:root{--bg:#f6f8fb;--paper:#fff;--ink:#18243b;--dark:#263454;--muted:#6d7890;--line:#e4e9f0;--line2:#edf0f5;--main:#3b638e;--main-light:#edf3fa;--teal:#178b77;--teal-light:#e7f5f1;--warn:#bc7437;--red:#c34f60;--radius:16px;--sh:0 4px 18px rgba(25,39,72,.035);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft Yahei',sans-serif;font-size:14px;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{overflow-x:hidden}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a{color:inherit}input,textarea,select{outline:none}input:focus,select:focus,textarea:focus{border-color:#85a4c2!important;box-shadow:0 0 0 3px rgba(83,123,161,.12)}.icon{display:inline-flex;align-items:center;justify-content:center;width:19px;height:19px;flex-shrink:0}.icon svg{width:100%;height:100%;stroke:currentColor;stroke-width:1.85;fill:none;stroke-linecap:round;stroke-linejoin:round}.app-shell{display:flex;min-height:100vh}.sidebar{width:246px;flex:0 0 246px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:28px 14px 20px;position:sticky;top:0;height:100vh;z-index:12}.brand{display:flex;gap:12px;align-items:center;padding:3px 11px 32px;cursor:pointer}.brand-mark{height:39px;width:39px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:white;background:#253658;border-radius:12px;position:relative}.brand-mark:after{content:'';background:#98dfcd;position:absolute;width:7px;height:7px;right:6px;top:6px;border-radius:50%}.brand strong{font-size:19px;display:block;letter-spacing:1px}.brand span{font-size:9px;color:#91a0af;letter-spacing:1px;font-weight:700}.side-nav{display:grid;gap:4px}.nav-caption{font-size:10px;letter-spacing:1.5px;color:#adb7c5;font-weight:800;padding:22px 17px 9px}.nav-btn{width:100%;height:44px;border:0;background:transparent;display:flex;gap:12px;align-items:center;text-align:left;color:#707e95;padding:0 15px;border-radius:10px;font-weight:650}.nav-btn:hover{background:#f4f6fa;color:#344567}.nav-btn.active{background:#e9eff8;color:#29476e}.nav-btn .icon{width:18px}.side-bottom{margin-top:auto}.local-pill{font-size:11px;color:#8290a1;display:flex;align-items:center;gap:8px;padding:15px 17px}.online-dot{width:6px;height:6px;background:#22a585;border-radius:50%}.main-frame{min-width:0;flex:1}.topbar{height:74px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 42px;background:rgba(255,255,255,.84);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.top-path{font-size:13px;font-weight:650;color:#758199}.top-right{display:flex;align-items:center;gap:10px}.date-chip{font-size:12px;color:#a0a9b8;margin-right:10px}.icon-btn{height:35px;width:35px;border:1px solid var(--line);background:white;border-radius:10px;display:grid;place-items:center;color:#6d7890}.icon-btn:hover{color:var(--dark);border-color:#bdcadd}.view{max-width:1420px;margin:auto;padding:36px 42px 90px;min-height:calc(100vh - 74px)}.page-heading{display:flex;justify-content:space-between;gap:14px;align-items:flex-end;margin-bottom:25px}.eyebrow{font-size:10px;color:#738cad;letter-spacing:2px;font-weight:800;text-transform:uppercase}.page-heading h1{font-size:28px;margin:8px 0 6px;letter-spacing:-.7px;line-height:1.28;font-weight:780}.page-heading p{margin:0;color:var(--muted);font-size:13px;line-height:1.8}.heading-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.btn{border:1px solid #dbe1e9;border-radius:10px;background:#fff;min-height:40px;padding:9px 15px;color:#4a5a72;font-weight:650;display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap}.btn:hover{border-color:#a9b9cd;background:#f9fbfd}.btn.primary{background:#2c466d;color:white;border-color:#2c466d}.btn.primary:hover{background:#203654}.btn.teal{background:#168976;color:white;border-color:#168976}.btn.teal:hover{background:#117460}.btn.ghost{background:transparent;border-color:transparent}.btn.ghost:hover{background:#edf0f5}.btn.danger{color:#b84658;border-color:#f1dfe3}.btn.sm{min-height:32px;font-size:12px;padding:6px 10px;border-radius:8px}.btn.big{min-height:52px;padding:12px 