:root{--bg:#f7fbff;--panel:#fff;--panel-soft:#eef6ff;--text:#172033;--muted:#66748a;--line:#dde7f3;--brand:#1f6bff;--brand-strong:#1756d8;--brand-soft:#eaf2ff;--accent:#ff8a00;--ok:#0ba56b;--warn:#b7791f;--error:#d3424b;--shadow-sm:0 10px 24px #1f6bff14;--shadow-md:0 18px 44px #1720331a}*{box-sizing:border-box}body{background:linear-gradient(135deg,#fff4fad1 0%,#f4f8fff5 42%,#eefff8d1 100%),var(--bg);color:var(--text);margin:0;font-family:Microsoft YaHei,Segoe UI,Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-shell{flex-direction:column;min-height:100vh;display:flex}.topbar{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:40;background:#ffffffc7;border-bottom:1px solid #dde7f3c7;justify-content:space-between;align-items:center;height:68px;padding:0 clamp(18px,4vw,44px);display:flex;position:sticky;top:0}.brand{color:var(--text);align-items:center;gap:10px;font-size:18px;font-weight:800;display:inline-flex}.brand-mark{background:var(--brand);color:#fff;border-radius:8px;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex;box-shadow:0 10px 22px #1f6bff38}.brand-copy{gap:1px;line-height:1.1;display:grid}.brand-copy small{color:var(--muted);font-size:11px;font-weight:600}.nav{gap:10px;display:flex}.nav a,.button,.icon-button{border:1px solid var(--line);min-height:38px;color:var(--text);cursor:pointer;background:#ffffffdb;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:0 14px;transition:background-color .18s,border-color .18s,box-shadow .18s,transform .18s;display:inline-flex}.nav a:hover,.button:hover,.icon-button:hover{box-shadow:var(--shadow-sm);background:#fff;border-color:#1f6bff47;transform:translateY(-1px)}.button.primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 12px 24px #1f6bff38}.button.restore-button{color:var(--accent);background:#b43d481a;border-color:#b43d4861;font-weight:700}.button.restore-button:hover{background:#b43d4829}.button.danger{border-color:var(--error);color:var(--error)}.button:disabled{opacity:.55;cursor:not-allowed}.button.disabled{opacity:.55;cursor:not-allowed;pointer-events:none}.main{width:100%;max-width:1440px;margin:0 auto;padding:28px clamp(18px,4vw,42px)}.upload-layout{background:0 0;border:0;border-radius:0;width:min(100%,1240px);max-width:760px;margin:24px auto;padding:0}.upload-workbench{gap:18px;max-width:1240px;padding:0;display:grid}.upload-workbench-enhanced{gap:20px}.upload-hero,.upload-section,.upload-submit-bar{box-shadow:var(--shadow-sm);background:#ffffffeb;border:1px solid #dde7f3f2;border-radius:8px}.upload-hero{background:linear-gradient(90deg,#fffffffa,#ffffffc2),linear-gradient(135deg,#fff4fae6,#eaf2fff2 48%,#e6fff7b8);justify-content:space-between;align-items:stretch;gap:clamp(18px,4vw,42px);min-width:0;padding:clamp(28px,5vw,54px);display:flex;overflow:hidden}.upload-title{letter-spacing:0;gap:4px;margin-bottom:10px;font-size:52px;line-height:1.08;display:grid}.upload-title-accent{color:var(--brand)}.upload-subtitle{max-width:660px;color:var(--muted);margin:0;font-size:16px;line-height:1.9}.upload-history-primary{background:var(--brand);color:#fff;text-align:left;cursor:pointer;border:1px solid #1f6bff6b;border-radius:8px;align-items:center;gap:12px;width:fit-content;max-width:100%;min-height:56px;padding:10px 18px;font-family:inherit;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex;box-shadow:0 16px 32px #1f6bff3d}.upload-history-primary:hover{background:var(--brand-strong);transform:translateY(-1px);box-shadow:0 18px 34px #1f6bff4d}.upload-history-primary span{gap:2px;display:grid}.upload-history-primary strong{font-size:15px;line-height:1.2}.upload-history-primary small{color:#ffffffd1;font-size:12px;line-height:1.3}.upload-status{flex:320px;justify-content:flex-end;align-items:center;min-width:min(360px,36%);max-width:420px;display:flex}.upload-hero-main{align-content:center;gap:16px;min-width:0;display:grid}.upload-hero-badge{background:var(--brand-soft);width:fit-content;min-height:30px;color:var(--brand-strong);border-radius:999px;align-items:center;padding:0 12px;font-size:12px;font-weight:800;display:inline-flex}.upload-hero-points{flex-wrap:wrap;gap:10px;display:flex}.upload-hero-point{min-height:28px;color:var(--brand-strong);background:#ffffffc7;border:1px solid #1f6bff24;border-radius:999px;align-items:center;gap:6px;padding:0 10px;font-size:12px;display:inline-flex;box-shadow:0 8px 18px #1720330d}.upload-hero-panel{width:100%;box-shadow:var(--shadow-md);background:#ffffffe0;border:1px solid #dde7f3eb;border-radius:8px;gap:14px;padding:18px;display:grid}.upload-hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.upload-hero-metrics div{text-align:center;background:#f7fbff;border:1px solid #dde7f3b8;border-radius:8px;align-content:center;justify-items:center;gap:6px;min-width:0;min-height:86px;padding:10px;display:grid}.upload-hero-metrics strong{color:var(--brand);font-size:24px;line-height:1}.upload-hero-metrics span{color:var(--muted);font-size:12px;line-height:1.35}.upload-hero-header{flex-direction:column;gap:6px;display:flex}.upload-hero-brand{color:var(--brand-strong);letter-spacing:.04em;align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.upload-hero-trial-card{background:linear-gradient(135deg,#eef6ff 0%,#f0fdf4 100%);border-color:#22c55e40}.upload-hero-trial-info{flex-direction:column;gap:4px;display:flex}.upload-hero-trial-pages{color:var(--text);font-size:18px;font-weight:700}.upload-hero-trial-pages strong{color:var(--brand);font-size:28px}.upload-hero-trial-buffer{color:var(--muted);font-size:12px;font-weight:400}.upload-hero-trial-desc{color:var(--muted);font-size:13px}.upload-hero-trial-remaining{text-align:center;background:#fffc;border:1px solid #dde7f3b8;border-radius:6px;padding:8px 12px;font-size:13px;font-weight:600}.upload-hero-trial-remaining.ok em{color:var(--ok);font-style:normal;font-weight:800}.upload-hero-trial-remaining.exhausted em{color:var(--error);font-style:normal;font-weight:800}.upload-hero-trial-remaining.muted{color:var(--muted);font-weight:400}.upload-step-strip{flex-wrap:wrap;gap:10px;display:flex}.upload-step-chip{border:1px solid var(--line);min-height:36px;color:var(--muted);background:#ffffffc7;border-radius:999px;align-items:center;gap:8px;padding:0 12px;font-size:13px;font-weight:600;display:inline-flex}.upload-step-chip.active{color:var(--brand-strong);background:#1f6bff14;border-color:#1f6bff4d}.upload-step-index{background:#1f6bff24;border-radius:999px;justify-content:center;align-items:center;width:22px;height:22px;font-size:12px;font-weight:700;display:inline-flex}.upload-section{padding:22px 24px}.draft-history-section{gap:14px;display:grid}.draft-history-section .upload-section-title{align-items:center;gap:8px;display:inline-flex}.draft-list{gap:12px;display:grid}.draft-item{border:1px solid var(--line);background:#fff;border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px;display:grid}.draft-item.disabled{background:#f8fafcc7}.draft-item-main{gap:8px;min-width:0;display:grid}.draft-title-row{align-items:center;gap:10px;min-width:0;display:flex}.draft-title-row strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:15px;overflow:hidden}.draft-meta-row{color:var(--muted);flex-wrap:wrap;gap:8px 14px;font-size:12px;display:flex}.draft-meta-row span{align-items:center;gap:5px;display:inline-flex}.draft-inline-note{color:var(--warning);font-size:12px;line-height:1.5}.draft-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;max-width:560px;display:flex}.draft-actions .button{min-height:36px}.draft-message{margin:0}.hidden-input{display:none}.upload-section-emphasis{background:linear-gradient(#eaf2ffb8,#ffffffeb),#ffffffeb}.upload-section-header{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px;display:flex}.upload-section-title{font-size:16px;font-weight:800}.upload-section-note{color:var(--muted);font-size:13px}.upload-section-tip{min-height:28px;color:var(--muted);background:#65708014;border-radius:999px;align-items:center;padding:0 10px;font-size:12px;display:inline-flex}.template-source-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.template-source-grid-wide{grid-template-columns:repeat(5,minmax(0,1fr))}.template-source-card{text-align:left;cursor:pointer;background:#fff;border:1px solid #dde7f3f2;border-radius:8px;gap:10px;min-height:124px;padding:16px;transition:border-color .18s,box-shadow .18s,transform .18s,background-color .18s;display:grid;position:relative}.template-source-card:hover{border-color:#1f6bff42;transform:translateY(-1px);box-shadow:0 14px 30px #1f6bff1a}.template-source-card.active{border-color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px #1f6bff33,0 12px 28px #1f6bff1f}.template-source-card-badge{width:fit-content;min-height:24px;color:var(--brand-strong);background:#1f6bff17;border-radius:999px;align-items:center;padding:0 8px;font-size:12px;display:inline-flex}.template-source-card-title{font-size:15px;font-weight:700}.template-source-card-desc{color:var(--muted);font-size:13px;line-height:1.6}.template-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.template-card-shell{border:1px solid var(--line);background:#f9fbfc;border-radius:8px;gap:12px;padding:14px;display:grid}.template-card-shell.active{border-color:#1f6bff6b;box-shadow:inset 0 0 0 1px #1f6bff2e}.template-card-actions{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.template-card-shell.active .template-card-actions .button{color:#fff;background:#16a34a;border-color:#15803d;box-shadow:0 10px 20px #16a34a2e}.template-card-shell.active .template-card-actions .button:hover{background:#15803d;border-color:#166534;box-shadow:0 12px 24px #16653433}.template-card-label{font-size:15px;font-weight:700}.template-card-desc{color:var(--muted);margin-top:4px;font-size:13px;line-height:1.6}.template-selection-note{color:var(--brand-strong);font-size:14px}.upload-current-choice{background:linear-gradient(#eaf2ffb8,#ffffffeb),#fff}.upload-current-choice-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;display:flex}.upload-current-choice-body{color:var(--text);line-height:1.7}.json-entry-notice{background:linear-gradient(#eaf2ffc7,#ffffffeb),#fff;justify-content:space-between;align-items:flex-start;gap:18px;display:flex}.json-entry-copy,.json-entry-actions{min-width:0}.json-entry-title{margin-bottom:8px;font-size:15px;font-weight:700}.json-entry-desc{color:var(--muted);margin-bottom:10px;line-height:1.7}.json-entry-list{margin:0;padding-left:18px;line-height:1.8}.json-entry-actions{justify-items:start;gap:10px;width:240px;display:grid}.upload-custom-grid{grid-template-columns:minmax(280px,340px) minmax(0,1fr);align-items:start;gap:18px;display:grid}.upload-custom-form,.upload-custom-preview{min-width:0}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.file-dropzone{cursor:pointer;background:linear-gradient(#eaf2ffbd,#ffffffeb),#fff;border:1px dashed #1f6bff57;border-radius:8px;align-items:center;gap:14px;width:100%;min-height:136px;padding:18px;transition:border-color .18s,box-shadow .18s,transform .18s,background-color .18s;display:flex}.file-dropzone:hover{border-color:#1f6bff80;transform:translateY(-1px);box-shadow:0 14px 28px #1f6bff17}.file-dropzone.dragging{border-color:var(--brand);background:#1f6bff14;box-shadow:inset 0 0 0 1px #1f6bff3d}.file-dropzone.has-file{border-style:solid;border-color:#1f6bff57}.file-dropzone-icon{background:var(--brand-soft);width:44px;height:44px;color:var(--brand-strong);border-radius:999px;flex:none;justify-content:center;align-items:center;display:inline-flex}.file-dropzone-copy{flex:1;gap:6px;min-width:0;display:grid}.file-dropzone-title{font-size:15px;font-weight:700}.file-dropzone-subtitle{color:var(--muted);word-break:break-word;font-size:13px;line-height:1.6}.file-dropzone-note-list{color:var(--muted);gap:3px;margin-top:2px;font-size:12px;line-height:1.45;display:grid}.file-dropzone-note-list span:before{content:"•";color:var(--brand-strong);margin-right:6px}.file-dropzone-action{background:var(--brand-soft);min-height:32px;color:var(--brand-strong);border-radius:999px;align-items:center;padding:0 12px;font-size:12px;font-weight:700;display:inline-flex}.template-preview-card{gap:14px;display:grid}.template-preview-card.compact 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#dde7f3e6;border-radius:8px;gap:12px;margin-top:12px;padding:14px;display:grid}.preflight-card.good{background:#0ba56b0d;border-color:#0ba56b38}.preflight-card.warn,.preflight-card.busy{background:#b7791f0f;border-color:#b7791f3d}.preflight-card.bad{background:#d3424b0d;border-color:#d3424b42}.preflight-card-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.preflight-card-title{align-items:center;gap:8px;font-size:14px;font-weight:800;display:inline-flex}.preflight-card p{color:var(--muted);margin:6px 0 0;font-size:13px;line-height:1.65}.preflight-outline{background:#ffffffad;border:1px solid #dde7f3b8;border-radius:6px;flex-direction:column;gap:6px;padding:10px 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span{color:var(--muted);font-size:12px;line-height:1.6}.upload-structure-section{gap:16px;display:grid}.structure-health{min-height:30px;color:var(--muted);white-space:nowrap;background:#6570800f;border:1px solid #65708038;border-radius:999px;align-items:center;gap:7px;padding:0 10px;font-size:12px;font-weight:700;display:inline-flex}.structure-health.good{color:var(--ok);background:#0ba56b14;border-color:#0ba56b4d}.structure-health.warning{color:var(--warn);background:#b7791f14;border-color:#b7791f52}.structure-health.error{color:var(--error);background:#d3424b14;border-color:#d3424b4d}.structure-stats-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;display:grid}.structure-stats-grid div{text-align:center;background:#f9fbfc;border:1px solid #dde7f3e0;border-radius:8px;align-content:center;justify-items:center;gap:6px;min-width:0;min-height:78px;padding:10px;display:grid}.structure-stats-grid strong{color:var(--brand);font-size:22px;line-height:1}.structure-stats-grid span{color:var(--muted);font-size:12px}.structure-preview-grid{grid-template-columns:minmax(320px,.92fr) minmax(360px,1.08fr);align-items:stretch;gap:16px;display:grid}.structure-issue-panel,.structure-outline-panel{background:#fff;border:1px solid #dde7f3e6;border-radius:8px;flex-direction:column;min-width:0;height:100%;padding:16px;display:flex}.structure-panel-title{align-items:center;gap:8px;margin-bottom:12px;font-size:15px;font-weight:700;display:inline-flex}.structure-issue-list,.structure-outline-list{gap:10px;display:grid}.structure-issue{background:#f9fbfc;border:1px solid #6570802e;border-radius:8px;padding:12px}.structure-issue.error{background:#d3424b0f;border-color:#d3424b47}.structure-issue.warning{background:#b7791f12;border-color:#b7791f47}.structure-issue.info{background:#1f6bff0f;border-color:#1f6bff33}.structure-issue.good{background:#0ba56b0f;border-color:#0ba56b3d}.structure-issue-head{align-items:center;gap:8px;margin-bottom:8px;display:flex}.structure-issue-head 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