.about-page {
    --about-blue: #1987ff;
    --about-blue-light: #64b6ff;
    --about-ink: #07111f;
    --about-muted: #596779;
    --about-line: #e4eaf2;
    overflow-x: hidden;
    background: #fff;
    color: var(--about-ink);
}

.about-page .site-header-shell {
    position: sticky;
}

.about-wrap {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    padding: 24px 0 72px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

.about-hero {
    position: relative;
    overflow: hidden;
    border-radius: 34px;
    padding: 58px 44px 48px;
    background:
        radial-gradient(circle at 83% 12%, rgba(25, 135, 255, .38), transparent 31%),
        radial-gradient(circle at 9% 92%, rgba(93, 179, 255, .22), transparent 35%),
        linear-gradient(135deg, #030711 0%, #08111f 48%, #0b1320 100%);
    box-shadow: 0 24px 70px rgba(2, 6, 23, .24);
    color: #fff;
}

.about-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 999px;
    padding: 8px 13px;
    background: rgba(255, 255, 255, .08);
    color: rgba(255, 255, 255, .84);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

.about-kicker span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--about-blue-light);
    box-shadow: 0 0 0 6px rgba(25, 135, 255, .18);
}

.about-hero h1 {
    max-width: 930px;
    margin: 0;
    font-size: clamp(48px, 7vw, 88px);
    font-weight: 950;
    letter-spacing: -.07em;
    line-height: 1.02;
}

.about-hero h1 em {
    color: var(--about-blue-light);
    font-style: normal;
}

.about-hero > p {
    max-width: 810px;
    margin: 26px 0 0;
    color: rgba(255, 255, 255, .82);
    font-size: clamp(18px, 2vw, 23px);
    font-weight: 620;
    letter-spacing: -.02em;
    line-height: 1.7;
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.about-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 13px 20px;
    font-size: 15px;
    font-weight: 900;
    text-decoration: none;
}

.about-button-primary {
    background: var(--about-blue);
    box-shadow: 0 12px 26px rgba(25, 135, 255, .28);
    color: #fff;
}

.about-button-primary:hover,
.about-button-primary:focus-visible {
    background: #0879ed;
}

.about-button-quiet {
    border: 1px solid rgba(255, 255, 255, .19);
    background: rgba(255, 255, 255, .08);
    color: #fff;
}

.about-button:focus-visible {
    outline: 3px solid rgba(25, 135, 255, .26);
    outline-offset: 3px;
}

.about-section {
    margin-top: 24px;
}

.about-two-column,
.about-compare {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.about-card,
.about-system,
.about-belief,
.about-final {
    border: 1px solid var(--about-line);
    background: #fff;
    box-shadow: 0 12px 36px rgba(15, 23, 42, .065);
}

.about-card {
    border-radius: 28px;
    padding: 30px;
}

.about-card-dark {
    border-color: rgba(255, 255, 255, .08);
    background: #05070c;
    box-shadow: 0 18px 46px rgba(2, 6, 23, .22);
    color: #fff;
}

.about-eyebrow {
    margin-bottom: 13px;
    color: var(--about-blue);
    font-size: 13px;
    font-weight: 950;
    letter-spacing: .12em;
}

.about-card h2,
.about-system > h2 {
    margin: 0;
    font-size: clamp(29px, 3.5vw, 45px);
    font-weight: 950;
    letter-spacing: -.055em;
    line-height: 1.2;
}

.about-card > p,
.about-section-intro {
    margin: 17px 0 0;
    color: var(--about-muted);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -.015em;
    line-height: 1.75;
}

.about-card-dark > p {
    color: rgba(255, 255, 255, .7);
}

.about-list {
    margin: 21px 0 0;
    padding: 0;
    list-style: none;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    border-top: 1px solid rgba(15, 23, 42, .07);
    padding: 10px 0;
    color: #182235;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.65;
}

.about-list li:first-child {
    border-top: 0;
}

.about-list b,
.about-compare-box b {
    flex: 0 0 auto;
    color: var(--about-blue);
    font-weight: 950;
}

.about-card-dark .about-list li {
    border-color: rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .86);
}

.about-system {
    border-radius: 32px;
    padding: 36px;
    background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
}

.about-section-intro {
    max-width: 860px;
}

.about-layers {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-top: 28px;
}

.about-layer {
    position: relative;
    overflow: hidden;
    min-height: 260px;
    border: 1px solid rgba(25, 135, 255, .14);
    border-radius: 26px;
    padding: 23px;
    background: #fff;
}

.about-layer::before {
    position: absolute;
    top: -42px;
    right: -42px;
    width: 104px;
    height: 104px;
    border-radius: 50%;
    background: rgba(25, 135, 255, .09);
    content: "";
}

