/* CoStaff — shared site chrome (single source of truth).
   Banner + floating pill nav (mega-menu) + footer, injected by /assets/site.js.
   Namespaced classes (cs-* / csnav-* / csfoot-*) so no legacy per-page .nav-* CSS
   can ever collide. Tokens use var(--x, fallback) so the chrome is self-sufficient
   yet inherits each page's brand tokens when present. */

/* ============ Coming-soon banner ============ */
.cs-banner { position:fixed; top:0; left:0; right:0; z-index:110; height:36px; box-sizing:border-box;
  background:var(--accent-2,#4a6741); color:#fff; display:flex; align-items:center; justify-content:center;
  gap:14px; font-size:13px; padding:0 16px; font-family:var(--sans,'Inter',system-ui,sans-serif); }
.cs-banner .cs-label { font-weight:500; letter-spacing:0.04em; }
.cs-banner .cs-sub { opacity:0.82; }
.cs-banner a { color:#fff; text-decoration:underline; font-weight:500; transition:opacity 0.2s; }
.cs-banner a:hover { opacity:0.8; }

/* ============ Floating pill nav ============ */
.csnav { position:fixed; top:48px; left:0; right:0; margin:0 auto; transform:none; width:min(calc(100% - 32px),1060px);
  z-index:100; box-sizing:border-box; display:flex; align-items:center; justify-content:space-between;
  padding:0 12px 0 24px; height:56px; background:rgba(250,249,247,0.9);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--border,#e4e2de); border-radius:14px; box-shadow:0 12px 40px rgba(26,25,23,0.08);
  font-family:var(--sans,'Inter',system-ui,sans-serif); }
.csnav-logo { font-family:var(--serif,'Noto Serif JP',Georgia,serif); font-weight:400; font-size:17px;
  letter-spacing:0.04em; color:var(--ink,#1a1917); text-decoration:none; white-space:nowrap; }
.csnav-logo span { color:var(--accent-2,#4a6741); }
.csnav-mark { width:22px; height:22px; vertical-align:-5px; margin-right:8px; }
.csnav-links { display:flex; gap:24px; align-items:center; }
.csnav-links > a { font-size:13px; color:var(--ink-2,#5a5855); text-decoration:none; transition:color 0.2s; white-space:nowrap; }
.csnav-links > a:hover, .csnav-links > a.is-active { color:var(--ink,#1a1917); }
.csnav-links > a.is-active { font-weight:500; }
.csnav-home { display:none; }

/* dropdown trigger */
.csnav-item { position:static; }
.csnav-ddbtn { display:flex; align-items:center; gap:5px; background:none; border:none; cursor:pointer;
  font-family:inherit; font-size:13px; color:var(--ink-2,#5a5855); padding:0; transition:color 0.2s; white-space:nowrap; }
.csnav-ddbtn:hover, .csnav-item.is-open .csnav-ddbtn, .csnav-item.is-active .csnav-ddbtn { color:var(--ink,#1a1917); }
.csnav-item.is-active .csnav-ddbtn { font-weight:500; }
.csnav-caret { transition:transform 0.2s; flex-shrink:0; }
.csnav-item.is-open .csnav-caret { transform:rotate(180deg); }

/* dropdown panel — centered on the page (Wren-style) */
.csnav-dd { position:fixed; top:calc(100% + 12px); left:50%; transform:translateX(-50%) translateY(6px);
  min-width:280px; max-width:calc(100vw - 24px);
  background:rgba(250,249,247,0.99); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--border,#e4e2de); border-radius:14px; box-shadow:0 26px 70px rgba(26,25,23,0.18);
  padding:18px; opacity:0; visibility:hidden;
  transition:opacity 0.18s ease, transform 0.18s ease, visibility 0.18s; z-index:101; }
.csnav-dd::before { content:''; position:absolute; top:-20px; left:-180px; right:-180px; height:24px; } /* wide hover bridge */
.csnav-item.is-open .csnav-dd { opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); }

