/* 静态首屏：颜色、字体、圆角及投影均来自 base.css。 */
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  min-height: 760px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  gap: 36px;
}
.hero__copy { align-self: center; padding-top: 40px; padding-bottom: 40px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; padding: 6px 14px 6px 11px; border: 1px solid var(--c-border); border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-muted); font-size: 13px; font-weight: var(--weight-semibold); margin-bottom: 24px; }
.eyebrow__dot { width: 8px; height: 8px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-success); color: var(--c-ink); box-shadow: 0 0 0 4px var(--c-success-soft); }
.hero__title { margin: 0 0 22px; font-size: var(--size-h1); font-weight: var(--weight-display); line-height: 1.14; letter-spacing: -0.035em; }
.hero__title span { display: block; white-space: nowrap; }
.hero__lead { max-width: 31em; margin-bottom: 32px; font-size: var(--size-lead); line-height: 1.75; color: var(--c-muted); }
.hero__lead strong { color: var(--c-ink); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.proto { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.proto__chip { max-width: 100%; padding: 5px 13px; border: 1px solid var(--c-border); border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-ink); font-family: var(--font-mono); font-size: 12.5px; font-weight: var(--weight-medium); overflow-wrap: anywhere; }
.platforms { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; padding-top: 22px; border-top: 1px solid var(--c-border); max-width: 520px; }
.platforms__link { display: inline-flex; align-items: center; min-height: 40px; gap: 9px; font-size: var(--size-small); font-weight: var(--weight-semibold); color: var(--c-ink); }
.platforms__tile { display: inline-grid; place-items: center; width: 32px; height: 32px; flex-shrink: 0; border-radius: var(--r-field); border: 1px solid var(--c-border); background: var(--c-panel); color: var(--c-ink); }
.platforms__tile svg { width: 16px; height: 16px; }
.platforms__link:hover { color: var(--c-accent-dark); }
.platforms__link:hover .platforms__tile { color: var(--c-accent-dark); border-color: var(--c-accent-line); }
.hero__stage { position: relative; align-self: stretch; display: flex; align-items: center; justify-content: flex-end; padding-top: 44px; min-width: 0; }
.geo-sun { position: absolute; top: -54px; left: 50%; width: 560px; height: 560px; border-radius: var(--r-circle); transform: translateX(-47%); background: linear-gradient(165deg, var(--c-sky) 18%, var(--c-accent) 92%); color: var(--c-ink); }
.geo-tri { position: absolute; right: -120px; bottom: 0; width: 520px; height: 560px; z-index: 0; overflow: visible; }
.stop-accent { stop-color: var(--c-accent); }
.stop-accent-dark { stop-color: var(--c-accent-dark); }
.stop-orchid { stop-color: var(--c-orchid); }
.stop-orchid-light { stop-color: var(--c-orchid-light); }
.stack { position: relative; z-index: 1; width: 690px; max-width: 100%; margin-right: -26px; transform: rotate(-2deg); transform-origin: 50% 60%; }
.stack__back { position: absolute; left: 38px; right: 38px; top: -24px; height: 120px; border-radius: var(--r-float); background: var(--c-ghost); color: var(--c-ink); border: 1px solid var(--c-ghost-edge); box-shadow: var(--shadow-back); backdrop-filter: blur(6px); }
.win { position: relative; border-radius: var(--r-float); background: var(--c-bg); color: var(--c-ink); border: 1px solid var(--c-border); box-shadow: var(--shadow-float); overflow: hidden; }
.win__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 28px 30px 24px; border-bottom: 1px solid var(--c-border); }
.win__title { font-family: var(--font-display); font-weight: var(--weight-heavy); font-size: 26px; letter-spacing: -0.025em; line-height: 1.2; }
