{border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:none;}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14px;color:var(--text-2);}
.side-list a:hover{color:var(--accent);}
.side-list a::after{content:"→";font-size:13px;color:var(--text-3);}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);padding:56px 24px;text-align:center;background:var(--bg-1);
}
.empty-ico{width:52px;height:52px;margin:0 auto 16px;border-radius:14px;background:rgba(47,107,255,.12);display:grid;place-items:center;}
.empty-ico svg{width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.6;}
.empty-state p{font-size:14px;color:var(--text-3);}

/* ===== FAQ ===== */
.faq-block .accordion-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease);
}
.faq-block .accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-strong);}
.faq-block .accordion-button{
  background:transparent;color:var(--text-1);font-size:15.5px;font-weight:600;
  padding:20px 22px;border:none;box-shadow:none;
}
.faq-block .accordion-button:not(.collapsed){color:var(--brand);background:rgba(47,107,255,.07);}
.faq-block .accordion-button::after{
  content:"";width:10px;height:10px;border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);background:none;transition:transform .24s var(--ease),border-color .24s var(--ease);
  margin-left:auto;flex-shrink:0;
}
.faq-block .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--brand);}
.faq-block .accordion-button:focus{box-shadow:none;}
.faq-block .accordion-body{padding:0 22px 22px;font-size:14.5px;color:var(--text-2);line-height:1.9;}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 24px;margin-top:8px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand span:last-child{font-size:16px;font-weight:700;}
.foot-desc{font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:340px;}
.foot-title{font-size:14px;color:var(--text-2);font-weight:600;margin-bottom:16px;}
.foot-links li{margin-bottom:10px;}
.foot-links a{font-size:14px;color:var(--text-1);}
.foot-links a:hover{color:var(--brand);}
.foot-info li{font-size:13.5px;color:var(--text-2);margin-bottom:10px;line-height:1.7;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.back-top{
  position:fixed;right:22px;bottom:88px;width:44px;height:44px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line-strong);color:var(--text-1);
  display:grid;place-items:center;cursor:pointer;z-index:900;backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{border-color:var(--brand);transform:translateY(-2px);color:var(--accent);}

/* ===== 响应式 ===== */
@media (max-width:1399.98px){
  .container-x{max-width:1140px;}
}
@media (max-width:1199.98px){
  .container-x{max-width:960px;}
  .review-card{width:280px;flex:0 0 280px;}
}
@media (max-width:991.98px){
  .container-x{max-width:720px;padding:0 20px;}
  .section{padding:64px 0;}
  .site-capsule-nav{top:10px;width:calc(100% - 20px);}
  .nav-links{display:none;}
  .nav-inner{height:56px;padding:0 8px 0 14px;}
  .brand-text{font-size:14px;white-space:normal;line-height:1.25;max-width:150px;}
  .hero-vertical{padding:120px 0 64px;}
  .hero-h1{font-size:32px;}
  .hero-screen-wrap{margin-top:44px;}
  .sec-title{font-size:24px;}
  .clip-card{flex:0 0 200px;}
  .cta-buybar{padding:26px 24px;}
}
@media (max-width:767.98px){
  .container-x{max-width:100%;padding:0 16px;}
  .section{padding:48px 0;}
  .hero-vertical{padding:104px 0 52px;}
  .hero-h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .hero-cta .btn{flex:1 1 auto;}
  .stat-chip{flex:1 1 40%;min-width:0;}
  .sec-title{font-size:20px;}
  .clip-card{flex:0 0 160px;}
  .pick-num{font-size:30px;}
  .review-card{width:280px;flex:0 0 280px;}
  .cta-buybar{
    position:sticky;bottom:12px;border-radius:999px;padding:14px 16px;gap:12px;
    background:rgba(10,16,28,.95);backdrop-filter:blur(14px);flex-wrap:nowrap;
  }
  .cta-buybar h2{font-size:15px;margin-bottom:0;}
  .cta-buybar p{display:none;}
  .cta-buybar .btn{height:38px;font-size:13px;padding:0 16px;flex-shrink:0;}
  .cta-buybar::before{display:none;}
  .news-link{flex-direction:column;}
  .news-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9;}
  .back-top{bottom:84px;right:14px;}
  .foot-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575.98px){
  .hero-h1{font-size:23px;}
  .brand-text{max-width:126px;font-size:13px;}
  .stat-chip{padding:12px 14px;}
  .stat-num{font-size:19px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .review-track{animation:none;flex-wrap:wrap;width:100%;}
  .scan-line{animation:none;top:50%;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: article */
:root{
  --bg-0:#070C16;--bg-1:#0B1220;--bg-2:#0F1A2E;
  --brand:#2F6BFF;--brand-deep:#1B47C4;--accent:#2EE6C5;--hot:#FF7A45;
  --text-1:#EAF0FF;--text-2:#9FB0CC;--text-3:#6B7A99;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;--r-btn:999px;--r-img:14px;--r-input:14px;--r-badge:8px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);--sh-2:0 12px 32px rgba(0,0,0,.36);
  --glow:0 0 18px rgba(47,107,255,.35);
  --container:1320px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2F6BFF;--bs-body-bg:#070C16;--bs-body-color:#EAF0FF;
  --bs-border-color:rgba(255,255,255,.08);--bs-border-radius:18px;
  --bs-link-color:#EAF0FF;--bs-link-hover-color:#2F6BFF;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg-0);color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  background-image:linear-gradient(rgba(255,255,255,.014) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.014) 1px,transparent 1px);
  background-size:56px 56px,56px 56px;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:.02em;line-height:1.25;font-weight:700}
p{margin:0}
button,input,textarea{font-family:inherit}
::selection{background:rgba(47,107,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,system-ui,monospace;font-variant-numeric:tabular-nums}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 悬浮胶囊导航 ============ */
.site-capsule-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:calc(100% - 32px);max-width:1160px;height:60px;z-index:1040;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 12px 0 20px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-capsule-nav.is-scrolled{background:rgba(8,13,24,.92);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.nav-brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:700;font-size:15px;box-shadow:var(--glow);
}
.brand-text{font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:9px 12px;border-radius:999px;font-size:14px;color:var(--text-2);
  white-space:nowrap;transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:var(--glow);
}
.nav-cta{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));color:#04102A;font-size:14px;font-weight:600;white-space:nowrap;
  box-shadow:var(--glow);transition:transform .22s var(--ease),filter .22s var(--ease)}
.nav-cta:hover{transform:translateY(-2px);color:#04102A;filter:brightness(1.05)}
.nav-cta:active{transform:translateY(0);filter:brightness(.94)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--text-1)}
.nav-drawer{
  position:fixed;inset:0;z-index:1050;background:rgba(6,10,20,.97);backdrop-filter:blur(8px);
  padding:84px 24px 40px;display:none;flex-direction:column;gap:6px;
}
.nav-drawer.is-open{display:flex}
.nav-drawer a{padding:14px 4px;font-size:17px;color:var(--text-1);border-bottom:1px solid var(--line)}
.nav-drawer .drawer-cta{margin-top:18px;height:46px;justify-content:center;display:inline-flex;align-items:center;border-radius:var(--r-btn);
  background:linear-gradient(90deg,var(--brand),var(--accent));color:#04102A;font-weight:600;border:0}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;padding:132px 0 44px;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(7,12,22,.96) 0%,rgba(7,12,22,.86) 45%,rgba(7,12,22,.6) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,.6),transparent);
}
.breadcrumb-custom{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.breadcrumb-custom a{color:var(--text-2)}
.breadcrumb-custom a:hover{color:var(--brand)}
.breadcrumb-custom .sep{color:var(--text-3);opacity:.6}
.breadcrumb-custom .crumb-cur{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand-strip{display:inline-flex;align-items:center;gap:10px;padding:7px 14px 7px 8px;border-radius:999px;
  background:rgba(12,20,34,.78);border:1px solid var(--line);margin-bottom:18px}
.brand-strip .brand-mark{width:26px;height:26px;border-radius:8px;font-size:12px}
.brand-strip .strip-name{font-size:13px;font-weight:600;color:var(--text-1)}
.brand-strip .strip-tag{font-size:12px;color:var(--accent);padding-left:10px;border-left:1px solid var(--line)}
.article-title{font-size:40px;max-width:22ch;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.article-meta .meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.article-meta .mono{color:var(--text-2)}
.tag-chip{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:rgba(47,107,255,.12);border:1px solid rgba(47,107,255,.28);color:#9CB6FF;font-size:12px}

/* ============ 正文区 ============ */
.article-main{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:104px;border-left:1px solid var(--line);padding-left:18px}
.toc-title{font-size:12px;letter-spacing:.16em;color:var(--text-3);margin-bottom:14px}
.toc-list li{margin-bottom:10px}
.toc-list a{font-size:13px;color:var(--text-2);display:block;line-height:1.5}
.toc-list a:hover,.toc-list a.is-active{color:var(--brand)}
.article-body{max-width:800px;width:100%;font-size:16px;line-height:1.9;color:#D8E2F5}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:24px;margin:44px 0 18px;padding-left:14px;border-left:3px solid var(--brand);
  line-height:1.35;letter-spacing:.02em;
}
.article-body h3{font-size:19px;margin:32px 0 14px;color:var(--text-1)}
.article-body h4{font-size:17px;margin:24px 0 12px;color:var(--text-1)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body strong{color:#fff;font-weight:600}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.8}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-body ol{counter-reset:cnt}
.article-body ol li::before{
  counter-increment:cnt;content:counter(cnt);position:absolute;left:0;top:.2em;
  width:16px;text-align:right;font-size:13px;color:var(--brand);font-weight:600;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:rgba(255,255,255,.08);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-2);
}
.article-body img{border-radius:var(--r-img);margin:24px 0 8px;width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-bottom:24px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden}
.article-body th{background:var(--bg-2);color:var(--text-1);font-weight:600;text-align:left;padding:12px 14px;font-size:14px}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);color:var(--text-2)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.04)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);padding:56px 24px;text-align:center;background:var(--bg-1);
}
.empty-state .empty-ico{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;
  background:rgba(47,107,255,.12);border:1px solid rgba(47,107,255,.28);color:var(--brand);font-size:22px}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--text-3);font-size:14px;margin-bottom:22px}