/* mega-menu grid: columns of stacked groups */
.csnav-dd--mega { display:grid; gap:6px 34px; padding:24px 26px; }
.csnav-dd--2 { grid-template-columns:repeat(2,minmax(238px,1fr)); }
.csnav-dd--3 { grid-template-columns:repeat(3,minmax(210px,1fr)); }
.csnav-col { display:flex; flex-direction:column; gap:22px; min-width:0; }
.csnav-group { display:flex; flex-direction:column; }
.csnav-head { font-family:var(--mono,'JetBrains Mono',monospace); font-size:10.5px; letter-spacing:0.14em;
  text-transform:uppercase; color:var(--accent-2,#4a6741); padding:0 12px 9px; }

.csnav-dd a, .csnav-soon { display:block; padding:9px 12px; border-radius:9px; text-decoration:none; }
.csnav-dd a { transition:background 0.15s; }
.csnav-dd a:hover { background:var(--bg-alt,#f3f2ef); }
.csnav-dd a strong, .csnav-soon strong { display:block; font-size:13.5px; font-weight:500; color:var(--ink,#1a1917); margin-bottom:3px; }
.csnav-dd a span, .csnav-soon span { display:block; font-size:11.5px; color:var(--ink-3,#9a9895); line-height:1.55; }
.csnav-soon { opacity:0.55; cursor:default; }

/* right cluster */
.csnav-right { display:flex; gap:12px; align-items:center; }
.csnav-lang { font-size:12px; color:var(--ink-3,#9a9895); text-decoration:none; border:1px solid var(--border,#e4e2de);
  padding:4px 10px; border-radius:3px; transition:all 0.2s; }
.csnav-lang:hover { color:var(--ink,#1a1917); border-color:var(--ink-3,#9a9895); }
.csnav-gh { display:flex; align-items:center; gap:6px; font-size:13px; color:var(--ink,#1a1917); text-decoration:none;
  border:1px solid var(--border,#e4e2de); padding:5px 14px; border-radius:4px; transition:all 0.2s; white-space:nowrap; }
.csnav-gh:hover { background:var(--bg-alt,#f3f2ef); }
.csnav-cta { background:var(--accent,#2d3a2e); color:#fff !important; font-size:12.5px; padding:8px 18px;
  border-radius:999px; text-decoration:none; transition:background 0.2s; white-space:nowrap; }
.csnav-cta:hover { background:var(--accent-2,#4a6741); }

/* hamburger */
.csnav-toggle { display:none; background:none; border:none; cursor:pointer; width:40px; height:40px; padding:8px;
  flex-direction:column; align-items:center; justify-content:center; gap:5px; }
.csnav-toggle .csnav-bar { display:block; width:22px; height:2px; background:var(--ink,#1a1917);
  transition:transform 0.25s ease, opacity 0.2s ease; }
.csnav-toggle[aria-expanded="true"] .csnav-bar:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.csnav-toggle[aria-expanded="true"] .csnav-bar:nth-child(2) { opacity:0; }
.csnav-toggle[aria-expanded="true"] .csnav-bar:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ============ Footer ============ */
.csfoot { background:var(--bg,#faf9f7); border-top:1px solid var(--border,#e4e2de); padding:40px 24px;
  font-family:var(--sans,'Inter',system-ui,sans-serif); }
.csfoot-inner { max-width:960px; margin:0 auto; display:flex; align-items:center; justify-content:space-between;
  gap:16px; flex-wrap:wrap; }
.csfoot-logo { font-family:var(--serif,'Noto Serif JP',Georgia,serif); font-size:16px; color:var(--ink,#1a1917); }
.csfoot-logo span { color:var(--accent-2,#4a6741); }
.csfoot-mark { width:20px; height:20px; vertical-align:-4px; margin-right:8px; }
.csfoot-text { font-size:12px; color:var(--ink-3,#9a9895); }
.csfoot-links { display:flex; gap:24px; flex-wrap:wrap; }
.csfoot-links a { font-size:12px; color:var(--ink-2,#5a5855); text-decoration:none; transition:color 0.2s; }
.csfoot-links a:hover { color:var(--ink,#1a1917); }

