:root {
    --wc-ink: #10202f;
    --wc-muted: #617184;
    --wc-line: #d9e2ec;
    --wc-bg: #f4f8fb;
    --wc-panel: #ffffff;
    --wc-blue: #0b5cad;
    --wc-cyan: #0ea5b7;
    --wc-red: #d4212f;
    --wc-yellow: #f0b429;
    --wc-radius: 8px;
    --wc-shadow: 0 14px 34px rgba(16, 32, 47, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--wc-ink);
    background: var(--wc-bg);
    font-family: Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.65;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

.wc-container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.wc-header--hub {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--wc-line);
}

.wc-hubbar {
    min-height: 72px;
    display: grid;
    grid-template-columns: minmax(160px, 260px) minmax(0, 1fr);
    align-items: center;
    gap: 18px;
}

.wc-brand--hub {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 260px;
    min-width: 0;
    font-size: 20px;
    font-weight: 900;
}

.wc-brand--hub img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.wc-brand--hub span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.wc-menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    background: var(--wc-panel);
    padding: 9px;
}

.wc-menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--wc-ink);
}

.wc-nav--hub {
    display: flex;
    justify-content: flex-end;
    gap: 4px;
    flex-wrap: wrap;
    min-width: 0;
}

.wc-nav--hub a,
.wc-quicknav a,
.wc-tag-cloud a {
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
}

.wc-nav--hub a {
    padding: 9px 12px;
}

.wc-nav--hub a:hover {
    background: #e8f3ff;
    color: var(--wc-blue);
}

.wc-quicknav {
    min-height: 42px;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    border-top: 1px solid var(--wc-line);
    color: var(--wc-muted);
}

.wc-quicknav span {
    color: var(--wc-blue);
    font-weight: 900;
    white-space: nowrap;
}

.wc-quicknav a {
    white-space: nowrap;
    padding: 6px 10px;
    background: #edf6ff;
}

.wc-kicker {
    margin: 0 0 9px;
    color: var(--wc-red);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0;
}

.wc-hub-hero {
    padding: 38px 0;
    background: linear-gradient(135deg, #e8f3ff 0%, #f8fbff 55%, #fff7e6 100%);
}

.wc-hub-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) 330px;
    grid-template-areas:
        "intro feed"
        "spotlight feed";
    gap: 18px;
}

.wc-hub-hero__intro,
.wc-hub-feed,
.wc-hub-spotlight,
.wc-info-tile,
.wc-faq-item,
.wc-card--hub,
.wc-hub-sidebar,
.wc-article-index,
.wc-contact-form {
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    background: var(--wc-panel);
    box-shadow: var(--wc-shadow);
}

.wc-hub-hero__intro {
    grid-area: intro;
    padding: 30px;
}

.wc-hub-hero__intro h1 {
    max-width: 760px;
    margin: 0 0 12px;
    font-size: 48px;
    line-height: 1.08;
}

.wc-hub-hero__intro p {
    max-width: 720px;
    margin: 0;
    color: var(--wc-muted);
}

.wc-hub-search,
.wc-tag-cloud,
.wc-menu-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.wc-hub-search a,
.wc-menu-chips a {
    padding: 8px 11px;
    border-radius: 999px;
    background: #edf6ff;
    color: var(--wc-blue);
    font-weight: 800;
}

.wc-hub-feed {
    grid-area: feed;
    padding: 22px;
}

.wc-hub-feed h2,
.wc-hub-sidebar h2,
.wc-article-index h2 {
    margin: 0 0 14px;
    font-size: 20px;
}

.wc-hub-feed a {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 12px;
    padding: 13px 0;
    border-top: 1px solid var(--wc-line);
}

.wc-hub-feed span {
    color: var(--wc-red);
    font-weight: 900;
}

.wc-hub-spotlight {
    grid-area: spotlight;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    overflow: hidden;
}

.wc-hub-spotlight img {
    width: 100%;
    height: 100%;
    min-height: 190px;
    object-fit: cover;
}

.wc-hub-spotlight span,
.wc-hub-spotlight h2 {
    grid-column: 2;
    margin-left: 22px;
    margin-right: 22px;
}

.wc-hub-spotlight span {
    align-self: end;
    margin-top: 22px;
    color: var(--wc-red);
    font-weight: 900;
}

.wc-hub-spotlight h2 {
    margin-top: 8px;
    font-size: 30px;
    line-height: 1.18;
}

