/* 关于我们 · 真实制造影像与证据型编辑排版 */

* { box-sizing: border-box; }

html,
body { overflow-x: clip; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; }
button,
a { -webkit-tap-highlight-color: transparent; }

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

.skip-link {
  position: fixed;
  left: var(--space-sm);
  top: -5rem;
  z-index: 999;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-ink);
  background: var(--color-accent-bright);
  font-weight: 800;
}

.skip-link:focus { top: var(--space-sm); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: var(--color-ink);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--color-rule);
}

.header-inner {
  width: min(90rem, 100%);
  height: 5.25rem;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  display: grid;
  grid-template-columns: 18.125rem 1fr auto;
  align-items: center;
  gap: var(--space-lg);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.brand-logo {
  width: 11.5rem;
  height: auto;
  display: block;
}

.brand-mark {
  width: 3.5rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  color: var(--color-accent);
  background: #f1f7ee;
  border: 1px solid currentColor;
  font: 900 var(--text-xs) / 1 var(--font-mono);
  letter-spacing: .12em;
}

.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { font-size: var(--text-md); letter-spacing: .08em; }
.brand-copy small {
  margin-top: var(--space-3xs);
  color: #738079;
  font-size: .625rem;
  letter-spacing: .06em;
}

.site-nav {
  position: absolute;
  left: 50%;
  top: 50%;
  display: flex;
  justify-content: center;
  gap: clamp(var(--space-sm), 2.2vw, 2.375rem);
  transform: translate(-50%, -50%);
}

.site-nav a {
  position: relative;
  color: #52615c;
  font-size: .8125rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -.625rem;
  height: 2px;
  background: var(--color-accent);
  transition: right var(--dur-short) var(--ease-out);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--color-ink); }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { right: 0; }

.header-cta {
  display: grid;
  text-align: right;
  text-decoration: none;
  line-height: 1.2;
}

.header-cta span {
  color: #738079;
  font-size: .625rem;
  letter-spacing: .1em;
}

.header-cta strong {
  margin-top: var(--space-3xs);
  color: var(--color-accent);
  font-size: var(--text-sm);
  letter-spacing: .04em;
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: .625rem;
  border: 0;
  color: var(--color-ink);
  background: transparent;
}

.menu-toggle span {
  height: 2px;
  margin: .3rem 0;
  display: block;
  background: currentColor;
  transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out);
}

.section { padding: clamp(var(--space-2xl), 8vw, var(--space-3xl)) var(--space-lg); }
.section-inner { width: min(77.5rem, 100%); margin: 0 auto; }
.section-label,
.eyebrow {
  margin: 0 0 var(--space-sm);
  color: var(--color-accent);
  font-size: .8125rem;
  font-weight: 800;
  letter-spacing: .16em;
}

h1,
h2,
h3,
p { overflow-wrap: anywhere; }

h2 {
  margin: 0;
  font-size: clamp(2.375rem, 4vw, 3.875rem);
  line-height: 1.16;
  letter-spacing: -.045em;
}

.about-hero {
  position: relative;
  min-height: 37.5rem;
  height: min(45rem, calc(100svh - 8.25rem));
  max-height: 48.75rem;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--color-ink);
  background: #e9efea;
}

.about-hero > img,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.about-hero > img { object-fit: cover; object-position: center 53%; filter: saturate(1.06) contrast(1.05) brightness(1.03); transform: scale(1.02); animation: hero-settle 1.2s var(--ease-out) both; }

@keyframes hero-settle {
  from { opacity: .4; transform: scale(1.07); }
  to { opacity: 1; transform: scale(1.02); }
}
.hero-shade {
  background:
    linear-gradient(90deg, rgba(247, 249, 245, .89) 0%, rgba(247, 249, 245, .50) 21%, rgba(247, 249, 245, .10) 44%, transparent 62%),
    linear-gradient(0deg, rgba(247, 249, 245, .06), transparent 36%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(77.5rem, calc(100% - 4rem));
  margin: 0 auto;
  padding: clamp(5rem, 11vw, 8.5rem) 0;
}

.hero-copy .eyebrow { color: var(--color-accent); }
.hero-copy h1 {
  max-width: 40rem;
  margin: 0;
  font-size: clamp(2.25rem, 3.6vw, 3.25rem);
  line-height: 1.16;
  letter-spacing: -.025em;
}

.hero-copy h1 em { color: var(--color-accent); font-style: normal; }
.hero-lead {
  max-width: 38.75rem;
  margin: 1.375rem 0 0;
  color: var(--color-ink-2);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.85;
}

.hero-scroll {
  position: absolute;
  right: max(var(--space-lg), calc((100% - 77.5rem) / 2));
  bottom: var(--space-xl);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .12em;
  text-decoration: none;
}

