:root {
  color-scheme: light;
  --ink: #202724;
  --muted: #65706c;
  --paper: #f7f4ec;
  --surface: rgba(255, 255, 252, .88);
  --surface-solid: #fffefa;
  --header: rgba(247, 244, 236, .9);
  --line: rgba(32, 51, 44, .13);
  --line-strong: rgba(32, 51, 44, .22);
  --accent: #087a5d;
  --accent-ink: #fff;
  --accent-soft: rgba(8, 122, 93, .09);
  --high: #ad352e;
  --medium: #825900;
  --low: #60706a;
  --glow-a-hue: 164;
  --glow-b-hue: 205;
  --shadow: 0 24px 70px rgba(38, 46, 41, .14);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", Meiryo, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf2ef;
  --muted: #a6b1ad;
  --paper: #111614;
  --surface: rgba(24, 31, 28, .92);
  --surface-solid: #181f1c;
  --header: rgba(17, 22, 20, .9);
  --line: rgba(213, 235, 226, .13);
  --line-strong: rgba(213, 235, 226, .24);
  --accent: #67dfb9;
  --accent-ink: #06251c;
  --accent-soft: rgba(103, 223, 185, .1);
  --high: #ff9a90;
  --medium: #ffd37c;
  --low: #b0bdb8;
  --shadow: 0 28px 80px rgba(0, 0, 0, .4);
}

* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(55rem 32rem at 5% -15%, hsla(var(--glow-a-hue), 58%, 55%, .1), transparent 66%),
    radial-gradient(48rem 30rem at 100% 30%, hsla(var(--glow-b-hue), 64%, 60%, .065), transparent 68%),
    var(--paper);
  background-attachment: fixed;
  line-height: 1.72;
  transition: color .25s ease, background 5s ease;
}
body::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  opacity: .34;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 68%);
  animation: grid-drift 28s linear infinite;
}
@keyframes grid-drift { to { transform: translateY(72px); } }
button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--header);
  backdrop-filter: blur(18px);
}
.site-header .shell { min-height: 68px; display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 780; letter-spacing: -.035em; white-space: nowrap; }
.brand::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px color-mix(in srgb, var(--accent) 60%, transparent); }
.brand small { color: var(--muted); font-weight: 500; letter-spacing: 0; font-size: .69rem; }
.site-nav, .utility-tabs { display: flex; align-items: center; gap: 8px; }
.site-nav { gap: 24px; color: var(--muted); font-size: .82rem; }
.site-nav a { text-decoration: none; }
.site-nav a:hover { color: var(--ink); }
.utility-tab { min-height: 38px; padding: 7px 13px; border: 1px solid transparent; border-radius: 999px; color: var(--muted); background: transparent; cursor: pointer; font-size: .78rem; }
.utility-tab:hover { color: var(--ink); background: var(--surface); }
.utility-tab.is-active { color: var(--accent); border-color: var(--line-strong); background: var(--accent-soft); }

.utility-dock { position: sticky; z-index: 25; top: 68px; }
.utility-panel { position: absolute; top: 0; left: 0; width: 100%; border-bottom: 1px solid var(--line-strong); background: var(--surface-solid); box-shadow: var(--shadow); }
.panel-shell { padding-block: 26px 30px; }
.panel-heading { display: flex; align-items: start; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.panel-heading h2 { margin: 2px 0 0; font-size: 1.32rem; line-height: 1.3; letter-spacing: -.025em; }
.panel-close { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; color: var(--muted); background: transparent; cursor: pointer; font-size: 1.35rem; line-height: 1; }
.field-label { display: block; color: var(--muted); font-size: .65rem; font-weight: 650; letter-spacing: .1em; }

.search-tools { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 12px; }
.search-block, .source-panel { border: 1px solid var(--line); background: var(--surface); border-radius: 14px; }
.search-block { display: flex; align-items: center; min-height: 68px; padding: 10px 16px; }
.search-icon { flex: 0 0 auto; width: 19px; height: 19px; margin-right: 12px; color: var(--muted); }
.search-wrap { width: 100%; }
.search { width: 100%; border: 0; outline: 0; background: transparent; padding: 2px 0 0; color: var(--ink); font-size: .96rem; }
.search::placeholder { color: var(--muted); opacity: .72; }
.source-panel { position: relative; }
.source-toggle { width: 100%; min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 16px; border: 0; background: transparent; color: var(--ink); cursor: pointer; text-align: left; }
.source-toggle::after { content: "+"; color: var(--accent); font-size: 1.35rem; font-weight: 350; transition: transform .2s ease; }
.source-toggle[aria-expanded="true"]::after { transform: rotate(45deg); }
.source-summary { display: block; font-size: .9rem; }
.source-options { display: none; position: absolute; z-index: 40; top: calc(100% + 8px); right: 0; width: min(430px, 92vw); max-height: 320px; overflow: auto; padding: 9px; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--surface-solid); box-shadow: var(--shadow); }
.source-panel.is-open .source-options { display: grid; gap: 5px; }
.source-option { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; padding: 10px 11px; border: 1px solid transparent; border-radius: 9px; color: var(--muted); background: transparent; text-align: left; cursor: pointer; }
.source-option::after { content: ""; width: 15px; height: 15px; border: 1px solid var(--line-strong); border-radius: 4px; }
.source-option:hover { color: var(--ink); background: var(--accent-soft); }
.source-option.is-active { color: var(--ink); border-color: color-mix(in srgb, var(--accent) 30%, transparent); background: var(--accent-soft); }
.source-option.is-active::after { border-color: var(--accent); background: var(--accent); box-shadow: inset 0 0 0 3px var(--surface-solid); }
.clear-sources { border: 0; background: transparent; color: var(--accent); padding: 9px 11px; text-align: left; cursor: pointer; font-size: .78rem; }