.wc-section {
    padding: 64px 0;
}

.wc-section--surface {
    background: #eaf2f8;
}

.wc-section__heading {
    display: grid;
    grid-template-columns: minmax(0, 0.65fr) minmax(280px, 0.35fr);
    align-items: end;
    gap: 22px;
    margin-bottom: 24px;
}

.wc-section__heading h2 {
    margin: 0;
    font-size: 34px;
    line-height: 1.15;
}

.wc-section__heading span {
    color: var(--wc-muted);
}

.wc-hub-stream,
.wc-list--hub,
.wc-topic-cluster {
    display: grid;
    gap: 14px;
}

.wc-news-feature,
.wc-topic-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 16px;
    align-items: start;
}

.wc-hub-stream {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.wc-topic-cluster,
.wc-list--topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wc-headline-panel {
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    background: var(--wc-panel);
    box-shadow: var(--wc-shadow);
    padding: 20px;
}

.wc-headline-panel h3 {
    margin: 0 0 10px;
    font-size: 20px;
}

.wc-headline-panel a {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    padding: 11px 0;
    border-top: 1px solid var(--wc-line);
}

.wc-headline-panel span {
    color: var(--wc-red);
    font-weight: 900;
}

.wc-headline-panel strong {
    font-size: 14px;
    line-height: 1.45;
}

.wc-home-guide {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.wc-home-guide a {
    min-height: 118px;
    padding: 18px;
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    background: #fff;
    box-shadow: var(--wc-shadow);
}

.wc-home-guide strong,
.wc-home-guide span {
    display: block;
}

.wc-home-guide strong {
    margin-bottom: 8px;
    font-size: 18px;
}

.wc-home-guide span {
    color: var(--wc-muted);
}

.wc-card--hub {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 14px;
    padding: 12px;
}

.wc-card__media img {
    width: 100%;
    height: 100%;
    min-height: 92px;
    object-fit: cover;
    border-radius: 6px;
}

.wc-card time,
.wc-article-meta,
.wc-hub-mini {
    color: var(--wc-muted);
    font-size: 13px;
}

.wc-card h3 {
    margin: 5px 0 6px;
    font-size: 18px;
    line-height: 1.25;
}

.wc-card p {
    margin: 0;
    color: var(--wc-muted);
}

.wc-hub-navgrid,
.wc-faq-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.wc-info-tile,
.wc-faq-item {
    padding: 22px;
}

.wc-info-tile strong,
.wc-faq-item strong {
    display: block;
    margin-bottom: 8px;
    font-size: 20px;
}

.wc-info-tile p,
.wc-faq-item p,
.wc-page-content,
.wc-copy-block p {
    color: var(--wc-muted);
}

.wc-breadcrumb {
    padding: 46px 0;
    background: var(--wc-blue);
    color: #fff;
}

.wc-breadcrumb--hub {
    background: #0f375d;
}

.wc-breadcrumb--hub-article {
    background: linear-gradient(135deg, #0f375d 0%, #0b5cad 100%);
}

.wc-breadcrumb p {
    margin: 0 0 10px;
    color: rgba(255, 255, 255, 0.78);
}

.wc-breadcrumb h1 {
    max-width: 920px;
    margin: 0;
    font-size: 42px;
    line-height: 1.15;
}

.wc-hub-layout {
    display: grid;
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
}

.wc-hub-sidebar {
    position: sticky;
    top: 132px;
    padding: 20px;
}

.wc-tag-cloud a {
    padding: 7px 10px;
    background: #edf6ff;
    color: var(--wc-blue);
}

.wc-hub-mini {
    display: block;
    padding: 10px 0;
    border-top: 1px solid var(--wc-line);
    font-weight: 800;
}

.wc-fixed-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.wc-fixed-links a {
    padding: 7px 10px;
    border-radius: 999px;
    background: #edf6ff;
    color: var(--wc-blue);
    font-size: 13px;
    font-weight: 800;
}

.wc-faq-link {
    display: block;
    padding: 10px 0;
    border-top: 1px solid var(--wc-line);
}

.wc-faq-link strong,
.wc-faq-link span {
    display: block;
}

.wc-faq-link strong {
    font-size: 14px;
    line-height: 1.4;
}

.wc-faq-link span {
    margin-top: 4px;
    color: var(--wc-muted);
    font-size: 13px;
}

.wc-list--hub {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wc-pagination {
    grid-column: 1 / -1;
    margin-top: 10px;
}

