/*
Theme Name: 新闻视界
Description: Z-BlogPHP 响应式新闻资讯主题
Version: 1.0.0
*/

:root {
  --color-primary: #b42318;
  --color-primary-dark: #8f1c13;
  --color-ink: #171717;
  --color-muted: #6b6b6b;
  --color-border: #dedbd5;
  --color-surface: #ffffff;
  --color-canvas: #f5f3ee;
  --color-soft: #ebe8e1;
  --color-footer: #161a1d;
  --font-serif: "Noto Serif SC", "Songti SC", SimSun, serif;
  --font-sans: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --container: 1200px;
  --shadow: 0 12px 32px rgba(21, 20, 18, 0.08);
}

[data-theme="dark"] {
  --color-ink: #eeeae3;
  --color-muted: #aaa59c;
  --color-border: #3a3936;
  --color-surface: #20201e;
  --color-canvas: #151513;
  --color-soft: #292825;
  --color-footer: #0b0c0d;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-canvas);
  font: 16px/1.75 var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-primary); }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
.site-container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link { position: fixed; left: 16px; top: -100px; z-index: 999; padding: 10px 16px; color: #fff; background: var(--color-primary); }
.skip-link:focus { top: 12px; }

.utility-bar { color: #d8d7d3; background: #161a1d; font-size: 12px; letter-spacing: .03em; }
.utility-inner { display: flex; align-items: center; min-height: 34px; gap: 20px; }
.utility-slogan { color: #9f9f9b; }
.utility-actions { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.theme-toggle { width: 28px; height: 28px; padding: 0; color: #fff; background: transparent; border: 0; border-radius: 50%; }
.theme-toggle:hover { background: rgba(255,255,255,.12); }
.brand-row { display: flex; align-items: center; min-height: 112px; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; color: #fff; background: var(--color-primary); font: 800 29px/1 Georgia, serif; transform: skew(-7deg); }
.brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-copy strong { font: 900 28px/1.2 var(--font-serif); letter-spacing: .08em; }
.brand-copy small { margin-top: 5px; color: var(--color-muted); font-size: 10px; letter-spacing: .17em; text-transform: uppercase; }
.site-search { display: flex; width: min(440px, 48vw); height: 44px; margin-left: auto; border: 1px solid var(--color-border); background: var(--color-surface); }
.site-search:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(180,35,24,.1); }
.site-search input { min-width: 0; flex: 1; padding: 0 16px; color: var(--color-ink); background: transparent; border: 0; outline: 0; }
.site-search button { display: flex; align-items: center; gap: 6px; padding: 0 18px; color: #fff; background: var(--color-primary); border: 0; }
.site-search button:hover { background: var(--color-primary-dark); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 10px; background: transparent; border: 1px solid var(--color-border); }
.menu-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--color-ink); }
.main-navigation { color: #fff; background: var(--color-primary); border-bottom: 4px solid var(--color-primary-dark); }
.nav-scroll, .main-navigation ul { display: flex; align-items: stretch; }
.main-navigation li { display: flex; }
.main-navigation a { display: flex; align-items: center; min-height: 48px; padding: 0 22px; font-weight: 700; }
.main-navigation a:hover, .main-navigation li.on a, .main-navigation .home-link { color: #fff; background: rgba(0,0,0,.14); }

.site-main { padding-block: 36px 72px; }
.lead-section { display: grid; grid-template-columns: minmax(0, 1.72fr) minmax(300px, .82fr); gap: 22px; margin-bottom: 46px; }
.lead-story, .lead-media { min-height: 470px; }
.lead-story { position: relative; overflow: hidden; background: #181818; box-shadow: var(--shadow); }
.lead-media { position: relative; display: block; color: #fff; }
.lead-media > img { position: absolute; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.lead-media:hover > img { transform: scale(1.035); }
.lead-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 22%, rgba(0,0,0,.84) 100%); }
.lead-content { position: absolute; inset: auto 0 0; z-index: 1; padding: 44px; }
.eyebrow, .category-label, .heading-kicker { color: var(--color-primary); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.lead-content .eyebrow { display: inline-block; margin-bottom: 14px; padding: 5px 9px; color: #fff; background: var(--color-primary); }
.lead-content h1 { max-width: 800px; margin: 0; font: 900 clamp(30px, 4vw, 48px)/1.25 var(--font-serif); letter-spacing: .01em; }
.lead-content p { max-width: 700px; margin: 14px 0 0; color: rgba(255,255,255,.8); line-height: 1.65; }
.story-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 16px; color: var(--color-muted); font-size: 13px; }
.lead-content .story-meta { color: rgba(255,255,255,.68); }
.secondary-stories { display: grid; grid-template-rows: repeat(2, 1fr); gap: 22px; }
.secondary-story { position: relative; min-height: 224px; overflow: hidden; color: #fff; background: #171717; }
.secondary-media, .secondary-media::after { position: absolute; inset: 0; }
.secondary-media::after { content: ""; background: linear-gradient(180deg, transparent 10%, rgba(0,0,0,.83) 100%); }
.secondary-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.secondary-story:hover img { transform: scale(1.04); }
.secondary-content { position: absolute; inset: auto 0 0; z-index: 1; padding: 23px; }
.secondary-content .category-label { color: #f0a39c; }
.secondary-content h2 { margin: 6px 0 10px; font: 800 21px/1.45 var(--font-serif); }
.secondary-content time { color: rgba(255,255,255,.65); font-size: 12px; }