22px;border-radius:12px;font-size:15px}.btn.full{width:100%}.btn .icon{width:16px;height:16px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--sh)}.card-pad{padding:24px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.section-head h2{font-size:16px;margin:0;letter-spacing:-.2px}.section-head .muted{font-size:12px}.muted,.hint{color:var(--muted)}.help{font-size:12px;color:#8290a1;line-height:1.75}.micro{font-size:11px;color:#98a3b2}.tag{font-size:11px;border-radius:6px;padding:4px 7px;background:#f0f3f7;color:#748096;font-weight:700;display:inline-flex;align-items:center;gap:4px}.tag.blue{background:#eaf1fa;color:#4a6890}.tag.teal{background:#e7f4f0;color:#167e6b}.tag.orange{background:#fcf2e8;color:#ad794b}.tag.red{background:#fff0f2;color:#ac5361}.tagline{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.hero{border-radius:19px;background:linear-gradient(115deg,#253653 0%,#334f70 62%,#3b6a78 100%);padding:34px 37px;color:white;min-height:228px;display:flex;justify-content:space-between;gap:24px;align-items:center;position:relative;overflow:hidden}.hero:after{content:'';width:360px;height:360px;border:1px solid #ffffff22;border-radius:50%;position:absolute;right:-120px;top:-100px;box-shadow:0 0 0 50px #ffffff09,0 0 0 104px #ffffff06}.hero-inner{position:relative;z-index:1;max-width:560px}.hero-eyebrow{font-size:11px;font-weight:750;letter-spacing:2px;color:#afd4d9}.hero h2{margin:12px 0 8px;font-size:29px;line-height:1.35}.hero p{font-size:13px;line-height:1.75;color:#cad9e7;max-width:540px;margin:0 0 22px}.hero .btn{background:white;color:#263f63;border-color:white}.hero-number{position:relative;z-index:1;min-width:145px;border-left:1px solid #ffffff37;padding-left:26px}.hero-number b{display:block;font-size:39px;font-weight:670}.hero-number span{color:#c1d2e2;font-size:12px}.grid{display:grid;gap:18px}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:18px 0 30px}.small-stat{padding:21px 23px;background:white;border-radius:14px;border:1px solid var(--line)}.small-stat .val{font-size:27px;font-weight:700;display:block;margin-top:12px}.small-stat .lbl{color:#8390a2;font-size:12px}.track-card{padding:24px;transition:transform .15s,border-color .15s}.track-card:hover{border-color:#b9c9d9;transform:translateY(-1px)}.track-head{display:flex;gap:11px;align-items:center}.track-icon{height:42px;width:42px;display:grid;place-items:center;border-radius:12px;color:#336289;background:#edf3fa}.track-icon.green{background:#eaf7f2;color:#178a76}.track-card h3{margin:0 0 4px;font-size:18px}.track-card p{line-height:1.78;font-size:13px;color:var(--muted);min-height:62px}.track-acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.between{display:flex;align-items:center;justify-content:space-between;gap:10px}.split-line{height:1px;background:var(--line2);margin:22px 0}.select,input[type='text'],input[type='number'],input[type='password'],textarea{width:100%;padding:11px 12px;border:1px solid #dce3ed;border-radius:10px;background:white;color:var(--ink);line-height:1.5}.select{cursor:pointer}.textarea{min-height:120px;resize:vertical;line-height:1.7}.field{margin-bottom:18px}.field:last-child{margin-bottom:0}.field label,.field-label{display:block;font-size:12px;color:#56667e;font-weight:700;margin:0 0 8px}.row{display:flex;gap:10px;align-items:center}.grow{flex:1;min-width:0}.chips{display:flex;flex-wrap:wrap;gap:7px}.chip{border:1px solid #dce3ed;background:white;color:#738198;border-radius:9px;padding:7px 11px;font-size:12px}.chip.active{border-color:#436786;background:#edf3fa;color:#294e76;font-weight:700}.chip:hover{border-color:#9aaec3}.empty-state{border:1px dashed #d7dfe8;border-radius:15px;padding:50px 24px;text-align:center;background:#fcfdff;color:#8190a3}.empty-state h3{font-size:17px;color:#3a4a62;margin:12px 0 8px}.empty-state p{font-size:13px;line-height:1.8;max-width:490px;margin:0 auto 18px}.empty-icon{height:45px;width:45px;color:#7d92aa;margin:auto;display:grid;place-items:center;border-radius:15px;background:#edf3f8}.empty-icon .icon{width:25px;height:25px}.q-item{border:1px solid var(--line);border-radius:12px;padding:15px 16px;display:flex;justify-content:space-between;gap:12px;align-items:center;background:#fff;min-width:0}.q-item+.q-item{margin-top:9px}.q-main{min-width:0}.q-title{font-size:14px;font-weight:750;margin:6px 0;line-height:1.4}.q-sub{font-size:12px;color:#8692a3}.q-acts{display:flex;gap:6px;flex-shrink:0}.q-desc{color:#8390a1;font-size:12px;line-height:1.7}.section-gap{margin-top:26px}.