/* @site-style
style: 工业纪实·车间现场
styleId: industrial-documentary
type: layout
primary: #eb751d
accents: #1f99f3, #2b231d
confirmed: 2026-11-10
*/

@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/roboto-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --brand: #eb751d;
  --brand-strong: #b95308;
  --brand-soft: #f7efe8;
  --accent: #1f99f3;
  --surface: #f9f7f6;
  --bg: #ffffff;
  --ink: #2b231d;
  --muted: #7e6e63;
  --line: #e5e0dc;

  --font-sans: "Roboto", "Helvetica Neue", "Segoe UI", Arial, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Hiragino Sans", sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, "Roboto Mono", Menlo, Consolas, monospace;
  --wrap: 1920px;
  --radius: 2px;
  --shadow: 0 18px 40px rgba(43, 35, 29, .10);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  margin: 0 0 .5em;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.02em;
}

h1 { font-size: clamp(2.15rem, 4.4vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 2.7vw, 2.35rem); }
h3 { font-size: clamp(1.1rem, 1.5vw, 1.3rem); letter-spacing: -.01em; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--brand-strong); }

ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--brand); color: #fff; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 clamp(20px, 3vw, 72px);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(28px, 3.4vw, 72px);
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}
.brand-logo { width: 108px; height: auto; }
.brand-note {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.5;
  border-left: 1px solid var(--line);
  padding-left: 14px;
  max-width: 190px;
}

.site-nav {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  justify-content: center;
  gap: clamp(18px, 1.4vw, 32px);
}
.nav-list {
  display: flex;
  align-items: center;
  flex: 0 1 auto;
  justify-content: center;
  gap: clamp(20px, 1.7vw, 38px);
}
.nav-list a {
  position: relative;
  display: block;
  padding: 6px 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink);
  transition: color .18s ease;
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.nav-list a:hover::after,
.nav-list a:focus-visible::after,
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--brand-strong); }

.lang-switch-group {
  display: flex;
  align-items: center;
  gap: 6px;
  border-left: 1px solid var(--line);
  padding-left: 20px;
}
.lang-switch a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 6px;
  border-radius: var(--radius);
  transition: background .18s ease, color .18s ease;
}
.lang-switch a:hover { background: var(--brand-soft); color: var(--brand-strong); }
.lang-switch a[aria-current="true"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--brand); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: none;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 9px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease;
}
.nav-toggle:hover { border-color: var(--brand); color: var(--brand-strong); }
.nav-toggle-bars { display: block; width: 16px; height: 10px; position: relative; }
.nav-toggle-bars span {
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 4.25px; }
.nav-toggle-bars span:nth-child(3) { top: 8.5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(4.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) { transform: translateY(-4.25px) rotate(-45deg); }

/* ---------- section rhythm ---------- */
.section { padding: 92px 0; }
.section--tight { padding: 64px 0; }
.section--surface { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section--ink { background: var(--ink); color: #f6f1ed; }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 48px;
}
.section-head p { color: var(--muted); margin: 0; }
.section--ink .section-head p { color: rgba(246, 241, 237, .72); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--brand-strong);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--brand);
}

.lead { font-size: 1.06rem; color: var(--muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid var(--brand);
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .01em;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, transform .18s ease, color .18s ease;
}
.btn:hover { background: var(--brand-strong); border-color: var(--brand-strong); color: #fff; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--ink); background: transparent; color: var(--ink); }
.btn--ghost-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .4);
  color: #fff;
}
.btn--ghost-light:hover { background: rgba(255, 255, 255, .1); border-color: #fff; color: #fff; }
.btn-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.arrow-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--brand-strong);
  border-bottom: 1px solid transparent;
  transition: border-color .18s ease, gap .18s ease;
}
.arrow-link::after { content: "→"; font-family: var(--font-mono); }
.arrow-link:hover { border-color: var(--brand-strong); gap: 12px; }

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat {
  padding: 26px 24px 24px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.03em;
}
.stat-num em { font-style: normal; color: var(--brand); }
.stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- generic cards ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }

.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.card:hover { border-color: #d7cfc8; box-shadow: var(--shadow); transform: translateY(-2px); }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--brand-strong);
  margin-bottom: 18px;
}

