/* 紫鸟浏览器 bb —— 紫鸟 · 多开阵列(亮色蓝白底 + 官方 logo 蓝 #3060f0) */
:root {
  --bg: #f6f9ff;
  --bg-2: #ffffff;
  --panel: #ffffff;
  --panel-2: #f0f5fe;
  --line: #dbe5f6;
  --ink: #0e1c38;
  --ink-2: #3a4d74;
  --muted: #6b7fa6;
  --primary: #3060f0;
  --primary-2: #1c4bd8;
  --primary-soft: rgba(48, 96, 240, .10);
  --sky: #2663e0;
  --sky-soft: rgba(38, 99, 224, .10);
  --blue2: #16337f;
  --blue2-soft: rgba(22, 51, 127, .08);
  --foot: #e9f0fc;
  --glass: rgba(255, 255, 255, .82);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(1160px, 92%); margin: 0 auto; }
.wrap-wide { width: min(1240px, 94%); margin: 0 auto; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: var(--glass);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-in { display: flex; align-items: center; gap: 22px; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo { width: 34px; height: 34px; border-radius: 8px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name b { font-size: 16px; letter-spacing: .5px; }
.brand-name em { font-style: normal; font-size: 11px; color: var(--sky); letter-spacing: 1px; }
.nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-link { padding: 8px 13px; border-radius: 8px; color: var(--ink-2); font-size: 14px; white-space: nowrap; }
.nav-link:hover { color: var(--ink); background: var(--primary-soft); }
.nav-link.active { color: #fff; background: var(--primary); }
.nav-cta {
  padding: 9px 18px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; font-weight: 700; font-size: 14px; white-space: nowrap;
}
.menu-btn { display: none; background: none; border: 1px solid var(--line); color: var(--ink); font-size: 20px; border-radius: 8px; padding: 4px 11px; cursor: pointer; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 13px 26px; border-radius: 11px; font-weight: 700; font-size: 15px; transition: .2s; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: 0 8px 26px rgba(48, 96, 240, .35); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-2); }

/* ---------- 首页 hero(居中 + 环境舱墙) ---------- */
.hero {
  padding: 70px 0 60px;
  background:
    radial-gradient(900px 460px at 12% -8%, rgba(48, 96, 240, .18), transparent 60%),
    radial-gradient(800px 420px at 88% 0%, rgba(38, 99, 224, .12), transparent 55%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero-in { text-align: center; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--sky);
  background: var(--sky-soft); border: 1px solid rgba(38, 99, 224, .22); margin-bottom: 20px;
}
.hero-kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--sky); box-shadow: 0 0 8px var(--sky); }
.hero-title { font-size: clamp(30px, 5vw, 52px); line-height: 1.18; font-weight: 900; letter-spacing: .5px; }
.hero-title .hl { background: linear-gradient(90deg, var(--primary-2), var(--sky)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 680px; margin: 18px auto 0; color: var(--ink-2); font-size: 17px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-top: 26px; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 13px; color: var(--muted); }
.hero-note .ico { color: var(--sky); margin-right: 4px; }

