/* ============================================================
   QuickQ quickququ.com.cn — 「全球航线控制台 / Global Line Console」
   架构:沉浸式产品展示 + 场景叙事(非营销卡片套件)
   ============================================================ */

:root {
  --bg: #04070f;
  --bg2: #070d1a;
  --ink: #eaf2ff;
  --muted: #a3b8d6;
  --faint: #66809f;
  --pri: #2f7bff;
  --pri-2: #00c2ff;
  --pri-12: rgba(47, 123, 255, .12);
  --pri-18: rgba(47, 123, 255, .20);
  --amber: #ffb545;
  --panel: #0a1322;
  --panel2: #0d1c31;
  --line: rgba(148, 180, 224, .13);
  --line2: rgba(148, 180, 224, .26);
  --grad: linear-gradient(135deg, #2f7bff 0%, #00c2ff 100%);
  --grad-soft: linear-gradient(135deg, rgba(47,123,255,.16), rgba(0,194,255,.16));
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --wrap: 1160px;
  --rad: 18px;
  --shadow: 0 24px 60px -30px rgba(0, 0, 0, .7);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.22; font-weight: 800; letter-spacing: -.01em; }
h1 { font-size: clamp(32px, 4.6vw, 56px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 18px; }
h4 { font-size: 16px; }
::selection { background: var(--pri); color: #fff; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.pri { color: var(--pri-2); }
.mono { font-family: var(--mono); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 页头(无公告条,极简导航 + 下拉) ---------- */
.masthead {
  position: sticky; top: 0; z-index: 60;
  background: rgba(4, 7, 15, .78);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 12px; padding-bottom: 12px; }
.wordmark { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); }
.wm-mark { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--line2); flex: none; display: block; box-shadow: 0 4px 14px -4px rgba(47,123,255,.5); }
.wm-text { display: flex; flex-direction: column; line-height: 1.05; }
.wm-name { font-size: 18px; font-weight: 800; letter-spacing: .02em; }
.wm-sub { font-family: var(--mono); font-size: 9px; letter-spacing: .2em; color: var(--faint); text-transform: uppercase; }

.nav-wrap { display: flex; align-items: center; gap: 4px; }
.nav { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav > li { position: relative; }
.nav a { display: block; padding: 8px 14px; border-radius: 9px; font-size: 14.5px; font-weight: 600; color: var(--muted); transition: color .2s, background .2s; }
.nav a:hover { color: var(--ink); background: var(--panel2); }
.nav a.active { color: #fff; background: var(--pri-18); }
.dd { position: relative; }
.dd > a::after { content: "▾"; font-size: 10px; margin-left: 6px; color: var(--faint); }
.dd-menu {
  position: absolute; left: 0; top: calc(100% + 8px); min-width: 190px;
  background: #0a1322; border: 1px solid var(--line2); border-radius: 14px; padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: all .18s ease; box-shadow: var(--shadow);
}
.dd:hover .dd-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dd-menu a { padding: 9px 12px; font-size: 13.5px; font-weight: 500; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line2); color: var(--ink); font-size: 20px; border-radius: 10px; width: 40px; height: 40px; cursor: pointer; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; font-size: 14.5px; line-height: 1; border: 1px solid transparent; border-radius: 12px; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease; white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 26px -10px rgba(47,123,255,.7); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px -10px rgba(0,194,255,.6); filter: brightness(1.05); }
.btn-outline { background: transparent; color: var(--pri-2); border-color: var(--line2); }
.btn-outline:hover { border-color: var(--pri-2); background: var(--pri-12); transform: translateY(-2px); }
.btn-lg { padding: 15px 30px; font-size: 15px; border-radius: 14px; }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.nav-cta { flex: none; }

/* ---------- 区块 ---------- */
.section { padding: 88px 0; }
.section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 720px; margin: 0 auto 46px; text-align: center; }
.sec-head h2 { margin-bottom: 12px; }
.sec-head p { color: var(--muted); font-size: 16px; }
.kicker { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--pri-2); margin-bottom: 16px; }
.kicker::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--pri-2); box-shadow: 0 0 10px var(--pri-2); }

