*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#fcfcfc;--card:#fff;--border:#e2e8f0;--text:#1e293b;--text2:#64748b;--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eef2ff;--success:#059669;--danger:#dc2626;--r:12px;--rs:8px}
@font-face{font-family:Inter;src:url('./fonts/inter-latin.woff2?v=3100e775e861') format('woff2');font-style:normal;font-weight:400 700;font-display:swap}
@font-face{font-family:'Noto Sans SC';src:url('./fonts/noto-sans-sc-400.woff2?v=3486178fd446') format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'Noto Sans SC';src:url('./fonts/noto-sans-sc-500.woff2?v=b093eecdc621') format('woff2');font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:'Noto Sans SC';src:url('./fonts/noto-sans-sc-700.woff2?v=b3a2f0d894f0') format('woff2');font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:'Noto Sans JP';src:url('./fonts/noto-sans-jp-400.woff2?v=130609deae3e') format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'Noto Sans JP';src:url('./fonts/noto-sans-jp-500.woff2?v=0c28a46f9baa') format('woff2');font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:'Noto Sans JP';src:url('./fonts/noto-sans-jp-700.woff2?v=1ee496764473') format('woff2');font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:'Noto Sans KR';src:url('./fonts/noto-sans-kr-400.woff2?v=2c745c54bf6a') format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'Noto Sans KR';src:url('./fonts/noto-sans-kr-500.woff2?v=fb963c87704c') format('woff2');font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:'Noto Sans KR';src:url('./fonts/noto-sans-kr-700.woff2?v=cdedc0a8f003') format('woff2');font-style:normal;font-weight:700;font-display:swap}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-synthesis:none;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}
html[lang="zh-CN"] body{font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif}
html[lang="ja"] body{font-family:'Noto Sans JP','Yu Gothic','Meiryo',sans-serif}
html[lang="ko"] body{font-family:'Noto Sans KR','Malgun Gothic','Apple SD Gothic Neo',sans-serif}
.header{position:relative;background:var(--card);border-bottom:1px solid var(--border);padding:16px 24px;display:flex;align-items:center}
.header-language{position:absolute;top:50%;right:max(24px,calc((100% - 1070px)/2 + 24px));transform:translateY(-50%)}
.logo{display:flex;align-items:center;margin-left:max(0px,calc((100vw - 1070px)/2));font-size:20px;font-weight:700;color:var(--text);text-decoration:none}
.logo-wordmark{display:flex;align-items:baseline;gap:0;font-size:36px;font-weight:900;line-height:1;white-space:nowrap;transform:scaleY(1.25);transform-origin:center}
.logo-svg{color:#2563eb}.logo-s{color:#dc2626}.logo-to{margin-left:8px;color:#6b7280}.logo-png{margin-left:8px;color:#f97316}
.logo-icon{width:32px;height:32px;display:flex;align-items:center;justify-content:center;flex:0 0 32px}.logo-icon img{display:block;width:32px;height:32px}
.lang-selector{position:relative}
.lang-btn{display:flex;align-items:center;justify-content:center;gap:5px;width:100px;min-width:100px;padding:9px 7px;border:1px solid #1d4ed8;border-radius:var(--rs);background:var(--card);color:#111827;font-size:13px;font-weight:500;cursor:pointer;transition:border-color .15s,box-shadow .15s;font-family:inherit;white-space:nowrap}
.lang-btn:hover{border-color:#1e40af;color:#111827;box-shadow:0 0 0 2px rgba(30,64,175,.14)}
.lang-dropdown{position:absolute;top:calc(100%+6px);right:0;width:100%;min-width:168px;background:var(--card);border:1px solid var(--border);border-radius:var(--rs);box-shadow:0 8px 24px rgba(0,0,0,.1);opacity:0;visibility:hidden;transform:translateY(-4px);transition:all .2s;z-index:50;overflow:hidden}
.lang-dropdown.open{opacity:1;visibility:visible;transform:translateY(0)}
.lang-option{padding:10px 14px;font-size:14px;cursor:pointer;transition:background .1s;color:var(--text)}