/* 环境舱墙 */
.env-wall {
  display: flex; gap: 15px; margin-top: 40px;
  overflow-x: auto; padding: 6px 4px 14px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
}
.env-wall::-webkit-scrollbar { height: 8px; }
.env-wall::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; }
.env-wall::-webkit-scrollbar-track { background: transparent; }
.env-card {
  flex: 0 0 236px; scroll-snap-align: start;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: 13px; padding: 0; overflow: hidden;
  box-shadow: 0 14px 34px rgba(14, 28, 56, .12);
}
.env-top { display: flex; align-items: center; gap: 6px; padding: 10px 13px; border-bottom: 1px solid var(--line); background: rgba(48, 96, 240, .05); }
.env-dot { width: 10px; height: 10px; border-radius: 50%; }
.env-dot.r { background: #ff5f57; }
.env-dot.y { background: #febc2e; }
.env-dot.g { background: #28c840; }
.env-name { margin-left: 7px; font-size: 12px; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.env-body { padding: 14px 14px 16px; }
.env-wave { display: flex; align-items: center; gap: 3px; height: 38px; }
.env-wave i { flex: 1; background: linear-gradient(180deg, var(--primary-2), var(--primary)); border-radius: 2px; opacity: .85; }
.env-wave i:nth-child(1) { height: 30%; } .env-wave i:nth-child(2) { height: 55%; }
.env-wave i:nth-child(3) { height: 78%; } .env-wave i:nth-child(4) { height: 48%; }
.env-wave i:nth-child(5) { height: 92%; } .env-wave i:nth-child(6) { height: 60%; }
.env-wave i:nth-child(7) { height: 38%; } .env-wave i:nth-child(8) { height: 70%; }
.env-wave i:nth-child(9) { height: 50%; } .env-wave i:nth-child(10) { height: 84%; }
.env-wave i:nth-child(11) { height: 44%; } .env-wave i:nth-child(12) { height: 66%; }
.env-wave i:nth-child(13) { height: 34%; } .env-wave i:nth-child(14) { height: 74%; }
.env-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; }
.env-tag { font-size: 11px; color: var(--sky); background: var(--sky-soft); padding: 2px 9px; border-radius: 6px; }
.env-ip { font-size: 12px; color: var(--muted); }

/* ---------- 通用区块 ---------- */
.section { padding: 66px 0; }
.section.tint { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 30px; }
.sec-title { font-size: clamp(22px, 3vw, 30px); font-weight: 900; letter-spacing: .3px; }
.sec-title .hl { color: var(--sky); }
.sec-lead { color: var(--muted); margin-top: 6px; font-size: 15px; }
.sec-more { color: var(--primary-2); font-weight: 600; font-size: 14px; white-space: nowrap; }
.sec-more:hover { color: var(--sky); }

/* ---------- 隔离舱 pods ---------- */
.pods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pod {
  background: linear-gradient(165deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: 15px; padding: 20px;
}
.pod-top { display: flex; align-items: center; gap: 9px; margin-bottom: 13px; }
.pod-ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; font-weight: 900; font-size: 16px; color: #fff; }
.pod-ico.a { background: var(--blue2); }
.pod-ico.b { background: var(--primary); }
.pod-ico.c { background: var(--sky); color: #fff; }
.pod-env { font-size: 12px; color: var(--muted); }
.pod-t { font-size: 17px; font-weight: 800; }
.pod-d { font-size: 13px; color: var(--muted); margin-top: 5px; }
.pod-stats { display: flex; gap: 16px; margin-top: 15px; padding-top: 13px; border-top: 1px dashed var(--line); }
.pod-stats span { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); }
.pod-stats b { font-size: 16px; color: var(--ink); }

/* ---------- feats ---------- */
.feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feat { background: var(--panel); border: 1px solid var(--line); border-radius: 13px; padding: 20px; transition: .2s; }
.feat:hover { border-color: var(--primary); transform: translateY(-3px); }
.feat-ico { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 13px; }
.feat-ico.blue { color: var(--primary-2); background: var(--primary-soft); }
.feat-ico.sky { color: var(--sky); background: var(--sky-soft); }
.feat-ico.blue2 { color: var(--blue2); background: var(--blue2-soft); }
.feat-ico.navy { color: #4a7dff; background: rgba(74, 125, 255, .12); }
.feat-t { font-size: 16px; font-weight: 800; }
.feat-d { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; position: relative; }
.step-no {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; font-weight: 900; margin-bottom: 13px;
}
.step-t { font-size: 17px; font-weight: 800; }
.step-d { font-size: 14px; color: var(--muted); margin-top: 6px; }

/* ---------- 左右图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.split.rev .split-img { order: 2; }
.split-img img { border-radius: 15px; border: 1px solid var(--line); aspect-ratio: 16/10; object-fit: cover; }
.split-txt h3 { font-size: 22px; font-weight: 900; margin-bottom: 12px; }
.split-txt p { color: var(--ink-2); margin-bottom: 12px; }