.wc-article-layout--hub {
    display: grid;
    grid-template-columns: 240px minmax(0, 820px);
    gap: 26px;
    align-items: start;
}

.wc-article-index {
    position: sticky;
    top: 132px;
    padding: 18px;
}

.wc-article__cover {
    width: 100%;
    max-height: 460px;
    object-fit: cover;
    border-radius: var(--wc-radius);
    margin-bottom: 26px;
    box-shadow: var(--wc-shadow);
}

.wc-article__content {
    font-size: 18px;
    color: #1f2a35;
}

.wc-article__content p {
    margin: 0 0 18px;
}

.wc-article__content img {
    border-radius: var(--wc-radius);
    margin: 24px auto;
}

.wc-prev-next {
    display: grid;
    gap: 10px;
    margin: 32px 0;
    padding: 16px;
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    background: var(--wc-panel);
}

.wc-related {
    margin-top: 34px;
}

.wc-related h2 {
    margin: 0 0 16px;
    font-size: 24px;
}

.wc-hub-stream--related,
.wc-faq-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wc-contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
    gap: 24px;
}

.wc-contact-list {
    padding: 0;
    list-style: none;
}

.wc-contact-form {
    display: grid;
    gap: 14px;
    padding: 22px;
}

.wc-contact-form label {
    display: grid;
    gap: 6px;
    font-weight: 800;
}

.wc-contact-form input,
.wc-contact-form textarea {
    width: 100%;
    border: 1px solid var(--wc-line);
    border-radius: var(--wc-radius);
    padding: 12px;
    font: inherit;
}

.wc-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 44px;
    padding: 10px 16px;
    border: 0;
    border-radius: var(--wc-radius);
    background: var(--wc-blue);
    color: #fff;
    font-weight: 900;
}

.wc-cta {
    background: var(--wc-blue);
    color: #fff;
}

.wc-cta__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.wc-footer--hub {
    background: #0a1a28;
    color: rgba(255, 255, 255, 0.78);
}

.wc-footer__grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 0.8fr;
    gap: 28px;
    padding: 54px 0;
}

.wc-footer h2 {
    margin: 0 0 14px;
    color: #fff;
    font-size: 18px;
}

.wc-footer ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.wc-footer li {
    margin: 8px 0;
}

.wc-footer__brand img {
    max-width: 150px;
    margin-bottom: 16px;
}

.wc-footer__bottom {
    padding: 16px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.wc-error {
    padding: 96px 0;
    text-align: center;
}

@media (max-width: 980px) {
    .wc-hubbar {
        grid-template-columns: auto 44px;
    }

    .wc-menu-toggle {
        display: block;
        justify-self: end;
    }

    .wc-nav--hub {
        display: none;
        grid-column: 1 / -1;
        justify-content: start;
        padding-bottom: 14px;
    }

    .wc-nav--hub.is-open {
        display: flex;
    }

    .wc-hub-hero__grid,
    .wc-hub-layout,
    .wc-news-feature,
    .wc-topic-split,
    .wc-article-layout--hub,
    .wc-section__heading,
    .wc-contact-grid,
    .wc-footer__grid {
        grid-template-columns: 1fr;
    }

    .wc-hub-hero__grid {
        grid-template-areas:
            "intro"
            "feed"
            "spotlight";
    }

    .wc-hub-sidebar,
    .wc-article-index {
        position: static;
    }

    .wc-hub-stream,
    .wc-list--hub,
    .wc-topic-cluster,
    .wc-list--topics,
    .wc-home-guide,
    .wc-hub-navgrid,
    .wc-faq-grid,
    .wc-hub-stream--related,
    .wc-faq-grid--compact {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .wc-container {
        width: min(100% - 24px, 1180px);
    }

    .wc-hubbar {
        min-height: 64px;
    }

    .wc-brand--hub img {
        width: 38px;
        height: 38px;
    }

    .wc-brand--hub span {
        max-width: 210px;
    }

    .wc-hub-hero {
        padding: 24px 0;
    }

    .wc-hub-hero__intro h1,
    .wc-breadcrumb h1 {
        font-size: 32px;
    }

    .wc-hub-spotlight {
        grid-template-columns: 1fr;
    }

    .wc-hub-spotlight span,
    .wc-hub-spotlight h2 {
        grid-column: 1;
    }

    .wc-card--hub {
        grid-template-columns: 1fr;
    }

    .wc-section {
        padding: 46px 0;
    }
}