/* ---------- 首页 hero(全幅真实照片 + 背景虚化) ---------- */
.hero { position: relative; padding: 132px 0 128px; overflow: hidden; }
.hero-bg { position: absolute; inset: -26px; z-index: 0;
  background: url("../images/gaming-setup.jpg") center/cover no-repeat;
  filter: blur(15px) brightness(.52) saturate(1.08); }
.hero-bg::after { content: ""; position: absolute; inset: 0;
  background: linear-gradient(118deg, rgba(4,7,15,.94) 0%, rgba(4,7,15,.62) 52%, rgba(4,7,15,.36) 100%); }
.hero-fade { position: absolute; left: 0; right: 0; bottom: -1px; height: 120px; z-index: 1;
  background: linear-gradient(180deg, transparent, var(--bg)); }
.hero .wrap { position: relative; z-index: 2; }
.hero-body { max-width: 720px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: 22px; }
.eyebrow .ey-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--pri-2); box-shadow: 0 0 10px var(--pri-2); animation: pulse 2.2s infinite; }
.hero h1 { margin-bottom: 20px; letter-spacing: -.02em; }
.hero .lead { color: var(--muted); font-size: 17.5px; max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 7px 15px; }
.chip b { color: var(--ink); font-weight: 700; }
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--pri-2); }

/* 产品控制台(纯 CSS 客户端界面) */
.console { background: var(--panel); border: 1px solid var(--line2); border-radius: 20px; overflow: hidden; box-shadow: 0 30px 70px -30px rgba(0,0,0,.8); }
.console-top { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--panel2); }
.console-top .c-dot { width: 11px; height: 11px; border-radius: 50%; }
.console-top .c-dot:nth-child(1) { background: #ff5f57; }
.console-top .c-dot:nth-child(2) { background: #febc2e; }
.console-top .c-dot:nth-child(3) { background: #28c840; }
.console-top .c-title { margin-left: 8px; font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .06em; }
.console-body { padding: 20px; }
.console-status { display: flex; align-items: center; gap: 10px; padding: 13px 15px; border-radius: 12px; background: var(--grad-soft); border: 1px solid var(--line); margin-bottom: 16px; }
.console-status .cs-dot { width: 9px; height: 9px; border-radius: 50%; background: #2be066; box-shadow: 0 0 12px #2be066; animation: pulse 1.8s infinite; }
.console-status b { font-size: 14.5px; }
.console-status span { margin-left: auto; font-family: var(--mono); font-size: 13px; color: var(--pri-2); }
.node-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px; font-size: 14px; color: var(--muted); }
.node-row:hover { background: var(--panel2); }
.node-row .nf { font-size: 17px; width: 20px; text-align: center; }
.node-row .nl { flex: 1; color: var(--ink); }
.node-row .np { font-family: var(--mono); font-size: 12.5px; color: var(--faint); }
.node-row .nd { font-family: var(--mono); font-size: 13px; color: var(--pri-2); }
.node-row.hit { background: var(--pri-12); }
.node-row.hit .nd { color: #2be066; }
.console-wave { margin: 14px 0 4px; }
.console-wave svg { width: 100%; height: 52px; display: block; }
.console-connect { width: 100%; margin-top: 8px; }

/* ---------- 全球节点球 ---------- */
.globe-wrap { display: flex; justify-content: center; padding: 8px 0 4px; }
.globe { width: 100%; max-width: 660px; height: auto; filter: drop-shadow(0 20px 50px rgba(47,123,255,.18)); }
.globe .gl-ring { fill: none; stroke: rgba(148,180,224,.10); stroke-width: 1; }
.globe .gl-arc { fill: none; stroke: rgba(0,194,255,.35); stroke-width: 1.3; }
.globe .gl-node { fill: var(--pri-2); }
.globe .gl-node-hub { fill: var(--amber); }
.globe .gl-link { stroke: rgba(47,123,255,.4); stroke-width: 1.1; stroke-dasharray: 3 4; }

/* ---------- 超大数字统计条 ---------- */
.stats-bar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #060b16; }
.stats-bar .wrap { display: flex; justify-content: space-around; gap: 20px; flex-wrap: wrap; padding-top: 34px; padding-bottom: 34px; }
.stat { text-align: center; min-width: 130px; }
.stat b { display: block; font-family: var(--mono); font-size: clamp(30px, 4vw, 44px); font-weight: 800; letter-spacing: -.02em; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat b small { font-size: 18px; }
.stat span { display: block; margin-top: 9px; font-size: 13px; letter-spacing: .06em; color: var(--muted); }