/* 文末操作 */
.article-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.btn-main{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));color:#04102A;font-size:15px;font-weight:600;
  box-shadow:var(--glow);transition:transform .22s var(--ease),filter .22s var(--ease)}
.btn-main:hover{transform:translateY(-2px);color:#04102A;filter:brightness(1.05)}
.btn-main:active{transform:translateY(0);filter:brightness(.94)}
.btn-line{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);color:var(--text-1);background:transparent;font-size:15px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease)}
.btn-line:hover{border-color:var(--brand);color:var(--text-1);transform:translateY(-2px);background:rgba(47,107,255,.08)}
.ghost-link{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
.ghost-link:hover{color:var(--brand)}
.ghost-link .arrow{transition:transform .22s var(--ease)}
.ghost-link:hover .arrow{transform:translateX(4px)}

/* ============ 相关推荐 ============ */
.related-section{padding:64px 0;border-top:1px solid var(--line);background:var(--bg-1)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:28px}
.sec-head .sec-sub{margin-top:8px;font-size:14px;color:var(--text-3)}
.related-rail{display:flex;gap:20px;overflow-x:auto;padding:4px 24px 14px;margin:0 -24px;scroll-snap-type:x mandatory;scrollbar-width:none}
.related-rail::-webkit-scrollbar{display:none}
.rel-card{
  flex:0 0 300px;scroll-snap-align:start;border-radius:var(--r-card);overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);color:var(--text-1)}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-0)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.rel-body{padding:18px 18px 20px}
.rel-body .tag-chip{margin-bottom:12px}
.rel-title{font-size:17px;line-height:1.5;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}

/* ============ 底部 CTA ============ */
.cta-buybar{padding:0 0 72px}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(100deg,var(--bg-2),#0A1424 60%,#0C1B33);
  border:1px solid var(--line);border-radius:22px;padding:34px 36px;box-shadow:var(--sh-2);
}
.cta-inner h2{font-size:24px;margin-bottom:10px}
.cta-inner p{font-size:14px;color:var(--text-2);max-width:56ch}
.cta-inner .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 28px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;margin-bottom:16px}
.foot-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:40ch}
.foot-title{font-size:14px;color:var(--text-2);font-weight:600;margin-bottom:16px}
.foot-links li,.foot-info li{margin-bottom:10px;font-size:14px;color:var(--text-1)}
.foot-links a{color:var(--text-1)}
.foot-links a:hover{color:var(--brand)}
.foot-info li{color:var(--text-3)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:24px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);
  background:rgba(12,20,34,.86);color:var(--text-1);display:grid;place-items:center;cursor:pointer;z-index:1030;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .26s var(--ease);backdrop-filter:blur(10px)
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--glow)}

@media (max-width:1399px){
  .article-layout{grid-template-columns:210px minmax(0,1fr);gap:36px}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .article-body{margin:0 auto}
  .article-title{font-size:34px}
}
@media (max-width:991px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid;place-items:center}
  .site-capsule-nav{height:52px;padding:0 10px 0 14px}
  .article-hero{padding:104px 0 34px}
  .related-section,.cta-buybar{padding-top:48px;padding-bottom:48px}
  .cta-inner{padding:26px 22px}
}
@media (max-width:767px){
  .container-x{padding:0 18px}
  .article-title{font-size:26px;max-width:none}
  .article-body{font-size:15px;line-height:1.9}
  .article-body h2{font-size:20px;margin:34px 0 14px}
  .article-body h3{font-size:16px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sec-head h2{font-size:22px}
  .rel-card{flex:0 0 250px}
  .related-rail{padding-left:18px;padding-right:18px;margin:0 -18px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media (max-width:575px){
  .brand-text{font-size:13px;white-space:normal;line-height:1.15;max-width:11ch}
  .cta-inner h2{font-size:20px}
  .cta-inner .cta-actions{width:100%}
  .cta-inner .btn-main,.cta-inner .btn-line{flex:1 1 auto;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --brand:#2F6BFF;
  --brand-deep:#1B47C4;
  --accent:#2EE6C5;
  --hot:#FF7A45;
  --text-1:#EAF0FF;
  --text-2:#9FB0CC;
  --text-3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;
  --r-btn:999px;
  --r-badge:8px;
  --r-input:14px;
  --r-img:14px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);
  --sh-2:0 12px 32px rgba(0,0,0,.36);
  --sh-glow:0 0 18px rgba(47,107,255,.35);
  --container:1320px;
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-border-radius-lg:18px;
  --bs-link-color:#9FB0CC;
  --bs-link-hover-color:#EAF0FF;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.6;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--text-1);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;letter-spacing:.02em;font-weight:700;line-height:1.25;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.num{font-family:system-ui,"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 悬浮胶囊导航 ============ */
.site-capsule-nav{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:min(1160px,calc(100% - 24px));
  z-index:1040;
  display:flex;
  align-items:center;
  gap:18px;
  padding:8px 12px 8px 20px;
  min-height:60px;
  background:rgba(10,16,28,.72);
  border:1px solid var(--line);
  border-radius:999px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-capsule-nav.is-scrolled{
  background:rgba(7,12,22,.93);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text-1);
  font-weight:700;
  font-size:16px;
  letter-spacing:.02em;
  line-height:1.2;
}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#05101F;
  font-weight:700;
  font-size:16px;
  box-shadow:var(--sh-glow);
}
.brand-text{white-space:nowrap;}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:wrap;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  font-size:14px;
  color:var(--text-2);
  border-radius:999px;
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:0;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:translateX(-50%);
  transition:width .26s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--text-1);}
.nav-link.active::after{width:22px;}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:#F2F7FF;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  box-shadow:var(--sh-glow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease);
}
.nav-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 24px rgba(47,107,255,.5);}
.nav-cta:active{transform:translateY(0);filter:brightness(.94);}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:50%;
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  font-size:16px;
  cursor:pointer;
  position:relative;
  z-index:1043;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.09);border-color:var(--line-strong);}

/* ============ 分类页首屏 ============ */
.cat-hero{
  position:relative;
  padding:150px 0 72px;
  background-image:
    linear-gradient(120deg,rgba(7,12,22,.94) 0%,rgba(7,12,22,.78) 48%,rgba(7,12,22,.6) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  opacity:.5;
}
.breadcrumb-custom{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb-custom a{color:var(--text-2);}
.breadcrumb-custom a:hover{color:var(--accent);}
.breadcrumb-custom .sep{color:var(--text-3);}
.breadcrumb-custom .current{color:var(--text-1);}
.cat-title{
  font-size:40px;
  line-height:1.22;
  max-width:860px;
  margin-bottom:16px;
}
.cat-title .hl{
  background:linear-gradient(90deg,var(--brand),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-lead{
  max-width:720px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
  margin-bottom:28px;
}
.cat-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.fact-badge{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  background:rgba(12,20,34,.6);
  font-size:13px;
  color:var(--text-2);
}
.fact-badge strong{
  font-family:system-ui,"Inter",Arial,sans-serif;
  font-size:18px;
  color:var(--accent);
  font-weight:700;
  letter-spacing:0;
}

/* ============ 区块通用 ============ */
.section{padding:88px 0;position:relative;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.section-head h2{font-size:28px;}
.section-head p{
  margin:10px 0 0;
  color:var(--text-2);
  font-size:15px;
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--accent);
  letter-spacing:.08em;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-strong);
  padding-bottom:3px;
}
.link-more:hover{color:var(--accent);border-color:var(--accent);}

/* ============ 筛选胶囊 ============ */
.filter-bar{
  padding:28px 0 8px;
}
.filter-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
}
.filter-pill{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(15,26,46,.5);
  color:var(--text-2);
  font-size:14px;
  transition:all .22s var(--ease);
}
.filter-pill:hover{
  color:var(--text-1);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.filter-pill.active{
  color:#06101F;
  font-weight:600;
  border-color:transparent;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
}
.filter-hint{
  font-size:13px;
  color:var(--text-3);
  margin-left:auto;
}

/* ============ 功能卡片网格 ============ */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card-x{
  display:flex;
  flex-direction:column;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card-x:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--sh-2);
}
.card-x:active{transform:translateY(0);filter:brightness(.94);}
.card-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--bg-2);
}
.card-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.card-x:hover .card-thumb img{transform:scale(1.04);}
.thumb-tag{
  position:absolute;
  left:12px;top:12px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:#06101F;
  font-weight:600;
  background:linear-gradient(90deg,var(--accent),var(--brand));
}
.thumb-time{
  position:absolute;
  right:12px;bottom:12px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:#FFF3EC;
  background:rgba(255,122,69,.9);
  font-weight:600;
}
.card-body-x{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card-body-x h3{font-size:18px;line-height:1.4;}
.card-body-x .desc{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
.card-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.card-meta .cat-label{
  padding:3px 10px;
  border-radius:var(--r-badge);
  background:rgba(47,107,255,.12);
  color:#8FB2FF;
  font-size:12px;
}

