:root{font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;color:#182e49;background:#f4f6f9;font-synthesis:none}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0}button,input,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #75adf2;outline-offset:3px}a{color:#236cc3;text-decoration:none}a:hover{text-decoration:underline}.top{height:94px;padding:0 5vw;display:flex;gap:28px;align-items:center;border-bottom:1px solid #e1e6ee;background:white}.brand{display:flex;gap:11px;align-items:center;color:#152e4f;font-size:21px;font-weight:700}.brand small{display:block;font-size:11px;color:#698095;font-weight:500;letter-spacing:2px;margin-top:2px}.mark{display:grid;place-items:center;width:44px;height:48px;background:#183556;color:white;border-radius:12px;font-size:38px;font-weight:400}.demo{margin-left:auto;font-size:14px;white-space:nowrap}#identity{display:flex;align-items:center;gap:14px;margin-left:auto;font-size:14px}#identity:not([hidden])+.demo{margin-left:0}main{max-width:1180px;margin:auto;padding:48px 28px 30px;min-height:calc(100vh - 156px)}footer{text-align:center;color:#72839a;font-size:12px;padding:22px}.login-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:70px;align-items:center;padding:60px 15px}.eyebrow{text-transform:uppercase;font-size:12px;letter-spacing:2px;color:#677b92;margin:0 0 18px}h1{font-size:38px;line-height:1.35;letter-spacing:-1px;margin:0 0 20px;font-weight:650}h2{font-size:21px;margin:0 0 14px;font-weight:650}.lead{font-size:17px;line-height:1.95;color:#566d86}.workflow{display:flex;flex-wrap:wrap;gap:18px;margin:34px 0;color:#2469b1;font-size:13px}.card{background:white;border:1px solid #e1e7ef;border-radius:18px;box-shadow:0 8px 24px #24446405}.login-card{padding:32px}.muted{color:#75859a;line-height:1.7}.small{font-size:12px}.login-card .small{margin-top:22px}.primary{border:0;border-radius:9px;background:#1a3e69;color:white;min-height:44px;padding:11px 20px;font-weight:600}.primary:hover{background:#275887}.secondary{border:1px solid #d1dce9;background:#f3f7fc;color:#234b7c;border-radius:9px;padding:10px 16px;min-height:42px}.quiet{background:none;border:0;color:#57718f;padding:8px 0;font-size:13px}.login-card .primary,form> .primary{width:100%}label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:600;margin:20px 0}input,select{width:100%;border:1px solid #d6dfe9;border-radius:8px;min-height:43px;padding:10px 12px;background:#fafbfd;color:#213952;font-weight:400;font-size:14px}input:focus,select:focus{outline:2px solid #b5d0f3;border-color:#5192e0}label small{font-weight:400;color:#7b8ca1}.error{color:#ae3d35;font-size:13px;line-height:1.7;min-height:0}.error:empty{display:none}.welcome{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:10px 0 28px}.welcome .eyebrow{margin-bottom:12px}.welcome h1{font-size:29px;margin:0}.tabs{display:flex;gap:30px;border-bottom:1px solid #dce3eb}.tabs button{border:0;border-bottom:3px solid transparent;background:none;padding:15px 0;color:#718198;font-weight:600}.tabs button[aria-pressed=true]{color:#1d568e;border-color:#2f79ba}.section-line{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:25px 0}.section-line p{font-size:13px;margin:0}.section-line h2{font-size:18px;margin-bottom:7px}.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.model-card{padding:23px}.model-icon{height:100px;display:grid;place-items:center;background:linear-gradient(135deg,#f0f5fb,#e8eef6);border-radius:10px;color:#436993;font-size:54px;margin-bottom:18px}.model-card h3{font-size:17px;overflow-wrap:anywhere;margin:0 0 10px}.model-meta{color:#8795a8;font-size:12px}.badge{display:inline-block;font-size:11px;background:#eaf6ee;color:#32734c;padding:4px 8px;border-radius:5px}.badge.off{background:#f0f1f3;color:#7a8493}.card-actions{display:flex;flex-wrap:wrap;gap:15px;margin-top:20px;align-items:center}.card-actions button{border:0;background:none;padding:4px 0;font-size:13px;color:#2e70b5}.card-actions .danger{color:#9a5551}.empty{padding:45px;text-align:center}.empty p{color:#718198;font-size:14px}.empty-icon{font-size:52px;color:#849bb6}.empty h2{font-size:20px}.empty a{display:block;margin-top:20px;font-size:13px}.student-list{display:grid;gap:12px}.student-row{display:flex;align-items:center;gap:20px;background:white;border:1px