/* PBIRD-UI-001: V3.c shell only. No homepage animation or admin styles. */
.pbird-blog-v3c {
  --cream: #fff9eb; --mint: #b9e5d9; --green: #9bcb8a; --yellow: #ffd53d;
  --ink: #273447; --ink-soft: #34445a; --muted: #4e6170;
  --text: var(--ink); --text-muted: var(--muted); --green-dark: #3e697a;
  --green-darker: var(--ink); --bg-soft: #e8f2e9;
  --border: rgba(39,52,71,.18); --radius: 20px; --shadow: 0 8px 24px rgba(39,52,71,.06);
  margin: 0; background: var(--cream); color: var(--ink);
  font-family: 'DM Sans','Noto Sans TC',sans-serif; font-size: 20px; line-height: 1.72;
}
.pbird-blog-v3c *, .pbird-blog-v3c *::before, .pbird-blog-v3c *::after { box-sizing: border-box; }
.pbird-blog-v3c a { text-underline-offset: .2em; }
.pbird-blog-v3c :focus-visible { outline: 3px solid #3e697a; outline-offset: 4px; }
.pbird-blog-v3c ::selection { background: var(--yellow); color: var(--ink); }
.pbird-blog-container, .pbird-blog-v3c .container { width: min(1400px, calc(100% - 64px)); margin-inline: auto; }
.pbird-blog-skip { position: fixed; top: 8px; left: 16px; z-index: 100; padding: 10px 16px; border-radius: 12px; background: var(--yellow); color: var(--ink); transform: translateY(-200%); }
.pbird-blog-skip:focus { transform: none; }
.pbird-blog-header { height: 82px; background: var(--cream); border-bottom: 1px solid rgba(39,52,71,.12); position: sticky; top: 0; z-index: 20; }
.pbird-blog-nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.pbird-blog-brand { display: block; line-height: 1; text-decoration: none; flex-shrink: 0; }
.pbird-blog-wordmark { display: block; width: 174px; }
.pbird-blog-wordmark img { display: block; width: 100%; height: auto; }
.pbird-blog-nav { display: flex; align-items: center; gap: 29px; }
.pbird-blog-nav > a { color: var(--ink); font-size: 20px; font-weight: 700; text-decoration: none; white-space: nowrap; transition: color .2s; }
.pbird-blog-nav > a:hover { color: #39744a; }
.pbird-blog-nav > .is-current { text-decoration: underline; text-decoration-color: var(--green); text-decoration-thickness: 3px; text-underline-offset: 8px; }
.pbird-blog-nav .pbird-blog-nav-cta { background: var(--ink); border-radius: 100px; color: var(--yellow); padding: 11px 18px; }
.pbird-blog-nav .pbird-blog-nav-cta:hover { background: var(--ink-soft); color: var(--yellow); }
.pbird-blog-nav-cta span { margin-left: 7px; }
.pbird-blog-menu-toggle { display: none; }
.pbird-blog-v3c main { min-height: calc(100vh - 270px); }
.pbird-blog-v3c .blog-hero { background: linear-gradient(135deg,rgba(185,229,217,.46),var(--cream) 46%,rgba(155,203,138,.2)); padding: 64px 0 48px; border-bottom: 1px solid rgba(39,52,71,.08); }
.pbird-blog-v3c .blog-hero h1 { font-size: clamp(32px,4vw,48px); letter-spacing: -.04em; line-height: 1.25; }
.pbird-blog-v3c .blog-hero p { font-size: 18px; }
.pbird-blog-v3c .blog-tabs { gap: 10px; margin-top: 26px; }
.pbird-blog-v3c .blog-tabs a { color: var(--ink); font-size: 16px; min-height: 44px; display: inline-flex; align-items: center; padding: 9px 22px; background: rgba(255,255,255,.72); }
.pbird-blog-v3c .blog-tabs a.active, .pbird-blog-v3c .blog-tabs a:hover { background: var(--green); border-color: var(--green); color: var(--ink); }
.pbird-blog-v3c main > section:not(.blog-hero) { padding-block: 44px 72px; }
.pbird-blog-v3c .blog-post-list { gap: 24px; }
.pbird-blog-v3c .blog-post-card { border-color: rgba(39,52,71,.14); padding: 30px; }
.pbird-blog-v3c .blog-post-card:hover { box-shadow: 0 16px 32px rgba(39,52,71,.1); }
.pbird-blog-v3c .blog-post-card .badge, .pbird-blog-v3c .blog-article > .badge { background: var(--mint); color: var(--ink); font-size: 14px; }
.pbird-blog-v3c .blog-post-card .title { font-size: 24px; line-height: 1.45; }
.pbird-blog-v3c .blog-post-card .meta { font-size: 14px; }
.pbird-blog-v3c .blog-post-card .excerpt { font-size: 17px; line-height: 1.75; }
