:root {
    --nu-blue: #2879f5;
    --nu-blue-dark: #1457d0;
    --nu-navy: #102956;
    --nu-ink: #17243c;
    --nu-muted: #718097;
    --nu-line: #dce7f7;
    --nu-soft: #f3f7fe;
    --nu-orange: #ff9b2c;
    --nu-green: #2bc89b;
    --nu-shadow: 0 22px 64px rgba(22, 70, 142, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.wx-news-updates { min-width: 320px; overflow-x: clip; color: var(--nu-ink); background: #fff; font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; }
.wx-news-updates a { text-decoration: none; }
.nu-container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.nu-nav-toggle { display: none; }

/* Navigation */
.wx-news-updates #nav { position: sticky; top: 0; z-index: 1100; }
.wx-news-updates #nav .pull-right > a.item[href="/news/"] { position: relative; color: #fff; }
.wx-news-updates #nav .pull-right > a.item[href="/news/"]::after { content: ""; position: absolute; right: 0; bottom: 16px; left: 0; height: 3px; border-radius: 3px; background: #fff; }
.wx-news-updates #nav.nu-nav-scrolled { background: rgba(255,255,255,.97) !important; box-shadow: 0 10px 32px rgba(19,54,111,.1); backdrop-filter: blur(14px); }
.wx-news-updates #nav.nu-nav-scrolled .pull-left img { filter: none; }
.wx-news-updates #nav.nu-nav-scrolled .pull-right > a.item { color: #26364f !important; }
.wx-news-updates #nav.nu-nav-scrolled .pull-right > a.item[href="/news/"] { color: var(--nu-blue) !important; }
.wx-news-updates #nav.nu-nav-scrolled .pull-right > a.item[href="/news/"]::after { background: var(--nu-blue); }
.wx-news-updates #nav.nu-nav-scrolled .pull-right .demoCenter.download { border-color: #c8dcfa; background: #edf5ff; }
.wx-news-updates #nav.nu-nav-scrolled .pull-right .demoCenter.download a { color: var(--nu-blue) !important; }

/* Hero */
.nu-hero { position: relative; overflow: hidden; padding: 72px 0 96px; color: #fff; background: linear-gradient(116deg, #0d2958 0%, #1459d4 52%, #2c88fa 100%); }
.nu-hero::before { content: ""; position: absolute; width: 560px; height: 560px; top: -330px; right: -30px; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; box-shadow: 0 0 0 80px rgba(255,255,255,.025), 0 0 0 160px rgba(255,255,255,.018); }
.nu-hero::after { content: "CHANGELOG"; position: absolute; bottom: -46px; left: 50%; color: rgba(255,255,255,.035); font-size: clamp(88px, 12vw, 170px); font-weight: 900; letter-spacing: -.055em; transform: translateX(-50%); white-space: nowrap; }
.nu-hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.04fr .96fr; gap: 72px; align-items: center; }
.nu-eyebrow { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 20px; color: #a8dcff; font-size: 13px; font-weight: 800; letter-spacing: .2em; }
.nu-eyebrow::before { content: ""; width: 32px; height: 3px; border-radius: 3px; background: var(--nu-orange); }
.nu-hero h1 { margin: 0 0 20px; color: #fff; font-size: clamp(44px, 4.7vw, 66px); line-height: 1.12; letter-spacing: -.045em; font-weight: 800; }
.nu-hero h1 span { display: block; color: #d8edff; }
.nu-hero-copy > p { max-width: 610px; margin: 0; color: rgba(255,255,255,.74); font-size: 17px; line-height: 1.85; }
.nu-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.nu-btn { display: inline-flex; min-width: 144px; height: 48px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid rgba(255,255,255,.35); border-radius: 10px; color: #fff; font-size: 15px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.nu-btn:hover { transform: translateY(-2px); }
.nu-btn--primary { border-color: var(--nu-orange); background: var(--nu-orange); box-shadow: 0 14px 30px rgba(189,98,0,.22); }
.nu-btn--ghost { background: rgba(255,255,255,.07); }