/* ============ 分页 ============ */
.pager{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  margin-top:44px;
  flex-wrap:wrap;
}
.page-pill{
  min-width:42px;
  height:42px;
  padding:0 16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(15,26,46,.5);
  color:var(--text-2);
  font-size:14px;
  transition:all .22s var(--ease);
}
.page-pill:hover{color:var(--text-1);border-color:var(--line-strong);transform:translateY(-2px);}
.page-pill.active{
  color:#06101F;
  font-weight:600;
  border-color:transparent;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
}
.page-pill.next{gap:8px;}

/* ============ 非对称价值区 ============ */
.value-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.value-main{
  grid-column:span 6;
  background:linear-gradient(150deg,rgba(47,107,255,.16),rgba(46,230,197,.06)),var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.value-main:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.value-main h3{font-size:22px;}
.value-main p{color:var(--text-2);font-size:15px;line-height:1.85;margin:0;}
.value-side{
  grid-column:span 3;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.value-side:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.value-side .icon-box{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(47,107,255,.14);
  color:var(--accent);
  font-size:17px;
}
.value-side h3{font-size:17px;}
.value-side p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}
.value-side .stat{
  font-family:system-ui,"Inter",Arial,sans-serif;
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:0;
}

/* ============ 场景 + 时间轴 ============ */
.scene-wrap{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:48px;
  align-items:start;
}
.scene-list{display:flex;flex-direction:column;gap:16px;}
.scene-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  padding:20px 22px;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.scene-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.scene-item h3{font-size:16px;margin-bottom:8px;}
.scene-item p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}
.scene-item .tag{
  display:inline-block;
  margin-top:12px;
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--r-badge);
  color:#8FB2FF;
  background:rgba(47,107,255,.12);
}
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:6px;bottom:6px;
  width:1px;
  background:linear-gradient(180deg,var(--brand),rgba(46,230,197,.4),transparent);
}
.tl-node{
  position:relative;
  padding-bottom:26px;
}
.tl-node:last-child{padding-bottom:0;}
.tl-node::before{
  content:"";
  position:absolute;
  left:-24px;top:6px;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(47,107,255,.14);
}
.tl-step{
  font-family:system-ui,"Inter",Arial,sans-serif;
  font-size:13px;
  color:var(--accent);
  letter-spacing:.08em;
  margin-bottom:6px;
}
.tl-node h3{font-size:17px;margin-bottom:8px;}
.tl-node p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0 0 8px;}
.tl-node a{
  font-size:13px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-strong);
  padding-bottom:2px;
}
.tl-node a:hover{color:var(--accent);border-color:var(--accent);}

/* ============ FAQ ============ */
.faq-block{max-width:900px;margin:0 auto;}
.accordion-item{
  background:var(--bg-1);
  border:1px solid var(--line) !important;
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-button{
  background:transparent !important;
  color:var(--text-1) !important;
  font-size:16px;
  font-weight:600;
  padding:18px 20px;
  box-shadow:none !important;
  border-radius:14px !important;
}
.accordion-button:not(.collapsed){
  color:var(--brand) !important;
  background:rgba(47,107,255,.05) !important;
}
.accordion-button::after{
  content:"＋";
  background-image:none !important;
  width:auto;height:auto;
  font-size:17px;
  line-height:1;
  color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  transition:transform .26s var(--ease),color .26s var(--ease);
}
.accordion-button:not(.collapsed)::after{
  content:"＋";
  transform:rotate(45deg);
  color:var(--brand);
}
.accordion-body{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* ============ 底部 CTA ============ */
.cta-buybar{
  background:linear-gradient(100deg,var(--bg-2),rgba(27,71,196,.55));
  border:1px solid var(--line-strong);
  border-radius:22px;
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-buybar h2{font-size:26px;margin-bottom:10px;}
.cta-buybar p{color:var(--text-2);font-size:15px;margin:0;max-width:640px;}
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  color:#06101F;
  border:none;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease);
}
.btn-main:hover{color:#06101F;transform:translateY(-2px);box-shadow:0 0 26px rgba(46,230,197,.45);}
.btn-main:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text-1);
  font-size:15px;
  transition:all .22s var(--ease);
}
.btn-ghost:hover{color:var(--text-1);border-color:var(--brand);background:rgba(47,107,255,.1);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:24px;
  padding:72px 0 28px;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
  z-index:1;
}
.foot-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
}
.foot-desc{
  font-size:14px;
  line-height:1.9;
  color:var(--text-2);
  max-width:340px;
}
.foot-title{
  font-size:14px;
  color:var(--text-2);
  font-weight:600;
  margin-bottom:16px;
}
.foot-links li,.foot-info li{margin-bottom:10px;font-size:14px;}
.foot-links a{color:var(--text-1);}
.foot-links a:hover{color:var(--brand);}
.foot-info li{color:var(--text-2);}
.foot-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;
  right:22px;bottom:26px;
  width:46px;height:46px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(12,20,34,.85);
  color:var(--text-1);
  font-size:16px;
  z-index:1035;
  opacity:0;
  pointer-events:none;
  transition:opacity .26s var(--ease),transform .26s var(--ease);
}
.back-top.show{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-3px);border-color:var(--brand);color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  :root{--container:1200px;}
}
@media (max-width:1199px){
  :root{--container:1020px;}
  .cat-title{font-size:34px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .value-main{grid-column:span 12;}
  .value-side{grid-column:span 6;}
  .scene-wrap{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:991px){
  .site-capsule-nav{min-height:54px;padding:6px 10px 6px 16px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;
    inset:0;
    flex-direction:column;
    justify-content:center;
    align-items:stretch;
    gap:6px;
    padding:88px 28px 40px;
    background:rgba(7,12,22,.97);
    backdrop-filter:blur(16px);
    opacity:0;
    pointer-events:none;
    transition:opacity .26s var(--ease);
    z-index:1042;
    margin-left:0;
    overflow-y:auto;
  }
  body.nav-open .nav-links{opacity:1;pointer-events:auto;}
  .nav-link{font-size:17px;padding:14px 16px;border-radius:14px;border:1px solid transparent;}
  .nav-link.active{border-color:var(--line-strong);background:rgba(47,107,255,.1);}
  .nav-link.active::after{display:none;}
  .cat-hero{padding:126px 0 56px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:24px;}
  .value-side{grid-column:span 12;}
  .cta-buybar{padding:28px 24px;}
  .cta-buybar h2{font-size:22px;}
}
@media (max-width:767px){
  :root{--container:100%;}
  .container-x{padding:0 18px;}
  .brand-logo{font-size:14px;}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:14px;}
  .cat-title{font-size:27px;}
  .cat-lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:21px;}
  .grid-3{grid-template-columns:1fr;}
  .filter-hint{margin-left:0;width:100%;}
  .cta-buybar{flex-direction:column;align-items:flex-start;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .foot-bottom{flex-direction:column;}
  .back-top{right:14px;bottom:14px;}
}
@media (max-width:575px){
  .brand-text{white-space:normal;line-height:1.15;max-width:96px;}
  .cat-facts{gap:8px;}
  .fact-badge{padding:8px 12px;font-size:12px;}
  .card-body-x{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category2 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --brand:#2F6BFF;
  --brand-deep:#1B47C4;
  --accent:#2EE6C5;
  --hot:#FF7A45;
  --text-1:#EAF0FF;
  --text-2:#9FB0CC;
  --text-3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(10,16,28,.72);
  --r-card:18px;
  --r-img:14px;
  --r-badge:8px;
  --r-input:14px;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);
  --sh-2:0 12px 32px rgba(0,0,0,.36);
  --sh-glow:0 0 18px rgba(47,107,255,.35);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-primary:#2F6BFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#9FB0CC;
  --bs-link-hover-color:#FFFFFF;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--text-1);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.02em;color:var(--text-1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container-x{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 导航 ============ */
.site-capsule-nav{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:min(1160px,calc(100% - 32px));
  z-index:1030;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-capsule-nav.is-scrolled{
  background:rgba(7,12,22,.9);
  border-color:var(--line-strong);
  box-shadow:var(--sh-2);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  height:60px;
  padding:0 10px 0 18px;
}
.nav-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-logo:hover{color:#fff;}
.brand-mark{
  width:30px;height:30px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:14px;font-weight:700;
  box-shadow:var(--sh-glow);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{
  color:#fff;
  background:rgba(47,107,255,.16);
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:1px;
  transform:translateX(-50%);
  width:22px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:none;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  color:#05090F;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
  cursor:pointer;
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);color:#05090F;}
.btn-main:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  background:transparent;
  color:var(--text-1);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--brand);background:rgba(47,107,255,.1);color:#fff;}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94);}
.btn-sm{padding:0 16px;height:38px;font-size:13px;}
.nav-cta{height:38px;padding:0 18px;font-size:13px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:1040;
  background:rgba(7,12,22,.97);
  backdrop-filter:blur(10px);
  display:flex;
  flex-direction:column;
  padding:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:999px;
  background:transparent;color:var(--text-1);font-size:16px;cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  padding:14px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  color:var(--text-1);
  font-size:15px;
}
.drawer-links a.active{border-color:var(--brand);background:rgba(47,107,255,.14);}