.content-layout, .article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 48px; align-items: start; }
.section-heading { display: flex; align-items: end; gap: 20px; margin-bottom: 24px; }
.section-heading h1, .section-heading h2 { margin: 2px 0 0; font: 900 30px/1.25 var(--font-serif); }
.heading-line { height: 1px; flex: 1; margin-bottom: 7px; background: var(--color-border); }
.article-list { border-top: 3px solid var(--color-ink); }
.news-card { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 25px; padding: 26px 0; border-bottom: 1px solid var(--color-border); }
.news-card-media { overflow: hidden; aspect-ratio: 16/10; background: var(--color-soft); }
.news-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.news-card:hover .news-card-media img { transform: scale(1.035); }
.news-card h3 { margin: 7px 0 9px; font: 800 23px/1.42 var(--font-serif); }
.news-card p { display: -webkit-box; overflow: hidden; margin: 0; color: var(--color-muted); line-height: 1.72; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.home-waterfall-layout { display: block; }
.home-waterfall .section-heading { margin-bottom: 28px; }
.waterfall-grid { column-count: 3; column-gap: 24px; border-top: 0; }
.waterfall-grid .news-card {
  display: inline-block;
  width: 100%;
  margin: 0 0 24px;
  padding: 0;
  overflow: hidden;
  background: var(--color-surface);
  border: 0;
  box-shadow: var(--shadow);
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
}
.waterfall-grid .news-card-media { display: block; aspect-ratio: auto; }
.waterfall-grid .news-card-media img { width: 100%; height: auto; min-height: 190px; max-height: 420px; object-fit: cover; }
.waterfall-grid .news-card-body { padding: 22px; }
.waterfall-grid .news-card h3 { margin: 7px 0 10px; font-size: 22px; }
.waterfall-grid .news-card p { -webkit-line-clamp: 3; }
.waterfall-grid .news-card-featured { border-top: 4px solid var(--color-primary); }
.waterfall-grid + .pagebar { margin-top: 16px; }
.waterfall-pagination[hidden] { display: none; }
.waterfall-loader { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 72px; margin: 18px 0 0; color: var(--color-muted); border-top: 1px solid var(--color-border); font-size: 14px; text-align: center; }
.waterfall-loader.has-error { color: var(--color-primary); cursor: pointer; }
.loader-spinner { display: none; width: 19px; height: 19px; border: 2px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: waterfall-spin .7s linear infinite; }
.waterfall-loader.is-loading .loader-spinner { display: block; }
.waterfall-loader.is-finished .loader-spinner { display: none; }
.waterfall-loading-active .waterfall-footer { display: none; }
@keyframes waterfall-spin { to { transform: rotate(360deg); } }
.category-label { display: inline-block; }
.label-row { display: flex; align-items: center; gap: 10px; }
.top-label { padding: 2px 7px; color: #fff; background: var(--color-primary); font-size: 11px; font-weight: 700; }
.sidebar { position: sticky; top: 22px; }
.widget { margin-bottom: 28px; padding: 24px; background: var(--color-surface); border-top: 3px solid var(--color-ink); box-shadow: var(--shadow); }
.widget-title { margin: 0 0 16px; font: 800 20px/1.4 var(--font-serif); }
.widget-content { color: var(--color-muted); font-size: 14px; }
.widget-content li { position: relative; padding: 11px 0 11px 15px; border-bottom: 1px solid var(--color-border); }
.widget-content li:last-child { border-bottom: 0; }
.widget-content li::before { content: ""; position: absolute; left: 0; top: 22px; width: 5px; height: 5px; background: var(--color-primary); }
.widget-content a { color: var(--color-ink); }
.widget-content a:hover { color: var(--color-primary); }
.widget-content img { height: auto; }
.pagebar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.pagebar a, .pagebar span { display: grid; place-items: center; min-width: 40px; height: 40px; padding: 0 11px; background: var(--color-surface); border: 1px solid var(--color-border); }
.pagebar a:hover, .pagebar .is-current { color: #fff; background: var(--color-primary); border-color: var(--color-primary); }