.win__tag { display: inline-flex; align-items: center; gap: 7px; padding: 5px 11px; border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-muted); border: 1px solid var(--c-border); font-family: var(--font-mono); font-size: 12px; font-weight: var(--weight-medium); white-space: nowrap; }
.dot { width: 7px; height: 7px; flex-shrink: 0; border-radius: var(--r-circle); }
.dot--ok { background: var(--c-success); color: var(--c-ink); box-shadow: 0 0 0 3px var(--c-success-soft); }
.win__body { display: grid; grid-template-columns: 206px minmax(0, 1fr) 214px; }
.col { padding: 24px 22px 28px; }
.col + .col { border-left: 1px solid var(--c-border); }
.col__label { margin-bottom: 14px; font-size: 13.5px; font-weight: var(--weight-bold); letter-spacing: -0.005em; }
.col__label--sub { margin: 20px 0 10px; }
.sub__brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.sub__tile { display: inline-grid; place-items: center; width: 32px; height: 32px; flex-shrink: 0; border-radius: var(--r-tile); background: var(--c-accent); color: var(--c-white); font-weight: var(--weight-heavy); }
.sub__name { font-family: var(--font-display); font-size: var(--size-body); font-weight: var(--weight-heavy); letter-spacing: -0.015em; }
.sub__url { padding: 9px 11px; margin-bottom: 18px; border-radius: var(--r-field); background: var(--c-panel); color: var(--c-muted); border: 1px solid var(--c-border); font-family: var(--font-mono); font-size: 11.5px; line-height: 1.55; overflow-wrap: anywhere; }
.sub__acts { display: grid; gap: 8px; padding-top: 16px; margin-bottom: 18px; border-top: 1px solid var(--c-border); }
.sub__act { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: var(--weight-semibold); color: var(--c-muted); }
.sub__act svg { width: 15px; height: 15px; }
.skel { display: grid; gap: 9px; }
.skel span { display: block; height: 8px; border-radius: var(--r-pill); background: var(--c-panel-2); color: var(--c-ink); }
.skel span:nth-child(1) { width: 92%; }
.skel span:nth-child(2) { width: 74%; }
.skel span:nth-child(3) { width: 56%; }
.opts { display: grid; gap: 8px; }
.opt { display: flex; align-items: center; gap: 10px; min-height: 36px; padding: 7px 14px 7px 12px; border: 1px solid var(--c-border); border-radius: var(--r-pill); background: var(--c-bg); color: var(--c-ink); font-size: 13px; font-weight: var(--weight-semibold); line-height: 1.5; }
.opt__radio { width: 14px; height: 14px; border-radius: var(--r-circle); border: 1.5px solid var(--c-border-strong); flex-shrink: 0; }
.opt__check { width: 14px; height: 14px; margin-left: auto; color: var(--c-white); }
.opt.is-on { background: var(--c-accent); color: var(--c-white); border-color: var(--c-accent); box-shadow: var(--shadow-btn); }
.opt.is-on .opt__radio { border-color: var(--c-white); background: var(--c-white); color: var(--c-ink); box-shadow: inset 0 0 0 3px var(--c-accent); }
.select { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 38px; padding: 8px 12px; border: 1px solid var(--c-border); border-radius: var(--r-field); background: var(--c-panel); color: var(--c-ink); font-size: 13px; font-weight: var(--weight-semibold); }
.select svg { width: 14px; height: 14px; color: var(--c-muted); }
.presets { display: grid; gap: 10px; }
.preset { display: flex; align-items: center; justify-content: center; min-height: 42px; padding: 8px; border: 1px solid var(--c-accent-line); border-radius: var(--r-btn); background: var(--c-bg); color: var(--c-accent-dark); font-size: 13.5px; font-weight: var(--weight-bold); }
.preset-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 6px; }
.preset.is-picked { background: var(--c-muted); color: var(--c-white); border-color: var(--c-muted); }