.about-layer-icon {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    margin-bottom: 18px;
    border-radius: 16px;
    background: #eef6ff;
    color: var(--about-blue);
}

.about-layer-icon svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.1;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.about-layer h3 {
    position: relative;
    margin: 0;
    font-size: 21px;
    font-weight: 950;
    letter-spacing: -.035em;
}

.about-layer p {
    position: relative;
    margin: 13px 0 0;
    color: #556170;
    font-size: 15px;
    font-weight: 620;
    line-height: 1.7;
}

.about-compare-box {
    border: 1px solid var(--about-line);
    border-radius: 30px;
    padding: 31px;
}

.about-compare-old {
    background: #f8fafc;
}

.about-compare-new {
    border-color: #06101f;
    background: #06101f;
    color: #fff;
}

.about-compare-box h2 {
    margin: 0 0 19px;
    font-size: 29px;
    font-weight: 950;
    letter-spacing: -.045em;
}

.about-compare-box > div {
    display: flex;
    gap: 11px;
    border-top: 1px solid rgba(15, 23, 42, .08);
    padding: 13px 0;
    color: #445063;
    font-size: 16px;
    font-weight: 750;
    line-height: 1.55;
}

.about-compare-new > div {
    border-color: rgba(255, 255, 255, .12);
    color: rgba(255, 255, 255, .82);
}

.about-belief {
    display: grid;
    overflow: hidden;
    grid-template-columns: 1.1fr .9fr;
    border-radius: 34px;
}

.about-belief-copy {
    padding: 40px;
}

.about-belief-copy h2 {
    margin: 0;
    font-size: clamp(33px, 4vw, 56px);
    font-weight: 950;
    letter-spacing: -.065em;
    line-height: 1.16;
}

.about-belief-copy h2 span,
.about-final h2 span {
    color: var(--about-blue);
}

.about-belief-copy p {
    margin: 20px 0 0;
    color: var(--about-muted);
    font-size: 18px;
    font-weight: 620;
    line-height: 1.75;
}

.about-principles {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 13px;
    padding: 36px;
    background: #05070c;
    color: #fff;
}

.about-principles > div {
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 20px;
    padding: 17px;
    background: rgba(255, 255, 255, .045);
}

.about-principles b,
.about-principles span {
    display: block;
}

.about-principles b {
    margin-bottom: 6px;
    font-size: 16px;
}

.about-principles span {
    color: rgba(255, 255, 255, .66);
    font-size: 14px;
    font-weight: 620;
    line-height: 1.6;
}

.about-final {
    border-color: rgba(25, 135, 255, .12);
    border-radius: 34px;
    padding: 52px 26px;
    background:
        radial-gradient(circle at 50% 0%, rgba(25, 135, 255, .18), transparent 37%),
        #f7fbff;
    text-align: center;
}

.about-final h2 {
    max-width: 900px;
    margin: 0 auto;
    font-size: clamp(35px, 5vw, 62px);
    font-weight: 950;
    letter-spacing: -.065em;
    line-height: 1.18;
}

.about-final p {
    max-width: 790px;
    margin: 20px auto 0;
    color: #506072;
    font-size: 18px;
    font-weight: 620;
    line-height: 1.7;
}

.about-final .about-button {
    margin-top: 28px;
}

@media (max-width: 900px) {
    .about-wrap {
        width: min(100% - 24px, 1180px);
        padding-top: 16px;
    }

    .about-hero {
        border-radius: 28px;
        padding: 44px 26px 36px;
    }

    .about-hero h1 {
        font-size: clamp(45px, 10vw, 64px);
    }

    .about-two-column,
    .about-compare,
    .about-belief {
        grid-template-columns: 1fr;
    }

    .about-layers {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-card,
    .about-system,
    .about-compare-box,
    .about-belief-copy,
    .about-principles {
        padding: 26px;
    }
}

@media (max-width: 560px) {
    .about-wrap {
        width: calc(100% - 20px);
        padding: 10px 0 48px;
    }

    .about-hero {
        border-radius: 24px;
        padding: 34px 20px 28px;
    }

    .about-kicker {
        font-size: 12px;
        letter-spacing: .035em;
    }

    .about-hero h1 {
        font-size: 43px;
        line-height: 1.08;
    }

    .about-hero > p {
        font-size: 17px;
        line-height: 1.75;
    }

    .about-button {
        width: 100%;
    }

    .about-card,
    .about-system,
    .about-compare-box,
    .about-belief-copy,
    .about-principles {
        padding: 22px;
    }

    .about-card h2,
    .about-system > h2 {
        font-size: 30px;
    }

    .about-layers {
        grid-template-columns: 1fr;
    }

    .about-layer {
        min-height: auto;
    }

    .about-final {
        padding: 40px 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .about-page * {
        scroll-behavior: auto !important;
    }
}