/* About design: 1920px canvas, 1400px content. */
@font-face { font-family: 'About Sans'; src: url('about-sans.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'About Serif'; src: url('about-serif.woff2') format('woff2'); font-weight: 200 900; font-display: swap; }
.about-page { --serif: 'About Serif', 'Noto Serif SC', SimSun, serif; font-family: 'About Sans', 'Microsoft YaHei', sans-serif; background: #fff; }
.about-page .site-header { position: relative; background: #fff; box-shadow: 0 2px 12px rgba(138,74,59,.1); }

.about-intro { padding-top: 80px; }
.about-intro-grid { min-height: 413px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 40px; }
.about-copy h1 { font: 700 44px/63px var(--serif); }
.about-copy > p { margin-top: 22px; font-size: 20px; line-height: 34px; letter-spacing: 4.5px; }
.about-copy > p span { color: var(--red); }
.about-fields { margin: 22px 0 0; padding: 0; list-style: none; font-size: 20px; line-height: 34px; }
.about-fields li::before { content: '•'; display: inline-block; width: 25px; color: var(--red); font-weight: 700; }
.about-fields strong { color: var(--red); font-weight: 500; }
.about-values { margin-top: 17px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); grid-auto-rows: 188px; gap: 16px; }
.value-card { position: relative; overflow: hidden; border-radius: 16px; padding-top: 32px; background: #fff; text-align: center; }
.value-card::before { content: ''; position: absolute; inset: 0; background: url('about-position.png') center/cover; }
.value-card:nth-child(2)::before { background-image: url('about-mission.png'); }
.value-card:nth-child(3)::before { background-image: url('about-vision.png'); }
.value-card:nth-child(4)::before { background-image: url('about-values.png'); }
.value-card h2, .value-card p { position: relative; }
.value-card h2 { color: var(--red); font: 700 32px/46px var(--serif); }
.value-card p { margin-top: 14px; font-size: 20px; line-height: 32px; }
.value-card:not(:first-child) p { letter-spacing: 4px; }
.about-banner { height: 438px; margin-top: 56px; overflow: hidden; border-radius: 16px; }
.about-banner img { width: 100%; height: 100%; object-fit: cover; }
.history { position: relative; width: 100%; height: 743px; padding-top: 100px; overflow: hidden; background: #fff url('about-history.png') center bottom/100% 520px no-repeat; }
.history::before { content: ''; position: absolute; top: 318px; left: 0; right: 0; height: 2px; background: #f3dfe3; box-shadow: 0 3px 10px #00000008; }
.timeline-viewport { position: relative; width: 100%; margin-top: 60px; overflow-x: auto; scrollbar-width: none; }
.timeline-viewport::-webkit-scrollbar { display: none; }
.timeline-viewport:focus-visible { outline-offset: -4px; }
.timeline-track { position: relative; display: flex; gap: 36px; width: max-content; padding: 161px max(32px,calc((100vw - var(--content-width)) / 2)) 24px; }
.timeline-item { position: relative; width: 446px; height: 184px; flex: 0 0 446px; }
.timeline-item time { position: absolute; left: 0; top: -161px; width: 103px; color: var(--red); font: 700 44px/63px var(--serif); text-align: center; }
.timeline-item::before { content: ''; position: absolute; z-index: 2; top: -82px; left: 34px; width: 34px; height: 34px; border-radius: 50%; background: #f8e8eb; }
.timeline-item::after { content: ''; position: absolute; z-index: 3; top: -73px; left: 43px; width: 16px; height: 16px; border-radius: 50%; background: var(--red); }
.timeline-card { position: relative; margin-left: 16px; width: 430px; min-height: 184px; padding: 20px 20px 20px 60px; border-radius: 16px; background: rgba(255,255,255,.94); box-shadow: 0 8px 24px rgba(181,27,50,.07); }
.timeline-card::before { content: ''; position: absolute; left: 34px; top: -48px; width: 2px; height: 72px; background: var(--red); }
.timeline-card::after { content: ''; position: absolute; left: 29px; top: 24px; width: 12px; height: 12px; border: 2px solid #edb8c0; border-radius: 50%; background: #fff; }
.timeline-card h3 { font: 700 28px/40px var(--serif); }
.timeline-card p { margin-top: 20px; font-size: 20px; line-height: 32px; }
.timeline-pagination { appearance: none; -webkit-appearance: none; position: absolute; top: 616px; left: 50%; width: 140px; height: 8px; margin: 0; padding: 0; transform: translateX(-50%); border-radius: 8px; background: #fff; box-shadow: 0 1px 8px #0002; cursor: pointer; }
.timeline-pagination::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 80px; height: 8px; border: 0; border-radius: 8px; background: var(--red); }
.timeline-pagination::-moz-range-thumb { width: 80px; height: 8px; border: 0; border-radius: 8px; background: var(--red); }