solid #e0e6ee;border-radius:12px;padding:20px 24px}.avatar{width:42px;height:42px;background:#eaf1f9;color:#325c8a;border-radius:50%;display:grid;place-items:center;font-weight:650}.student-detail{flex:1}.student-detail h3{font-size:16px;margin:0 0 5px}.student-detail p{margin:0;font-size:12px;color:#7b8ba0}.student-buttons{display:flex;gap:18px}.student-buttons button{border:0;background:none;font-size:13px;color:#366897}.status{text-align:center;color:#285d8c;font-size:14px}.status:empty{display:none}dialog{border:1px solid #d7e0eb;border-radius:18px;padding:28px;width:min(450px,calc(100% - 30px));max-height:92vh;overflow:auto;color:#1b3452;box-shadow:0 30px 100px #193c5d30}dialog::backdrop{background:#1a2d4c70;backdrop-filter:blur(5px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.dialog-head h2{margin:0;font-size:19px}.dialog-head button{border:0;background:none;color:#71859c;font-size:26px;min-width:36px;min-height:36px}dialog>p{font-size:14px;line-height:1.7}#upload-dialog{width:min(1050px,calc(100% - 32px))}.upload-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:30px}.file-zone{background:#f3f7fc;border:1px dashed #b3c6de;padding:18px;border-radius:10px}.file-zone input{border:0;padding:5px 0;background:none}.file-zone span{font-size:11px;font-weight:400;color:#7d8a9e}.export-help{font-size:13px;background:#f7f9fb;border-radius:10px;padding:15px;line-height:1.7}.export-help p{color:#738397}.export-help .small{margin-bottom:0}.preview-wrap{position:relative;min-height:550px;border-radius:12px;overflow:hidden;background:#edf2f8;margin-top:20px}#preview-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#8398b0}#preview-empty span{font-size:70px}#preview-empty p{font-size:16px}#preview-empty small{font-size:12px}iframe{width:100%;height:100%;min-height:550px;border:0;position:absolute;inset:0}.check{flex-direction:row;align-items:flex-start;font-size:12px;line-height:1.7;font-weight:400}.check input{width:18px;min-height:18px;flex:none;margin:2px 0}progress{width:100%;height:9px;margin-top:15px}#model-check{font-size:13px;white-space:pre-line}pre{font-family:inherit;font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere;background:#f0f5fa;border-radius:10px;padding:18px;line-height:2}#share-qr{display:block;margin:10px auto;max-width:100%}#share-dialog .primary{width:100%}#native-share{width:100%;margin-top:10px}
@media(max-width:800px){.login-layout{grid-template-columns:1fr;gap:24px;padding:0}.intro h1{font-size:30px}.intro .workflow{margin:22px 0}.top{height:auto;min-height:78px;padding:15px 20px;flex-wrap:wrap;gap:15px}.brand{font-size:18px}.mark{width:35px;height:39px;font-size:30px}#identity{order:3;width:100%;margin:0;border-top:1px solid #e4eaf0;padding-top:12px}#identity:not([hidden])+.demo{margin-left:auto}main{padding:28px 18px}.model-grid{grid-template-columns:repeat(2,1fr)}.upload-grid{grid-template-columns:1fr}.preview-wrap{min-height:560px}.student-row{flex-wrap:wrap;padding:18px}.student-buttons{width:100%;justify-content:flex-end}.section-line{align-items:flex-start}.section-line .primary{white-space:nowrap;font-size:12px}.welcome h1{font-size:24px}.welcome>.primary{font-size:13px;white-space:nowrap}}
@media(max-width:460px){.model-grid{grid-template-columns:1fr}.intro .lead{font-size:15px}.login-card{padding:24px}.welcome{align-items:flex-start}.welcome h1{font-size:21px}.welcome .eyebrow{font-size:10px}.section-line{flex-wrap:wrap}dialog{padding:20px}.workflow{gap:10px;font-size:11px}}

/* Brand portrait and phone contacts. */
.brand{white-space:nowrap}.mark{width:56px;height:56px;overflow:hidden;flex:none;background:#e6ecf3}.mark img{display:block;width:100%;height:100%;object-fit:cover;transform:scale(2.1);transform-origin:50% 36%}
.studio-contact{display:flex;justify-content:center;align-items:center;gap:8px 20px;flex-wrap:wrap;line-height:1.8}.contact-phones{white-space:nowrap}.studio-contact a{color:#536f92;display:inline-block;padding:6px 0}
@media(max-width:800px){.mark{width:46px;height:46px}.brand{font-size:18px}.studio-contact{flex-direction:column;gap:0;padding:16px 12px}.top{column-gap:12px}.demo{font-size:12px}}