.etude-page{max-width:38rem;margin:0 auto;padding:0}.etude-head{margin-bottom:2rem}.etude-kicker{font-family:var(--sans);font-size:var(--label-size);letter-spacing:var(--label-tracking);text-transform:uppercase;color:var(--muted);font-weight:600;margin:0 0 .6rem}.etude-title{font-family:var(--serif-display);font-size:2.25rem;line-height:1.15;margin:0 0 .5rem;letter-spacing:-.01em}.etude-relief{font-family:var(--serif);font-style:italic;color:var(--muted);font-size:1.05rem;margin:0 0 1rem;line-height:1.45}.etude-nav{font-family:var(--sans);font-size:.85rem;color:var(--muted)}.etude-nav a{color:var(--muted);text-decoration:none}.etude-nav a:hover{color:var(--accent)}.etude-nav-sep{margin:0 .5rem;opacity:.5}.etude-intro{margin:0 0 1.5rem}.etude-intro p{margin:0 0 .85rem;line-height:1.6}.etude-stage{min-height:22rem}.etude-card{background:var(--bg-soft);border-radius:12px;padding:1.5rem 1.5rem 1.25rem}.etude-step{font-family:var(--sans);font-size:var(--label-size);letter-spacing:var(--label-tracking);text-transform:uppercase;color:var(--muted);font-weight:600;margin:0 0 .85rem}.etude-card-title{font-family:var(--serif-display);font-size:1.5rem;line-height:1.25;margin:0 0 .85rem;letter-spacing:-.005em;color:var(--text)}.pr-shell{transition:opacity .24s ease}.pr-shell-locked{opacity:.55;pointer-events:none}.pr-head{padding:0 0 .85rem;border-bottom:1px solid var(--line);margin-bottom:.9rem}.pr-title{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}.pr-state{font-family:var(--sans);font-size:.7rem;background:#2d7a3e;color:#fff;padding:.18rem .6rem;border-radius:6px;text-transform:uppercase;letter-spacing:.06em;font-weight:700}.pr-name{font-family:var(--serif-display);font-weight:600;font-size:1.1rem;line-height:1.3;color:var(--text);letter-spacing:-.005em}.pr-meta{margin-top:.55rem;font-family:var(--sans);font-size:.82rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;line-height:1.4}.pr-meta code{background:var(--bg);padding:.08rem .35rem;border-radius:4px;font-size:.8rem;border:1px solid var(--line)}.pr-meta .muted{color:var(--muted);font-style:italic}.pr-meta .dot{opacity:.5}.pr-meta .add{color:#2d7a3e;font-weight:600}.pr-meta .del{color:var(--accent);font-weight:600}.pr-desc{padding:0 0 .9rem;border-bottom:1px solid var(--line);margin-bottom:.9rem}.desc-label{margin:0 0 .35rem;font-family:var(--sans);font-size:var(--label-size);text-transform:uppercase;letter-spacing:var(--label-tracking);color:var(--muted);font-weight:600}.desc-body{margin:0;font-size:.95rem;color:var(--text)}.desc-body.muted{color:var(--muted);font-style:italic}.pr-diff{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--bg);margin-bottom:1.1rem}.diff-file{padding:.5rem .85rem;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.8rem;color:var(--muted);background:var(--bg-soft);border-bottom:1px solid var(--line)}.pr-diff pre{margin:0;padding:.5rem 0;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.8rem;line-height:1.6;overflow-x:auto;background:var(--bg)}.pr-diff code{display:block}.pr-diff .ctx{display:block;padding:0 .85rem;color:var(--text)}.pr-diff .add-line{display:block;padding:0 .85rem;background:#2d7a3e14;color:#1a5a2e}.pr-diff .del-line{display:block;padding:0 .85rem;background:#8a342014;color:var(--accent)}.pr-actions{display:flex;flex-direction:column;gap:.85rem}.timer-row{display:flex;align-items:baseline;gap:.4rem;font-family:var(--sans);font-size:var(--label-size);letter-spacing:var(--label-tracking);text-transform:uppercase;color:var(--muted);font-weight:600}.timer{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:1.1rem;color:var(--text);font-weight:600;letter-spacing:0;text-transform:none}.timer-hot{color:var(--accent);animation:pulse .8s infinite alternate}@keyframes pulse{0%{opacity:1}to{opacity:.55}}.btns{display:flex;flex-wrap:wrap;gap:.55rem}.pr-btn{appearance:none;-webkit-appearance:none;font-family:var(--sans);font-size:.9rem;font-weight:600;letter-spacing:.01em;padding:.7rem 1.05rem;border-radius:6px;cursor:pointer;border:1px solid;min-height:44px;transition:background .18s ease,border-color .18s ease,transform .12s ease,box-shadow .18s ease}.pr-btn:hover:not(:disabled){box-shadow:0 1px 3px #2b252014}.pr-btn:active:not(:disabled){transform:scale(.98)}.pr-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.pr-btn-approve{border-color:#2d7a3e;color:#1a5a2e;background:#2d7a3e0f}.pr-btn-approve:hover:not(:disabled){background:#2d7a3e24}.pr-btn-changes{border-color:var(--accent);color:var(--accent);background:#8a34200d}.pr-btn-changes:hover:not(:disabled){background:#8a34201f}.pr-btn-skip{border-color:var(--line);color:var(--text);background:var(--bg)}.pr-btn-skip:hover:not(:disabled){background:var(--bg-soft);border-color:var(--muted)}.etude-feedback:not(:empty){margin-top:1.25rem}.etude-verdict{background:var(--bg-soft);border-radius:12px;padding:1.25rem 1.5rem;border-left:3px solid var(--accent)}.etude-verdict-label{font-family:var(--sans);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;margin:0 0 .55rem}.etude-verdict-right .etude-verdict-label{color:#2d7a3e}.etude-verdict-partial .etude-verdict-label{color:#b87333}.etude-verdict-wrong .etude-verdict-label{color:var(--accent)}.etude-verdict-text{margin:0;line-height:1.6;color:var(--text)}.etude-card-reveal{margin-top:1.25rem}.reveal-body{margin:0 0 1.25rem;line-height:1.6;color:var(--text)}.etude-next{appearance:none;-webkit-appearance:none;font-family:var(--sans);font-size:.9rem;font-weight:600;letter-spacing:.01em;padding:.7rem 1.2rem;border:none;background:var(--text);color:var(--bg);border-radius:6px;cursor:pointer;min-height:44px;transition:background .18s ease,transform .12s ease}.etude-next:hover{background:var(--accent)}.etude-next:active{transform:scale(.97)}.etude-next:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.etude-next:after{content:" →"}.etude-coda{margin:2.5rem 0 0;padding-top:1.25rem;border-top:1px solid var(--line)}.etude-coda p{color:var(--muted);font-style:italic;line-height:1.6;margin:0}@media(max-width:32rem){.etude-title{font-size:1.85rem}.etude-card{padding:1.15rem 1.1rem 1rem;border-radius:10px}.etude-card-title{font-size:1.3rem}.pr-name{font-size:1rem}.pr-btn{padding:.7rem .9rem;font-size:.88rem}.btns{gap:.5rem}.etude-verdict{padding:1rem 1.15rem}}