/* Final mobile composition: preserve the complete architecture image. */
@media (max-width:900px){
 :root{--dock-height:78px}
 body{padding-bottom:calc(var(--dock-height) + env(safe-area-inset-bottom,0px))}
 html{scroll-padding-top:70px}
 .chapter-nav{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));top:0;min-height:52px;padding:0 10px;gap:0;overflow:visible;background:#2c2926;border-block:1px solid #d6c09b26;box-shadow:0 4px 14px #00000012}
 .chapter-nav a{min-width:0;min-height:52px;padding:12px 0;margin:0!important;font-size:13px;line-height:1.5;letter-spacing:0;white-space:nowrap}
 .chapter-nav a.current{color:#f1d6a6;background:#d5b8810c;box-shadow:inset 0 -2px #d7bb85}
 .chapter-nav span,.chapter-nav .nav-label-desktop{display:none}
 .chapter-nav .nav-label-mobile{display:inline;font:inherit}
 .architecture.section-pad{padding-block:52px}
 .architecture .architecture-grid{grid-template-columns:minmax(0,1fr);gap:28px}
 .architecture .architecture-visual{order:0;min-width:0;width:100%;margin:0;padding:0;perspective:none;transform:none}
 .architecture .architecture-visual>img{display:block;width:100%;max-width:100%;height:auto!important;min-height:0;max-height:none;aspect-ratio:1160/640!important;object-fit:contain;object-position:center;padding:0;border:1px solid #c7b69755;border-radius:3px;box-shadow:0 12px 30px -18px #2c292655;transform:none!important}
 .architecture .architecture-stamp{display:none}
 .architecture .image-note{display:block;margin:12px 0 0;font-size:11px;line-height:1.65;color:#625b53;word-break:keep-all}
 .architecture .architecture-copy{order:1}
 .architecture .architecture-copy .eyebrow{margin-bottom:12px}
 .call-dock{min-height:0;height:calc(78px + env(safe-area-inset-bottom,0px));padding:9px 14px calc(9px + env(safe-area-inset-bottom,0px));gap:10px;align-items:stretch;background:#2c2926f7;border-top:1px solid #dcc59e44;box-shadow:0 -4px 20px #00000020;backdrop-filter:none}
 .call-dock .dock-context,.call-dock .dock-direct{display:none}
 .call-dock .dock-primary{flex:1!important;min-width:0;min-height:0;padding:8px 12px;gap:0;border-radius:6px;background:linear-gradient(110deg,#e8d4ae,#d9bc88);border:1px solid #eedbb8;color:#2c2926;text-align:center;box-shadow:inset 0 1px #fff5}
 .call-dock .dock-primary small{display:block;font-family:var(--sans);font-size:11px;font-weight:500;line-height:1.4;color:#2c2926;white-space:nowrap}
 .call-dock .dock-primary strong{display:block;margin-top:3px;font-family:var(--sans);font-size:clamp(19px,5.6vw,24px);font-weight:650;line-height:1.2;letter-spacing:.01em;white-space:nowrap}
 .call-dock .dock-message{display:flex;flex:0 0 88px;min-width:0;min-height:0;flex-direction:column;justify-content:center;gap:4px;padding:6px 8px;border:1px solid #cdb58b66;border-radius:6px;background:#2c2926;color:#f0dfc1;font-family:var(--sans);font-size:12px;line-height:1.3;white-space:nowrap}
 .call-dock .dock-message svg{display:block;width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none}
 .call-dock a:focus-visible,.back-top:focus-visible{outline:2px solid #f1d6a6;outline-offset:3px}
 .back-top{right:14px;bottom:calc(90px + env(safe-area-inset-bottom,0px));width:44px;height:44px;min-width:44px;min-height:44px;padding:0;border-radius:50%;font-size:24px;line-height:1;background:#2c2926f2;border:1px solid #ddc79c66;box-shadow:0 3px 12px #0002}
 .back-top[hidden]{display:none}
}
@media(min-width:901px){.call-dock .dock-message{display:none}}
@media(max-width:359px){.call-dock{padding-inline:10px;gap:8px}.call-dock .dock-message{flex-basis:76px}.chapter-nav{padding-inline:4px}.chapter-nav a{font-size:12px}}