/* AI Pulse — editorial system. Shared by the four publication sections. */
:root {
  --font-sans: 'Instrument Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Fraunces', 'Noto Serif SC', Georgia, serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --nav-h: 76px;
  --page-width: 1280px;
}
[data-theme="light"] {
  --bg: #f5f6f8; --bg-raised: #fff; --bg-tint: #edf0f5; --bg-inset: #e6eaf1;
  --ink: #182231; --ink-2: #525e70; --ink-3: #667389;
  --line: #dce1e9; --line-strong: #a5afc0;
  --accent: #2758db; --accent-ink: #204fcd; --accent-soft: #e9efff;
  --new: #247960; --nav-bg: rgba(245,246,248,.97); --grain-opacity: 0;
  --shadow-menu: 0 12px 40px #18223118;
}
[data-theme="dark"] {
  --bg: #101722; --bg-raised: #182230; --bg-tint: #202d3e; --bg-inset: #28364a;
  --ink: #eef2f8; --ink-2: #bdc7d7; --ink-3: #9caac0;
  --line: #2e3d52; --line-strong: #64758e;
  --accent: #91b1ff; --accent-ink: #a8c2ff; --accent-soft: #243552;
  --new: #76cbb0; --nav-bg: rgba(16,23,34,.97); --grain-opacity: 0;
  --shadow-menu: 0 12px 40px #0005;
}
html { scroll-padding-top: 160px; }
body { font-size: 16px; line-height: 1.7; }
body::after { display: none; }
button, a, input { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 4px;
}
.skip-link { position: fixed; top: -80px; left: 20px; padding: 10px 18px; background: var(--ink); color: var(--bg); z-index: 1001; }
.skip-link:focus { top: 12px; }
.wrap, .navbar-inner, .filter-inner { width: min(var(--page-width), 100%); padding-inline: 48px; }
.navbar { border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.navbar-inner { gap: 28px; }
.brand { flex-shrink: 0; gap: 0; }
.brand-name { font-family: var(--font-sans); font-size: 26px; font-weight: 700; letter-spacing: -1.3px; }
.brand-dot { display: inline-block; margin-left: 2px; color: var(--accent); }
.brand-sub { display: none; }
.section-nav { display: flex; align-self: stretch; align-items: center; gap: 30px; margin-left: auto; }
.section-nav a { display: flex; align-items: center; align-self: stretch; position: relative; text-decoration: none; font-size: 14px; font-weight: 500; color: var(--ink-2); white-space: nowrap; }
.section-nav a:hover { color: var(--accent); }
.section-nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
.section-nav a[aria-current="page"]::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 3px; background: var(--accent); }
.nav-actions { gap: 5px; margin-left: 12px; padding-left: 20px; border-left: 1px solid var(--line); }
.nav-dropdown { display: none; }
.nav-btn { width: 36px; height: 36px; border-radius: 50%; }
.hero { padding-top: calc(var(--nav-h) + 30px); padding-bottom: 32px; }
.dateline { padding: 0 0 24px; border: 0; font-size: 12px; letter-spacing: .035em; font-family: var(--font-sans); }
.dateline-date { font-family: var(--font-mono); font-size: 12px; }
.hero-badge { gap: 10px; color: var(--ink-2); }
.pulse-dot { width: 6px; height: 6px; background: var(--new); animation: none; }
.edition-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; color: var(--accent); }
.hero-composition { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: center; }
.hero h1 { margin: 10px 0 0; font-family: var(--font-sans); font-weight: 700; font-size: clamp(2rem, 4.6vw, 3.65rem); line-height: 1.28; letter-spacing: -.065em; text-wrap: balance; }
.hero h1 .acc em { font-family: var(--font-serif); font-weight: 500; letter-spacing: -.055em; }
.hero-desc { margin: 0; max-width: 40em; font-size: 15px; line-height: 1.9; text-wrap: pretty; }
.hero-note { align-self: end; border-left: 1px solid var(--line); padding: 4px 0 4px 30px; }
.hero-stats { gap: 28px; margin-top: 24px; padding: 18px 0 0; flex-wrap: nowrap; }
