/* About-page introduction, scoped so the existing lower sections stay unchanged. */
.about-introduction {
    --about-blue: #060679;
    --about-ink: #435381;
    --about-background: #edf7ff;
    --about-purple: #be00b4;
    --about-orange: #ff751f;
    --about-teal: #5fe2ff;
    background: var(--about-background);
    color: var(--about-ink);
}
.about-introduction .about-container {
    width: min(1180px, calc(100% - 8rem));
    margin-inline: auto;
}
.about-introduction h1,
.about-introduction h2,
.about-introduction h3 {
    margin-top: 0;
    color: var(--about-blue);
}
.about-introduction h2 {
    margin-bottom: 1rem;
    font-size: clamp(2rem, 3.2vw, 2.75rem);
    line-height: 1.15;
    letter-spacing: -0.035em;
}
.about-introduction p {
    margin: 0 0 1.15rem;
    font-size: 1rem;
    line-height: 1.5;
}
.about-introduction p:last-child { margin-bottom: 0; }

/* Match the dimensions and breakpoints of the Expertises hero. */
.about-introduction .about-banner {
    position: relative;
    display: grid;
    min-height: 286px;
    isolation: isolate;
    overflow: hidden;
    border-top: 1px solid #e7edf8;
    border-bottom: 1px solid #dfe8f7;
    background: #dceaff;
}
.about-introduction .about-banner__image {
    position: absolute;
    inset: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 45%;
}
.about-introduction .about-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgb(237 245 255 / 80%), rgb(237 245 255 / 25%) 57%, transparent 80%);
}
.about-introduction .about-banner__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: min(1180px, calc(100% - 36px));
    min-height: 286px;
    margin-inline: auto;
    padding: 18px 0 14px;
    text-align: center;
}
.about-introduction .about-banner h1 {
    margin: 0;
    color: var(--about-blue);
    font-size: clamp(40px, 4.5vw, 58px);
    line-height: 1.02;
    letter-spacing: -0.04em;
}
.about-introduction .about-banner__subtitle {
    margin: 12px 0 0;
    color: #28408e;
    font-family: var(--font-primary);
    font-size: clamp(14px, 1.35vw, 18px);
    font-weight: 700;
    line-height: 1.5;
}
.about-introduction .about-chapter {
    position: relative;
    padding-block: 3rem;
    background:
        radial-gradient(ellipse at 48% 35%, #f9fcff, transparent 75%),
        #eaf5ff;
}
.about-introduction .about-split {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
    gap: 3rem;
}
.about-introduction .about-path .about-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 2.5rem;
}
.about-introduction .about-path h2 {
    color: #1e4fff;
    font-size: clamp(1.3rem, 2.5vw, 2.15rem);
    white-space: nowrap;
    letter-spacing: -0.035em;
}
.about-introduction .about-path p { line-height: 1.48; }

.about-introduction .about-history h2,
.about-introduction .about-vision h2 {
    color: #1e4fff;
}
.about-introduction .about-video-block,
.about-introduction .about-video-block.in-view {
    align-self: center;
    margin-top: 0;
    opacity: 1;
    transform: none;
    filter: none;
    animation: none;
}
.about-introduction .about-video-block > p {
    color: #5d6c87 !important;
    font-size: 0.8rem !important;
}

/* Narrative at left and the four dated milestones at right. */
.about-introduction .about-history__bullets {
    list-style: none;
    margin: 1.25rem 0 1.6rem;
    padding: 0 0 0 0.7rem;
}
.about-introduction .about-history__bullets li {
    position: relative;
    padding-left: 1.25rem;
    font-size: 1rem;
    line-height: 1.5;
}
.about-introduction .about-history__bullets li + li { margin-top: 0.4rem; }
.about-introduction .about-history__bullets li::before {
    content: "";
    position: absolute;
    top: 0.55em;
    left: 0;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: #234eff;
}
.about-introduction .about-history__bullets li:nth-child(2)::before { background: var(--about-purple); }
.about-introduction .about-history__bullets li:nth-child(3)::before { background: #ff751f; }
