/* 首屏采用已确认的浅色工作台构图；轨道只作窗口背后的静态几何。 */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
  column-gap: 56px;
  align-items: center;
  min-height: clamp(700px, calc(100vh - var(--mast-h) - 64px), 800px);
  padding-top: 4px;
  padding-bottom: 40px;
}
.lead-col { position: relative; z-index: 4; max-width: 572px; }
.trust-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 0 0 24px; font-size: 13.5px; color: var(--c-ink-muted); }
.lic { display: inline-flex; align-items: center; gap: 8px; min-height: 30px; padding: 3px 13px 3px 4px; border: 1px solid var(--c-line); border-radius: var(--r-pill); background: var(--c-glass); color: var(--c-ink); box-shadow: var(--sh-soft); font-weight: 500; }
.lic-code { display: inline-flex; align-items: center; min-height: 22px; padding: 0 8px; border-radius: var(--r-pill); background: var(--c-accent-soft); color: var(--c-accent-dark); font-family: var(--f-mono); font-size: 11.5px; font-weight: 600; }
.trust-dot { width: 3px; height: 3px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-ink-faint); }
.headline { margin: 0; font-family: var(--f-display); font-weight: 800; font-size: clamp(28px, calc(1.9vw + 19px), 46px); line-height: 1.2; letter-spacing: -0.02em; color: var(--c-ink); }
.headline > span { display: block; }
.headline .mid { color: var(--c-ink-muted); font-weight: 600; margin: 0 0.1em; }
.headline em { font-style: normal; color: var(--c-accent); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.summary { margin: 24px 0 0; max-width: 31em; font-size: 16.5px; line-height: 1.75; color: var(--c-ink-muted); }
.summary strong { color: var(--c-ink); font-weight: 600; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 0; padding: 0; list-style: none; }
.tag-row li, .tag { display: inline-flex; align-items: center; gap: 8px; min-height: 30px; max-width: 100%; padding: 4px 12px 4px 11px; border: 1px solid var(--c-line); border-radius: var(--r-pill); background: var(--c-glass); color: var(--c-ink); font-size: 13px; overflow-wrap: anywhere; }
.tag-row li::before { content: ""; width: 6px; height: 6px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-accent); }
.os-row { display: flex; align-items: center; gap: 16px; margin-top: 36px; }
.os-label { font-size: 13px; color: var(--c-ink-muted); white-space: nowrap; }
.os-bar { display: flex; align-items: center; flex-wrap: wrap; padding: 4px; margin: 0; list-style: none; border: 1px solid var(--c-line); border-radius: var(--r-bar); background: var(--c-panel); color: var(--c-ink); box-shadow: var(--sh-soft); }
.os-bar li { position: relative; }
.os-bar li + li::before { content: ""; position: absolute; left: 0; top: 11px; bottom: 11px; width: 1px; background: var(--c-line-soft); }
.os-bar a { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 7px 14px; border-radius: var(--r-cell); font-size: 13.5px; font-weight: 500; color: var(--c-ink); }
.os-bar svg { width: 15px; height: 15px; color: var(--c-ink-muted); }
.os-bar a:hover { background: var(--c-panel-2); color: var(--c-accent-dark); }
.bench { position: relative; margin: 0; padding-left: 40px; min-width: 0; }
.bench-core { position: relative; }
.orbit { position: absolute; left: 50%; top: 50%; width: 900px; height: 640px; transform: translate(-50%, -50%); pointer-events: none; z-index: 0; -webkit-mask-image: linear-gradient(90deg, var(--c-clear) 6%, var(--c-mask) 36%); mask-image: linear-gradient(90deg, var(--c-clear) 6%, var(--c-mask) 36%); }
.orbit::before { content: ""; position: absolute; inset: 12% 16%; border-radius: var(--r-circle); background: radial-gradient(closest-side, var(--c-wash-mint) 0%, var(--c-clear) 100%); }
.ring { position: absolute; border-radius: var(--r-circle); }
.ring-outer { inset: 0; border: 1px solid var(--c-ring); }
.ring-inner { inset: 74px 96px; border: 1px dashed var(--c-ring-soft); }
.orbit-dot { position: absolute; width: 8px; height: 8px; margin: -4px 0 0 -4px; border-radius: var(--r-circle); }
.orbit-dot.d1 { left: 42%; top: 1.2%; background: var(--c-accent); box-shadow: var(--halo-dot); }
