/* v13.1 — about and contact */
.resource-hero--about .eyebrow,
.resource-hero--contact .eyebrow { color: var(--brand-bright); }

.about-intro__heading { position: relative; }
.about-intro__heading::after {
    content: "";
    display: block;
    width: 72px;
    height: 4px;
    margin-top: 32px;
    background: var(--accent);
}
.about-capability { position: relative; overflow: hidden; transition: color .35s, background .35s, transform .35s var(--ease); }
.about-capability::after {
    content: "";
    position: absolute;
    right: -54px;
    bottom: -54px;
    width: 120px;
    height: 120px;
    border: 1px solid rgba(0,0,0, .28);
    border-radius: 50%;
    transition: transform .4s var(--ease);
}
.about-capability:hover { z-index: 1; transform: translateY(-6px); background: var(--surface); }
.about-capability:hover::after { transform: scale(1.3); }

.about-workflow__image { position: relative; overflow: hidden; }
.about-workflow__image::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255, 255, 255, .2); pointer-events: none; }
.about-workflow__image img { transition: transform .8s var(--ease); }
.about-workflow__image:hover img { transform: scale(1.025); }
.about-honor { border-top: 3px solid transparent; transition: transform .3s var(--ease), border-color .3s, box-shadow .3s; }
.about-honor:hover { transform: translateY(-5px); border-color: var(--accent); box-shadow: 0 24px 54px rgba(0,0,0, .13); }

/* v13.8 甲方确认发展历程：桌面交错时间轴，移动端单列阅读 */
.about-history { position: relative; overflow: hidden; padding: 112px 0; background: #fff; }
.about-history::before { content: ""; position: absolute; top: 0; right: -12vw; width: 38vw; height: 38vw; border-radius: 50%; background: radial-gradient(circle, rgba(255,103,0, .11), rgba(255,103,0, 0) 68%); pointer-events: none; }
.about-history__heading { position: relative; display: grid; grid-template-columns: minmax(0, .8fr) minmax(320px, 1fr); gap: 72px; align-items: end; margin-bottom: 70px; }
.about-history__heading h2 { margin: 14px 0 0; color: var(--ink); font-size: clamp(38px, 5vw, 64px); line-height: 1.08; }
.about-history__heading p { max-width: 700px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.about-history__timeline { position: relative; margin: 0; padding: 0; list-style: none; }
.about-history__timeline::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: linear-gradient(180deg, rgba(255,103,0, .35), var(--ink), rgba(255,103,0, .35)); transform: translateX(-.5px); }
.about-history__item { position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 96px; align-items: center; min-height: 390px; padding: 42px 0; }
.about-history__item::before { content: ""; position: absolute; z-index: 2; top: 50%; left: 50%; width: 15px; height: 15px; border: 5px solid #fff; border-radius: 50%; background: var(--brand-bright); box-shadow: 0 0 0 1px rgba(0,0,0, .24), 0 0 0 9px rgba(255,103,0, .11); transform: translate(-50%, -50%); }
.about-history__visual { position: relative; overflow: hidden; min-height: 330px; border-radius: 22px; background: var(--ink); box-shadow: 0 26px 70px rgba(0,0,0, .18); }
.about-history__visual img { display: block; width: 100%; height: 100%; min-height: 330px; aspect-ratio: 3 / 2; object-fit: cover; transition: transform .7s var(--ease); }
.about-history__item:hover .about-history__visual img { transform: scale(1.025); }
.about-history__visual > span { position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255, 255, 255, .94); font-size: clamp(60px, 8vw, 116px); font-weight: 800; letter-spacing: -.06em; }
.about-history__visual > span::after { content: "NEXT"; position: absolute; bottom: 46px; color: var(--brand-bright); font-size: 12px; letter-spacing: .3em; }
.about-history__content { max-width: 550px; padding: 24px 0; }
.about-history__period { display: inline-flex; align-items: center; gap: 12px; color: var(--accent-text); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.about-history__period::before { content: ""; width: 34px; height: 2px; background: var(--brand-bright); }
.about-history__content h3 { margin: 18px 0 8px; color: var(--ink); font-size: clamp(32px, 4vw, 50px); line-height: 1.12; }
.about-history__content strong { display: block; margin-bottom: 22px; color: var(--ink); font-size: 18px; }
.about-history__content p { margin: 0 0 14px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.about-history__item:nth-child(even) .about-history__visual { order: 2; }
.about-history__item:nth-child(even) .about-history__content { order: 1; justify-self: end; }
.about-history__vision { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); overflow: hidden; margin-top: 72px; border-radius: 24px; background: var(--ink); box-shadow: 0 28px 72px rgba(0,0,0, .2); }
.about-history__vision-copy { display: flex; flex-direction: column; justify-content: center; padding: 56px; }
.about-history__vision .eyebrow { color: var(--brand-bright); }
.about-history__vision h3 { margin: 18px 0; color: #fff; font-size: clamp(34px, 4.3vw, 58px); line-height: 1.2; }
.about-history__vision p { margin: 0; color: rgba(255, 255, 255, .74); font-size: 16px; line-height: 1.9; }
.about-history__vision figure { min-height: 390px; margin: 0; }
.about-history__vision img { display: block; width: 100%; height: 100%; object-fit: cover; }

.contact-page__grid { border-top: 4px solid var(--accent); }
.contact-directory > a { transition: padding .25s var(--ease), color .25s; }
.contact-directory > a:hover { padding-left: 8px; color: var(--accent-text); }
.contact-form-panel input:focus,
.contact-form-panel textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,0,0, .12); outline: 0; }
.contact-form-panel .button:focus-visible { outline: 3px solid rgba(0,0,0, .35); outline-offset: 3px; }

