/* 关于我们 /about/（第三轮 U4c：按效果图 website-global/design-v3/prototype/about.html + about.css，ABOUT_LAYOUT.md）。
   渲染在 inc/about.php；区块渲染时按句柄 vz-about 加载，在 v3.css 之后。颜色只用令牌；思源黑体（--vz-font-family-heading）只给 700 字重的标题。
   品牌红只做点缀：当前段下划线、里程碑竖线、年份索引当前项、图标线条、链接箭头、当前一程标签、寄语与末句竖线。
   一页长页加吸顶分段导航：吸顶区 = 页头 + 分段导航（桌面 80 + 64，手机 56 + 48）；html 的 scroll-padding-top 同时管锚点落点与键盘焦点。
   桌面先写（与效果图同）；1099 以下平板收紧；767 以下手机单独排版（首屏图上字下、事实两列、展开全文、横滑块、年份跳转条、通栏电话与邮箱）。点击区不小于 44。 */

:root { --ab-snav: 48px; }
@media (min-width: 768px) { :root { --ab-snav: 64px; } }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--vz-v3-hdr) + 1px + var(--ab-snav) + 8px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.vz-about {
	--ab-ink: var(--vz-color-text-primary);
	--ab-ink-2: var(--vz-v3-ink-2);
	--ab-muted: var(--vz-color-text-muted);
	--ab-line: var(--vz-color-border-default);
	--ab-subtle: var(--vz-color-surface-subtle);
	--ab-paper: var(--vz-color-surface-page);
	--ab-red: var(--vz-color-brand-red);
	--ab-dark-2: var(--vz-color-surface-dark-raised);
	--ab-dark-line: var(--vz-color-neutral-800);
	--ab-on-dark: var(--vz-color-text-inverse);
	--ab-on-dark-2: var(--vz-color-neutral-400);
	--ab-gutter: var(--vz-layout-margin);
	--ab-latin: var(--vz-font-family-latin);
	--ab-head: var(--vz-font-family-heading);
	--ab-zh: var(--vz-font-family-zh);
}
.vz-about > * { margin-block: 0; }
:where(.vz-about) :where(p, h1, h2, h3, h4, ul, ol, dl, dd, figure, blockquote) { margin: 0; }
:where(.vz-about) :where(ul[role="list"], ol) { list-style: none; padding: 0; }
:where(.vz-about) a { color: inherit; text-decoration: none; }
.vz-about .vz-home-phrase { display: inline-block; max-width: 100%; } /* 标题按中文逗号分句，每句不在中间断行 */
.ab-craft-sec .ab-head h2 .vz-home-phrase, .ab-today__h .vz-home-phrase { display: block; } /* 效果图在逗号后断行 */
.ab-hero__grid > *, .ab-facts > *, .ab-story > *, .ab-filerow > *, .ab-posts > *, .ab-craft > *, .ab-gallery > *, .ab-co > *,
.ab-scale > *, .ab-techs > *, .ab-tl > *, .ab-decades__row > *, .ab-today > *, .ab-contact > *, .ab-routes > *, .ab-lines > * { min-width: 0; }

/* ---- 图位：线描在下、授权图在上（与乐器探索页 instruments.css 同一组规则；本页不加载那份样式） ---- */
:where(.vz-about) .vz-inst-fig { position: relative; display: block; overflow: hidden; background: var(--ab-subtle); }
:where(.vz-about) .vz-inst-ph { position: absolute; inset: 0; display: grid; place-items: center; background: var(--ab-subtle); color: var(--vz-color-neutral-400); }
:where(.vz-about) .vz-inst-ph svg { display: block; width: auto; height: 62%; max-width: 80%; }
:where(.vz-about) .vz-inst-ph--wide svg { width: 56%; height: auto; max-height: 56%; }
:where(.vz-about) .vz-inst-ph--dark { background: var(--ab-dark-2); color: var(--vz-color-neutral-700); }
:where(.vz-about) .vz-inst-fig:has(> .vz-inst-fig__media) > .vz-inst-ph { visibility: hidden; }
:where(.vz-about) .vz-inst-fig__media { position: absolute; inset: 0; display: block; }
:where(.vz-about) .vz-inst-fig__media img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }

/* ---- 通用小件 ---- */
.ab-date { font-family: var(--ab-latin); font-size: 13px; font-variant-numeric: tabular-nums; letter-spacing: 0.02em; color: var(--ab-muted); white-space: nowrap; }
.ab-num { font-family: var(--ab-latin); font-variant-numeric: tabular-nums; }
.vz-about .ab-more-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 14px; font-weight: 500; color: var(--ab-ink); }
.ab-more-link::after { content: "→"; color: var(--ab-red); transition: transform 0.15s; }
.ab-more-link:hover::after { transform: translateX(4px); }
.ab-zh { margin-left: 6px; font-size: 12px; font-weight: 400; color: var(--ab-muted); white-space: nowrap; }
.vz-v3-dark .ab-zh { color: var(--ab-on-dark-2); }
.ab-live { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ab-muted); }
.ab-live::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--ab-ink-2); }
.vz-about .j-type { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; letter-spacing: 0.04em; line-height: 1.5; color: var(--ab-ink-2); white-space: nowrap; }
.vz-about .j-type::before { content: ""; flex: none; width: 6px; height: 6px; background: var(--ab-red); }
.ab-head { display: grid; gap: 16px; max-width: 760px; margin-bottom: 48px; }
.vz-about .ab-head__lead { color: var(--ab-muted); }
.ab-cap { font-size: 13px; line-height: 1.6; color: var(--ab-muted); }

