/* Interior pages share the existing APEC typography, palette and container. */
.platform-page {
    --platform-ink: #002d74;
    --platform-body: #434343;
    --platform-link: #0060a0;
    --platform-line: #dfe7ee;
    --platform-tint: #eaf7fc;
    color: var(--platform-body);
}

.platform-page-hero {
    align-items: center;
    background: #001b46;
    color: #fff;
    display: flex;
    min-height: 368px;
    overflow: hidden;
    position: relative;
}

.platform-page-hero > picture,
.platform-page-hero > picture > img {
    display: block;
    height: 100%;
    inset: 0;
    position: absolute;
    width: 100%;
}

.platform-page-hero > picture > img {
    object-fit: cover;
    object-position: center;
}

.platform-page-hero::after {
    background: linear-gradient(90deg, rgba(0, 27, 70, .94) 0%, rgba(0, 27, 70, .78) 36%, rgba(0, 27, 70, .3) 70%, rgba(0, 27, 70, .1) 100%);
    content: "";
    inset: 0;
    pointer-events: none;
    position: absolute;
}

.platform-page-hero .platform-page-hero__inner {
    padding: 54px 24px 58px;
    position: relative;
    z-index: 1;
}

.platform-page-hero__copy {
    max-width: 660px;
}

.platform-page-hero .platform-page-hero__eyebrow {
    color: #a9dff2;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .12em;
    line-height: 1.5;
    margin: 0 0 18px;
}

.platform-page-hero h1 {
    color: #fff;
    font-family: Montserrat, "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Noto Sans CJK SC", Verdana, sans-serif;
    font-size: clamp(34px, 3.1vw, 44px);
    font-weight: 600;
    line-height: 1.3;
    margin: 0;
    overflow-wrap: break-word;
    text-wrap: balance;
}

.platform-page-hero .platform-page-hero__intro {
    color: #edf5fc;
    font-size: 18px;
    font-weight: 400;
    line-height: 1.75;
    margin: 22px 0 0;
    max-width: 620px;
    text-wrap: pretty;
}

.platform-page-hero__credit {
    bottom: 12px;
    color: #fff;
    font-size: 11px;
    line-height: 1.5;
    position: absolute;
    right: 24px;
    text-shadow: 0 1px 4px #001b46;
    z-index: 1;
}

#mainContent.platform-page > .platform-page-layout {
    align-items: start;
    display: grid;
    gap: 56px;
    grid-template-columns: 224px minmax(0, 1fr);
    margin: 0 auto;
    padding: 56px 24px 72px;
}

.platform-page .platform-sidebar {
    align-self: start;
    min-width: 0;
    position: sticky;
    top: 115px;
}

.platform-page .platform-sidebar h2 {
    color: var(--platform-ink);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    margin: 0 0 16px;
    padding: 0 14px;
}

.platform-sidebar ul,
.platform-mobile-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.platform-sidebar li,
.platform-mobile-nav li {
    margin: 0;
    padding: 0;
}

.platform-sidebar li + li {
    border-top: 1px solid var(--platform-line);
}

.platform-sidebar a,
.platform-mobile-nav nav a {
    align-items: center;
    border-left: 3px solid transparent;
    color: var(--platform-body);
    display: flex;
    font-size: 15px;
    font-weight: 400;
    line-height: 1.55;
    min-height: 48px;
    padding: 12px 14px;
    text-decoration: none;
    transition: color .15s ease, background-color .15s ease;
}

.platform-sidebar a:hover,
.platform-mobile-nav nav a:hover {
    background: #f4f8fc;
    color: var(--platform-ink);
    text-decoration: none;
}

.platform-sidebar a[aria-current="page"],
.platform-mobile-nav nav a[aria-current="page"] {
    background: var(--platform-tint);
    border-left-color: var(--platform-ink);
    color: var(--platform-ink);
    font-weight: 600;
}

