/* Public pages: always the brand's "family dark" look (aifans.fan colours on deep navy), whatever the OS theme. */
.landing {
  --bg: #0b1020; --surface: #121933; --surface-2: #18213f;
  --text: #e8ecff; --muted: #9aa3c7; --line: #232c4b;
  --accent: #22d3ee; --accent-strong: #67e8f9; --accent-soft: #0e3340; --on-accent: #062b33;
  --ok: #6ee7b7; --ok-soft: rgba(110, 231, 183, .12);
  --warn: #fbbf24; --warn-soft: rgba(251, 191, 36, .12); --warn-line: rgba(251, 191, 36, .3);
  color-scheme: dark;
  background: var(--bg);
}
.landing .wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.landing a { text-underline-offset: 3px; }
.landing .card { background: var(--surface); border-color: var(--line); }

.top { position: sticky; top: 0; z-index: 5; background: rgba(11, 16, 32, .82); backdrop-filter: blur(10px);
       border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 62px; }
.top .logo { text-decoration: none; color: var(--text); font-size: 17px; }
.top nav { display: flex; gap: 22px; flex: 1; overflow-x: auto; white-space: nowrap; }
.top nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.top nav a:hover { color: var(--text); }
.top .actions { display: flex; gap: 8px; }
.top .btn { text-decoration: none; }
.landing .btn { background: transparent; border-color: var(--line); color: var(--text); }
.landing .btn:hover { background: var(--surface-2); }
.landing .btn.ghost { border-color: transparent; }
.landing .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.landing .btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

.hero { padding: 96px 0 64px; text-align: center; background:
        radial-gradient(ellipse 60% 55% at 50% 0%, rgba(59, 91, 255, .32), transparent 70%),
        radial-gradient(ellipse 40% 40% at 85% 30%, rgba(139, 92, 246, .18), transparent 70%),
        radial-gradient(ellipse 35% 35% at 12% 40%, rgba(34, 211, 238, .10), transparent 70%); }
.hero .eyebrow { display: inline-block; margin: 0 0 22px; padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px;
                 font-size: 13px; color: var(--muted); background: rgba(18, 25, 51, .6); }
.hero h1 { font-size: 58px; line-height: 1.08; letter-spacing: -1px; margin: 0 0 20px; }
.grad { background: linear-gradient(90deg, #3b5bff, #8b5cf6 55%, #22d3ee); -webkit-background-clip: text; background-clip: text;
        color: transparent; }
.hero .lead { font-size: 18px; color: var(--muted); max-width: 36em; margin: 0 auto 30px; }
.hero .cta { justify-content: center; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn.big { height: 48px; padding: 0 28px; font-size: 16px; text-decoration: none; border-radius: 10px; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; max-width: 760px; margin: 52px auto 0; }
.stat { padding: 16px 10px; border: 1px solid var(--line); border-radius: 12px; background: rgba(18, 25, 51, .55); }
.stat b { display: block; font-size: 30px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 13px; }

.landing section { padding: 64px 0; }
.landing section + section { border-top: 1px solid var(--line); }
.landing h2 { font-size: 28px; letter-spacing: -.3px; margin-bottom: 18px; }
.landing .muted { margin: 0 0 14px; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.sec-head h2 { margin-bottom: 8px; }
.sec-head .more { color: var(--accent); text-decoration: none; font-weight: 500; white-space: nowrap; margin-bottom: 14px; }

.mgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.mcard { display: flex; flex-direction: column; gap: 6px; padding: 18px; text-decoration: none; color: inherit;
         transition: border-color .15s, transform .15s; }
.mcard:hover { border-color: var(--accent); transform: translateY(-2px); }
.mcard .mhead { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.mcard .fam { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; }
.mcard h3 { font-size: 18px; margin: 4px 0 0; color: var(--text); }
.mcard .mid { color: var(--muted); margin: 0; }
.mcard .sum { color: var(--muted); font-size: 13px; margin: 4px 0 0; display: -webkit-box; -webkit-line-clamp: 2;
              -webkit-box-orient: vertical; overflow: hidden; }
.mcard .mprice { display: flex; gap: 24px; margin-top: auto; padding-top: 12px; }
.mcard .mprice span { display: block; font-size: 12px; color: var(--muted); }
.mcard .mprice b { font-size: 17px; font-variant-numeric: tabular-nums; }
.mcard .off { margin: 0; font-size: 12px; color: var(--accent); }