/* ---------- 1 首屏：左标题与导语，右图；下面四格事实 ---------- */
.ab-hero { padding: 72px 0 56px; }
.ab-hero__grid { display: grid; grid-template-columns: 5fr 7fr; gap: 72px; align-items: center; }
.ab-hero__text { display: grid; gap: 24px; justify-items: start; }
.vz-about .ab-hero__lead { max-width: 25em; color: var(--ab-ink-2); }
.vz-about .ab-hero__img { aspect-ratio: 16 / 11; }
/* 按实际个数均分一行（实时数为 0 的那格不出时，剩下三格占满） */
.ab-facts { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); margin-top: 64px; border-top: 1px solid var(--ab-ink); }
.ab-fact { display: grid; gap: 6px; align-content: start; justify-items: start; padding: 28px 28px 4px 0; }
.ab-fact + .ab-fact { padding-left: 28px; border-left: 1px solid var(--ab-line); }
.vz-about .ab-fact__n { display: flex; align-items: baseline; gap: 8px; }
.ab-fact__n b { font-family: var(--ab-latin); font-size: 46px; font-weight: 600; line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.ab-fact__n span { font-size: 17px; font-weight: 600; color: var(--ab-ink); }
.vz-about .ab-fact > p:not(.ab-fact__n) { font-size: 13px; line-height: 1.6; color: var(--ab-muted); }
.vz-about .ab-fact .ab-more-link { font-size: 13px; }
.ab-fact > .ab-live { margin-top: 4px; padding: 12px 0; }
.ab-fact__links { display: flex; flex-wrap: wrap; gap: 0 18px; }

/* ---------- 2 吸顶分段导航：左页名，中间四段，右客服热线 ---------- */
.ab-snav { position: sticky; top: calc(var(--vz-v3-hdr) + 1px); z-index: 40; background: var(--ab-paper); border-top: 1px solid var(--ab-line); border-bottom: 1px solid var(--ab-line); }
.admin-bar .ab-snav { top: calc(var(--vz-v3-hdr) + 33px); }
@media (max-width: 782px) { .admin-bar .ab-snav { top: calc(var(--vz-v3-hdr) + 47px); } }
.ab-snav__in { display: flex; align-items: center; height: var(--ab-snav); gap: 56px; }
.vz-about .ab-snav__name { flex: none; display: inline-flex; align-items: center; min-height: 44px; font-size: 17px; font-weight: 600; letter-spacing: 0.02em; }
.ab-snav__links { display: flex; gap: 40px; height: 100%; }
.vz-about .ab-snav__links a { position: relative; display: flex; align-items: center; justify-content: center; min-width: 44px; font-size: 15px; color: var(--ab-muted); white-space: nowrap; transition: color 0.2s; }
.vz-about .ab-snav__links a:hover, .vz-about .ab-snav__links a.is-on { color: var(--ab-ink); }
.ab-snav__links a.is-on::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--ab-red); }
.ab-snav__short { display: none; }
.vz-about .ab-snav__tel { flex: none; margin-left: auto; display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: 14px; color: var(--ab-ink-2); }
.ab-snav__tel small { font-size: 13px; color: var(--ab-muted); }
.ab-snav__tel b { font-family: var(--ab-latin); font-weight: 600; color: var(--ab-ink); }
.ab-snav__tel .ab-icon { color: var(--ab-red); }

/* ---------- 3 品牌故事 ---------- */
.ab-story { display: grid; grid-template-columns: 5fr 7fr; gap: 72px; }
.ab-story__head { display: grid; gap: 20px; align-content: start; }
.vz-about .ab-story__lead { color: var(--ab-ink-2); }
.ab-story__body { display: grid; gap: 18px; align-content: start; }
.vz-about .ab-story__body .vz-t-body { color: var(--ab-ink-2); }
.ab-story__more > p + p { margin-top: 18px; }
.ab-story__more > summary { display: none; }
.vz-about .ab-story__vow { margin-top: 28px; padding-left: 20px; border-left: 2px solid var(--ab-red); font-size: 19px; font-weight: 600; line-height: 1.8; color: var(--ab-ink); }
.vz-about .ab-story__to { display: flex; flex-wrap: wrap; align-items: center; gap: 0 16px; padding: 4px 0; border-top: 1px solid var(--ab-line); border-bottom: 1px solid var(--ab-line); font-size: 14px; color: var(--ab-muted); }
.ab-story__to .vz-v3-link { color: var(--ab-ink); }

.ab-filerow { display: grid; grid-template-columns: 7fr 5fr; gap: 32px; margin-top: 80px; }
.ab-filerow--one { grid-template-columns: minmax(0, 1fr); }
.ab-file { padding: 32px 36px 28px; border: 1px solid var(--ab-line); border-top: 2px solid var(--ab-ink); }
.ab-file__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 0 16px; margin-bottom: 10px; }
.ab-file dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; margin: 0; }
.ab-file dl > div { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--ab-line); }
.ab-file dt { font-size: 13px; line-height: 1.7; color: var(--ab-muted); }
.ab-file dd { font-size: 15px; line-height: 1.6; overflow-wrap: anywhere; }
.ab-file dd a { display: inline-block; padding: 10px 0; margin: -10px 0; text-decoration: underline; text-decoration-color: var(--ab-line); text-decoration-thickness: 1px; text-underline-offset: 5px; transition: text-decoration-color 0.2s; } /* 点击区 44，负外边距不撑高这一行 */
.ab-file dd a:hover { text-decoration-color: var(--ab-ink); }
.ab-std { display: flex; flex-direction: column; gap: 18px; padding: 32px 36px 28px; background: var(--ab-subtle); }
.vz-about .ab-std__head { margin-bottom: 0; }
.ab-std__words { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ab-line); border-bottom: 1px solid var(--ab-line); }
.ab-std__words--1 { grid-template-columns: minmax(0, 1fr); }
.ab-std__words--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ab-std__words--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ab-std__words li { padding: 22px 0 20px; font-family: var(--ab-head); font-size: 32px; font-weight: 700; line-height: 1.2; text-align: center; }
.ab-std__words li + li { border-left: 1px solid var(--ab-line); }
.vz-about .ab-std__rule { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; font-size: 13px; color: var(--ab-muted); }
.ab-std__rule b { margin-right: 4px; font-weight: 500; color: var(--ab-ink-2); }
.ab-std__rule i { display: inline-flex; align-items: center; min-height: 30px; padding: 0 12px; background: var(--ab-paper); border: 1px solid var(--ab-line); font-style: normal; font-size: 13px; color: var(--ab-ink); }

