:root{color-scheme:light;--bg: #f5f7fb;--surface: #ffffff;--surface-strong: #f0f4f8;--text: #172033;--muted: #667085;--line: #d7dee8;--accent: #136f63;--accent-strong: #0c5f55;--accent-soft: #dff4ef;--danger: #b42318;--shadow: 0 18px 40px rgba(24, 35, 56, .12);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0;background:var(--bg);color:var(--text)}.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(215,222,232,.86);background:#ffffffeb;backdrop-filter:blur(12px)}.site-header-inner{display:flex;align-items:center;justify-content:space-between;width:min(1480px,100%);min-height:56px;margin:0 auto;padding:0 20px;gap:16px}.site-brand{display:inline-flex;align-items:center;min-width:0;color:var(--text);text-decoration:none;gap:10px}.site-logo{display:block;width:34px;height:34px;border-radius:8px;object-fit:cover}.site-brand-text{display:grid;gap:1px}.site-brand-text strong{font-size:15px;line-height:1.2}.site-brand-text small{color:var(--muted);font-size:12px;line-height:1.2}.site-nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:6px}.site-nav a{display:inline-flex;align-items:center;min-height:34px;padding:0 10px;border-radius:8px;color:var(--muted);font-size:14px;font-weight:650;text-decoration:none}.site-nav a:hover{background:var(--accent-soft);color:var(--accent-strong)}button,textarea,input{font:inherit}button{cursor:pointer}.app-shell{width:min(1480px,100%);min-height:calc(100vh - 56px);margin:0 auto;padding:16px 20px 20px}.topbar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.eyebrow{margin:0 0 4px;color:var(--muted);font-size:11px;font-weight:600;letter-spacing:0}h1,h2{margin:0;letter-spacing:0}h1{font-size:30px;line-height:1.1}h2{font-size:20px}.topbar-actions,.editor-actions,.control-bar{display:flex;align-items:center;gap:8px}.topbar-actions{flex-wrap:wrap;justify-content:flex-end;margin-left:auto}.topbar-brand{position:relative;z-index:1}.topbar-mode{position:absolute;top:50%;left:50%;z-index:2;transform:translate(-50%,-50%)}.topbar-mode .mode-toggle{pointer-events:auto}.workspace{display:grid;grid-template-columns:minmax(300px,420px) minmax(0,1fr);gap:16px;align-items:stretch}.restore-editor-button{display:none}.focus-reader .restore-editor-button{display:inline-flex;align-items:center;justify-content:center;max-width:150px;padding:0 14px;border-color:var(--accent);background:var(--accent);color:#fff;line-height:1.15;white-space:normal}.focus-reader .workspace{grid-template-columns:1fr}.focus-reader .editor-panel{display:none}.fullscreen-reader{overflow:hidden}.fullscreen-reader .site-header,.fullscreen-reader .topbar,.fullscreen-reader .feature-section,.fullscreen-reader .seo-footer{display:none}.fullscreen-reader .app-shell{width:100%;min-height:100vh;padding:0}.fullscreen-reader .workspace{min-height:100vh}.fullscreen-reader .teleprompter-panel{height:100vh;min-height:100vh;border:0;border-radius:0;box-shadow:none}.fullscreen-reader .reader-progress-badge{right:68px}.editor-panel,.teleprompter-panel{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.editor-panel{display:flex;flex-direction:column;height:calc(100vh - 168px);min-height:calc(100vh - 168px);padding:16px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.script-slot-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:12px}.script-slot-button{min-height:38px;padding:0 10px;border:1px solid