:root {
  color-scheme: dark;
  --color-bg: #0f1115;
  --color-surface: #161920;
  --color-card: #1e2230;
  --color-text: #f5f7fa;
  --color-muted: #9aa1b1;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-accent: #5ab4ff;
  --color-accent-soft: rgba(90, 180, 255, 0.16);
  --color-warning: #fbbf24;
  --color-success: #34d399;

  --font-base: "Noto Sans JP", "Hiragino Sans", system-ui, sans-serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.35);
  --transition-fast: 180ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  block-size: 100%;
  scroll-behavior: smooth;
}

body {
  min-block-size: 100%;
  margin: 0;
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-inline-size: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 17, 21, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-6));
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.page-header__content {
  max-inline-size: 960px;
  margin-inline: auto;
}

.page-header__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin: 0 0 var(--space-1);
}

.page-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 var(--space-2);
}

.page-header__meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin: 0 0 var(--space-2);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.page-header__chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.9rem;
  border-radius: 999px;
  background: rgba(90, 180, 255, 0.15);
  color: var(--color-accent);
  font-size: 0.85rem;
  margin: 0;
}

.zero-week-banner {
  margin-top: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid rgba(251, 191, 36, 0.4);
  color: #fee8b9;
  font-size: 0.95rem;
}

main {
  max-inline-size: 960px;
  margin: var(--space-6) auto var(--space-6);
  padding: 0 clamp(var(--space-4), 4vw, var(--space-6));
}

.company-nav {
  margin-block: var(--space-4);
}

.company-tabs {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-2);
  position: relative;
}

.company-tabs::-webkit-scrollbar {
  height: 6px;
}

.company-tabs::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
}

.company-tab {
  flex: 0 0 auto;
  min-inline-size: 8rem;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  scroll-snap-align: start;
  transition: background var(--transition-fast), color var(--transition-fast), border var(--transition-fast);
}

.company-tab:hover {
  color: var(--color-text);
}

.company-tab.is-active {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  box-shadow: inset 0 0 0 1px rgba(90, 180, 255, 0.2);
}

.company-panels {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.company-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: clamp(var(--space-4), 3vw, var(--space-5));
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.company-panel.is-active {
  opacity: 1;
  transform: translateY(0);
}

.company-panel[hidden] {
  display: none;
}

.company-panel__header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin-bottom: var(--space-3);
}

.company-panel__header h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

.company-panel__badge {
  font-size: 0.85rem;
  padding: 0.2rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-muted);
}

.company-panel__summary {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: 1rem;
}

.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.article-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  display: grid;
  gap: var(--space-1);
}

.article-card a {
  font-weight: 600;
  line-height: 1.4;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.article-card__meta {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.company-panel__empty {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 255, 255, 0.25);
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.03);
}

.company-panel__actions {
  margin-top: var(--space-4);
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.9rem;
  color: var(--color-accent);
  text-decoration: none;
}

.ghost-link::after {
  content: "↥";
  font-size: 0.8em;
}

.page-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.tab-scroll-hint {
  position: relative;
}

.tab-scroll-hint::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  inline-size: 48px;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(15, 17, 21, 0), rgba(15, 17, 21, 0.95));
}

.company-tabs:not(:has(.company-tab:last-child:hover))::after {
  content: "";
}

@media (min-width: 720px) {
  .article-list {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (min-width: 1024px) {
  .company-tabs {
    justify-content: center;
  }
  .company-tab {
    min-inline-size: 9.5rem;
  }
}

@media (max-width: 599px) {
  body {
    font-size: 0.95rem;
  }
  .company-tab {
    font-size: 0.9rem;
  }
}

.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}