.ab-posts__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px; margin: 80px 0 24px; }
/* 卡片与资讯页 .jn-card--text 同一组件（news.css 同名规则）；按实际篇数均分，不足 3 篇时右栏 品牌资料 往左补位 */
.ab-posts { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 24px; }
.vz-about .jn-card { position: relative; display: flex; flex-direction: column; }
.vz-about .jn-card--text { min-height: 248px; padding: 28px 28px 24px; background: var(--ab-subtle); }
.vz-about .jn-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-bottom: 16px; }
.vz-about .jn-card__title { font-family: var(--ab-zh); font-weight: 700; font-size: 21px; line-height: 1.5; overflow-wrap: anywhere; text-wrap: pretty; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.jn-card__link::after { content: ""; position: absolute; inset: 0; z-index: 1; } /* 整卡可点：链接在标题上，铺满卡片 */
.vz-about .jn-card:hover .jn-card__title, .jn-card__link:focus-visible { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.jn-card__link:focus-visible { outline: none; }
.vz-about .jn-card:has(.jn-card__link:focus-visible) { outline: 2px solid var(--vz-color-focus-on-light); outline-offset: 4px; }
.vz-about .j-sum { margin-top: 12px; font-size: 14px; line-height: 1.7; color: var(--ab-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.vz-about .j-more { display: inline-flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 24px; font-size: 14px; font-weight: 500; color: var(--ab-ink-2); }
.vz-about .j-more::after { content: "→"; color: var(--ab-red); transition: transform 0.15s; }
.vz-about .jn-card--text:hover .j-more { color: var(--ab-ink); }
.vz-about .jn-card--text:hover .j-more::after { transform: translateX(4px); }
/* 品牌资料：资讯页 .jn-story__more 的浅色变体 */
.ab-more { align-self: stretch; display: flex; flex-direction: column; justify-content: flex-start; padding-left: 28px; border-left: 1px solid var(--ab-line); }
.vz-about .ab-more__h { margin-bottom: 6px; font-size: 13px; font-weight: 600; line-height: 1.5; letter-spacing: 0.1em; color: var(--ab-muted); }
.ab-more a { display: grid; gap: 4px; padding: 14px 0; border-bottom: 1px solid var(--ab-line); }
.ab-more a span { font-size: 15px; line-height: 1.6; color: var(--ab-ink); }
.ab-more a:hover span { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- 4 工坊与工艺：深色段 ---------- */
.ab-craft-sec .ab-head { margin-bottom: 48px; }
.ab-craft { display: grid; grid-template-columns: 7fr 5fr; gap: 72px; align-items: start; }
.vz-about .ab-video__cover { aspect-ratio: 16 / 10; background: var(--ab-dark-2); }
.ab-video__cover .vz-inst-fig__media img { opacity: 0.86; }
a.ab-video__cover:hover .vz-inst-fig__media img, .ab-video__cover[data-vz-video]:hover .vz-inst-fig__media img { transform: scale(1.03); }
.ab-video__cover .vz-video__frame { position: absolute; inset: 0; z-index: 3; width: 100%; height: 100%; border: 0; }
.ab-video__cover video { position: absolute; inset: 0; display: block; width: 100%; height: 100%; background: var(--vz-color-surface-dark); }
.ab-video__badge { position: absolute; left: 16px; top: 16px; z-index: 2; display: inline-flex; align-items: center; padding: 4px 12px; background: var(--ab-paper); color: var(--ab-ink); font-size: 12px; line-height: 1.6; letter-spacing: 0.06em; }
.ab-video__play { position: absolute; inset: 0; z-index: 1; display: grid; place-items: center; width: 100%; padding: 0; border: 0; background: transparent; cursor: pointer; }
.ab-video__play:focus-visible { outline: 2px solid var(--vz-color-focus-on-dark); outline-offset: -4px; }
.ab-play { display: grid; place-items: center; width: 72px; height: 72px; border-radius: 50%; background: var(--ab-paper); transition: transform 0.25s ease; }
.ab-play::before { content: ""; width: 0; height: 0; margin-left: 4px; border-style: solid; border-width: 10px 0 10px 16px; border-color: transparent transparent transparent var(--ab-ink); }
.ab-video__play:hover .ab-play { transform: scale(1.06); }
.ab-video__meta { display: grid; gap: 6px; margin-top: 16px; }
.vz-about .ab-video__k { font-size: 13px; color: var(--ab-on-dark-2); }
.ab-video__k .ab-date { color: var(--ab-on-dark-2); }
.vz-about .ab-video__t { font-size: 18px; font-weight: 600; line-height: 1.5; color: var(--ab-on-dark); }
.ab-video__t a { display: inline-flex; align-items: center; min-height: 44px; margin-top: -8px; }
.ab-video__t a:hover { text-decoration: underline; text-underline-offset: 5px; }
.ab-craft__text { display: grid; gap: 22px; align-content: start; }
.vz-about .ab-craft__text .vz-t-body { color: var(--ab-on-dark-2); }
.ab-quote { margin-top: 8px; padding-left: 20px; border-left: 2px solid var(--ab-red); }
.vz-about .ab-quote blockquote p { font-size: 20px; font-weight: 600; line-height: 1.7; color: var(--ab-on-dark); }
.vz-about .ab-quote__body { margin-top: 12px; font-size: 14px; line-height: 1.8; color: var(--ab-on-dark-2); }
.ab-quote figcaption { margin-top: 10px; font-size: 13px; color: var(--ab-on-dark-2); }

