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auto}.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--r-md);color:var(--text-secondary);font-size:14px;font-weight:var(--fw-medium);transition:background var(--motion-fast) var(--ease-out),color var(--motion-fast) var(--ease-out)}.nav-item:hover{background:var(--surface-muted);color:var(--text-primary);text-decoration:none}.nav-item.active{background:var(--accent-50);color:var(--accent-700)}.nav-section{font-size:11.5px;color:var(--text-tertiary);font-weight:var(--fw-medium);padding:var(--sp-4) 12px var(--sp-2);letter-spacing:.04em}.credits-badge{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:var(--fw-semibold);color:var(--text-primary);background:var(--surface-muted);border:1px solid var(--border-subtle);border-radius:var(--r-pill);padding:5px 12px;cursor:pointer;transition:border-color var(--motion-fast) var(--ease-out)}.credits-badge:hover{border-color:var(--border-strong)}.avatar{width:30px;height:30px;border-radius:50%;flex-shrink:0;background:var(--brand-700);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:var(--fw-semibold);letter-spacing:.02em}.avatar-lg{width:56px;height:56px;font-size:20px}.divider{height:1px;background:var(--border-subtle);margin:var(--sp-4) 0}.menu-wrap{position:relative}.menu{position:absolute;right:0;top:calc(100% + 6px);z-index:50;background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow-md);min-width:200px;padding:6px;animation:pop-in var(--motion-fast) var(--ease-out)}.menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:none;background:none;cursor:pointer;font-family:inherit;font-size:14px;color:var(--text-primary);border-radius:var(--r-md);text-align:left}.menu-item:hover{background:var(--surface-muted)}.logo-mark{display:inline-flex;align-items:center;justify-content:center;border-radius:9px}.logo-row{display:inline-flex;align-items:center;gap:10px}.wordcard .word-title{font-size:20px;font-weight:var(--fw-semibold);font-family:var(--font-reading)}.wordcard .phonetic{color:var(--text-secondary);font-size:14px;font-family:var(--font-mono)}.wordcard .section{border-top:1px solid var(--border-subtle);padding-top:var(--sp-3);margin-top:var(--sp-3)}.wordcard .gloss-zh{color:var(--text-primary)}.reader-frame{background:var(--reader-bg);color:var(--reader-text);min-height:100vh;display:flex;flex-direction:column}.reader-content{flex:1;width:100%;max-width:var(--reader-max);margin:0 auto;padding:var(--sp-10) var(--sp-6) 30vh;font-family:var(--font-reading);font-size:var(--fs-reading);line-height:var(--fs-reading-lh);overflow-wrap:break-word}.reader-content p{margin:0 0 1.1em}.reader-content .zh-para{color:var(--reader-secondary);font-size:calc(var(--fs-reading) - 2px);border-left:2px solid var(--reader-border);padding-left:var(--sp-3);margin-bottom:1.4em}.reader-word{cursor:pointer;border-radius:4px;padding:0 1px;transition:background var(--motion-fast) var(--ease-out)}.reader-word:hover{background:var(--reader-highlight)}.reader-word.selected{background:var(--reader-selection)}.reader-word.dim{color:var(--reader-secondary)}.reader-topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:var(--sp-3);padding:10px 18px;background:var(--reader-bg);border-bottom:1px solid var(--reader-border);transition:opacity var(--motion-med) var(--ease-out),transform var(--motion-med) var(--ease-out)}.reader-topbar.hidden{opacity:0;pointer-events:none;transform:translateY(-100%)}.reader-topbar .title{color:var(--reader-secondary);font-size:13.5px;font-family:var(--font-sans)}.reader-selection-help{position:absolute;z-index:45}.hover-dim{opacity:.75;transition:opacity var(--motion-fast) var(--ease-out)}.hover-dim:hover{opacity:1}.kbd{font-family:var(--font-mono);font-size:11.5px;color:var(--text-secondary);border:1px solid var(--border);border-bottom-width:2px;border-radius:5px;padding:1px 6px;background:var(--surface)}.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.status-dot.live{background:var(--danger);animation:pulse 1.4s infinite}.status-dot.idle{background:var(--text-tertiary)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}code,pre{font-family:var(--font-mono)}.spinner-sm{width:15px;height:15px;border:2px solid var(--surface-sunken);border-top-color:currentColor;border-radius:50%;animation:spin .8s linear infinite;display:inline-block;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 900px){.shell-side{display:none}.page{padding:0 var(--sp-4)}}