.stat-item { display: flex; align-items: baseline; gap: 10px; margin: 0; padding: 0 28px 0 0; }
.stat-number { font-family: var(--font-sans); font-size: 22px; font-weight: 600; letter-spacing: -.04em; }
.stat-label { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; white-space: nowrap; }
.filter-section { padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--nav-bg); }
.filter-inner { gap: 5px; min-height: 64px; padding-block: 10px; flex-wrap: wrap; overflow: visible; }
.filter-options { display: flex; gap: 5px; min-width: 0; overflow-x: auto; scrollbar-width: thin; }
.filter-tag { padding: 8px 14px; border-radius: 6px; font-size: 14px; min-height: 40px; }
.filter-tag.active { background: var(--ink); color: var(--bg); }
.filter-search input, .filter-search input:focus { width: 230px; height: 40px; border-radius: 6px; background: var(--bg-raised); font-size: 14px; }
.filter-search input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.main-content { padding-top: 30px; padding-bottom: 72px; }
.section-head { gap: 12px; align-items: center; padding-bottom: 16px; }
.section-head .kicker { order: 1; font-size: 11px; letter-spacing: .08em; color: var(--ink-3); }
.section-head h2 { font-family: var(--font-sans); font-size: 21px; font-weight: 700; letter-spacing: -.03em; }
.section-head .rule, .result-count { order: 2; font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; }
.home-page .main-content { display: grid; grid-template-columns: minmax(0,1fr) 290px; column-gap: 40px; row-gap: 36px; align-items: start; }
.spotlight { grid-column: 1 / -1; margin: 0; }
.spotlight-grid { grid-template-columns: 1.15fr 1fr; gap: 32px; margin-top: 20px; }
.spotlight-grid[hidden] { display: none; }
.spotlight-lead { position: relative; padding: 28px 32px; border-radius: 10px; background: #182638; color: #fff; display: flex; flex-direction: column; }
.spotlight-lead h3 { font-family: var(--font-sans); font-size: clamp(1.45rem,2.25vw,1.85rem); line-height: 1.55; font-weight: 600; letter-spacing: -.03em; text-wrap: pretty; margin: 18px 0; }
.lead-rank { font-size: 12px; color: #9bbdff; letter-spacing: .06em; }
.lead-summary { color: #c3cfdf; font-size: 15px; line-height: 1.9; -webkit-line-clamp: 3; }
.lead-meta { color: #b0bfd3; font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; margin-top: auto; padding-top: 24px; }
.lead-hint { white-space: nowrap; color: #b9cdf2; }
.spotlight-lead:hover .lead-hint { color: #fff; }
.spotlight-lead .detail-text, .spotlight-lead .detail-meta, .spotlight-lead .related-reports { color: #c3cfdf; }
.spotlight-lead .item-detail-inner { border-color: #42516a; }
.spotlight-lead a { color: #acc9ff; }
.spotlight-side { padding: 0; border: 0; justify-content: space-between; }
.side-item { padding: 13px 0; gap: 14px; grid-template-columns: 27px minmax(0,1fr); }
.side-item:first-child { padding-top: 0; }
.side-item:last-child { padding-bottom: 0; }
.side-num { font-family: var(--font-mono); font-size: 14px; font-style: normal; color: var(--accent); }
.side-title { font-family: var(--font-sans); font-size: 16px; line-height: 1.7; letter-spacing: -.02em; }
.side-meta { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; }
.spotlight-empty { border-bottom: 1px solid var(--line); padding: 24px; font-size: 14px; text-align: left; }
.feed { min-width: 0; }
.date-sep { font-family: var(--font-sans); font-size: 12px; letter-spacing: .02em; padding-top: 28px; }
.date-sep:first-child { padding-top: 20px; }
.news-item { padding: 24px 0; margin: 0; grid-template-columns: 44px minmax(0,1fr) 30px; gap: 18px; border-radius: 0; animation: none; }
.news-item.featured { margin: 0; padding-left: 0; }
.news-item.featured::before { display: none; }