.pbird-blog-v3c .blog-article { max-width: 820px; padding: 52px 32px 76px; }
.pbird-blog-v3c .blog-article h1 { font-size: clamp(28px,3.1vw,40px); letter-spacing: -.025em; line-height: 1.4; }
.pbird-blog-v3c .blog-article .back-link { color: #3e697a; font-size: 16px; }
.pbird-blog-v3c .blog-article .meta { font-size: 15px; }
.pbird-blog-v3c .blog-article .content { font-size: 18px; color: var(--ink); line-height: 1.9; overflow-wrap: break-word; }
.pbird-blog-v3c .blog-article .content h2 { font-size: 28px; }
.pbird-blog-v3c .blog-article .content h3 { font-size: 23px; }
.pbird-blog-v3c .article-lead { font-size: 20px; }
.pbird-blog-v3c .article-summary { border-left-color: var(--green); }
.pbird-blog-v3c .blog-not-found { padding: 56px 0; font-size: 20px; }
.pbird-blog-footer { background: #34445a; color: var(--mint); padding: 30px 0; }
.pbird-blog-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.pbird-blog-brand-dark .pbird-blog-wordmark { width: 180px; }
.pbird-blog-footer p { font-size: 20px; margin: 0; }
.pbird-blog-back-top { font-size: 20px; color: var(--yellow); text-decoration: none; white-space: nowrap; }
/* Collapse before the seven full-size links collide with the wordmark. */
@media (max-width: 1180px) {
  .pbird-blog-menu-toggle { background: none; border: 0; display: block; height: 42px; width: 42px; padding: 0; color: var(--ink); cursor: pointer; }
  .pbird-blog-menu-toggle i { background: var(--ink); display: block; height: 2px; width: 25px; margin: 7px auto; border-radius: 999px; }
  .pbird-blog-menu-toggle::after { content: ''; background: var(--ink); display: block; height: 2px; width: 25px; margin: 7px auto 0; border-radius: 999px; }
  .pbird-blog-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--cream); border-top: 1px solid rgba(39,52,71,.12); box-shadow: 0 12px 25px rgba(39,52,71,.09); padding: 12px 24px 20px; max-height: calc(100dvh - 82px); overflow-y: auto; }
  .pbird-blog-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .pbird-blog-nav > a { padding: 12px 4px; min-height: 48px; }
  .pbird-blog-nav .pbird-blog-nav-cta { text-align: center; margin-top: 8px; }
  .pbird-blog-footer-inner { flex-wrap: wrap; }
}
@media (max-width: 760px) {
  .pbird-blog-header { height: 70px; }
  .pbird-blog-container, .pbird-blog-v3c .container { width: calc(100% - 36px); }
  .pbird-blog-brand-primary .pbird-blog-wordmark { background: rgba(255,253,244,.92) url('/C-assets/PBird_V3/assets/brand/bird-mark-hero-no-ring.png') center / 78% auto no-repeat; border: 2px solid rgba(39,52,71,.72); border-radius: 50%; box-shadow: 0 2px 0 rgba(39,52,71,.12),inset 0 0 0 3px rgba(255,255,255,.72); width: 48px; height: 48px; }
  .pbird-blog-brand-primary .pbird-blog-wordmark img { display: none; }
  .pbird-blog-nav { max-height: calc(100dvh - 70px); }
  .pbird-blog-v3c .blog-hero { padding: 38px 0 32px; }
  .pbird-blog-v3c .blog-hero h1 { font-size: 32px; }
  .pbird-blog-v3c .blog-hero p { font-size: 16px; }
  .pbird-blog-v3c .blog-tabs a { padding-inline: 18px; }
  .pbird-blog-v3c main > section:not(.blog-hero) { padding-block: 28px 44px; }
  .pbird-blog-v3c .blog-post-card { padding: 22px; }
  .pbird-blog-v3c .blog-post-card .title { font-size: 22px; }
  .pbird-blog-v3c .blog-article { padding: 32px 18px 48px; }
  .pbird-blog-v3c .blog-article h1 { font-size: 28px; }
  .pbird-blog-v3c .blog-article .content { font-size: 17px; }
  .pbird-blog-v3c .blog-article .content h2 { font-size: 25px; }
  .pbird-blog-v3c .blog-article .content h3 { font-size: 21px; }
  .pbird-blog-footer-inner { align-items: flex-start; flex-direction: column; gap: 18px; }
  .pbird-blog-footer p { font-size: 16px; order: 3; }
  .pbird-blog-back-top { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) { .pbird-blog-v3c *, .pbird-blog-v3c *::before, .pbird-blog-v3c *::after { transition: none !important; scroll-behavior: auto !important; } }