/* ---------- 场景叙事(玻璃拟态大卡) ---------- */
.scenario { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; }
.scenario.rev .scn-visual { order: -1; }
.scenario h2 { margin-bottom: 16px; }
.scenario .scn-text > p { color: var(--muted); margin-bottom: 14px; }
.scn-points { margin-top: 8px; }
.scn-points li { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-size: 14.5px; margin-bottom: 11px; }
.scn-points li::before { content: "▸"; color: var(--pri-2); flex: none; margin-top: 1px; }
.glass { position: relative; background: linear-gradient(180deg, rgba(47,123,255,.08), rgba(0,194,255,.03)); border: 1px solid var(--line2); border-radius: 22px; padding: 26px; overflow: hidden; }
.glass::after { content: ""; position: absolute; inset: 0; background: radial-gradient(80% 100% at 20% 0%, rgba(255,255,255,.06), transparent 50%); pointer-events: none; }
.glass img { border-radius: 14px; width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.glass .g-cap { display: flex; align-items: center; gap: 9px; margin-top: 14px; font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .05em; }
.glass .g-cap::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 8px var(--amber); }

/* ---------- marquee 滚动 ---------- */
.marquee { overflow: hidden; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #060b16; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 54px; width: max-content; animation: marquee 40s linear infinite; }
.marquee-track span { font-family: var(--mono); font-size: 15px; letter-spacing: .12em; color: var(--muted); white-space: nowrap; display: inline-flex; align-items: center; gap: 54px; }
.marquee-track span::after { content: "•"; color: var(--pri-2); font-size: 12px; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 下载平台选择器 ---------- */
.platform-select { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ps { display: flex; align-items: center; gap: 15px; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px; transition: border-color .2s, transform .2s, background .2s; }
.ps:hover { border-color: var(--pri-2); transform: translateY(-3px); background: var(--panel2); }
.ps .ps-ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; font-size: 23px; background: var(--grad-soft); flex: none; }
.ps h3 { font-size: 15.5px; margin-bottom: 3px; }
.ps p { font-size: 12.5px; color: var(--faint); font-family: var(--mono); }
.ps .ps-go { margin-left: auto; color: var(--pri-2); font-size: 18px; }

/* ---------- 通用图标卡(替代 bento) ---------- */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 26px 24px; transition: border-color .2s, transform .2s; }
.tile:hover { border-color: var(--line2); transform: translateY(-3px); }
.tile .ic { width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center; background: var(--grad-soft); font-size: 23px; margin-bottom: 16px; }
.tile .t-tag { display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; color: var(--pri-2); margin-bottom: 9px; }
.tile .t-tag.amber { color: var(--amber); }
.tile h3 { font-size: 16.5px; margin-bottom: 8px; }
.tile p { color: var(--muted); font-size: 14px; line-height: 1.65; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--rad); background: var(--panel); }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 520px; }
.table-wrap th, .table-wrap td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.table-wrap thead th { background: var(--panel2); font-family: var(--mono); font-size: 12.5px; letter-spacing: .05em; color: var(--muted); }
.table-wrap tbody tr:last-child td { border-bottom: none; }
.table-wrap td { color: var(--muted); }
.table-wrap td:first-child { color: var(--ink); font-weight: 600; }
.ver-table th:not(:first-child), .ver-table td:not(:first-child) { text-align: center; }
.ver-table tbody td:first-child { color: var(--ink); font-weight: 600; }
.badge-hit { font-family: var(--mono); font-size: 11px; color: var(--pri-2); background: var(--pri-12); padding: 2px 7px; border-radius: 5px; margin-left: 6px; }

/* ---------- 步骤 / 左右图文(矩阵页) ---------- */
.steps { max-width: 720px; margin: 0 auto; }
.step { display: flex; gap: 20px; padding: 20px 4px; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: none; }
.step .n { font-family: var(--mono); font-size: 14px; color: var(--pri-2); font-weight: 700; flex: none; padding-top: 3px; }
.step .b h3 { font-size: 16.5px; margin-bottom: 5px; }
.step .b p { color: var(--muted); font-size: 14.5px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; }
.split.rev .img { order: -1; }
.split h2 { margin-bottom: 16px; }
.split .txt p { color: var(--muted); margin-bottom: 14px; }
.split .img img { border-radius: var(--rad); aspect-ratio: 4/3; object-fit: cover; box-shadow: var(--shadow); border: 1px solid var(--line); }