/* ---------- 下载矩阵 ---------- */
.plats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plat { background: var(--panel); border: 1px solid var(--line); border-radius: 13px; padding: 19px; }
.plat-ico { width: 40px; height: 40px; border-radius: 10px; background: var(--primary-soft); color: var(--primary-2); display: grid; place-items: center; margin-bottom: 13px; }
.plat-t { font-size: 16px; font-weight: 800; }
.plat-d { font-size: 12.5px; color: var(--muted); margin: 6px 0 12px; }
.plat-cta { font-size: 13px; color: var(--sky); font-weight: 600; }
.plat-cta:hover { color: var(--ink); }

/* ---------- 文章卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: .2s; }
.card:hover { border-color: var(--primary); transform: translateY(-4px); }
.card-img img { aspect-ratio: 16/9; object-fit: cover; }
.card-b { padding: 15px 16px 17px; }
.card-cat { font-size: 11px; color: var(--sky); background: var(--sky-soft); padding: 2px 9px; border-radius: 6px; }
.card-t { font-size: 16px; font-weight: 800; margin-top: 9px; line-height: 1.4; }
.card-d { font-size: 13px; color: var(--muted); margin-top: 7px; }
.card-more { display: inline-block; margin-top: 11px; font-size: 13px; color: var(--primary-2); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; background: var(--panel); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: 0; color: var(--ink); font-size: 15.5px; font-weight: 700; padding: 16px 18px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.faq-q .ico { color: var(--sky); font-weight: 900; }
.faq-a { display: none; padding: 0 18px 16px; color: var(--ink-2); font-size: 14.5px; }
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q .ico { transform: rotate(45deg); }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-radius: 20px; padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-t { font-size: 24px; font-weight: 900; color: #fff; }
.cta-d { color: rgba(255, 255, 255, .85); margin-top: 6px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta .btn-primary { background: #fff; color: var(--primary); box-shadow: none; }
.cta .btn-ghost { border-color: rgba(255, 255, 255, .5); color: #fff; }

/* ---------- 页脚 ---------- */
.foot { background: var(--foot); border-top: 1px solid var(--line); padding: 54px 0 0; }
.foot-in { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; padding-bottom: 40px; }
.foot-brand p { color: var(--muted); font-size: 13.5px; margin-top: 14px; max-width: 320px; }
.foot h5 { font-size: 14px; font-weight: 800; margin-bottom: 14px; }
.foot-links { list-style: none; }
.foot-links li { margin-bottom: 9px; }
.foot-links a { color: var(--muted); font-size: 13.5px; }
.foot-links a:hover { color: var(--sky); }
.foot-copy { text-align: center; padding: 18px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

/* ---------- 返回顶部 ---------- */
.backtop {
  position: fixed; right: 22px; bottom: 26px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff; border: 0; font-size: 19px; cursor: pointer;
  opacity: 0; pointer-events: none; transition: .25s; z-index: 70;
}
.backtop.show { opacity: 1; pointer-events: auto; }

/* ---------- 内页 hero ---------- */
.page-hero {
  padding: 54px 0 46px; text-align: center;
  background: radial-gradient(800px 380px at 50% -10%, rgba(48, 96, 240, .2), transparent 60%), var(--bg);
  border-bottom: 1px solid var(--line);
}
.page-hero-in { position: relative; }
.page-title { font-size: clamp(26px, 4vw, 40px); font-weight: 900; }
.page-sub { max-width: 680px; margin: 14px auto 0; color: var(--ink-2); font-size: 16px; }

/* ---------- 面包屑 ---------- */
.crumb { padding: 14px 0 0; font-size: 13px; color: var(--muted); }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--sky); }
.crumb span { color: var(--ink-2); }

