@charset "UTF-8";

:root {
  color-scheme: light;
  --ink: #20242b;
  --muted: #69717d;
  --soft: #f5f7fa;
  --panel: #ffffff;
  --line: #e7ebf0;
  --cyan: #08bfd0;
  --blue: #4375e6;
  --blue-deep: #2659c7;
  --accent: linear-gradient(100deg, #4d72df 0%, #13cbd2 100%);
  --shadow: 0 12px 36px rgba(29, 50, 84, 0.08);
  --radius: 2px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --page: 1320px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf1f7;
  --muted: #a6aebb;
  --soft: #151a22;
  --panel: #10151c;
  --line: #28303b;
  --blue: #6e92f0;
  --blue-deep: #8ba8f4;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--panel);
  color: var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body::selection { background: rgba(8, 191, 208, 0.24); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue-deep); }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }
.portal-shell { width: min(calc(100% - 40px), var(--page)); margin-inline: auto; }

.signal-strip { height: 34px; background: var(--soft); border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.signal-strip__inner { height: 100%; display: flex; align-items: center; gap: 14px; overflow: hidden; }
.signal-strip__date { flex: 0 0 auto; }
.signal-strip__dot { color: #aab1bc; }
.signal-strip__ticker { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

.masthead { display: grid; grid-template-columns: 300px minmax(320px, 560px) 1fr; align-items: center; gap: 28px; min-height: 114px; }
.brand-mark { display: inline-flex; align-items: center; gap: 10px; width: fit-content; color: #2e8ada; font-size: clamp(28px, 3vw, 42px); font-weight: 900; letter-spacing: -0.05em; line-height: 1; }
.brand-mark__glyph { width: 38px; height: 38px; border-radius: 50% 50% 50% 14%; background: var(--accent); transform: rotate(-8deg); position: relative; box-shadow: 0 7px 18px rgba(45, 125, 214, 0.25); }
.brand-mark__glyph::after { content: ""; position: absolute; inset: 10px; border: 4px solid #fff; border-left-color: transparent; border-radius: 50%; }
.brand-mark__text { white-space: nowrap; }

.header-search { display: grid; grid-template-columns: 1fr 58px; background: var(--soft); border: 1px solid transparent; border-radius: 999px; overflow: hidden; transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out); }
.header-search:focus-within { border-color: rgba(8, 191, 208, 0.6); box-shadow: 0 0 0 4px rgba(8, 191, 208, 0.1); }
.header-search input { width: 100%; border: 0; outline: 0; padding: 13px 20px; color: var(--ink); background: transparent; }
.header-search button { border: 0; background: var(--accent); color: #fff; cursor: pointer; font-size: 22px; transition: transform 160ms var(--ease-out), filter 160ms var(--ease-out); }
.header-search button:hover { filter: brightness(1.05); }
.header-search button:active { transform: scale(0.96); }
.masthead__tools { display: flex; justify-content: flex-end; gap: 10px; }
.round-tool { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 50%; background: var(--soft); display: grid; place-items: center; cursor: pointer; transition: transform 160ms var(--ease-out), color 160ms var(--ease-out), border-color 160ms var(--ease-out); }
.round-tool:hover { color: var(--blue); border-color: var(--blue); }
.round-tool:active { transform: scale(0.94); }

.channel-ribbon { position: sticky; top: 0; z-index: 20; background: var(--accent); box-shadow: 0 6px 20px rgba(27, 96, 177, 0.16); }
.channel-ribbon__inner { display: flex; align-items: stretch; min-height: 54px; }
.channel-ribbon a { display: grid; place-items: center; flex: 1 1 auto; min-width: 92px; padding: 0 14px; color: rgba(255, 255, 255, 0.92); font-size: 16px; font-weight: 700; white-space: nowrap; position: relative; transition: background 180ms var(--ease-out), color 180ms var(--ease-out); }
.channel-ribbon a:hover, .channel-ribbon a[aria-current="page"] { color: #fff; background: rgba(23, 62, 142, 0.2); }
.channel-ribbon a[aria-current="page"]::after { content: ""; position: absolute; left: 24%; right: 24%; bottom: 0; height: 3px; background: #fff; }
.nav-toggle { display: none; }
.portal-main { padding-block: 24px 56px; }