.news-item:hover { background: transparent; }
.news-item:hover .item-title { color: var(--accent); }
.item-time { font-size: 12px; }
.item-meta { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; gap: 8px; }
.item-title { font-family: var(--font-sans); font-size: 19px; line-height: 1.65; font-weight: 600; letter-spacing: -.025em; }
.item-summary { font-size: 15px; line-height: 1.9; color: var(--ink-2); -webkit-line-clamp: 2; margin-top: 9px; }
.expand-btn { width: 30px; height: 30px; border-radius: 50%; background: var(--bg-raised); border: 1px solid var(--line); }
.detail-text { font-size: 15px; line-height: 1.9; overflow-wrap: anywhere; }
.expanded .item-detail { max-height: none; overflow: visible; }
.detail-meta, .related-reports { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0; }
.home-page .lab-section { margin: 0; border-left: 1px solid var(--line); padding-left: 28px; }
.home-page .lab-section .section-head { flex-wrap: wrap; gap: 6px 12px; }
.home-page .lab-section .section-head .rule { display: none; }
.lab-grid { display: flex; flex-direction: column; gap: 18px; margin-top: 20px; border: 0; border-radius: 0; overflow: visible; background: none; }
.lab-card { padding: 18px; border: 1px solid var(--line); border-radius: 8px; gap: 7px; overflow: hidden; }
.lab-card:hover { background: var(--bg-raised); border-color: var(--accent); }
.lab-card-index { font-size: 11px; letter-spacing: .08em; }
.lab-card-title { font-family: var(--font-sans); font-size: 20px; margin-top: 5px; }
.lab-card-desc { font-size: 14px; line-height: 1.8; }
.lab-card-meta { font-size: 11px; letter-spacing: .02em; line-height: 1.7; padding-top: 12px; border-top: 1px solid var(--line); margin-top: 8px; }
.lab-card-arrow { border: 0; background: var(--accent-soft); color: var(--accent); }
.lab-mini-art { height: 68px; display: flex; gap: 8px; align-items: center; margin: 6px 0 4px; }
.lab-mini-art img { width: 62px; height: 62px; border-radius: 5px; object-fit: cover; }
.lab-mini-art img:nth-child(2) { transform: rotate(8deg); margin-left: -18px; }
.lab-mini-art img:nth-child(3) { transform: rotate(-5deg); margin-left: -16px; }
.lab-visual { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; height: 62px; }
.lab-visual i { background: var(--accent-soft); border-radius: 3px; }
.lab-visual i:nth-child(1) { background: #284ad8; }
.lab-visual i:nth-child(2) { background: #a6b9ef; border-radius: 50% 50% 3px 3px; }
.lab-visual i:nth-child(3) { background: #1d314e; clip-path: polygon(0 100%,50% 0,100% 100%); }
.load-more { margin-top: 28px; }
.load-more-btn { font-size: 14px; padding: 12px 28px; border-radius: 6px; background: var(--bg-raised); border: 1px solid var(--line); }
.footer { width: min(var(--page-width), 100%); margin-inline: auto; padding: 28px 48px 36px; text-align: left; border-top: 1px solid var(--line); font-size: 12px; line-height: 1.9; }
.footer-brand { font-family: var(--font-sans); font-size: 26px; font-weight: 700; letter-spacing: -1px; color: var(--ink); margin-bottom: 10px; }
.footer p { font-family: var(--font-sans); text-transform: none; letter-spacing: 0; }
.traffic-toggle { cursor: pointer; font: inherit; text-decoration: underline; text-underline-offset: 4px; }
.project-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; margin-top: 24px; }
.project-card { border-radius: 10px; box-shadow: none; }
.project-card:hover { border-color: var(--accent); box-shadow: 0 16px 35px #1422340a; transform: translateY(-4px); }
.project-cover { aspect-ratio: 16 / 9; }
.project-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.project-index { font-size: 12px; letter-spacing: .05em; }
.project-name { font-family: var(--font-sans); font-size: 26px; font-weight: 700; margin-top: 10px; }