.confirm { position: relative; display: flex; align-items: center; justify-content: center; min-height: 42px; border-radius: var(--r-btn); background: var(--c-accent); color: var(--c-white); font-size: 13.5px; font-weight: var(--weight-bold); box-shadow: var(--shadow-btn); }
.cursor { position: absolute; right: 8px; bottom: -12px; width: 18px; height: 22px; filter: var(--shadow-cursor); }
.cursor path { fill: var(--c-ink); stroke: var(--c-white); stroke-width: 1.5; stroke-linejoin: round; }
.steps-peek { max-width: var(--wrap); margin-inline: auto; padding: 40px var(--gutter) 64px; text-align: center; }

/* Tab 与功能手风琴共用 aria 状态。 */
.tabs { min-width: 0; }
.tab-list, [role="tablist"].tab-list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 24px; padding: 6px; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); }
.tab { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border: 1px solid var(--c-clear); border-radius: var(--r-btn); background: var(--c-clear); color: var(--c-muted); font-weight: var(--weight-semibold); }
.tab:hover { background: var(--c-bg); color: var(--c-ink); }
.tab[aria-selected="true"] { background: var(--c-accent); color: var(--c-white); box-shadow: var(--shadow-btn); }
.tab-panel { min-width: 0; }
.feature-tabs { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); column-gap: 64px; align-items: start; }
.feature-list { display: contents; }
.feature-entry { grid-column: 1; border-bottom: 1px solid var(--c-border); }
.feature-entry:nth-child(1) { grid-row: 1; }
.feature-entry:nth-child(2) { grid-row: 2; }
.feature-entry:nth-child(3) { grid-row: 3; }
.feature-entry:nth-child(4) { grid-row: 4; }
.feature-entry:nth-child(5) { grid-row: 5; }
.feature-tab { display: flex; width: 100%; align-items: center; gap: 14px; min-height: 78px; padding: 20px 0; border: 0; background: var(--c-bg); color: var(--c-muted); text-align: left; font-size: var(--size-h3); font-weight: var(--weight-heavy); }
.feature-tab svg { width: 25px; height: 25px; flex-shrink: 0; }
.feature-tab[aria-selected="true"] { color: var(--c-ink); }
.feature-copy { display: none; padding-bottom: 28px; color: var(--c-muted); line-height: 1.9; }
.feature-entry:has(.feature-tab[aria-selected="true"]) { border-bottom: 3px solid var(--c-accent); }
.feature-tab[aria-selected="true"] + .feature-copy { display: block; }
.geometry-tray { grid-column: 2; grid-row: 1 / 6; align-self: stretch; display: grid; align-items: center; min-height: 530px; padding: 54px 32px; border-radius: var(--r-float); background: var(--c-panel); color: var(--c-ink); isolation: isolate; overflow: hidden; }
.geometry-tray::before { content: ""; position: absolute; top: -60px; left: -65px; width: 310px; height: 290px; z-index: -1; transform: rotate(-35deg); border-radius: var(--r-float); background: linear-gradient(145deg, var(--c-orchid), var(--c-orchid-light)); color: var(--c-ink); }
.geometry-tray::after { content: ""; position: absolute; right: -170px; bottom: -40px; z-index: -1; width: 380px; height: 380px; border-radius: var(--r-circle); background: linear-gradient(155deg, var(--c-sky), var(--c-accent)); color: var(--c-ink); }
.settings-card { padding: 30px; border: 1px solid var(--c-border); border-radius: var(--r-float); background: var(--c-bg); color: var(--c-ink); box-shadow: var(--shadow-float); }
.settings-card h3 { margin-bottom: 24px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; margin-top: 12px; padding: 14px 16px; border: 1px solid var(--c-border); border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-ink); font-size: var(--size-small); }
.setting-row svg { width: 18px; height: 18px; }
.switch { display: inline-flex; align-items: center; width: 38px; height: 22px; padding: 3px; border-radius: var(--r-pill); background: var(--c-border-strong); color: var(--c-ink); flex-shrink: 0; }