.lead-matrix { display: grid; grid-template-columns: minmax(300px, 0.9fr) minmax(420px, 1.3fr) minmax(250px, 0.68fr); align-items: start; gap: 24px; }
.lead-visual, .rail-card, .promo-board, .story-listing, .article-sheet { background: var(--panel); }
.hero-tile { position: relative; min-height: 330px; overflow: hidden; background: #2b2f37; box-shadow: var(--shadow); }
.hero-tile img { width: 100%; height: 330px; object-fit: cover; object-position: center 23%; filter: saturate(0.94) contrast(1.02); transition: transform 420ms var(--ease-out); }
.hero-tile:hover img { transform: scale(1.025); }
.hero-tile::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(8, 18, 27, 0.03) 28%, rgba(8, 18, 27, 0.88) 100%); }
.hero-tile__copy { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 22px; color: #fff; }
.hero-tile__eyebrow { display: inline-block; margin-bottom: 8px; color: #a9f8ff; font-size: 13px; font-weight: 800; letter-spacing: 0.14em; }
.hero-tile h1 { margin: 0; font-size: clamp(23px, 2.15vw, 32px); line-height: 1.28; letter-spacing: -0.02em; }
.hero-tile p { margin: 8px 0 0; color: rgba(255, 255, 255, 0.78); font-size: 14px; }

.module-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; min-height: 54px; border-bottom: 1px solid var(--line); }
.module-heading h2, .module-heading h3 { margin: 0; padding-bottom: 10px; font-size: 20px; line-height: 1.2; position: relative; }
.module-heading h2::after, .module-heading h3::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 58px; height: 3px; background: var(--accent); }
.module-heading a { padding-bottom: 10px; color: var(--muted); font-size: 13px; }
.visual-digest { margin-top: 20px; }
.visual-digest__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding-top: 18px; }
.thumb-story { min-width: 0; }
.thumb-story__image { aspect-ratio: 1.55; overflow: hidden; background: var(--soft); }
.thumb-story__image img { width: 100%; height: 100%; object-fit: cover; object-position: center 24%; transition: transform 300ms var(--ease-out); }
.thumb-story:hover img { transform: scale(1.035); }
.thumb-story h3 { margin: 8px 0 0; font-size: 14px; font-weight: 500; line-height: 1.55; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }

.news-bundles { padding: 0 2px; }
.news-bundle { padding: 0 0 18px; margin-bottom: 14px; border-bottom: 1px dashed var(--line); }
.news-bundle:last-child { margin-bottom: 0; border-bottom: 0; }
.news-bundle__lead { display: block; margin-bottom: 9px; font-size: 19px; font-weight: 800; line-height: 1.45; }
.news-bundle ul { list-style: none; padding: 0; margin: 0; }
.news-bundle li { position: relative; padding: 5px 0 5px 14px; color: #444b55; line-height: 1.45; }
html[data-theme="dark"] .news-bundle li { color: #c7ced8; }
.news-bundle li::before { content: ""; position: absolute; left: 1px; top: 15px; width: 4px; height: 4px; border-radius: 50%; background: #b9c0ca; }