/* ---------- spec table ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.spec-table caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 14px;
}
.spec-table th,
.spec-table td {
  text-align: left;
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
.spec-table tbody tr { transition: background .18s ease; }
.spec-table tbody tr:hover { background: var(--brand-soft); }
.spec-table td:first-child { font-weight: 600; }
.spec-table .num { font-family: var(--font-mono); color: var(--brand-strong); white-space: nowrap; }
.spec-table tfoot td {
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--ink);
  border-bottom: 0;
  padding-top: 12px;
}
.spec-table tfoot td:first-child { font-weight: 600; color: var(--ink); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------- process timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin-top: 8px;
}
.timeline li {
  position: relative;
  padding: 34px 18px 0 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}
.timeline li::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--brand);
  transition: background .2s ease;
}
.timeline li:hover::before { background: var(--brand); }
.timeline .step-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--brand-strong);
  margin-bottom: 8px;
}
.timeline .step-title {
  display: block;
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 6px;
}
.section--ink .timeline li { border-top-color: rgba(255, 255, 255, .18); color: rgba(246, 241, 237, .68); }
.section--ink .timeline li::before { background: var(--ink); }
.section--ink .timeline .step-title { color: #fff; }
.section--ink .timeline .step-no { color: var(--brand); }

/* ---------- cert wall ---------- */
.cert-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.cert {
  background: var(--bg);
  padding: 30px 24px;
  transition: background .2s ease;
}
.cert:hover { background: var(--brand-soft); }
.cert-wall--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cert-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--brand-strong);
}
.cert h2 { font-size: 1.05rem; margin: 14px 0 8px; color: var(--ink); letter-spacing: -.01em; }
.cert p { font-size: 13.5px; color: var(--muted); }
.cert-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--brand-strong);
  border-bottom: 1px solid rgba(185, 83, 8, .4);
  transition: color .18s ease, border-color .18s ease;
}
.cert-link:hover { color: var(--brand); border-color: var(--brand); }
.cert-link:focus-visible { outline: 2px solid var(--brand-strong); outline-offset: 3px; }

/* ---------- capture strip ---------- */
.capture {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 44px 48px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
}
.capture h2 { color: #fff; margin-bottom: 10px; font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.capture p { color: rgba(246, 241, 237, .72); font-size: 14.5px; margin: 0; }

/* ---------- news list (shared) ---------- */
.list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink);
}
.list-item {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) 150px 26px;
  gap: 26px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background .18s ease, padding-left .2s ease;
}
.list-item:hover { background: var(--surface); padding-left: 14px; }
.list-date {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}
.list-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -.01em;
}
.list-item p { grid-column: 2; margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.list-cat {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-strong);
  text-align: right;
}
.list-arrow { font-family: var(--font-mono); color: var(--muted); text-align: right; }
.list-item:hover .list-arrow { color: var(--brand-strong); }

.pagination {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 36px;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.pagination a,
.pagination span {
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
}
.pagination a:hover { border-color: var(--brand); color: var(--brand-strong); }
.pagination .is-current { background: var(--ink); border-color: var(--ink); color: #fff; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
  padding: 26px 0 0;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--brand-strong); }
.breadcrumb li::after { content: "/"; margin-left: 8px; color: var(--line); }
.breadcrumb li:last-child::after { content: ""; }

.page-head {
  padding: 26px 0 52px;
  border-bottom: 1px solid var(--line);
}
.page-head h1 { max-width: 20ch; }
.page-head .lead { max-width: 62ch; margin: 18px 0 0; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(246, 241, 237, .78);
  padding: 46px 0 20px;
  font-size: 15px;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, .95fr) minmax(0, 1.63fr);
  gap: 30px 40px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.footer-col h3 {
  font-family: var(--font-sans);
  font-size: 16px;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: rgba(246, 241, 237, .78); transition: color .18s ease; }
.footer-col a:hover { color: var(--brand); }
.footer-col ul.footer-contact { gap: 11px; }
.footer-contact .fc-item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  line-height: 1.5;
}
.fc-ico { display: inline-flex; margin-top: 3px; color: rgba(246, 241, 237, .45); transition: color .2s ease; }
.fc-ico svg { width: 17px; height: 17px; display: block; }
.fc-text { min-width: 0; overflow-wrap: anywhere; }
.footer-contact .fc-item:hover .fc-ico { color: var(--brand); }
.fc-im {
  display: inline-block;
  margin-left: 6px;
  padding: 0 8px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: rgba(246, 241, 237, .85);
  border: 1px solid rgba(246, 241, 237, .28);
  border-radius: 999px;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.fc-im:hover { color: #fff; border-color: var(--brand); background: rgba(235, 117, 29, .22); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  font-size: 13px;
  color: rgba(246, 241, 237, .58);
}
.footer-bottom p { margin: 0; }
.footer-crawl { display: flex; gap: 16px; }
.footer-bottom a { color: rgba(246, 241, 237, .55); transition: color .18s ease; }
.footer-bottom a:hover { color: var(--brand); }

/* ---------- motion ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
html.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  html.js .reveal { opacity: 1; transform: none; }
}

/* thin scrollbars for scrollable containers */
.table-scroll,
.aa-list {
  scrollbar-width: thin;
  scrollbar-color: rgba(126, 110, 99, .35) transparent;
}
.table-scroll::-webkit-scrollbar,
.aa-list::-webkit-scrollbar { width: 8px; height: 8px; }
.table-scroll::-webkit-scrollbar-thumb,
.aa-list::-webkit-scrollbar-thumb { background: rgba(126, 110, 99, .35); border-radius: 999px; }
.table-scroll::-webkit-scrollbar-track,
.aa-list::-webkit-scrollbar-track { background: transparent; }

/* ---------- responsive ---------- */
@media (max-width: 1360px) {
  .brand-note { display: none; }
  .site-nav, .nav-list { gap: 20px; }
  .nav-list a { font-size: 15.5px; }
}

@media (max-width: 1080px) {
  .brand-note { display: none; }
  .site-nav, .nav-list { gap: 18px; }
  .nav-list a { font-size: 15px; letter-spacing: .03em; }
  .timeline { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .timeline li { padding-bottom: 26px; }
  .cert-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { gap: 24px 30px; }
}

@media (max-width: 900px) {
  .brand-note { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    inset: 74px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    padding: 12px 28px 22px;
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; }
  .site-nav { flex: none; margin-left: 0; }
  .site-nav.is-open { display: flex; }
  .nav-list { flex: none; flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0; }
  .nav-list a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-list a::after { display: none; }
  .nav-list a[aria-current="page"] { color: var(--brand-strong); }
  .lang-switch-group { border-left: 0; padding: 16px 0 0; gap: 10px; }
  .section { padding: 64px 0; }
  .section-head { grid-template-columns: minmax(0, 1fr); gap: 16px; align-items: start; margin-bottom: 34px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { padding: 22px 18px; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .capture { padding: 32px 26px; grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .list-item { grid-template-columns: 92px minmax(0, 1fr); gap: 12px 18px; }
  .list-item p { grid-column: 2; }
  .list-cat, .list-arrow { display: none; }
  .footer-grid { gap: 22px 22px; }
  .footer-col h3 { font-size: 14px; margin-bottom: 12px; }
  .site-footer { padding: 34px 0 16px; font-size: 14px; }
  .page-head h1 { max-width: none; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .timeline { grid-template-columns: minmax(0, 1fr); }
  .timeline li { padding: 22px 0 22px 26px; border-top: 0; border-left: 1px solid var(--line); }
  .timeline li::before { top: 27px; left: -5px; }
  .cert-wall { grid-template-columns: minmax(0, 1fr); }
  .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .list-item { grid-template-columns: minmax(0, 1fr); }
  .list-date { grid-column: 1; }
  .list-item p { grid-column: 1; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
}

/* ---------- utilities ---------- */
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.inline-figure { margin: 26px 0 12px; }
.inline-figure img { width: 100%; border: 1px solid var(--line); }
.inline-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  line-height: 1.6;
}

.eyebrow-heading { font-size: 1.15rem; margin-bottom: 18px; }

/* 404 quick links */
.milestones > li:not(.milestone) {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .18s ease, background .18s ease;
}
.milestones > li:not(.milestone):hover { padding-left: 10px; background: var(--surface); }
.milestones > li:not(.milestone) a { font-size: 15px; }