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:17px;align-items:center}.filter-bar .select{width:auto;min-width:130px}.filter-bar .search{max-width:290px}.lib-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:20px}.batch-item{display:block;border:0;text-align:left;padding:13px 15px;border-radius:10px;background:transparent;color:#728095;width:100%}.batch-item.active{background:#edf3fa;color:#34587e}.batch-item strong{display:block;font-size:13px;margin-bottom:5px}.batch-item span{font-size:11px}.panel-title{font-size:12px;font-weight:800;color:#96a0ae;letter-spacing:1px;margin:0 0 16px}.train-layout{max-width:960px;margin:auto}.train-topline{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 18px}.progress{height:5px;flex:1;max-width:300px;background:#e1e8f0;border-radius:8px;overflow:hidden}.progress-inner{height:100%;background:#27927e;border-radius:8px;transition:width .2s}.train-sheet{padding:38px 46px 30px;min-height:450px}.train-sheet h1{font-size:26px;line-height:1.42;margin:13px 0 21px;letter-spacing:-.4px}.train-prompt{font-size:16px;color:#2d3c53;line-height:1.95;white-space:pre-wrap}.train-reading{font-size:17px;line-height:2.15;white-space:pre-wrap;color:#253348;max-width:740px}.info-box{padding:17px 19px;background:#f6f8fb;border:1px solid #e7ecf1;border-radius:11px;margin:18px 0}.info-box-label{font-size:12px;color:#8290a0;font-weight:700;margin-bottom:8px}.info-box p{white-space:pre-wrap;margin:0;font-size:15px;line-height:1.85}.train-foot{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-top:24px;flex-wrap:wrap}.speak-panel{padding:30px 30px;border-radius:14px;background:#f7f9fc;border:1px solid #e9edf2;text-align:center;margin:25px 0}.speak-circle{width:95px;height:95px;border-radius:50%;background:#e5f2ee;color:#198774;display:grid;place-items:center;margin:0 auto 16px;position:relative}.speak-circle .icon{width:39px;height:39px}.speak-circle.recording{background:#ffe9eb;color:#b74456;animation:pulse 1.5s ease-in-out infinite}.speak-clock{font-size:25px;font-variant-numeric:tabular-nums;font-weight:720;letter-spacing:1px}.speak-muted{font-size:12px;color:#8a97a7;margin:7px 0 20px}.speak-acts{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}.speak-acts .btn{min-width:150px}.audio-list{display:grid;gap:10px;margin:22px 0}.audio-attempt{padding:15px;border:1px solid #e0e6ed;border-radius:12px;background:#fff}.audio-attempt .between{margin-bottom:10px}.audio-attempt audio{width:100%;height:34px}.audio-meta{font-size:11px;color:#8d9aac}.transcript-box{background:#f8fafc;border:1px solid #e7ecf0;border-radius:10px;padding:16px;white-space:pre-wrap;line-height:1.9;color:#56647a}.outline-list{padding:0;margin:10px 0 0;list-style:none;display:grid;gap:9px}.outline-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.6}.outline-list li:before{content:'';height:7px;width:7px;margin-top:8px;background:#79a5b9;border-radius:50%;flex-shrink:0}.study-tabs{display:flex;gap:6px;background:#f0f3f7;padding:5px;border-radius:10px;align-self:start;width:max-content;max-width:100%;margin:20px 0}.study-tabs button{border:0;background:transparent;color:#758398;font-size:12px;font-weight:750;border-radius:8px;padding:9px 12px}.study-tabs button.active{background:white;color:#2f4e75;box-shadow:0 1px 3px #25345210}.studio-layout{display:grid;grid-template-columns:minmax(225px,.88fr) minmax(300px,1.16fr) minmax(290px,1.12fr);align-items:start;gap:15px}.studio-layout .card-pad{padding:19px}.studio-box{min-width:0}.studio-box h2{font-size:15px;margin:0}.studio-control{padding-top:19px}.studio-bp{border:1px solid var(--line);border-radius:12px;padding:15px;margin:10px 0;background:#fff}.studio-bp h3{font-size:13px;margin:0}.studio-bp .bp-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:13px}.studio-bp label{font-size:11px;color:#8290a1;font-weight:650;display:block}.studio-bp label .select,.studio-bp label input{margin-top:5px}.studio-bp .subrow{display:flex;gap:5px;flex-wrap:wrap;margin-top:11px}.prompt-preview{background:#f8fafc;border-radius:10px;border:1px solid #e6eaf0;overflow:auto;max-height:calc(100vh - 248px);padding:17px;font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;color:#536176;min-height:280px}.studio-sticky{position:sticky;top:90px}.studio-mobile-tabs{display:none}.badge-warning{padding:13px 16px;background:#fff8ee;border:1px solid #f2e2c9;border-radius:11px;font-size:12px;line-height:1.7;color:#98713b}.import-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.import-result{padding:15px;border:1px solid #e2e8f0;border-radius:11px;margin-top:9px;background:white}.import-result label{display:flex;align-items:center;gap:10px}.import-result input[type='checkbox']{height:16px;width:16px;accent-color:#31567d}.import-result .result-meta{font-size:11px;color:#8493a6;margin-top:5px;margin-left:26px}.import-result .result-issue{font-size:11px;color:#a56735;margin:7px 0 0 26px}.stat-list{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat-large{padding:19px 22px}.stat-large strong{display:block;font-size:29px;margin:11px 0}.stat-large span{font-size:12px;color:#8b98a9}.history-item{border-bottom:1px solid var(--line2);padding:17px 0;display:flex;justify-content:space-between;align-items:center;gap:15px}.history-item:last-child{border-bottom:0}.history-item strong{display:block;margin:6px 0}.history-item p{font-size:12px;color:#8a96a7;margin:0}.recording-dot{height:7px;width:7px;display:inline-block;vertical-align:middle;background:#dc5964;border-radius:50%;animation:pulse 1s infinite}.settings-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:12px 0;padding:13px 0;border-top:1px solid var(--line2)}.setting-row strong{font-size:13px}.setting-row p{margin:5px 0 0;color:#8190a1;font-size:12px;line-height:1.7}.switch{width:42px;height:23px;background:#d3dce6;border:0;border-radius:40px;position:relative;flex-shrink:0}.switch:after{content:'';position:absolute;background:white;border-radius:50%;height:17px;width:17px;left:3px;top:3px;transition:.2s}.switch.on{background:#2a8e7e}.switch.on:after{transform:translateX(19px)}.dialog-overlay{position:fixed;inset:0;background:#1422398c;z-index:40;display:grid;place-items:center;padding:22px}.dialog{background:white;border-radius:18px;box-shadow:0 25px 70px #1526413b;width:min(650px,100%);max-height:88vh;overflow:auto}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:21px 25px 16px;border-bottom:1px solid var(--line)}.dialog-head h2{margin:0;font-size:18px}.dialog-body{padding:24px 25px}.dialog-footer{display:flex;gap:9px;justify-content:flex-end;padding:0 25px 24px}.toast-stack{position:fixed;right:25px;bottom:24px;z-index:100;display:grid;gap:8px}.toast{padding:12px 17px;color:white;background:#273856;border-radius:10px;box-shadow:0 8px 30px #18283b30;font-size:12px}.toast.error{background:#ad4651}.mobile-nav{display:none}.hide{display:none!important}@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
@media(max-width:1300px){.sidebar{width:208px;flex-basis:208px}.topbar{padding:0 26px}.view{padding:30px 26px 90px}.studio-layout{grid-template-columns:minmax(210px,.83fr) minmax(280px,1.08fr) minmax(260px,1fr);gap:12px}.studio-layout .card-pad{padding:15px}}
@media(max-width:1080px){.sidebar{width:190px;flex-basis:190px}.view{padding:27px 20px 90px}.studio-layout{grid-template-columns:1fr 1fr}.studio-sticky{grid-column:span 2;position:static}.prompt-preview{max-height:380px}}