.about-introduction .about-history__milestones {
    --history-axis-size: 22px;
    --history-icon-size: 5rem;
    --history-row-gap: 1.3rem;
    position: relative;
    display: grid;
    gap: var(--history-row-gap);
    margin: 0;
    padding: 0;
    list-style: none;
}
.about-introduction .about-history__milestone {
    --milestone-color: #234eff;
    position: relative;
    display: grid;
    grid-template-columns: var(--history-axis-size) var(--history-icon-size) minmax(0, 1fr);
    align-items: start;
    gap: 1.3rem;
}
/* Every segment joins the exact centers of two dots, even when text wraps. */
.about-introduction .about-history__milestone:not(:last-child)::before {
    content: "";
    position: absolute;
    top: calc(var(--history-icon-size) / 2);
    bottom: calc(0px - var(--history-row-gap) - var(--history-icon-size) / 2);
    left: calc(var(--history-axis-size) / 2);
    width: 2px;
    transform: translateX(-50%);
    background: #3970ff;
    pointer-events: none;
}
.about-introduction .about-history__dot {
    position: relative;
    z-index: 1;
    justify-self: center;
    width: var(--history-axis-size);
    height: var(--history-axis-size);
    margin-top: calc((var(--history-icon-size) - var(--history-axis-size)) / 2);
    border: 3px solid var(--milestone-color);
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 0 3px rgb(255 255 255 / 90%);
}
.about-introduction .about-history__dot::before,
.about-introduction .about-history__dot::after {
    content: "";
    position: absolute;
    box-sizing: border-box;
    border-radius: 50%;
    pointer-events: none;
}
.about-introduction .about-history__dot::before {
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    transform: translate(-50%, -50%);
    background: var(--milestone-color);
}
.about-introduction .about-history__dot::after {
    inset: -5px;
    border: 2px solid var(--milestone-color);
    animation: aboutHistoryDotPing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}
.about-introduction .about-history__milestone:nth-child(2) .about-history__dot::after { animation-delay: 0.3s; }
.about-introduction .about-history__milestone:nth-child(3) .about-history__dot::after { animation-delay: 0.6s; }
.about-introduction .about-history__milestone:nth-child(4) .about-history__dot::after { animation-delay: 0.9s; }
@keyframes aboutHistoryDotPing {
    from { transform: scale(0.8); opacity: 0.8; }
    to { transform: scale(2.2); opacity: 0; }
}
.about-introduction .about-history__date {
    display: block;
    margin-bottom: 0.05rem;
    color: var(--milestone-color);
    font-family: var(--font-primary);
    font-size: 1.17rem;
    font-weight: 700;
    line-height: 1.2;
}
.about-introduction .about-history__milestone h3 {
    margin-bottom: 0.35rem;
    font-size: 1.17rem;
    line-height: 1.25;
    letter-spacing: -0.025em;
}
.about-introduction .about-history__milestone p {
    font-size: 0.95rem;
    line-height: 1.43;
}
.about-introduction .about-icon {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 50%;
    color: var(--icon-color, #234eff);
    background: var(--icon-background, #e0eeff);
}
.about-introduction .about-icon svg {
    display: block;
    width: 2.6rem;
    height: 2.6rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.45;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.about-introduction .about-icon img {
    display: block;
    width: 2.6rem;
    height: 2.6rem;
    object-fit: contain;
}
.about-introduction .about-history__milestone .about-icon {
    width: var(--history-icon-size);
    height: var(--history-icon-size);
    color: #182bfa;
    background: #e0f0ff;
}
.about-introduction .about-accent-purple {
    --milestone-color: #be00b4;
    --icon-color: #be00b4;
    --icon-background: #f8e5ff;
}
.about-introduction .about-accent-orange {
    --milestone-color: #ff751f;
