.contact-actions{flex-wrap:wrap;gap:8px;display:flex}.contact-actions button{white-space:nowrap}.contact-backdrop{z-index:1000;background:#13233788;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.contact-dialog{box-sizing:border-box;background:#fff;border-radius:16px;width:min(520px,100%);max-height:90dvh;padding:24px;overflow:auto;box-shadow:0 16px 60px #10233b33}.contact-heading{justify-content:space-between;align-items:center;gap:12px;display:flex}.contact-heading h2{margin:0 0 16px}.contact-dialog label{gap:6px;margin:12px 0;display:grid}.contact-dialog input,.contact-dialog select,.contact-dialog textarea{box-sizing:border-box;width:100%;font:inherit;border:1px solid #ccd6e2;border-radius:8px;padding:10px}.contact-note{color:#64748b;font-size:12px;line-height:1.6}.feedback-trap{display:none}.wechat-content{text-align:center}.wechat-content img{width:100%;max-width:280px;height:auto}.contact-dialog button:disabled{opacity:.6}@media (width<=600px){.contact-dialog{padding:18px}.contact-actions{gap:5px}.contact-actions button{padding:6px 9px;font-size:12px}}.contact-actions{align-items:center;gap:10px}.contact-actions .header-contact{appearance:none;cursor:pointer;border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:9px 13px;font-family:inherit;font-size:13px;font-weight:600;line-height:1.4;transition:background .16s,border-color .16s,box-shadow .16s,transform .16s;display:inline-flex;box-shadow:0 2px 5px #183b6606}.header-contact svg{flex:none;width:18px;height:18px}.contact-actions .header-contact--wechat{color:#14756b;background:#eef9f6;border-color:#cdebe3}.contact-actions .header-contact--feedback{color:#365ab5;background:#f0f5ff;border-color:#d8e4fb}@media (hover:hover){.contact-actions .header-contact--wechat:hover{background:#dff3ed;border-color:#a8d8ca}.contact-actions .header-contact--feedback:hover{background:#e3edff;border-color:#b4caf4}.contact-actions .header-contact:hover{transform:translateY(-1px);box-shadow:0 4px 10px #183b6610}}.contact-actions .header-contact:active{box-shadow:none;transform:translateY(0)}.contact-actions .header-contact:focus-visible{outline-offset:3px;outline:3px solid #78d1e5}@media (width<=600px){.contact-actions{gap:8px}.contact-actions .header-contact{border-radius:11px;min-height:44px;padding:10px 12px;font-size:12px}.header-contact svg{width:17px;height:17px}}@media (prefers-reduced-motion:reduce){.contact-actions .header-contact{transition:none}.contact-actions .header-contact:hover{transform:none}}.feedback-images{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:10px;display:grid}.feedback-images figure{border:1px solid #dbe5f0;border-radius:10px;min-width:0;margin:0;overflow:hidden}.feedback-images img{object-fit:contain;background:#f5f8fc;width:100%;height:90px;display:block}.feedback-images figcaption{justify-content:space-between;align-items:center;gap:4px;padding:6px;font-size:11px;display:flex}.feedback-images button{color:#b42318;cursor:pointer;background:0 0;border:0;padding:6px}@media (width<=400px){.feedback-images{grid-template-columns:repeat(2,minmax(0,1fr))}}.banner-visual[data-v-af81482d]{background-repeat:no-repeat;width:100%;position:relative;overflow:hidden;container-type:inline-size}.banner-layer[data-v-af81482d]{white-space:pre-wrap;overflow-wrap:anywhere;pointer-events:none;line-height:1.2;position:absolute}.editing .banner-layer[data-v-af81482d]{pointer-events:auto;cursor:move;touch-action:none;-webkit-user-select:none;user-select:none;outline:1px dashed #b9dcff;min-height:1.2em}.editing .selected[data-v-af81482d]{background:#446ccf1f;outline:2px solid #ffbf47}.banner-editor[data-v-441959c0]{border:1px solid #dce8f5;border-radius:12px;padding:16px}.banner-editor h3[data-v-441959c0]{margin:0}.editor-hint[data-v-441959c0]{color:#71849a;font-size:13px;line-height:1.6}.banner-design-preview[data-v-441959c0]{border:1px solid #b9d0ec;border-radius:8px;margin-bottom:14px;overflow:hidden}.editor-controls[data-v-441959c0]{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:12px 0;display:grid}.editor-controls label[data-v-441959c0]{flex-direction:column;gap:6px;font-size:13px;display:flex}.editor-controls .wide[data-v-441959c0]{grid-column:1/-1}.editor-controls input[data-v-441959c0],.editor-controls select[data-v-441959c0],.editor-controls textarea[data-v-441959c0]{min-width:0;max-width:100%}.editor-controls input[type=color][data-v-441959c0]{width:100%;height:32px;padding:2px}.range-tabs button[data-v-441959c0]{cursor:pointer}@media (width<=640px){.editor-controls[data-v-441959c0]{grid-template-columns:1fr 1fr}.banner-editor[data-v-441959c0]{padding:10px}}:root{color:#183b66;font-synthesis:none;background:#f5f8fc;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}button,input,select{font:inherit}.app-shell{min-height:100vh}.topbar{z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff0;border-bottom:1px solid #dce8f5;justify-content:space-between;align-items:center;padding:12px 16px;display:flex;position:sticky;top:0}.topbar strong{font-size:18px;display:block}.topbar small{color:#6b7f95;margin-top:2px;display:block}.privacy{color:#365ab5;background:#edf5ff;border-radius:999px;padding:6px 10px;font-size:12px}main{width:min(980px,100%);margin:auto;padding:16px}.card{background:#fff;border:1px solid #e2ebf4;border-radius:18px;box-shadow:0 8px 25px #183b660d}.hero{text-align:center;padding:36px 20px}.logo{color:#fff;background:#446ccf;border-radius:22px;place-items:center;width:72px;height:72px;margin:0 auto 14px;font-size:36px;font-weight:800;display:grid}.hero h1{margin:8px 0;font-size:26px}.hero p{color:#6b7f95;line-height:1.7}.primary-btn,.secondary-btn{cursor:pointer;border-radius:14px;width:min(360px,100%);margin:12px auto;padding:14px 18px;font-weight:700;display:block}.primary-btn{color:#fff;background:#446ccf}.secondary-btn{color:#365ab5;background:#edf5ff;border:1px solid #b9d0ec}.status{color:#446ccf;margin-top:14px}.error{color:#b42318;margin-top:14px}.reader-toolbar{z-index:10;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;padding:8px;display:flex;position:sticky;top:70px}.reader-toolbar button,.speech-settings button{color:#183b66;background:#edf5ff;border:0;border-radius:10px;padding:9px 12px}.segmented{background:#eef3f8;border-radius:10px;padding:3px;display:flex}.segmented button{background:0 0}.segmented button.on{color:#fff;background:#446ccf}.reader-wrap{background:#eaf0f6;border-radius:16px;width:100%;position:relative;overflow:hidden}.reader-image{width:100%;height:auto;display:block}.hotspot{background:#87ceeb0f;border:1px solid #1e90ff2e;border-radius:5px;min-width:18px;min-height:18px;padding:0;position:absolute}.hotspot:hover,.hotspot.active{background:#1e90ff40;border:2px solid #1e90ff}.speech-settings{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin-top:12px;padding:10px;display:flex}.speech-settings select{border:1px solid #d3dfeb;border-radius:10px;padding:8px}.speech-settings label{align-items:center;gap:8px;display:flex}.recent{margin-top:18px;padding:16px}.recent h2{margin:0 0 12px;font-size:18px}.recent-grid{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.recent-item{min-width:0}.thumb{aspect-ratio:3/4;background:#edf2f6;border:0;border-radius:12px;width:100%;padding:0;overflow:hidden}.thumb