.platform-page a:focus-visible,
.platform-mobile-nav summary:focus-visible {
    outline: 3px solid #3f88c5;
    outline-offset: 3px;
}

.platform-page .platform-mobile-nav {
    display: none;
}

.platform-page-content {
    color: var(--platform-body);
    font-family: Inter, "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Noto Sans CJK SC", Tahoma, sans-serif;
    font-size: 18px;
    line-height: 1.8;
    min-width: 0;
    overflow-wrap: break-word;
}

.platform-page-content > p,
.platform-page-content > section > p,
.platform-page-content p.lh-base {
    line-height: 1.8 !important;
    margin: 0 0 24px;
}

/* Two-character first-line indent for narrative article paragraphs. */
.platform-page-content > p:not(.small),
.platform-page-content p.lh-base:not(.small),
.platform-page-content blockquote > p {
    text-indent: 2em;
}

.platform-page-content .platform-lead {
    color: #243b55;
    font-size: 19px;
}

.platform-page-content > h2,
.platform-page-content > section > h2,
.platform-page-content > div > h2 {
    color: var(--platform-ink);
    font-size: 27px;
    font-weight: 600;
    line-height: 1.4;
    margin: 36px 0 20px;
}

.platform-page-content > h3,
.platform-page-content > section > h3,
.platform-page-content > div > h3 {
    color: var(--platform-ink);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.5;
    margin: 30px 0 14px;
}

.platform-page-content > h2:first-child,
.platform-page-content > section:first-child > h2:first-child {
    margin-top: 0;
}

.platform-page-content a {
    color: var(--platform-link);
    text-underline-offset: 4px;
}

.platform-page-content a:hover {
    color: #002d74;
}

.platform-page-content ul:not([class]),
.platform-page-content ul.lh-base {
    line-height: 1.8 !important;
    margin: 0 0 26px;
    padding-left: 24px;
}

.platform-page-content li + li {
    margin-top: 12px;
}

.platform-page-content .platform-positioning-quote {
    background: var(--platform-tint);
    border-left: 4px solid #0060a0;
    border-radius: 0 8px 8px 0;
    color: #17476b;
    margin: 30px 0 36px;
    padding: 24px 28px;
}

.platform-positioning-quote p:last-child {
    margin-bottom: 0;
}

.platform-positioning-quote strong {
    font-weight: 600;
}

.platform-page-content .platform-figure {
    margin: 30px 0;
}

.platform-page-content .platform-figure figcaption {
    color: #677480;
    font-size: 13px;
    line-height: 1.6;
    margin-top: 10px;
}

.platform-page-content .small {
    color: #677480;
    font-size: 14px;
    line-height: 1.7 !important;
}

.platform-page-content .platform-policy-summary {
    border-bottom: 1px solid var(--platform-line);
    margin: 0 0 30px;
    padding: 0 0 28px;
}

.platform-policy-summary h2 {
    font-size: 24px;
    margin-top: 0;
}

.platform-policy-summary h2 a {
    color: var(--platform-ink);
    text-decoration: none;
}

.platform-policy-summary h2 a:hover {
    text-decoration: underline;
}

.platform-policy-summary p:last-child {
    margin-bottom: 0;
}

.platform-page-neighbors {
    border-top: 1px solid var(--platform-line);
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 42px;
    padding-top: 18px;
}

.platform-page-neighbors a {
    display: flex;
    flex-direction: column;
    gap: 4px;
    justify-content: center;
    min-height: 72px;
    padding: 8px 0;
    text-decoration: none;
}

.platform-page-neighbors a:last-child:not(:first-child) {
    text-align: right;
}

.platform-page-neighbors span {
    color: #677480;
    font-size: 13px;
    line-height: 1.5;
}

.platform-page-neighbors strong {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.6;
}

.platform-page-neighbors a:hover strong {
    text-decoration: underline;
    text-underline-offset: 4px;
}