/* ---------- 提示框 ---------- */
.tip, .callout { display: flex; gap: 12px; padding: 16px 18px; border-radius: 12px; background: var(--panel2); border: 1px solid var(--line); border-left: 3px solid var(--pri-2); margin: 22px 0; color: var(--muted); font-size: 14.5px; }
.tip .e, .callout .e { flex: none; font-size: 18px; line-height: 1.4; }
.callout { border-left-color: var(--amber); }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq-group-label { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 13px; letter-spacing: .1em; color: var(--pri-2); text-transform: uppercase; margin: 34px 0 10px; }
.faq-group-label:first-child { margin-top: 0; }
.faq-group-label::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--pri-2); }
.faq-item { border: 1px solid var(--line); border-radius: 14px; background: var(--panel); margin-bottom: 12px; overflow: hidden; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 18px 20px; background: none; border: none; cursor: pointer; text-align: left; font-family: var(--sans); font-size: 15.5px; font-weight: 700; color: var(--ink); }
.faq-q:hover { color: var(--pri-2); }
.faq-q .x { font-size: 20px; color: var(--faint); font-weight: 400; transition: transform .2s ease; flex: none; }
.faq-item.open .faq-q .x { transform: rotate(45deg); color: var(--pri-2); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 20px 20px; color: var(--muted); font-size: 14.5px; }
.faq-a a { color: var(--pri-2); text-decoration: underline; }

/* ---------- 内页 hero / 面包屑 ---------- */
.page-hero { padding: 64px 0 40px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #071021, transparent); }
.page-hero h1 { margin-bottom: 14px; }
.page-hero > .wrap > p { color: var(--muted); font-size: 16.5px; max-width: 680px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 13px; color: var(--faint); margin-bottom: 20px; }
.breadcrumb a { color: var(--faint); }
.breadcrumb a:hover { color: var(--pri-2); }
.breadcrumb .sep { color: var(--line2); }

/* ---------- 文章 ---------- */
.article-hero { padding: 56px 0 38px; border-bottom: 1px solid var(--line); }
.article-hero h1 { max-width: 860px; margin-bottom: 18px; font-size: clamp(26px, 3.6vw, 38px); }
.article-hero .meta { display: flex; gap: 20px; flex-wrap: wrap; font-family: var(--mono); font-size: 13px; color: var(--faint); }
.article-hero .meta b { color: var(--muted); font-weight: 600; }
.article-body { display: grid; grid-template-columns: 220px 1fr; gap: 48px; padding: 48px 24px; align-items: start; max-width: var(--wrap); margin: 0 auto; }
.toc { position: sticky; top: 90px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); padding: 20px; }
.toc h5 { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--pri-2); margin-bottom: 14px; }
.toc ol { list-style: none; }
.toc li { margin-bottom: 9px; }
.toc li a { display: flex; gap: 10px; font-size: 13.5px; color: var(--muted); line-height: 1.45; }
.toc li a:hover { color: var(--pri-2); }
.toc .num { font-family: var(--mono); color: var(--faint); flex: none; }
.prose { max-width: 720px; }
.prose h2 { font-size: 24px; margin: 40px 0 14px; padding-top: 20px; border-top: 1px solid var(--line); }
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.prose p { color: #c3d4ec; margin-bottom: 18px; font-size: 16px; }
.prose strong { color: var(--ink); }
.prose ul, .prose ol { margin: 0 0 20px 4px; padding-left: 24px; }
.prose ul li, .prose ol li { color: #c3d4ec; margin-bottom: 9px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose a { color: var(--pri-2); text-decoration: underline; }
.prose blockquote { margin: 26px 0; padding: 18px 22px; border-left: 3px solid var(--pri-2); background: var(--panel2); border-radius: 0 12px 12px 0; color: var(--muted); font-style: italic; }
.prose figure { margin: 28px 0; }
.prose figure img { border: 1px solid var(--line); border-radius: var(--rad); width: 100%; }
.prose figcaption { font-family: var(--mono); font-size: 12.5px; color: var(--faint); margin-top: 10px; text-align: center; }
.share { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.share-lbl { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); margin-right: 4px; }
.share a { font-family: var(--mono); font-size: 13px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 7px 15px; }
.share a:hover { color: var(--pri-2); border-color: var(--pri-2); }

/* ---------- 相关卡片 ---------- */
.rel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.rel-card { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; transition: border-color .2s ease, transform .2s ease; }
.rel-card:hover { border-color: var(--line2); transform: translateY(-3px); }
.rel-card .tag { display: inline-block; font-family: var(--mono); font-size: 11px; color: var(--pri-2); background: var(--pri-12); padding: 3px 8px; border-radius: 5px; margin-bottom: 10px; }
.rel-card h4 { font-size: 15.5px; margin-bottom: 7px; color: var(--ink); }
.rel-card p { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* ---------- CTA 横幅 ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--grad); border-radius: 22px; padding: 50px 44px; text-align: center; color: #fff; box-shadow: 0 30px 70px -30px rgba(47,123,255,.6); }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(50% 120% at 18% 0%, rgba(255,255,255,.24), transparent 55%), radial-gradient(40% 100% at 88% 100%, rgba(255,255,255,.14), transparent 55%); }
.cta-band h2 { margin-bottom: 12px; position: relative; }
.cta-band p { color: rgba(255,255,255,.92); margin-bottom: 26px; position: relative; }
.cta-band .btn-primary { background: #fff; color: var(--pri); box-shadow: 0 10px 24px -10px rgba(0,0,0,.3); }
.cta-band .btn-primary:hover { transform: translateY(-2px); filter: none; }

