:root{--primary: #4f6ef7;--primary-hover: #3d5bef;--primary-light: #eef1fe;--success: #16a34a;--success-light: #eaf7ef;--danger: #dc2626;--danger-light: #fdeeee;--warning: #d97706;--bg: #f6f7fb;--bg-card: #ffffff;--bg-subtle: #f2f4f8;--bg-hover: #f0f2f7;--border: #e5e8ef;--border-strong: #d4d9e3;--text: #1f2329;--text-2: #4b5563;--text-3: #8a94a6;--shadow-sm: 0 1px 2px rgba(31, 35, 41, .05);--shadow-md: 0 4px 16px rgba(31, 35, 41, .08);--shadow-lg: 0 12px 40px rgba(31, 35, 41, .14);--radius: 12px;--radius-sm: 8px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--mono: Consolas, Monaco, "Courier New", monospace}[data-theme=dark]{--primary: #6b86ff;--primary-hover: #8299ff;--primary-light: #232a45;--success: #34d399;--success-light: #14301f;--danger: #f87171;--danger-light: #3a1d1d;--bg: #12151c;--bg-card: #1a1f2b;--bg-subtle: #202632;--bg-hover: #262d3c;--border: #2c3444;--border-strong: #3a4457;--text: #e8ebf2;--text-2: #aab3c5;--text-3: #6d7690;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .5)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}button{font-family:var(--font);cursor:pointer}input,select{font-family:var(--font)}.app{min-height:100vh;display:flex;flex-direction:column}.container{max-width:980px;margin:0 auto;padding:0 20px;width:100%}.header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg-card) 86%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;gap:14px;height:60px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.3px}.logo-badge{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#7c5cfc);display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;box-shadow:0 2px 8px #4f6ef759}.logo small{font-size:12px;font-weight:500;color:var(--text-3);margin-left:2px}.header-spacer{flex:1}.header-link{color:var(--text-2);text-decoration:none;font-size:14px;padding:7px 12px;border-radius:8px;transition:.15s}.header-link:hover{background:var(--bg-hover);color:var(--text)}.theme-toggle{border:1px solid var(--border);background:var(--bg-card);color:var(--text-2);width:38px;height:38px;border-radius:10px;font-size:17px;display:grid;place-items:center;transition:.15s}.theme-toggle:hover{background:var(--bg-hover);color:var(--text)}.hero{text-align:center;padding:52px 0 30px}.hero h1{font-size:38px;font-weight:800;letter-spacing:-.8px;margin:0 0 14px}.hero h1 .grad{background:linear-gradient(120deg,var(--primary),#9b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{font-size:16px;color:var(--text-2);max-width:620px;margin:0 auto 26px}.hero-badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.hero-badge{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card);border:1px solid var(--border);padding:7px 14px;border-radius:99px;font-size:13px;color:var(--text-2);box-shadow:var(--shadow-sm)}.hero-badge b{color:var(--success);font-weight:700}.dropzone{border:2px dashed var(--border-strong);border-radius:18px;background:var(--bg-card);padding:46px 24px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s,transform .15s;position:relative}.dropzone:hover{border-color:var(--primary);background:color-mix(in srgb,var(--primary-light) 40%,var(--bg-card))}.dropzone.dragging{border-color:var(--primary);background:var(--primary-light);transform:scale(1.005)}.dropzone-icon{font-size:42px;margin-bottom:10px}.dropzone-title{font-size:17px;font-weight:700;margin-bottom:6px}.dropzone-sub{font-size:13px;color:var(--text-3)}.dropzone input{display:none}.format-chips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:22px}.chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card);border:1px solid var(--border);border-radius:99px;padding:5px 12px;font-size:12.5px;color:var(--text-2)}.chip .dot{width:7px;height:7px;border-radius:50%}.queue-section{margin:34px 0 20px}.queue-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}.queue-head h2{font-size:18px;margin:0;font-weight:700}.queue-count{background:var(--primary-light);color:var(--primary);font-size:12.5px;font-weight:700;border-radius:99px;padding:2px 10px}.queue-actions{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}.btn{border:1px solid var(--border);background:var(--bg-card);color:var(--text);font-size:13.5px;font-weight:600;padding:8px 16px;border-radius:10px;transition:.15s;display:inline-flex;align-items:center;gap:6px}.btn:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border-strong)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px #4f6ef74d}.btn.primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}.btn.small{padding:5px 11px;font-size:12.5px;border-radius:8px}.btn.ghost{border-color:transparent;background:transparent;color:var(--text-2)}.btn.ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.file-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;box-shadow:var(--shadow-sm);transition:border-color .2s}.file-card.done{border-color:color-mix(in srgb,var(--success) 45%,var(--border))}.file-card.error{border-color:color-mix(in srgb,var(--danger) 45%,var(--border))}.file-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.file-icon{width:40px;height:40px;border-radius:10px;flex-shrink:0;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff}.file-icon.markdown{background:linear-gradient(135deg,#4f6ef7,#6d8cff)}.file-icon.docx{background:linear-gradient(135deg,#2b6cb0,#4a90d9)}.file-icon.html{background:linear-gradient(135deg,#e44d26,#f7913f)}.file-icon.pdf{background:linear-gradient(135deg,#d64545,#e87070)}.file-icon.xlsx,.file-icon.csv{background:linear-gradient(135deg,#1e9e6a,#35c78b)}.file-icon.json{background:linear-gradient(135deg,#b7791f,#d69e2e)}.file-icon.txt{background:linear-gradient(135deg,#6b7280,#9ca3af)}.file-icon.image{background:linear-gradient(135deg,#805ad5,#a37bf0)}.file-icon.pptx{background:linear-gradient(135deg,#c2410c,#ea7c3c)}.file-meta{min-width:0;flex:1}.file-name{font-weight:650;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-sub{font-size:12.5px;color:var(--text-3);margin-top:1px}.file-sub .ok{color:var(--success);font-weight:600}.file-sub .err{color:var(--danger);font-weight:600}.flow{display:flex;align-items:center;gap:8px}.flow .tag{background:var(--bg-subtle);border:1px solid var(--border);border-radius:8px;padding:4px 10px;font-size:12.5px;font-weight:600;color:var(--text-2);white-space:nowrap}.flow .arrow{color:var(--text-3);font-size:13px}.fselect{position:relative;display:inline-block}.fselect-toggle{display:inline-flex;align-items:center;gap:7px;background:var(--bg-card);color:var(--text);border:1px solid var(--border-strong);border-radius:8px;padding:5px 10px;font-size:12.5px;font-weight:600;cursor:pointer;min-width:96px;transition:border-color .15s,box-shadow .15s;white-space:nowrap}.fselect-toggle:hover:not(:disabled){border-color:var(--primary)}.fselect-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.fselect-toggle:disabled{opacity:.55;cursor:not-allowed}.fselect-toggle.open{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}.fselect-value{flex:1;text-align:left}.fselect-caret{color:var(--text-3);font-size:11px;transition:transform .18s}.fselect-caret.up{transform:rotate(180deg)}.fselect-menu{position:absolute;top:calc(100% + 6px);left:0;z-index:80;min-width:100%;margin:0;padding:5px;list-style:none;background:var(--bg-card);border:1px solid var(--border-strong);border-radius:10px;box-shadow:var(--shadow-lg);animation:fselectIn .14s ease;min-width:128px}.fselect-menu.up{top:auto;bottom:calc(100% + 6px)}@keyframes fselectIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.fselect-option{display:flex;align-items:center;gap:6px;padding:7px 10px;border-radius:7px;font-size:13px;color:var(--text-2);cursor:pointer;white-space:nowrap;transition:background .12s}.fselect-option:hover,.fselect-option.active{background:var(--bg-hover);color:var(--text)}.fselect-option.selected{color:var(--primary);font-weight:650}.fselect-check{width:12px;font-size:11px;flex-shrink:0}.file-actions{display:flex;gap:6px;align-items:center;margin-left:auto}.img-opts{display:flex;gap:12px;align-items:center;margin-top:10px;padding-top:10px;border-top:1px dashed var(--border);flex-wrap:wrap}.img-opts