.ab-gallery { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 16px; margin-top: 72px; padding-top: 40px; border-top: 1px solid var(--ab-dark-line); }
.vz-about .ab-gallery__img { aspect-ratio: 4 / 3; background: var(--ab-dark-2); }
.ab-gallery figcaption { margin-top: 10px; font-size: 13px; line-height: 1.6; color: var(--ab-on-dark-2); }

.ab-scale { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); margin: 32px 0 0; border: 1px solid var(--ab-dark-line); }
.ab-scale > div { display: flex; flex-direction: column-reverse; gap: 4px; padding: 20px 24px; }
.ab-scale > div + div { border-left: 1px solid var(--ab-dark-line); }
.ab-scale dd b { font-family: var(--ab-latin); font-size: 30px; font-weight: 600; line-height: 1.1; color: var(--ab-on-dark); }
.ab-scale dd small { margin-left: 4px; font-size: 14px; color: var(--ab-on-dark-2); }
.ab-scale dt { font-size: 13px; color: var(--ab-on-dark-2); }

.ab-techs__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin: 72px 0 24px; }
.vz-about .ab-techs__head .vz-t-small { max-width: 34em; margin-top: 8px; color: var(--ab-on-dark-2); }
.ab-techs__head .vz-v3-link { flex: none; white-space: nowrap; }
/* 按实际张数均分（未发布的那张不出时，其余占满一行）；桌面另加一张「全部技术与工艺」卡 */
.ab-techs { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 16px; }
.ab-techs > li { display: flex; }
.vz-about .ab-tech { display: flex; flex: 1; flex-direction: column; gap: 10px; min-height: 236px; padding: 26px 24px 22px; background: var(--ab-dark-2); border-top: 1px solid var(--ab-dark-line); transition: border-color 0.2s; }
.vz-about .ab-tech:hover { border-top-color: var(--ab-on-dark-2); }
.ab-tech__no { font-family: var(--ab-latin), var(--ab-zh); font-size: 12px; font-weight: 600; letter-spacing: 0.1em; color: var(--ab-on-dark-2); }
.vz-about .ab-tech h4 { font-size: 19px; font-weight: 700; line-height: 1.45; color: var(--ab-on-dark); }
.vz-about .ab-tech p { font-size: 14px; line-height: 1.7; color: var(--ab-on-dark-2); }
.ab-tech__more { display: inline-flex; align-items: center; gap: 8px; margin-top: auto; font-size: 14px; font-weight: 500; color: var(--ab-on-dark); }
.ab-tech__more::after { content: "→"; color: var(--ab-red); transition: transform 0.15s; }
.ab-tech:hover .ab-tech__more::after { transform: translateX(4px); }
.vz-about .ab-tech--all { border-top-color: var(--ab-red); }
.ab-tech__topics { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.ab-tech__topics i { padding: 2px 10px; border: 1px solid var(--ab-dark-line); font-style: normal; font-size: 12px; color: var(--ab-on-dark-2); }

/* ---------- 5 发展历程 ---------- */
.ab-tl { display: grid; grid-template-columns: 3fr 9fr; gap: 64px; }
.ab-years { position: sticky; top: calc(var(--vz-v3-hdr) + 1px + var(--ab-snav) + 32px); align-self: start; }
.vz-about .ab-years > p { margin-bottom: 10px; font-size: 13px; color: var(--ab-muted); }
.ab-years ol { border-top: 1px solid var(--ab-line); }
.vz-about .ab-years a { display: flex; justify-content: space-between; align-items: center; min-height: 44px; padding: 0 0 0 14px; border-bottom: 1px solid var(--ab-line); font-family: var(--ab-latin); font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--ab-ink-2); }
.ab-years a small { font-family: var(--ab-zh); font-size: 12px; font-weight: 400; color: var(--ab-muted); }
.vz-about .ab-years a:hover { color: var(--ab-ink); }
.vz-about .ab-years a.is-on { position: relative; color: var(--ab-red); }
.ab-years a.is-on::before { content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 2px; background: var(--ab-red); }

