/* briefings.html: page styles, loaded after base.css */
.cond { font-stretch: 72%; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.btn-line { border-color: rgba(255,255,255,0.6); color: #FFFFFF; background: transparent; }
.btn-line:hover { background: rgba(255,255,255,0.1); color: #FFFFFF; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.nav a[aria-current="page"] { background: rgba(13,19,48,0.35); color: #FFFFFF; }
.hero { position: relative; background: var(--blue); color: #FFFFFF; overflow: hidden; isolation: isolate; }
.hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 40%; mix-blend-mode: luminosity; opacity: 0.2; filter: grayscale(1) contrast(1.2); z-index: -1; }
.hero-body { padding: 40px 0 72px; display: grid; gap: 40px; align-items: center; }
.hero-h { margin: 0; font-size: 38px; line-height: 1.02; text-wrap: balance; }
.hero-lead { margin: 22px 0 0; max-width: 560px; font-size: 19px; line-height: 1.55; color: rgba(255,255,255,0.9); }
.hero .ctas { margin-top: 32px; }
.hero-fine { margin: 16px 0 0; font-size: 14px; color: rgba(255,255,255,0.84); }
.brief { background: #FFFFFF; color: var(--ink); border-radius: 20px; box-shadow: 0 40px 80px -40px rgba(4,8,36,0.65); overflow: hidden; }
.brief-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 16px 20px; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 650; color: var(--steel); }
.brief-top .ic { color: var(--ink); }
.tag-demo { font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 6px; background: var(--paper); color: var(--steel); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }
.chips button { height: 34px; min-width: 44px; padding: 0 12px; border-radius: 999px; border: 1.5px solid #7F889F; background: #FFFFFF; color: var(--ink); font-family: inherit; font-size: 13px; font-weight: 750; cursor: pointer; }
.chips button:hover { border-color: var(--ink); }
.chips button[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: #FFFFFF; }
.brief-body { padding: 22px 22px 8px; }
.brief-kicker { margin: 0; font-size: 14px; font-weight: 750; color: var(--blue); }
.brief-title { margin: 6px 0 0; font-size: 26px; line-height: 1.15; font-stretch: 112%; font-weight: 800; letter-spacing: -0.02em; }
.brief-text { margin: 12px 0 0; font-size: 17px; line-height: 1.6; color: #2A3150; min-height: 4.8em; }
.facts { list-style: none; margin: 16px 0 0; padding: 0; }
.facts li { display: flex; align-items: flex-start; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; line-height: 1.5; }
.fact-ic { flex: none; width: 26px; height: 26px; border-radius: 8px; background: var(--blue-soft); color: var(--blue); display: grid; place-items: center; }
.fact-tag { flex: none; margin-left: auto; font-size: 12px; font-weight: 750; padding: 2px 8px; border-radius: 6px; background: var(--paper); color: var(--steel); }
.brief-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; padding: 12px 22px 16px; background: var(--paper); font-size: 13px; color: var(--steel); }
.sec { padding: 72px 0; }
.sec-paper { background: var(--paper); }
.sh { display: grid; gap: 16px; margin-bottom: 40px; }
.sh h2 { margin: 0; font-size: 32px; line-height: 1.06; text-wrap: balance; }
.sh p { margin: 0; font-size: 18px; line-height: 1.6; color: var(--steel); max-width: 560px; }
.on-dark .sh p { color: rgba(255,255,255,0.8); }
.parts { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 2px solid var(--ink); }
.part { display: grid; gap: 10px 32px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.part h3 { margin: 0; font-size: 24px; line-height: 1.2; font-stretch: 115%; font-weight: 800; letter-spacing: -0.02em; display: flex; align-items: center; gap: 12px; }
.part h3 .ic { width: 26px; height: 26px; color: var(--blue); }
.part p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--steel); }
.part blockquote { margin: 0; padding: 14px 18px; border-radius: 12px; background: var(--paper); font-size: 16px; line-height: 1.5; color: var(--ink); font-weight: 600; }
.part blockquote small { display: block; margin-top: 6px; font-size: 12px; font-weight: 700; color: var(--steel); }
.feed-sec { background: var(--ink); color: #FFFFFF; }
.feed-sec .sh h2 { color: #FFFFFF; }
.tabs { display: inline-flex; gap: 4px; padding: 5px; border-radius: 12px; background: rgba(255,255,255,0.08); margin-bottom: 24px; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.tabs button { height: 44px; padding: 0 18px; border: 0; border-radius: 8px; background: transparent; color: rgba(255,255,255,0.8); font-family: inherit; font-size: 15px; font-weight: 650; white-space: nowrap; cursor: pointer; }
.tabs button:hover { color: #FFFFFF; }
.tabs button[aria-selected="true"] { background: #FFFFFF; color: var(--ink); }
.feed-grid { display: grid; gap: 24px; align-items: start; }
.feed { list-style: none; margin: 0; padding: 0; position: relative; }
