:root{--dpp:#e5484d;--dpp-dark:#b4232b;--dpp-soft:#fff0f0;--ink:#172033;--muted:#667085;--line:#e4e7ec;--panel:#fff;--wash:#f7f8fb}
.dpp-hero{background:linear-gradient(125deg,#fff 5%,#fff5f4 48%,#eef5ff);border-bottom:1px solid #f0e4e4}.dpp-hero .tool-hero-icon{background:linear-gradient(145deg,#ff6b6f,var(--dpp));box-shadow:0 12px 28px rgba(229,72,77,.25)}.dpp-page{max-width:1180px}.dpp-trust{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:0 0 18px}.dpp-trust span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 13px;color:#475467;font-size:.79rem;font-weight:600}.dpp-shell{background:linear-gradient(145deg,#fff,#fbfcff);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 18px 50px rgba(16,24,40,.07)}
.upload-zone{border:2px dashed #f0a4a7;border-radius:18px;padding:48px 24px;text-align:center;background:linear-gradient(145deg,#fff9f8,#f6f9ff);position:relative;cursor:pointer;transition:.2s}.upload-zone:hover,.upload-zone.dragover{border-color:var(--dpp);transform:translateY(-2px);box-shadow:0 12px 28px rgba(229,72,77,.1)}.upload-zone.loading{opacity:.65;pointer-events:none}.upload-zone>input{position:absolute;inset:0;opacity:0;cursor:pointer}.upload-zone h2{margin:13px 0 4px;color:var(--ink);font-size:1.35rem}.upload-zone>p{margin:0 0 17px;color:var(--muted)}.upload-zone>small{display:block;margin-top:14px;color:var(--muted)}.upload-mark{width:82px;height:76px;margin:auto;position:relative;display:grid;place-items:center;background:#fff;border:1px solid #f1c7c8;border-radius:13px;box-shadow:0 10px 24px rgba(180,35,43,.12);color:var(--dpp);font-weight:800}.upload-mark i{position:absolute;right:-12px;bottom:-10px;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:var(--dpp);color:#fff;font-style:normal;font-size:1.25rem}.choose-file{display:inline-block;padding:11px 24px;border-radius:10px;background:var(--dpp);color:#fff;font-weight:700}.upload-password{position:relative;z-index:2;max-width:430px;margin:24px auto 0;text-align:left}.upload-password label{display:block;margin-bottom:6px;color:#475467;font-size:.78rem;font-weight:700}.upload-password>div{display:flex}.upload-password input{min-width:0;flex:1;padding:11px 12px;border:1px solid var(--line);border-radius:9px 0 0 9px;font:inherit}.upload-password button{border:1px solid var(--line);border-left:0;border-radius:0 9px 9px 0;background:#fff;padding:0 14px;font-weight:700;cursor:pointer}
.editor-banner{display:none;padding:12px 15px;margin-bottom:14px;border-radius:10px;font-size:.87rem}.editor-banner.visible{display:block}.editor-banner.error{background:#fff0f0;border:1px solid #fac5c7;color:#9b1c24}.editor-banner.success{background:#ecfdf3;border:1px solid #abefc6;color:#067647}.editor-head{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:4px 2px 18px}.file-summary{display:flex;align-items:center;gap:12px;min-width:0}.file-summary>div:last-child{display:flex;flex-direction:column;min-width:0}.file-summary strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:360px;color:var(--ink)}.file-summary span{font-size:.8rem;color:var(--muted)}.file-icon{flex:none;width:46px;height:52px;display:grid;place-items:center;border-radius:9px;background:var(--dpp-soft);color:var(--dpp-dark);font-size:.72rem;font-weight:800}.stats-strip{display:flex;border:1px solid var(--line);border-radius:13px;overflow:hidden}.stats-strip>div{min-width:86px;padding:9px 15px;text-align:center;border-left:1px solid var(--line)}.stats-strip>div:first-child{border-left:0}.stats-strip span,.stats-strip b{display:block}.stats-strip span{font-size:.7rem;color:var(--muted)}.stats-strip b{font-size:1.05rem;color:var(--ink)}.stats-strip .delete-stat b{color:var(--dpp)}
