:root{color-scheme:light dark;--bg: #f6f7fb;--bg-elevated: rgba(255, 255, 255, .8);--bg-input: rgba(255, 255, 255, .75);--border: rgba(15, 23, 42, .08);--text: #0f172a;--text-muted: rgba(15, 23, 42, .6);--accent: #2563eb;--accent-contrast: #ffffff;--accent-soft: rgba(37, 99, 235, .12);--shadow: 0 12px 30px rgba(15, 23, 42, .08);--radius-lg: 24px;--radius-md: 16px;--radius-sm: 12px;--max-content-width: 1280px;--reader-surface: rgba(255, 255, 255, .96);--reader-panel: rgba(255, 255, 255, .92);--reader-border: rgba(15, 23, 42, .08);--reader-text: #1f2a37;--reader-muted: rgba(31, 42, 55, .6);--reader-shadow: 0 20px 45px rgba(15, 23, 42, .08);font-family:Inter,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6;background-color:var(--bg);color:var(--text)}@media (prefers-color-scheme: dark){:root{--bg: #0b1120;--bg-elevated: rgba(15, 23, 42, .6);--bg-input: rgba(30, 41, 59, .8);--border: rgba(148, 163, 184, .1);--text: #e2e8f0;--text-muted: rgba(226, 232, 240, .7);--accent: #60a5fa;--accent-contrast: #0b1120;--accent-soft: rgba(96, 165, 250, .18);--shadow: 0 12px 34px rgba(15, 23, 42, .45);--reader-surface: rgba(15, 23, 42, .72);--reader-panel: rgba(17, 24, 39, .88);--reader-border: rgba(148, 163, 184, .2);--reader-text: #f3f4f6;--reader-muted: rgba(209, 213, 219, .65);--reader-shadow: 0 24px 48px rgba(2, 6, 23, .55)}}:root[data-theme=light]{--bg: #f5f7ff;--bg-elevated: rgba(255, 255, 255, .9);--bg-input: rgba(255, 255, 255, .82);--border: rgba(15, 23, 42, .07);--text: #0f172a;--text-muted: rgba(15, 23, 42, .65);--accent: #2563eb;--accent-contrast: #ffffff;--accent-soft: rgba(37, 99, 235, .12);--shadow: 0 12px 34px rgba(15, 23, 42, .07);--reader-surface: rgba(255, 255, 255, .96);--reader-panel: rgba(255, 255, 255, .92);--reader-border: rgba(15, 23, 42, .08);--reader-text: #1f2a37;--reader-muted: rgba(31, 42, 55, .6);--reader-shadow: 0 20px 45px rgba(15, 23, 42, .08)}:root[data-theme=dark]{--bg: #040715;--bg-elevated: rgba(15, 23, 42, .72);--bg-input: rgba(30, 41, 59, .82);--border: rgba(148, 163, 184, .16);--text: #e2e8f0;--text-muted: rgba(226, 232, 240, .65);--accent: #60a5fa;--accent-contrast: #0b1120;--accent-soft: rgba(96, 165, 250, .2);--shadow: 0 14px 36px rgba(15, 23, 42, .6);--reader-surface: rgba(15, 23, 42, .72);--reader-panel: rgba(17, 24, 39, .9);--reader-border: rgba(148, 163, 184, .24);--reader-text: #f3f4f6;--reader-muted: rgba(203, 213, 225, .68);--reader-shadow: 0 26px 52px rgba(2, 6, 23, .55)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,rgba(37,99,235,.08),transparent 40%),radial-gradient(circle at bottom right,rgba(21,128,61,.06),transparent 46%),var(--bg);color:var(--text);transition:background .4s ease,color .2s ease}#root{min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-shell{flex:1;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:color-mix(in srgb,var(--bg-elevated) 90%,transparent);border-bottom:1px solid var(--border)}.app-header-inner{max-width:var(--max-content-width);margin:0 auto;padding:18px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.2rem}.brand-logo{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#2563ebd9,#15803db3);display:grid;place-items:center;color:#fff;font-size:1rem;font-weight:600;letter-spacing:.04em}.theme-toggle{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:8px 16px;border:1px solid color-mix(in srgb,var(--accent) 25%,var(--border) 75%);background:color-mix(in srgb,var(--bg-input) 88%,#ffffff 12%);color:var(--text);box-shadow:0 10px 24px #2563eb24;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.theme-toggle:hover{transform:translateY(-1px);box-shadow:0 12px 28px #2563eb33}.theme-toggle strong{color:var(--text);font-weight:700}.theme-toggle span{font-size:.85rem;color:color-mix(in srgb,var(--text) 78%,#475569 22%)}.app-main{flex:1;max-width:var(--max-content-width);margin:0 