.ab-yearlist { border-top: 1px solid var(--ab-ink); }
.ab-year { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 32px; padding: 28px 0; border-bottom: 1px solid var(--ab-line); scroll-margin-top: 24px; }
.vz-about .ab-year__n { font-family: var(--ab-latin); font-size: 40px; font-weight: 600; line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.ab-evs { display: grid; }
.ab-ev { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 0 20px; align-items: baseline; padding: 0 0 4px; }
.ab-ev + .ab-ev { padding-top: 4px; border-top: 1px dashed var(--ab-line); }
.ab-ev > .ab-date { grid-row: 1 / span 2; }
.ab-ev__t { font-size: 16px; line-height: 1.6; }
.ab-ev__t a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: underline; text-decoration-color: var(--ab-line); text-decoration-thickness: 1px; text-underline-offset: 5px; transition: text-decoration-color 0.2s; } /* 点击区 44 */
.ab-ev__t > :only-child:not(a), .ab-ev__t:not(:has(a)) { display: inline-flex; align-items: center; min-height: 44px; }
.ab-ev__t a:hover { text-decoration-color: var(--ab-ink); }
.ab-ev__sub { grid-column: 2; display: flex; flex-wrap: wrap; align-items: center; gap: 0 16px; margin-top: -8px; font-size: 13px; line-height: 1.6; color: var(--ab-muted); }
.ab-ev__sub:not(:has(a)) { margin-top: -4px; padding-bottom: 10px; }
.ab-ev__sub a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ab-ink-2); }
.ab-ev__sub a::after { content: "\00a0→"; color: var(--ab-red); }
.ab-ev__sub a:hover { color: var(--ab-ink); text-decoration: underline; text-underline-offset: 4px; }
.vz-about .ab-ev > .j-type { grid-column: 3; grid-row: 1; font-size: 12px; color: var(--ab-muted); }
.ab-ev--key .ab-ev__t { position: relative; font-family: var(--ab-head); font-size: 20px; font-weight: 700; }
.ab-ev--key .ab-ev__t::before { content: ""; position: absolute; left: -12px; top: 6px; bottom: 6px; width: 2px; background: var(--ab-red); }

.ab-decades { margin-top: 72px; padding: 44px 48px 40px; background: var(--ab-subtle); }
.ab-decades__head { display: grid; gap: 8px; margin-bottom: 28px; }
.vz-about .ab-decades__src { font-size: 14px; line-height: 1.7; color: var(--ab-muted); }
.ab-decades__src a { color: var(--ab-ink-2); border-bottom: 1px solid var(--ab-line); }
.ab-decades__src a:hover { border-color: var(--ab-ink); }
.ab-decades__row { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); background: var(--ab-paper); }
.ab-dec { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 28px 28px 26px; }
.ab-dec + .ab-dec { border-left: 1px solid var(--ab-line); }
.vz-about .ab-dec__k { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 13px; letter-spacing: 0.06em; color: var(--ab-muted); }
.ab-dec__k > span { display: inline-flex; align-items: center; gap: 8px; }
.ab-dec__k b { font-family: var(--ab-latin); font-weight: 600; color: var(--ab-ink-2); }
.vz-about .ab-dec h4 { margin-top: 6px; font-family: var(--ab-head); font-size: 26px; font-weight: 700; line-height: 1.3; }
.ab-dec h4 small { display: block; margin-top: 2px; font-family: var(--ab-latin); font-size: 14px; font-weight: 500; letter-spacing: 0.02em; color: var(--ab-muted); }
.vz-about .ab-dec__q { margin-top: 6px; padding-top: 14px; border-top: 1px solid var(--ab-line); font-size: 15px; line-height: 1.75; color: var(--ab-ink-2); }
.ab-dec--now { box-shadow: inset 0 2px 0 var(--ab-red); }
.ab-tag { display: inline-block; padding: 1px 8px; border: 1px solid var(--ab-red); font-size: 12px; line-height: 1.6; letter-spacing: 0.06em; color: var(--ab-red); }
.vz-about .ab-decades__sum { margin-top: 22px; font-size: 15px; color: var(--ab-ink-2); }

.ab-today { display: grid; grid-template-columns: 5fr 7fr; gap: 72px; align-items: center; margin-top: 96px; padding-top: 56px; border-top: 1px solid var(--ab-line); }
.ab-decades + .ab-today { margin-top: 96px; }
.ab-today__text { display: grid; gap: 18px; justify-items: start; }
.vz-about .ab-today__h { font-family: var(--ab-head); font-size: 30px; font-weight: 700; line-height: 1.35; }
.vz-about .ab-today__text .vz-t-body { color: var(--ab-muted); }
.vz-about .ab-stat { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font-size: 14px; color: var(--ab-ink-2); }
.ab-stat b { font-family: var(--ab-latin); font-weight: 600; font-variant-numeric: tabular-nums; }
.ab-stat i { font-style: normal; color: var(--ab-line); }
.ab-fams { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px 14px; }
.vz-about .ab-fams a { display: grid; gap: 8px; font-size: 14px; line-height: 1.4; color: var(--ab-ink-2); }
.vz-about .ab-fams__img { aspect-ratio: 1; }
.ab-fams a:hover .vz-inst-fig__media img { transform: scale(1.05); }
.ab-fams a:hover > span:last-child { color: var(--ab-ink); text-decoration: underline; text-underline-offset: 4px; }
.ab-fams__arrow { display: grid; place-items: center; aspect-ratio: 1; background: var(--ab-subtle); font-size: 24px; color: var(--ab-red); }

/* ---------- 6 联系我们：浅灰段。上：标题 + 电话、邮箱；中：按事由；下：公司信息一行 ---------- */
.ab-contact { display: grid; grid-template-columns: 5fr 7fr; gap: 72px; align-items: end; }
.ab-contact__main { display: grid; gap: 18px; align-content: start; }
.vz-about .ab-contact__main .vz-t-body { color: var(--ab-muted); }
.ab-lines { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 16px; }
.ab-lines--1 { grid-template-columns: minmax(0, 1fr); }
.ab-line { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 2px 14px; align-items: center; padding: 24px 24px 22px; background: var(--ab-paper); border-top: 2px solid var(--ab-ink); }
.ab-line .ab-icon { grid-row: 1 / span 2; color: var(--ab-red); }
.ab-line small { font-size: 13px; color: var(--ab-muted); }
.ab-line b { grid-column: 2; font-family: var(--ab-latin); font-size: 22px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ab-line::after { content: "→"; grid-column: 3; grid-row: 1 / span 2; color: var(--ab-red); }
.ab-line:hover b { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.vz-about .ab-lines__note { grid-column: 1 / -1; font-size: 13px; line-height: 1.7; color: var(--ab-muted); }