img{object-fit:cover;width:100%;height:100%}.recent-item>div{color:#7d8fa2;justify-content:space-between;align-items:center;gap:6px;margin-top:5px;font-size:11px;display:flex}.danger{color:#b42318;background:0 0;border:0;font-size:12px}footer{text-align:center;color:#8a9bad;padding:26px 12px 38px;font-size:12px}@media (width<=640px){main{padding:10px}.hero{padding:28px 16px}.hero h1{font-size:22px}.reader-toolbar{top:63px}.recent-grid{grid-template-columns:repeat(2,1fr)}.topbar small,.privacy{font-size:11px}}.admin-page{width:min(1180px,100%);margin:auto;padding:22px 16px 48px}.admin-head{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.admin-head h1{margin:0;font-size:28px}.admin-head p{color:#71849a;margin:5px 0 0}.admin-head a{color:#365ab5;text-decoration:none}.admin-login{width:min(430px,100%);margin:70px auto 0;padding:24px}.admin-login h2{margin-top:0}.admin-login label{color:#52677d;margin:12px 0;display:block}.admin-login input{background:#fff;border:1px solid #cfdeec;border-radius:10px;width:100%;margin-top:6px;padding:11px 12px}.primary-action{color:#fff;background:#446ccf;border:0;border-radius:11px;width:100%;padding:12px;font-weight:700}.range-tabs{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.range-tabs button{color:#365ab5;background:#fff;border:1px solid #d5e2ef;border-radius:10px;padding:8px 12px}.range-tabs button.on{color:#fff;background:#446ccf;border-color:#446ccf}.metric-grid{grid-template-columns:repeat(6,1fr);gap:12px;display:grid}.metric{min-height:116px;padding:15px}.metric span,.metric small{color:#71849a;display:block}.metric strong{color:#183b66;margin:9px 0 4px;font-size:28px;display:block}.trend-card,.admin-table-wrap{margin-top:14px;padding:16px}.section-title{justify-content:space-between;align-items:center;gap:14px;display:flex}.section-title h2{margin:0;font-size:18px}.section-title p{color:#71849a;margin:4px 0 0;font-size:13px}.bar-chart{border-bottom:1px solid #e4edf6;align-items:flex-end;gap:3px;height:220px;margin-top:10px;padding:22px 4px 26px;display:flex;overflow:hidden}.bar-col{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;min-width:3px;height:100%;display:flex;position:relative}.bar{background:#446ccf;border-radius:5px 5px 2px 2px;width:min(18px,80%);min-height:2px}.bar-col span{color:#8193a6;white-space:nowrap;font-size:10px;position:absolute;bottom:-22px}.admin-table-wrap{overflow:auto}.admin-table{border-collapse:collapse;width:100%;min-width:760px;margin-top:12px}.admin-table th,.admin-table td{text-align:right;border-bottom:1px solid #edf2f7;padding:9px 10px;font-size:13px}.admin-table th:first-child,.admin-table td:first-child{text-align:left}.admin-table th{color:#64788d;background:#f8fbfe;font-weight:600}.privacy-note{color:#72859a;text-align:center;margin-top:14px;font-size:12px}@media (width<=1000px){.metric-grid{grid-template-columns:repeat(3,1fr)}}@media (width<=640px){.admin-page{padding:14px 10px 36px}.admin-head{align-items:flex-start}.admin-head h1{font-size:23px}.metric-grid{grid-template-columns:repeat(2,1fr)}.metric strong{font-size:24px}.bar-chart{height:180px}}.brand-head{align-items:center;gap:10px;min-width:0;display:flex}.top-logo{object-fit:contain;background:#fff;border-radius:10px;width:38px;height:38px}.logo{overflow:hidden}.logo img{object-fit:contain;background:#fff;width:100%;height:100%}.site-banner{color:#fff;min-height:110px;margin-bottom:16px;text-decoration:none;display:block;position:relative;overflow:hidden}.site-banner>img{object-fit:cover;width:100%;max-height:280px;display:block}.banner-copy{background:linear-gradient(#0000,#0d2443c2);flex-direction:column;gap:4px;padding:28px 20px 16px;display:flex;position:absolute;bottom:0;left:0;right:0}.banner-copy