.switch::after { content: ""; width: 16px; height: 16px; border-radius: var(--r-circle); background: var(--c-white); color: var(--c-ink); box-shadow: var(--shadow-chip); }
.switch.is-on { justify-content: flex-end; background: var(--c-accent); color: var(--c-white); }

/* 目录必须直接置于覆盖全部章节的长内容容器中。 */
.toc { position: sticky; top: calc(var(--topbar-h) + 12px); z-index: 10; display: flex; flex-wrap: wrap; gap: 8px; max-width: 100%; margin-bottom: 32px; padding: 10px; overflow-x: visible; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); box-shadow: var(--shadow-chip); overscroll-behavior-inline: contain; }
.toc a { display: inline-flex; align-items: center; flex-shrink: 0; min-height: 44px; padding: 10px 16px; border-radius: var(--r-pill); font-size: var(--size-small); color: var(--c-muted); white-space: nowrap; }
.toc a:hover, .toc a[aria-current="location"] { background: var(--c-panel-2); color: var(--c-accent-dark); }
.toc.is-static { position: static; }
.faq-item { margin-top: 12px; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); }
.faq-item summary { position: relative; min-height: 64px; padding: 20px 58px 20px 24px; cursor: pointer; font-weight: var(--weight-bold); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 24px; top: 18px; font-family: var(--font-mono); font-size: 22px; color: var(--c-accent-dark); }
.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { border-bottom: 1px solid var(--c-border); }
.faq-answer { padding: 20px 24px 24px; color: var(--c-muted); line-height: 1.9; }
.term-card { min-width: 0; padding: 28px; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); }
.term-card__name { margin-bottom: 8px; font-size: var(--size-h3); font-weight: var(--weight-heavy); }
.term-card__alias { display: block; margin-bottom: 16px; font-family: var(--font-mono); font-size: 12px; color: var(--c-muted); overflow-wrap: anywhere; }
.term-card p { color: var(--c-muted); }
.badges { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.badge, .tag { display: inline-flex; align-items: center; gap: 6px; max-width: 100%; padding: 4px 10px; border: 1px solid var(--c-border); border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-muted); font-size: 12px; font-weight: var(--weight-semibold); overflow-wrap: anywhere; }
.badge--first { background: var(--c-accent); color: var(--c-white); border-color: var(--c-accent); }
.badge--recommended { background: var(--c-panel-2); color: var(--c-accent-dark); border-color: var(--c-accent-line); }
.badge--retired { background: var(--c-panel); color: var(--c-muted); border-style: dashed; }
.badge--warning { background: var(--c-panel); color: var(--c-ink); }
.badge--warning::before { content: ""; width: 7px; height: 7px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-warn); color: var(--c-ink); }
.client-card { padding: 32px; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); box-shadow: var(--shadow-back); min-width: 0; }
.client-card__head { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-bottom: 20px; }
.client-card__icon { width: 56px; height: 56px; flex-shrink: 0; }
.client-card__head h3 { margin: 0; }
.client-card__description { color: var(--c-muted); margin-bottom: 24px; }
.client-card__meta { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 20px; color: var(--c-muted); font-size: var(--size-small); }
.article-card { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; padding: 28px; min-width: 0; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); box-shadow: var(--shadow-chip); }
.article-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; color: var(--c-muted); font-size: 12px; }
.article-card h3 { margin: 0; font-size: var(--size-h3); line-height: 1.5; }
.article-card h3 a:hover { color: var(--c-accent-dark); }
.article-card p { color: var(--c-muted); }
