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16px;font-size:.9375rem;line-height:1.8}.burn-confirm-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.burn-msg{margin:0;color:var(--paper);font-size:1rem;letter-spacing:.08em;opacity:0;transition:opacity .6s ease-in}.burn-msg.show{opacity:1}@media(max-width:400px){.letter-actions .btn,.letter-actions .btn-quiet{flex:1 1 100%}.draft-item{flex-direction:column;align-items:flex-start}}@media(prefers-reduced-motion:reduce){.burn-veil{animation:none}.burn-card,.burn-msg{transition:none}}:root{--bp-sm: 640px;--bp-md: 768px;--bp-lg: 1024px;--container-max: 672px;--tap-target: 44px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-serif);font-size:16px;line-height:1.6;color:var(--text-primary);background:var(--bg-base)}button,a,select,input,textarea,[role=button],summary{min-height:var(--tap-target)}a{color:var(--ink)}.container{max-width:var(--container-max);margin-inline:auto;padding:40px 20px 24px}.site-header{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:flex-start;justify-content:space-between}.title{margin:0;font-size:1.5rem;line-height:1.3}.subtitle{margin:8px 0 0;font-size:.8125rem;color:var(--text-secondary)}.lang-switch select{font-family:inherit;font-size:1rem;min-height:var(--tap-target);padding:0 12px;color:var(--text-primary);background:var(--paper);border:1px solid var(--border);border-radius:var(--radius-card)}.section{margin-top:24px}.card{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}.card .btn{margin-top:12px}.btn{font-family:inherit;font-size:.9375rem;padding:10px 16px;border:none;border-radius:var(--radius-card);background:var(--ink);color:var(--paper);cursor:pointer;transition:opacity 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