.right-rail { display: grid; gap: 20px; }
.rail-card { border: 1px solid var(--line); padding: 18px; box-shadow: 0 8px 28px rgba(32, 50, 73, 0.04); }
.ranking-list { counter-reset: rank; list-style: none; padding: 14px 0 0; margin: 0; }
.ranking-list li { counter-increment: rank; display: grid; grid-template-columns: 28px 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; line-height: 1.45; }
.ranking-list li:last-child { border-bottom: 0; }
.ranking-list li::before { content: counter(rank); width: 23px; height: 23px; display: grid; place-items: center; background: #dfe4ea; color: #657080; font-weight: 800; font-size: 12px; }
.ranking-list li:nth-child(1)::before { background: #ff4b30; color: #fff; }
.ranking-list li:nth-child(2)::before { background: #f5a623; color: #fff; }
.ranking-list li:nth-child(3)::before { background: #10b7bb; color: #fff; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding-top: 16px; }
.quick-grid a { aspect-ratio: 1; display: grid; place-items: center; text-align: center; padding: 8px 4px; color: #fff; font-size: 13px; line-height: 1.25; transition: transform 160ms var(--ease-out), filter 160ms var(--ease-out); }
.quick-grid a:nth-child(1) { background: #7779e3; }
.quick-grid a:nth-child(2) { background: #379ed8; }
.quick-grid a:nth-child(3) { background: #11b7a7; }
.quick-grid a:nth-child(4) { background: #e5b64c; }
.quick-grid a:nth-child(5) { background: #83b735; }
.quick-grid a:nth-child(6) { background: #ee7a55; }
.quick-grid a:hover { color: #fff; filter: brightness(1.05); transform: translateY(-2px); }
.editor-note { margin-top: 20px; padding: 16px 18px; background: linear-gradient(135deg, rgba(67,117,230,.08), rgba(8,191,208,.08)); color: var(--muted); font-size: 13px; border-left: 3px solid var(--cyan); }

.section-shelf { margin-top: 44px; }
.section-shelf__body { display: grid; grid-template-columns: minmax(300px, 0.95fr) minmax(420px, 1.2fr) minmax(230px, 0.65fr); gap: 24px; padding-top: 20px; }
.feature-card__image { height: 270px; overflow: hidden; background: var(--soft); }
.feature-card__image img { width: 100%; height: 100%; object-fit: cover; object-position: center 24%; transition: transform 360ms var(--ease-out); }
.feature-card:hover img { transform: scale(1.025); }
.feature-card h3 { margin: 13px 0 6px; font-size: 19px; line-height: 1.42; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.compact-stream { display: grid; gap: 15px; }
.compact-item { display: grid; grid-template-columns: 150px 1fr; gap: 15px; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
.compact-item:last-child { border-bottom: 0; }
.compact-item img { width: 150px; height: 94px; object-fit: cover; object-position: center 22%; }
.compact-item h3 { margin: 0 0 7px; font-size: 16px; line-height: 1.42; }
.compact-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.bullet-stream { list-style: none; padding: 0; margin: 0; }
.bullet-stream li { border-bottom: 1px dashed var(--line); }
.bullet-stream a { display: block; padding: 10px 0 10px 13px; position: relative; font-size: 14px; line-height: 1.48; }
.bullet-stream a::before { content: ""; position: absolute; left: 0; top: 19px; width: 5px; height: 5px; background: var(--cyan); }

