:root {
    --about-red: #d72b2b;
    --about-ink: #1f2523;
    --about-line: #dfe3e1;
}

.about-page {
    overflow: hidden;
    color: var(--about-ink);
    background: #fff;
}

.about-shell {
    width: min(1360px, calc(100% - 80px));
    margin: 0 auto;
}

.about-hero {
    position: relative;
    height: min(72svh, 720px);
    min-height: 520px;
    overflow: hidden;
    color: #fff;
    background: #111;
}

.about-hero video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-hero-shade {
    position: absolute;
    inset: 0;
    background: rgba(7, 13, 11, .42);
}

.about-hero-copy {
    position: absolute;
    z-index: 2;
    right: 6.5vw;
    bottom: 12%;
    left: 6.5vw;
    max-width: 1040px;
}

.about-hero-copy p,
.about-section-heading p {
    margin: 0 0 18px;
    color: var(--about-red);
    font-family: Arial, sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0;
}

.about-hero-copy p {
    color: #fff;
}

.about-hero-copy h1 {
    max-width: 980px;
    margin: 0;
    font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
    font-size: clamp(42px, 4.8vw, 76px);
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.16;
}

.about-hero-copy span {
    display: block;
    margin-top: 26px;
    font-size: 18px;
    line-height: 1.6;
}

.about-scroll-cue {
    position: absolute;
    z-index: 3;
    right: 6.5vw;
    bottom: 0;
    display: grid;
    width: 74px;
    height: 74px;
    place-items: center;
    background: #fff;
}

.about-scroll-cue i {
    position: relative;
    display: block;
    width: 18px;
    height: 26px;
    border: 1px solid #1f2523;
    border-radius: 12px;
}

.about-scroll-cue i::after {
    position: absolute;
    top: 6px;
    left: 50%;
    width: 2px;
    height: 6px;
    content: "";
    background: var(--about-red);
    transform: translateX(-50%);
    animation: about-scroll 1.6s ease-in-out infinite;
}

.about-intro {
    padding: 124px 0 96px;
}

.about-section-heading {
    display: block;
    margin-bottom: 48px;
}

.about-section-heading h2 {
    max-width: 720px;
    margin: 0;
    font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
    font-size: clamp(34px, 3.5vw, 54px);
    font-weight: 500;
    letter-spacing: 0;
    line-height: 1.24;
}

.about-intro-copy {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(54px, 6vw, 96px);
    padding-top: 38px;
    border-top: 1px solid var(--about-line);
    color: #4e5753;
    font-size: 16px;
    line-height: 1.95;
}

.about-intro-column p {
    margin: 0 0 22px;
}

.about-intro-column p:last-child {
    margin-bottom: 0;
}

.about-intro-copy strong {
    color: var(--about-ink);
    font-weight: 650;
}

.about-facts {
    padding: 18px 0 70px;
    background: linear-gradient(180deg, #fff 0%, #f5fafc 100%);
}

.about-facts-shell {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    width: min(1600px, 90%);
    margin: 0 auto;
}

.about-fact {
    min-width: 0;
    padding: 34px clamp(10px, 1.3vw, 24px) 0;
}

.about-fact strong {
    display: flex;
    min-height: 94px;
    align-items: baseline;
    color: #d6031a;
    font-family: Arial, sans-serif;
    font-size: clamp(52px, 4.35vw, 82px);
    font-weight: 400;
    letter-spacing: 0;
    line-height: 1.08;
    white-space: nowrap;
}

.about-fact strong small {
    margin-left: 9px;
    font-size: .34em;
    font-weight: 600;
}

.about-fact.is-certification strong {
    font-size: clamp(34px, 3.1vw, 58px);
}

.about-fact p {
    max-width: 250px;
    margin: 0;
    color: #151817;
    font-size: 14px;
    line-height: 1.8;
}

.js .about-fact strong,
.js .about-fact p {
    opacity: 0;
}

.js .about-fact strong {
    transform: translateY(50px);
    transition: opacity .52s ease .46s, transform .68s cubic-bezier(.22, .7, .2, 1) .46s;
}