.selection-panel{display:grid;grid-template-columns:minmax(310px,1fr) 1.2fr;gap:16px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--wash)}.range-box label{display:block;margin-bottom:6px;font-size:.79rem;font-weight:700;color:#344054}.range-box>div{display:flex}.range-box input{min-width:0;flex:1;padding:10px 12px;border:1px solid #cfd4dc;border-radius:9px 0 0 9px;font:inherit}.range-box button{border:0;border-radius:0 9px 9px 0;padding:0 15px;background:var(--ink);color:#fff;font-weight:700;cursor:pointer}.range-box small{display:block;margin-top:6px;color:var(--muted);font-size:.72rem}.quick-actions{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex-wrap:wrap}.quick-actions button{padding:9px 12px;border:1px solid #d0d5dd;border-radius:8px;background:#fff;color:#344054;font:600 .78rem inherit;cursor:pointer}.quick-actions button:hover:not(:disabled){border-color:var(--dpp);color:var(--dpp)}.quick-actions button:disabled{opacity:.4;cursor:not-allowed}.grid-guide{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:18px 2px 12px}.grid-guide p{margin:0;color:#475467;font-size:.84rem}.grid-guide span{white-space:nowrap;color:var(--muted);font-size:.75rem}.page-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(145px,1fr));gap:14px;max-height:650px;overflow:auto;padding:3px 3px 12px}.page-tile{appearance:none;border:1px solid var(--line);border-radius:12px;padding:8px;background:#fff;cursor:pointer;text-align:left;font:inherit;transition:.18s;box-shadow:0 4px 12px rgba(16,24,40,.04)}.page-tile:hover{border-color:#f09a9e;transform:translateY(-2px)}.page-preview{height:176px;display:grid;place-items:center;position:relative;overflow:hidden;background:#eef1f5;border-radius:7px}.page-preview canvas{max-width:100%;max-height:100%;display:none;box-shadow:0 2px 7px rgba(0,0,0,.12)}.page-preview canvas.ready{display:block}.page-placeholder{position:absolute;font-style:normal;color:#98a2b3;font-size:.75rem}.page-preview em{position:absolute;inset:auto 8px 8px;display:none;text-align:center;padding:6px;border-radius:7px;background:var(--dpp);color:#fff;font-style:normal;font-size:.75rem;font-weight:800}.page-meta{display:flex;justify-content:space-between;margin-top:8px;align-items:center}.page-meta b{font-size:.82rem;color:var(--ink)}.page-meta small{color:#667085}.page-tile.marked{border-color:var(--dpp);background:var(--dpp-soft)}.page-tile.marked .page-preview:after{content:"";position:absolute;width:150%;height:3px;background:var(--dpp);transform:rotate(-42deg);box-shadow:0 0 0 2px rgba(255,255,255,.75)}.page-tile.marked .page-preview{filter:saturate(.3);opacity:.78}.page-tile.marked .page-preview em{display:block;z-index:2}.page-tile.marked .page-meta b,.page-tile.marked .page-meta small{color:var(--dpp-dark)}
.export-panel{display:grid;grid-template-columns:1.2fr minmax(220px,.8fr) auto auto;gap:15px;align-items:end;margin-top:18px;padding:18px;border-radius:16px;background:linear-gradient(120deg,#172033,#253552);color:#fff}.export-panel h2{margin:0 0 4px;font-size:1.05rem}.export-panel p{margin:0;color:#cbd5e1;font-size:.79rem}.export-panel label{font-size:.72rem;font-weight:700}.filename-wrap{display:flex;margin-top:5px}.filename-wrap input{min-width:0;width:100%;padding:10px;border:0;border-radius:8px 0 0 8px;font:inherit}.filename-wrap span{padding:10px 9px;background:#edf0f5;color:#667085;border-radius:0 8px 8px 0}.submit-btn,.new-btn{height:41px;border-radius:9px;padding:0 16px;border:0;font:700 .8rem inherit;cursor:pointer;white-space:nowrap}.submit-btn{background:var(--dpp);color:#fff}.submit-btn:disabled{opacity:.48;cursor:not-allowed}.new-btn{background:transparent;color:#fff;border:1px solid #697586}.export-panel>small{grid-column:1/-1;color:#9eacc0;font-size:.69rem}