.nu-release { position: relative; padding: 30px; border: 1px solid rgba(255,255,255,.18); border-radius: 26px; background: rgba(255,255,255,.09); box-shadow: 0 28px 65px rgba(4,34,91,.25); backdrop-filter: blur(14px); }
.nu-release-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.nu-release-top span { display: inline-flex; align-items: center; gap: 9px; color: #d2ecff; font-size: 12px; font-weight: 800; letter-spacing: .14em; }
.nu-release-top span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #5ce1bb; box-shadow: 0 0 0 6px rgba(92,225,187,.12); }
.nu-release-top time { color: rgba(255,255,255,.6); font-size: 13px; }
.nu-release h2 { margin: 0 0 12px; color: #fff; font-size: 27px; line-height: 1.45; }
.nu-release > p { margin: 0; color: rgba(255,255,255,.68); font-size: 14px; line-height: 1.8; }
.nu-release-tags { display: flex; flex-wrap: wrap; gap: 9px; margin: 24px 0 26px; }
.nu-release-tags span { padding: 8px 12px; border: 1px solid rgba(255,255,255,.15); border-radius: 999px; color: rgba(255,255,255,.82); background: rgba(255,255,255,.07); font-size: 12px; }
.nu-release-link { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.14); color: #fff; font-size: 14px; font-weight: 700; }
.nu-release-link b { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 50%; background: rgba(255,255,255,.1); font-size: 18px; transition: transform .2s ease; }
.nu-release-link:hover b { transform: translateX(4px); }

/* Confidence strip */
.nu-proof-wrap { position: relative; z-index: 4; margin-top: -28px; }
.nu-proof { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--nu-line); border-radius: 20px; background: #fff; box-shadow: var(--nu-shadow); }
.nu-proof-item { min-height: 104px; padding: 24px 26px; }
.nu-proof-item + .nu-proof-item { border-left: 1px solid var(--nu-line); }
.nu-proof-item b { display: block; margin-bottom: 8px; color: var(--nu-blue); font-size: 12px; letter-spacing: .14em; }
.nu-proof-item strong { display: block; color: var(--nu-navy); font-size: 18px; }
.nu-proof-item span { display: block; margin-top: 5px; color: var(--nu-muted); font-size: 12px; }

/* Content */
.nu-section { padding: 92px 0; background: linear-gradient(180deg, #fff 0, var(--nu-soft) 100%); }
.nu-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 34px; }
.nu-section-title span { display: block; margin-bottom: 10px; color: var(--nu-blue); font-size: 13px; font-weight: 800; letter-spacing: .2em; }
.nu-section-title h2 { margin: 0; color: var(--nu-ink); font-size: clamp(31px, 3vw, 43px); line-height: 1.3; }
.nu-section-head > p { max-width: 510px; margin: 0; color: var(--nu-muted); font-size: 15px; line-height: 1.8; text-align: right; }

.nu-latest-feature { display: grid; grid-template-columns: .82fr 1.18fr; overflow: hidden; margin-bottom: 28px; border: 1px solid var(--nu-line); border-radius: 26px; background: #fff; box-shadow: var(--nu-shadow); }
.nu-latest-image { position: relative; min-height: 330px; overflow: hidden; background: #0e2751; }
.nu-latest-image img { width: 100%; height: 100%; object-fit: cover; }
.nu-latest-image::after { content: "LATEST"; position: absolute; right: 20px; bottom: 18px; padding: 8px 12px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; color: #fff; background: rgba(8,29,63,.66); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.nu-latest-content { display: flex; flex-direction: column; justify-content: center; padding: 42px 46px; }
.nu-latest-meta { display: flex; align-items: center; gap: 10px; color: var(--nu-blue); font-size: 13px; font-weight: 800; }
.nu-latest-meta::before { content: ""; width: 24px; height: 2px; background: var(--nu-orange); }
.nu-latest-content h3 { margin: 16px 0 13px; color: var(--nu-navy); font-size: 29px; line-height: 1.45; }
.nu-latest-content p { margin: 0; color: var(--nu-muted); font-size: 15px; line-height: 1.85; }
.nu-latest-content > a { display: inline-flex; align-items: center; gap: 10px; align-self: flex-start; margin-top: 22px; color: var(--nu-blue); font-size: 14px; font-weight: 800; }
.nu-latest-content > a::after { content: "→"; font-size: 18px; transition: transform .2s ease; }
.nu-latest-content > a:hover::after { transform: translateX(4px); }