.article-layout { padding-top: 46px; }
.article-detail { padding: clamp(24px, 4vw, 52px); background: var(--color-surface); box-shadow: var(--shadow); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; color: var(--color-muted); font-size: 13px; }
.article-header { padding-bottom: 28px; border-bottom: 1px solid var(--color-border); }
.article-header h1 { margin: 10px 0 14px; font: 900 20px/1.3 var(--font-serif); letter-spacing: .01em; }
.article-deck { margin: 0; color: var(--color-muted); font: 18px/1.8 var(--font-serif); }
.article-byline { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 22px; color: var(--color-muted); font-size: 13px; }
.article-hero { margin: 34px 0; }
.article-hero img { width: 100%; }
.article-body { padding-top: 28px; font: 18px/2 var(--font-serif); word-break: break-word; }
.article-hero + .article-body { padding-top: 0; }
.article-body h2, .article-body h3, .article-body h4 { margin: 1.8em 0 .7em; line-height: 1.45; }
.article-body h2 { padding-left: 14px; border-left: 4px solid var(--color-primary); font-size: 27px; }
.article-body p { margin: 1.25em 0; }
.article-body a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote { margin: 2em 0; padding: 20px 24px; color: var(--color-muted); background: var(--color-soft); border-left: 4px solid var(--color-primary); }
.article-body table { width: 100%; border-collapse: collapse; }
.article-body th, .article-body td { padding: 10px; border: 1px solid var(--color-border); }
.article-body pre { overflow: auto; padding: 20px; color: #e9e9e9; background: #1d1f21; }
.article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--color-border); }
.article-tags a { padding: 5px 11px; color: var(--color-muted); background: var(--color-soft); border-radius: 2px; font-size: 13px; }

.comments-area { margin-top: 32px; padding: clamp(24px, 4vw, 42px); background: var(--color-surface); box-shadow: var(--shadow); }
.comment-list { border-top: 1px solid var(--color-border); }
.comment-item { display: flex; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--color-border); }
.comment-avatar { width: 46px; height: 46px; flex: 0 0 auto; object-fit: cover; border-radius: 50%; }
.comment-main { min-width: 0; flex: 1; }
.comment-main header { display: flex; justify-content: space-between; gap: 15px; }
.comment-main time { color: var(--color-muted); font-size: 12px; }
.comment-body { margin: 8px 0; color: var(--color-muted); }
.comment-reply { color: var(--color-primary); font-size: 13px; font-weight: 700; }
.comment-children { margin: 16px 0 0; padding-left: 20px; border-left: 2px solid var(--color-border); }
.comment-form-wrap { margin-top: 34px; }
.comment-form-wrap h3 { margin-bottom: 2px; font: 800 22px var(--font-serif); }
.comment-note { margin-top: 0; color: var(--color-muted); font-size: 13px; }
.comment-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.comment-form-wrap label { display: grid; gap: 5px; color: var(--color-muted); font-size: 13px; }
.comment-form-wrap input, .comment-form-wrap textarea { width: 100%; padding: 11px 13px; color: var(--color-ink); background: var(--color-canvas); border: 1px solid var(--color-border); outline: 0; }
.comment-form-wrap textarea { margin-top: 14px; resize: vertical; }
.comment-form-wrap input:focus, .comment-form-wrap textarea:focus { border-color: var(--color-primary); }
.comment-actions { display: flex; align-items: center; justify-content: flex-end; gap: 16px; margin-top: 12px; }
.comment-actions button, .primary-button { display: inline-flex; justify-content: center; padding: 10px 22px; color: #fff; background: var(--color-primary); border: 1px solid var(--color-primary); font-weight: 700; }
.comment-actions button:hover, .primary-button:hover { color: #fff; background: var(--color-primary-dark); }
.empty-state, .error-page { padding: 80px 30px; text-align: center; background: var(--color-surface); }
.empty-state h2, .error-page h1 { margin: 0; font: 900 32px/1.3 var(--font-serif); }
.error-page { margin-block: 55px; box-shadow: var(--shadow); }
.error-code { display: block; color: var(--color-primary); font: 900 clamp(80px, 16vw, 180px)/1 var(--font-serif); opacity: .16; }
.error-actions { display: flex; justify-content: center; gap: 12px; margin-top: 28px; }
.error-actions button { padding: 10px 22px; color: var(--color-ink); background: transparent; border: 1px solid var(--color-border); }

