/* ============================================================
   QuickQ quickqkqu.com.cn —— 「琥珀金 · 光速通道」主题
   暖纸白底 + 琥珀金主色 + 深墨区块,招牌为光速通道视觉
   ============================================================ */

:root{
  --gold:#e8920c;
  --gold-2:#f5b301;
  --gold-deep:#c77b02;
  --gold-ink:#8a5a00;
  --amber-soft:#fff4d6;
  --amber-line:#f3dfa8;
  --ink:#1a140d;
  --ink-2:#241b10;
  --ink-3:#2f2516;
  --paper:#faf6ec;
  --paper-2:#f3ecdb;
  --paper-3:#ece2ca;
  --line:#e8ddc4;
  --line-soft:#efe6d2;
  --text:#3a3225;
  --muted:#6f6450;
  --muted-2:#94886f;
  --white:#ffffff;
  --shadow-sm:0 1px 2px rgba(26,20,13,.05),0 2px 8px rgba(26,20,13,.05);
  --shadow-md:0 6px 24px rgba(26,20,13,.09);
  --shadow-lg:0 16px 48px rgba(26,20,13,.14);
  --grad-gold:linear-gradient(135deg,#f5b301 0%,#e8920c 48%,#c77b02 100%);
  --grad-gold-soft:linear-gradient(135deg,#fff4d6,#ffedb8);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1160px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--paper);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold-deep);text-decoration:none}
a:hover{color:var(--gold)}
ul,ol{list-style-position:inside}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;
  border-radius:999px;padding:12px 26px;font-size:15px;line-height:1.4;cursor:pointer;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad-gold);color:#fff;box-shadow:0 8px 22px rgba(232,146,12,.35)}
.btn-primary:hover{color:#fff;box-shadow:0 12px 30px rgba(232,146,12,.45)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{color:var(--gold-deep);border-color:var(--gold)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.2)}
.btn-lg{padding:15px 34px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 页头 ---------- */
.masthead{position:sticky;top:0;z-index:60;background:rgba(250,246,236,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.masthead .wrap{display:flex;align-items:center;gap:28px;height:70px}
.wordmark{display:flex;align-items:center;gap:11px;color:var(--ink)}
.wordmark:hover{color:var(--ink)}
.wm-mark{width:38px;height:38px;flex:0 0 38px}
.wm-text{display:flex;flex-direction:column;line-height:1.1}
.wm-name{font-weight:800;font-size:19px;letter-spacing:.5px}
.wm-sub{font-size:10px;letter-spacing:2.5px;color:var(--gold-deep);font-weight:700}
.nav-wrap{display:flex;align-items:center;gap:6px;flex:1}
.nav{display:flex;list-style:none;gap:2px}
.nav a{display:block;padding:9px 15px;font-weight:600;color:var(--text);border-radius:8px;font-size:15px}
.nav a:hover{color:var(--gold-deep);background:var(--amber-soft)}
.nav a.active{color:var(--gold-deep);background:var(--amber-soft)}
.nav .dd{position:relative}
.dd-menu{position:absolute;top:100%;left:0;min-width:210px;background:var(--white);
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-md);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s ease}
.nav .dd:hover .dd-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dd-menu a{display:block;padding:9px 14px;border-radius:9px;font-size:14px;font-weight:500}
.dd-menu a:hover{background:var(--amber-soft)}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}
.nav-cta{margin-left:auto}

