/* Tuolima fiber schematic sheet: deep navy, fiber teal, signal amber */
* { box-sizing: border-box; }
html { font-size: 17px; }
body { margin: 0; font-family: "Inter", "Segoe UI", Helvetica, Arial, sans-serif; color: #16282f; background: #f4f8f8; line-height: 1.65; background-image: linear-gradient(#e6eeee 1px, transparent 1px), linear-gradient(90deg, #e6eeee 1px, transparent 1px); background-size: 48px 48px; }
a { color: #0e7c86; }
.site-header { background: #0f2a3d; color: #fff; border-bottom: 4px solid #e8a33d; }
.header-inner { max-width: 1160px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; flex-direction: column; text-decoration: none; color: #fff; line-height: 1.1; }
.brand-mark { font-family: "Space Grotesk", "Arial Narrow", sans-serif; font-size: 1.7rem; font-weight: 700; letter-spacing: 0.08em; }
.brand-tag { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: #bcd6d6; }
.main-nav { margin-left: auto; }
.nav { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a { display: block; padding: 10px 12px; color: #fff; text-decoration: none; font-weight: 600; font-size: 0.95rem; white-space: nowrap; }
.nav > li:focus-within > a { background: #1a3d52; }
.menu { display: none; position: absolute; left: 0; top: 100%; min-width: 260px; list-style: none; margin: 0; padding: 8px 0; background: #fff; border: 1px solid #d5e0e0; box-shadow: 0 8px 24px rgba(15,42,61,0.18); z-index: 50; }
.has-menu:focus-within .menu { display: block; }
.menu a { display: block; padding: 8px 16px; color: #16282f; text-decoration: none; font-size: 0.92rem; white-space: nowrap; }
.mobile-nav { display: none; }
.header-cta { white-space: nowrap; }
.btn { display: inline-block; background: #e8a33d; color: #0f2a3d; font-weight: 700; padding: 11px 20px; border-radius: 4px; text-decoration: none; border: 2px solid #e8a33d; }
.btn-small { padding: 7px 14px; font-size: 0.9rem; }
main.page, main.blog { max-width: 1160px; margin: 0 auto; padding: 8px 20px 48px; }
.hero { padding: 40px 0 24px; border-bottom: 2px solid #0f2a3d; }
.eyebrow { font-family: "IBM Plex Mono", Consolas, monospace; font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase; color: #0e7c86; margin: 0 0 10px; }
.hero h1, .block h2, .post-card h2 { font-family: "Space Grotesk", "Arial Narrow", sans-serif; color: #0f2a3d; line-height: 1.2; }
.hero h1 { font-size: 2.4rem; margin: 0 0 14px; }
.lead { font-size: 1.12rem; color: #33484f; max-width: 860px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 18px 0; }
.evidence { display: grid; min-width: 0; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 22px 0; }
.ev-cell { background: #fff; border: 1px solid #d5e0e0; border-top: 4px solid #0e7c86; padding: 12px; }
.ev-label { display: block; font-family: "IBM Plex Mono", Consolas, monospace; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: #5a6d72; }
.ev-fact { display: block; font-weight: 700; color: #0f2a3d; margin-top: 4px; font-size: 0.95rem; }
.motif-wrap { margin: 10px 0 0; }
.motif { width: 100%; max-width: 520px; height: auto; display: block; }
.block { background: #fff; border: 1px solid #d5e0e0; padding: 28px 30px; margin: 24px 0; }
.block h2 { font-size: 1.55rem; margin: 0 0 12px; padding-bottom: 10px; border-bottom: 1px solid #d5e0e0; }
.block ul { padding-left: 22px; }
.block li { margin: 6px 0; }
.card-grid { display: grid; min-width: 0; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 8px; }
.card { border: 1px solid #d5e0e0; border-top: 4px solid #e8a33d; padding: 20px; background: #fbfdfd; }
.card h3 { margin: 0 0 8px; font-family: "Space Grotesk", sans-serif; }
.card h3 a { color: #0f2a3d; text-decoration: none; }