.hero-scroll i {
  width: 3.5rem;
  height: 1px;
  position: relative;
  background: currentColor;
}

.hero-scroll i::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: .5rem;
  height: .5rem;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
}

.profile { background: var(--color-paper-2); }
.profile-grid {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: clamp(var(--space-2xl), 10vw, 8rem);
}

.profile-copy > p:first-child {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1.35rem, 2.25vw, 2rem);
  font-weight: 700;
  line-height: 1.55;
}

.profile-copy > p:nth-child(2) { color: var(--color-ink-2); font-size: var(--text-md); }
.identity-list { margin: var(--space-xl) 0 var(--space-md); border-top: 1px solid var(--color-rule); }
.identity-list div {
  padding: var(--space-sm) 0;
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-md);
  border-bottom: 1px solid var(--color-rule);
}
.identity-list dt { color: var(--color-ink-2); font-size: var(--text-sm); }
.identity-list dd { margin: 0; font-weight: 800; }
.source-note { margin: 0; color: var(--color-ink-2); font-size: var(--text-xs); }

.history { border-top: 1px solid var(--color-rule); }
.history-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: var(--space-2xl);
}
.history-intro > p { margin: 0 0 .5rem; color: var(--color-ink-2); font-size: var(--text-md); }
.timeline {
  margin: var(--space-2xl) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(9rem, 1fr));
  list-style: none;
  border-top: 1px solid var(--color-rule);
  overflow-x: auto;
  scrollbar-color: var(--color-accent) transparent;
}
.timeline li {
  position: relative;
  min-height: 14rem;
  padding: var(--space-lg) var(--space-md) var(--space-md) 0;
  border-right: 1px solid var(--color-rule);
}
.timeline li::before {
  content: "";
  position: absolute;
  top: -.35rem;
  left: 0;
  width: .7rem;
  height: .7rem;
  background: var(--color-accent);
  border-radius: 50%;
}
.timeline time { display: block; color: var(--color-accent); font-size: var(--text-xl); font-weight: 900; }
.timeline strong { margin-top: var(--space-md); display: block; font-size: var(--text-sm); }
.timeline span { margin-top: var(--space-xs); display: block; color: var(--color-ink-2); font-size: var(--text-xs); }

.manufacturing {
  padding: 0;
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  color: var(--color-paper-2);
  background: var(--color-ink);
}
.manufacturing-media { min-height: 43rem; }
.manufacturing-media img { width: 100%; height: 100%; display: block; object-fit: cover; }
.manufacturing-copy { padding: clamp(var(--space-2xl), 8vw, 7rem); align-self: center; }
.manufacturing-copy .section-label { color: var(--color-accent-bright); }
.manufacturing-copy > p:not(.section-label, .source-note) { margin: var(--space-lg) 0; color: color-mix(in oklch, var(--color-paper-2) 72%, transparent); font-size: var(--text-md); }
.capacity-list { margin: var(--space-xl) 0 var(--space-lg); border-top: 1px solid color-mix(in oklch, var(--color-paper-2) 16%, transparent); }
.capacity-list div {
  padding: var(--space-sm) 0;
  display: grid;
  grid-template-columns: 8rem 1fr;
  align-items: baseline;
  gap: var(--space-md);
  border-bottom: 1px solid color-mix(in oklch, var(--color-paper-2) 16%, transparent);
}
.capacity-list dt { color: var(--color-accent-bright); font-size: var(--text-2xl); font-weight: 900; line-height: 1; }
.capacity-list dt small { margin-left: .2rem; font-size: var(--text-xs); }
.capacity-list dd { margin: 0; color: color-mix(in oklch, var(--color-paper-2) 78%, transparent); font-size: var(--text-sm); }
.source-note.inverse { color: color-mix(in oklch, var(--color-paper-2) 55%, transparent); }

.evidence { background: var(--color-paper-2); }
.evidence-head { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: var(--space-2xl); }
.evidence-head > p { margin: 0 0 .5rem; color: var(--color-ink-2); font-size: var(--text-md); }
.patent-layout {
  margin-top: var(--space-2xl);
  display: grid;
  grid-template-columns: 1.55fr .75fr;
  gap: var(--space-lg);
}
.patent-feature {
  display: grid;
  grid-template-columns: minmax(15rem, .78fr) 1.22fr;
  color: var(--color-paper-2);
  background: var(--color-accent);
}
.patent-image { min-height: 35rem; overflow: hidden; background: #efece1; }
.patent-image img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center top; transition: transform 700ms var(--ease-out); }
.patent-feature:hover .patent-image img { transform: scale(1.025); }
.patent-copy { padding: clamp(var(--space-lg), 4vw, var(--space-xl)); align-self: end; }
.patent-copy > p,
.patent-record > p:first-child { margin: 0 0 var(--space-md); font-size: var(--text-xs); font-weight: 800; letter-spacing: .12em; }
.patent-copy > p span,
.patent-record > p span { margin-right: var(--space-xs); color: var(--color-accent-bright); }
.patent-copy h3,
.patent-record h3 { margin: 0; font-size: clamp(1.5rem, 2.5vw, 2.5rem); line-height: 1.25; letter-spacing: -.035em; }
.patent-copy dl,
.patent-record dl { margin: var(--space-xl) 0 0; }
.patent-copy dl div,
.patent-record dl div { padding: var(--space-xs) 0; display: grid; grid-template-columns: 7.5rem 1fr; gap: var(--space-sm); border-top: 1px solid currentColor; border-color: color-mix(in oklch, currentColor 20%, transparent); }
.patent-copy dt,
.patent-record dt { font-size: var(--text-xs); opacity: .7; }
.patent-copy dd,
.patent-record dd { margin: 0; font-size: var(--text-sm); font-weight: 700; }
.patent-record { padding: clamp(var(--space-lg), 4vw, var(--space-xl)); align-self: stretch; background: var(--color-paper); border: 1px solid var(--color-rule); }
.patent-record > p span { color: var(--color-accent); }
.record-note { margin: var(--space-xl) 0 0; color: var(--color-ink-2); font-size: var(--text-xs); }

.credential-section {
  margin-top: clamp(var(--space-2xl), 8vw, var(--space-3xl));
  padding-top: var(--space-2xl);
  display: grid;
  grid-template-columns: 1.1fr .72fr .72fr;
  gap: var(--space-lg);
  border-top: 1px solid var(--color-rule);
}
.credential-copy { padding-right: clamp(0rem, 4vw, var(--space-xl)); align-self: center; }
.credential-copy h3 { margin: 0; font-size: clamp(2rem, 3.5vw, 3.75rem); line-height: 1.1; letter-spacing: -.05em; }
.credential-copy > p:last-child { color: var(--color-ink-2); }
.credential-section figure { margin: 0; padding: var(--space-sm); background: var(--color-paper); border: 1px solid var(--color-rule); }
.credential-section figure img { width: 100%; height: auto; display: block; aspect-ratio: 5 / 7; object-fit: cover; object-position: top; }
.credential-section figcaption { padding-top: var(--space-sm); display: grid; }
.credential-section figcaption strong { color: var(--color-accent); font-size: var(--text-sm); }
.credential-section figcaption span { color: var(--color-ink-2); font-size: var(--text-xs); }

.about-cta {
  padding: clamp(var(--space-2xl), 8vw, var(--space-3xl)) var(--space-lg);
  text-align: center;
  color: var(--color-paper-2);
  background: var(--color-accent);
}
.about-cta .section-label { color: var(--color-accent-bright); }
.about-cta h2 { font-size: clamp(2.375rem, 4vw, 3.875rem); line-height: 1.16; }
.about-cta > div > div { margin-top: var(--space-xl); display: flex; justify-content: center; gap: var(--space-sm); }
.button { min-height: 3.5rem; padding: .9rem 1.5rem; display: inline-grid; place-items: center; font-size: var(--text-sm); font-weight: 800; text-decoration: none; transition: color var(--dur-short) var(--ease-out), background var(--dur-short) var(--ease-out); }
.button.primary { color: var(--color-ink); background: var(--color-accent-bright); }
.button.primary:hover { background: var(--color-paper-2); }
.button.secondary { border: 1px solid color-mix(in oklch, var(--color-paper-2) 55%, transparent); }
.button.secondary:hover { color: var(--color-ink); background: var(--color-paper-2); }

.site-footer { padding: var(--space-2xl) var(--space-lg) var(--space-lg); color: var(--color-paper-2); background: var(--color-ink); }
.footer-main {
  width: min(77.5rem, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr .9fr 1fr;
  align-items: start;
  gap: var(--space-xl);
}
.footer-brand .brand-copy strong { font-size: var(--text-sm); }
.footer-main address { color: color-mix(in oklch, var(--color-paper-2) 68%, transparent); font-size: var(--text-sm); font-style: normal; }
.footer-main nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-sm) var(--space-md); }
.footer-main nav a { color: color-mix(in oklch, var(--color-paper-2) 72%, transparent); font-size: var(--text-xs); text-decoration: none; }
.footer-main nav a:hover { color: var(--color-accent-bright); }
.footer-bottom {
  width: min(77.5rem, 100%);
  margin: var(--space-xl) auto 0;
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  color: color-mix(in oklch, var(--color-paper-2) 42%, transparent);
  border-top: 1px solid color-mix(in oklch, var(--color-paper-2) 12%, transparent);
  font-size: var(--text-xs);
}
.footer-bottom { flex-wrap: wrap; row-gap: 10px; }
.footer-bottom .icp-link { width: 100%; color: inherit; text-align: center; text-decoration: none; }
.footer-bottom .icp-link:hover { color: var(--color-accent-bright); }
.mobile-call { display: none; }