/* ============ 分类首屏 ============ */
.cat-hero{
  position:relative;
  padding:148px 0 64px;
  background-image:linear-gradient(180deg,rgba(7,12,22,.86) 0%,rgba(7,12,22,.72) 45%,rgba(7,12,22,.96) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.breadcrumb-custom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.breadcrumb-custom a{color:var(--text-2);}
.breadcrumb-custom a:hover{color:var(--accent);}
.breadcrumb-custom .sep{color:var(--text-3);}
.cat-hero h1{
  font-size:40px;
  line-height:1.25;
  max-width:820px;
}
.cat-hero h1 .hl{
  background:linear-gradient(90deg,var(--brand),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-sub{
  margin-top:16px;
  max-width:760px;
  color:var(--text-2);
  font-size:15px;
}
.cat-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:13px;
}
.chip i{color:var(--accent);font-size:12px;}
.chip.active{
  border-color:rgba(47,107,255,.5);
  background:rgba(47,107,255,.14);
  color:var(--text-1);
}

/* ============ 主体分栏 ============ */
.page-main{padding:var(--sp-8) 0 var(--sp-9);}
.cat-layout{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc-side{
  position:sticky;
  top:100px;
  padding:24px 20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  box-shadow:var(--sh-1);
}
.toc-title{
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.toc-list li+li{margin-top:4px;}
.toc-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border-radius:12px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.toc-list a:hover{
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  border-left-color:var(--brand);
}
.toc-list .num{
  font-size:12px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

.cat-content{min-width:0;}
.block{margin-bottom:var(--sp-8);}
.block:last-child{margin-bottom:0;}
.block-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.block-head h2{
  font-size:28px;
  line-height:1.25;
}
.block-head .hint{
  font-size:13px;
  color:var(--text-3);
  white-space:nowrap;
}
.block-lead{
  margin-top:-8px;
  margin-bottom:24px;
  color:var(--text-2);
  font-size:15px;
  max-width:760px;
}

/* 横向卡 */
.hcard{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:24px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:transform .24s var(--ease);
}
.hcard:last-child{border-bottom:none;}
.hcard:hover{transform:translateY(-2px);}
.hcard-img{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--bg-2);
  border:1px solid var(--line);
}
.hcard-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.hcard:hover .hcard-img img{transform:scale(1.03);}
.hcard-badge{
  position:absolute;
  left:10px;top:10px;
  display:inline-flex;align-items:center;gap:5px;
  height:24px;padding:0 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:#1A0C04;
  background:var(--hot);
  font-weight:600;
}
.hcard-body{display:flex;flex-direction:column;gap:10px;min-width:0;}
.hcard-body h3{font-size:20px;}
.hcard-body .desc{
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.hcard-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:auto;
  font-size:13px;
  color:var(--text-3);
}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:var(--brand);
  background:rgba(47,107,255,.12);
  border:1px solid rgba(47,107,255,.28);
}
.tag.accent{color:var(--accent);background:rgba(46,230,197,.1);border-color:rgba(46,230,197,.28);}
.tag.hot{color:var(--hot);background:rgba(255,122,69,.1);border-color:rgba(255,122,69,.3);}
.time-num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.more-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--accent);
  font-weight:600;
}
.more-link i{transition:transform .22s var(--ease);}
.more-link:hover i{transform:translateX(3px);}

/* 主线 编号条目 */
.line-list{
  display:grid;
  gap:0;
}
.line-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) auto;
  align-items:center;
  gap:20px;
  padding:22px 20px;
  border-bottom:1px solid var(--line);
  border-radius:0;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.line-item:hover{background:rgba(255,255,255,.03);transform:translateY(-2px);}
.line-num{
  font-size:28px;
  font-weight:700;
  line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  font-variant-numeric:tabular-nums;
}
.line-item h3{font-size:18px;margin-bottom:6px;}
.line-item p{font-size:14px;color:var(--text-2);}
.line-meta{font-size:13px;color:var(--text-3);white-space:nowrap;}

/* 访客条目 */
.visitor-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.visitor-card{
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.visitor-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--sh-2);
}
.visitor-card .vc-top{
  display:flex;align-items:center;gap:10px;
  margin-bottom:12px;
}
.visitor-card .vc-top i{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(47,107,255,.14);
  color:var(--accent);
  font-size:14px;
}
.visitor-card h3{font-size:18px;}
.visitor-card p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.85;}

/* 步骤 */
.step-flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.step-card{
  position:relative;
  padding:24px 20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--bg-1),var(--bg-0));
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.step-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.step-card .s-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  border-radius:10px;
  font-size:13px;
  font-weight:700;
  color:#05090F;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  margin-bottom:14px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* FAQ */
.faq-block .accordion-item{
  background:transparent;
  border:none;
  border-top:1px solid var(--line);
  border-radius:0;
}
.faq-block .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-block .accordion-button{
  width:100%;
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  padding:22px 46px 22px 0;
  border-radius:0;
  box-shadow:none;
  position:relative;
  transition:color .22s var(--ease);
}
.faq-block .accordion-button::after{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:8px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--text-3);
  background-image:none;
  width:auto;height:auto;
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-block .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
}
.faq-block .accordion-button:not(.collapsed)::after{
  content:"\f068";
  color:var(--brand);
  transform:translateY(-50%) rotate(0deg);
}
.faq-block .accordion-button:focus{box-shadow:none;outline-offset:0;}
.faq-block .accordion-body{
  padding:0 48px 24px 0;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}

/* CTA */
.cta-panel{
  margin-top:var(--sp-8);
  padding:40px 36px;
  border-radius:var(--r-card);
  border:1px solid rgba(47,107,255,.28);
  background:linear-gradient(120deg,rgba(27,71,196,.28),rgba(46,230,197,.08) 70%,rgba(12,20,34,.6));
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  box-shadow:var(--sh-2);
}
.cta-panel h2{font-size:26px;}
.cta-panel p{margin-top:10px;color:var(--text-2);font-size:14px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 返回顶部 */
.back-top{
  position:fixed;
  right:20px;bottom:24px;
  width:46px;height:46px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(10,16,28,.86);
  color:var(--text-1);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s,border-color .24s var(--ease);
  z-index:1020;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:var(--brand);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:64px 0 28px;
  margin-top:var(--sp-8);
}
.foot-brand{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--text-1);
  margin-bottom:14px;
}
.foot-desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.9;
  max-width:340px;
}
.foot-title{
  font-size:14px;
  color:var(--text-2);
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.foot-links li+li{margin-top:10px;}
.foot-links a,.foot-info li{
  font-size:14px;
  color:var(--text-1);
  line-height:1.7;
}
.foot-info li+li{margin-top:10px;}
.foot-info li{color:var(--text-2);}
.foot-links a:hover{color:var(--brand);}
.foot-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 断点 ============ */
@media (max-width:1399.98px){
  .container-x{max-width:1200px;}
}
@media (max-width:1199.98px){
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-side{display:none;}
  .step-flow{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991.98px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:52px;padding:0 8px 0 12px;}
  .cat-hero{padding:120px 0 48px;}
  .cat-hero h1{font-size:32px;}
  .block-head h2{font-size:24px;}
  .page-main{padding:64px 0 72px;}
  .visitor-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:767.98px){
  .container-x{padding:0 18px;}
  .hcard{grid-template-columns:minmax(0,1fr);gap:16px;padding:20px 0;}
  .hcard-img{aspect-ratio:16/9;}
  .line-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px 12px;}
  .line-meta{grid-column:2;white-space:normal;}
  .line-num{font-size:22px;}
  .step-flow{grid-template-columns:minmax(0,1fr);}
  .cta-panel{padding:28px 22px;}
  .cta-panel h2{font-size:22px;}
  .cat-hero h1{font-size:26px;}
}
@media (max-width:575.98px){
  .nav-logo{white-space:normal;font-size:13px;line-height:1.25;}
  .nav-logo .nav-logo-text{max-width:120px;}
  .cat-hero{padding:104px 0 40px;}
  .cat-hero h1{font-size:24px;}
  .block-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .block-head .hint{white-space:normal;}
  .btn-main,.btn-ghost{width:100%;}
  .cta-actions{width:100%;}
  .faq-block .accordion-button{font-size:15px;padding:18px 40px 18px 0;}
  .faq-block .accordion-body{padding:0 40px 20px 0;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --brand:#2F6BFF;
  --brand-deep:#1B47C4;
  --accent:#2EE6C5;
  --hot:#FF7A45;
  --text-1:#EAF0FF;
  --text-2:#9FB0CC;
  --text-3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);
  --sh-2:0 12px 32px rgba(0,0,0,.36);
  --glow:0 0 18px rgba(47,107,255,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;

  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:18px;
  --bs-border-radius-lg:18px;
  --bs-border-radius-sm:8px;
  --bs-link-color:#EAF0FF;
  --bs-link-hover-color:#2EE6C5;
  --bs-link-decoration:none;
  --bs-secondary-color:#9FB0CC;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:64px 64px;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:system-ui,"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.container-x{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (max-width:1399.98px){.container-x{max-width:1140px;}}
@media (max-width:1199.98px){.container-x{max-width:960px;}}
@media (max-width:991.98px){.container-x{max-width:720px;padding:0 20px;}}
@media (max-width:767.98px){.container-x{max-width:100%;padding:0 16px;}}

