/* ============================================================
   quickq-download.com.cn —— 深空枢纽 · 霓虹玻璃光幕
   深空蓝黑底 + 电光青/紫罗兰霓虹 + 玻璃拟态 + 背景虚化 + 左侧竖排导航
   ============================================================ */
:root{
  --bg:#060a14;
  --bg-2:#0a1120;
  --primary:#22d3ee;
  --primary-2:#a78bfa;
  --accent:#fb7185;
  --ink:#e8f1f8;
  --muted:#93a3b8;
  --muted-2:#7c8aa0;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --glass-strong:rgba(255,255,255,.09);
  --grad:linear-gradient(135deg,#22d3ee 0%,#a78bfa 100%);
  --grad-soft:linear-gradient(135deg,rgba(34,211,238,.14),rgba(167,139,250,.14));
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 14px 44px rgba(0,0,0,.38);
  --glow:0 0 40px rgba(34,211,238,.32);
  --sidebar-w:72px;
  --sidebar-open-w:216px;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-2)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 26px}
[hidden]{display:none!important}

/* ---------- 背景虚化层 ---------- */
.bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:url(../images/city-night.jpg) center/cover no-repeat;
  filter:blur(30px) brightness(.52) saturate(1.15);
  transform:scale(1.16);
}
.bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(55% 70% at 16% 6%,rgba(34,211,238,.16),transparent 62%),
    radial-gradient(50% 65% at 88% 26%,rgba(167,139,250,.18),transparent 62%),
    radial-gradient(46% 55% at 52% 96%,rgba(251,113,133,.12),transparent 62%),
    radial-gradient(22% 28% at 76% 78%,rgba(34,211,238,.10),transparent 60%);
}

/* ---------- 左侧悬浮图标栏(收起 72px / hover 展开 216px) ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:60;
  background:rgba(7,11,22,.72);
  backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 10px 18px;
  transition:width .28s ease;overflow-x:hidden;overflow-y:auto;
}
.sidebar:hover{width:var(--sidebar-open-w)}
.brand{display:flex;align-items:center;justify-content:center;gap:11px;font-weight:800;font-size:19px;color:var(--ink);padding:0 0 22px;letter-spacing:.3px}
.sidebar:hover .brand{justify-content:flex-start}
.brand img.brand-logo{width:34px;height:34px;border-radius:9px;flex:none;box-shadow:var(--glow)}
.brand span,.side-link span,.side-cta span{display:none;white-space:nowrap}
.sidebar:hover .brand span,.sidebar:hover .side-link span,.sidebar:hover .side-cta span{display:inline-block}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.side-link{
  display:flex;align-items:center;justify-content:center;gap:12px;padding:12px;border-radius:12px;
  color:var(--muted);font-weight:600;font-size:15px;transition:.2s;
}
.sidebar:hover .side-link{justify-content:flex-start;padding:12px 16px}
.side-link svg{flex:none;width:22px;height:22px}
.side-link:hover{color:var(--ink);background:var(--glass)}
.side-link.active{color:var(--primary);background:var(--grad-soft);box-shadow:inset 0 0 0 1px rgba(34,211,238,.22)}
.side-cta{margin-top:14px;width:100%;padding:12px;border-radius:12px;justify-content:center}
.sidebar:hover .side-cta{justify-content:flex-start}
.side-toggle{
  display:none;position:fixed;top:14px;left:14px;z-index:70;width:46px;height:46px;border-radius:12px;
  background:rgba(7,11,22,.8);border:1px solid var(--line);color:var(--ink);cursor:pointer;
  align-items:center;justify-content:center;backdrop-filter:blur(12px);
}
.side-toggle svg{width:26px;height:26px}
.scrim{position:fixed;inset:0;z-index:55;background:rgba(3,5,10,.6);opacity:0;pointer-events:none;transition:.3s}
.scrim.show{opacity:1;pointer-events:auto}