.page-banner { margin: 0 0 24px; padding: 22px 24px; background: linear-gradient(105deg, rgba(67,117,230,.1), rgba(8,191,208,.08)); border-left: 4px solid var(--cyan); }
.page-banner h1 { margin: 0; font-size: 28px; line-height: 1.3; }
.page-banner p { margin: 7px 0 0; color: var(--muted); }
.content-frame { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: 28px; }
.story-listing { border-top: 2px solid var(--ink); }
.story-row { display: grid; grid-template-columns: 245px 1fr; gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.story-row__image { height: 160px; overflow: hidden; background: var(--soft); }
.story-row__image img { width: 100%; height: 100%; object-fit: cover; object-position: center 25%; transition: transform 300ms var(--ease-out); }
.story-row:hover img { transform: scale(1.03); }
.story-row__meta { display: flex; gap: 10px; color: var(--muted); font-size: 12px; }
.story-row h2 { margin: 5px 0 8px; font-size: 21px; line-height: 1.4; }
.story-row p { margin: 0; color: var(--muted); font-size: 14px; }
.story-row__source { margin-top: 12px; color: var(--blue-deep); font-size: 12px; }
.source-promise { padding: 18px; border: 1px solid var(--line); background: var(--soft); }
.source-promise h3 { margin: 0 0 8px; font-size: 17px; }
.source-promise p { margin: 0; color: var(--muted); font-size: 13px; }
.search-panel { margin-bottom: 24px; }
.search-panel__form { display: grid; grid-template-columns: 1fr auto; border: 1px solid var(--line); }
.search-panel__form input { border: 0; outline: 0; padding: 14px 16px; background: var(--panel); color: var(--ink); }
.search-panel__form button { border: 0; padding: 0 24px; color: #fff; background: var(--accent); cursor: pointer; }
.search-status { margin-top: 12px; color: var(--muted); font-size: 14px; }
.empty-state { padding: 64px 20px; text-align: center; color: var(--muted); border: 1px dashed var(--line); }

.article-layout { display: grid; grid-template-columns: minmax(0, 900px) 300px; justify-content: center; gap: 34px; }
.article-sheet { min-width: 0; }
.breadcrumbs { color: var(--muted); font-size: 13px; margin-bottom: 16px; }
.article-header { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.article-header__tag { color: var(--cyan); font-weight: 800; font-size: 13px; letter-spacing: .08em; }
.article-header h1 { margin: 9px 0 12px; font-size: clamp(30px, 4vw, 46px); line-height: 1.23; letter-spacing: -0.035em; }
.article-header__deck { margin: 0 0 14px; color: var(--muted); font-size: 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--muted); font-size: 13px; }
.article-meta a { color: var(--blue-deep); }
.article-hero { margin: 28px 0 12px; }
.article-hero img { width: 100%; max-height: 640px; object-fit: cover; object-position: center 20%; }
.article-hero figcaption { padding: 9px 0; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--line); }
.article-hero figcaption a { color: var(--blue-deep); }
.article-body { max-width: 790px; margin-inline: auto; padding-top: 12px; }
.article-body p { margin: 0 0 22px; font-family: "Noto Serif SC", "Songti SC", serif; font-size: 18px; line-height: 1.95; }
.fact-box { margin: 26px 0; padding: 20px 24px; background: var(--soft); border-left: 4px solid var(--blue); }
.fact-box h2 { margin: 0 0 10px; font-size: 18px; }
.fact-box ul { margin: 0; padding-left: 20px; }
.fact-box li { margin: 6px 0; }
.source-box { margin-top: 32px; padding: 22px; border: 1px solid var(--line); }
.source-box h2 { margin: 0 0 10px; font-size: 19px; }
.source-box ul { margin: 0; padding-left: 20px; }
.source-box a { color: var(--blue-deep); text-decoration: underline; text-underline-offset: 3px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.article-tags a { padding: 4px 10px; background: var(--soft); color: var(--muted); font-size: 12px; }
.related-list { list-style: none; padding: 0; margin: 14px 0 0; }
.related-list li { padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }

.site-footer { margin-top: 32px; padding: 34px 0 44px; background: #171c24; color: #9ca6b4; font-size: 13px; }
.site-footer__grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.site-footer strong { display: block; margin-bottom: 6px; color: #fff; font-size: 18px; }
.site-footer p { margin: 4px 0; }
.site-footer a { color: #cbd2dc; }
.site-footer a:hover { color: #fff; }
.back-top { position: fixed; right: 22px; bottom: 22px; width: 42px; height: 42px; border: 0; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--accent); box-shadow: var(--shadow); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out); }
.back-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:active { transform: scale(0.95); }