.lang-option{display:block;width:100%;border:0;background:transparent;font-family:inherit;text-align:left;appearance:none}
.lang-option:hover{background:var(--primary-light);color:var(--primary)}
.lang-option:focus-visible{outline:2px solid #60a5fa;outline-offset:-2px;background:var(--primary-light)}
.lang-option.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.container{max-width:1070px;margin:0 auto;padding:40px 24px}
.ptitle{text-align:center;margin-bottom:32px}
.ptitle h1{font-size:32px;font-weight:800;letter-spacing:-0.03em;margin-bottom:8px;color:#f97316}.ptitle h1 .title-neutral{color:var(--text)}
.ptitle p{color:var(--text2);font-size:18px}
.ptitle p strong{color:var(--text);font-weight:700}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:32px;margin-bottom:24px}
.upload-card{border-color:#d6e0ec;box-shadow:0 8px 20px rgba(59,130,246,.12)}
.upload-card .drop-zone{padding-bottom:108px}
.how-it-works-card{background:transparent;border:0;box-shadow:none;padding-bottom:0;margin:90px 0 0}
.drop-zone{border:2px dashed var(--border);border-radius:var(--r);padding:48px 24px;text-align:center;cursor:pointer;transition:all .2s}
.drop-zone:hover,.drop-zone.dragover{border-color:#93c5fd;background:#eff6ff}
.drop-zone input[type=file]{display:none}
.drop-zone-icon{width:48px;height:48px;margin:0 auto 16px;background:transparent;border-radius:50%;display:flex;align-items:center;justify-content:center}
.drop-zone-icon svg{width:24px;height:24px;color:#b94a48}
.drop-zone-text{font-weight:600;margin-bottom:4px}
.drop-zone-sub{color:var(--text2);font-size:14px}
.preview-area{display:none;margin-top:24px}
.preview-area.show{display:block}
.file-info{display:none;align-items:center;gap:12px;padding:12px 16px;background:var(--primary-light);border-radius:var(--rs);margin-bottom:16px}
.file-info-name{font-weight:600;font-size:14px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-info-size{color:var(--text2);font-size:13px}
.file-info-remove{cursor:pointer;color:var(--text2);padding:4px;border:0;border-radius:4px;background:transparent;display:flex}
.file-info-remove:hover{color:var(--danger);background:#fef2f2}
.preview-box{background:#f1f5f9;border-radius:var(--rs);padding:24px;display:flex;align-items:center;justify-content:center;min-height:240px;overflow:hidden;position:relative}.upload-main-preview{display:none}.preview-nav{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:#4f46e5;color:#fff;font-size:31px;line-height:36px;cursor:pointer;display:grid;place-items:center;z-index:2;box-shadow:0 4px 12px rgba(79,70,229,.25)}.preview-nav:hover:not(:disabled){background:#4338ca}.preview-nav:disabled{opacity:.35;cursor:not-allowed}.preview-nav.prev{left:14px}.preview-nav.next{right:14px}
.preview-box img{max-width:100%;max-height:360px}
.batch-preview-carousel{display:grid;grid-template-columns:42px minmax(0,1fr) 42px;align-items:center;gap:12px;margin-top:16px}.batch-preview-viewport{min-width:0;overflow:hidden;scroll-behavior:smooth}.batch-preview-grid{display:flex;gap:12px;margin:0}.batch-preview-item{position:relative;flex:0 0 calc((100% - 36px)/4);aspect-ratio:1;width:auto;height:auto;border:1px solid var(--border);border-radius:var(--rs);padding:5px;background:var(--card);cursor:pointer;overflow:hidden;display:grid;place-items:center}.batch-preview-item.active{border-color:var(--primary);box-shadow:0 0 0 2px rgba(79,70,229,.13)}.batch-preview-item img{width:100%;height:100%;object-fit:contain;background:#f1f5f9;border-radius:5px}.batch-preview-name{position:absolute;top:9px;left:9px;right:34px;max-width:calc(100% - 43px);padding:3px 7px;border-radius:999px;background:rgba(255,255,255,.92);color:var(--text);font-size:11px;font-weight:700;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;z-index:1;box-shadow:0 1px 4px