:root{color-scheme:light;--bg: #f5f7f8;--panel: #ffffff;--panel-soft: #f8faf9;--line: #dbe3df;--line-strong: #c5d0ca;--text: #17211d;--muted: #65736e;--faint: #8b9692;--accent: #14745f;--accent-strong: #0d5948;--accent-soft: #e2f3ee;--blue: #2d62a8;--blue-soft: #e9f1fb;--amber: #a16300;--amber-soft: #fff3d8;--danger: #bd3025;--shadow: 0 18px 42px rgba(26, 39, 34, .08);--nav-width: 244px;--player-height: 104px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;overflow:hidden;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,Microsoft YaHei,PingFang SC,Arial,sans-serif;letter-spacing:0}button,input,select,textarea{font:inherit}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);cursor:pointer;font-weight:650}button:hover{border-color:var(--accent);box-shadow:0 8px 18px #14745f1f}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid rgba(20,116,95,.22);outline-offset:2px}input,select{width:100%;height:40px;border:1px solid var(--line);border-radius:8px;padding:0 12px;background:var(--panel);color:var(--text)}input::placeholder{color:#98a4a0}.primary{border-color:var(--accent);background:var(--accent);color:#fff}.primary:hover{border-color:var(--accent-strong);background:var(--accent-strong)}.button-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;padding:0 14px;border:1px solid var(--line);border-radius:8px;color:var(--text);font-weight:700;text-decoration:none}.button-link.primary{border-color:var(--accent);color:#fff}.secondary{background:var(--panel)}.app-shell{display:grid;grid-template-columns:var(--nav-width) minmax(0,1fr);height:100%;overflow:hidden}.nav-rail{display:flex;flex-direction:column;min-width:0;height:100vh;padding:18px 14px calc(var(--player-height) + 16px);border-right:1px solid var(--line);background:linear-gradient(180deg,#fff,#f4f8f6)}.brand-block{display:grid;grid-template-columns:42px minmax(0,1fr);gap:11px;align-items:center;margin-bottom:22px}.brand-logo{display:grid;place-items:center;width:42px;height:42px;border-radius:8px;background:var(--accent);color:#fff;font-size:13px;font-weight:850;box-shadow:0 14px 28px #14745f3b}.brand-title{overflow:hidden;font-size:16px;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.brand-subtitle{margin-top:3px;color:var(--muted);font-size:12px}.nav-list{display:grid;gap:5px}.nav-item{display:flex;align-items:center;gap:10px;height:42px;padding:0 11px;border:1px solid transparent;border-radius:8px;color:var(--muted);text-decoration:none;font-weight:700}.nav-item:hover{background:var(--panel);color:var(--text)}.nav-item.active{border-color:#14745f2e;background:var(--accent-soft);color:var(--accent-strong)}.service-pill{display:flex;align-items:center;gap:8px;margin-top:auto;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--muted);font-size:12px;font-weight:700}.language-switch{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:14px;padding:4px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.language-switch button{min-height:30px;border:0;background:transparent;color:var(--muted);font-size:12px}.language-switch button.active{background:var(--accent-soft);color:var(--accent-strong)}.legal-links{display:flex;gap:12px;margin-top:auto;padding:12px 5px}.legal-links a{color:var(--muted);font-size:11px}.legal-links+.service-pill{margin-top:0}.page-frame{min-width:0;height:100vh;padding-bottom:var(--player-height);overflow:auto;background:radial-gradient(circle at 52% -10%,rgba(20,116,95,.08),transparent 360px),var(--bg)}.page{width:min(1240px,calc(100% - 48px));margin:0 auto;padding:26px 0 42px}.page-header{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:18px}.eyebrow,.label{color:var(--accent);font-size:12px;font-weight:850}.page-header h1{margin:6px 0;font-size:clamp(28px,4vw,42px);line-height:1.05}.page-header p{max-width:720px;margin:0;color:var(--muted);font-size:14px;line-height:1.55}.page-actions{display:flex;gap:10px;white-space:nowrap}.panel,.book-card,.voice-card,.metric-card,.reader-surface{border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:0 12px 30px #1a27220b}.library-toolbar{display:grid;grid-template-columns:minmax(260px,1fr) 160px 160px;gap:10px;padding:12px;margin-bottom:12px}.search-field{display:grid;grid-template-columns:20px minmax(0,1fr);align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--muted)}.search-field input{height:auto;border:0;padding:0;background:transparent}.import-strip{display:grid;grid-template-columns:minmax(250px,1fr) minmax(220px,.8fr) 180px 108px;gap:10px;align-items:center;padding:12px;margin-bottom:16px}.import-copy{display:flex;align-items:center;gap:11px;min-width:0}.import-copy svg{color:var(--accent)}.import-copy strong,.import-copy span{display:block}.import-copy span{overflow:hidden;color:var(--muted);font-size:13px;text-overflow:ellipsis;white-space:nowrap}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.book-card{display:grid;grid-template-columns:42px minmax(0,1fr);gap:11px;min-height:92px;padding:14px;text-align:left}.book-card.active{border-color:var(--accent);box-shadow:inset 4px 0 0 var(--accent),0 12px 28px #14745f14}.book-icon,.voice-avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:8px;background:var(--accent-soft);color:var(--accent)}.book-card-main{min-width:0}.book-card-main strong{display:block;overflow-wrap:anywhere;line-height:1.35}.book-card-main small{display:block;margin-top:7px;color:var(--muted);font-size:12px}.empty-panel{display:grid;place-items:center;gap:12px;min-height:220px;padding:28px;border:1px dashed var(--line-strong);border-radius:8px;background:#ffffff9e;color:var(--muted)}.reader-page{width:min(1000px,calc(100% - 48px))}.chapter-picker{display:grid;grid-template-columns:20px minmax(0,1fr);align-items:center;gap:8px;min-width:320px;color:var(--muted)}.reader-surface{min-height:calc(100vh - 242px);padding:clamp(26px,4vw,58px);background:#fffefb;color:#202923;font-family:LXGW 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0;padding:11px;border-radius:8px;background:var(--accent-soft);color:var(--accent-strong);font-size:11px;line-height:1.5}.local-note strong{display:block;margin-bottom:2px}.generate-button{width:100%;min-height:48px}.danger-button{border-color:var(--danger);background:var(--danger);color:#fff}.progress-panel{display:grid;gap:10px;margin-top:12px}.progress-copy strong,.progress-copy span,.progress-panel label span{display:block;font-size:12px}.progress-copy strong{margin-top:4px;font-size:14px}.progress-copy>span{color:var(--muted)}.progress-panel label{display:grid;gap:5px;color:var(--muted)}progress{width:100%;height:9px;border:0;border-radius:999px;accent-color:var(--accent)}.retry-button{justify-self:start}.results-section,.home-info,.ad-placeholder{margin-top:24px}.section-heading{margin-bottom:12px}.section-heading>span{color:var(--muted);font-size:12px}.result-list{display:grid;gap:8px}.result-card{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(250px,1fr) 110px 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var(--line);font-size:13px;line-height:1.55}.format-row:last-child{border-bottom:0}.format-row.header{background:var(--panel-soft)}.format-row>span:last-child{color:var(--muted)}.faq-item{padding:0 16px}.faq-item summary{padding:15px 0;cursor:pointer;font-weight:750}.faq-item p{padding:0 0 16px}.legal-sections{padding:22px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.legal-sections section+section{padding-top:14px;border-top:1px solid var(--line)}.status-line{min-height:19px;margin-bottom:8px;overflow:hidden;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.tone-error{color:var(--danger)}.tone-success{color:var(--accent)}.tone-working{color:var(--amber)}.progress-row{display:grid;grid-template-columns:54px minmax(0,1fr) 54px;gap:12px;align-items:center;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}.progress-row input{height:20px;padding:0;accent-color:var(--accent)}.progress-row 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-1;grid-row:2}}@media(max-width:640px){body{overflow:auto;background:#f7f9f8}.app-shell{display:block}.nav-rail{position:fixed;left:0;right:0;bottom:0;z-index:20;width:100%;height:auto;padding:8px max(8px,env(safe-area-inset-left)) calc(8px + env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-right));border-top:1px solid var(--line);border-right:0;border-bottom:0;background:#fffffff5;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.brand-block,.service-pill,.language-switch,.legal-links{display:none}.nav-list{grid-template-columns:repeat(6,1fr);gap:4px}.nav-item{height:48px;padding:0;border-radius:12px}.page-frame{width:100vw;height:auto;min-height:100vh;padding-bottom:calc(var(--player-height) + 68px + env(safe-area-inset-bottom));overflow-x:hidden}.page{width:calc(100vw - 24px);max-width:calc(100vw - 24px);padding-top:18px}.page-header{display:block;margin-bottom:14px}.page-header h1{font-size:30px}.page-header p{font-size:13px}.chapter-picker,.triple-fields,.connect-layout{grid-template-columns:1fr;min-width:0}.book-grid,.voice-grid,.settings-grid,.metric-grid{grid-template-columns:1fr}.reader-page{width:min(100% - 18px,920px)}.tool-page,.info-page{width:calc(100vw - 24px);max-width:calc(100vw - 24px)}.tool-grid,.tool-grid>.panel,.progress-panel,.results-section{width:100%;max-width:100%}.tool-hero .privacy-badge{margin-top:12px}.panel-title-row,.section-heading{align-items:flex-start;flex-wrap:wrap}.editor-actions{width:100%;flex-wrap:wrap;justify-content:flex-start}.text-editor-label textarea{min-height:280px}.info-grid{grid-template-columns:1fr}.result-card{grid-template-columns:minmax(0,1fr) 42px}.result-card audio,.result-card .button-link{grid-column:1 / -1}.result-card audio{grid-row:auto}.format-row{grid-template-columns:72px 96px minmax(0,1fr);gap:8px;padding:12px;font-size:11px}.local-player-bar{grid-template-columns:minmax(0,1fr) 142px}.voice-select-row{grid-template-columns:minmax(0,1fr)}.player-download .button-link{padding:0 9px;font-size:12px}.reader-surface{min-height:62vh;padding:22px 16px;font-size:17px;border-radius:10px}.player-bar{left:0;bottom:calc(64px + env(safe-area-inset-bottom));min-height:var(--player-height);padding:12px 14px}.transport{grid-template-columns:48px 64px 48px}.icon-button{width:48px;min-height:44px}.play-button{width:64px;min-height:48px}}