label{font-size:12.5px;color:var(--text-2);display:flex;align-items:center;gap:6px}.img-opts input[type=range]{width:110px;accent-color:var(--primary)}.img-opts .q-val{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;min-width:34px}.progress{height:6px;background:var(--bg-subtle);border-radius:99px;overflow:hidden;margin-top:10px}.progress>div{height:100%;background:linear-gradient(90deg,var(--primary),#7c5cf6);border-radius:99px;transition:width .25s}.progress.err>div{background:var(--danger)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#0f12198c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:grid;place-items:center;padding:24px;animation:fadeIn .18s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-card);border-radius:16px;box-shadow:var(--shadow-lg);width:min(860px,100%);max-height:88vh;display:flex;flex-direction:column;overflow:hidden;animation:pop .2s}@keyframes pop{0%{transform:translateY(10px) scale(.98);opacity:0}to{transform:none;opacity:1}}.modal-head{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--border)}.modal-head h3{margin:0;font-size:15.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.modal-head .btn{margin-left:auto}.modal-body{overflow:auto;flex:1;background:var(--bg-subtle)}.modal-body iframe{width:100%;height:100%;min-height:60vh;border:none;background:#fff;display:block}.modal-body pre{margin:0;padding:18px;font-family:var(--mono);font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-all;color:var(--text)}.section{margin:44px 0}.section-title{font-size:22px;font-weight:800;letter-spacing:-.4px;margin:0 0 6px}.section-sub{color:var(--text-2);font-size:14px;margin:0 0 20px}.matrix{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}.matrix-row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);flex-wrap:wrap}.matrix-row:last-child{border-bottom:none}.matrix-row:hover{background:var(--bg-hover)}.matrix-from{display:flex;align-items:center;gap:9px;font-weight:700;font-size:14px;min-width:150px}.matrix-from .file-icon{width:30px;height:30px;font-size:11px;border-radius:8px}.matrix-to{display:flex;gap:6px;flex-wrap:wrap}.matrix-to .tag{background:var(--primary-light);color:var(--primary);border-radius:7px;padding:3px 10px;font-size:12.5px;font-weight:650}.faq{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.faq-item{border-bottom:1px solid var(--border)}.faq-item:last-child{border-bottom:none}.faq-q{width:100%;text-align:left;background:none;border:none;padding:16px 18px;font-size:14.5px;font-weight:650;color:var(--text);display:flex;align-items:center;gap:10px}.faq-q .caret{margin-left:auto;color:var(--text-3);transition:transform .2s}.faq-item.open .faq-q .caret{transform:rotate(180deg)}.faq-a{padding:0 18px 16px;font-size:14px;color:var(--text-2);line-height:1.8;display:none}.faq-item.open .faq-a{display:block}.faq-a code{background:var(--bg-subtle);padding:1px 6px;border-radius:5px;font-family:var(--mono);font-size:12.5px}.footer{border-top:1px solid var(--border);margin-top:60px;padding:28px 0 36px}.footer-inner{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}.footer p{margin:0;font-size:13px;color:var(--text-3);line-height:1.8}.footer .tech{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.footer .tech span{background:var(--bg-subtle);border-radius:6px;padding:2px 8px;font-size:11.5px;color:var(--text-2)}.toast-wrap{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center}.toast{background:var(--text);color:var(--bg-card);padding:10px 18px;border-radius:10px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow-lg);animation:toastIn .22s}.toast.success{background:var(--success);color:#fff}.toast.error{background:var(--danger);color:#fff}@keyframes toastIn{0%{transform:translateY(12px);opacity:0}to{transform:none;opacity:1}}.empty-tip{text-align:center;color:var(--text-3);font-size:13.5px;padding:26px 0 6px}@media (max-width: 640px){.hero h1{font-size:29px}.file-row{gap:8px}.file-actions{margin-left:0;width:100%}.queue-actions{width:100%}.matrix-from{min-width:0}}