/* ---------- 主内容 ---------- */
.main{position:relative;z-index:1;margin-left:var(--sidebar-w);min-height:100vh}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;
  border:0;transition:.24s;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 52px rgba(34,211,238,.5)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- 全屏 Hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;text-align:center}
.hero-veil{
  position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(180deg,rgba(6,10,20,.42) 0%,rgba(6,10,20,.28) 45%,rgba(6,10,20,.82) 100%);
}
.hero-inner{position:relative;z-index:1;width:100%;padding:110px 22px 84px;display:flex;flex-direction:column;align-items:center}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--primary);
  font-weight:700;font-size:13px;letter-spacing:.5px;margin-bottom:22px;backdrop-filter:blur(14px);
}
.hero h1{font-size:58px;line-height:1.14;letter-spacing:-1px;margin-bottom:20px;font-weight:800}
.hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:18px;color:var(--muted);max-width:600px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:26px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap;justify-content:center}
.hero-sm{min-height:auto}
.hero-sm .hero-inner{padding:96px 22px 48px}
.hero-sm h1{font-size:44px}
.hero-stats b{display:block;font-size:15px;color:var(--ink);font-weight:700}
.hero-stats span{font-size:13px;color:var(--muted-2)}

/* 圆形电源按钮(脉冲光环) */
.power-btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  width:176px;height:176px;border-radius:50%;margin:12px auto 38px;
  background:var(--grad);color:#fff;box-shadow:var(--glow),0 24px 60px rgba(34,211,238,.34);transition:.3s;
}
.power-btn:hover{transform:scale(1.05);color:#fff;box-shadow:0 0 76px rgba(34,211,238,.55)}
.power-core{display:flex;flex-direction:column;align-items:center;gap:7px;font-weight:800;font-size:16px;position:relative;z-index:2}
.power-core svg{width:36px;height:36px}
.power-core em{font-style:normal;letter-spacing:.5px}
.pr{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(34,211,238,.6);animation:ring 3s ease-out infinite}
.pr2{animation-delay:1s}.pr3{animation-delay:2s}
@keyframes ring{0%{transform:scale(1);opacity:.85}100%{transform:scale(1.75);opacity:0}}

/* ---------- 通用 section ---------- */
.section{padding:72px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--primary);text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:33px;line-height:1.22;font-weight:800;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}

/* ---------- Bento 控制台网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.bento .cell{
  position:relative;border-radius:var(--radius);padding:28px;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow);
  transition:.28s;
}
.bento .cell:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35)}
.bento .c2{grid-column:span 2}.bento .c3{grid-column:span 3}.bento .c6{grid-column:span 6}
.bento .icon{width:50px;height:50px;border-radius:14px;background:var(--grad-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.bento .icon svg{width:26px;height:26px}
.bento h3{font-size:19px;margin-bottom:8px}
.bento p{color:var(--muted);font-size:14.5px}
.bento .feat{display:flex;gap:30px;align-items:center;background:linear-gradient(120deg,rgba(34,211,238,.12),rgba(167,139,250,.10))}
.bento .feat-txt{flex:1}
.bento .feat-art{flex:0 0 40%;max-width:380px}
.bento .feat-art svg{width:100%;height:auto}
.bento .pic{padding:0;display:flex;align-items:stretch;min-height:200px}
.bento .pic img{width:44%;object-fit:cover}
.bento .pic-cap{flex:1;padding:28px;display:flex;flex-direction:column;justify-content:center}
.bento .pic-cap h3{font-size:20px;margin-bottom:8px}
.bento .pic-cap p{color:var(--muted);font-size:14.5px}

/* 枢纽星座脉冲 */
.hub{width:100%;height:auto}
.hub .pulse{animation:ring 3s ease-out infinite;transform-origin:230px 150px}
@keyframes hubpulse{0%{opacity:.9;transform:scale(.5)}100%{opacity:0;transform:scale(1.5)}}
.hub .pulse{animation:hubpulse 2.8s ease-out infinite;transform-box:fill-box;transform-origin:center}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transition:.26s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.3)}
.card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.card p{color:var(--muted);font-size:14.5px}

