/* Landing page — EVO public surface (P-017 mobile-first responsive pass) */
:root{--landing-max:1120px}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:fixed;left:1rem;top:1rem;width:auto;height:auto;padding:.6rem 1rem;background:#07100e;color:var(--accent);border:1px solid var(--accent);border-radius:8px;z-index:1000;clip:auto}

/* ---------------------------------------------------------------------------
   Mobile-first base (target 360px width).
   --------------------------------------------------------------------------- */

/* Topbar */
.landing-topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line);background:rgba(6,9,13,.86);backdrop-filter:blur(14px);flex-wrap:wrap}
.landing-logo{font-size:1.4rem;font-weight:800;letter-spacing:-.06em;color:#f4f7f8;text-decoration:none;white-space:nowrap}
.landing-nav{display:none;flex-direction:column;gap:0;position:absolute;top:100%;left:0;right:0;background:rgba(6,9,13,.97);border-bottom:1px solid var(--line);padding:8px 14px;z-index:60}
.landing-nav.open{display:flex}
.landing-nav a{color:var(--muted);text-decoration:none;font-size:.9rem;letter-spacing:.06em;transition:color 160ms ease;padding:14px 4px;border-bottom:1px solid var(--line);min-height:48px;display:flex;align-items:center}
.landing-nav a:last-child{border-bottom:0}
.landing-nav a:hover,.landing-nav a:focus-visible{color:#eaf3f5}
.landing-nav-toggle{display:flex;cursor:pointer;flex-direction:column;gap:4px;padding:10px;min-width:44px;min-height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:8px}
.landing-nav-toggle span{display:block;width:22px;height:2px;background:#eaf3f5;border-radius:2px}
.landing-topbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.env-badge{border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:.62rem;letter-spacing:.1em;color:var(--accent);white-space:nowrap}
.env-badge[data-env="TESTNET-10"]{color:var(--accent)}
.env-badge[data-env="LOCAL"]{color:var(--accent2)}
.landing-cta-top{border:1px solid var(--accent);border-radius:999px;padding:10px 16px;font-size:.78rem;font-weight:700;letter-spacing:.04em;color:#07100e;background:var(--accent);text-decoration:none;transition:opacity 160ms ease;min-height:44px;display:inline-flex;align-items:center}
.landing-cta-top:hover,.landing-cta-top:focus-visible{opacity:.88}

/* Hero — single column on mobile (stack being + copy) */
.landing-hero{max-width:var(--landing-max);margin:0 auto;padding:48px 16px 40px;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.being-static{width:min(70vw,300px);height:min(70vw,300px);margin:0 auto}
.landing-hero-copy h1{margin:0 0 18px;font-size:clamp(2rem,8vw,4.6rem);letter-spacing:-.05em;line-height:.98}
.landing-hero-copy .lead{max-width:560px}
.landing-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.landing-hero-actions .primary,.landing-hero-actions .secondary{margin:0;min-height:44px;display:inline-flex;align-items:center}

/* Sections */
.landing-section{max-width:var(--landing-max);margin:0 auto;padding:40px 16px;border-top:1px solid var(--line)}
.landing-section h2{margin:0 0 16px;font-size:clamp(1.6rem,5vw,2.8rem);letter-spacing:-.04em;line-height:1.05;max-width:18ch}
.landing-section-lead{max-width:640px;color:#b7c1c8;font-size:1rem;line-height:1.7;margin:0 0 24px}

/* Cards */
.landing-card{border:1px solid var(--line);background:var(--panel);border-radius:18px;padding:20px;backdrop-filter:blur(12px)}
.landing-card h3{margin:0 0 8px;font-size:1.15rem}
.landing-card p{margin:0;color:var(--muted);line-height:1.6;font-size:.95rem}

/* Birth steps — single column on mobile */
.birth-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:16px}
.birth-step{border:1px solid var(--line);background:var(--panel);border-radius:18px;padding:22px;text-align:center}
.birth-step h3{margin:14px 0 8px}
.birth-step p{margin:0;color:var(--muted);line-height:1.55;font-size:.9rem}
.birth-icon{width:56px;height:56px;margin:0 auto;border-radius:50%;border:2px solid var(--accent);background:radial-gradient(circle at 50% 50%,rgba(121,242,206,.18),transparent 70%)}
.birth-icon-hatch{border-color:var(--accent2);background:radial-gradient(circle at 50% 50%,rgba(126,184,255,.18),transparent 70%)}
.birth-icon-evolve{border-color:var(--accent);background:radial-gradient(circle at 50% 50%,rgba(121,242,206,.28),transparent 70%)}

/* Grids — single column on mobile */
.identity-grid,.memory-grid,.work-grid,.market-grid,.safety-grid{display:grid;grid-template-columns:1fr;gap:16px}
.safety-grid{grid-template-columns:1fr}