.card p { margin: 0 0 14px; color: #33484f; }
.inquiry-panel { background: #0f2a3d; color: #fff; padding: 30px; margin: 24px 0; }
.inquiry-panel h2 { color: #fff; font-family: "Space Grotesk", sans-serif; margin: 0 0 10px; }
.inquiry-panel p { color: #cfe0e0; }
.inquiry { display: grid; min-width: 0; gap: 14px; max-width: 640px; }
.inquiry label { font-weight: 600; display: grid; gap: 6px; }
.inquiry input, .inquiry textarea { font: inherit; padding: 10px 12px; border: 1px solid #b9c9c9; border-radius: 4px; width: 100%; }
.inquiry button { justify-self: start; cursor: pointer; font: inherit; }
.botcheck { display: none; }
.post-list { display: grid; min-width: 0; gap: 16px; margin: 24px 0; }
.post-card { background: #fff; border: 1px solid #d5e0e0; padding: 22px 26px; }
.post-card h2 { margin: 0 0 8px; font-size: 1.35rem; }
.post-card h2 a { color: #0f2a3d; text-decoration: none; }
.post-card p { margin: 0; color: #33484f; }
.site-footer { background: #0f2a3d; color: #cfe0e0; margin-top: 24px; }
.footer-inner { min-width: 0; max-width: 1160px; margin: 0 auto; padding: 32px 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.foot-col h3 { color: #fff; font-family: "Space Grotesk", sans-serif; margin: 0 0 10px; }
.foot-col ul { list-style: none; padding: 0; margin: 0; }
.foot-col li { margin: 5px 0; }
.foot-col a { color: #e8c07a; }
.foot-base { max-width: 1160px; margin: 0 auto; padding: 0 20px 24px; font-size: 0.85rem; color: #9db8b8; }
@media (max-width: 1100px) {
  .header-inner { flex-wrap: wrap; }
  .main-nav { order: 3; width: 100%; margin-left: 0; }
  .nav { flex-wrap: wrap; }
  .evidence { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 1.8rem; }
  .block { padding: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .evidence { grid-template-columns: 1fr; }
  .footer-inner { min-width: 0; grid-template-columns: 1fr; }
  .main-nav .nav { display: none; }
  .hamburger { display: block; cursor: pointer; margin-left: auto; }
  .hamburger span { display: block; width: 26px; height: 3px; background: #fff; margin: 5px 0; }
  .mobile-nav { max-height: 0; overflow: hidden; transition: max-height 0.2s cubic-bezier(0.4, 0, 0.2, 1); }
  .nav-toggle:checked ~ .main-nav .mobile-nav { display: block; max-height: 80vh; overflow-y: auto; }
  .mobile-nav a { display: block; padding: 10px 4px; color: #fff; text-decoration: none; border-top: 1px solid #24465a; }
  .header-cta { display: none; }
}
/* Focus visibility and blog typography */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #e8a33d; outline-offset: 2px; }
main.blog .block p { font-size: 1.05rem; }
main.blog .block h2 { font-size: 1.45rem; }
.hero .motif-wrap svg text { user-select: none; }
@media print {
  .site-header, .site-footer, .cta-row, .header-cta { display: none; }
  body { background: #fff; }
  .block, .ev-cell, .card { border-color: #999; }
}
/* Pull-quote treatment for guide callouts and small-print notes */
.callout { border-left: 4px solid #e8a33d; background: #fdf8ec; padding: 14px 18px; margin: 16px 0; }
.smallprint { font-size: 0.85rem; color: #5a6d72; }
.section-rule { border: 0; border-top: 1px solid #d5e0e0; margin: 24px 0; }

@media (hover: hover) {
  a:hover { color: #0f2a3d; }
  .nav > li > a:hover { background: #1a3d52; }
  .has-menu:hover .menu { display: block; }
  .menu a:hover { background: #eef5f5; color: #0e7c86; }
  .btn:hover { background: #0f2a3d; color: #fff; border-color: #0f2a3d; }
  .post-card h2 a:hover { color: #0e7c86; text-decoration: underline; }
}
.btn:active { transform: scale(.97); }
@media (prefers-reduced-motion: reduce) {
  .mobile-nav { transition: none; }
}