.vz-about .ab-routes__head { margin: 56px 0 16px; }
.ab-routes { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 16px; }
.ab-route { display: grid; grid-template-columns: 40px minmax(0, 1fr); grid-template-rows: auto auto 1fr; gap: 4px 14px; padding: 26px 26px 18px; background: var(--ab-paper); }
.ab-route__no { grid-row: 1 / span 3; padding-top: 4px; font-family: var(--ab-latin); font-size: 13px; font-weight: 600; letter-spacing: 0.08em; color: var(--ab-red); }
.ab-route > :not(.ab-route__no) { grid-column: 2; }
.vz-about .ab-route h4 { font-size: 18px; font-weight: 600; line-height: 1.5; }
.vz-about .ab-route p { font-size: 14px; line-height: 1.7; color: var(--ab-muted); }
.vz-about .ab-route p.ab-route__acts { display: flex; flex-wrap: wrap; align-self: end; gap: 0 22px; margin-top: 8px; color: var(--ab-ink); }

.vz-about .ab-co__head { margin: 56px 0 12px; }
/* 按实际项数均分一行（地址、受理时间不出时，公司与总部各占一半） */
.ab-co { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 0 32px; margin: 0; border-top: 1px solid var(--ab-line); }
.ab-co > div { display: grid; gap: 4px; align-content: start; padding: 14px 0; border-bottom: 1px solid var(--ab-line); }
.ab-co dt { font-size: 13px; color: var(--ab-muted); }
.ab-co dd { font-size: 15px; }

/* ---------- 平板 ---------- */
@media (max-width: 1099px) and (min-width: 768px) {
	.ab-hero__grid, .ab-story, .ab-craft, .ab-today, .ab-contact { gap: 40px; }
	.ab-hero__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } /* 平板文字栏放得下 H1 一行七字 */
	.ab-facts, .ab-posts, .ab-gallery, .ab-routes, .ab-co { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.ab-facts--3 > :last-child, .ab-posts--3 > :last-child, .ab-gallery--3 > :last-child, .ab-routes--3 > :last-child, .ab-co--3 > :last-child { grid-column: 1 / -1; }
	.ab-fact:nth-child(odd) { padding-left: 0; border-left: 0; }
	.ab-fact:nth-child(n + 3) { border-top: 1px solid var(--ab-line); }
	.ab-filerow { grid-template-columns: minmax(0, 1fr); }
	.ab-techs { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.ab-tl { grid-template-columns: minmax(0, 1fr); }
	.ab-years { position: static; }
	.ab-years ol { display: flex; flex-wrap: wrap; gap: 8px; border: 0; }
	.vz-about .ab-years a { gap: 6px; padding: 0 12px; border: 1px solid var(--ab-line); }
	.ab-years a.is-on::before { display: none; }
	.ab-decades__row { grid-auto-flow: row; grid-template-columns: minmax(0, 1fr); }
	.ab-dec + .ab-dec { border-left: 0; border-top: 1px solid var(--ab-line); }
	.ab-snav__in { gap: 32px; }
	.ab-snav__links { gap: 28px; }
	.ab-snav__tel small { display: none; }
	.ab-contact { grid-template-columns: minmax(0, 1fr); }
	.ab-fams { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
/* 宽屏：档案单独一行时条目排四列 */
@media (min-width: 1100px) { .ab-filerow--one .ab-file dl { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* =================== 手机：单独排版 =================== */
@media (max-width: 767px) {
	/* 首屏：图在上通栏，字在下；四格事实两列两行（单出的一格占满一行） */
	.ab-hero { padding: 0 0 24px; }
	.ab-hero__grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
	.vz-about .ab-hero__img { order: -1; margin: 0 calc(-1 * var(--ab-gutter)); aspect-ratio: 4 / 3; }
	.ab-hero__text { gap: 12px; padding-top: 22px; }
	.vz-about .ab-hero__lead { font-size: 15px; }
	.ab-facts { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 24px; }
	.ab-fact:last-child:nth-child(odd) { grid-column: 1 / -1; }
	.ab-fact, .ab-fact + .ab-fact { padding: 16px 12px 8px 0; border-left: 0; border-bottom: 1px solid var(--ab-line); }
	.ab-fact:nth-child(even) { padding-left: 14px; border-left: 1px solid var(--ab-line); }
	.ab-fact__n b { font-size: 30px; }
	.ab-fact__n span { font-size: 14px; }
	.vz-about .ab-fact > p:not(.ab-fact__n) { font-size: 12px; }
	.vz-about .ab-fact .ab-more-link { font-size: 12px; }
	.ab-fact__links { gap: 0 12px; }
	.ab-fact > .ab-live { padding: 6px 0 12px; }

	/* 吸顶分段导航：四段横排，当前段红线；客服热线不出（联系我们一段有）。
	   放得下时均分一行；放不下（英文全称标签、更窄的屏）时整条横滑，当前段自动滚进可视区，不撑宽页面 */
	.ab-snav { border-top: 0; }
	.ab-snav__in { gap: 0; }
	.ab-snav__name, .ab-snav__tel { display: none !important; }
	.ab-snav__links { position: relative; flex: 1; min-width: 0; justify-content: space-between; gap: 12px; overflow-x: auto; overflow-y: hidden; scrollbar-width: none; }
	.ab-snav__links::-webkit-scrollbar { display: none; }
	.vz-about .ab-snav__links a { flex: none; font-size: 14px; }
	.ab-snav__links a.is-on::after { bottom: 0; }
	.ab-snav--en .ab-snav__full { display: none; }
	.ab-snav--en .ab-snav__short { display: inline; }