    --icon-color: #ff751f;
    --icon-background: #fff0dc;
}
.about-introduction .about-accent-teal {
    --milestone-color: #5fe2ff;
    --icon-color: #5fe2ff;
    --icon-background: #ddf7fb;
}
.about-introduction .about-chapter-heading {
    max-width: 850px;
    margin: 0 auto 2rem;
    text-align: center;
}
.about-introduction .about-chapter-heading > p {
    max-width: 780px;
    margin-inline: auto;
}

/* Four illustrated steps joined by the dotted mountain trail. */
.about-introduction .about-missions {
    padding-block: 2.75rem 3rem;
    background: #e3f3ff;
}
.about-introduction .about-missions h2 { color: #064cff; }
.about-introduction .about-missions h2 span {
    color: #b20ce4;
    background: linear-gradient(90deg, #6b21ed, #ce00dc);
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.about-introduction .about-missions__journey { position: relative; margin-top: 2rem; }
.about-introduction .about-missions__trail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4rem;
    overflow: visible;
}
.about-introduction .about-missions__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
    margin: 0;
    padding: 3.6rem 0 0;
    list-style: none;
}
.about-introduction .about-mission-card {
    position: relative;
    padding: 0 1.1rem 1.6rem;
    border-radius: 1rem;
    background: #fff;
    text-align: center;
    box-shadow: 0 10px 30px rgb(70 124 189 / 4%);
}
.about-introduction .about-mission-card .about-icon {
    position: relative;
    width: 5.7rem;
    height: 5.7rem;
    margin: -2.65rem auto 0.9rem;
    border: 5px solid white;
}
.about-introduction .about-mission-card .about-icon::before {
    content: "";
    position: absolute;
    top: -1.2rem;
    left: 50%;
    width: 1.1rem;
    height: 1.1rem;
    transform: translateX(-50%);
    border: 3px solid white;
    border-radius: 50%;
    background: var(--icon-color, #234eff);
    box-shadow: 0 0 8px color-mix(in srgb, var(--icon-color, #234eff) 30%, transparent);
}
.about-introduction .about-icon .about-mission-art {
    width: 4.3rem;
    height: 4.3rem;
    stroke: none;
}
.about-introduction .about-mission-card h3 {
    margin-bottom: 0.75rem;
    color: var(--icon-color, #234eff);
    font-size: 1.15rem;
    line-height: 1.25;
    letter-spacing: -0.025em;
}
.about-introduction .about-mission-card.about-accent-orange,
.about-introduction .about-mission-card.about-accent-teal {
    --icon-color: var(--milestone-color);
}
.about-introduction .about-mission-card p {
    font-size: 0.95rem;
    line-height: 1.45;
}

/* The landscape belongs behind the text, without a separate image card. */
.about-introduction .about-vision,
.about-introduction .about-convictions {
    isolation: isolate;
    overflow: hidden;
    background: #edf7ff;
}
.about-introduction .about-vision {
    display: flex;
    align-items: center;
    min-height: clamp(520px, 48vw, 660px);
}
.about-introduction .about-vision::before,
.about-introduction .about-convictions::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background: url("../images/about/vision-summit.webp") center center / cover no-repeat;
    opacity: 0.45;
    pointer-events: none;
}
.about-introduction .about-vision::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(90deg, #edf7ff 0%, rgb(237 247 255 / 86%) 25%, rgb(237 247 255 / 58%) 42%, rgb(237 247 255 / 10%) 100%);
    pointer-events: none;
}
.about-introduction .about-vision__copy { width: min(54%, 660px); }
.about-introduction .about-vision__copy > p:first-of-type { width: 125%; }
.about-introduction .about-vision__quote {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.65rem 0 1.35rem;
    padding: 1.15rem 1.4rem;
    border-radius: 1rem;
    background: rgb(207 234 255 / 70%);
}
.about-introduction .about-vision__quote-text {
    flex: 1;
}
.about-introduction .about-vision__quote-text p {
    margin: 0;
    color: var(--about-blue);