/* ============ Shared content pages — full-width sectioned bands (homepage-style) ============ */
/* hero / page-header */
.cs-hero { padding:150px 24px 66px; text-align:center; border-bottom:1px solid var(--border,#e4e2de);
  font-family:var(--sans,'Inter',system-ui,sans-serif); }
.cs-hero-inner { max-width:720px; margin:0 auto; }
.cs-tag { display:inline-block; font-family:var(--mono,'JetBrains Mono',monospace); font-size:10px;
  letter-spacing:0.14em; text-transform:uppercase; color:var(--accent-2,#4a6741);
  border:1px solid var(--border,#e4e2de); border-radius:999px; padding:5px 13px; margin-bottom:20px; }
.cs-hero-label { font-family:var(--mono,'JetBrains Mono',monospace); font-size:11px; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--ink-3,#9a9895); margin-bottom:20px;
  display:flex; align-items:center; justify-content:center; gap:12px; }
.cs-hero-label::before, .cs-hero-label::after { content:''; display:block; width:32px; height:1px; background:var(--border,#e4e2de); }
.cs-hero-title { font-family:var(--serif,'Noto Serif JP',Georgia,serif); font-weight:300;
  font-size:clamp(32px,5vw,52px); line-height:1.16; color:var(--ink,#1a1917); margin-bottom:18px; }
.cs-hero-title span { color:var(--accent-2,#4a6741); }
.cs-hero-desc { font-size:16px; color:var(--ink-2,#5a5855); max-width:600px; margin:0 auto; line-height:1.85; }
/* full-width section band */
.cs-band { padding:76px 24px; }
.cs-band--alt { background:var(--bg-alt,#f3f2ef); }
.cs-band-inner { max-width:1000px; margin:0 auto; }
.cs-band-head { margin-bottom:42px; max-width:620px; }
.cs-band-num { font-family:var(--mono,'JetBrains Mono',monospace); font-size:11px; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--ink-3,#9a9895); margin-bottom:16px; display:flex; align-items:center; gap:12px; }
.cs-band-num::after { content:''; display:block; width:40px; height:1px; background:var(--border,#e4e2de); }
.cs-band-title { font-family:var(--serif,'Noto Serif JP',Georgia,serif); font-weight:400;
  font-size:clamp(24px,3.4vw,34px); line-height:1.25; color:var(--ink,#1a1917); margin-bottom:14px; }
.cs-band-desc { font-size:15px; color:var(--ink-2,#5a5855); line-height:1.85; }
.cs-band-text { font-size:16px; color:var(--ink-2,#5a5855); line-height:1.9; max-width:760px; }
.cs-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(238px,1fr)); gap:16px; }
.cs-card { border:1px solid var(--border,#e4e2de); border-radius:12px; background:#fff; padding:26px 24px; }
.cs-card h3 { font-size:15px; font-weight:600; color:var(--ink,#1a1917); margin:0 0 8px; }
.cs-card p { font-size:13.5px; color:var(--ink-2,#5a5855); line-height:1.7; margin:0; }
.cs-btn-row { display:flex; gap:12px; flex-wrap:wrap; margin-top:36px; }
.cs-btn { font-size:14px; padding:13px 26px; border-radius:5px; text-decoration:none; transition:all 0.2s; display:inline-block; }
.cs-btn.primary { background:var(--accent,#2d3a2e); color:#fff; }
.cs-btn.primary:hover { background:var(--accent-2,#4a6741); }
.cs-btn.ghost { background:transparent; color:var(--ink,#1a1917); border:1px solid var(--border,#e4e2de); }
.cs-btn.ghost:hover { border-color:var(--ink-3,#9a9895); background:var(--bg-alt,#f3f2ef); }
/* pricing plans */
.cs-plans { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.cs-plan { border:1px solid var(--border,#e4e2de); border-radius:10px; overflow:hidden; background:#fff; display:flex; flex-direction:column; }
.cs-plan.featured { border-color:var(--accent-2,#4a6741); }
.cs-plan-head { padding:26px 28px; border-bottom:1px solid var(--border,#e4e2de); }
.cs-plan.featured .cs-plan-head { background:var(--accent,#2d3a2e); }
.cs-plan-name { font-family:var(--serif,'Noto Serif JP',Georgia,serif); font-size:22px; color:var(--ink,#1a1917); }
.cs-plan.featured .cs-plan-name { color:#fff; }
.cs-plan-tag { font-size:13px; color:var(--ink-3,#9a9895); margin-top:4px; }
.cs-plan.featured .cs-plan-tag { color:rgba(255,255,255,0.7); }
.cs-plan-body { padding:26px 28px; display:flex; flex-direction:column; flex:1; }
.cs-plan-list { list-style:none; margin:0 0 24px; padding:0; display:flex; flex-direction:column; gap:10px; }
.cs-plan-list li { font-size:13.5px; color:var(--ink-2,#5a5855); padding-left:20px; position:relative; line-height:1.5; }
.cs-plan-list li::before { content:'—'; position:absolute; left:0; color:var(--accent-2,#4a6741); }
.cs-plan .cs-btn { margin-top:auto; text-align:center; }
/* partner logos */
.cs-partners-row { display:flex; flex-wrap:wrap; gap:48px; align-items:center; }
.cs-partner { display:inline-flex; }
.cs-partner img { max-height:52px; width:auto; opacity:0.82; transition:opacity 0.2s; }
.cs-partner:hover img { opacity:1; }
.cs-muted { color:var(--ink-3,#9a9895); font-size:13.5px; margin-top:14px; }