/* ---------- products dropdown ---------- */
.has-sub { position: static; }
.sub-toggle { display: none; }
.nav-sub {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 110;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 32px;
  padding: 26px max(28px, calc((100vw - 1200px) / 2 + 28px)) 30px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 22px 40px rgba(43, 35, 29, .12);
}
.has-sub:hover .nav-sub,
.has-sub:focus-within .nav-sub,
.has-sub.is-open .nav-sub { display: grid; }
.nav-sub-group > a {
  display: block;
  padding: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}
.nav-sub-group > a::after { display: none; }
.nav-sub-group ul { display: grid; gap: 7px; margin-top: 10px; }
.nav-sub-group li a {
  padding: 0;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  border-bottom: 0;
}
.nav-sub-group li a::after { display: none; }
.nav-sub-group li a:hover { color: var(--brand-strong); }

@media (max-width: 900px) {
  .has-sub { display: flex; flex-wrap: wrap; align-items: center; }
  .has-sub > a { flex: 1 1 auto; border-bottom: 0; }
  .sub-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: none;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
  }
  .has-sub.is-open .sub-toggle { border-color: var(--brand); color: var(--brand-strong); }
  .nav-sub {
    position: static;
    display: none;
    width: 100%;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding: 6px 0 12px 14px;
    border: 0;
    box-shadow: none;
  }
  .has-sub.is-open .nav-sub { display: grid; }
  .nav-sub a { border-bottom: 0; padding: 7px 0; font-size: 14px; }
  .nav-sub-group > a { padding: 4px 0 6px; }
  .nav-sub-group ul { gap: 2px; margin-top: 2px; }
  .nav-sub-group li a { font-size: 13.5px; }
}

/* ---------- products panel v2（左侧系列 + 右侧品种） ---------- */
.has-sub { display: flex; align-items: center; gap: 2px; }
.sub-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}
.sub-caret {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg) translateY(-1px);
  transition: transform .2s ease, border-color .2s ease;
}
.has-sub:hover .sub-caret,
.has-sub.is-open .sub-caret { transform: rotate(225deg) translateY(-1px); border-color: var(--brand-strong); }
.nav-sub { display: none; padding: 0; grid-template-columns: none; }
.nav-sub::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -34px;
  height: 34px;
  background: transparent;
}
.has-sub:hover .nav-sub,
.has-sub:focus-within .nav-sub,
.has-sub.is-open .nav-sub { display: block; }
.nav-sub-inner {
  display: grid;
  grid-template-columns: 258px minmax(0, 1fr);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}
.nav-sub-cats { padding: 14px 0; border-right: 1px solid var(--line); }
.nav-sub-cats > li > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 14px 9px 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  border-radius: var(--radius);
}
.nav-sub-cats > li > a::after { display: none; }
.nav-sub-cats > li > a:hover,
.nav-sub-cats > li > a:focus-visible,
.nav-sub-cats > li > a.is-active { background: var(--brand-soft); color: var(--brand-strong); }
.sub-cat-count {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  color: var(--muted);
}
.nav-sub-panels { padding: 20px 0 22px 30px; }
.nav-sub-panel { display: none; }
.nav-sub-panel.is-active { display: block; }
.nav-sub-all {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-strong);
  margin-bottom: 12px;
}
.nav-sub-all::after { display: none; }
.nav-sub-panel ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 26px; }
.nav-sub-panel li a {
  display: block;
  padding: 7px 0;
  font-size: 13.5px;
  font-weight: 400;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}
.nav-sub-panel li a::after { display: none; }
.nav-sub-panel li a:hover,
.nav-sub-panel li a:focus-visible { color: var(--brand-strong); border-bottom-color: var(--brand); }
.nav-sub-foot {
  display: block;
  padding: 12px max(28px, calc((100vw - 1200px) / 2 + 28px));
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-strong);
}
.nav-sub-foot::after { display: none; }

@media (max-width: 900px) {
  .has-sub { flex-wrap: wrap; }
  .has-sub > a { flex: 1 1 auto; }
  .sub-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }
  .nav-sub {
    position: static;
    display: none;
    padding: 2px 0 10px 12px;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .has-sub.is-open .nav-sub { display: block; }
  .nav-sub-inner { display: block; max-width: none; padding: 0; }
  .nav-sub-cats { border-right: 0; padding: 0; }
  .nav-sub-cats > li > a { padding: 10px 0; border-bottom: 1px solid var(--line); border-radius: 0; font-size: 14.5px; }
  .nav-sub-panels,
  .nav-sub-foot { display: none; }
}