/* ---------- 搜索 / 地图 ---------- */
.searchbox input { width: 100%; padding: 16px 20px; font-size: 15.5px; color: var(--ink); background: var(--panel); border: 1px solid var(--line2); border-radius: 14px; outline: none; transition: border-color .2s ease, box-shadow .2s ease; }
.searchbox input:focus { border-color: var(--pri-2); box-shadow: 0 0 0 4px var(--pri-12); }
.search-results { list-style: none; }
.search-results li { border-bottom: 1px solid var(--line); padding: 14px 2px; }
.search-results a { color: var(--ink); font-size: 15.5px; }
.search-results a:hover { color: var(--pri-2); }
.sitemap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sitemap-col { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.sitemap-col h3 { font-family: var(--mono); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--pri-2); margin-bottom: 16px; }
.sitemap-col ul { list-style: none; }
.sitemap-col li { margin-bottom: 9px; }
.sitemap-col a { color: var(--muted); font-size: 14.5px; }
.sitemap-col a:hover { color: var(--pri-2); }

/* ---------- 页脚(简化) ---------- */
.mastfoot { border-top: 1px solid var(--line); background: #04070f; color: #a3b8d6; padding: 56px 0 30px; }
.mf-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 34px; border-bottom: 1px solid var(--line); }
.mf-brand p { color: var(--faint); font-size: 14px; margin-top: 14px; max-width: 260px; }
.mf-col h4 { font-size: 13px; font-family: var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--pri-2); margin-bottom: 16px; }
.mf-col a { display: block; font-size: 14px; color: var(--muted); margin-bottom: 11px; }
.mf-col a:hover { color: #6fb6ff; }
.mf-bot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 22px; font-family: var(--mono); font-size: 12.5px; color: #66809f; }

/* ---------- 返回顶部 / 客服浮标 ---------- */
.backtop { position: fixed; right: 26px; bottom: 26px; z-index: 60; width: 46px; height: 46px; border-radius: 14px; border: none; cursor: pointer; background: var(--grad); color: #fff; font-size: 20px; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity .25s ease, transform .25s ease; box-shadow: 0 12px 28px -10px rgba(47,123,255,.6); }
.backtop.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.support-fab { position: fixed; right: 26px; bottom: 84px; z-index: 60; display: flex; align-items: center; gap: 8px; background: var(--panel2); border: 1px solid var(--line2); border-radius: 999px; padding: 10px 18px; font-size: 13.5px; font-weight: 600; color: var(--ink); box-shadow: var(--shadow); transition: transform .2s, border-color .2s; }
.support-fab:hover { transform: translateY(-2px); border-color: var(--pri-2); }
.support-fab .sf-dot { width: 8px; height: 8px; border-radius: 50%; background: #2be066; box-shadow: 0 0 10px #2be066; }

@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(0,194,255,.55); } 50% { box-shadow: 0 0 0 6px rgba(0,194,255,0); } }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .scenario { grid-template-columns: 1fr; gap: 26px; }
  .scenario.rev .scn-visual { order: 0; }
  .platform-select, .rel-grid, .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .article-body { grid-template-columns: 1fr; }
  .toc { position: static; }
  .mf-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--bg); border-bottom: 1px solid var(--line); padding: 12px 24px 20px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; border-radius: 10px; }
  .dd-menu { position: static; opacity: 1; visibility: visible; transform: none; border: none; box-shadow: none; padding: 0 0 0 12px; }
  .nav-toggle { display: block; }
  .platform-select, .rel-grid, .sitemap-grid, .mf-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .hero { padding: 84px 0 88px; }
  .stats-bar .wrap { gap: 26px; }
  .support-fab { bottom: 20px; right: 16px; }
}

/* ===== 顶部状态条 topbar ===== */
.topbar{position:relative;z-index:60;background:linear-gradient(90deg,#02060f,#0a2540 55%,#2f7bff);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}