/* UPPER — Pillar / topic-cluster hub pages (GEO/SAIO) */
:root {
  --upper-purple:      #6e56ff;
  --upper-purple-deep: #5543c6;
  --upper-purple-soft: #7b60ff;
  --upper-teal:        #00c9a0;
  --upper-navy:        #0b0f28;
  --upper-navy2:       #03041c;
  --blog-line:         #e6e8f2;
  --blog-muted:        #6b7280;
  --blog-muted2:       #8896b3;
  --blog-lightbg:      #f5f6fa;
}
.blog-page { min-height: 100vh; background: #fff; color: var(--light-text); display: flex; flex-direction: column; }

.blog-nav { background: var(--upper-navy); border-bottom: 1px solid rgba(255,255,255,0.06); position: sticky; top: 0; z-index: 100; }
.blog-nav-inner { max-width: 1180px; margin: 0 auto; padding: 0 24px; height: 64px; display: flex; align-items: center; gap: 20px; }
.blog-nav .logo-link { display: inline-flex; align-items: center; }
.blog-nav .logo-img { height: 30px; width: auto; display: block; }
.blog-nav-spacer { flex: 1; }
.blog-nav-links { display: flex; align-items: center; gap: 28px; }
.blog-nav-link { font-size: 14px; font-weight: 500; color: #c5cce0; text-decoration: none; transition: color var(--transition); }
.blog-nav-link:hover { color: #fff; }
.blog-nav-cta { font-size: 14px; font-weight: 600; color: #fff; background: var(--upper-purple); border: 0; border-radius: 10px; padding: 9px 18px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 7px; transition: all var(--transition); }
.blog-nav-cta:hover { background: var(--upper-purple-deep); transform: translateY(-1px); }
.blog-nav-cta .star { color: #fff; font-size: 13px; }

.pillar-main { flex: 1; }

/* Hero */
.pillar-hero { background: var(--upper-navy); color: #fff; position: relative; overflow: hidden; border-bottom: 1px solid rgba(255,255,255,0.06); }
.pillar-hero:after { content: ""; position: absolute; inset: 0; background: radial-gradient(900px 360px at 78% -8%, rgba(110,86,255,.45), transparent 60%), radial-gradient(640px 320px at 12% 120%, rgba(0,201,160,.22), transparent 60%); pointer-events: none; }
.pillar-hero-inner { max-width: 820px; margin: 0 auto; padding: 56px 24px 52px; position: relative; z-index: 1; }
.pillar-crumbs { font-size: 13px; color: #aeb8d0; margin-bottom: 18px; }
.pillar-crumbs a { color: var(--upper-purple-soft); text-decoration: none; font-weight: 600; }
.pillar-crumbs a:hover { color: #fff; }
.pillar-crumbs .sep { margin: 0 8px; color: #4a5274; }
.pillar-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--upper-purple-soft); margin-bottom: 14px; }
.pillar-kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--upper-teal); }
.pillar-hero h1 { font-size: clamp(30px, 4.6vw, 46px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 18px; color: #fff; }
.pillar-lede { font-size: 19px; line-height: 1.6; color: #cdd4e6; font-weight: 500; margin: 0; }

/* Body */
.pillar-body-wrap { max-width: 820px; margin: 0 auto; padding: 44px 24px 16px; }
.pillar-answer { padding: 22px 26px; background: linear-gradient(135deg, rgba(110,86,255,.07), rgba(0,201,160,.06)); border: 1px solid rgba(110,86,255,.18); border-left: 5px solid var(--upper-purple); border-radius: 0 14px 14px 0; margin-bottom: 34px; }
.pillar-answer .lbl { font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--upper-purple-deep); margin: 0 0 8px; }
.pillar-answer p { font-size: 18px; line-height: 1.55; font-weight: 600; color: #14172a; margin: 0; }
.pillar-prose { font-size: 17px; line-height: 1.72; color: #2a3042; }
.pillar-prose p { margin: 0 0 20px; }
.pillar-prose h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; margin: 38px 0 14px; color: #14172a; padding-left: 16px; border-left: 5px solid var(--upper-purple); }
.pillar-prose a { color: var(--upper-purple-deep); font-weight: 600; text-decoration: none; border-bottom: 1.5px solid rgba(110,86,255,.3); }
.pillar-prose a:hover { color: var(--upper-purple); border-bottom-color: var(--upper-purple); }
.pillar-prose strong { color: #14172a; }