/* ============ 悬浮胶囊导航 ============ */
.site-capsule-nav{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:calc(100% - 32px);
  max-width:1160px;
  z-index:1030;
  border-radius:var(--r-pill);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-capsule-nav.is-scrolled{
  background:rgba(8,13,24,.9);
  border-color:var(--line-strong);
  box-shadow:var(--sh-2);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:14px;
  height:60px;
  padding:0 10px 0 20px;
}
.nav-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--text-1);
  flex-shrink:0;
}
.brand-mark{
  width:28px;height:28px;
  border-radius:9px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  color:#04101F;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:0 0 14px rgba(46,230,197,.28);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-links .nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-links .nav-link.active{color:var(--text-1);}
.nav-links .nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:0 0 10px rgba(47,107,255,.6);
}
.nav-cta{margin-left:8px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:1029;
  background:rgba(6,10,19,.97);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  padding:96px 24px 40px;
  display:none;
  overflow-y:auto;
}
.nav-drawer.is-open{display:block;}
.nav-drawer .drawer-title{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-3);
  margin:0 0 14px;
}
.nav-drawer .drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:28px;}
.nav-drawer .drawer-links a{
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:14px;
  font-size:16px;
  color:var(--text-2);
  background:rgba(255,255,255,.02);
}
.nav-drawer .drawer-links a:hover{color:var(--text-1);border-color:var(--line-strong);}
.nav-drawer .drawer-links a.active{color:var(--text-1);border-color:rgba(47,107,255,.5);background:rgba(47,107,255,.1);}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary-x{
  background:linear-gradient(90deg,var(--brand-deep),var(--brand));
  color:#FFFFFF;
  box-shadow:var(--glow);
}
.btn-primary-x:hover{transform:translateY(-2px);box-shadow:0 0 26px rgba(47,107,255,.5);color:#fff;}
.btn-primary-x:active{transform:translateY(0);filter:brightness(.94);}
.btn-outline-x{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-outline-x:hover{transform:translateY(-2px);border-color:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-outline-x:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost-x{
  height:auto;
  padding:0;
  color:var(--accent);
  font-weight:600;
  font-size:14px;
  background:none;
}
.btn-ghost-x i{transition:transform .22s var(--ease);}
.btn-ghost-x:hover i{transform:translateX(4px);}
.btn-x[disabled]{opacity:.4;pointer-events:none;}
.link-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
}
.link-ghost i,.link-ghost span{transition:transform .22s var(--ease);}
.link-ghost:hover span{transform:translateX(4px);}

/* ============ 分类页首屏 Banner ============ */
.cat-hero{
  position:relative;
  padding:154px 0 76px;
  background-image:
    linear-gradient(115deg,rgba(7,12,22,.95) 0%,rgba(7,12,22,.78) 42%,rgba(15,26,46,.9) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,.5),transparent);
}
.breadcrumb-custom{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb-custom a{color:var(--text-2);}
.breadcrumb-custom a:hover{color:var(--accent);}
.breadcrumb-custom .sep{opacity:.5;}
.breadcrumb-custom .cur{color:var(--accent);}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:16px;
}
.hero-eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--accent);
  display:inline-block;
}
.cat-hero h1{
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.cat-hero h1 .hl{
  background:linear-gradient(90deg,var(--brand),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  padding:5px 12px;
  border-radius:8px;
  background:rgba(47,107,255,.12);
  color:#9DC0FF;
  border:1px solid rgba(47,107,255,.18);
}
.tag.accent{background:rgba(46,230,197,.1);color:var(--accent);border-color:rgba(46,230,197,.2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-visual{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-2);
  aspect-ratio:4/5;
  background:var(--bg-1);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual .visual-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.05) 0%,rgba(7,12,22,.35) 55%,rgba(7,12,22,.9) 100%);
}
.hero-visual .visual-top{
  position:absolute;
  top:16px;left:16px;
  display:flex;gap:8px;
}
.chip-dur{
  font-size:12px;
  font-weight:600;
  padding:4px 10px;
  border-radius:8px;
  background:rgba(255,122,69,.16);
  color:#FFB08A;
  border:1px solid rgba(255,122,69,.3);
}
.chip-plain{
  font-size:12px;
  font-weight:600;
  padding:4px 10px;
  border-radius:8px;
  background:rgba(7,12,22,.6);
  color:var(--text-2);
  border:1px solid var(--line);
}
.hero-visual .visual-bottom{
  position:absolute;
  left:18px;right:18px;bottom:18px;
}
.hero-visual .visual-bottom h3{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:8px;
}
.hero-visual .visual-meta{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:12px;
  color:var(--text-2);
}
.scan-line{
  position:absolute;
  left:0;right:0;top:38%;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,.75),transparent);
  opacity:.7;
  animation:scanMove 6s var(--ease) infinite;
}
@keyframes scanMove{
  0%{transform:translateY(-70px);opacity:0;}
  35%{opacity:.8;}
  100%{transform:translateY(150px);opacity:0;}
}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  margin-top:-40px;
  position:relative;
  z-index:3;
}
.stat-cell{
  background:var(--bg-1);
  padding:26px 24px;
  transition:background .25s var(--ease);
}
.stat-cell:hover{background:var(--bg-2);}
.stat-num{
  font-size:28px;
  font-weight:700;
  line-height:1.2;
  color:var(--accent);
  margin-bottom:6px;
  letter-spacing:.01em;
}
.stat-label{font-size:14px;color:var(--text-1);font-weight:600;margin-bottom:4px;}
.stat-desc{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-alt{background:linear-gradient(180deg,rgba(11,18,32,0) 0%,rgba(11,18,32,.85) 22%,rgba(11,18,32,.85) 78%,rgba(11,18,32,0) 100%);}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.sec-head .sec-title-wrap{max-width:640px;}
.sec-kicker{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-3);
  margin-bottom:10px;
}
.sec-head h2{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:10px;
}
.sec-head h2::after{
  content:"";
  display:block;
  width:44px;height:3px;
  border-radius:3px;
  margin-top:14px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.sec-head p{font-size:15px;color:var(--text-2);line-height:1.85;}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:10px;bottom:10px;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--line-strong) 10%,var(--line-strong) 90%,transparent);
}
.tl-item{
  position:relative;
  padding-left:64px;
  margin-bottom:24px;
}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;
  left:8px;top:20px;
  width:24px;height:24px;
  border-radius:50%;
  background:var(--bg-0);
  border:1px solid rgba(47,107,255,.55);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  font-weight:700;
  color:var(--accent);
  box-shadow:0 0 0 4px rgba(7,12,22,.9);
  z-index:2;
}
.tl-card{
  display:grid;
  grid-template-columns:168px 1fr;
  gap:22px;
  padding:18px;
  border-radius:var(--r-card);
  background:var(--bg-1);
  border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.tl-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--sh-2);
}
.tl-thumb{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-2);
}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.tl-card:hover .tl-thumb img{transform:scale(1.04);}
.tl-body{display:flex;flex-direction:column;gap:10px;}
.tl-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--text-3);
}
.tl-body h3{font-size:19px;font-weight:700;line-height:1.45;}
.tl-body p{font-size:14px;color:var(--text-2);line-height:1.85;}
.tl-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:2px;}
.tl-meta{font-size:12px;color:var(--text-3);}

/* ============ 横滚精选轨 ============ */
.rail-outer{position:relative;}
.rail{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding:4px 16px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 246px;
  scroll-snap-align:start;
  border-radius:16px;
  overflow:hidden;
  background:var(--bg-1);
  border:1px solid var(--line);
  position:relative;
  display:flex;
  flex-direction:column;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rail-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.rail-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.rail-cover{
  position:relative;
  aspect-ratio:3/4;
  background:var(--bg-2);
  overflow:hidden;
}
.rail-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.rail-card:hover .rail-cover img{transform:scale(1.03);}
.rail-cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.05) 40%,rgba(7,12,22,.8) 100%);
}
.rail-dur{
  position:absolute;
  top:12px;right:12px;
  z-index:2;
  font-size:12px;
  font-weight:700;
  padding:3px 8px;
  border-radius:8px;
  background:rgba(255,122,69,.9);
  color:#1A0C05;
}
.rail-info{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rail-info h3{font-size:15px;font-weight:600;line-height:1.55;min-height:46px;}
.rail-tags{display:flex;flex-wrap:wrap;gap:6px;}
.rail-tags .tag{font-size:11px;padding:3px 9px;}
.rail-foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);
  margin-top:auto;
  padding-top:10px;
  border-top:1px solid var(--line);
}

/* ============ 图文主题块 ============ */
.feature-row{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:44px;
  align-items:center;
  padding:32px 0;
}
.feature-row.reverse{grid-template-columns:.88fr 1.12fr;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-text{order:1;}
.feature-media{
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/11;
  background:var(--bg-1);
  position:relative;
  box-shadow:var(--sh-1);
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-media .media-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,0) 45%,rgba(7,12,22,.7) 100%);
}
.feature-text h3{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:14px;}
.feature-text p{font-size:15px;color:var(--text-2);line-height:1.9;margin-bottom:18px;}
.rate-row{display:flex;align-items:center;gap:14px;margin-bottom:12px;}
.rate-label{font-size:13px;color:var(--text-3);white-space:nowrap;}
.rate-bar{
  flex:1;
  height:6px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.rate-bar span{
  display:block;height:100%;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.rate-val{font-size:13px;color:var(--accent);font-weight:700;}
.feature-meta{
  display:flex;flex-wrap:wrap;gap:18px;
  font-size:13px;color:var(--text-3);
  border-top:1px solid var(--line);
  padding-top:16px;
}
.feature-meta strong{color:var(--text-1);font-weight:600;}