auto;width:100%;padding:32px 28px 48px;display:flex;flex-direction:column;gap:32px}.panel{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.panel-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.panel-title{font-size:1.4rem;font-weight:600}.panel-subtitle{color:var(--text-muted);font-size:.95rem}.reading-history{margin:28px 0;padding:24px;border-radius:var(--radius-md);border:1px solid var(--border);background:color-mix(in srgb,var(--bg-input) 90%,rgba(37,99,235,.04) 10%);box-shadow:inset 0 1px #ffffff1a;display:flex;flex-direction:column;gap:18px}.reading-history-header h2{margin:0;font-size:1.1rem;font-weight:600}.reading-history-header p{margin:6px 0 0;color:var(--text-muted);font-size:.9rem}.reading-history-list{display:grid;gap:14px}.reading-history-item{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:14px 16px;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid transparent;transition:transform .16s ease,border-color .2s ease}.reading-history-item:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 24%,transparent)}.reading-history-text{display:flex;flex-direction:column;gap:4px}.reading-history-book{font-weight:600}.reading-history-chapter{font-size:.9rem;color:var(--text-muted)}.reading-history-meta{display:flex;flex-direction:column;gap:6px;align-items:flex-end;font-size:.85rem;color:var(--text-muted)}.reading-history-action{color:var(--accent);font-weight:500}.search-box{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md);min-width:260px;box-shadow:inset 0 1px 2px #0f172a0d}.search-box input{flex:1;border:none;outline:none;background:transparent;color:var(--text)}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px}.book-card{padding:22px;border-radius:var(--radius-md);background:var(--bg-input);border:1px solid transparent;display:flex;flex-direction:column;gap:10px;transition:transform .18s ease,border-color .2s ease,box-shadow .2s ease;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.book-card:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--accent) 24%,transparent);box-shadow:0 16px 30px #2563eb38}.book-title{font-size:1.1rem;font-weight:600}.book-author{color:var(--text-muted);font-size:.9rem}.book-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:500}.book-link svg{width:18px;height:18px}.breadcrumb{display:inline-flex;align-items:center;gap:12px;font-size:.9rem;color:var(--text-muted);margin-bottom:18px}.breadcrumb a{color:var(--accent)}.book-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between}.book-actions{display:flex;align-items:center;gap:12px}.continue-button{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-sm);padding:10px 18px;background:var(--bg-input);border:1px solid color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent);font-weight:600;transition:transform .16s ease,box-shadow .2s ease}.continue-button:hover{transform:translateY(-1px);box-shadow:0 12px 24px #2563eb2e}.download-button{display:inline-flex;align-items:center;gap:8px;border:none;border-radius:var(--radius-sm);padding:10px 18px;background:var(--accent);color:var(--accent-contrast);cursor:pointer;box-shadow:0 14px 28px #2563eb59;transition:transform .18s ease,box-shadow .2s ease}.download-button:hover{transform:translateY(-2px);box-shadow:0 18px 34px #2563eb66}.chapter-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:22px}.chapter-item{padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-input);transition:transform .16s ease,border-color .2s ease}.chapter-item:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 30%,transparent)}.chapter-order{font-size:.82rem;color:var(--text-muted)}.chapter-title{margin-top:6px;font-weight:500;line-height:1.4}.reader-shell{padding:0;overflow:hidden;background:var(--reader-surface);border:1px solid