    font-family: var(--font-primary);
    font-size: clamp(1.1rem, 1.8vw, 1.55rem);
    font-weight: 700;
    line-height: 1.35;
}
.about-introduction .about-vision__quote-text p + p { margin-top: 0.25rem; }
.about-introduction .about-vision__quote-mark {
    color: #00aeec;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(3.2rem, 4vw, 5rem);
    font-weight: 700;
    line-height: 1;
    flex-shrink: 0;
}
.about-introduction .about-vision__quote-mark--open {
    align-self: flex-start;
    transform: translateY(-0.1em);
}
.about-introduction .about-vision__quote-mark--close {
    align-self: flex-end;
    transform: translateY(0.12em);
}
.about-introduction .about-convictions {
    min-height: 460px;
    padding-block: 1.5rem 5rem;
}
.about-introduction .about-convictions::before {
    background-image: url("../images/about/convictions-background.webp");
    background-position: center calc(100% + 3rem);
    background-size: 100% auto;
    opacity: 0.7;
}
.about-introduction .about-convictions::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(#edf7ff 0%, rgb(237 247 255 / 95%) 23%, rgb(237 247 255 / 45%) 65%, rgb(237 247 255 / 6%) 100%);
    pointer-events: none;
}
.about-introduction .about-convictions h2 {
    position: relative;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    color: #1e4fff;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}
.about-introduction .about-convictions .about-chapter-heading { margin-bottom: 2.25rem; }
.about-introduction .about-convictions .about-chapter-heading p { line-height: 1.4; }
.about-introduction .about-equation {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 0.9rem;
    max-width: 1040px;
    margin-inline: auto;
}
.about-introduction .about-equation__term {
    display: flex;
    flex-direction: column;
    align-items: center;
    align-self: stretch;
    min-width: 0;
    padding: 0 0.75rem 1rem;
    border-radius: 0.9rem;
    background: white;
    box-shadow: 0 8px 24px rgb(43 78 132 / 4%);
    text-align: center;
}
.about-introduction .about-equation__term .about-icon {
    width: 3.8rem;
    height: 3.8rem;
    margin: -1.65rem auto 0.6rem;
    border: 3px solid white;
}
.about-introduction .about-equation__term .about-icon svg { width: 2.1rem; height: 2.1rem; }
.about-introduction .about-equation__term .about-icon img { width: 2.1rem; height: 2.1rem; }
.about-introduction .about-equation__term strong {
    color: var(--icon-color, #234eff);
    font-family: var(--font-primary);
    font-size: 1.08rem;
    font-weight: 700;
    line-height: 1.4;
}
.about-introduction .about-equation__term p {
    margin: 0.35rem 0 0;
    font-size: 0.82rem;
    line-height: 1.45;
}
.about-introduction .about-equation__operator {
    color: #4366f9;
    font-size: 1.8rem;
    font-weight: 700;
}
.about-introduction .about-equation__term--result {
    background: linear-gradient(135deg, #00a5ff, #0761ff);
}
.about-introduction .about-equation__term--result strong,
.about-introduction .about-equation__term--result p { color: white; }
.about-introduction .about-equation__term--result .about-icon { color: white; background: #25c8ed; }
.about-introduction .about-equation__term--result .about-icon:has(img) { background: #fff; }

@media (max-width: 1100px) {
    .about-introduction .about-container { width: calc(100% - 4rem); }
    .about-introduction .about-split { gap: 2rem; }
    .about-introduction .about-history__milestones { --history-icon-size: 3.6rem; }
    .about-introduction .about-history__milestone { gap: 0.85rem; }
    .about-introduction .about-history__milestone .about-icon svg { width: 2rem; height: 2rem; }
    .about-introduction .about-history__milestone .about-icon img { width: 2rem; height: 2rem; }
    .about-introduction .about-equation { gap: 0.5rem; }
    .about-introduction .about-equation__term { padding-inline: 0.45rem; }