.grid4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feat { padding: 20px; }
.feat h3 { font-size: 16px; margin-bottom: 8px; }
.feat p { margin: 0; color: var(--muted); }

.steps3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.step { position: relative; padding: 22px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.step .n { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; margin-bottom: 12px;
           font-weight: 700; color: #fff; background: linear-gradient(135deg, #3b5bff, #8b5cf6); }
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); overflow-wrap: anywhere; }

.duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 16px; }
.duo .code { height: calc(100% - 26px); }
.code-label { font-size: 12px; color: var(--muted); margin: 0 0 6px; font-family: var(--mono); }
.landing pre.code { font-size: 13px; border: 1px solid var(--line); background: #070b17; }

.notes { color: var(--muted); padding-left: 20px; margin: 14px 0 0; }
.notes li { margin: 4px 0; }
.facts { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 10px 16px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

.cta-band { text-align: center; background: radial-gradient(ellipse 50% 80% at 50% 100%, rgba(59, 91, 255, .22), transparent 70%); }
.cta-band .cta { justify-content: center; margin-top: 18px; }

.landing footer { border-top: 1px solid var(--line); background: #070b17; padding: 28px 0 36px; color: var(--muted); font-size: 13px; }
.landing footer .wrap { text-align: center; }
.landing footer .family { margin: 0 0 10px; }
.landing footer .links { display: flex; flex-wrap: wrap; gap: 6px 12px; justify-content: center; }
.landing footer a { color: var(--muted); }
.landing footer .family a { color: var(--text); }

@media (max-width: 900px) {
  .grid4, .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid3, .mgrid, .steps3, .duo { grid-template-columns: minmax(0, 1fr); }
  .hero { padding: 60px 0 46px; }
  .hero h1 { font-size: 38px; letter-spacing: -.5px; }
  .top .wrap { gap: 12px; }
  .top nav { display: none; }
  .top .actions { margin-left: auto; }
  .top .btn.ghost { display: none; }
}
@media (max-width: 560px) {
  .grid4 { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { font-size: 32px; }
  .stat b { font-size: 24px; }
  .facts { grid-template-columns: minmax(0, 1fr); gap: 2px 0; }
  .facts dd { margin-bottom: 10px; }
  .landing section { padding: 44px 0; }
}

/* savings badge, model / guide cards, articles */
.landing table a.mono { color: var(--text); text-decoration: none; }
.landing table a.mono:hover { text-decoration: underline; }
.landing h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; }
.landing h2 + .code, .landing h3 + .code { margin-top: 8px; }
.landing .code { margin: 12px 0; }
.landing .save { background: rgba(34, 211, 238, .12); color: #67e8f9; }
.model-card { display: block; text-decoration: none; color: inherit; transition: border-color .15s, transform .15s; }
.model-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.model-card h3 { color: var(--text); }
.model-card .price { color: var(--text); margin-top: 10px; }
.model-card p + p { margin-top: 6px; }
.crumb { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.crumb a { color: var(--muted); }
.lead-sm { font-size: 16px; color: var(--muted); max-width: 46em; margin: 0 0 12px; }
.article { max-width: 780px; }
.article h2 { font-size: 20px; margin: 28px 0 10px; }
.article p, .article li { line-height: 1.75; }
.article .facts { margin: 14px 0; }
.landing section .cta { margin-top: 22px; }
.landing .grid3 { margin-top: 6px; }
@media (max-width: 900px) { .landing h1 { font-size: 28px; } }
.landing .hero h1 { font-size: 58px; }
@media (max-width: 900px) { .landing .hero h1 { font-size: 38px; } }
@media (max-width: 560px) { .landing .hero h1 { font-size: 32px; } }