/* ============ FAQ ============ */
.faq-accordion{max-width:900px;margin:0 auto;}
.faq-accordion .accordion-item{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  margin-bottom:12px;
  transition:border-color .25s var(--ease);
}
.faq-accordion .accordion-item:last-child{margin-bottom:0;}
.faq-accordion .accordion-item:hover{border-color:var(--line-strong);}
.faq-accordion .accordion-button{
  position:relative;
  width:100%;
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  padding:20px 58px 20px 22px;
  text-align:left;
  border:0;
  box-shadow:none;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--accent);
  background:rgba(47,107,255,.06);
}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-accordion .accordion-button::after{display:none;}
.faq-accordion .accordion-button::before{
  content:"+";
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  line-height:1;
  color:var(--accent);
  font-weight:400;
  transition:transform .25s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::before{content:"–";}
.faq-accordion .accordion-body{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:40px 44px;
  border-radius:24px;
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg,var(--bg-2) 0%,rgba(27,71,196,.32) 100%);
  box-shadow:var(--sh-2);
  flex-wrap:wrap;
}
.cta-bar h2{
  font-size:26px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:10px;
}
.cta-bar p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:88px;
  padding:64px 0 28px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,18,32,.6) 0%,rgba(7,12,22,.98) 100%);
}
.foot-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  margin-bottom:14px;
}
.foot-desc{font-size:14px;color:var(--text-2);line-height:1.9;max-width:340px;}
.foot-title{
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.foot-links,.foot-info{display:flex;flex-direction:column;gap:10px;}
.foot-links a,.foot-info li{font-size:14px;color:var(--text-1);line-height:1.6;}
.foot-links a:hover{color:var(--brand);}
.foot-info li{color:var(--text-2);}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(12,20,34,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--text-1);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),box-shadow .25s var(--ease);
  z-index:1040;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{box-shadow:var(--glow);border-color:var(--brand);}

/* ============ Bootstrap 组件重塑 ============ */
.btn{
  --bs-btn-border-radius:999px;
  border-radius:var(--r-pill);
  font-weight:600;
  padding:.62rem 1.4rem;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.btn-primary{
  --bs-btn-bg:#2F6BFF;
  --bs-btn-border-color:#2F6BFF;
  --bs-btn-hover-bg:#1B47C4;
  --bs-btn-hover-border-color:#1B47C4;
  --bs-btn-active-bg:#1B47C4;
  --bs-btn-color:#FFFFFF;
  box-shadow:var(--sh-1);
}
.card{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  color:var(--text-1);
}
.badge{
  background:rgba(47,107,255,.14);
  color:#9DC0FF;
  border-radius:8px;
  font-weight:600;
  padding:.42em .72em;
  letter-spacing:.02em;
}
.navbar{
  background:var(--glass) !important;
  border-bottom:1px solid var(--line);
  padding:.6rem 0;
}
.navbar .nav-link{color:var(--text-2);border-radius:var(--r-pill);padding:.4rem .9rem;}
.navbar .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.table{
  --bs-table-bg:transparent;
  --bs-table-color:var(--text-1);
  --bs-table-border-color:var(--line);
  color:var(--text-1);
  border-radius:14px;
  overflow:hidden;
}
.table > thead th{background:var(--bg-2);border-color:var(--line);font-weight:600;}
.table > tbody tr:nth-child(even){background:rgba(255,255,255,.04);}
.pagination{--bs-pagination-bg:transparent;--bs-pagination-color:var(--text-2);--bs-pagination-border-color:var(--line);}
.pagination .page-link{border-radius:var(--r-pill);margin:0 4px;background:transparent;color:var(--text-2);}
.pagination .page-link:hover{background:rgba(47,107,255,.14);color:var(--text-1);border-color:var(--line-strong);}
.pagination .page-item.active .page-link{background:linear-gradient(90deg,var(--brand-deep),var(--brand));color:#fff;border-color:transparent;}
.form-control,.form-select{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:14px;
  color:var(--text-1);
  height:48px;
  padding:0 16px;
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus,.form-select:focus{
  background:var(--bg-1);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,107,255,.22);
  color:var(--text-1);
}
.dropdown-menu{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh-2);
}
.dropdown-item{color:var(--text-2);border-radius:10px;}
.dropdown-item:hover{background:rgba(47,107,255,.14);color:var(--text-1);}
.modal-content{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:18px;
  color:var(--text-1);
}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--line);}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .cat-hero h1{font-size:36px;}
}
@media (max-width:1199.98px){
  .hero-grid{gap:36px;}
  .cat-hero{padding:140px 0 68px;}
  .section{padding:76px 0;}
  .feature-row{gap:32px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:56px;padding:0 8px 0 16px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{aspect-ratio:16/11;max-width:560px;width:100%;}
  .cat-hero{padding:128px 0 60px;}
  .cat-hero h1{font-size:32px;}
  .stat-strip{grid-template-columns:1fr;margin-top:-28px;}
  .section{padding:64px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .sec-head h2{font-size:24px;}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;}
  .feature-row.reverse .feature-media{order:1;}
  .feature-row.reverse .feature-text{order:2;}
  .tl-card{grid-template-columns:1fr;gap:16px;}
  .tl-thumb{aspect-ratio:16/9;}
  .cta-bar{padding:32px 28px;}
  .cta-bar h2{font-size:22px;}
  .site-footer{margin-top:64px;padding-top:48px;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .cat-hero{padding:116px 0 52px;}
  .cat-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .btn-x{height:42px;padding:0 18px;font-size:14px;}
  .section{padding:48px 0;}
  .sec-head h2{font-size:20px;}
  .stat-num{font-size:24px;}
  .tl-item{padding-left:52px;}
  .timeline::before{left:15px;}
  .tl-dot{left:4px;width:22px;height:22px;font-size:10px;}
  .rail-card{flex:0 0 200px;}
  .cta-bar{padding:26px 20px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-x{flex:1;}
  .feature-text h3{font-size:19px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .back-top{right:16px;bottom:16px;width:42px;height:42px;}
}
@media (max-width:575.98px){
  .brand-text{font-size:13px;line-height:1.2;max-width:118px;}
  .cat-hero h1{font-size:24px;}
  .rail-card{flex:0 0 168px;}
  .rail-cover{aspect-ratio:4/5;}
  .rail-info{padding:12px;}
  .hero-tags{gap:8px;}
  .tag{font-size:11px;padding:4px 9px;}
  .stat-cell{padding:20px 18px;}
  .foot-desc{max-width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category4 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --brand:#2F6BFF;
  --brand-deep:#1B47C4;
  --accent:#2EE6C5;
  --hot:#FF7A45;
  --text-1:#EAF0FF;
  --text-2:#9FB0CC;
  --text-3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;
  --r-img:14px;
  --r-input:14px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);
  --sh-2:0 12px 32px rgba(0,0,0,.36);
  --sh-glow:0 0 18px rgba(47,107,255,.35);
  --sp-4:4px;--sp-8:8px;--sp-12:12px;--sp-16:16px;--sp-24:24px;--sp-32:32px;--sp-48:48px;--sp-64:64px;--sp-96:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2F6BFF;
  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:18px;
  --bs-link-color:#2F6BFF;
  --bs-link-hover-color:#2EE6C5;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-1);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
.num{font-family:system-ui,Inter,"Segoe UI",sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 悬浮胶囊导航 ============ */
.site-capsule-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:calc(100% - 32px);max-width:1160px;z-index:1040;
  background:rgba(10,16,28,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-capsule-nav.scrolled{background:rgba(7,12,22,.9);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.nav-inner{display:flex;align-items:center;gap:18px;height:60px;padding:0 10px 0 18px;}
.nav-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 14px rgba(47,107,255,.4);
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 13px;border-radius:999px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:0 0 10px rgba(47,107,255,.55);
}
.nav-cta{
  flex:0 0 auto;height:40px;display:inline-flex;align-items:center;
  padding:0 20px;border-radius:999px;font-size:14px;font-weight:600;
  color:#04101F;background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);transition:transform .22s var(--ease),filter .22s var(--ease);
}
.nav-cta:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.06);}
.nav-cta:active{transform:translateY(0);filter:brightness(.94);}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-1);font-size:17px;line-height:1;
}
.nav-drawer{
  display:none;border-top:1px solid var(--line);padding:14px 18px 20px;
}
.nav-drawer.open{display:block;}
.nav-drawer .nav-link{display:block;padding:13px 12px;border-radius:12px;font-size:15px;}
.nav-drawer .nav-cta{width:100%;justify-content:center;margin-top:12px;height:44px;}

/* ============ 分类页 Banner ============ */
.cat-hero{
  position:relative;padding:150px 0 68px;overflow:hidden;
  background:
    linear-gradient(135deg,rgba(7,12,22,.94) 0%,rgba(11,18,32,.86) 45%,rgba(15,26,46,.72) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
}
.cat-hero .container-x{position:relative;z-index:2;}
.breadcrumb-custom{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb-custom a{color:var(--text-2);}
.breadcrumb-custom a:hover{color:var(--accent);}
.breadcrumb-custom .sep{color:var(--text-3);}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;color:var(--accent);
  background:rgba(46,230,197,.1);border:1px solid rgba(46,230,197,.24);margin-bottom:18px;
}
.cat-hero h1{
  font-size:40px;line-height:1.25;font-weight:700;letter-spacing:.02em;margin:0 0 16px;max-width:900px;
}
.cat-hero h1 em{font-style:normal;color:var(--accent);}
.cat-hero p{font-size:16px;color:var(--text-2);max-width:720px;margin:0 0 26px;line-height:1.8;}
.cat-meta{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:8px;
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.chip b{color:var(--text-1);font-weight:600;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px;}
.sec-head h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:.02em;margin:0 0 10px;}
.sec-head p{margin:0;color:var(--text-2);font-size:15px;max-width:640px;}
.sec-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.sec-head .more:hover{color:var(--accent);}

/* ============ 筛选胶囊 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--text-2);background:rgba(255,255,255,.03);
  border:1px solid var(--line);cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.pill:hover{color:var(--text-1);border-color:var(--line-strong);transform:translateY(-2px);}
.pill.on{color:#04101F;font-weight:600;background:linear-gradient(90deg,var(--brand),var(--accent));border-color:transparent;box-shadow:var(--sh-glow);}
.pill.on:hover{color:#04101F;}

/* ============ 对比表 ============ */
.table-shell{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-1);
  overflow:hidden;box-shadow:var(--sh-1);
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.qa-table{width:100%;min-width:940px;border-collapse:collapse;font-size:15px;}
.qa-table thead th{
  background:#0A101C;color:var(--text-2);font-size:12px;font-weight:600;letter-spacing:.1em;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--line-strong);white-space:nowrap;
}
.qa-table tbody td{padding:20px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:top;line-height:1.75;}
.qa-table tbody tr:nth-child(even){background:rgba(255,255,255,.04);}
.qa-table tbody tr:hover{background:rgba(47,107,255,.08);}
.qa-table tbody tr:last-child td{border-bottom:none;}
.qa-table .col-rank{width:96px;}
.qa-table .col-topic{width:230px;}
.qa-table .col-topic strong{color:var(--text-1);font-size:15px;font-weight:600;display:block;}
.qa-table .col-topic span{font-size:12px;color:var(--text-3);}
.qa-table .col-link{width:190px;white-space:nowrap;}
.qa-table .col-link a{color:var(--brand);font-size:14px;}
.qa-table .col-link a:hover{color:var(--accent);}
.rank-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;font-weight:700;font-size:15px;
  color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.rank-badge.top{color:#04101F;border-color:transparent;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:var(--sh-glow);}
.rank-badge.hot{color:#1A0A02;border-color:transparent;background:linear-gradient(135deg,var(--hot),#FFB27A);}
.scroll-hint{display:none;margin-top:12px;font-size:13px;color:var(--text-3);}

/* ============ 对比卡 ============ */
.cmp-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.cmp-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.cmp-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);}
.cmp-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.cmp-card:hover .thumb img{transform:scale(1.04);}
.cmp-card .thumb .tag{
  position:absolute;left:14px;top:14px;height:26px;display:inline-flex;align-items:center;padding:0 11px;
  border-radius:8px;font-size:12px;color:var(--accent);background:rgba(7,12,22,.72);
  border:1px solid rgba(46,230,197,.3);backdrop-filter:blur(6px);
}
.cmp-card .body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cmp-card h3{font-size:19px;line-height:1.4;font-weight:600;margin:0;letter-spacing:.02em;}
.cmp-card p{margin:0;color:var(--text-2);font-size:14px;line-height:1.75;}
.cmp-card .facts{list-style:none;padding:0;margin:0;display:grid;gap:8px;}
.cmp-card .facts li{display:flex;gap:9px;font-size:13.5px;color:var(--text-2);line-height:1.6;}
.cmp-card .facts li i{color:var(--accent);font-style:normal;line-height:1.6;}
.cmp-card .foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.cmp-card .foot .time{font-size:12px;color:var(--text-3);}

/* ============ 深度解读 ============ */
.insight{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.insight .pic{border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:5/4;background:var(--bg-2);}
.insight .pic img{width:100%;height:100%;object-fit:cover;}
.insight h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:.02em;margin:0 0 16px;}
.insight .lead{color:var(--text-2);font-size:15.5px;line-height:1.85;margin:0 0 22px;}
.step-list{list-style:none;padding:0;margin:0;display:grid;gap:16px;}
.step-list li{display:flex;gap:14px;align-items:flex-start;}
.step-list .ord{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);background:rgba(46,230,197,.09);border:1px solid rgba(46,230,197,.24);
}
.step-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--text-1);margin-bottom:4px;}
.step-list span{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ FAQ ============ */
.faq-block{max-width:960px;margin:0 auto;}
.accordion-item{
  background:transparent;border:1px solid var(--line);border-radius:16px!important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-strong);}
.accordion-button{
  background:var(--bg-1);color:var(--text-1);font-size:16px;font-weight:600;
  padding:20px 22px;box-shadow:none!important;border-radius:16px!important;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.accordion-button:focus{box-shadow:none!important;border-color:var(--line-strong);}
.accordion-button:not(.collapsed){background:rgba(47,107,255,.09);color:var(--accent);}
.accordion-button::after{
  content:"";background-image:none!important;width:11px;height:11px;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);margin-left:auto;transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--accent);}
.accordion-body{background:rgba(11,18,32,.6);color:var(--text-2);font-size:14.5px;line-height:1.85;padding:6px 22px 22px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(15,26,46,.96),rgba(11,18,32,.96));
  padding:52px 48px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,107,255,.32),transparent 68%);pointer-events:none;
}
.cta-band h2{font-size:28px;line-height:1.3;font-weight:700;margin:0 0 10px;position:relative;letter-spacing:.02em;}
.cta-band p{margin:0;color:var(--text-2);font-size:15px;max-width:560px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:none;
  font-size:15px;font-weight:700;color:#04101F;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);cursor:pointer;
  transition:transform .22s var(--ease),filter .22s var(--ease);
}
.btn-main:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.06);}
.btn-main:active{transform:translateY(0);filter:brightness(.92);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text-1);
  background:transparent;border:1px solid var(--line-strong);cursor:pointer;
  transition:transform .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);opacity:.9;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.link-arrow:hover{color:var(--accent);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px;}
.foot-desc{color:var(--text-2);font-size:14px;line-height:1.8;margin:0;max-width:320px;}
.foot-title{font-size:14px;color:var(--text-2);font-weight:600;margin-bottom:16px;letter-spacing:.04em;}
.foot-links,.foot-info{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.foot-links a{font-size:14px;color:var(--text-1);}
.foot-links a:hover{color:var(--brand);}
.foot-info li{font-size:14px;color:var(--text-3);}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.to-top{
  position:fixed;right:22px;bottom:24px;width:46px;height:46px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  color:var(--text-1);background:rgba(12,20,34,.86);border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  z-index:1030;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--sh-glow);}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .container-x{max-width:1140px;}
}
@media (max-width:1199px){
  .container-x{max-width:960px;}
  .cat-hero h1{font-size:34px;}
  .section{padding:72px 0;}
  .insight{gap:32px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .nav-inner{height:54px;padding:0 8px 0 14px;}
  .cat-hero{padding:124px 0 56px;}
  .cat-hero h1{font-size:30px;}
  .section{padding:64px 0;}
  .insight{grid-template-columns:1fr;}
  .insight .pic{order:-1;aspect-ratio:16/10;}
  .cta-band{padding:40px 28px;}
  .scroll-hint{display:block;}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .nav-inner{gap:10px;}
  .brand-mark{width:28px;height:28px;font-size:14px;}
  .brand-text{font-size:14px;}
  .cat-hero{padding:112px 0 46px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero p{font-size:15px;}
  .sec-head h2{font-size:23px;}
  .section{padding:52px 0;}
  .cmp-card h3{font-size:17px;}
  .cta-band{border-radius:20px;padding:32px 22px;}
  .cta-band h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{flex:1 1 100%;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:575px){
  .cat-hero h1{font-size:23px;}
  .cat-eyebrow{font-size:11px;padding:0 11px;}
  .filter-bar{gap:8px;}
  .pill{height:34px;padding:0 14px;font-size:13px;}
  .insight h2,.cta-band h2{font-size:21px;}
  .sec-head h2{font-size:20px;}
  .brand-text{white-space:normal;line-height:1.2;max-width:150px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category5 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --brand:#2F6BFF;
  --brand-deep:#1B47C4;
  --accent:#2EE6C5;
  --hot:#FF7A45;
  --text-1:#EAF0FF;
  --text-2:#9FB0CC;
  --text-3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(12,20,34,.72);
  --r-card:18px;
  --r-img:14px;
  --r-btn:999px;
  --r-badge:8px;
  --sh-1:0 2px 8px rgba(0,0,0,.24);
  --sh-2:0 12px 32px rgba(0,0,0,.36);
  --sh-glow:0 0 18px rgba(47,107,255,.35);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#070C16;
  --bs-body-color:#EAF0FF;
  --bs-primary:#2F6BFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:18px;
  --bs-link-color:#2F6BFF;
  --bs-link-hover-color:#2EE6C5;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-1);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;position:relative;}
.section-alt{background:var(--bg-1);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);letter-spacing:.08em;margin-bottom:12px;}
.sec-kicker::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}
.sec-title{font-size:28px;margin-bottom:12px;}
.sec-sub{color:var(--text-2);font-size:15px;}

/* ============ 悬浮胶囊导航 ============ */
.site-capsule-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:calc(100% - 32px);max-width:1160px;z-index:1040;
}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  height:60px;padding:0 10px 0 18px;
  background:rgba(10,16,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--sh-1);
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-capsule-nav.is-scrolled .nav-shell{
  background:rgba(8,13,24,.92);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:16px;letter-spacing:.02em;white-space:nowrap;
  color:var(--text-1);
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;font-weight:700;font-size:15px;
  box-shadow:var(--sh-glow);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:999px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:0 0 10px rgba(47,107,255,.7);
}
.nav-cta{
  flex:0 0 auto;height:40px;padding:0 18px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:#04101F;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:var(--sh-glow);
  border:0;transition:transform .22s var(--ease),filter .22s var(--ease);
}
.nav-cta:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.06);}
.nav-cta:active{transform:translateY(0);filter:brightness(.94);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-1);align-items:center;justify-content:center;font-size:16px;
}
.nav-drawer{
  display:none;margin-top:10px;background:rgba(8,13,24,.97);
  border:1px solid var(--line);border-radius:22px;overflow:hidden;
  backdrop-filter:blur(14px);box-shadow:var(--sh-2);
}
.nav-drawer.open{display:block;}
.nav-drawer a{
  display:block;padding:14px 20px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.nav-drawer a:last-child{border-bottom:0;}
.nav-drawer a.active{color:var(--accent);background:rgba(47,107,255,.08);}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:0;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary-x{background:linear-gradient(90deg,var(--brand),var(--accent));color:#04101F;box-shadow:var(--sh-glow);}
.btn-primary-x:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.06);}
.btn-primary-x:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost-x{background:transparent;color:var(--text-1);border:1px solid var(--line-strong);}
.btn-ghost-x:hover{color:var(--text-1);border-color:var(--brand);transform:translateY(-2px);}
.btn-ghost-x:active{transform:translateY(0);filter:brightness(.94);}
.btn-sm-x{height:38px;padding:0 18px;font-size:14px;}
.btn-x:disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ============ 分类页 Banner ============ */
.cat-hero{
  position:relative;padding:150px 0 76px;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(7,12,22,.94) 0%,rgba(11,18,32,.72) 55%,rgba(15,26,46,.55) 100%),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
}
.cat-hero .container-x{position:relative;z-index:2;}
.breadcrumb-custom{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb-custom a{color:var(--text-2);}
.breadcrumb-custom a:hover{color:var(--accent);}
.breadcrumb-custom span.sep{color:var(--text-3);}
.cat-hero h1{font-size:40px;max-width:16em;}
.cat-hero h1 .hl{background:linear-gradient(90deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.cat-hero .lead{color:var(--text-2);font-size:16px;max-width:640px;margin-top:16px;}
.cat-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-btn);
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.chip i{color:var(--accent);font-size:12px;}

/* ============ 图集网格（瀑布式） ============ */
.gallery-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.g-item{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--bg-2);box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.g-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.g-item:hover img{transform:scale(1.02);}
.g-item .g-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,.45) 60%,transparent);
}
.g-item .g-cap h3{font-size:16px;margin-bottom:4px;}
.g-item .g-cap p{font-size:13px;color:var(--text-2);}
.g-item.tall{grid-row:span 2;}
.g-item.tall img{aspect-ratio:3/4.2;}
.g-item.norm img{aspect-ratio:16/11;}
.g-item.wide{grid-column:span 2;}
.g-item.wide img{aspect-ratio:21/9;}
.g-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;color:#04101F;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.img-skeleton{background:linear-gradient(100deg,var(--bg-2) 30%,rgba(255,255,255,.06) 50%,var(--bg-2) 70%);background-size:200% 100%;animation:sk 1.4s infinite linear;}
@keyframes sk{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* ============ 步骤流 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  position:relative;padding:28px 24px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(15,26,46,.9),rgba(11,18,32,.9));
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.step-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.step-num{
  font-size:34px;font-weight:700;line-height:1;
  background:linear-gradient(180deg,var(--accent),var(--brand));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.step-card h3{font-size:19px;margin:14px 0 10px;}
.step-card p{color:var(--text-2);font-size:14px;}
.step-line{position:absolute;top:38px;right:-14px;width:28px;height:1px;background:var(--line-strong);}
.step-card:last-child .step-line{display:none;}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);position:relative;
}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split-body h2{font-size:26px;margin-bottom:16px;}
.split-body p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.feat-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-1);
}
.feat-list li:last-child{border-bottom:0;}
.feat-list i{color:var(--accent);margin-top:6px;font-size:13px;}
.feat-list span small{display:block;color:var(--text-3);font-size:13px;margin-top:2px;}

/* ============ FAQ ============ */
.faq-block{max-width:900px;margin:0 auto;}
.accordion-x .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);
}
.accordion-x .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-x .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;padding:22px 44px 22px 0;
  box-shadow:none;border-radius:0;position:relative;
}
.accordion-x .accordion-button::after{display:none;}
.accordion-x .accordion-button .faq-ico{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:999px;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;color:var(--text-2);
  transition:transform .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.accordion-x .accordion-button:not(.collapsed){color:var(--brand);}
.accordion-x .accordion-button:not(.collapsed) .faq-ico{transform:translateY(-50%) rotate(45deg);color:var(--brand);border-color:var(--brand);}
.accordion-x .accordion-button:focus{box-shadow:none;outline:none;}
.accordion-x .accordion-body{padding:0 44px 24px 0;color:var(--text-2);font-size:15px;}

/* ============ 表单 ============ */
.form-panel{
  border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(15,26,46,.92),rgba(11,18,32,.92));
  padding:32px;box-shadow:var(--sh-2);
}
.form-label-x{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.form-control, .form-control-x{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-img);
  background:var(--bg-1);border:1px solid var(--line);color:var(--text-1);
  font-size:15px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
textarea.form-control-x{height:auto;padding:14px 16px;resize:vertical;min-height:120px;line-height:1.7;}
.form-control-x::placeholder{color:var(--text-3);}
.form-control-x:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.18);}
.form-control-x.is-error{border-color:var(--hot);}
.err-msg{display:none;font-size:13px;color:var(--hot);margin-top:6px;}
.err-msg.show{display:block;}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px;}
.form-ok{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-img);
  border:1px solid rgba(46,230,197,.35);background:rgba(46,230,197,.08);
  color:var(--accent);font-size:14px;
}
.form-ok.show{display:block;}

/* ============ CTA 条 ============ */
.cta-bar{
  border-radius:22px;padding:40px;display:flex;align-items:center;gap:32px;
  background:linear-gradient(100deg,rgba(27,71,196,.35),rgba(15,26,46,.9) 55%,rgba(46,230,197,.16));
  border:1px solid var(--line-strong);box-shadow:var(--sh-2);
}
.cta-bar h2{font-size:26px;margin-bottom:10px;}
.cta-bar p{color:var(--text-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-left:auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);
  padding:64px 0 28px;margin-top:0;
}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:14px;}
.foot-desc{color:var(--text-2);font-size:14px;max-width:340px;}
.foot-title{font-size:14px;color:var(--text-2);font-weight:600;margin-bottom:16px;letter-spacing:.04em;}
.foot-links li, .foot-info li{margin-bottom:10px;font-size:14px;}
.foot-links a, .foot-info li{color:var(--text-1);}
.foot-info li{color:var(--text-2);}
.foot-links a:hover{color:var(--brand);}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:20px;bottom:24px;z-index:1030;
  width:46px;height:46px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(10,16,28,.85);backdrop-filter:blur(10px);
  color:var(--text-1);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{transform:translateY(-2px);border-color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .container-x{max-width:1140px;}
  .cat-hero h1{font-size:36px;}
}
@media (max-width:1199.98px){
  .container-x{max-width:960px;}
  .gallery-grid{grid-template-columns:repeat(3,1fr);}
  .g-item.wide{grid-column:span 2;}
  .section{padding:72px 0;}
}
@media (max-width:991.98px){
  .container-x{max-width:720px;padding:0 20px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
  .nav-shell{height:56px;padding:0 12px 0 16px;}
  .brand{font-size:15px;}
  .cat-hero{padding:130px 0 60px;}
  .cat-hero h1{font-size:32px;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .g-item.tall{grid-row:span 1;}
  .g-item.tall img{aspect-ratio:16/11;}
  .g-item.wide{grid-column:span 2;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .step-line{display:none;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:30px;}
  .cta-actions{margin-left:0;}
  .section{padding:64px 0;}
}
@media (max-width:767.98px){
  .cat-hero h1{font-size:28px;}
  .sec-title{font-size:24px;}
  .split-body h2{font-size:22px;}
  .cta-bar h2{font-size:22px;}
  .form-panel{padding:22px;}
  .foot-bottom{flex-direction:column;}
  .back-top{right:14px;bottom:16px;}
}
@media (max-width:575.98px){
  .cat-hero{padding:112px 0 48px;}
  .cat-hero h1{font-size:23px;line-height:1.35;}
  .brand{white-space:normal;line-height:1.2;font-size:14px;max-width:170px;}
  .nav-shell{height:auto;min-height:56px;padding:10px 12px;border-radius:26px;}
  .gallery-grid{grid-template-columns:1fr;gap:14px;}
  .g-item.wide{grid-column:span 1;}
  .g-item.wide img{aspect-ratio:16/11;}
  .section{padding:48px 0;}
  .sec-title{font-size:21px;}
  .btn-x{height:42px;padding:0 18px;font-size:14px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-x{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}