/* ---------- Hero 光速通道 ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 700px at 72% -10%,#3a2a10 0%,var(--ink) 46%,#120d08 100%);
  color:#fff;padding:88px 0 96px}
.hero::after{content:"";position:absolute;inset:0;background:
  radial-gradient(2px 2px at 20% 30%,rgba(245,179,1,.5),transparent 40%),
  radial-gradient(1.5px 1.5px at 70% 20%,rgba(245,179,1,.4),transparent 40%),
  radial-gradient(2px 2px at 50% 80%,rgba(255,255,255,.25),transparent 40%),
  radial-gradient(1px 1px at 85% 65%,rgba(245,179,1,.45),transparent 40%);
  pointer-events:none}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1.5px;
  color:var(--gold-2);text-transform:uppercase}
.hero-kicker .dot{width:8px;height:8px;border-radius:50%;background:var(--gold-2);
  box-shadow:0 0 0 0 rgba(245,179,1,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(245,179,1,.6)}70%{box-shadow:0 0 0 9px rgba(245,179,1,0)}100%{box-shadow:0 0 0 0 rgba(245,179,1,0)}}
.hero-title{font-size:52px;line-height:1.14;font-weight:800;letter-spacing:-.5px;margin:18px 0 20px}
.hero-title .hl{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:rgba(255,255,255,.72);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-note{font-size:13px;color:rgba(255,255,255,.5)}
.hero-visual{position:relative}
.tunnel{width:100%;max-width:460px;margin:0 auto;filter:drop-shadow(0 0 28px rgba(245,179,1,.35))}
.tunnel .ring{transform-origin:center;animation:spin 26s linear infinite}
.tunnel .ring.r2{animation-duration:40s;animation-direction:reverse}
.tunnel .beam{animation:dash 3.2s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes dash{to{stroke-dashoffset:-260}}

/* 速度对比示意 */
.speed-demo{margin-top:22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:18px 20px}
.speed-demo .sd-row{display:flex;align-items:center;gap:12px;margin:10px 0}
.speed-demo .sd-lbl{font-size:12px;color:rgba(255,255,255,.62);width:86px;flex:0 0 86px;text-align:right}
.speed-demo .sd-track{flex:1;height:8px;border-radius:99px;background:rgba(255,255,255,.1);overflow:hidden}
.speed-demo .sd-fill{height:100%;border-radius:99px;transition:width 1.4s cubic-bezier(.2,.8,.2,1)}
.speed-demo .sd-fill.before{background:linear-gradient(90deg,#8a5a00,#c77b02);width:76%}
.speed-demo .sd-fill.after{background:var(--grad-gold);width:14%}
.speed-demo .sd-note{font-size:11px;color:rgba(255,255,255,.42);text-align:center;margin-top:6px}

/* ---------- Section 通用 ---------- */
.section{padding:80px 0}
.section.alt{background:var(--paper-2)}
.section.dark{background:var(--ink);color:#fff}
.sec-head{max-width:640px;margin:0 auto 44px;text-align:center}
.sec-head.left{text-align:left;margin-left:0}
.kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:2px;color:var(--gold-deep);
  text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:-.3px;line-height:1.25}
.sec-head p{color:var(--muted);margin-top:12px;font-size:16px}
.dark .sec-head p{color:rgba(255,255,255,.6)}

/* ---------- Bento 功能网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bento-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.bento-card .ic{width:46px;height:46px;border-radius:12px;background:var(--amber-soft);color:var(--gold-deep);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.bento-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.bento-card p{color:var(--muted);font-size:14.5px}
.bento-card .lnk{display:inline-block;margin-top:14px;font-weight:700;font-size:14px;color:var(--gold-deep)}

/* ---------- 横向滚动卡片 ---------- */
.hscroll{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(240px,1fr);gap:18px;
  overflow-x:auto;padding:6px 4px 18px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.hscroll::-webkit-scrollbar{height:8px}
.hscroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.h-card{scroll-snap-align:start;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm)}
.h-card .h-step{font-size:12px;font-weight:800;color:var(--gold-deep);letter-spacing:1px}
.h-card h4{font-size:17px;font-weight:700;margin:10px 0 8px}
.h-card p{color:var(--muted);font-size:14px}

/* ---------- 左右图文 split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev .img{order:-1}
.split .txt h2{font-size:30px;font-weight:800;margin-bottom:16px;letter-spacing:-.3px}
.split .txt p{color:var(--muted);margin-bottom:14px}
.split .img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.split .img img{width:100%;height:320px;object-fit:cover}

/* ---------- 步骤时间线 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.step{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm)}
.step .n{width:40px;height:40px;border-radius:50%;background:var(--grad-gold);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.step .b{display:block}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--white);box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:520px}
th,td{padding:14px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line-soft)}
th{background:var(--paper-2);font-weight:700;color:var(--ink)}
tr:last-child td{border-bottom:none}
td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}

