:root{color:#1b1b1f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--stroke:#005a9e1f;--panel:#ffffffd6;--panel-strong:#fffffff0;--text-secondary:#61636c;--shadow:0 24px 56px #0f172a14, 0 4px 14px #0f172a0a;background:radial-gradient(circle at 0 0,#60a5fa29,#0000 24%),radial-gradient(circle at 100% 0,#bfdbfe52,#0000 26%),linear-gradient(#f5f9ff 0%,#eef5ff 45%,#f7fbff 100%);font-family:Segoe UI Variable,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#app{min-height:100%}body{margin:0}body.modal-open{overflow:hidden}button,input,textarea,select,video{font:inherit}.layout-shell{min-height:100vh;padding:18px}.status-toast{z-index:1200;color:#fff;background:#0f172aeb;border-radius:16px;max-width:min(420px,100vw - 36px);padding:14px 16px;position:fixed;top:18px;right:18px;box-shadow:0 18px 40px #02061747}.app-frame{max-width:1800px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffff6b;border:1px solid #ffffffb8;border-radius:28px;margin:0 auto;padding:20px}.title-bar,.header-actions,.content-grid,.summary-strip,.card-head,.two-col,.three-col,.action-row,.editor-topline,.role-row,.presentation-topbar,.presentation-metrics,.presentation-grid,.stage-meta{gap:16px;display:flex}.title-bar,.card-head,.editor-topline,.role-row,.presentation-topbar,.stage-meta{justify-content:space-between;align-items:center}.summary-strip{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:18px;display:grid}.content-grid{align-items:flex-start;margin-top:18px}.left-column{flex-direction:column;flex:0 0 520px;gap:18px;display:flex}.right-column{flex:1;min-width:0}.surface-card{border:1px solid var(--stroke);background:var(--panel);border-radius:24px;padding:20px;box-shadow:inset 0 1px #ffffffe0}.caption{color:#0f6cbd;letter-spacing:.18em;text-transform:uppercase;margin:0 0 8px;font-size:12px}h1,h2{letter-spacing:-.02em;margin:0}h1{font-size:clamp(30px,4vw,44px)}h2{font-size:24px}.metric-card{background:var(--panel-strong);border:1px solid var(--stroke);border-radius:22px;padding:18px 20px}.metric-card span,.field-block span,.file-block span,.metric-pill span{color:var(--text-secondary);margin-bottom:8px;font-size:13px;display:block}.metric-card strong,.metric-pill strong{font-size:clamp(24px,2.8vw,34px)}.button{cursor:pointer;border:1px solid #005a9e24;border-radius:999px;padding:11px 18px;transition:transform .16s,background .16s,box-shadow .16s,border-color .16s}.hidden-input{display:none}.button:hover{transform:translateY(-1px)}.button.primary{color:#fff;background:linear-gradient(#0f6cbd,#115ea3);box-shadow:0 12px 26px #0f6cbd38}.button.subtle{color:#0f172a;background:#ffffffc2}.form-stack,.role-editor,.editor-list,.participant-list,.role-pills{flex-direction:column;gap:16px;display:flex}.room-panel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.room-subcard,.member-stage-card{background:#ffffffc2;border:1px solid #005a9e1a;border-radius:18px;padding:14px}.room-link-box{background:#f8fbffe6;border:1px solid #005a9e1a;border-radius:18px;padding:14px}.room-link{word-break:break-all;color:#0f6cbd;display:block}.room-subtitle{color:var(--text-secondary);margin-bottom:10px;font-size:13px;display:block}.participant-chip{background:#f0f7ffe6;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;display:flex}.participant-chip span{color:var(--text-secondary);font-size:13px}.role-pills{flex-flow:wrap}.role-pill.selected,.button.subtle.selected{background:#e0effff2;border-color:#0f6cbd6b}.field-block{flex-direction:column;display:flex}.two-col,.three-col{align-items:stretch}.two-col>*,.three-col>*{flex:1;min-width:0}.control{color:#111827;background:#ffffffeb;border:1px solid #005a9e29;border-radius:14px;width:100%;padding:12px 14px;box-shadow:inset 0 1px #ffffffe0,0 1px 3px #0f172a0a}.control:focus{border-color:#0f6cbd57;outline:2px solid #0f6cbd42}.textarea{resize:vertical}.file-block{background:#ffffff9e;border:1px dashed #0f6cbd47;border-radius:18px;flex-direction:column;justify-content:center;min-height:88px;padding:16px;display:flex;position:relative;overflow:hidden}.file-block input{opacity:0;cursor:pointer;position:absolute;inset:0}.helper-text,.error-text{margin:0;font-size:13px}.helper-text{color:var(--text-secondary)}.error-text{color:#a4262c}.role-row,.editor-item{background:#ffffffc2;border:1px solid #005a9e1a;border-radius:18px;padding:14px}.role-row .control{flex:1}.editor-item{flex-direction:column;gap:14px;display:flex}.editor-list{max-height:920px;padding-right:6px;overflow:auto}.editor-topline{color:var(--text-secondary)}.presentation-modal{z-index:999;position:fixed;inset:0}.presentation-backdrop{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0307127a;position:absolute;inset:0}.presentation-dialog{z-index:1;background:radial-gradient(circle at 0 0,#60a5fa14,#0000 20%),linear-gradient(#fffffff2,#f6fafffa);border:1px