span{opacity:.94;font-size:13px}.site-settings{margin-top:14px;padding:18px}.settings-save{color:#fff;background:#446ccf;border:0;border-radius:10px;padding:9px 14px;font-weight:700}.settings-grid{grid-template-columns:1fr 1fr;gap:14px;margin-top:16px;display:grid}.settings-grid label,.asset-field{color:#52677d;flex-direction:column;gap:7px;font-size:13px;display:flex}.settings-grid .wide{grid-column:1/-1}.settings-grid input[type=text],.settings-grid input:not([type]),.settings-grid input[type=file],.settings-grid textarea,.settings-grid input[type=url]{background:#fff;border:1px solid #cfdeec;border-radius:10px;width:100%;padding:10px}.settings-grid input[type=checkbox]{width:auto}.checkline{align-items:center;flex-direction:row!important}.asset-field{background:#fbfdff;border:1px solid #e1eaf3;border-radius:12px;padding:12px}.asset-preview{color:#8193a6;background:#eef4fa;border:1px dashed #cbdceb;border-radius:10px;place-items:center;display:grid;overflow:hidden}.asset-preview img{object-fit:contain;width:100%;height:100%}.logo-preview{width:88px;height:88px}.banner-preview{aspect-ratio:4;width:100%}.asset-field button{color:#b42318;background:#fff;border:1px solid #d8e3ef;border-radius:9px;align-self:flex-start;padding:7px 10px}.save-ok{color:#16803b;margin:12px 0 0;font-size:13px}@media (width<=640px){.settings-grid{grid-template-columns:1fr}.settings-grid .wide{grid-column:auto}.site-banner{border-radius:14px}.banner-copy strong{font-size:17px}}.app-shell>.site-banner{aspect-ratio:3;width:min(1200px,100%);min-height:0;box-shadow:none;background:#edf5ff;border:0;border-radius:0;margin:0 auto}.app-shell>.site-banner>img{object-fit:contain;width:100%;height:100%;max-height:none}.banner-copy strong{font-size:clamp(14px,2.4vw,28px)}.banner-copy span{font-size:clamp(10px,1.3vw,16px)}.admin-nav{background:#183b66;border-radius:12px;flex-wrap:wrap;gap:8px;margin-bottom:18px;padding:10px;display:flex}.admin-nav button{color:#dceaff;cursor:pointer;background:0 0;border:0;border-radius:8px;padding:10px 16px}.admin-nav button.on{color:#365ab5;background:#fff}.admin-nav button:last-child{margin-left:auto}.settings-grid small{color:#71849a}button:disabled{opacity:.6;cursor:wait}@media (width<=640px){.banner-copy{padding:16px 12px 8px}.admin-nav button{padding:9px 10px}}.topbar{-webkit-backdrop-filter:none;backdrop-filter:none;background:#fff;grid-template-columns:minmax(280px,1fr) minmax(0,1200px) minmax(84px,1fr);align-items:center;gap:24px;min-height:124px;padding:12px 24px;display:grid}.brand-head{gap:12px}.top-logo{border-radius:12px;flex:0 0 56px;width:56px;height:56px}.brand-head>div{min-width:0}.topbar strong{overflow-wrap:anywhere;font-size:22px;line-height:1.25}.topbar small{margin-top:5px;font-size:13px;line-height:1.5}.topbar>.privacy{white-space:nowrap;justify-self:end}.banner-slot{width:100%;min-width:0}.header-banner{aspect-ratio:12;width:100%;min-height:0;max-height:100px;box-shadow:none;background:#edf5ff;border:0;border-radius:10px;margin:0;display:block;position:relative;overflow:hidden}.header-banner>img{object-fit:contain;width:100%;height:100%;max-height:none;display:block}.header-banner .banner-copy{background:linear-gradient(90deg,#0d2443b3,#0000);justify-content:center;gap:3px;padding:8px 18px;inset:0}.header-banner .banner-copy strong{font-size:clamp(12px,1.35vw,20px);line-height:1.3}.header-banner .banner-copy span{font-size:clamp(10px,1vw,13px);line-height:1.4}.banner-preview{aspect-ratio:12}@media (width<=1100px){.topbar{grid-template-columns:240px minmax(0,1fr) 74px;gap:14px;padding:12px 16px}.topbar strong{font-size:19px}.topbar