.feed::before { content: ""; position: absolute; left: 75px; top: 8px; bottom: 8px; width: 2px; background: var(--line-dark); }
.feed li { position: relative; display: grid; grid-template-columns: 52px 24px 1fr; gap: 0 12px; align-items: start; padding: 10px 0; }
.feed-time { font-size: 15px; line-height: 1.5; text-align: right; color: var(--amber); padding-top: 9px; }
.feed-dot { width: 14px; height: 14px; margin: 13px 0 0 5px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px var(--ink); position: relative; z-index: 1; }
.feed-item { background: var(--ink-2); border: 1px solid var(--line-dark); border-radius: 14px; padding: 12px 16px; display: grid; gap: 4px; }
.feed-item span { font-size: 12px; font-weight: 750; color: var(--amber); }
.feed-item p { margin: 0; font-size: 16px; line-height: 1.5; color: #FFFFFF; }
.feed-note { border: 1px solid var(--line-dark); border-radius: 18px; padding: 24px; display: grid; gap: 16px; }
.feed-note h3 { margin: 0; font-size: 22px; line-height: 1.2; font-stretch: 115%; font-weight: 800; letter-spacing: -0.02em; }
.feed-note p { margin: 0; font-size: 16px; line-height: 1.6; color: rgba(255,255,255,0.8); }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: 15px; line-height: 1.5; }
.ticks li { display: flex; gap: 10px; align-items: flex-start; }
.ticks .ic { color: var(--amber); margin-top: 2px; }
.uses { display: grid; gap: 36px; }
.duo { position: relative; background: var(--blue); border-radius: 18px; overflow: hidden; isolation: isolate; aspect-ratio: 16 / 10; }
.duo img { display: block; width: 100%; height: 100%; object-fit: cover; mix-blend-mode: luminosity; filter: grayscale(1) contrast(1.08) brightness(1.08); }
.use h3 { margin: 20px 0 8px; font-size: 24px; line-height: 1.2; font-stretch: 115%; font-weight: 800; letter-spacing: -0.02em; }
.use p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--steel); }
.rules { list-style: none; margin: 0; padding: 0; display: grid; gap: 28px; }
.rule { border-top: 3px solid var(--ink); padding-top: 18px; }
.rule h3 { margin: 0 0 6px; font-size: 21px; line-height: 1.25; font-stretch: 112%; font-weight: 800; letter-spacing: -0.015em; }
.rule p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--steel); }
.langs { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.lang { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "code name" "text text"; align-items: center; gap: 10px 14px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.lang-code { grid-area: code; display: inline-grid; place-items: center; height: 32px; min-width: 48px; padding: 0 12px; border-radius: 999px; background: var(--ink); color: #FFFFFF; font-size: 14px; font-weight: 800; }
.lang-name { grid-area: name; font-size: 14px; font-weight: 650; color: var(--steel); }
.lang p { grid-area: text; margin: 0; font-size: 19px; line-height: 1.4; font-weight: 650; letter-spacing: -0.005em; }
.lang:first-child .lang-code { background: var(--blue); }
.langs-foot { margin: 20px 0 0; font-size: 15px; color: var(--steel); }
@media (min-width: 720px) {
  .lang { grid-template-columns: 72px minmax(0, 1fr) 120px; grid-template-areas: "code text name"; gap: 24px; padding: 24px 0; }
  .lang p { font-size: 22px; }
  .lang-name { text-align: right; }
}
.close { position: relative; background: var(--blue); color: #FFFFFF; overflow: hidden; isolation: isolate; padding: 80px 0; }
.close-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; mix-blend-mode: luminosity; opacity: 0.24; filter: grayscale(1) contrast(1.2); z-index: -1; }
.close h2 { margin: 0; font-size: 36px; line-height: 1.04; max-width: 900px; text-wrap: balance; }
.close p { margin: 18px 0 28px; font-size: 19px; line-height: 1.55; color: rgba(255,255,255,0.9); max-width: 620px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px rgba(255,184,28,0.28); flex: none; }
@media (min-width: 720px) {
  .hero-body { padding: 56px 0 88px; }
  .hero-h { font-size: 56px; }
  .brief-body { padding: 26px 28px 8px; }
  .brief-top, .brief-foot { padding-left: 28px; padding-right: 28px; }
  .brief-title { font-size: 30px; }
  .sec { padding: 88px 0; }
  .sh h2 { font-size: 44px; }
  .part { grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 4fr); align-items: start; }
  .uses { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
  .rules { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .feed-note { padding: 28px; }
  .close { padding: 96px 0; }
  .close h2 { font-size: 52px; }
}
@media (min-width: 1040px) {
  .hero-body { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; }
  .hero-h { font-size: 60px; line-height: 0.98; }
  .sh { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); align-items: end; gap: 48px; margin-bottom: 44px; }
  .sh h2 { font-size: 50px; }
  .feed-grid { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 40px; }
  .rules { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .close h2 { font-size: 60px; }
}