rgba(15,23,42,.08);pointer-events:none}.batch-preview-remove{position:absolute;top:9px;right:9px;width:20px;height:20px;border:0;border-radius:50%;background:rgba(30,41,59,.78);color:#fff;font-size:17px;line-height:18px;cursor:pointer;z-index:2}.batch-preview-remove:hover{background:var(--danger)}.batch-preview-nav{width:42px;height:42px;padding:0;border:1px solid #bfdbfe;border-radius:50%;background:#eff6ff;color:#2563eb;display:grid;place-items:center;cursor:pointer;box-shadow:0 3px 8px rgba(37,99,235,.14);transition:background .15s,color .15s,box-shadow .15s}.batch-preview-nav svg{width:20px;height:20px;stroke:currentColor;stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}.batch-preview-nav:hover:not(:disabled){background:#2563eb;color:#fff;box-shadow:0 5px 12px rgba(37,99,235,.24)}.batch-preview-nav:disabled{opacity:.32;cursor:not-allowed;box-shadow:none}.batch-download-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:16px}.batch-download-list a{display:flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:600;text-decoration:none;border:1px solid var(--border);padding:9px 11px;border-radius:var(--rs)}.batch-download-list a:hover{background:var(--primary-light)}
.batch-preview-item.active{border-color:var(--border);box-shadow:none}.batch-preview-item:focus{outline:none}.batch-preview-item{cursor:default}.batch-preview-select{position:relative;display:grid;place-items:center;width:100%;height:100%;padding:5px;border:0;background:transparent;color:inherit;font:inherit;cursor:pointer}.batch-preview-select:focus-visible{outline:2px solid #2563eb;outline-offset:-2px}
.batch-preview-name{right:auto;width:calc(50% - 9px);max-width:calc(50% - 9px);padding:0;border-radius:0;background:transparent;box-shadow:none}.batch-preview-remove{border:1px solid rgba(255,255,255,.98);border-radius:0;background:#fff;color:var(--danger);font-weight:800;display:grid;place-items:center;box-shadow:0 1px 5px rgba(37,99,235,.18);transition:background-color .15s,color .15s,box-shadow .15s}.batch-preview-remove:hover{background:var(--danger);color:#fff;box-shadow:none}
.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.options-card{display:none}.options-card.show{display:block}
.options-card input,.options-card select{pointer-events:auto}
.options-title{font-size:16px;font-weight:600;margin-bottom:16px}
.opt{display:flex;flex-direction:column;gap:6px}
.opt label{font-size:13px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.03em}
.opt input,.opt select{padding:10px 12px;border:1px solid var(--border);border-radius:var(--rs);font-size:14px;font-family:inherit;background:var(--card);color:var(--text);outline:none}
.opt input:focus,.opt select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.opt input[type=color]{height:44px;padding:4px;cursor:pointer}
.opt-hint{font-size:12px;color:var(--text2)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--rs);font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;border:1px solid var(--border);background:var(--card);color:var(--text);transition:all .15s;text-decoration:none;white-space:nowrap}
.btn:hover{background:#f1f5f9}
.btn-p{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-p:hover{background:var(--primary-hover)}
#convertBtn:not(:disabled){background:#2563eb;border-color:#2563eb}
#convertBtn:not(:disabled):hover{background:#1d4ed8;border-color:#1d4ed8}
.btn-p:disabled{opacity:.5;cursor:not-allowed}
.btn-group{display:flex;gap:12px;flex-wrap:wrap}.btn-group .btn{justify-content:center}
.result-area{display:none;margin-top:24px;border-top:1px solid var(--border);padding-top:24px}
.result-area.show{display:block}
.result-info{display:flex;align-items:center;gap:8px;color:var(--success);font-weight:600;font-size:15px;margin-bottom:16px}
.result-meta-row{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin-top:16px}
.result-size{font-size:13px;color:var(--text2)}
.footer{border-top:1px solid var(--border);background:var(--card);padding:24px;text-align:center;color:var(--text2);font-size:14px}
.footer p{margin-bottom:10px}