	.ab-head { gap: 12px; margin-bottom: 24px; }
	.vz-about .ab-head__lead { display: none; } /* 同全站段标题：手机不出导语 */

	/* 品牌故事：首段 + 展开全文；档案两列；研发标准三格；品牌文章变文字行 */
	.ab-story { grid-template-columns: minmax(0, 1fr); gap: 14px; }
	.ab-story__head { gap: 12px; }
	.vz-about .ab-story__lead { font-size: 16px; line-height: 1.75; }
	.ab-story__body { gap: 12px; }
	.ab-story__more { display: block; }
	.ab-story__more > summary { display: flex; align-items: center; justify-content: space-between; min-height: 44px; border-top: 1px solid var(--ab-line); border-bottom: 1px solid var(--ab-line); font-size: 14px; font-weight: 500; list-style: none; cursor: pointer; }
	.ab-story__more > summary::-webkit-details-marker { display: none; }
	.ab-story__more > summary::after { content: "+"; font-size: 18px; color: var(--ab-red); }
	.ab-story__more[open] > summary::after { content: "−"; }
	.ab-story__more[open] > summary { margin-bottom: 12px; }
	.ab-story__more > p + p { margin-top: 12px; }
	.vz-about .ab-story__vow { margin-top: 16px; padding-left: 14px; font-size: 16px; }
	.vz-about .ab-story__to { margin-top: 12px; font-size: 13px; }

	.ab-filerow { grid-template-columns: minmax(0, 1fr); gap: 14px; margin-top: 40px; }
	.ab-file, .ab-std { padding: 20px 18px; }
	.ab-file dl { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 14px; }
	.ab-file dl > div { grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 10px 0; }
	.ab-file dt { font-size: 12px; }
	.ab-file dd { font-size: 14px; line-height: 1.5; }
	.ab-std { gap: 14px; }
	.ab-std__words li { padding: 14px 0; font-size: 22px; }

	.ab-posts__head { margin: 44px 0 6px; }
	/* 品牌文章：同资讯页手机列表，文字卡变成纯文字行；品牌资料两篇接在下面，也是文字行 */
	.ab-posts { grid-auto-flow: row; grid-template-columns: minmax(0, 1fr); gap: 0; }
	.vz-about .jn-card--text { display: block; min-height: 0; padding: 16px 0; background: none; border-bottom: 1px solid var(--ab-line); }
	.vz-about .jn-card__meta { margin-bottom: 6px; }
	.vz-about .jn-card--text .jn-card__title { font-size: 16px; font-weight: 600; -webkit-line-clamp: 3; }
	.vz-about .jn-card--text .j-sum, .vz-about .jn-card--text .j-more { display: none; }
	.ab-more { margin-top: 20px; padding-left: 0; border-left: 0; }
	.vz-about .ab-more__h { margin-bottom: 0; font-size: 12px; }
	.ab-more a { padding: 12px 0; }
	.ab-more a span { font-size: 14px; }

	/* 工坊与工艺：视频通栏；文字与寄语；实拍横滑；规模三格；工艺卡横滑 */
	.ab-craft-sec .ab-head { margin-bottom: 24px; }
	.ab-craft { grid-template-columns: minmax(0, 1fr); gap: 24px; }
	.vz-about .ab-video__cover { margin: 0 calc(-1 * var(--ab-gutter)); }
	.ab-play { width: 56px; height: 56px; }
	.ab-video__badge { left: var(--ab-gutter); top: 12px; }
	.ab-video__meta { margin-top: 12px; }
	.vz-about .ab-video__t { font-size: 16px; }
	.ab-craft__text { gap: 14px; }
	.ab-quote { padding-left: 14px; }
	.vz-about .ab-quote blockquote p { font-size: 17px; }
	.vz-about .ab-quote__body { font-size: 13px; }
	.ab-gallery { display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 var(--ab-gutter); margin: 36px calc(-1 * var(--ab-gutter)) 0; padding: 24px var(--ab-gutter) 6px; scrollbar-width: none; }
	.ab-gallery::-webkit-scrollbar { display: none; }
	.ab-gallery > li { flex: 0 0 70%; scroll-snap-align: start; }
	.ab-gallery figcaption { font-size: 12px; }
	.ab-scale { grid-auto-flow: row; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 20px; }
	.ab-scale > div { padding: 14px 10px; }
	.ab-scale > div:nth-child(3n + 1) { border-left: 0; }
	.ab-scale dd b { font-size: 22px; }
	.ab-scale dt { font-size: 12px; }
	.ab-techs__head { flex-wrap: wrap; gap: 16px; margin: 44px 0 14px; }
	.ab-techs__head > div { flex: 1 1 12em; min-width: 0; }
	.vz-about .ab-techs__head .vz-t-small { font-size: 13px; }
	.ab-tech-all { display: none !important; }
	.ab-techs { display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 var(--ab-gutter); margin: 0 calc(-1 * var(--ab-gutter)); padding: 0 var(--ab-gutter) 6px; scrollbar-width: none; }
	.ab-techs::-webkit-scrollbar { display: none; }
	.ab-techs > li { flex: 0 0 66%; scroll-snap-align: start; }
	.vz-about .ab-tech { min-height: 0; padding: 20px 18px 16px; }
	.vz-about .ab-tech h4 { font-size: 17px; }
	.vz-about .ab-tech p { font-size: 13px; }
	.ab-tech__more { min-height: 32px; }