.project-desc { font-size: 15px; line-height: 1.85; margin-bottom: auto; }
.project-tag { font-family: var(--font-sans); font-size: 12px; padding: 3px 8px; letter-spacing: 0; border-radius: 4px; }
.project-cta { display: flex; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 16px; margin-top: 24px; font-size: 14px; }
.project-play-badge { opacity: 1; transform: none; background: #182638; font-size: 12px; border-radius: 5px; box-shadow: none; }
.ghost-card { grid-column: 1 / -1; min-height: 0; padding: 20px; gap: 14px; flex-direction: row; border: 0; border-top: 1px solid var(--line); border-radius: 0; }
.ghost-card p { font-size: 14px; }
.ghost-card .ghost-sub { font-size: 12px; letter-spacing: 0; }
.music-page .main-content { display: grid; grid-template-columns: minmax(0,1fr) 310px; gap: 40px; align-items: start; }
.music-page .lyrics-section { margin-top: 0; }
.track-list { gap: 18px; }
.track-card { grid-template-columns: 150px minmax(0,1fr); gap: 24px; border-radius: 9px; padding: 20px; }
.track-cover { width: 150px; height: 150px; border-radius: 5px; }
.track-name { font-family: var(--font-sans); font-size: 24px; font-weight: 600; }
.track-style-tag { font-size: 11px; border: 0; padding: 0; border-radius: 0; letter-spacing: .06em; }
.track-meta, .time-row { font-size: 12px; }
.text-btn { font-size: 12px; border-radius: 5px; }
.cover-play { opacity: 1; background: linear-gradient(transparent, #101c2b50); }
.cover-play-btn { background: #fff; color: #182638; box-shadow: 0 4px 15px #0002; }
.lyrics-body { margin-top: 24px; border: 0; border-radius: 0; border-left: 1px solid var(--line); background: none; padding: 0 0 0 24px; font-family: var(--font-sans); font-size: 15px; line-height: 2.1; }
.lyrics-body .lyr-tag { font-size: 12px; letter-spacing: .02em; margin-top: 22px; }
.masonry { columns: 3 260px; column-gap: 24px; }
.g-card { border-radius: 8px; margin-bottom: 24px; }
.g-foot { padding: 14px; }
.g-author-name { font-size: 14px; }
.g-stats, .g-model-tag, .g-overlay-prompt { font-size: 12px; }
.lb-prompt { font-size: 14px; line-height: 1.8; }
.lb-block-title, .lb-param dt, .lb-param dd { font-size: 12px; }
.empty-state { padding: 40px 20px; }
.rise { animation-duration: .45s; }
@media(min-width:1600px) { :root { --page-width: 1400px; } }
@media(max-width:1100px) {
  .wrap, .navbar-inner, .filter-inner { padding-inline: 32px; }
  .section-nav { gap: 20px; }
  .navbar-inner { gap: 16px; }
  .hero-composition { grid-template-columns: 1.35fr 1fr; gap: 24px; }
  .home-page .main-content { grid-template-columns: minmax(0,1fr) 250px; column-gap: 28px; }
  .home-page .lab-section { padding-left: 20px; }
  .filter-search { flex: 1; min-width: 175px; }
  .filter-search input, .filter-search input:focus { width: 100%; }
  .project-grid { gap: 16px; }
  .project-body { padding: 20px; }
  .project-name { font-size: 23px; }
  .music-page .main-content { grid-template-columns: minmax(0,1fr) 240px; gap: 28px; }
  .track-card { grid-template-columns: 112px minmax(0,1fr); gap: 18px; }
  .track-cover { width: 112px; height: 112px; }
  .track-name { font-size: 21px; }
}
@media(max-width:800px) {
  :root { --nav-h: 112px; }
  .navbar-inner { position: relative; flex-wrap: wrap; align-content: flex-start; gap: 0; padding-top: 12px; }
  .brand { height: 36px; align-items: center; }
  .nav-actions { margin-left: auto; border: 0; padding-left: 0; }
  .section-nav { order: 3; flex-basis: 100%; margin: 9px 0 0; height: 54px; justify-content: space-between; gap: 12px; }
  .section-nav a { font-size: 14px; }
  .hero { padding-top: calc(var(--nav-h) + 24px); padding-bottom: 24px; }
  .hero-composition { grid-template-columns: 1fr; gap: 18px; }