.footer-link{border:0;background:transparent;color:var(--text2);font:inherit;font-weight:400;cursor:pointer;padding:4px 6px}
 .footer-link{text-decoration:none}
 .footer-link:hover{text-decoration:underline}
.privacy-page-header{background:var(--card);border-bottom:1px solid var(--border);padding:16px 24px}
.privacy-page-header-inner{width:min(1070px,100%);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.privacy-page-brand{color:var(--text);text-decoration:none;display:inline-flex;align-items:center}
.privacy-language-menu{position:relative;color:var(--text);font-size:14px}
.privacy-language-menu summary{list-style:none;cursor:pointer;border:1px solid #1d4ed8;border-radius:var(--rs);padding:9px 32px 9px 12px;min-width:110px;position:relative;text-align:center}
.privacy-language-menu summary::-webkit-details-marker{display:none}
.privacy-language-menu summary::after{content:"⌄";position:absolute;right:11px;top:7px;color:#2563eb;font-size:16px}
.privacy-language-menu[open] summary{border-color:#1e40af;box-shadow:0 0 0 2px rgba(30,64,175,.14)}
.privacy-language-menu ul{position:absolute;z-index:10;right:0;top:calc(100% + 6px);min-width:168px;padding:6px 0;margin:0;list-style:none;background:var(--card);border:1px solid var(--border);border-radius:var(--rs);box-shadow:0 8px 24px rgba(0,0,0,.1)}
.privacy-language-menu a{display:block;padding:9px 14px;color:var(--text);text-decoration:none;white-space:nowrap}
.privacy-language-menu a:hover,.privacy-language-menu a[aria-current="page"]{background:var(--primary-light);color:var(--primary)}
.privacy-page-main{width:min(960px,100%);margin:0 auto;padding:64px 24px 80px}
.privacy-page-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:40px;box-shadow:0 8px 20px rgba(59,130,246,.1)}
.privacy-page-eyebrow{margin:0 0 10px;color:var(--primary);font-size:14px;font-weight:700;letter-spacing:.04em}
.privacy-page-card h1{margin:0 0 8px;font-size:32px;line-height:1.25;color:var(--text)}
.privacy-page-updated{margin:0 0 28px;color:var(--text2);font-size:14px}
.privacy-page-intro{margin:0 0 28px;color:var(--text2);font-size:18px;line-height:1.75}
.privacy-page-section{padding:24px 0;border-top:1px solid var(--border)}
.privacy-page-section h2{margin:0 0 10px;font-size:22px;line-height:1.35;color:var(--text)}
.privacy-page-section p{margin:0;color:var(--text2);font-size:17px;line-height:1.8;white-space:pre-line}
.privacy-page-home{display:inline-block;margin-top:28px;color:#2563eb;font-size:16px;font-weight:700;text-decoration:none}
.privacy-page-home:hover{text-decoration:underline}
.privacy-page-footer{padding:20px 24px}
 .preview-nav{width:42px;height:42px;padding:0;border:1px solid #bfdbfe;border-radius:50%;background:#eff6ff;color:#2563eb;font-size:0;box-shadow:0 3px 8px rgba(37,99,235,.14);transition:background .15s,color .15s,box-shadow .15s}
 .preview-nav svg{width:20px;height:20px;stroke:currentColor;stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
 .preview-nav:hover:not(:disabled){background:#2563eb;color:#fff;box-shadow:0 5px 12px rgba(37,99,235,.24)}
 .preview-nav:disabled{opacity:.32;cursor:not-allowed;box-shadow:none}
.privacy-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:24px}
.privacy-modal[hidden]{display:none}
.privacy-backdrop{position:absolute;inset:0;background:rgba(15,23,42,.48)}
.privacy-dialog{position:relative;width:min(720px,100%);max-height:calc(100vh - 48px);overflow:auto;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:32px;box-shadow:0 20px 50px rgba(15,23,42,.22);text-align:left}
.privacy-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:var(--card);color:var(--text2);display:grid;place-items:center;cursor:pointer}
.privacy-close:hover{color:var(--danger);background:#fef2f2;border-color:#fecaca}
.privacy-dialog h2{font-size:24px;line-height:1.3;padding-right:48px;margin-bottom:4px}
.privacy-updated{font-size:13px;color:var(--text2);margin-bottom:20px}