/* welcome voucher / invite-a-friend line under the hero */
.promo { margin: 18px 0 0; font-size: 14px; color: var(--muted); }
.promo b { color: var(--accent-strong); }
.promo a { color: inherit; }

/* peak hours by time zone (peakhours.py + peak.js) */
.landing table.peak-hours td:first-child { white-space: nowrap; }
.landing table.peak-hours tr.you td { background: var(--accent-soft); }
.landing .muted.small { font-size: 13px; }
@media (max-width: 640px) {
  .landing table.peak-hours td, .landing table.peak-hours th { white-space: normal; padding: 10px 12px; }
  .landing table.peak-hours td:first-child { white-space: normal; width: 38%; }
}

/* announcement pill above the hero, guide setup card, table of contents, copy buttons (synced from the domestic edition 2026-10-16) */
.announce { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; padding: 6px 14px 6px 6px; border-radius: 999px;
  border: 1px solid var(--line); color: inherit; text-decoration: none; font-size: 14px; max-width: 100%; background: var(--surface); }
.announce span { background: linear-gradient(90deg, #3b5bff, #8b5cf6); color: #fff; border-radius: 999px; padding: 2px 10px; font-size: 12px; flex: none; }
.announce:hover { border-color: var(--accent); }
.article h3 { font-size: 16px; margin: 18px 0 6px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 12px 0 8px; }
.article .grid2 .card h3 { margin-top: 0; }
@media (max-width: 720px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
.setup { margin: 0 0 18px; padding: 16px 18px; }
.setup .setup-title { font-weight: 600; margin: 0 0 8px; }
.setup .facts { margin: 0; grid-template-columns: 220px minmax(0, 1fr); }
@media (max-width: 720px) { .setup .facts { grid-template-columns: minmax(0, 1fr); } }
.toc { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; margin: 0 0 8px; padding: 10px 14px;
  border-left: 3px solid var(--accent); background: var(--surface-2); border-radius: 6px; font-size: 14px; }
.toc a { color: inherit; }
.article h2[id] { scroll-margin-top: 72px; }
.copy-btn { position: absolute; top: 8px; right: 8px; font-size: 12px; padding: 2px 10px; border-radius: 6px; cursor: pointer;
  border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.08); color: #d6e2df; }
.copy-btn:hover { background: rgba(255,255,255,.18); }
.copy-btn.inline { position: static; margin-left: 6px; vertical-align: middle; border-color: var(--line); background: transparent; color: var(--muted); }

/* API docs: sticky table of contents beside the content */
.docs { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 18px; }
.docs-nav { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 2px; font-size: 14px;
  max-height: calc(100vh - 96px); overflow: auto; padding-right: 8px; border-right: 1px solid var(--line); }
.docs-nav b { margin: 0 0 6px; }
.docs-nav a { color: var(--muted, #667085); text-decoration: none; padding: 4px 8px; border-radius: 6px; }
.docs-nav a:hover { color: inherit; background: var(--surface-2, rgba(127,127,127,.08)); }
.docs-body { max-width: none; }
.doc-sec { scroll-margin-top: 72px; padding: 0; }
.doc-sec h2 { margin-top: 34px; }
.doc-sec td.mono, .doc-sec .mono { white-space: nowrap; }
@media (max-width: 900px) {
  .docs { grid-template-columns: minmax(0, 1fr); }
  .docs-nav { position: static; flex-direction: row; flex-wrap: wrap; gap: 4px 10px; max-height: none; border-right: 0;
    border-left: 3px solid var(--accent); padding: 8px 12px; background: var(--surface-2, rgba(127,127,127,.06)); border-radius: 6px; }
  .docs-nav b { width: 100%; }
  .docs-nav a { padding: 2px 0; }
}

/* Claude Code cost calculator (content_pages.guide_claude_code_cost + calc.js) */
.landing .calc { padding: 18px; }
.landing .calc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 16px; margin-bottom: 14px; }
.landing .calc-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.landing .calc-grid input { width: 100%; }
@media (max-width: 640px) { .landing .calc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }