:root{--ink:#24201d;--muted:#817a72;--paper:#f7f4ee;--card:#fff;--orange:#ef6735;--orange-dark:#d94d1f;--cream:#fff2df;--green:#25876d;--red:#c7463c;--line:#e9e4dc;--shadow:0 18px 45px rgba(63,48,35,.10);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{background:var(--paper)}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.no-scroll{overflow:hidden}.mobile-hero{position:relative;overflow:hidden;min-height:280px;padding:52px 24px 42px;background:linear-gradient(145deg,#e95527,#f58843);color:#fff;border-radius:0 0 34px 34px}.hero-content{position:relative;z-index:2;max-width:620px;margin:auto}.eyebrow{font-size:11px;letter-spacing:.22em;font-weight:800;opacity:.78}.mobile-hero h1{font-size:34px;line-height:1.22;margin:15px 0 12px;letter-spacing:-.04em}.mobile-hero p{margin:0;opacity:.83;font-size:15px}.hero-orb{position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.22)}.hero-orb.one{width:250px;height:250px;right:-75px;top:-82px}.hero-orb.two{width:105px;height:105px;right:35px;bottom:-40px;background:rgba(255,255,255,.08)}.mobile-main{max-width:680px;margin:-18px auto 0;padding:0 16px 30px;position:relative;z-index:3}.section-title{display:flex;align-items:center;justify-content:space-between;margin:26px 3px 15px}.section-title>div{display:flex;gap:9px;align-items:baseline}.section-title span{font-size:19px;font-weight:800}.section-title small{color:var(--muted)}.section-title .live-dot{font-size:11px;color:var(--green);font-weight:700}.live-dot:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#36b38e;margin-right:6px;box-shadow:0 0 0 4px rgba(54,179,142,.12)}.task-grid{display:grid;gap:16px}.task-card{display:grid;grid-template-columns:126px 1fr;min-height:148px;background:var(--card);border-radius:20px;padding:10px;text-decoration:none;color:inherit;box-shadow:0 8px 28px rgba(70,55,42,.08);border:1px solid rgba(255,255,255,.8)}.task-card.closed{opacity:.78}.task-cover{position:relative;border-radius:14px;overflow:hidden;background:#eee7dc}.task-cover img{width:100%;height:100%;object-fit:cover;display:block}.cover-placeholder{height:100%;display:grid;place-items:center;font-size:24px;font-weight:900;color:#c7aa8d}.status-pill,.count-pill{position:absolute;font-size:10px;font-weight:800;border-radius:999px;padding:5px 8px}.status-pill{left:7px;top:7px}.status-pill.open{background:#e5f7ef;color:#187057}.status-pill.ended{background:#eeeae6;color:#726b64}.count-pill{right:7px;bottom:7px;background:rgba(27,24,22,.72);color:#fff}.task-body{padding:8px 6px 6px 14px;display:flex;min-width:0;flex-direction:column}.task-body h2{font-size:18px;margin:3px 0 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.deadline{display:flex;align-items:flex-start;gap:6px;color:var(--muted);font-size:12px;line-height:1.5}.clock{font-size:16px;color:var(--orange)}.task-action{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);font-weight:750;font-size:13px;color:var(--orange);display:flex;justify-content:space-between}.task-action span{font-size:18px}.mobile-footer{text-align:center;color:#9a938b;font-size:11px;padding:4px 20px 30px}.empty-state{text-align:center;background:#fff;border-radius:22px;padding:45px 20px;box-shadow:var(--shadow)}.empty-icon{display:grid;place-items:center;margin:auto;width:52px;height:52px;border-radius:50%;background:#e8f6ef;color:var(--green);font-size:24px}.empty-state h2{font-size:18px;margin:16px 0 7px}.empty-state p{margin:0;color:var(--muted);font-size:13px}.notice{padding:13px 15px;border-radius:12px;background:#fff3d7;color:#7c5b10;margin:14px 0;font-size:14px;line-height:1.5;border:1px solid #f2dda9}.notice.error{background:#fff0ed;color:#9c3026;border-color:#f5c9c2}.notice.success{background:#eaf8f1;color:#17684f;border-color:#bee8d8}.topbar{height:58px;position:sticky;top:0;z-index:20;background:rgba(247,244,238,.9);backdrop-filter:blur(16px);display:grid;grid-template-columns:40px 1fr 40px;align-items:center;padding:0 14px;border-bottom:1px solid rgba(220,213,203,.65)}.topbar a{text-decoration:none;color:var(--ink);font-size:34px;font-weight:300}.topbar strong{text-align:center;font-size:16px}.submit-main{max-width:760px;margin:auto;padding:16px 14px 50px}.detail-head{padding:20px 6px 12px}.eyebrow.dark{color:var(--orange)}.detail-head h1{margin:9px 0 13px;font-size:28px;letter-spacing:-.035em}.detail-meta{display:flex;align-items:center;gap:11px;color:var(--muted);font-size:13px}.detail-meta .status-pill{position:static}.panel{background:#fff;border-radius:23px;padding:18px;margin-top:15px;box-shadow:0 8px 28px rgba(64,51,42,.07)}.panel-heading{display:flex;gap:12px;align-items:center;margin-bottom:16px}.step-no{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--cream);color:var(--orange);font-size:12px;font-weight:900}.panel-heading h2{font-size:17px;margin:0 0 3px}.panel-heading p{font-size:12px;color:var(--muted);margin:0}.assignment-gallery{display:grid;grid-auto-flow:column;grid-auto-columns:82%;overflow-x:auto;gap:10px;scroll-snap-type:x mandatory;padding-bottom:3px;scrollbar-width:none}.assignment-gallery::-webkit-scrollbar{display:none}.assignment-image{position:relative;padding:0;border:0;border-radius:15px;overflow:hidden;background:#eee;aspect-ratio:4/3;scroll-snap-align:start}.assignment-image img{width:100%;height:100%;object-fit:cover}.assignment-image span{position:absolute;right:9px;bottom:8px;padding:4px 8px;border-radius:99px;background:rgba(0,0,0,.62);color:#fff;font-size:11px}.field-row{display:grid;gap:13px}.field{display:grid;gap:7px}.field span,.field-label span{font-size:13px;font-weight:750}.field b,.field-label b{color:var(--orange)}.field input{width:100%;height:49px;border:1px solid var(--line);border-radius:13px;padding:0 14px;background:#fbfaf8;outline:none;font-size:15px}.field input:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(239,103,53,.12);background:#fff}.camera-field{margin-top:18px}.field-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.field-label small{color:var(--muted)}.field-label small strong{color:var(--orange)}.camera-trigger{width:100%;min-height:132px;border:1.5px dashed #e1b99e;background:#fffaf5;border-radius:16px;color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px}.camera-trigger strong{font-size:14px}.camera-trigger small{font-size:11px;color:var(--muted)}.camera-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:2px solid var(--orange);color:var(--orange);font-size:13px}.privacy-tip{font-size:11px;line-height:1.5;color:#928a82;margin:9px 2px 0}.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:10px}.photo-grid:empty{display:none}.photo-item{position:relative;aspect-ratio:1;border-radius:12px;overflow:hidden;background:#eee}.photo-item img{width:100%;height:100%;object-fit:cover}.photo-item span{position:absolute;left:5px;bottom:5px;width:20px;height:20px;display:grid;place-items:center;background:rgba(0,0,0,.62);color:#fff;border-radius:50%;font-size:10px}.photo-item button{position:absolute;right:5px;top:5px;width:25px;height:25px;border:0;border-radius:50%;background:rgba(0,0,0,.65);color:#fff;font-size:19px;line-height:20px}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:13px;padding:13px 18px;text-decoration:none;font-weight:800;cursor:pointer}.btn.primary{background:linear-gradient(135deg,var(--orange),#f08540);color:#fff;box-shadow:0 10px 22px rgba(239,103,53,.24)}.btn.block{display:flex;width:100%}.submit-btn{width:100%;margin-top:20px;height:53px;justify-content:space-between;padding:0 20px}.submit-btn:disabled{opacity:.6}.submit-btn i{font-style:normal;font-size:21px}.disabled-panel{opacity:.8}.camera-sheet{position:fixed;inset:0;z-index:100;background:#080808;color:#fff}.camera-toolbar{height:64px;display:grid;grid-template-columns:70px 1fr 70px;align-items:center;padding:0 10px;background:#080808}.camera-toolbar strong{text-align:center}.camera-toolbar button{background:none;border:0;color:#fff}.camera-stage{position:absolute;left:0;right:0;top:64px;bottom:126px;overflow:hidden;background:#111}.camera-stage video{width:100%;height:100%;object-fit:cover}.camera-guide{position:absolute;inset:7%;border:1px solid rgba(255,255,255,.55);border-radius:10px}.camera-guide:before,.camera-guide:after{content:"";position:absolute;width:35px;height:35px;border-color:#fff}.camera-guide:before{left:-2px;top:-2px;border-left:3px solid;border-top:3px solid;border-radius:8px 0 0}.camera-guide:after{right:-2px;bottom:-2px;border-right:3px solid;border-bottom:3px solid;border-radius:0 0 8px}.camera-guide span{position:absolute;left:50%;top:12px;transform:translateX(-50%);white-space:nowrap;background:rgba(0,0,0,.45);padding:6px 10px;border-radius:99px;font-size:11px}.camera-controls{height:126px;position:absolute;bottom:0;left:0;right:0;display:grid;grid-template-columns:1fr 82px 1fr;align-items:center;text-align:center;padding:0 16px}.camera-controls>span{font-size:10px;color:#aaa}.camera-controls button{width:70px;height:70px;border-radius:50%;border:4px solid #fff;background:transparent;padding:5px}.camera-controls button i{display:block;width:100%;height:100%;background:#fff;border-radius:50%}.image-viewer{position:fixed;inset:0;z-index:110;background:rgba(0,0,0,.92);padding:50px 10px 20px}.image-viewer img{width:100%;height:100%;object-fit:contain}.image-viewer button{position:absolute;right:14px;top:12px;color:#fff;background:none;border:0;font-size:36px}.loading-mask{position:fixed;inset:0;z-index:120;background:rgba(250,248,244,.96);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}.loading-mask[hidden],.camera-sheet[hidden],.image-viewer[hidden]{display:none}.loading-mask span{font-size:12px;color:var(--muted)}.spinner{width:42px;height:42px;border:4px solid #f4d7c8;border-top-color:var(--orange);border-radius:50%;animation:spin .8s linear infinite}.camera-toast{position:fixed;z-index:200;left:50%;bottom:32px;max-width:82%;transform:translate(-50%,20px);padding:11px 15px;background:rgba(30,27,25,.92);color:#fff;border-radius:10px;opacity:0;pointer-events:none;transition:.2s;font-size:13px;text-align:center}.camera-toast.show{opacity:1;transform:translate(-50%,0)}@keyframes spin{to{transform:rotate(360deg)}}.install-page{display:grid;place-items:center;min-height:100vh;padding:20px;background:linear-gradient(145deg,#f9eee5,#f7f4ee 45%,#efe7dc)}.install-card{width:min(460px,100%);background:#fff;padding:30px;border-radius:24px;box-shadow:var(--shadow)}.brand-mark{width:50px;height:50px;border-radius:16px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:25px;font-weight:900}.install-card h1{font-size:25px;margin:18px 0 5px}.muted{color:var(--muted)}.stack-form{display:grid;gap:13px;margin-top:22px}.stack-form label{display:grid;gap:6px;font-size:13px;font-weight:700}.stack-form input{height:45px;border:1px solid var(--line);border-radius:10px;padding:0 12px}
@media(min-width:600px){.mobile-hero{min-height:315px;padding-top:70px}.mobile-hero h1{font-size:42px}.task-grid{grid-template-columns:1fr 1fr}.task-card{grid-template-columns:112px 1fr}.field-row{grid-template-columns:1fr 1fr}.assignment-gallery{grid-auto-columns:56%}.panel{padding:24px}.submit-main{padding-top:26px}}
.photo-item>span{top:5px;bottom:auto}.photo-item .preview-watermark{position:absolute;right:4px;bottom:4px;white-space:pre-line;text-align:left;background:rgba(0,0,0,.55);color:#fff;border-radius:3px;padding:3px 4px;font-size:6px;line-height:1.25}
.photo-item img{cursor:zoom-in}.photo-item img:focus-visible{outline:3px solid #f5b800;outline-offset:-3px}.image-viewer .viewer-watermark{position:absolute;right:20px;bottom:30px;max-width:calc(100% - 40px);padding:8px 11px;border-radius:7px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;line-height:1.45;white-space:pre-line;text-align:right;letter-spacing:.02em;pointer-events:none}

/* TEMPORARY DEBUG POPUP: 上线前删除 OCR 比对详情弹窗时可整段删除。 */
.comparison-debug{position:fixed;inset:0;z-index:130;display:grid;place-items:center;padding:16px;background:rgba(25,21,18,.72);backdrop-filter:blur(5px)}
.comparison-debug[hidden]{display:none}
.comparison-debug-card{width:min(920px,100%);max-height:calc(100vh - 32px);overflow:auto;background:#fff;border-radius:22px;padding:20px;box-shadow:0 24px 70px rgba(0,0,0,.28)}
.comparison-debug-card>header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.comparison-debug-card>header small{display:block;color:var(--orange);font-size:11px;font-weight:800;letter-spacing:.12em}
.comparison-debug-card>header h2{margin:5px 0 0;font-size:21px}
.comparison-debug-card>header button{flex:0 0 auto;width:36px;height:36px;border:0;border-radius:50%;background:#f1ede7;color:var(--ink);font-size:25px;line-height:1}
.comparison-debug-score{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;margin:16px 0;padding:12px 14px;border-radius:12px;background:#fff2df;color:#76512f;font-size:13px}
.comparison-debug-score strong{color:var(--orange);font-size:17px}
.comparison-debug-texts{display:grid;gap:12px}
.comparison-debug-texts section{min-width:0;padding:13px;border:1px solid var(--line);border-radius:14px;background:#fbfaf8}
.comparison-debug-texts h3{margin:0 0 9px;font-size:14px}
.comparison-debug-texts pre{max-height:34vh;overflow:auto;margin:0;padding:11px;border-radius:9px;background:#282522;color:#f6f2eb;font:12px/1.65 ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.comparison-debug-close{width:100%;margin-top:16px}
@media(min-width:760px){.comparison-debug-card{padding:24px}.comparison-debug-texts{grid-template-columns:1fr 1fr}}