  .hero-note { padding: 0; border: 0; }
  .hero h1 { font-size: 40px; letter-spacing: -.055em; }
  .hero-desc { font-size: 14px; }
  .hero-stats { margin-top: 20px; gap: 20px; }
  .stat-item { padding-right: 20px; }
  .filter-section { position: relative; top: auto; }
  .filter-inner { gap: 5px; }
  .filter-options { width: 100%; padding-block: 4px; }
  .filter-search { order: -1; flex-basis: 100%; width: 100%; margin: 0 0 6px; }
  .filter-tag { padding-inline: 12px; }
  .home-page .main-content { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .home-page .lab-section { padding: 0; border: 0; }
  .lab-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
  .lab-card { padding: 16px; }
  .lab-card-meta { font-size: 10px; }
  .spotlight-grid { grid-template-columns: 1fr; gap: 20px; }
  .spotlight-lead { padding: 24px; }
  .spotlight-side { border: 0; }
  .side-item { padding: 16px 0; }
  .section-head .rule { width: auto; margin-left: auto; }
  .project-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .music-page .main-content { grid-template-columns: 1fr; gap: 36px; }
  .track-card { grid-template-columns: 140px minmax(0,1fr); }
  .track-cover { width: 140px; height: 140px; }
  .lyrics-body { columns: 2; column-gap: 40px; border: 0; padding: 0; }
  .masonry { columns: 2; column-gap: 16px; }
}
@media(max-width:520px) {
  .wrap, .navbar-inner, .filter-inner { padding-inline: 20px; }
  .hero h1 { font-size: 34px; }
  .dateline { font-size: 11px; padding-bottom: 20px; gap: 8px; flex-wrap: wrap; }
  .dateline-date { font-size: 11px; }
  .edition-label { font-size: 11px; }
  .stat-item { flex-direction: column; align-items: flex-start; gap: 3px; padding-right: 16px; }
  .hero-stats { gap: 16px; }
  .stat-number { font-size: 24px; }
  .filter-tag { padding: 6px 10px; min-height: 36px; font-size: 13px; }
  .main-content { padding-top: 24px; }
  .section-head { flex-wrap: wrap; }
  .section-head h2 { font-size: 20px; }
  .spotlight .section-head .rule { flex-basis: 100%; margin-left: 0; text-align: left; }
  .spotlight-lead h3 { font-size: 23px; line-height: 1.6; }
  .lead-summary { font-size: 14px; }
  .lead-meta { flex-wrap: wrap; }
  .side-title { font-size: 16px; }
  .news-item, .news-item.featured { display: grid; grid-template-columns: minmax(0,1fr) 30px; gap: 5px 12px; padding: 20px 0; }
  .item-rail { grid-column: 1; margin: 0; }
  .item-main { grid-column: 1; }
  .news-item .expand-btn { position: static; grid-column: 2; grid-row: 2; }
  .item-title { font-size: 17px; line-height: 1.7; }
  .item-summary { font-size: 14px; }
  .item-meta { font-size: 11px; }
  .lab-grid { grid-template-columns: 1fr; }
  .lab-card { padding: 20px; }
  .lab-card-meta { font-size: 11px; }
  .project-grid { grid-template-columns: 1fr; gap: 24px; }
  .project-cover { aspect-ratio: 16 / 9; }
  .project-name { font-size: 25px; }
  .ghost-card { flex-wrap: wrap; justify-content: flex-start; padding-inline: 0; }
  .ghost-card .ghost-sub { flex-basis: 100%; }
  .track-card { grid-template-columns: 92px minmax(0,1fr); gap: 14px; padding: 14px; }
  .track-cover { width: 92px; height: 92px; }
  .track-top { gap: 4px; }
  .track-name { font-size: 20px; }
  .track-meta { font-size: 11px; }
  .track-actions .text-btn { padding: 3px 7px; }
  .lyrics-body { columns: 1; }
  .masonry { column-gap: 12px; }
  .g-card { margin-bottom: 12px; }
  .g-foot { padding: 10px 8px; gap: 5px; flex-wrap: wrap; }
  .g-author-name { font-size: 12px; max-width: calc(100% - 30px); }
  .g-stats { margin-left: 0; }
  .footer { padding: 24px 20px; }
}
@media(prefers-reduced-motion:reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .g-card { opacity: 1; transform: none; }
}