	/* 发展历程：年份改横排跳转条（不吸顶）；事件竖排，左侧时间线 */
	.ab-tl { grid-template-columns: minmax(0, 1fr); gap: 16px; }
	.ab-years { position: static; }
	.ab-years > p { display: none; }
	.ab-years ol { display: flex; gap: 8px; overflow-x: auto; margin: 0 calc(-1 * var(--ab-gutter)); padding: 0 var(--ab-gutter) 4px; border: 0; scrollbar-width: none; }
	.ab-years ol::-webkit-scrollbar { display: none; }
	.ab-years li { flex: none; }
	.vz-about .ab-years a { gap: 6px; min-height: 44px; padding: 0 12px; border: 1px solid var(--ab-line); font-size: 14px; }
	.vz-about .ab-years a.is-on { border-color: var(--ab-ink); background: var(--ab-ink); color: var(--ab-paper); }
	.ab-years a.is-on::before { display: none; }
	.ab-years a.is-on small { color: var(--ab-on-dark-2); }
	.ab-yearlist { border-top: 0; }
	.ab-year { position: relative; grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 12px 0 12px 18px; border-bottom: 0; border-left: 1px solid var(--ab-line); scroll-margin-top: 16px; }
	.ab-year::before { content: ""; position: absolute; left: -5px; top: 19px; width: 9px; height: 9px; border-radius: 50%; background: var(--ab-paper); border: 2px solid var(--ab-ink); }
	.vz-about .ab-year__n { font-size: 24px; }
	.ab-ev { grid-template-columns: 48px minmax(0, 1fr); gap: 0 10px; padding: 0 0 6px; }
	.ab-ev + .ab-ev { padding-top: 2px; }
	.ab-ev > .ab-date { grid-row: 1; grid-column: 1; font-size: 12px; line-height: 1.9; }
	.vz-about .ab-ev > .j-type { grid-column: 1; grid-row: 2; align-self: start; gap: 5px; font-size: 11px; }
	.vz-about .ab-ev > .j-type:lang(en) { grid-column: 2; grid-row: 3; margin-top: 2px; } /* 英文类型（New products）放不进 48px 列：挪到副行下面，中文两字仍在左列 */
	.ab-ev > .j-type::before { width: 5px; height: 5px; }
	.ab-ev__t { grid-column: 2; grid-row: 1; font-size: 15px; }
	.ab-ev__sub { grid-column: 2; grid-row: 2; font-size: 12px; }
	.ab-ev--key .ab-ev__t { font-size: 17px; }
	.ab-ev--key .ab-ev__t::before { display: none; }
	.ab-ev--key > .ab-date { color: var(--ab-red); }

	.ab-decades { margin: 40px calc(-1 * var(--ab-gutter)) 0; padding: 28px var(--ab-gutter) 24px; }
	.ab-decades__head { margin-bottom: 16px; }
	.ab-decades__row { display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 var(--ab-gutter); margin: 0 calc(-1 * var(--ab-gutter)); padding: 0 var(--ab-gutter) 6px; background: transparent; scrollbar-width: none; }
	.ab-decades__row::-webkit-scrollbar { display: none; }
	.ab-dec { flex: 0 0 78%; scroll-snap-align: start; padding: 20px 18px; background: var(--ab-paper); }
	.ab-dec + .ab-dec { border-left: 0; }
	.vz-about .ab-dec h4 { font-size: 21px; }
	.vz-about .ab-dec__q { font-size: 14px; }
	.vz-about .ab-decades__sum { font-size: 13px; }

	.ab-today, .ab-decades + .ab-today { grid-template-columns: minmax(0, 1fr); gap: 20px; margin-top: 48px; padding-top: 32px; }
	.ab-today__text { gap: 12px; }
	.vz-about .ab-today__h { font-size: 22px; }
	.ab-today__text .ab-today__btn { justify-self: stretch; width: 100%; min-height: 48px; }
	.ab-fams { display: flex; gap: 12px; overflow-x: auto; margin: 0 calc(-1 * var(--ab-gutter)); padding: 0 var(--ab-gutter) 4px; scrollbar-width: none; }
	.ab-fams::-webkit-scrollbar { display: none; }
	.ab-fams > li { flex: 0 0 76px; }
	.vz-about .ab-fams a { text-align: center; font-size: 12px; }
	.vz-about .ab-fams__img, .ab-fams__arrow { border-radius: 16px; }

	/* 联系我们：电话、邮箱是两个通栏大按钮；按事由改列表行；公司信息单列 */
	.ab-contact { grid-template-columns: minmax(0, 1fr); gap: 18px; }
	.ab-contact__main { gap: 12px; }
	.ab-lines { grid-template-columns: minmax(0, 1fr); gap: 10px; }
	.ab-line { padding: 14px 16px; border: 1px solid var(--ab-line); }
	.ab-line b { font-size: 19px; }
	.vz-about .ab-routes__head { margin: 36px 0 8px; }
	.ab-routes { grid-auto-flow: row; grid-template-columns: minmax(0, 1fr); gap: 0; border-top: 1px solid var(--ab-line); }
	.ab-route { grid-template-columns: 32px minmax(0, 1fr); gap: 2px 12px; padding: 16px 0 8px; background: transparent; border-bottom: 1px solid var(--ab-line); }
	.vz-about .ab-route h4 { font-size: 16px; }
	.vz-about .ab-route p { font-size: 13px; }
	.vz-about .ab-route p.ab-route__acts { margin-top: 2px; gap: 0 18px; }
	.vz-about .ab-route .ab-more-link { font-size: 13px; }
	.vz-about .ab-co__head { margin: 32px 0 6px; }
	.ab-co { grid-auto-flow: row; grid-template-columns: minmax(0, 1fr); }
	.ab-co > div { grid-template-columns: 76px minmax(0, 1fr); gap: 12px; padding: 10px 0; }
	.ab-co dd { font-size: 14px; }
}