/* 横向滚动卡片 */
.hscroll{display:flex;gap:18px;overflow-x:auto;padding:6px 2px 22px;scroll-snap-type:x mandatory}
.hscroll .card{min-width:280px;scroll-snap-align:start}
.hscroll .card img{border-radius:12px;margin-bottom:14px;aspect-ratio:16/9;object-fit:cover}
.hscroll::-webkit-scrollbar{height:8px}
.hscroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:8px}

/* ---------- 下载竖向按钮列表 ---------- */
.dl-list{display:flex;flex-direction:column;gap:14px;max-width:780px;margin:0 auto}
.dl-item{
  display:flex;align-items:center;gap:18px;padding:20px 26px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow);transition:.25s;
}
.dl-item:hover{transform:translateX(8px);border-color:var(--primary);box-shadow:var(--glow)}
.dl-ic{width:54px;height:54px;border-radius:15px;background:var(--grad-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;flex:none}
.dl-ic svg{width:27px;height:27px}
.dl-txt{flex:1;display:flex;flex-direction:column}
.dl-txt b{font-size:17px;color:var(--ink);font-weight:700}
.dl-txt small{font-size:13.5px;color:var(--muted);margin-top:2px}
.dl-arrow{color:var(--primary);flex:none}

/* ---------- 步骤时间线 ---------- */
.steps{list-style:none;counter-reset:step}
.steps li{position:relative;padding-left:76px;padding-bottom:36px;counter-increment:step}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  content:counter(step);position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:var(--grad);color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--glow);
}
.steps li::after{content:"";position:absolute;left:23px;top:54px;bottom:4px;width:2px;background:var(--line)}
.steps li:last-child::after{display:none}
.steps h3{font-size:18px;margin-bottom:6px}
.steps p{color:var(--muted);font-size:14.5px}

/* ---------- 左右图文 split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.split.rev .split-media{order:2}
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.split h2{font-size:28px;font-weight:800;margin-bottom:14px}
.split p{color:var(--muted);margin-bottom:12px}
.split ul{list-style:none;margin:10px 0 20px}
.split ul li{padding-left:26px;position:relative;margin-bottom:9px;color:var(--ink)}
.split ul li::before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:800}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);box-shadow:var(--shadow);backdrop-filter:blur(18px)}
table{width:100%;border-collapse:collapse;font-size:14.5px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--glass-strong);font-weight:700;color:var(--ink)}
tbody tr:last-child td{border-bottom:0}
td{color:var(--ink)}
td a{color:var(--primary)}
td .yes{color:#4ade80;font-weight:700}
td .no{color:var(--muted-2)}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;background:var(--grad-soft);color:var(--primary);font-weight:700;font-size:12.5px}

/* ---------- 提示框 ---------- */
.tip,.callout{border-radius:var(--radius-sm);padding:16px 20px;margin:18px 0;font-size:14.5px;backdrop-filter:blur(14px)}
.tip{background:rgba(251,146,60,.10);border:1px solid rgba(251,146,60,.32);color:#fcd9b6}
.callout{background:var(--grad-soft);border:1px solid rgba(34,211,238,.3);color:#bfeef7}

/* ---------- FAQ 折叠 ---------- */
.faq-list{max-width:840px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;padding:19px 24px;font-size:16.5px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-q .plus{color:var(--primary);font-size:24px;transition:.25s;flex:none}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{display:none;padding:0 24px 22px;color:var(--muted);font-size:15px}
.faq-item.open .faq-a{display:block}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:13.5px;color:var(--muted);padding:20px 0 0;align-items:center}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--muted-2)}

/* ---------- 文章双栏 ---------- */
.article-layout{display:grid;grid-template-columns:260px 1fr;gap:44px;align-items:start}
.toc{position:sticky;top:28px;background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.toc h4{font-size:13px;color:var(--muted);margin-bottom:12px;letter-spacing:1.5px;text-transform:uppercase}
.toc ul{list-style:none}
.toc a{display:block;padding:7px 0;color:var(--muted);font-size:14px;border-left:2px solid transparent;padding-left:12px}
.toc a:hover{color:var(--primary);border-color:var(--primary)}
.article-body{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:40px 44px;backdrop-filter:blur(20px);box-shadow:var(--shadow)}
.article-body h2{font-size:27px;font-weight:800;margin:38px 0 14px;padding-top:8px;color:var(--ink)}
.article-body h3{font-size:19px;font-weight:700;margin:26px 0 10px;color:var(--ink)}
.article-body p{color:#c9d4e4;margin-bottom:14px;font-size:16px}
.article-body ul,.article-body ol{margin:0 0 16px 24px;color:#c9d4e4}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:var(--radius-sm);margin:20px 0;box-shadow:var(--shadow);border:1px solid var(--line)}
.article-meta{display:flex;gap:16px;align-items:center;color:var(--muted);font-size:13.5px;padding:0 0 22px;border-bottom:1px solid var(--line);margin-bottom:6px}