.nu-main-grid { display: grid; grid-template-columns: 255px minmax(0, 1fr); gap: 26px; align-items: start; }
.nu-sidebar { position: sticky; top: 108px; overflow: hidden; border: 1px solid var(--nu-line); border-radius: 22px; background: #fff; box-shadow: 0 16px 44px rgba(24,69,137,.07); }
.nu-side-head { padding: 24px; color: #fff; background: linear-gradient(125deg, #1458d1, #2b83f7); }
.nu-side-head span { display: block; margin-bottom: 7px; color: #bfe3ff; font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.nu-side-head h3 { margin: 0; color: #fff; font-size: 22px; }
.nu-year-filter { display: grid; gap: 6px; padding: 14px; }
.nu-filter { display: flex; width: 100%; min-height: 48px; align-items: center; justify-content: space-between; padding: 0 15px; border: 0; border-radius: 10px; color: #54647c; background: transparent; font-family: inherit; font-size: 14px; cursor: pointer; transition: color .2s ease, background .2s ease; }
.nu-filter::after { content: "→"; color: #a6b5c9; }
.nu-filter:hover { color: var(--nu-blue); background: #f3f7fe; }
.nu-filter.is-active { color: var(--nu-blue); background: #eaf3ff; font-weight: 800; }
.nu-filter.is-active::after { color: var(--nu-blue); }
.nu-side-note { margin: 0 14px 14px; padding: 18px; border-radius: 14px; background: var(--nu-soft); }
.nu-side-note strong { display: block; color: var(--nu-navy); font-size: 14px; }
.nu-side-note p { margin: 8px 0 0; color: var(--nu-muted); font-size: 12px; line-height: 1.7; }
.nu-filter-result { margin: 0; padding: 0 24px 22px; color: #9aa8ba; font-size: 12px; }

.nu-timeline { position: relative; display: grid; gap: 14px; }
.nu-timeline::before { content: ""; position: absolute; top: 34px; bottom: 34px; left: 22px; width: 2px; background: #d9e6f8; }
.nu-update-item { position: relative; display: grid; grid-template-columns: 116px minmax(0, 1fr) auto; gap: 24px; align-items: center; min-height: 146px; padding: 25px 27px 25px 64px; border: 1px solid var(--nu-line); border-radius: 20px; color: var(--nu-ink); background: #fff; box-shadow: 0 12px 35px rgba(24,69,137,.055); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.nu-update-item::before { content: ""; position: absolute; z-index: 2; top: 50%; left: 15px; width: 16px; height: 16px; border: 4px solid #dceaff; border-radius: 50%; background: var(--nu-blue); transform: translateY(-50%); }
.nu-update-item:hover { border-color: #aecdf9; box-shadow: 0 18px 42px rgba(24,82,170,.11); transform: translateY(-2px); }
.nu-update-item[hidden] { display: none; }
.nu-update-date { color: var(--nu-blue); font-size: 13px; font-weight: 800; letter-spacing: .03em; }
.nu-update-body { min-width: 0; }
.nu-update-title { display: -webkit-box; overflow: hidden; margin: 0 0 9px; color: var(--nu-navy); font-size: 19px; line-height: 1.5; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.nu-update-desc { display: -webkit-box; overflow: hidden; margin: 0; color: var(--nu-muted); font-size: 13px; line-height: 1.7; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.nu-update-arrow { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 50%; color: var(--nu-blue); background: #edf5ff; font-size: 19px; transition: color .2s ease, background .2s ease, transform .2s ease; }
.nu-update-item:hover .nu-update-arrow { color: #fff; background: var(--nu-blue); transform: translateX(3px); }
.nu-empty { display: none; padding: 55px 24px; border: 1px dashed #c9d9ef; border-radius: 18px; color: var(--nu-muted); background: #fff; text-align: center; }
.nu-empty.is-visible { display: block; }