@media(max-width:760px){.app-shell{display:block}.sidebar{display:none}.main-frame{width:100%}.topbar{height:56px;padding:0 17px;position:sticky}.topbar .date-chip{display:none}.view{padding:22px 16px calc(100px + env(safe-area-inset-bottom));min-height:calc(100dvh - 56px)}.mobile-nav{position:fixed;bottom:0;left:0;right:0;height:calc(61px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:flex;justify-content:space-around;align-items:center;background:#fff;border-top:1px solid var(--line);z-index:20;box-shadow:0 -2px 15px #2e486009}.mobile-nav button{height:53px;min-width:56px;padding:7px 5px 4px;border:0;background:transparent;display:flex;flex-direction:column;gap:4px;align-items:center;justify-content:center;color:#9aa6b6;font-size:10px;font-weight:700}.mobile-nav button .icon{width:22px;height:22px}.mobile-nav button.active{color:#315479}.mobile-nav button.active:before{content:'';position:absolute;bottom:calc(56px + env(safe-area-inset-bottom));height:3px;width:25px;border-radius:3px;background:#315479}.page-heading{align-items:flex-start;margin-bottom:19px}.page-heading h1{font-size:23px}.page-heading p{font-size:12px}.page-heading .heading-actions{max-width:200px;justify-content:flex-end}.card-pad{padding:18px}.hero{padding:26px 23px;min-height:226px}.hero h2{font-size:24px}.hero p{font-size:12px;max-width:300px}.hero-number{display:none}.cols-2,.cols-3,.home-stats,.stat-list,.settings-grid,.import-grid,.lib-layout{grid-template-columns:1fr}.home-stats{grid-template-columns:repeat(3,1fr);gap:8px}.small-stat{padding:13px 11px}.small-stat .val{font-size:23px;margin-top:9px}.small-stat .lbl{font-size:10px}.track-card{padding:20px}.track-card p{min-height:auto}.train-sheet{padding:24px 19px;min-height:380px}.train-sheet h1{font-size:21px;margin:13px 0 16px}.train-reading{font-size:16px;line-height:2}.train-prompt{font-size:15px}.speak-panel{margin:18px 0;padding:23px 12px}.speak-circle{width:82px;height:82px}.studio-layout{display:block}.studio-box{display:none}.studio-box.active{display:block}.studio-sticky{position:static}.studio-mobile-tabs{display:flex;gap:5px;background:#edf0f5;border-radius:11px;padding:5px;margin:0 0 13px}.studio-mobile-tabs button{flex:1;background:transparent;border:0;padding:11px 5px;color:#8794a4;font-weight:700;border-radius:8px}.studio-mobile-tabs button.active{background:white;color:#314f73;box-shadow:0 1px 4px #23345a15}.prompt-preview{max-height:none;min-height:280px}.q-item{align-items:flex-start;flex-direction:column}.q-acts{width:100%;justify-content:flex-end}.filter-bar .search{max-width:none;flex:1}.filter-bar .select{min-width:110px}.dialog-overlay{padding:10px}.dialog{max-height:91dvh}.dialog-head,.dialog-body{padding:19px}.dialog-footer{padding:0 19px 20px}.toast-stack{bottom:calc(70px + env(safe-area-inset-bottom));left:16px;right:16px}.top-path{font-size:12px}.section-gap{margin-top:18px}}
@media(max-width:390px){.page-heading{flex-wrap:wrap}.page-heading .heading-actions{max-width:100%}.studio-bp .bp-fields{grid-template-columns:1fr 1fr}.speak-acts .btn{min-width:126px}.hero h2{font-size:22px}}
/* 高频训练：手机底部固定录音入口，不必滚到整张卡片最下方 */
.mobile-record-dock{display:none}
@media(max-width:760px){
 .mobile-record-dock{display:flex;position:fixed;bottom:calc(65px + env(safe-area-inset-bottom));left:10px;right:10px;align-items:center;justify-content:space-between;gap:9px;background:rgba(255,255,255,.98);padding:11px 12px;border:1px solid #dce6e9;border-radius:13px;box-shadow:0 8px 30px #182c4940;z-index:18;backdrop-filter:blur(12px)}
 .mobile-record-dock strong{display:block;font-size:12px;color:#2d435c}
 .mobile-record-dock span{font-size:10px;color:#8997a8;line-height:1.5}
 .mobile-record-dock .btn{font-size:12px;padding:10px;min-height:41px}
 body:has(.mobile-record-dock) .view{padding-bottom:calc(178px + env(safe-area-inset-bottom))}
 .train-sheet>.info-box{padding:12px 14px;margin:11px 0}
 .train-sheet>.info-box p{font-size:14px;line-height:1.78}
 .train-sheet>.info-box .info-box-label{margin-bottom:4px}
}