var(--reader-border);box-shadow:var(--reader-shadow)}.reader-header{position:sticky;top:0;z-index:10;background:var(--reader-panel);border-bottom:1px solid var(--reader-border);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 28px 12px}.reader-breadcrumb{display:flex;align-items:center;gap:10px;font-size:.95rem;color:color-mix(in srgb,var(--reader-text) 70%,#475569 30%)}.reader-back{color:var(--accent);font-weight:600}.reader-controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.chapter-select{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius-sm);border:1px solid color-mix(in srgb,var(--accent) 25%,var(--reader-border) 75%);background:color-mix(in srgb,var(--bg-input) 85%,rgba(37,99,235,.08) 15%);color:var(--reader-text);box-shadow:0 6px 16px #2563eb29}.chapter-select span{font-size:.85rem;color:color-mix(in srgb,var(--reader-text) 75%,#475569 25%)}.chapter-select select{border:none;background:transparent;color:var(--reader-text);font:inherit;font-weight:600;max-width:240px}.chapter-select select option{color:var(--reader-text)}.reader-nav{display:inline-flex;align-items:center;gap:10px}.reader-settings-toolbar-button{padding:10px 14px;background:transparent;border:1px solid var(--border);border-radius:12px;font-size:18px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;color:var(--text)}.reader-settings-toolbar-button:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-1px);color:#fff}.reader-nav button,.reader-bottom-nav button{border:none;border-radius:999px;padding:12px 26px;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 100%,#0b1120 0%),color-mix(in srgb,var(--accent) 82%,#0b1120 18%));color:#fff;font-weight:650;letter-spacing:.015em;cursor:pointer;box-shadow:0 22px 34px #2563eb42;transition:transform .18s ease,box-shadow .24s ease,opacity .2s ease}.reader-nav button:hover,.reader-bottom-nav button:hover{transform:translateY(-1px);box-shadow:0 28px 42px #2563eb52}.reader-nav button:disabled,.reader-bottom-nav button:disabled{opacity:.7;cursor:not-allowed;box-shadow:none}.reader-heading{padding:0 28px 18px;display:flex;flex-direction:column;gap:6px}.reader-heading h1{margin:0;font-size:1.85rem;font-weight:600;color:var(--reader-text)}.reader-heading span{font-size:.95rem;color:color-mix(in srgb,var(--reader-text) 80%,#475569 20%)}.chapter-content{padding:48px 18vw 60px;white-space:pre-wrap;word-break:break-word;line-height:1.95;font-size:1.12rem;letter-spacing:.02em;color:var(--reader-text);text-rendering:optimizeLegibility;background:var(--reader-panel);border-radius:12px;margin:0 20px 20px;box-shadow:0 2px 8px #0000000d}.chapter-meta{margin-bottom:22px;font-size:.88rem;color:var(--reader-muted)}.chapter-loading{color:var(--reader-muted);font-size:1rem}.reader-bottom-nav{display:flex;justify-content:space-between;gap:16px;padding:22px 28px 26px;background:var(--reader-panel);border-top:1px solid var(--reader-border)}.chapter-content::selection{background:var(--accent-soft)}.skeleton{background:linear-gradient(90deg,#94a3b833 25%,#94a3b859 37%,#94a3b833 63%);background-size:400% 100%;animation:shimmer 1.6s ease infinite}@keyframes shimmer{0%{background-position:0 0}to{background-position:-135% 0}}.empty-state{padding:40px;text-align:center;color:var(--text-muted)}.error-state{padding:24px;border-radius:var(--radius-md);border:1px solid color-mix(in srgb,#ef4444 32%,transparent);background:#ef44441f;color:#7f1d1d}@media (max-width: 960px){.app-header-inner{padding:16px 20px}.app-main{padding:28px 20px 40px}.panel{padding:24px}.book-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}}@media (max-width: 680px){.app-header-inner{flex-direction:column;align-items:flex-start}.app-main{padding:24px 18px 