.nu-pagination { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 32px; }
.nu-pagination a, .nu-pagination span { display: inline-flex; min-width: 42px; height: 42px; align-items: center; justify-content: center; padding: 0 14px; border: 1px solid var(--nu-line); border-radius: 10px; color: #66758a; background: #fff; font-size: 13px; }
.nu-pagination a:hover, .nu-pagination .active, .nu-pagination .cur { border-color: var(--nu-blue); color: #fff; background: var(--nu-blue); }

/* CTA */
.nu-cta { padding: 86px 0; }
.nu-cta-panel { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 38px; padding: 48px 54px; border-radius: 26px; color: #fff; background: linear-gradient(115deg, #102a59, #155ed7 62%, #2a88f7); box-shadow: 0 26px 65px rgba(21,84,190,.2); }
.nu-cta-panel::after { content: ""; position: absolute; width: 310px; height: 310px; right: -125px; bottom: -215px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 52px rgba(255,255,255,.035), 0 0 0 104px rgba(255,255,255,.02); }
.nu-cta-panel > div { position: relative; z-index: 2; }
.nu-cta-panel span { color: #9ddfff; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.nu-cta-panel h2 { margin: 12px 0 9px; color: #fff; font-size: 31px; }
.nu-cta-panel p { margin: 0; color: rgba(255,255,255,.7); font-size: 15px; }
.nu-cta-panel .nu-actions { position: relative; z-index: 2; flex: 0 0 auto; margin-top: 0; }
.nu-footer { padding: 24px 0; color: #8592a7; background: #0c1f43; font-size: 14px; }
.nu-footer .nu-container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nu-footer nav { display: flex; gap: 22px; }
.nu-footer a { color: #c2cada; }

@media (max-width: 1000px) {
    .nu-hero-grid { grid-template-columns: 1fr 420px; gap: 42px; }
    .nu-hero h1 { font-size: 48px; }
    .nu-latest-feature { grid-template-columns: 1fr 1.25fr; }
}