.js .about-fact p {
    transform: translateY(25px);
    transition: opacity .5s ease .64s, transform .58s cubic-bezier(.22, .7, .2, 1) .64s;
}

.js .about-facts.is-visible .about-fact strong,
.js .about-facts.is-visible .about-fact p {
    opacity: 1;
    transform: none;
}

.about-factory-banner {
    width: 100%;
    margin: 0 0 110px;
    overflow: hidden;
    background: #dbe7e9;
}

.about-factory-banner img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1740 / 408;
    object-fit: cover;
}

.about-partners {
    padding: 12px 0 132px;
    background: #fff;
}

.about-partners-shell {
    width: min(1540px, calc(100% - 112px));
    margin: 0 auto;
}

.about-partners-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 70px;
    margin-bottom: 52px;
}

.about-partners-heading > div:first-child {
    max-width: 820px;
}

.about-partners-heading p {
    margin: 0 0 16px;
    color: var(--about-red);
    font-family: Arial, sans-serif;
    font-size: 14px;
    font-weight: 700;
}

.about-partners-heading h2 {
    margin: 0;
    color: var(--about-ink);
    font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
    font-size: 52px;
    font-weight: 500;
    line-height: 1.18;
}

.about-partners-heading span {
    display: block;
    margin-top: 18px;
    color: #69716e;
    font-size: 16px;
    line-height: 1.8;
}

.about-partners-progress {
    position: relative;
    width: min(290px, 22vw);
    height: 2px;
    margin-bottom: 10px;
    overflow: hidden;
    background: #dfe3e1;
}

.about-partners-progress i {
    position: absolute;
    inset: 0;
    background: var(--about-red);
    transform: scaleX(.2);
    transform-origin: left center;
    transition: transform .35s ease;
}

.about-partners-carousel {
    position: relative;
}

.about-partners-track {
    display: grid;
    overflow-x: auto;
    grid-auto-columns: calc((100% - 96px) / 5);
    grid-auto-flow: column;
    gap: 24px;
    padding: 2px;
    outline: none;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.about-partners-track::-webkit-scrollbar {
    display: none;
}

.about-partners-track:focus-visible {
    outline: 2px solid rgba(215, 43, 43, .55);
    outline-offset: 8px;
}

.about-partner-card {
    min-width: 0;
    overflow: hidden;
    border-radius: 6px;
    background: #f5f6f5;
    scroll-snap-align: start;
}

.about-partner-card > a,
.about-partner-card > figure {
    color: inherit;
}

.about-partner-card > a {
    display: block;
}

.about-partner-card figure {
    aspect-ratio: 4 / 3;
    margin: 0;
    overflow: hidden;
    background: #e9ecea;
}

.about-partner-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .55s cubic-bezier(.2, .7, .2, 1);
}

.about-partner-card:hover img,
.about-partner-card:focus-within img {
    transform: scale(1.045);
}

.about-partner-card h3 {
    min-height: 74px;
    margin: 0;
    padding: 21px 18px 20px;
    color: #363d3a;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.65;
    text-align: center;
}

.about-partner-card p {
    margin: -12px 18px 20px;
    color: #727a77;
    font-size: 14px;
    line-height: 1.7;
    text-align: center;
}

.about-partners-control {
    position: absolute;
    z-index: 3;
    top: 50%;
    display: grid;
    width: 50px;
    height: 50px;
    padding: 0;
    border: 1px solid #dfe3e1;
    border-radius: 50%;
    place-items: center;
    background: #fff;
    cursor: pointer;
    transform: translateY(-50%);
    transition: border-color .2s ease, background-color .2s ease, opacity .2s ease;
}

.about-partners-control.is-previous { left: -72px; }
.about-partners-control.is-next { right: -72px; }

.about-partners-control i {
    width: 10px;
    height: 10px;
    border-top: 1.5px solid #4c5551;
    border-right: 1.5px solid #4c5551;
}