/* ---------- 提示框 ---------- */
.tip,.callout{display:flex;gap:14px;align-items:flex-start;border-radius:var(--radius-sm);padding:16px 18px;margin:18px 0}
.tip{background:var(--amber-soft);border:1px solid var(--amber-line)}
.callout{background:#eef7ec;border:1px solid #cfe6c8}
.tip .e,.callout .e{font-size:18px;flex:0 0 auto;line-height:1.5}
.tip div,.callout div{font-size:14.5px;color:var(--text)}

blockquote{border-left:4px solid var(--gold);background:var(--paper-2);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  margin:20px 0;color:var(--text);font-size:15.5px}

/* ---------- 相关卡片 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rel-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);display:block;transition:transform .2s ease,box-shadow .2s ease}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.rel-card .tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--gold-deep);
  background:var(--amber-soft);padding:3px 10px;border-radius:99px;margin-bottom:12px}
.rel-card h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px}
.rel-card p{color:var(--muted);font-size:13.5px}
/* 单列变体:快速入口等场景,卡片横排一行一个 */
.rel-grid.single{grid-template-columns:1fr;gap:14px}
.rel-grid.single .rel-card{display:flex;align-items:center;gap:16px;padding:18px 24px}
.rel-grid.single .rel-card:hover{transform:translateX(6px);box-shadow:var(--shadow-sm)}
.rel-grid.single .rel-card .tag{flex:0 0 auto;margin-bottom:0}
.rel-grid.single .rel-card h4{margin:0;font-size:17px;flex:0 0 auto}
.rel-grid.single .rel-card p{margin:0;font-size:14px}
.rel-grid.single .rel-card::after{content:"→";margin-left:auto;color:var(--gold-deep);font-weight:800;font-size:18px}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:var(--grad-gold);border-radius:20px;padding:46px 44px;text-align:center;color:#fff;
  box-shadow:var(--shadow-lg)}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:10px}
.cta-band p{opacity:.9;margin-bottom:24px}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--gold-deep)}
.breadcrumb .sep{color:var(--muted-2);margin:0 6px}

/* ---------- 页面 hero(矩阵页等) ---------- */
.page-hero{background:radial-gradient(900px 500px at 80% -20%,#4a3414 0%,var(--ink) 55%,#150f08 100%);
  color:#fff;padding:64px 0 60px;position:relative;overflow:hidden}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:40px;font-weight:800;letter-spacing:-.4px;margin:6px 0 14px}
.page-hero h1 .hl{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{color:rgba(255,255,255,.72);max-width:640px;font-size:16px}
.page-hero .breadcrumb a{color:rgba(255,255,255,.55)}
.page-hero .breadcrumb{color:rgba(255,255,255,.55)}

/* ---------- 文章页 ---------- */
.article-hero{background:radial-gradient(900px 500px at 85% -20%,#3a2a10 0%,var(--ink) 55%,#150f08 100%);
  color:#fff;padding:56px 0 52px}
.article-hero .breadcrumb a{color:rgba(255,255,255,.55)}
.article-hero .breadcrumb{color:rgba(255,255,255,.55)}
.article-hero h1{font-size:36px;font-weight:800;letter-spacing:-.4px;line-height:1.3;margin:8px 0 18px;max-width:800px}
.article-hero .meta{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
.article-hero .meta b{color:var(--gold-2);font-weight:700}
.article-body{display:grid;grid-template-columns:260px 1fr;gap:44px;max-width:1080px;margin:0 auto;padding:56px 24px}
.toc{position:sticky;top:96px;align-self:start;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.toc h5{font-size:12px;font-weight:800;letter-spacing:1.5px;color:var(--gold-deep);text-transform:uppercase;margin-bottom:14px}
.toc ol{list-style:none}
.toc li{display:flex;gap:10px;align-items:baseline;padding:7px 0;border-bottom:1px dashed var(--line-soft);font-size:14px}
.toc li:last-child{border-bottom:none}
.toc .num{font-weight:800;color:var(--gold);font-size:12px}
.toc a{color:var(--text)}
.toc a:hover{color:var(--gold-deep)}
.prose{min-width:0;max-width:720px}
.prose h2{font-size:26px;font-weight:800;letter-spacing:-.3px;margin:40px 0 14px;padding-top:8px}
.prose h2:first-child{margin-top:0}
.prose p{color:var(--text);margin-bottom:16px;font-size:16px}
.prose ul,.prose ol{margin:0 0 18px 4px;color:var(--text)}
.prose li{margin-bottom:8px;padding-left:4px}
.prose figure{margin:26px 0}
.prose figure img{border-radius:var(--radius);box-shadow:var(--shadow-md);width:100%}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}