rgba(19,111,99,.28);border-radius:8px;background:var(--accent-soft);color:var(--accent-strong);font-weight:700}.script-slot-button.is-active{border-color:var(--accent);background:var(--accent);color:#fff}.recording-actions,.video-actions{display:inline-flex;align-items:center;gap:8px}.recording-cluster{display:inline-flex;align-items:center;gap:8px;margin-left:auto}#scriptInput{flex:1;width:100%;min-height:420px;padding:14px;resize:none;border:1px solid var(--line);border-radius:8px;outline:none;background:var(--surface-strong);color:var(--text);line-height:1.7}#scriptInput:focus{border-color:var(--accent);box-shadow:0 0 0 3px 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.mode-button{min-height:40px;padding:0 16px;font-size:14px;font-weight:800}.mode-button{min-height:32px;padding:0 12px;border-color:transparent;background:transparent;color:var(--accent-strong);font-size:13px}.mode-button.is-active{border-color:var(--accent);background:var(--accent);color:#fff}.primary-button{padding:0 18px;border-color:var(--accent);background:var(--accent);color:#fff}.primary-button:disabled{cursor:not-allowed;border-color:var(--line);background:var(--surface-strong);color:var(--muted)}.control-button:disabled{cursor:not-allowed;border-color:var(--line);background:var(--surface-strong);color:var(--muted)}.control-button.is-resume,.control-button.is-active{border-color:var(--accent);background:var(--accent);color:#fff;box-shadow:0 10px 22px #136f632e}.control-button,.text-button{padding:0 14px}.text-button.muted{color:var(--muted)}.icon-button,.control-button.square{width:42px;padding:0;font-size:18px}.icon-button.is-active{border-color:var(--accent);background:var(--accent);color:#fff}.range-control{display:grid;grid-template-columns:auto minmax(110px,160px);align-items:center;gap:8px;min-height:40px;padding:0 10px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:13px;font-weight:700}.range-control input{width:100%;accent-color:var(--accent)}.is-hidden{display:none!important}.running-indicator{display:inline-grid;grid-template-columns:repeat(3,5px);place-content:center;align-items:end;align-self:center;gap:4px;width:44px;height:32px;border:1px solid rgba(19,111,99,.26);border-radius:999px;background:var(--accent-soft);box-shadow:0 8px 18px #136f6324;opacity:0;transform:translateY(2px) scale(.96);transition:opacity .16s ease,transform .16s ease}.running-indicator i{display:block;width:5px;height:8px;border-radius:999px;background:var(--accent);animation:running-bars .56s ease-in-out infinite}.running-indicator i:nth-child(2){animation-delay:.12s}.running-indicator i:nth-child(3){animation-delay:.24s}.is-running .running-indicator{opacity:1;transform:translateY(0) scale(1)}@keyframes running-bars{0%,to{height:7px;opacity:.42}50%{height:22px;opacity:1}}.status-strip{grid-row:2;display:none;flex-wrap:wrap;gap:8px;padding:6px 12px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--accent-soft) 48%,var(--surface))}.status-strip.is-visible{display:flex}.status-strip span{min-height:24px;padding:3px 8px;border:1px solid rgba(19,111,99,.18);border-radius:999px;background:var(--surface);color:var(--accent-strong);font-size:12px;font-weight:600}.status-detail{display:none}.reader-frame{position:relative;grid-row:3;min-height:0;overflow:hidden;background:linear-gradient(180deg,#f5f7fbf5,#f5f7fb00 18%),linear-gradient(0deg,#f5f7fbf5,#f5f7fb00 18%),#fbfcfe}.reader-progress-badge{position:absolute;top:10px;right:12px;z-index:4;padding:3px 8px;border:1px solid rgba(19,111,99,.16);border-radius:999px;background:#ffffffad;color:var(--muted);font-size:12px;font-weight:600;pointer-events:none}.fullscreen-exit-button{position:absolute;top:10px;right:12px;z-index:8;display:none;place-items:center;width:42px;height:42px;border:1px