.info-grid { display: grid; grid-template-columns: .7fr 1fr 1fr; gap: clamp(24px, 5vw, 64px); }
.info-grid h3 { margin: 0 0 6px; font-size: .93rem; }
.info-grid p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.7; }
.info-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stat { padding-right: 10px; border-right: 1px solid var(--line); }
.stat strong { display: block; font-size: 1.8rem; line-height: 1.1; letter-spacing: -.04em; }
.stat span { color: var(--muted); font-size: .7rem; }
.text-link { grid-column: 1 / -1; color: var(--accent); font-size: .75rem; text-decoration: none; }

.display-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 6vw, 80px); }
fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
legend { margin-bottom: 9px; color: var(--muted); font-size: .75rem; }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 440px; padding: 3px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); }
.segmented button { min-height: 38px; border: 0; border-radius: 8px; color: var(--muted); background: transparent; cursor: pointer; font-size: .78rem; }
.segmented button.is-active { color: var(--accent); background: var(--accent-soft); font-weight: 700; }
.font-control { display: grid; grid-template-columns: auto minmax(130px, 1fr) auto 52px; align-items: center; gap: 10px; max-width: 460px; color: var(--muted); font-size: .7rem; }
.font-control input { width: 100%; accent-color: var(--accent); cursor: pointer; }
.font-control output { color: var(--accent); text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; }

.home-main { padding-top: 32px; }
.feed-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 10px 2px 18px; border-bottom: 1px solid var(--line-strong); }
.feed-heading h1 { margin: 4px 0 0; font-size: clamp(1.75rem, 4vw, 2.45rem); line-height: 1.2; letter-spacing: -.045em; }
.feed-heading > span { color: var(--muted); font-size: .78rem; font-variant-numeric: tabular-nums; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .14em; font-size: .66rem; font-weight: 750; }
.feed { margin-bottom: 28px; }
.entry { display: grid; grid-template-columns: 112px minmax(0, 1fr) 160px; gap: clamp(20px, 4vw, 48px); padding: 32px 2px; border-bottom: 1px solid var(--line); align-items: start; content-visibility: auto; contain-intrinsic-size: 230px; }
.entry-date { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .78rem; letter-spacing: .03em; }
.entry h3 { max-width: 760px; margin: 0 0 9px; font-size: clamp(1.18rem, 2.3vw, 1.48rem); line-height: 1.43; letter-spacing: -.025em; text-wrap: balance; }
.entry h3 a { text-decoration: none; background-image: linear-gradient(var(--accent), var(--accent)); background-size: 0 1px; background-position: 0 100%; background-repeat: no-repeat; transition: color .2s ease, background-size .25s ease; }
.entry h3 a:hover { color: var(--accent); background-size: 100% 1px; }
.entry p { max-width: 730px; margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.75; }
.meta { display: flex; gap: 7px; margin-top: 14px; flex-wrap: wrap; }
.tag, .importance { display: inline-flex; align-items: center; min-height: 24px; border-radius: 999px; padding: 3px 9px; font-size: .65rem; border: 1px solid var(--line); }
.importance-high { color: var(--high); border-color: color-mix(in srgb, var(--high) 35%, transparent); background: color-mix(in srgb, var(--high) 7%, transparent); }
.importance-medium { color: var(--medium); border-color: color-mix(in srgb, var(--medium) 30%, transparent); background: color-mix(in srgb, var(--medium) 6%, transparent); }
.importance-low { color: var(--low); }
.company-mark { color: var(--muted); text-align: right; font-weight: 650; font-size: .75rem; overflow-wrap: anywhere; }
.company-mark::before { content: "SOURCE"; display: block; opacity: .62; font-size: .55rem; letter-spacing: .12em; }
.empty { padding: 64px 0; color: var(--muted); text-align: center; }
.feed-sentinel { height: 2px; }
.feed-status { margin: 0 0 72px; color: var(--muted); text-align: center; font-size: .75rem; }