.about-partners-control.is-previous i { transform: rotate(-135deg); }
.about-partners-control.is-next i { transform: rotate(45deg); }

.about-partners-control:hover:not(:disabled),
.about-partners-control:focus-visible:not(:disabled) {
    border-color: var(--about-red);
    background: var(--about-red);
}

.about-partners-control:hover:not(:disabled) i,
.about-partners-control:focus-visible:not(:disabled) i {
    border-color: #fff;
}

.about-partners-control:disabled {
    cursor: default;
    opacity: .28;
}

.js .about-partners {
    opacity: 0;
    transform: translateY(34px);
    transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1);
}

.js .about-partners.is-visible {
    opacity: 1;
    transform: none;
}

@media (max-width: 1700px) {
    .about-partners-control.is-previous { left: -24px; }
    .about-partners-control.is-next { right: -24px; }
}

@keyframes about-scroll {
    0%, 100% { opacity: .25; transform: translate(-50%, 0); }
    50% { opacity: 1; transform: translate(-50%, 6px); }
}

@media (max-width: 1100px) {
    .about-shell { width: min(100% - 48px, 960px); }
    .about-intro { padding-top: 100px; }
    .about-intro-copy { gap: 42px; padding-top: 28px; }
    .about-facts { padding-bottom: 58px; }
    .about-facts-shell { grid-template-columns: repeat(3, minmax(0, 1fr)); width: calc(100% - 48px); row-gap: 26px; }
    .about-fact { padding: 30px 12px 12px; }
    .about-partners-shell { width: calc(100% - 64px); }
    .about-partners-track { grid-auto-columns: calc((100% - 48px) / 3); }
    .about-partners-control.is-previous { left: -24px; }
    .about-partners-control.is-next { right: -24px; }
}

@media (max-width: 720px) {
    .about-shell { width: calc(100% - 36px); }
    .about-hero { height: 68svh; min-height: 430px; }
    .about-hero-copy { right: 24px; bottom: 14%; left: 24px; }
    .about-hero-copy h1 { font-size: 38px; }
    .about-hero-copy span { margin-top: 20px; font-size: 15px; }
    .about-scroll-cue { right: 18px; width: 60px; height: 60px; }
    .about-intro { padding: 82px 0 72px; }
    .about-section-heading { display: block; margin-bottom: 34px; }
    .about-section-heading h2 { font-size: 34px; }
    .about-intro-copy { grid-template-columns: 1fr; gap: 24px; font-size: 15px; line-height: 1.9; }
    .about-facts { padding: 8px 0 48px; }
    .about-facts-shell { grid-template-columns: repeat(2, minmax(0, 1fr)); width: calc(100% - 36px); gap: 28px 16px; }
    .about-fact { padding: 22px 0 8px; }
    .about-fact strong { min-height: 62px; font-size: clamp(39px, 11.5vw, 50px); }
    .about-fact.is-certification strong { font-size: clamp(26px, 7.8vw, 34px); }
    .about-fact p { font-size: 13px; }
    .about-factory-banner { height: 220px; margin-bottom: 82px; }
    .about-factory-banner img { height: 100%; aspect-ratio: auto; object-position: center; }
    .about-partners { padding: 6px 0 84px; }
    .about-partners-shell { width: calc(100% - 36px); }
    .about-partners-heading { display: block; margin-bottom: 34px; }
    .about-partners-heading h2 { font-size: 38px; }
    .about-partners-heading span { font-size: 15px; }
    .about-partners-progress { width: 100%; margin-top: 28px; }
    .about-partners-track { grid-auto-columns: min(82vw, 310px); gap: 16px; padding-bottom: 2px; }
    .about-partners-control { display: none; }
    .about-partner-card h3 { min-height: 68px; padding: 18px 15px; font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
    .about-scroll-cue i::after { animation: none; }
    .about-partners-track { scroll-behavior: auto; }
    .about-partner-card img,
    .js .about-partners,
    .js .about-fact strong,
    .js .about-fact p { transition: none; }
}