.js .reveal { opacity: 0; transform: translateY(1.25rem); transition: opacity 650ms var(--ease-out), transform 650ms var(--ease-out); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1000px) {
  .header-inner { grid-template-columns: 1fr auto; }
  .site-nav { grid-column: 1 / -1; }
  .header-cta { display: none; }
  .profile-grid,
  .history-intro,
  .evidence-head { grid-template-columns: 1fr; }
  .manufacturing { grid-template-columns: 1fr; }
  .manufacturing-media { min-height: 28rem; }
  .manufacturing-copy { padding: var(--space-2xl) var(--space-lg); }
  .patent-layout { grid-template-columns: 1fr; }
  .credential-section { grid-template-columns: 1fr 1fr; }
  .credential-copy { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  body { padding-bottom: 4.25rem; }
  .header-inner { height: 4.5rem; padding: 0 var(--space-sm); }
  .brand-mark { width: 3rem; }
  .brand-logo { width: 9.25rem; }
  .brand-copy strong { font-size: var(--text-sm); }
  .brand-copy small { display: none; }
  .menu-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 4.5rem;
    left: 0;
    right: 0;
    padding: var(--space-sm) var(--space-lg) var(--space-lg);
    display: grid;
    gap: 0;
    color: var(--color-paper-2);
    background: var(--color-ink);
    border-top: 1px solid color-mix(in oklch, var(--color-paper-2) 12%, transparent);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-medium) var(--ease-out), opacity var(--dur-short) var(--ease-out);
  }
  .site-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .site-nav a { padding: var(--space-sm) 0; color: color-mix(in oklch, var(--color-paper-2) 78%, transparent); border-bottom: 1px solid color-mix(in oklch, var(--color-paper-2) 12%, transparent); }
  .site-nav a:hover,
  .site-nav a[aria-current="page"] { color: var(--color-paper-2); }
  .site-nav a::after { display: none; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(.5rem) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-.5rem) rotate(-45deg); }
  .section { padding: var(--space-2xl) var(--space-sm); }
  .about-hero { min-height: 38.75rem; height: auto; max-height: none; }
  .hero-shade { background: linear-gradient(0deg, rgba(247, 249, 245, .92) 0%, rgba(247, 249, 245, .72) 42%, rgba(247, 249, 245, .20) 100%); }
  .hero-copy { width: calc(100% - 2rem); padding: 6rem 0 8rem; }
  .hero-copy h1 { font-size: clamp(2rem, 8.5vw, 2.875rem); }
  .hero-scroll { right: var(--space-sm); bottom: var(--space-lg); }
  .history-intro { gap: var(--space-lg); }
  .timeline { width: calc(100% + 1rem); }
  .patent-feature { grid-template-columns: 1fr; }
  .patent-image { min-height: 27rem; max-height: 36rem; }
  .patent-copy { align-self: auto; }
  .credential-section { grid-template-columns: 1fr; }
  .credential-copy { grid-column: auto; }
  .about-cta { padding: var(--space-2xl) var(--space-sm); }
  .about-cta > div > div { flex-direction: column; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-main nav { justify-content: flex-start; }
  .footer-bottom { flex-direction: column; }
  .mobile-call {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    min-height: 4.25rem;
    padding: .75rem var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-ink);
    background: var(--color-accent-bright);
    text-decoration: none;
  }
  .mobile-call span { font-size: var(--text-sm); font-weight: 800; }
  .mobile-call strong { font-size: var(--text-md); }
}

@media (max-width: 480px) {
  .about-hero { min-height: 36.25rem; }
  .hero-copy h1 { font-size: clamp(1.75rem, 10vw, 2.375rem); }
  .hero-lead br { display: none; }
  .identity-list div,
  .capacity-list div,
  .patent-copy dl div,
  .patent-record dl div { grid-template-columns: 1fr; gap: .2rem; }
  .manufacturing-media { min-height: 20rem; }
  .patent-image { min-height: 25rem; }
  .credential-section figure { padding: var(--space-xs); }
}

@media (max-width: 820px) {
  .about-hero { min-height: 741px; }
}

@media (max-width: 650px) and (min-width: 521px) {
  .about-hero { min-height: 771px; }
}

@media (max-width: 520px) {
  .about-hero { min-height: 725px; }
}

@media (max-width: 400px) {
  .about-hero { min-height: 747px; }
}

@media (max-width: 340px) {
  .about-hero { min-height: 762px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js .reveal { opacity: 1; transform: none; }
}