small{font-size:12px}.top-logo{flex-basis:48px;width:48px;height:48px}}@media (width<=800px){.topbar{grid-template-columns:minmax(0,1fr) auto;gap:10px 14px;min-height:0;padding:12px 14px;position:relative}.brand-head{grid-area:1/1}.topbar>.privacy{grid-area:1/2}.banner-slot{grid-area:2/1/auto/-1}.banner-slot:empty{display:none}.header-banner{border-radius:7px}.header-banner .banner-copy{padding:3px 10px}.header-banner .banner-copy strong{font-size:12px}.header-banner .banner-copy span{font-size:10px}.reader-toolbar{top:8px}.topbar strong{font-size:18px}.topbar small{font-size:11px}.top-logo{flex-basis:44px;width:44px;height:44px}}.speech-settings{justify-content:flex-start;margin:0 0 10px}.speech-settings select{min-width:0;max-width:100%}.speech-feedback{color:#52677d;flex-wrap:wrap;gap:8px 16px;margin-bottom:12px;padding:10px 14px;font-size:13px;display:flex}.speech-feedback .voice-count{color:#71849a}.speech-feedback .error{width:100%;margin:0;line-height:1.6}.hotspot{cursor:pointer;touch-action:manipulation}.hotspot:focus-visible{outline-offset:2px;outline:3px solid #446ccf}.server-audio{width:100%;height:42px;margin:0 0 12px;display:block}:root{--study-content-width:980px;--study-content-gutter:16px}.app-shell>main{width:min(var(--study-content-width),100%);padding-left:var(--study-content-gutter);padding-right:var(--study-content-gutter)}.topbar{grid-template-columns:minmax(0,1fr) minmax(0,calc(var(--study-content-width) - 2 * var(--study-content-gutter))) minmax(0,1fr);gap:24px;padding:12px 24px}.topbar .banner-slot{justify-self:center;width:100%}.topbar .header-banner{aspect-ratio:12;width:100%;height:auto;max-height:none}@media (width<=1600px){.topbar{padding:12px var(--study-content-gutter);grid-template-columns:minmax(0,1fr) auto;gap:10px 16px;min-height:0;position:relative}.topbar .brand-head{grid-area:1/1}.topbar>.privacy{grid-area:1/2}.topbar .banner-slot{width:min(calc(var(--study-content-width) - 2 * var(--study-content-gutter)),100%);grid-area:2/1/auto/-1}.reader-toolbar{top:8px}}@media (width<=640px){:root{--study-content-gutter:10px}.topbar{padding:10px var(--study-content-gutter)}.topbar .header-banner{border-radius:8px}}.settings-grid select{color:#183b66;background:#fff;border:1px solid #cfdeec;border-radius:10px;padding:10px}.speech-actions{margin-top:16px}.topbar{position:relative}.reader-toolbar{top:8px}.header-banner .banner-visual{height:100%}.banner-editor button{font:inherit}.hotspot{min-width:0;min-height:0}.hotspot.low{background:#ffb84d12;border-color:#dc8414b3}.hotspot.active{background:#1e90ff40;border-color:#1e90ff}.reader-actions{flex-wrap:wrap;gap:6px;display:flex}.reader-actions .on{color:#fff;background:#446ccf}.ocr-quality{flex-wrap:wrap;gap:8px 16px;margin-bottom:12px;padding:12px 14px;font-size:13px;display:flex}.ocr-quality small{color:#71849a;width:100%}.correction-panel{margin-bottom:12px;padding:12px;font-size:13px}.correction-panel p{margin-top:0;line-height:1.6}.correction-panel>div{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.correction-panel input{border:1px solid #b9d0ec;border-radius:8px;max-width:100%;padding:8px}.correction-panel button{color:#365ab5;background:#edf5ff;border:0;border-radius:8px;padding:8px}@media (width<=640px){.reader-toolbar{flex-wrap:wrap}.reader-actions{justify-content:flex-end;width:100%}.ocr-quality{gap:6px 12px}}.topbar>.contact-actions{justify-content:flex-end;justify-self:end;min-width:0}.topbar .brand-head{overflow-wrap:anywhere;min-width:0}@media (width<=1600px){.topbar>.contact-actions{grid-area:1/2}}@media (width<=480px){.topbar>.contact-actions{grid-area:2/1/auto/-1;justify-self:start}.topbar .banner-slot{grid-row:3}}