    .about-introduction .about-equation__term strong { font-size: 0.95rem; }
    .about-introduction .about-mission-card { padding-inline: 0.75rem; }
}
@media (max-width: 900px) {
    .about-introduction .about-path .about-split,
    .about-introduction .about-history .about-split { grid-template-columns: minmax(0, 1fr); }
    .about-introduction .about-path h2 { font-size: clamp(1.1rem, 4.3vw, 2.15rem); }
    .about-introduction .about-history__milestones { --history-icon-size: 4.5rem; }
    .about-introduction .about-history__milestone { gap: 1rem; }
    .about-introduction .about-missions__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3.7rem 1.2rem; }
    .about-introduction .about-missions__trail { display: none; }
    .about-introduction .about-vision__copy { width: 78%; }
    .about-introduction .about-vision__copy > p:first-of-type { width: 100%; }
    .about-introduction .about-equation { grid-template-columns: minmax(0, 1fr); gap: 0.8rem; max-width: 340px; }
    .about-introduction .about-equation__term { position: relative; display: block; padding: 1rem 1rem 1rem 5.2rem; text-align: left; }
    .about-introduction .about-equation__term .about-icon { position: absolute; top: 50%; left: 0.85rem; width: 3.5rem; height: 3.5rem; margin: 0; transform: translateY(-50%); }
    .about-introduction .about-equation__term strong { font-size: 1.1rem; }
    .about-introduction .about-equation__operator { text-align: center; line-height: 1; }
}
@media (max-width: 700px) {
    .about-introduction .about-container { width: calc(100% - 2.5rem); }
    .about-introduction .about-banner,
    .about-introduction .about-banner__content { min-height: 400px; }
    .about-introduction .about-banner h1 { font-size: clamp(32px, 10vw, 42px); }
    .about-introduction .about-banner__subtitle { max-width: 320px; font-size: 14px; }
    .about-introduction .about-banner__image { object-position: 80% center; }
    .about-introduction .about-banner::before { background: rgb(235 244 255 / 55%); }
    .about-introduction .about-chapter { padding-block: 2.75rem; }
    .about-introduction .about-path h2 { font-size: clamp(0.94rem, 4.2vw, 1.8rem); }
    .about-introduction .about-vision { min-height: 580px; padding-bottom: 10rem; }
    .about-introduction .about-vision__copy { width: 100%; }
    .about-introduction .about-vision::before { background-size: auto 340px; background-position: right bottom; opacity: 0.3; }
    .about-introduction .about-vision::after { background: linear-gradient(#edf7ff 0%, rgb(237 247 255 / 93%) 52%, rgb(237 247 255 / 5%) 100%); }
    .about-introduction .about-vision__quote { gap: 0.7rem; padding: 1rem; }
    .about-introduction .about-vision__quote-mark { font-size: 3.5rem; }
    .about-introduction .about-convictions { padding-bottom: 10rem; }
    .about-introduction .about-convictions::before { background-size: auto 260px; background-position: right bottom; }
    .about-introduction .about-convictions .about-chapter-heading { margin-bottom: 2rem; }
    .about-introduction .about-convictions .about-chapter-heading br { display: none; }
}
@media (max-width: 520px) {
    .about-introduction .about-banner,
    .about-introduction .about-banner__content { min-height: 380px; }
    .about-introduction .about-banner__content { width: calc(100% - 24px); }
    .about-introduction .about-banner__subtitle { max-width: 290px; }
    .about-introduction .about-missions__grid { grid-template-columns: minmax(0, 1fr); }
    .about-introduction .about-history__milestones { --history-axis-size: 18px; --history-icon-size: 3.5rem; }
    .about-introduction .about-history__milestone { gap: 0.75rem; }
    .about-introduction .about-history__dot { border-width: 2px; }
    .about-introduction .about-history__dot::before { width: 6px; height: 6px; }
}
@media (prefers-reduced-motion: reduce) {
    .about-introduction .about-history__dot::after { animation: none; opacity: 0; }
}