/* Spoke list */
.pillar-spokes { max-width: 1080px; margin: 8px auto 0; padding: 0 24px 64px; }
.pillar-spokes h2 { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; margin: 30px 0 6px; color: #14172a; }
.pillar-spokes .sec-sub { font-size: 14px; color: var(--blog-muted); margin: 0 0 20px; }
.spoke-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.spoke-card { border: 1px solid var(--blog-line); border-radius: 16px; overflow: hidden; background: #fff; text-decoration: none; color: inherit; display: flex; flex-direction: column; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.spoke-card:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(110,86,255,.15); border-color: rgba(110,86,255,.35); }
.spoke-card .sc-bar { height: 6px; background: linear-gradient(90deg, var(--upper-purple), var(--upper-teal)); }
.spoke-card .sc-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.spoke-card .sc-cat { font-size: 10.5px; font-weight: 800; letter-spacing: .03em; text-transform: uppercase; color: var(--upper-purple-deep); margin-bottom: 8px; }
.spoke-card .sc-title { font-size: 16px; font-weight: 700; line-height: 1.32; color: #14172a; margin-bottom: 8px; }
.spoke-card .sc-ex { font-size: 13px; color: var(--blog-muted); line-height: 1.5; margin: 0 0 14px; flex: 1; }
.spoke-card .sc-meta { font-size: 12px; color: var(--blog-muted2); }

.pillar-cta { max-width: 820px; margin: 0 auto; padding: 0 24px 64px; }
.pillar-cta-inner { background: var(--upper-navy); border-radius: 20px; padding: 36px 40px; text-align: center; color: #fff; }
.pillar-cta-inner h3 { font-size: 24px; font-weight: 800; margin: 0 0 10px; }
.pillar-cta-inner p { color: #aeb8d0; font-size: 15px; margin: 0 0 20px; }
.pillar-cta-inner .btn { display: inline-flex; align-items: center; gap: 8px; background: var(--upper-purple); color: #fff; padding: 13px 24px; border-radius: 12px; text-decoration: none; font-weight: 700; transition: all var(--transition); }
.pillar-cta-inner .btn:hover { background: var(--upper-purple-deep); transform: translateY(-1px); }

/* Footer */
.blog-footer { background: var(--upper-navy2); color: #aeb8d0; padding: 40px 24px; text-align: center; }
.blog-footer-inner { max-width: 1180px; margin: 0 auto; }
.blog-footer-social { display: flex; justify-content: center; gap: 14px; margin-bottom: 18px; }
.blog-footer-social a { width: 38px; height: 38px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.06); color: #c5cce0; border: 1px solid rgba(255,255,255,0.1); transition: all var(--transition); }
.blog-footer-social a:hover { background: var(--upper-purple); color: #fff; border-color: var(--upper-purple); transform: translateY(-2px); }
.blog-footer-links { font-size: 13px; margin-bottom: 12px; }
.blog-footer-links a { color: #c5cce0; text-decoration: none; font-weight: 500; }
.blog-footer-links a:hover { color: #fff; text-decoration: underline; }
.blog-footer-links .sep { margin: 0 10px; color: #4a5274; }
.blog-footer-copy { font-size: 12px; color: #6b7494; }

.pillar-other { max-width: 1080px; margin: 0 auto; padding: 8px 24px 8px; }
.pillar-other h2 { font-size: 14px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--blog-muted); margin: 8px 0 16px; padding-top: 28px; border-top: 1px solid var(--blog-line); }
.pillar-other-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.po-card { border: 1px solid var(--blog-line); border-radius: 12px; padding: 16px 18px; text-decoration: none; color: inherit; background: #fff; transition: transform var(--transition), border-color var(--transition); }
.po-card:hover { transform: translateY(-2px); border-color: rgba(110,86,255,.35); }
.po-card .t { font-size: 14px; font-weight: 700; color: #14172a; }
.po-card .d { font-size: 12.5px; color: var(--blog-muted); margin-top: 4px; line-height: 1.45; }

@media (max-width: 900px) { .spoke-grid { grid-template-columns: repeat(2, 1fr); } .pillar-other-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .blog-nav-links { display: none; } .spoke-grid { grid-template-columns: 1fr; } }