/* ---------- 分享 ---------- */
.share{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.share-lbl{font-size:13px;font-weight:800;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.share a{font-size:13px;font-weight:600;color:var(--gold-deep);border:1px solid var(--line);border-radius:99px;padding:6px 14px}
.share a:hover{background:var(--amber-soft);border-color:var(--amber-line)}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:40px}
.faq-group h2{font-size:24px;font-weight:800;margin-bottom:18px;padding-left:14px;border-left:4px solid var(--gold)}
details{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
details summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;font-size:16px;
  display:flex;justify-content:space-between;align-items:center;gap:14px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";font-size:22px;color:var(--gold-deep);font-weight:700;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details .faq-a{padding:0 20px 18px;color:var(--muted);font-size:15px}

/* ---------- 页脚 ---------- */
.mastfoot{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.mf-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.mf-brand p{color:rgba(255,255,255,.5);font-size:14px;margin-top:16px;max-width:280px}
.mastfoot .wordmark{color:#fff}
.mastfoot .wm-sub{color:var(--gold-2)}
.mf-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.3px}
.mf-col a{display:block;color:rgba(255,255,255,.55);font-size:14px;padding:5px 0}
.mf-col a:hover{color:var(--gold-2)}
.mf-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;font-size:13px;color:rgba(255,255,255,.42);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* ---------- 返回顶部 / 客服浮标 ---------- */
.backtop{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--grad-gold);color:#fff;border:none;font-size:20px;cursor:pointer;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transition:.25s;z-index:50}
.backtop.show{opacity:1;visibility:visible}

/* ---------- 404 / 搜索 ---------- */
.center-hero{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center;
  background:radial-gradient(900px 500px at 50% -20%,#3a2a10 0%,var(--ink) 60%,#150f08 100%);color:#fff;padding:60px 24px}
.center-hero h1{font-size:64px;font-weight:800}
.center-hero h1 .hl{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.center-hero p{color:rgba(255,255,255,.7);margin:18px 0 26px;font-size:17px}
.search-box{display:flex;gap:10px;max-width:460px;margin:0 auto}
.search-box input{flex:1;padding:13px 18px;border-radius:99px;border:1px solid var(--line);font-size:15px;background:var(--white)}
.search-box input:focus{outline:none;border-color:var(--gold)}
.sitemap-list{columns:3;column-gap:36px;max-width:1000px;margin:0 auto}
.sitemap-list li{list-style:none;margin-bottom:10px;break-inside:avoid}
.sitemap-list a{color:var(--text)}
.sitemap-list a:hover{color:var(--gold-deep)}
.sitemap-list .grp{font-weight:800;color:var(--gold-deep);margin:18px 0 8px;display:block}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .hero-title{font-size:40px}
  .tunnel{max-width:360px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev .img{order:0}
  .article-body{grid-template-columns:1fr}
  .toc{position:static;order:-1}
  .rel-grid{grid-template-columns:1fr 1fr}
  .mf-grid{grid-template-columns:1fr 1fr}
  .sitemap-list{columns:2}
}
@media(max-width:640px){
  .masthead .wrap{height:62px}
  .nav{display:none}
  .nav-toggle{display:block}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:62px;left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--line);padding:12px 20px}
  .hero{padding:60px 0 70px}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px}
  .bento{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:26px}
  .page-hero h1{font-size:30px}
  .article-hero h1{font-size:27px}
  .mf-grid{grid-template-columns:1fr}
  .cta-band{padding:34px 24px}
  .cta-band h2{font-size:24px}
  .sitemap-list{columns:1}
}

/* ===== 顶部状态条 topbar ===== */
.topbar{position:relative;z-index:60;background:linear-gradient(90deg,#451a03,#b45309 55%,#d97706);color:#fff;font-size:13px;text-align:center;padding:7px 16px;letter-spacing:.4px;font-weight:500}
.topbar .tb-sep{opacity:.5;margin:0 9px}