.orbit-dot.d2 { left: 75%; top: 93.3%; background: var(--c-sky-dot); box-shadow: var(--halo-sky); }
.bench-tilt { position: relative; z-index: 1; transform: perspective(2400px) rotateY(-4deg) rotate(-2deg); transform-origin: 60% 50%; }
.client { position: relative; background: var(--c-panel); color: var(--c-ink); border: 1px solid var(--c-line); border-radius: var(--r-win); box-shadow: var(--sh-win); overflow: hidden; }
.client-bar, .code-chrome { min-height: 44px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; padding: 10px 16px; border-bottom: 1px solid var(--c-line-soft); background: linear-gradient(180deg, var(--c-panel) 0%, var(--c-panel-soft) 100%); color: var(--c-ink-muted); }
.client-lights { display: flex; gap: 7px; }
.client-lights i { width: 11px; height: 11px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-light-1); }
.client-lights i:nth-child(2) { background: var(--c-light-2); }
.client-lights i:nth-child(3) { background: var(--c-light-3); }
.client-title { font-size: 13px; font-weight: 600; color: var(--c-ink-muted); }
.client-grid { display: grid; grid-template-columns: 156px minmax(0, 1fr); }
.nav-side { padding: 12px 10px; background: var(--c-panel-soft); color: var(--c-ink-muted); border-right: 1px solid var(--c-line-soft); }
.nav-side ul { display: flex; flex-direction: column; gap: 3px; list-style: none; margin: 0; padding: 0; }
.side-row { display: flex; align-items: center; gap: 9px; min-height: 36px; padding: 7px 11px; border-radius: var(--r-cell); font-size: 13px; color: var(--c-ink-muted); }
.side-row svg { width: 16px; height: 16px; }
.side-row.on { background: var(--c-accent-soft); color: var(--c-accent-dark); font-weight: 600; }
.pane { min-width: 0; padding: 18px 20px 14px; }
.route-head { display: flex; flex-direction: column; gap: 2px; }
.route-head b { font-size: 15px; font-weight: 700; }
.route-head span { font-size: 12px; color: var(--c-ink-muted); }
.route-tools { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; }
.seg { display: inline-flex; gap: 2px; padding: 3px; border-radius: var(--r-cell); background: var(--c-panel-2); color: var(--c-ink-muted); }
.seg span { display: inline-flex; align-items: center; min-height: 26px; padding: 3px 12px; border-radius: var(--r-input); font-size: 12px; }
.seg span.on { background: var(--c-panel); color: var(--c-ink); font-weight: 600; box-shadow: var(--sh-seg); }
.strategy { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--c-ink-muted); }
.pick { display: inline-flex; align-items: center; gap: 6px; min-height: 30px; padding: 4px 9px 4px 10px; border: 1px solid var(--c-line); border-radius: var(--r-input); background: var(--c-panel); color: var(--c-ink); font-family: var(--f-mono); font-size: 12px; }
.pick.zh { font-family: var(--f-body); }
.rule-table { margin-top: 14px; }
.rule-row { display: grid; grid-template-columns: 14px minmax(0, 1fr) 20px 78px 16px; column-gap: 12px; align-items: center; min-height: 44px; border-top: 1px solid var(--c-line-soft); }
.rule-row.head { min-height: 28px; border-top: 0; font-size: 11.5px; color: var(--c-ink-muted); }
.mono { font-family: var(--f-mono); }
.grip { color: var(--c-ink-muted); font-size: 15px; }
.rule-expr { font-family: var(--f-mono); font-size: 12.5px; color: var(--c-ink); overflow-wrap: anywhere; }
.rule-expr i { font-style: normal; color: var(--c-ink-muted); }
.rule-arrow { color: var(--c-ink-muted); }
.out { justify-self: start; display: inline-flex; align-items: center; min-height: 24px; padding: 2px 11px; border-radius: var(--r-pill); font-family: var(--f-mono); font-size: 12px; font-weight: 500; border: 1px solid var(--c-clear); }
.out-proxy { background: var(--c-accent); color: var(--c-on-accent); }
.out-direct { background: var(--c-panel-soft); border-color: var(--c-line); color: var(--c-ink-muted); }
.out-block { background: var(--c-panel); border-color: var(--c-error); color: var(--c-error-ink); }
.tick { width: 16px; height: 16px; border-radius: var(--r-input); display: grid; place-items: center; background: var(--c-accent); color: var(--c-on-accent); font-size: 10px; }