.article-card__link { margin-top: auto; padding-top: 8px; color: var(--c-accent-dark); font-size: var(--size-small); font-weight: var(--weight-bold); }
.callout { margin: 24px 0; padding: 22px 24px; border: 1px solid var(--c-border); border-left: 4px solid var(--c-accent); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); line-height: 1.85; }
.callout strong { display: block; margin-bottom: 6px; }
.callout--warn { border-left-color: var(--c-warn); }
.callout--error { border-left-color: var(--c-error); }
.callout--success { border-left-color: var(--c-success); }
.table-scroll { overflow-x: auto; max-width: 100%; min-width: 0; margin-block: 24px; border: 1px solid var(--c-border); border-radius: var(--r-card); overscroll-behavior-inline: contain; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: var(--size-small); }
.data-table th, .data-table td, .prose table th, .prose table td, .article-body table th, .article-body table td {
  min-width: 7em;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-border);
  text-align: left;
  vertical-align: top;
  overflow-wrap: normal;
  word-break: normal;
}
.data-table th, .prose table th, .article-body table th { background: var(--c-panel); color: var(--c-ink); font-weight: var(--weight-bold); }
.data-table td, .prose table td, .article-body table td { background: var(--c-bg); color: var(--c-ink); }
.data-table tr:last-child td { border-bottom: 0; }
.prose table, .article-body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; min-width: 0; border-collapse: collapse; margin-block: 24px; }
.data-table code, .prose table code, .article-body table code { overflow-wrap: anywhere; }
.download-guide { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; margin-top: 48px; padding: 28px; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); }
.download-guide__copy { min-width: 0; flex: 1 1 240px; }
.download-guide h3 { margin-bottom: 8px; }
.download-guide p { color: var(--c-muted); }
.dl-fab { position: fixed; right: 24px; bottom: 24px; z-index: 30; display: inline-flex; align-items: center; gap: 8px; min-height: 48px; max-width: calc(100% - 36px); padding: 12px 20px 12px 16px; border-radius: var(--r-pill); background: var(--c-accent); color: var(--c-white); font-size: 14.5px; font-weight: var(--weight-bold); box-shadow: var(--shadow-btn), var(--shadow-float); transition: background-color var(--ease-ui); }
.dl-fab:hover { background: var(--c-accent-dark); color: var(--c-white); }
.dl-fab svg { width: 18px; height: 18px; }

/* 预览色板仅用于展示，不给正文设置色彩。 */
.palette-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.swatch { min-width: 0; border: 1px solid var(--c-border); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); overflow: hidden; }
.swatch__paint { height: 76px; border-bottom: 1px solid var(--c-border); }
.swatch code { display: block; padding: 12px; font-size: 12px; color: var(--c-ink); }
.swatch--bg { background: var(--c-bg); color: var(--c-ink); }
.swatch--panel { background: var(--c-panel); color: var(--c-ink); }
.swatch--panel-2 { background: var(--c-panel-2); color: var(--c-ink); }
.swatch--border { background: var(--c-border); color: var(--c-ink); }
.swatch--border-strong { background: var(--c-border-strong); color: var(--c-ink); }
.swatch--accent { background: var(--c-accent); color: var(--c-white); }
.swatch--accent-dark { background: var(--c-accent-dark); color: var(--c-white); }
.swatch--accent-line { background: var(--c-accent-line); color: var(--c-ink); }
.swatch--ink { background: var(--c-ink); color: var(--c-white); }
.swatch--muted { background: var(--c-muted); color: var(--c-white); }
.swatch--success { background: var(--c-success); color: var(--c-ink); }
.swatch--success-soft { background: var(--c-success-soft); color: var(--c-ink); }
.swatch--warn { background: var(--c-warn); color: var(--c-ink); }