@media (max-width: 1120px) {
  :root { --page: 980px; }
  .masthead { grid-template-columns: 250px 1fr auto; }
  .lead-matrix { grid-template-columns: minmax(300px, .9fr) minmax(420px, 1.2fr); }
  .right-rail { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-shelf__body { grid-template-columns: minmax(300px, .9fr) minmax(420px, 1.2fr); }
  .section-shelf__body > .bullet-stream { grid-column: 1 / -1; columns: 2; column-gap: 28px; }
  .article-layout { grid-template-columns: minmax(0, 1fr) 260px; }
}
@media (max-width: 820px) {
  .portal-shell { width: min(calc(100% - 28px), var(--page)); }
  .signal-strip__dot { display: none; }
  .masthead { min-height: 94px; grid-template-columns: 1fr auto; gap: 16px; }
  .brand-mark { font-size: 30px; }
  .brand-mark__glyph { width: 32px; height: 32px; }
  .header-search { grid-column: 1 / -1; grid-row: 2; margin-bottom: 18px; }
  .masthead__tools { grid-column: 2; grid-row: 1; }
  .nav-toggle { display: grid; }
  .channel-ribbon__inner { overflow-x: auto; scrollbar-width: none; }
  .channel-ribbon__inner::-webkit-scrollbar { display: none; }
  .channel-ribbon a { flex: 0 0 auto; min-width: 98px; }
  .lead-matrix, .section-shelf__body, .content-frame, .article-layout { grid-template-columns: 1fr; }
  .right-rail { grid-column: auto; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-shelf__body > .bullet-stream { grid-column: auto; columns: 1; }
  .content-frame > aside, .article-layout > aside { order: 2; }
  .article-body { max-width: 100%; }
}
@media (max-width: 560px) {
  body { font-size: 15px; }
  .portal-shell { width: min(calc(100% - 22px), var(--page)); }
  .signal-strip { height: 31px; font-size: 12px; }
  .signal-strip__date { display: none; }
  .masthead { min-height: 80px; }
  .brand-mark { font-size: 25px; }
  .brand-mark__glyph { width: 29px; height: 29px; }
  .round-tool { width: 37px; height: 37px; }
  .masthead__tools .profile-tool { display: none; }
  .channel-ribbon__inner { min-height: 48px; }
  .channel-ribbon a { min-width: 84px; padding-inline: 11px; font-size: 14px; }
  .portal-main { padding-top: 15px; }
  .hero-tile, .hero-tile img { min-height: 310px; height: 310px; }
  .hero-tile__copy { left: 18px; right: 18px; bottom: 18px; }
  .hero-tile h1 { font-size: 24px; }
  .visual-digest__grid { gap: 12px; }
  .thumb-story h3 { font-size: 13px; }
  .news-bundle__lead { font-size: 18px; }
  .news-bundle li { font-size: 14px; }
  .right-rail { grid-template-columns: 1fr; }
  .section-shelf { margin-top: 34px; }
  .feature-card__image { height: 240px; }
  .compact-item { grid-template-columns: 118px 1fr; gap: 12px; }
  .compact-item img { width: 118px; height: 84px; }
  .compact-item p { display: none; }
  .story-row { grid-template-columns: 112px 1fr; gap: 13px; padding: 16px 0; }
  .story-row__image { height: 92px; }
  .story-row h2 { margin: 3px 0 0; font-size: 16px; }
  .story-row p, .story-row__source { display: none; }
  .page-banner { padding: 18px; }
  .page-banner h1 { font-size: 24px; }
  .article-header h1 { font-size: 30px; }
  .article-header__deck { font-size: 16px; }
  .article-body p { font-size: 17px; line-height: 1.9; }
  .article-hero { margin-inline: -11px; }
  .article-hero figcaption { padding-inline: 11px; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .back-top { right: 14px; bottom: 14px; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-tile, .news-bundle, .rail-card, .section-shelf { animation: rise-in 420ms var(--ease-out) both; }
  .news-bundle:nth-child(2) { animation-delay: 45ms; }
  .news-bundle:nth-child(3) { animation-delay: 90ms; }
  @keyframes rise-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
}