36px}.panel{padding:20px}.panel-header{flex-direction:column;align-items:flex-start}.chapter-list{grid-template-columns:1fr}.book-actions{width:100%;flex-direction:column;align-items:stretch}.book-actions>*{width:100%;justify-content:center;text-align:center}.reading-history{padding:20px}.reading-history-item{grid-template-columns:1fr}.reading-history-meta{align-items:flex-start}.reader-toolbar{flex-direction:column;align-items:flex-start;width:100%;gap:12px}.reader-controls{width:100%;justify-content:space-between;gap:12px}.chapter-select{width:100%;justify-content:space-between}.chapter-select select{max-width:100%}.reader-nav{width:100%;justify-content:space-between}.reader-nav button,.reader-bottom-nav button{flex:1}.chapter-content{padding:36px 16px 44px;font-size:1.05rem}.reader-bottom-nav{flex-direction:column;align-items:stretch}}.reader-settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:10000;display:flex;align-items:center;justify-content:center;padding:20px}.reader-settings-panel{background:var(--bg-elevated);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:16px;box-shadow:0 24px 48px #0000004d;max-width:500px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;border:1px solid var(--border)}@media (prefers-color-scheme: dark){.reader-settings-panel{background:#111827f2}}[data-theme=dark] .reader-settings-panel{background:#111827f2}.reader-settings-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}.reader-settings-header h3{margin:0;font-size:20px;font-weight:600;color:var(--text)}.reader-settings-close{background:transparent;border:none;font-size:24px;color:var(--muted);cursor:pointer;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:all .2s}.reader-settings-close:hover{background:var(--border);color:var(--text)}.reader-settings-content{padding:24px;overflow-y:auto;flex:1}.reader-settings-group{margin-bottom:24px}.reader-settings-group:last-child{margin-bottom:0}.reader-settings-label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:12px}.reader-settings-slider{width:100%;height:6px;border-radius:3px;background:var(--border);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.reader-settings-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 2px 4px #0003;transition:all .2s}.reader-settings-slider::-webkit-slider-thumb:hover{transform:scale(1.1);box-shadow:0 3px 6px #0000004d}.reader-settings-slider::-moz-range-thumb{width:20px;height:20px;border:none;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 2px 4px #0003;transition:all .2s}.reader-settings-slider::-moz-range-thumb:hover{transform:scale(1.1);box-shadow:0 3px 6px #0000004d}.reader-settings-select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg-input);color:var(--text);font-size:14px;cursor:pointer;transition:all .2s}.reader-settings-select:hover{border-color:var(--accent)}.reader-settings-select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1a}.reader-settings-color-group{display:flex;gap:12px;align-items:center}.reader-settings-color{width:60px;height:40px;border:1px solid var(--border);border-radius:8px;cursor:pointer}.reader-settings-color::-webkit-color-swatch-wrapper{padding:2px}.reader-settings-color::-webkit-color-swatch{border:none;border-radius:6px}.reader-settings-color-text{flex:1;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg-input);color:var(--text);font-size:14px;font-family:monospace}.reader-settings-color-text:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1a}.reader-settings-presets{display:grid;grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:12px}.reader-preset-button{padding:12px 16px;border:2px solid transparent;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;text-align:center}.reader-preset-button:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 12px #00000026}@media (max-width: 680px){.reader-settings-panel{max-width:100%;max-height:90vh;border-radius:16px 16px 0 0}.reader-settings-presets{grid-template-columns:repeat(auto-fit,minmax(70px,1fr))}}