solid #ffffff61;border-radius:30px;flex-direction:column;gap:16px;width:calc(100vw - 32px);height:calc(100vh - 32px);margin:16px;padding:18px;display:flex;position:relative;box-shadow:0 30px 80px #0206173d}.presentation-topbar,.presentation-metrics{flex-wrap:wrap}.metric-pill{background:#ffffffc2;border:1px solid #005a9e24;border-radius:18px;padding:12px 16px}.prompt-banner{color:#fff;text-align:center;background:linear-gradient(90deg,#0f6cbd,#115ea3);border-radius:18px;padding:16px 18px;font-size:clamp(18px,1.8vw,26px)}.presentation-grid{flex:1;align-items:stretch;min-height:0}.video-panel{flex-direction:column;flex:0 0 360px;gap:12px;display:flex}.member-role{color:#0f6cbd;font-size:28px;display:block}.member-role.small{font-size:22px}.member-prompter-panel{flex-direction:column;flex:1;gap:16px;min-width:0;display:flex}.member-mode-switch{flex-wrap:wrap;gap:12px;display:flex}.member-card-stack{flex-direction:column;gap:16px;min-height:0;display:flex}.member-line-card,.member-countdown-view{background:linear-gradient(#fffffff7,#f4f9fffa);border:1px solid #005a9e1f;border-radius:28px;padding:22px;box-shadow:inset 0 1px #fffffff5,0 14px 30px #0f172a0f}.member-line-card.current{min-height:34vh}.member-line-card.next{min-height:26vh}.member-line-card.empty{opacity:.75}.member-card-role{color:#0f6cbd;margin-bottom:14px;font-size:20px;display:block}.member-primary,.member-secondary{margin:0;line-height:1.3}.member-primary{color:#111827;font-size:clamp(28px,5vw,52px);font-weight:700}.member-primary.compact{text-align:center}.member-secondary{color:#4b5563;margin-top:12px;font-size:clamp(18px,2.8vw,30px)}.member-secondary.compact{text-align:center}.member-countdown-inline,.member-countdown-meta{color:var(--text-secondary);justify-content:space-between;gap:12px;margin-top:18px;font-size:14px;display:flex}.member-countdown-view{text-align:center;flex-direction:column;flex:1;justify-content:center;min-height:56vh;display:flex}.countdown-big{color:#0f6cbd;margin:10px 0 14px;font-size:clamp(72px,16vw,150px);line-height:1;display:block}.role-picker-dialog{z-index:1;background:linear-gradient(#fffffff7,#f6fafffa);border:1px solid #ffffff61;border-radius:28px;width:min(680px,100vw - 32px);margin:10vh auto 0;padding:20px;position:relative;box-shadow:0 24px 70px #02061738}.modal-pills{margin:20px 0}.prompter-panel{background:linear-gradient(#fffffff5,#f6fafffa);border:1px solid #005a9e1f;border-radius:22px;flex:1;min-width:0;position:relative;overflow:hidden}.prompter-list{height:100%;padding:30vh 24px;overflow-y:auto}.lyrics-mask{pointer-events:none;z-index:2;height:18%;position:absolute;left:0;right:0}.lyrics-mask-top{background:linear-gradient(#f7fafffa,#f7faff00);top:0}.lyrics-mask-bottom{background:linear-gradient(#f7faff00,#f7fafffa);bottom:0}.stage-video{background:#0b2239;border-radius:18px;width:100%;min-height:220px}.stage-line{opacity:.26;filter:blur(.2px);background:#ffffffd6;border:1px solid #005a9e1a;border-radius:22px;margin-bottom:16px;padding:22px 22px 24px;transition:transform .18s,border-color .18s,box-shadow .18s,background .18s,opacity .18s,filter .18s;transform:scale(.92)}.stage-line.distance-0{opacity:1;filter:blur();transform:scale(1.012)}.stage-line.distance-1{opacity:.72;filter:blur();transform:scale(.975)}.stage-line.distance-2{opacity:.48;transform:scale(.948)}.stage-line.distance-3{opacity:.32;transform:scale(.928)}.stage-line.active{background:linear-gradient(#fff,#f4f9ff);border-color:#0f6cbd66;transform:scale(1.012);box-shadow:0 16px 34px #0f6cbd1a,inset 0 1px #ffffffeb}.stage-meta{color:var(--text-secondary);margin-bottom:14px;font-size:16px}.stage-role{color:#0f6cbd;font-weight:700}.stage-zh,.stage-en,.stage-primary,.stage-secondary{margin:0;line-height:1.35}.stage-primary{font-size:var(--presentation-font-size,44px);color:#111827;font-weight:700}.stage-secondary{font-size:calc(var(--presentation-font-size,44px) * var(--secondary-scale,.54));color:#4b5563;margin-top:12px}@media (width<=1440px){.content-grid,.presentation-grid{flex-direction:column}.left-column,.right-column,.video-panel{flex-basis:auto;width:100%}.room-panel-grid{grid-template-columns:1fr}}@media (width<=860px){.layout-shell{padding:10px}.app-frame,.presentation-dialog{border-radius:20px;padding:12px}.summary-strip,.two-col,.three-col,.title-bar,.card-head,.editor-topline,.role-row,.presentation-topbar{flex-direction:column;grid-template-columns:1fr;align-items:stretch}.prompter-list{padding:18vh 14px}.member-mode-switch{flex-direction:column}.member-line-card.current,.member-line-card.next,.member-countdown-view{min-height:auto}.stage-primary{font-size:min(var(--presentation-font-size,44px), 34px)}.stage-secondary{font-size:min(calc(var(--presentation-font-size,44px) * var(--secondary-scale,.54)), 22px)}}