.hero { padding: 70px 0 42px; }
.hero h1 { margin: 8px 0 12px; font-size: clamp(2.5rem, 7vw, 5rem); line-height: 1; letter-spacing: -.06em; }
.lede { margin: 0; color: var(--muted); max-width: 680px; font-size: 1rem; }
.section-title { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line-strong); }
.section-title h2 { margin: 0; font-size: 1.2rem; }
.section-title span { color: var(--muted); font-size: .78rem; }
.article { width: min(780px, calc(100% - 40px)); margin: 72px auto 104px; }
.article-date { display: block; margin-bottom: 8px; color: var(--muted); font-size: .75rem; font-variant-numeric: tabular-nums; letter-spacing: .08em; }
.article h1 { max-width: 720px; margin: 12px 0 16px; font-size: clamp(1.65rem, 3.5vw, 2.5rem); line-height: 1.25; letter-spacing: -.04em; text-wrap: balance; }
.article-header { border-bottom: 1px solid var(--line); padding-bottom: 26px; margin-bottom: 38px; }
.article-header .lede { max-width: 720px; font-size: .96rem; line-height: 1.75; }
.article-body { font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", YuMincho, Georgia, serif; font-size: 1.06rem; }
.article-body h2 { font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", sans-serif; margin-top: 2.5em; letter-spacing: -.025em; }
.article-body h3 { font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", sans-serif; margin-top: 2.1em; letter-spacing: -.018em; }
.article-body code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; }
.article-body :not(pre) > code { padding: .12em .35em; border: 1px solid var(--line); border-radius: 5px; background: rgba(255,255,255,.045); font-size: .9em; }
.article-body pre { margin: 0; padding: 58px 20px 20px; overflow-x: auto; border: 1px solid var(--line-strong); border-radius: 14px; background: #05090b; color: #e6f4ef; font-size: .86rem; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }
.copy-prompt { position: relative; margin: 18px 0 28px; }
.copy-prompt-button { position: absolute; z-index: 1; top: 10px; right: 10px; min-height: 34px; padding: 6px 11px; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--ink); background: rgba(16,23,27,.94); cursor: pointer; font-family: "Noto Sans JP", sans-serif; font-size: .72rem; font-weight: 700; transition: border-color .2s ease, color .2s ease, background .2s ease; }
.copy-prompt-button:hover { border-color: var(--accent); color: var(--accent); }
.copy-prompt-button.is-copied { border-color: var(--accent); color: var(--accent-ink); background: var(--accent); }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }
.source-link { display: inline-flex; margin-top: 34px; padding: 11px 17px; background: var(--accent); color: var(--accent-ink); border-radius: 9px; text-decoration: none; font-family: "Noto Sans JP", sans-serif; font-weight: 700; }
.site-footer { border-top: 1px solid var(--line); padding: 26px 0 42px; color: var(--muted); font-size: .72rem; }

@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1120px); }
  .site-header .shell { min-height: 60px; gap: 12px; }
  .brand { font-size: .9rem; }
  .brand small { display: none; }
  .site-nav { gap: 14px; font-size: .74rem; }
  .site-nav a:nth-child(2) { display: none; }
  .utility-tabs { gap: 1px; }
  .utility-tab { min-height: 36px; padding: 6px 8px; border-radius: 8px; font-size: .7rem; }
  .utility-dock { top: 60px; }
  .panel-shell { max-height: calc(100vh - 60px); overflow-y: auto; padding-block: 20px 24px; }
  .panel-heading { margin-bottom: 16px; }
  .search-tools, .display-grid, .info-grid { grid-template-columns: 1fr; }
  .source-options { position: static; width: auto; max-height: 230px; margin: 0 7px 7px; box-shadow: none; }
  .info-grid { gap: 24px; }
  .info-stats { max-width: 330px; }
  .home-main { padding-top: 19px; }
  .feed-heading { padding: 7px 0 13px; }
  .feed-heading h1 { font-size: 1.55rem; }
  .entry { grid-template-columns: 1fr auto; gap: 7px 18px; padding: 25px 0; }
  .entry-date { grid-column: 1; }
  .entry-main { grid-column: 1 / -1; grid-row: 2; }
  .company-mark { grid-column: 2; grid-row: 1; max-width: 135px; }
  .company-mark::before { display: none; }
  .entry h3 { font-size: 1.16rem; line-height: 1.48; }
  .entry p { font-size: .89rem; line-height: 1.72; }
  .hero { padding: 52px 0 34px; }
  .feed-status { margin-bottom: 58px; }
}

@media (max-width: 390px) {
  .brand::before { display: none; }
  .utility-tab { padding-inline: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}