/* ---------- 表格 ---------- */
.table { overflow-x: auto; }
.table table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 13px; overflow: hidden; }
.table th, .table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
.table th { background: var(--panel-2); font-weight: 800; }
.table td.hl { color: var(--sky); font-weight: 700; }
.table .yes { color: var(--sky); font-weight: 700; }
.table .no { color: var(--muted); }

/* ---------- 规格 / 提示框 ---------- */
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.spec-item { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.spec-item .k { display: block; font-size: 12px; color: var(--muted); }
.spec-item .v { display: block; font-size: 14px; font-weight: 700; margin-top: 5px; }
.callout { background: var(--blue2-soft); border: 1px solid rgba(22, 51, 127, .22); border-radius: 12px; padding: 14px 16px; color: var(--ink-2); font-size: 14px; margin-top: 14px; }
.callout .ico { color: var(--blue2); font-weight: 800; margin-right: 6px; }

/* ---------- 文章页 ---------- */
.article-grid { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: start; }
.toc-nav { position: sticky; top: 86px; background: var(--panel); border: 1px solid var(--line); border-radius: 13px; padding: 18px; }
.toc-nav h4 { font-size: 14px; font-weight: 800; margin-bottom: 12px; }
.toc-link { display: block; padding: 6px 0; font-size: 13px; color: var(--muted); border-left: 2px solid transparent; padding-left: 12px; }
.toc-link:hover { color: var(--ink); }
.toc-link.active { color: var(--sky); border-left-color: var(--sky); }
.article-body h1 { font-size: clamp(24px, 3.6vw, 34px); font-weight: 900; line-height: 1.3; margin-bottom: 14px; }
.article-meta { display: flex; gap: 14px; align-items: center; font-size: 12.5px; color: var(--muted); margin-bottom: 18px; flex-wrap: wrap; }
.badge { color: var(--sky); background: var(--sky-soft); padding: 2px 10px; border-radius: 6px; font-size: 12px; }
.lead { font-size: 16.5px; color: var(--ink-2); margin-bottom: 20px; }
.article-body h2 { font-size: 21px; font-weight: 900; margin: 30px 0 12px; padding-left: 12px; border-left: 4px solid var(--primary); }
.article-body p { color: var(--ink-2); margin-bottom: 14px; }
.article-body img { border-radius: 13px; border: 1px solid var(--line); margin: 8px 0 6px; }
.cap { font-size: 12px; color: var(--muted); margin-bottom: 18px; }
.author { display: flex; align-items: center; gap: 12px; margin-top: 34px; padding: 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 13px; }
.avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 900; }
.author b { font-size: 14px; }
.author small { display: block; font-size: 12px; color: var(--muted); }

/* ---------- 相关阅读 ---------- */
.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.related-card:hover { border-color: var(--primary); }
.related-card b { display: block; font-size: 14.5px; line-height: 1.4; }
.related-card span { display: block; font-size: 12px; color: var(--muted); margin-top: 6px; }

/* ---------- 404 / 搜索 ---------- */
.notfound { text-align: center; padding: 70px 0; }
.notfound .code { font-size: 90px; font-weight: 900; background: linear-gradient(90deg, var(--primary-2), var(--sky)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.notfound h2 { font-size: 26px; margin: 8px 0 10px; }
.notfound p { color: var(--muted); margin-bottom: 22px; }
.search-box { max-width: 560px; margin: 0 auto; }
.search-input { width: 100%; padding: 15px 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); font-size: 15px; }
.search-input:focus { outline: none; border-color: var(--primary); }
.search-results { padding-top: 40px; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .feats { grid-template-columns: repeat(2, 1fr); }
  .plats { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .pods { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .related { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: 1fr; }
  .toc-nav { position: static; }
  .foot-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav { display: none; position: absolute; top: 66px; left: 0; right: 0; background: var(--foot); flex-direction: column; align-items: stretch; padding: 12px; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .menu-btn { display: block; margin-left: auto; }
  .nav-cta { display: none; }
  .feats, .plats, .cards { grid-template-columns: 1fr; }
  .cta { padding: 28px; }
  .foot-in { grid-template-columns: 1fr; }
}