/* 相关卡片 */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.related .card{padding:20px}

/* ---------- 页脚 ---------- */
.footer{margin-top:80px;background:rgba(5,8,16,.78);border-top:1px solid var(--line);backdrop-filter:blur(20px);padding:58px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;margin-bottom:38px}
.footer h4{font-size:14px;margin-bottom:16px;color:#fff;letter-spacing:.5px}
.footer p{color:var(--muted);font-size:14px;max-width:340px}
.footer ul{list-style:none}
.footer ul a{display:block;padding:5px 0;color:var(--muted);font-size:14px}
.footer ul a:hover{color:var(--primary)}
.footer .brand{color:#fff;margin-bottom:12px;padding:0}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--muted)}
.share{display:flex;gap:10px}
.share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);color:var(--muted)}
.share a:hover{color:#fff;border-color:var(--primary);background:rgba(34,211,238,.18)}
.share svg{width:16px;height:16px}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--grad);color:#fff;border:0;cursor:pointer;box-shadow:var(--glow);display:none;align-items:center;justify-content:center;z-index:50}
.to-top.show{display:flex}
.to-top svg{width:22px;height:22px}

/* ---------- 404 / search ---------- */
.center-hero{text-align:center;padding:110px 22px}
.center-hero h1{font-size:72px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}
.center-hero h2{font-size:27px;margin-bottom:14px}
.center-hero p{color:var(--muted);margin-bottom:28px}
.search-box{max-width:580px;margin:0 auto;display:flex;gap:10px}
.search-box input{flex:1;padding:15px 20px;border:1.5px solid var(--line);border-radius:999px;font-size:15px;background:var(--glass);color:var(--ink);backdrop-filter:blur(16px)}
.search-box input::placeholder{color:var(--muted-2)}
.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow)}
.search-results{max-width:740px;margin:38px auto 0;text-align:left}
.search-results .card{margin-bottom:14px}

/* ---------- 响应式 ---------- */
@media(max-width:1020px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento .c2,.bento .c3,.bento .c6{grid-column:span 2}
  .bento .feat{flex-direction:column}
  .bento .feat-art{flex:0 0 auto;max-width:100%}
  .bento .pic{flex-direction:column}
  .bento .pic img{width:100%;aspect-ratio:16/8}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .split.rev .split-media{order:0}
  .article-layout{grid-template-columns:1fr}
  .toc{position:static;display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .related{grid-template-columns:1fr}
}
@media(max-width:900px){
  .sidebar{width:var(--sidebar-open-w);transform:translateX(-100%);transition:.32s}
  .sidebar.open{transform:translateX(0)}
  .sidebar .brand span,.sidebar .side-link span,.sidebar .side-cta span{display:inline-block}
  .sidebar .brand,.sidebar .side-link,.sidebar .side-cta{justify-content:flex-start}
  .side-toggle{display:flex}
  .main{margin-left:0;padding-right:0}
  .hero h1{font-size:40px}
}
@media(max-width:640px){
  .hero h1{font-size:32px}
  .hero-lead{font-size:16px}
  .power-btn{width:150px;height:150px}
  .bento,.grid-3,.grid-4{grid-template-columns:1fr}
  .bento .c2,.bento .c3,.bento .c6{grid-column:span 1}
  .hero-stats{gap:20px}
  .steps li{padding-left:62px}
  .footer-grid{grid-template-columns:1fr}
  .article-body{padding:28px 24px}
}