@media (max-width: 980px) {
    .nu-container { width: min(100% - 32px, 720px); }
    .wx-news-updates #nav { height: 76px; padding: 0 16px; }
    .wx-news-updates #nav .pull-left { position: relative; z-index: 3; }
    .wx-news-updates #nav .pull-left img { width: 164px; }
    .nu-nav-toggle { position: relative; z-index: 3; display: block; float: right; width: 44px; height: 44px; margin-top: 16px; border: 0; border-radius: 10px; background: rgba(255,255,255,.13); cursor: pointer; }
    .nu-nav-toggle::before, .nu-nav-toggle::after { content: ""; position: absolute; left: 12px; width: 20px; height: 2px; background: #fff; transition: transform .2s ease, top .2s ease; }
    .nu-nav-toggle::before { top: 16px; box-shadow: 0 6px 0 #fff; }
    .nu-nav-toggle::after { top: 28px; }
    .nu-nav-toggle[aria-expanded="true"]::before { top: 21px; transform: rotate(45deg); box-shadow: none; }
    .nu-nav-toggle[aria-expanded="true"]::after { top: 21px; transform: rotate(-45deg); }
    .wx-news-updates #nav.nu-nav-scrolled .nu-nav-toggle { background: #edf4ff; }
    .wx-news-updates #nav.nu-nav-scrolled .nu-nav-toggle::before, .wx-news-updates #nav.nu-nav-scrolled .nu-nav-toggle::after { background: var(--nu-blue); box-shadow: none; }
    .wx-news-updates #nav .pull-right { position: fixed; top: 76px; right: 0; left: 0; display: none; max-height: calc(100vh - 76px); overflow: auto; padding: 14px 18px 24px; background: #fff; box-shadow: 0 20px 45px rgba(18,49,99,.16); }
    .wx-news-updates #nav.nu-menu-open .pull-right { display: block; }
    .wx-news-updates #nav .pull-right > a.item, .wx-news-updates #nav.nu-nav-scrolled .pull-right > a.item { display: block; width: 100%; height: auto; min-height: 48px; padding: 14px 6px; border-bottom: 1px solid #edf2f9; color: #26364f !important; line-height: 20px; }
    .wx-news-updates #nav .pull-right > a.item[href="/news/"] { color: var(--nu-blue) !important; }
    .wx-news-updates #nav .pull-right > a.item::after { display: none; }
    .wx-news-updates #nav .demoCenter { display: inline-flex; margin: 16px 8px 0 0 !important; }
    .wx-news-updates #nav .wx-study-list { position: static; width: 100%; margin-top: 10px; box-shadow: none; }
    .wx-news-updates #nav:not(.nu-nav-scrolled) { background: #1b60d5; }
    .nu-hero-grid { grid-template-columns: 1fr; }
    .nu-release { max-width: 650px; }
    .nu-proof { grid-template-columns: repeat(2, 1fr); }
    .nu-proof-item:nth-child(3) { border-left: 0; }
    .nu-proof-item:nth-child(n+3) { border-top: 1px solid var(--nu-line); }
    .nu-latest-feature { grid-template-columns: 1fr; }
    .nu-latest-image { min-height: 280px; }
    .nu-main-grid { grid-template-columns: 1fr; }
    .nu-sidebar { position: static; }
    .nu-year-filter { display: flex; overflow-x: auto; }
    .nu-filter { flex: 0 0 auto; width: auto; min-width: 104px; justify-content: center; }
    .nu-filter::after { display: none; }
    .nu-side-note { display: none; }
    .nu-filter-result { padding: 4px 22px 20px; }
    .nu-cta-panel { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
    .nu-container { width: calc(100% - 28px); }
    .nu-hero { padding: 56px 0 74px; }
    .nu-hero h1 { font-size: 38px; }
    .nu-hero-copy > p { font-size: 15px; }
    .nu-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .nu-btn { min-width: 0; padding: 0 12px; }
    .nu-release { padding: 23px; border-radius: 20px; }
    .nu-release h2 { font-size: 22px; }
    .nu-proof-item { min-height: 96px; padding: 20px; }
    .nu-proof-item strong { font-size: 16px; }
    .nu-section { padding: 68px 0; }
    .nu-section-head { align-items: flex-start; flex-direction: column; margin-bottom: 28px; }
    .nu-section-head > p { text-align: left; }
    .nu-latest-feature { border-radius: 20px; }
    .nu-latest-image { min-height: 210px; }
    .nu-latest-content { padding: 28px 24px; }
    .nu-latest-content h3 { font-size: 23px; }
    .nu-update-item { grid-template-columns: 1fr auto; gap: 15px; min-height: 0; padding: 22px 18px 22px 48px; border-radius: 16px; }
    .nu-update-item::before { left: 11px; }
    .nu-timeline::before { left: 18px; }
    .nu-update-date { grid-column: 1 / -1; }
    .nu-update-title { font-size: 17px; }
    .nu-update-desc { -webkit-line-clamp: 3; }
    .nu-update-arrow { width: 36px; height: 36px; }
    .nu-cta { padding: 66px 0; }
    .nu-cta-panel { padding: 36px 25px; border-radius: 20px; }
    .nu-cta-panel h2 { font-size: 26px; }
    .nu-cta-panel .nu-actions { width: 100%; }
    .nu-footer .nu-container { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .nu-btn, .nu-update-item, .nu-update-arrow, .nu-release-link b { transition: none; }
}