.swatch--error { background: var(--c-error); color: var(--c-white); }
.swatch--white { background: var(--c-white); color: var(--c-ink); }
.swatch--ghost { background: var(--c-ghost); color: var(--c-ink); }
.swatch--ghost-edge { background: var(--c-ghost-edge); color: var(--c-ink); }
.swatch--sky { background: var(--c-sky); color: var(--c-ink); }
.swatch--orchid { background: var(--c-orchid); color: var(--c-ink); }
.swatch--orchid-light { background: var(--c-orchid-light); color: var(--c-ink); }
.swatch--veil { background: var(--c-veil); color: var(--c-ink); }
.swatch--clear { background: var(--c-clear); color: var(--c-ink); }
.preview-label { margin-bottom: 20px; font-family: var(--font-mono); font-size: 12px; color: var(--c-muted); }

@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); min-height: 0; gap: 0; }
  .hero__copy { padding-top: 56px; padding-bottom: 24px; }
  .hero__stage { justify-content: center; padding-top: 96px; padding-bottom: 96px; }
  .stack { margin-right: 0; width: 100%; max-width: 760px; transform: rotate(-1.2deg); }
  .geo-sun { width: 440px; height: 440px; top: 18px; transform: translateX(-50%); }
  .geo-tri { width: 360px; height: 390px; right: -110px; bottom: 10px; }
  .feature-tabs { column-gap: 28px; }
  .geometry-tray { padding: 40px 22px; }
  .settings-card { padding: 24px; }
}
@media (max-width: 768px) {
  .hero__title { font-size: clamp(24px, 4vw, 30px); }
  .win__body { grid-template-columns: 180px minmax(0, 1fr); }
  .col:last-child { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--c-border); }
  .presets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .palette-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .hero__title { font-size: clamp(26px, 7vw, 30px); letter-spacing: -0.02em; }
  .hero__lead { font-size: 15.5px; }
  .hero__stage { padding-top: 72px; padding-bottom: 72px; }
  .geo-sun { width: 300px; height: 300px; top: 20px; }
  .geo-tri { width: 240px; height: 260px; right: -80px; bottom: 6px; }
  .stack { transform: none; }
  .stack__back { left: 22px; right: 22px; top: -16px; }
  .win__head { padding: 20px 20px 18px; flex-wrap: wrap; }
  .win__title { font-size: 20px; }
  .win__body { grid-template-columns: minmax(0, 1fr); }
  .col { padding: 18px 20px 20px; }
  .col + .col { border-left: 0; border-top: 1px solid var(--c-border); }
  .presets { grid-template-columns: minmax(0, 1fr); }
  .platforms { gap: 8px 18px; }
  .proto { flex-direction: row; flex-wrap: wrap; }
  .proto__chip { padding-inline: 10px; font-size: 12px; }
  .tab-list { gap: 4px; }
  .tab { flex: 1 1 auto; padding-inline: 12px; }
  .feature-tabs { grid-template-columns: minmax(0, 1fr); }
  .feature-entry { grid-column: 1; }
  .feature-entry:nth-child(1) { grid-row: 1; }
  .feature-entry:nth-child(2) { grid-row: 3; }
  .feature-entry:nth-child(3) { grid-row: 5; }
  .feature-entry:nth-child(4) { grid-row: 7; }
  .feature-entry:nth-child(5) { grid-row: 9; }
  .geometry-tray { grid-column: 1; grid-row: 2; min-height: 330px; margin-block: 20px; padding: 34px 18px; }
  .feature-tabs[data-feature-position="2"] .geometry-tray { grid-row: 4; }
  .feature-tabs[data-feature-position="3"] .geometry-tray { grid-row: 6; }
  .feature-tabs[data-feature-position="4"] .geometry-tray { grid-row: 8; }
  .feature-tabs[data-feature-position="5"] .geometry-tray { grid-row: 10; }
  .feature-tab { min-height: 68px; font-size: 20px; }
  .settings-card { padding: 20px; }
  .setting-row { padding-inline: 12px; gap: 10px; border-radius: var(--r-btn); }
  .client-card, .article-card, .term-card { padding: 22px; }
  .callout { padding: 20px; }
  .dl-fab { right: 14px; bottom: 14px; min-height: 44px; font-size: 13.5px; padding-block: 10px; }
  .palette-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}