.feature-section,.preserve-guide,.dpp-steps,.dpp-faq{margin-top:55px}.section-heading{text-align:center;max-width:700px;margin:0 auto 22px}.section-heading>span{color:var(--dpp);font-weight:700;font-size:.76rem;text-transform:uppercase;letter-spacing:.08em}.section-heading h2,.preserve-guide h2,.dpp-steps h2,.dpp-faq h2{color:var(--ink)}.section-heading h2{margin:7px 0}.section-heading p{color:var(--muted)}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.feature-grid article,.preserve-guide article,.dpp-steps article{padding:20px;border:1px solid var(--line);border-radius:15px;background:#fff}.feature-grid b{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--dpp-soft);color:var(--dpp);font-size:1rem}.feature-grid h3,.dpp-steps h3{margin:14px 0 6px;color:var(--ink);font-size:.94rem}.feature-grid p,.preserve-guide p,.dpp-steps p{margin:0;color:var(--muted);font-size:.82rem;line-height:1.55}.preserve-guide>div,.dpp-steps>div{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.preserve-guide article strong{color:var(--dpp-dark)}.dpp-steps>div{grid-template-columns:repeat(4,1fr)}.dpp-steps article>b{color:var(--dpp);font-size:1.25rem}.dpp-faq{max-width:820px;margin-left:auto;margin-right:auto}.dpp-faq details{border-bottom:1px solid var(--line);padding:15px 2px}.dpp-faq summary{cursor:pointer;color:var(--ink);font-weight:700}.dpp-faq p{color:var(--muted);line-height:1.6}.progress-overlay{position:fixed;inset:0;display:none;z-index:9000;background:rgba(255,255,255,.96);align-items:center;justify-content:center;flex-direction:column;text-align:center}.progress-overlay.visible{display:flex}.progress-overlay h2{margin:18px 0 5px;color:var(--ink)}.progress-overlay p{margin:0;color:var(--muted)}.delete-loader{display:flex;gap:7px}.delete-loader span{width:13px;height:34px;border-radius:4px;background:var(--dpp);animation:dppPulse .8s infinite alternate}.delete-loader span:nth-child(2){animation-delay:.16s}.delete-loader span:nth-child(3){animation-delay:.32s}@keyframes dppPulse{to{transform:translateY(-12px);opacity:.45}}
@media(max-width:900px){.selection-panel{grid-template-columns:1fr}.quick-actions{justify-content:flex-start}.export-panel{grid-template-columns:1fr 1fr}.feature-grid{grid-template-columns:repeat(2,1fr)}.dpp-steps>div{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.dpp-shell{padding:12px;border-radius:16px}.upload-zone{padding:34px 14px}.editor-head{align-items:flex-start;flex-direction:column}.stats-strip{width:100%}.stats-strip>div{flex:1;min-width:0;padding:8px}.selection-panel{padding:12px}.range-box>div{display:grid;grid-template-columns:1fr}.range-box input,.range-box button{border-radius:8px}.range-box button{padding:10px;margin-top:7px}.quick-actions{display:grid;grid-template-columns:repeat(2,1fr)}.grid-guide{align-items:flex-start;flex-direction:column}.page-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.page-preview{height:150px}.export-panel{grid-template-columns:1fr}.export-panel>small{grid-column:auto}.submit-btn,.new-btn{width:100%}.feature-grid,.preserve-guide>div,.dpp-steps>div{grid-template-columns:1fr}.file-summary strong{max-width:240px}}