@media (max-width: 640px) {
    .about-intro__heading::after { margin-top: 22px; }
    .about-capability:hover { transform: none; }
    .about-honor:hover { transform: none; }
}

/* v13.7.1 到访导航（/about）：纯地址与外部地图跳转，不嵌入第三方地图 */
.about-navigation { padding: 76px 0; background: linear-gradient(180deg, #fff, var(--surface)); }
.about-navigation__card { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 48px; align-items: center; padding: 42px 46px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 24px 60px rgba(0,0,0, .1); }
.about-navigation__info h2 { margin: 12px 0 16px; color: var(--ink); font-size: clamp(30px, 3.5vw, 44px); line-height: 1.2; }
.about-navigation__company { margin: 0 0 6px; font-size: 16px; font-weight: 700; color: var(--text); }
.about-navigation__address { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.about-navigation__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 12px; max-width: 620px; }
.about-navigation__actions .button { white-space: nowrap; }
.about-navigation__copy { border: 1px solid var(--line); background: #fff; color: var(--ink); }
.about-navigation__copy:hover { border-color: var(--accent); color: var(--accent-text); }
.about-navigation__copy-status { min-width: 72px; color: var(--accent-text); font-size: 13px; }

.about-partners { padding: 76px 0; background: #fff; }
.about-partners__inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: end; }
.about-partners__heading h2 { margin: 14px 0 16px; color: var(--ink); font-size: clamp(32px, 4vw, 48px); line-height: 1.2; }
.about-partners__heading p { margin: 0; color: var(--muted); line-height: 1.8; }
.about-partners__links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.about-partner { min-height: 210px; display: flex; flex-direction: column; justify-content: space-between; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); transition: transform .3s var(--ease), border-color .3s, box-shadow .3s; }
.about-partner:hover, .about-partner:focus-visible { transform: translateY(-5px); border-color: var(--accent); box-shadow: var(--shadow); outline: 0; }
.about-partner > span { color: var(--accent-text); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.about-partner strong { color: var(--ink); font-size: 23px; line-height: 1.45; }
.about-partner small { color: var(--muted); font-size: 13px; }
.about-partner i { margin-left: 8px; color: var(--accent-text); font-style: normal; }

@media (max-width: 900px) {
    .about-history { padding: 80px 0; }
    .about-history__heading { grid-template-columns: 1fr; gap: 24px; margin-bottom: 44px; }
    .about-history__timeline::before { left: 13px; }
    .about-history__item { grid-template-columns: 1fr; gap: 24px; min-height: 0; padding: 32px 0 32px 50px; }
    .about-history__item::before { top: 54px; left: 13px; }
    .about-history__visual, .about-history__item:nth-child(even) .about-history__visual { order: 2; min-height: 0; }
    .about-history__content, .about-history__item:nth-child(even) .about-history__content { order: 1; justify-self: stretch; max-width: none; padding-top: 0; }
    .about-history__visual img { min-height: 0; }
    .about-history__item--text-only .about-history__visual { min-height: 220px; }
    .about-history__vision { grid-template-columns: 1fr; }
    .about-history__vision figure { min-height: 320px; }
    .about-navigation { padding: 56px 0; }
    .about-navigation__card { grid-template-columns: 1fr; gap: 28px; padding: 34px; }
    .about-navigation__actions { justify-content: flex-start; }
    .about-partners__inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
    .about-history { padding: 64px 0; }
    .about-history__heading { margin-bottom: 30px; }
    .about-history__heading p { font-size: 15px; }
    .about-history__item { padding-left: 36px; }
    .about-history__timeline::before, .about-history__item::before { left: 9px; }
    .about-history__visual { border-radius: 14px; }
    .about-history__content h3 { font-size: 34px; }
    .about-history__content strong { font-size: 16px; }
    .about-history__content p { font-size: 15px; }
    .about-history__vision { margin-top: 44px; border-radius: 16px; }
    .about-history__vision-copy { padding: 34px 24px; }
    .about-history__vision figure { min-height: 230px; }
    .about-navigation__card { padding: 26px 20px; }
    .about-navigation__actions { display: grid; grid-template-columns: 1fr; }
    .about-navigation__actions .button { width: 100%; justify-content: center; }
    .about-navigation__copy-status { min-height: 20px; }
    .about-partners { padding: 56px 0; }
    .about-partners__links { grid-template-columns: 1fr; }
    .about-partner { min-height: 170px; }
}

/* v13.11: component colors and keyboard states. */
.resource-hero--about::after { background: linear-gradient(90deg, rgba(17,17,17,.72), rgba(17,17,17,.46) 52%, rgba(17,17,17,.14)); }
.resource-hero--about .resource-hero__inner { text-shadow: 0 2px 5px rgba(0,0,0,.65); }
.about-intro__heading h2, .about-capability h3,
.about-history__heading h2, .about-history__content h3,
.about-workflow__copy h2 { color: var(--accent-text); }
.about-capability a, .about-capability i, .about-workflow__copy strong { color: var(--accent-text); }
.about-history__content strong { color: var(--muted); }
.about-history__item--text-only .about-history__visual,
.about-history__vision-copy, .contact-directory { background: var(--accent); color: #fff; }
.about-history__visual > span, .about-history__visual > span::after,
.about-history__vision-copy .eyebrow, .about-history__vision-copy p,
.contact-directory .eyebrow, .contact-directory small, .contact-directory > p,
.contact-directory > a > span, .contact-directory > a:hover { color: #fff; }
.contact-form-panel .button--accent { background: var(--accent-text); color: #fff; }
.contact-form-panel .button--accent:hover { background: var(--accent-deep); color: #fff; }