solid rgba(19,111,99,.2);border-radius:8px;background:#ffffffc7;color:var(--text);box-shadow:0 12px 28px #18233824;font-size:28px;line-height:1}.fullscreen-reader .fullscreen-exit-button{display:grid}.fullscreen-exit-button:hover,.fullscreen-exit-button:focus-visible{background:var(--accent);color:#fff;outline:3px solid rgba(19,111,99,.18)}.reader-guide{position:absolute;top:50%;right:0;left:0;height:1px;background:var(--accent);opacity:.24;pointer-events:none;z-index:2}.reader-scroll{--cue-font-size: 52px;--reader-spacer-height: 240px;position:relative;height:100%;min-height:0;overflow:auto;padding:0 92px 0 40px;scroll-padding-block:0;scroll-behavior:auto;transform-origin:center}.cue-spacer{height:var(--reader-spacer-height);pointer-events:none}.segment-jump-controls{position:absolute;top:50%;right:12px;z-index:5;display:grid;gap:8px;transform:translateY(-50%);pointer-events:none}.segment-jump-button{display:grid;place-items:center;width:62px;min-height:52px;padding:6px 4px;border:1px solid rgba(19,111,99,.25);border-radius:8px;background:#13a076;color:#fff;box-shadow:0 14px 28px #136f6347;font-weight:900;pointer-events:auto}.segment-jump-button:hover,.segment-jump-button:focus-visible{background:#0f8b69;outline:3px solid rgba(19,160,118,.22)}.segment-jump-icon{font-size:21px;line-height:1}.segment-jump-label{font-size:12px;line-height:1.15}.mirror-mode .reader-scroll{transform:scaleX(-1)}.cue-line{display:block;width:100%;margin:0 0 18px;padding:10px 16px;border:0;border-radius:8px;background:transparent;color:var(--text);font-size:calc(var(--cue-font-size) * .56);font-weight:500;line-height:1.34;letter-spacing:0;text-align:left;opacity:.38;transition:color .16s ease,background .16s ease,opacity .16s ease,transform .16s ease,font-size .16s ease}.cue-line:hover,.cue-line:focus-visible{outline:none;background:var(--surface-strong)}.cue-line.is-read{color:var(--muted);opacity:.24}.cue-line.is-next{color:var(--text);font-size:calc(var(--cue-font-size) * .68);font-weight:650;opacity:.68}.cue-line.is-current{background:var(--accent-soft);color:var(--accent-strong);font-size:var(--cue-font-size);font-weight:800;opacity:1;transform:translate(4px)}.empty-state{margin:0;color:var(--muted);font-size:28px;font-weight:700;text-align:center}.live-panel{grid-row:4;display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;min-height:60px;padding:12px;border-top:1px solid var(--line);background:var(--surface)}.live-panel span{color:var(--muted);font-size:13px;font-weight:800}.live-panel p{min-width:0;margin:0;overflow:hidden;color:var(--text);font-weight:700;text-overflow:ellipsis;white-space:nowrap}.record-panel{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;min-height:64px;padding:12px;border-top:1px solid var(--line);background:var(--surface-strong)}.record-panel-title{color:var(--muted);font-size:13px;font-weight:800}.record-panel-status{min-width:0;margin:0;color:var(--text);font-weight:700}.recording-player,.video-player{width:min(260px,28vw);min-width:180px}.video-player{max-height:88px;border-radius:8px;background:#000}.video-live-preview{position:absolute;top:50%;left:50%;z-index:8;width:132px;aspect-ratio:16 / 9;border:2px solid rgba(255,255,255,.82);border-radius:8px;background:#000;box-shadow:0 12px 28px #18233838;object-fit:cover;pointer-events:none;transform:translate(-50%,-50%)}.countdown-overlay{position:fixed;inset:0;display:grid;place-items:center;visibility:hidden;background:#090e186b;opacity:0;pointer-events:none;transition:opacity .16s ease,visibility .16s ease;z-index:20}.countdown-overlay.is-visible{visibility:visible;opacity:1}.countdown-number{display:grid;place-items:center;width:min(34vw,220px);aspect-ratio:1;border:2px solid rgba(255,255,255,.38);border-radius:50%;background:#080d18b8;color:#fff;font-size:clamp(72px,18vw,150px);font-weight:900;line-height:1;transform:scale(.88)}.countdown-overlay.is-visible .countdown-number{animation:countdown-pop .88s ease both}@keyframes countdown-pop{0%{transform:scale(.72);opacity:0}18%{transform:scale(1);opacity:1}to{transform:scale(.94);opacity:1}}.dark-mode{color-scheme:dark;--bg: #111827;--surface: #182132;--surface-strong: #202b3d;--text: #eef4ff;--muted: #a8b3c7;--line: #344054;--accent: #49b8a8;--accent-strong: #bdf2e8;--accent-soft: rgba(73, 184, 168, .18);--shadow: 0 18px 40px rgba(0, 0, 0, .24)}.dark-mode .site-header{border-bottom-color:#344054e6;background:#182132eb}.dark-mode .reader-frame{background:linear-gradient(180deg,#111827f5,#11182700 18%),linear-gradient(0deg,#111827f5,#11182700 18%),#121a28}.dark-mode .fullscreen-exit-button{border-color:#49b8a847;background:#121a28c7;color:#e5edf7;box-shadow:0 12px 28px #00000047}.dark-mode .segment-jump-button{border-color:#49b8a861;background:#159a7d;box-shadow:0 14px 28px #00000052}@media (max-width: 980px){.site-header-inner{align-items:flex-start;min-height:auto;padding:10px 14px}.site-nav{max-width:58%}.app-shell{padding:12px}.topbar{flex-wrap:wrap}.topbar-mode{position:static;width:100%;transform:none;display:flex;justify-content:center;order:3}.mode-toggle-prominent{min-width:min(100%,460px)}.workspace{grid-template-columns:1fr}.feature-section{padding:0 12px 24px}.feature-inner,.feature-grid{grid-template-columns:1fr}.editor-panel,.teleprompter-panel{height:auto;min-height:auto}#scriptInput{min-height:220px}.teleprompter-panel{grid-template-rows:auto auto minmax(520px,68vh) auto}.reader-scroll{padding-right:78px;padding-left:18px}.segment-jump-controls{right:8px}.segment-jump-button{width:58px;min-height:50px}}@media (max-width: 620px){.site-header-inner{display:grid;grid-template-columns:1fr;gap:8px}.site-nav{justify-content:flex-start;max-width:none}.site-nav a{min-height:32px;padding:0 8px;font-size:13px}.topbar{align-items:flex-start}h1{font-size:24px}.topbar-actions{width:100%;flex-shrink:0;justify-content:flex-end}.recording-actions,.video-actions{width:100%;justify-content:flex-end}.recording-cluster{grid-column:span 4;justify-content:flex-end;flex-wrap:wrap;margin-left:0}.topbar-mode{justify-content:stretch}.mode-toggle-prominent{width:100%;min-width:0}.recording-player,.video-player{width:min(220px,100%);min-width:0}.focus-reader .restore-editor-button{max-width:112px;padding:0 10px;font-size:13px}.control-bar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.primary-button,.range-control{grid-column:span 4}.running-indicator{justify-self:start}.video-live-preview{top:10px;width:112px;transform:translate(-50%)}.control-button,.text-button,.icon-button{min-width:0}.range-control{grid-template-columns:46px 1fr}.script-slot-button{min-height:36px;padding:0 8px;font-size:13px}.status-strip span{max-width:100%}.reader-scroll{--cue-font-size: min(12vw, 52px)}.cue-line{margin-bottom:20px;padding:8px 10px}.segment-jump-controls{right:6px;gap:6px}.segment-jump-button{width:54px;min-height:46px;padding:5px 3px}.segment-jump-icon{font-size:19px}.segment-jump-label{font-size:11px}.live-panel{grid-template-columns:1fr;gap:4px}.record-panel{grid-template-columns:1fr;gap:8px}.recording-player,.video-player{width:100%;min-width:0}}