.site-footer { color: #d1d2d0; background: var(--color-footer); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 70px; padding-block: 62px; }
.brand-light .brand-copy strong { color: #fff; }
.footer-brand p { max-width: 470px; color: #949794; font-size: 14px; }
.footer-column h2 { margin: 5px 0 17px; color: #fff; font: 800 16px var(--font-serif); }
.footer-column li { margin: 8px 0; font-size: 14px; }
.footer-column p, .footer-column a { color: #949794; font-size: 14px; }
.footer-column a:hover { color: #fff; }
.footer-bottom { padding: 17px 0; color: #777b78; background: rgba(0,0,0,.24); font-size: 12px; }
.footer-bottom .site-container { display: flex; justify-content: space-between; gap: 20px; }
.back-to-top { position: fixed; right: 24px; bottom: 24px; z-index: 50; width: 44px; height: 44px; color: #fff; background: var(--color-primary); border: 0; opacity: 0; visibility: hidden; transform: translateY(10px); transition: .2s ease; }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: none; }

@media (max-width: 980px) {
  .waterfall-grid { column-count: 2; }
  .lead-section { grid-template-columns: 1fr; }
  .secondary-stories { grid-template-columns: repeat(2, 1fr); grid-template-rows: none; }
  .content-layout, .article-layout { grid-template-columns: minmax(0, 1fr) 280px; gap: 28px; }
  .news-card { grid-template-columns: 220px minmax(0, 1fr); }
  .main-navigation a { padding-inline: 15px; }
}

@media (max-width: 760px) {
  .site-container { width: min(calc(100% - 28px), var(--container)); }
  .utility-slogan, .site-search { display: none; }
  .brand-row { min-height: 80px; }
  .brand-mark { width: 42px; height: 42px; font-size: 25px; }
  .brand-copy strong { font-size: 23px; }
  .menu-toggle { display: block; margin-left: auto; }
  .main-navigation { position: fixed; inset: 0 0 0 auto; z-index: 100; width: min(82vw, 340px); padding-top: 70px; background: var(--color-surface); border: 0; box-shadow: -15px 0 40px rgba(0,0,0,.25); transform: translateX(105%); transition: transform .25s ease; }
  .main-navigation.is-open { transform: none; }
  .nav-scroll, .main-navigation ul { display: block; }
  .main-navigation li { display: block; }
  .main-navigation a, .main-navigation .home-link { min-height: 50px; padding: 0 26px; color: var(--color-ink); background: transparent; border-bottom: 1px solid var(--color-border); }
  .main-navigation a:hover, .main-navigation li.on a { color: var(--color-primary); background: var(--color-soft); }
  .menu-open::after { content: ""; position: fixed; inset: 0; z-index: 90; background: rgba(0,0,0,.55); }
  .site-main { padding-block: 24px 52px; }
  .lead-section { margin-bottom: 34px; }
  .lead-story, .lead-media { min-height: 420px; }
  .lead-content { padding: 27px; }
  .lead-content h1 { font-size: 31px; }
  .lead-content p { display: none; }
  .secondary-stories { gap: 12px; }
  .secondary-story { min-height: 205px; }
  .secondary-content { padding: 17px; }
  .secondary-content h2 { font-size: 18px; }
  .content-layout, .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .article-layout { padding-top: 24px; }
  .article-detail { padding: 28px; }
  .article-body { font-size: 17px; line-height: 1.9; }
  .comment-fields { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .waterfall-grid { column-count: 1; }
  .waterfall-grid .news-card { display: block; margin-bottom: 18px; }
  .waterfall-grid .news-card-media { aspect-ratio: 16/10; }
  .waterfall-grid .news-card-media img { height: 100%; min-height: 0; max-height: none; }
  .waterfall-grid .news-card-body { padding: 19px; }
  .waterfall-grid .news-card h3 { font-size: 21px; }
  .waterfall-grid .news-card p { display: -webkit-box; }
  .waterfall-grid .news-card .story-meta span:first-child,
  .waterfall-grid .news-card .story-meta span:last-child { display: inline; }
  .utility-inner { gap: 8px; }
  .current-date { font-size: 11px; }
  .lead-story, .lead-media { min-height: 375px; }
  .secondary-stories { grid-template-columns: 1fr; }
  .secondary-story { min-height: 230px; }
  .news-card { grid-template-columns: 124px minmax(0, 1fr); gap: 15px; padding: 20px 0; }
  .news-card-media { aspect-ratio: 1/1; }
  .news-card h3 { margin-top: 4px; font-size: 18px; line-height: 1.42; }
  .news-card p { display: none; }
  .news-card .story-meta { margin-top: 7px; font-size: 11px; }
  .news-card .story-meta span:first-child, .news-card .story-meta span:last-child { display: none; }
  .section-heading h1, .section-heading h2 { font-size: 25px; }
  .article-detail, .comments-area { margin-inline: -14px; padding: 23px 18px; box-shadow: none; }
  .article-deck { font-size: 16px; }
  .article-byline { gap: 5px 12px; }
  .article-hero { margin-inline: -18px; }
  .comment-item { gap: 11px; }
  .comment-avatar { width: 38px; height: 38px; }
  .footer-grid { grid-template-columns: 1fr; padding-block: 44px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom .site-container { flex-direction: column; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}