/* ============ Mobile ============ */
@media (max-width:720px) {
  .cs-hero { padding:122px 20px 46px; }
  .cs-band { padding:52px 20px; }
  .cs-band-head { margin-bottom:30px; }
  .cs-plans { grid-template-columns:1fr; }
  .cs-banner { font-size:11px; gap:8px; }
  .cs-banner .cs-sub { display:none; }
  .csnav { top:36px; left:0; transform:none; width:100%; border-radius:0;
    border-left:none; border-right:none; border-top:none; box-shadow:none; padding:0 12px 0 20px; height:60px; }
  .csnav-toggle { display:flex; }
  .csnav-gh, .csnav-cta { display:none; }
  .csnav-links {
    display:none; position:fixed; top:96px; left:0; right:0; flex-direction:column; align-items:stretch; gap:0;
    background:rgba(250,249,247,0.98); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border,#e4e2de); padding:8px 20px 16px;
    max-height:calc(100vh - 96px); overflow-y:auto; }
  .csnav-links.is-open { display:flex; }
  .csnav-links > a { padding:14px 0; font-size:15px; border-bottom:1px solid var(--border,#e4e2de); }
  .csnav-home { display:block; }
  .csnav-item { width:100%; position:static; }
  .csnav-ddbtn { width:100%; padding:14px 0 4px; font-size:11px; letter-spacing:0.12em; text-transform:uppercase;
    color:var(--ink-3,#9a9895); pointer-events:none; }
  .csnav-caret { display:none; }
  .csnav-dd { position:static; transform:none; opacity:1; visibility:visible; min-width:0; max-width:none;
    background:none; border:none; box-shadow:none; padding:0; backdrop-filter:none; -webkit-backdrop-filter:none; }
  .csnav-dd--mega { display:block; padding:0; gap:0; }
  .csnav-col { gap:0; }
  .csnav-group { margin-bottom:2px; }
  .csnav-head { display:block; padding:12px 0 2px 14px; font-size:10px; }
  .csnav-dd::before { display:none; }
  .csnav-dd a, .csnav-soon { padding:12px 0 12px 14px; border-radius:0; border-bottom:1px solid var(--border,#e4e2de); }
  .csnav-dd a strong, .csnav-soon strong { font-size:15px; font-weight:400; margin-bottom:0; }
  .csnav-dd a span, .csnav-soon span { display:none; }
  .csfoot-inner { flex-direction:column; gap:16px; text-align:center; }
  .csfoot-links { justify-content:center; }
}