.client-foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 14px; padding: 11px 20px; border-top: 1px solid var(--c-line); background: var(--c-panel-soft); color: var(--c-ink); font-size: 12.5px; }
.opt { display: inline-flex; align-items: center; gap: 8px; }
.opt .pick { min-height: 26px; }
.opt-k { color: var(--c-ink-muted); }
.switch { position: relative; width: 30px; height: 18px; flex-shrink: 0; border-radius: var(--r-pill); background: var(--c-switch-off); }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: var(--r-circle); background: var(--c-panel); box-shadow: var(--sh-knob); }
.switch.on { background: var(--c-accent); }
.switch.on::after { transform: translateX(12px); }
.float { position: absolute; z-index: 3; background: var(--c-panel); color: var(--c-ink); border: 1px solid var(--c-line); border-radius: var(--r-card); box-shadow: var(--sh-float); }
.float-dns { top: -38px; right: -30px; width: 300px; padding: 15px 16px 16px; }
.float-out { left: -84px; bottom: 76px; width: 272px; padding: 14px 16px 16px; }
.float-head { display: flex; align-items: center; gap: 10px; }
.float-ico { width: 28px; height: 28px; flex-shrink: 0; border-radius: var(--r-cell); display: grid; place-items: center; background: var(--c-accent-soft); color: var(--c-accent-dark); }
.float-ico svg { width: 15px; height: 15px; }
.float-head b { font-size: 13.5px; font-weight: 700; }
.float-head small { margin-left: auto; font-family: var(--f-mono); font-size: 11px; color: var(--c-ink-muted); }
.kv { display: grid; grid-template-columns: 58px minmax(0, 1fr); row-gap: 6px; margin: 12px 0 0; padding: 10px 12px; border: 1px solid var(--c-line-soft); border-radius: var(--r-cell); background: var(--c-panel-soft); color: var(--c-ink); font-family: var(--f-mono); font-size: 12.5px; line-height: 1.5; }
.kv dt { color: var(--c-ink-muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.proto-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.proto { display: inline-flex; align-items: center; min-height: 26px; max-width: 100%; padding: 3px 10px; border: 1px solid var(--c-line); border-radius: var(--r-pill); background: var(--c-panel-soft); color: var(--c-ink); font-family: var(--f-mono); font-size: 12px; font-weight: 500; overflow-wrap: anywhere; }
.proto.lead { background: var(--c-accent-soft); border-color: var(--c-accent-soft); color: var(--c-accent-dark); }
.sec-tag { display: inline-flex; align-items: center; gap: 8px; font-family: var(--f-mono); font-size: 12px; font-weight: 500; color: var(--c-accent-dark); }
.sec-tag::before { content: ""; width: 18px; height: 1px; background: var(--c-accent); }
.peek { background: var(--c-panel); color: var(--c-ink); border-top: 1px solid var(--c-line); }
.peek .shell { padding-top: 30px; padding-bottom: 64px; }
.peek h2 { margin: 12px 0 0; font-size: 30px; }
.peek p { margin: 10px 0 0; max-width: 36em; color: var(--c-ink-muted); }

/* 设置面板式 tabs；下载平台使用 tabs-platform 变体。 */
.tabs { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 28px; }
.tabs [role="tablist"] { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.tabs [role="tab"] { position: relative; display: flex; align-items: center; gap: 12px; width: 100%; min-height: 76px; padding: 16px 20px; border: 1px solid var(--c-line); border-radius: var(--r-bar); background: var(--c-panel); color: var(--c-ink); text-align: left; }
.tabs [role="tab"] svg { width: 21px; height: 21px; color: var(--c-ink-muted); }
.tab-copy { display: block; }
.tab-copy b { display: block; font-weight: 600; }
.tab-copy small { display: block; margin-top: 3px; color: var(--c-ink-muted); font-size: 12px; }
.tabs [role="tab"][aria-selected="true"] { background: var(--c-panel-2); color: var(--c-accent-dark); border-color: var(--c-line); }
.tabs [role="tab"][aria-selected="true"]::before { content: ""; position: absolute; left: 0; top: 18px; bottom: 18px; width: 3px; border-radius: var(--r-pill); background: var(--c-accent); }
.tabs [role="tabpanel"] { min-width: 0; padding: 32px; border: 1px solid var(--c-line); border-radius: var(--r-win); background: var(--c-panel); color: var(--c-ink); box-shadow: var(--sh-win); }
.tabs [role="tabpanel"] > p { color: var(--c-ink-muted); line-height: 1.85; }
.code-window { margin-top: 24px; min-width: 0; border: 1px solid var(--c-line); border-radius: var(--r-bar); overflow: hidden; }
.code-window pre { border-radius: var(--r-input); }
.code-chrome { font-family: var(--f-mono); font-size: 12px; }
.tabs-platform { display: block; }
.tabs-platform [role="tablist"] { flex-direction: row; flex-wrap: wrap; margin-bottom: 28px; }
.tabs-platform [role="tab"] { width: auto; min-height: 46px; padding: 10px 20px; }
.tabs-platform [role="tab"][aria-selected="true"]::before { display: none; }
.tabs-platform [role="tabpanel"] { box-shadow: none; }

.toc { display: flex; gap: 8px; flex-wrap: wrap; padding: 14px; margin-bottom: 32px; border: 1px solid var(--c-line); border-radius: var(--r-bar); background: var(--c-panel); color: var(--c-ink); }
.toc a { display: block; min-height: 44px; padding: 10px 14px; border-radius: var(--r-input); font-size: 14px; }
.toc a:hover, .toc a[aria-current="location"] { background: var(--c-panel-2); color: var(--c-accent-dark); }
.toc-sticky { position: sticky; top: 16px; z-index: 10; }
.faq-item { border: 1px solid var(--c-line); border-radius: var(--r-bar); background: var(--c-panel); color: var(--c-ink); }
.faq-item + .faq-item { margin-top: 12px; }
.faq-item summary { position: relative; cursor: pointer; padding: 22px 54px 22px 24px; min-height: 64px; font-weight: 600; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 24px; top: 19px; color: var(--c-accent-dark); font-size: 22px; font-family: var(--f-mono); }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 24px 24px; color: var(--c-ink-muted); }
.faq-answer p:last-child { margin-bottom: 0; }
.term-card { border-top: 3px solid var(--c-accent); }
.term-card dt { font-size: 21px; font-weight: 700; }
.term-card dd { margin: 12px 0 0; color: var(--c-ink-muted); }
.term-card .term-en { display: block; margin-top: 4px; font-family: var(--f-mono); font-size: 12px; color: var(--c-ink-muted); font-weight: 400; }
.badge { display: inline-flex; align-items: center; gap: 6px; max-width: 100%; padding: 4px 10px; border: 1px solid var(--c-line); border-radius: var(--r-pill); background: var(--c-panel-2); color: var(--c-ink-muted); font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; vertical-align: middle; }
.badge-primary { background: var(--c-accent); color: var(--c-on-accent); border-color: var(--c-accent); }
.badge-recommended { background: var(--c-accent-soft); color: var(--c-accent-dark); border-color: var(--c-accent-soft); }
.badge-retired { background: var(--c-panel-soft); color: var(--c-warn-ink); border-color: var(--c-warn); }
.badge-error { background: var(--c-panel); color: var(--c-error-ink); border-color: var(--c-error); }
.badge-dynamic { white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.download-card { box-shadow: var(--sh-win); }
.download-card-head { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }
.app-icon { width: 56px; height: 56px; flex-shrink: 0; }
.download-card-head h3 { margin-bottom: 5px; }
.download-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.download-meta { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; color: var(--c-ink-muted); font-size: 13px; }
.platform-card { padding: 26px; display: flex; flex-direction: column; gap: 16px; box-shadow: var(--sh-win); }
.platform-card > svg { width: 28px; height: 28px; color: var(--c-ink-muted); }
.platform-card .btn { align-self: flex-start; margin-top: auto; }
.article-card { display: flex; flex-direction: column; min-width: 0; }
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; font-size: 12px; color: var(--c-ink-muted); }
.article-card h3 { line-height: 1.5; font-size: 21px; }
.article-card p { color: var(--c-ink-muted); }
.article-link { margin-top: auto; padding-top: 16px; font-size: 14px; font-weight: 600; color: var(--c-accent-dark); }
.callout { margin-block: 24px; padding: 22px 24px; border: 1px solid var(--c-line); border-left: 3px solid var(--c-accent); border-radius: var(--r-bar); background: var(--c-panel-2); color: var(--c-ink); }
.callout strong { color: var(--c-accent-dark); }
.callout p:last-child { margin-bottom: 0; }
.callout-warn { border-left-color: var(--c-warn); }
.callout-warn strong { color: var(--c-warn-ink); }
.table-scroll { max-width: 100%; min-width: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--c-line); border-radius: var(--r-bar); }
.data-table { border-collapse: collapse; width: 100%; background: var(--c-panel); color: var(--c-ink); font-size: 14px; }
.data-table th, .data-table td, .prose table th, .prose table td {
  min-width: 7em;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: normal;
  word-break: normal;
}
.data-table th, .prose table th { background: var(--c-panel-2); color: var(--c-ink); font-weight: 600; }
.data-table tr:last-child td { border-bottom: 0; }
.prose table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; min-width: 0; border-collapse: collapse; background: var(--c-panel); color: var(--c-ink); }
.prose table code, .data-table code { overflow-wrap: anywhere; white-space: normal; }
.dl-fab { position: fixed; z-index: 30; right: 24px; bottom: 24px; display: inline-flex; align-items: center; gap: 12px; max-width: calc(100% - 40px); padding: 15px 20px; border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); box-shadow: var(--sh-float); }
.dl-fab > svg { width: 24px; height: 24px; color: var(--c-accent-dark); }
.dl-fab b { display: block; font-size: 14px; }
.dl-fab small { display: block; color: var(--c-ink-muted); font-size: 12px; }
.dl-fab:hover { border-color: var(--c-accent); }
.article-download { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px; margin-top: 48px; padding: 28px; border: 1px solid var(--c-line); border-radius: var(--r-win); background: var(--c-panel); color: var(--c-ink); box-shadow: var(--sh-soft); }
.article-download-copy { flex: 1 1 240px; min-width: 0; }
.article-download h2 { font-size: 24px; margin: 0 0 10px; }
.article-download p { color: var(--c-ink-muted); margin: 0; }
.quicksteps { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; padding-bottom: 48px; }
.quicksteps::before { content: ""; position: absolute; left: 10%; right: 10%; top: 50%; border-top: 1px dashed var(--c-accent); }
.quicksteps .card { position: relative; z-index: 1; }
.quicksteps .card:nth-child(2) { transform: translateY(24px); }
.quicksteps .card:nth-child(3) { transform: translateY(48px); }

/* 仅预览页使用的色板与状态排列。 */
.swatches { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.swatch { margin: 0; border: 1px solid var(--c-line); border-radius: var(--r-bar); overflow: hidden; background: var(--c-panel); color: var(--c-ink); }
.swatch-chip { height: 64px; border-bottom: 1px solid var(--c-line); }
.swatch figcaption { padding: 12px; font-family: var(--f-mono); font-size: 11px; overflow-wrap: anywhere; }
.sw-bg { background: var(--c-bg); color: var(--c-ink); }
.sw-panel { background: var(--c-panel); color: var(--c-ink); }
.sw-panel-2 { background: var(--c-panel-2); color: var(--c-ink); }
.sw-panel-soft { background: var(--c-panel-soft); color: var(--c-ink); }
.sw-line { background: var(--c-line); color: var(--c-ink); }
.sw-line-soft { background: var(--c-line-soft); color: var(--c-ink); }
.sw-accent { background: var(--c-accent); color: var(--c-on-accent); }
.sw-accent-dark { background: var(--c-accent-dark); color: var(--c-on-accent); }
.sw-accent-soft { background: var(--c-accent-soft); color: var(--c-ink); }
.sw-ink { background: var(--c-ink); color: var(--c-panel); }
.sw-muted { background: var(--c-ink-muted); color: var(--c-panel); }
.sw-faint { background: var(--c-ink-faint); color: var(--c-ink); }
.sw-success { background: var(--c-success); color: var(--c-ink); }
.sw-warn { background: var(--c-warn); color: var(--c-ink); }
.sw-error { background: var(--c-error); color: var(--c-ink); }
.sw-warn-ink { background: var(--c-warn-ink); color: var(--c-panel); }
.sw-error-ink { background: var(--c-error-ink); color: var(--c-panel); }
.sw-on-accent { background: var(--c-on-accent); color: var(--c-ink); }
.sw-mint { background: var(--c-wash-mint); color: var(--c-ink); }
.sw-sky { background: var(--c-wash-sky); color: var(--c-ink); }
.sw-light-1 { background: var(--c-light-1); color: var(--c-ink); }
.sw-light-2 { background: var(--c-light-2); color: var(--c-ink); }
.sw-light-3 { background: var(--c-light-3); color: var(--c-ink); }
.sw-switch { background: var(--c-switch-off); color: var(--c-ink); }
.sw-sky-dot { background: var(--c-sky-dot); color: var(--c-ink); }
.sw-glass { background: var(--c-glass); color: var(--c-ink); }
.sw-ring { background: var(--c-ring); color: var(--c-ink); }
.sw-ring-soft { background: var(--c-ring-soft); color: var(--c-ink); }
.sw-mask { background: var(--c-mask); color: var(--c-panel); }
.sw-clear { background: var(--c-clear); color: var(--c-ink); }
.sw-veil { background: var(--c-veil); color: var(--c-ink); }
.state-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-block: 20px; }
.is-focus { outline: 3px solid var(--c-accent-dark); outline-offset: 4px; }
.preview-menu { display: none; }
@media (max-width: 1180px) {
  .hero { grid-template-columns: 1fr; row-gap: 64px; padding-top: 32px; padding-bottom: 72px; }
  .lead-col { max-width: 640px; }
  .bench { padding-left: 0; width: 100%; max-width: 700px; }
  .float-out { left: -20px; }
  .float-dns { right: -12px; }
}
@media (max-width: 1000px) {
  .preview-menu { display: block; position: relative; }
  .preview-menu > summary { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--c-line); border-radius: var(--r-cell); background: var(--c-panel); color: var(--c-ink); cursor: pointer; list-style: none; }
  .preview-menu > summary::-webkit-details-marker { display: none; }
  .preview-menu nav { position: absolute; right: 0; top: 54px; width: 240px; padding: 12px; background: var(--c-panel); color: var(--c-ink); border: 1px solid var(--c-line); border-radius: var(--r-bar); box-shadow: var(--sh-win); }
  .preview-menu nav a { display: block; min-height: 44px; padding: 10px 14px; }
}
@media (max-width: 768px) {
  .headline { font-size: clamp(24px, 4vw, 30px); }
  .tabs { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .tabs [role="tablist"] { flex-direction: row; gap: 8px; overflow-x: auto; padding-bottom: 8px; }
  .tabs [role="tab"] { flex: 0 0 auto; width: auto; min-height: 44px; padding: 10px 16px; border-radius: var(--r-pill); }
  .tabs .tab-copy small { display: none; }
  .tabs [role="tab"][aria-selected="true"]::before { display: none; }
  .tabs [role="tabpanel"] { padding: 24px; }
  .quicksteps { grid-template-columns: 1fr; padding-bottom: 0; }
  .quicksteps::before { display: none; }
  .quicksteps .card:nth-child(n) { transform: none; }
}
@media (max-width: 720px) {
  .trust-row { gap: 10px; }
  .os-row { flex-direction: column; align-items: flex-start; gap: 10px; }
  .os-bar a { min-height: 44px; }
  .orbit { display: none; }
  .bench-tilt { transform: none; }
  .client-grid { grid-template-columns: minmax(0, 1fr); }
  .nav-side { display: none; }
  .route-tools { flex-wrap: wrap; }
  .float { position: relative; inset: auto; width: auto; margin-top: 14px; }
}
@media (max-width: 640px) {
  .hero { min-height: auto; row-gap: 40px; padding-top: 28px; padding-bottom: 48px; }
  .headline > span { text-wrap: balance; }
  .headline .nowrap { white-space: normal; }
  .trust-row { font-size: 12px; }
  .trust-row .lic { font-size: 12px; }
  .os-bar a { padding-inline: 10px; font-size: 12px; gap: 6px; }
  .pane { padding: 16px 12px; }
  .rule-row { grid-template-columns: minmax(0, 1fr) 14px 64px; gap: 6px; }
  .rule-row .grip, .rule-row .tick, .rule-row .check-label { display: none; }
  .rule-expr { font-size: 11px; }
  .out { padding-inline: 7px; font-size: 11px; }
  .client-foot { padding-inline: 12px; }
  .tabs [role="tabpanel"] { padding: 20px; }
  .swatches { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dl-fab { right: 20px; bottom: 20px; padding: 12px 16px; }
  .article-download { padding: 22px; }
  .tag-row { flex-direction: row; flex-wrap: wrap; }
}