.coming-soon-note{margin-top:24px;color:var(--accent);font-size:.85rem;letter-spacing:.04em}

/* FAQ — collapsible on mobile (details/summary already collapsible) */
.faq-list{display:grid;gap:12px;max-width:760px}
.faq-item{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:16px 18px}
.faq-item summary{cursor:pointer;font-weight:700;font-size:1rem;color:#eaf3f5;list-style:none;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--accent);font-weight:800;transition:transform 200ms ease;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin:12px 0 0;color:var(--muted);line-height:1.65}
.faq-item a{color:var(--accent)}

/* Final CTA — full-width on mobile */
.landing-cta{max-width:var(--landing-max);margin:0 auto;padding:60px 16px;text-align:center;border-top:1px solid var(--line)}
.landing-cta h2{font-size:clamp(1.8rem,6vw,3.4rem);letter-spacing:-.04em;margin:0 0 12px}
.landing-cta p{color:#b7c1c8;margin:0 0 28px}
.landing-cta-button{font-size:1.1rem;padding:16px 32px;min-height:44px;width:100%;max-width:320px;display:inline-flex;align-items:center;justify-content:center}

/* Footer */
.landing-footer{border-top:1px solid var(--line);padding:32px 16px}
.landing-footer-inner{max-width:var(--landing-max);margin:0 auto;display:grid;gap:16px}
.landing-footer-nav{display:flex;gap:14px;flex-wrap:wrap}
.landing-footer-nav a{color:var(--muted);text-decoration:none;font-size:.85rem;min-height:44px;display:flex;align-items:center;padding:4px 0}
.landing-footer-nav a:hover,.landing-footer-nav a:focus-visible{color:#eaf3f5}
.landing-footer-note{color:var(--muted);font-size:.78rem;line-height:1.6;max-width:640px}
.landing-footer-env{color:var(--muted);font-size:.74rem;letter-spacing:.06em}

/* Touch targets — minimum 44x44px for all interactive elements */
.landing-cta-top,.landing-cta-button,.landing-hero-actions .primary,.landing-hero-actions .secondary{min-height:44px;min-width:44px}

/* Focus visibility (also in a11y.css) */
a:focus-visible,button:focus-visible,summary:focus-visible,.landing-cta-top:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}

/* ---------------------------------------------------------------------------
   Tablet / desktop — multi-column layouts.
   --------------------------------------------------------------------------- */
@media(min-width:768px){
  .landing-topbar{padding:14px 20px;gap:16px;flex-wrap:nowrap}
  .landing-logo{font-size:1.5rem}
  .landing-nav{display:flex;flex-direction:row;gap:18px;flex-wrap:wrap;position:static;background:transparent;border:0;padding:0}
  .landing-nav a{padding:6px 4px;border-bottom:2px solid transparent;min-height:auto;font-size:.82rem}
  .landing-nav-toggle{display:none}
  .landing-topbar-right{gap:12px}
  .landing-cta-top{padding:8px 16px;font-size:.78rem;min-height:auto}

  .landing-hero{grid-template-columns:minmax(280px,1fr) minmax(320px,1.1fr);gap:48px;padding:80px 20px 60px}
  .being-static{width:min(60vw,420px);height:min(60vw,420px)}
  .landing-hero-copy h1{font-size:clamp(2.4rem,6vw,4.6rem)}

  .landing-section{padding:56px 20px}
  .landing-section h2{font-size:clamp(1.8rem,4vw,2.8rem)}
  .landing-section-lead{font-size:1.05rem;margin:0 0 32px}

  .landing-card{padding:22px}
  .landing-card h3{font-size:1.2rem}

  .birth-steps{grid-template-columns:repeat(3,1fr);gap:16px}
  .birth-step{padding:24px}

  .identity-grid,.memory-grid,.work-grid,.market-grid{grid-template-columns:repeat(3,1fr)}
  .safety-grid{grid-template-columns:repeat(2,1fr)}

  .faq-item{padding:18px 22px}
  .faq-item summary{font-size:1.02rem;min-height:auto}

  .landing-cta{padding:80px 20px}
  .landing-cta-button{width:auto;max-width:none;padding:18px 36px;min-height:auto}

  .landing-footer{padding:40px 20px}
  .landing-footer-nav{gap:18px}
  .landing-footer-nav a{min-height:auto;padding:0}
}

@media(min-width:1024px){
  .landing-hero{gap:48px}
}

/* ---------------------------------------------------------------------------
   Small mobile refinements.
   --------------------------------------------------------------------------- */
@media(max-width:520px){
  .landing-topbar{gap:10px}
  .landing-cta-top{padding:8px 12px;font-size:.72rem}
  .landing-hero{padding:36px 14px 32px}
  .landing-section{padding:32px 14px}
  .landing-cta{padding:48px 14px}
  .landing-footer{padding:28px 14px}
}