@media (max-width: 991px) {
    #mainContent.platform-page > .platform-page-layout {
        gap: 28px;
        grid-template-columns: minmax(0, 1fr);
        padding-top: 28px;
        padding-bottom: 48px;
    }

    .platform-page .platform-sidebar {
        display: none;
    }

    .platform-page .platform-mobile-nav {
        background: #fff;
        border: 1px solid var(--platform-line);
        border-radius: 8px;
        display: block;
        min-width: 0;
    }

    .platform-mobile-nav summary {
        color: var(--platform-ink);
        cursor: pointer;
        font-size: 15px;
        font-weight: 600;
        line-height: 24px;
        list-style: disclosure-closed inside;
        min-height: 52px;
        padding: 14px 16px;
    }

    .platform-mobile-nav[open] summary {
        border-bottom: 1px solid var(--platform-line);
        list-style-type: disclosure-open;
    }

    .platform-mobile-nav summary span {
        color: #677480;
        float: right;
        font-size: 14px;
        font-weight: 400;
        margin-left: 10px;
        max-width: 60%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .platform-mobile-nav nav {
        padding: 6px 0;
    }

    .platform-mobile-nav nav a {
        padding-left: 20px;
    }
}

@media (max-width: 767px) {
    .platform-page-hero {
        min-height: 320px;
    }

    .platform-page-hero::after {
        background: linear-gradient(90deg, rgba(0, 27, 70, .9), rgba(0, 27, 70, .58));
    }

    .platform-page-hero .platform-page-hero__inner {
        padding-top: 40px;
        padding-bottom: 46px;
    }

    .platform-page-hero .platform-page-hero__eyebrow {
        font-size: 13px;
        margin-bottom: 14px;
    }

    .platform-page-hero h1 {
        font-size: clamp(28px, 7.7vw, 32px);
        line-height: 1.35;
        text-wrap: pretty;
    }

    .platform-page-hero .platform-page-hero__intro {
        font-size: 16px;
        line-height: 1.75;
        margin-top: 18px;
    }

    .platform-page-content,
    .platform-page-content .platform-lead {
        font-size: 17px;
    }

    .platform-page-content > h2,
    .platform-page-content > section > h2,
    .platform-page-content > div > h2 {
        font-size: 24px;
        margin-top: 30px;
    }

    .platform-page-content > h3,
    .platform-page-content > section > h3,
    .platform-page-content > div > h3 {
        font-size: 20px;
    }

    .platform-page-content .platform-positioning-quote {
        margin: 26px 0;
        padding: 20px;
    }

    .platform-page-neighbors {
        gap: 18px;
        margin-top: 32px;
    }

    .platform-page-neighbors strong {
        font-size: 15px;
    }
}

body.dark-mode .platform-page {
    --platform-ink: #bde5ff;
    --platform-body: #e5edf5;
    --platform-link: #bde5ff;
    --platform-line: #33465c;
    --platform-tint: #142c46;
}

body.dark-mode .platform-page-content .platform-lead,
body.dark-mode .platform-page-content .platform-positioning-quote {
    color: #e5edf5;
}

body.dark-mode .platform-page .platform-mobile-nav {
    background: #081a2e;
}

body.dark-mode .platform-sidebar a:hover,
body.dark-mode .platform-mobile-nav nav a:hover {
    background: #17334f;
}

body.dark-mode .platform-page-content a:hover {
    color: #fff;
}

body.dark-mode .platform-page-content .small,
body.dark-mode .platform-page-content .platform-figure figcaption,
body.dark-mode .platform-mobile-nav summary span,
body.dark-mode .platform-page-neighbors span {
    color: #b7c6d5;
}

@media (prefers-reduced-motion: reduce) {
    .platform-page *,
    .platform-page *::before,
    .platform-page *::after {
        animation: none !important;
        scroll-behavior: auto !important;
        transition: none !important;
    }
}