.about-faq { padding-top: 100px; padding-bottom: 100px; }
.faq-list { margin-top: 60px; box-shadow: 0 -1px #eee; }
.faq-item { border-bottom: 1px solid #eee; }
.faq-item summary { position: relative; display: flex; align-items: center; gap: 12px; padding: 29px 28px 30px 0; list-style: none; cursor: pointer; font: 700 26px/37px var(--serif); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: ''; flex: 0 0 15px; width: 15px; height: 15px; border-radius: 50%; background: #d8d8d8; }
.faq-item summary::after { content: ''; position: absolute; right: 0; top: calc(50% - 6px); border: 6px solid transparent; border-left: 7px solid #333; border-right: 0; }
.faq-item[open] summary { color: var(--red); }
.faq-item[open] summary::before { background: var(--red); }
.faq-item[open] summary::after { top: calc(50% - 4px); border: 7px solid transparent; border-top: 0; border-bottom: 7px solid #333; }
.faq-answer { margin-top: -6px; padding: 0 27px 30px; color: #666; font-size: 20px; line-height: 36px; }
.faq-answer a, .faq-answer button { color: var(--red); text-decoration: underline; text-underline-offset: 4px; }
.faq-answer button { padding: 0; }
.about-page .footer-main { min-height: 281px; padding-top: 55px; padding-bottom: 37px; display: grid; grid-template-columns: 555px minmax(82px,1fr) 364px; align-items: start; gap: 48px; }
.about-page .footer-brand { padding-top: 7px; }
.about-page .footer-brand .brand, .about-page .footer-brand .brand img { display: block; width: 146px; height: 33px; }
.about-page .footer-brand p { margin-top: 18px; color: rgba(51,51,51,.7); font-size: 16px; line-height: 23px; letter-spacing: 1px; }
.about-page .footer-links { display: flex; flex-direction: column; align-items: center; gap: 11px; width: 82px; font-size: 20px; line-height: 29px; white-space: nowrap; }
.about-page .footer-links a:hover { color: var(--red); }
.about-page .footer-qrcodes { padding-top: 8px; }
@media (max-width: 1450px) {
  .about-intro-grid { gap: 28px; }
  .about-copy > p { letter-spacing: 3px; }
  .about-page .footer-main { grid-template-columns: minmax(280px,1fr) 82px 340px; gap: 48px; }
}
@media (max-width: 1100px) {
  .about-intro { padding-top: 60px; }
  .about-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-copy h1 { font-size: 38px; line-height: 54px; }
  .about-values { margin-top: 0; }
  .about-banner { height: auto; aspect-ratio: 1400/438; margin-top: 40px; }
  .about-page .footer-main { grid-template-columns: 1fr 100px; gap: 28px; }
  .about-page .footer-qrcodes { grid-column: 1 / -1; justify-self: start; }
}
@media (max-width: 700px) {
  .about-intro { padding-top: 48px; }
  .about-intro-grid { gap: 28px; }
  .about-copy h1 { font-size: 29px; line-height: 42px; }
  .about-copy > p, .about-fields { font-size: 15px; line-height: 26px; letter-spacing: 0; }
  .about-fields { margin-top: 18px; }
  .about-fields li::before { width: 18px; }
  .about-values { gap: 12px; grid-auto-rows: 152px; }
  .value-card { border-radius: 12px; padding-top: 24px; }
  .value-card h2 { font-size: 22px; line-height: 32px; }
  .value-card p { margin-top: 10px; font-size: 13px; line-height: 22px; }
  .value-card:not(:first-child) p { letter-spacing: 0; }
  .about-banner { margin-top: 28px; border-radius: 12px; }
  .history { height: 560px; padding-top: 60px; background-size: auto 390px; }
  .history::before { top: 228px; }
  .timeline-viewport { margin-top: 50px; }
  .timeline-track { gap: 20px; padding: 142px 20px 24px; }
  .timeline-item { width: 300px; flex-basis: 300px; }
  .timeline-item time { top: -142px; font-size: 36px; line-height: 52px; }
  .timeline-card { width: 284px; padding: 20px 14px 20px 48px; }
  .timeline-card h3 { font-size: 24px; line-height: 34px; }
  .timeline-card p { margin-top: 16px; font-size: 15px; line-height: 26px; }
  .timeline-pagination { top: 484px; }
  .about-faq { padding-block: 60px; }
  .faq-list { margin-top: 32px; }
  .faq-item summary { gap: 10px; padding-block: 23px; font-size: 18px; line-height: 29px; }
  .faq-item summary::before { flex-basis: 10px; width: 10px; height: 10px; }
  .faq-answer { padding: 0 20px 24px; font-size: 15px; line-height: 28px; }
  .about-page .footer-main { padding-block: 28px; grid-template-columns: 1fr; gap: 24px; }
  .about-page .footer-brand { padding-top: 0; }
  .about-page .footer-brand p { font-size: 13px; letter-spacing: 0; }
  .about-page .footer-links { width: auto; flex-direction: row; flex-wrap: wrap; gap: 10px 18px; font-size: 15px; }
  .about-page .footer-qrcodes { grid-column: auto; justify-self: start; }
}