.privacy-intro{font-size:15px;line-height:1.7;color:var(--text2);margin-bottom:22px}
.privacy-section{padding:18px 0;border-top:1px solid var(--border)}
.privacy-section h3{font-size:17px;margin-bottom:7px}
.privacy-section p{font-size:15px;line-height:1.75;color:var(--text2)}
 .privacy-summary{background:transparent;border:0;padding:0 0 16px;margin:0 0 24px}
.privacy-summary h2{font-size:22px;font-weight:700;margin-bottom:20px}
.privacy-summary-list{display:grid;grid-template-columns:1fr;gap:16px}
.privacy-summary-list,.feature-summary-list,.application-summary-list{margin-left:35px}
 .privacy-summary-item{position:relative;padding-left:18px;font-size:18px;font-weight:700;line-height:1.65;color:rgb(100, 116, 139)}
 .privacy-summary-item::before{content:"✓";position:absolute;left:0;top:.825em;color:rgb(100, 116, 139);font-size:14px;font-weight:900;line-height:1;transform:translateY(-50%)}
 .feature-summary{background:transparent;border:0;padding:0 0 16px;margin-bottom:24px}
.feature-summary h2{font-size:22px;font-weight:700;margin-bottom:20px}
.feature-summary-list{display:grid;grid-template-columns:1fr;gap:16px}
 .feature-summary-item{position:relative;padding-left:18px;color:rgb(100, 116, 139)}
 .feature-summary-item::before{content:"";position:absolute;left:0;top:.825em;width:7px;height:7px;border-radius:50%;background:#111827;transform:translateY(-50%)}
.feature-summary-item h3{margin:0;font-size:18px;font-weight:400;line-height:1.65;color:inherit}
 .application-summary{background:transparent;border:0;padding:8px 0 0;margin:0 0 65px}
.application-summary h2{font-size:22px;font-weight:700;margin-bottom:20px}
.application-summary-list{display:grid;grid-template-columns:1fr;gap:12px}
.application-summary-item{position:relative;padding-left:18px;display:grid;grid-template-columns:150px minmax(0,1fr);column-gap:8px;color:rgb(100, 116, 139)}
.application-summary-item{--application-label-width:150px}html[lang="zh-CN"] .application-summary-item{grid-template-columns:82px minmax(0,1fr)}html[lang="ja"] .application-summary-item{grid-template-columns:120px minmax(0,1fr)}html[lang="ko"] .application-summary-item{grid-template-columns:135px minmax(0,1fr)}html[lang="es"] .application-summary-item{grid-template-columns:175px minmax(0,1fr)}html[lang="fr"] .application-summary-item{grid-template-columns:160px minmax(0,1fr)}html[lang="de"] .application-summary-item{grid-template-columns:170px minmax(0,1fr)}html[lang="pt"] .application-summary-item{grid-template-columns:170px minmax(0,1fr)}html[lang="pl"] .application-summary-item{grid-template-columns:220px minmax(0,1fr)}
 .application-summary-item::before{content:"";position:absolute;left:0;top:.825em;width:7px;height:7px;border-radius:50%;background:#111827;transform:translateY(-50%)}
.application-summary-item h3,.application-summary-item p{min-width:0;margin:0;font-size:18px;font-weight:400;line-height:1.65;text-align:left}
.application-summary-item h3{white-space:nowrap}
.local-processing-note{position:relative;width:100%;min-height:60px;margin:90px 0 50px;padding:15px 24px 15px 56px;display:block;background:linear-gradient(90deg,#f8fbff 0%,#f0f7ff 55%,#e6f1ff 100%);border:1px solid #dbeafe;border-radius:0;font-size:18px;line-height:1.45;text-align:left;color:var(--text);white-space:normal;overflow:visible}
.local-processing-note::before{content:"";position:absolute;top:0;bottom:0;left:0;width:5px;background:#2563eb}
.local-processing-lead{color:#2563eb;font-weight:700}
.format-comparison-section{margin:50px 0 60px;text-align:left}
.format-comparison-section h2{margin:0 0 30px;font-size:22px;font-weight:700;line-height:1.35;color:var(--text)}
.format-comparison-scroll{width:100%;overflow:auto;border:1px solid #fff;border-radius:8px;box-shadow:0 6px 16px rgba(148,163,184,.18)}
.format-comparison-scroll{-webkit-overflow-scrolling:touch;scroll-behavior:smooth;overscroll-behavior-inline:contain;scrollbar-color:#93c5fd transparent;touch-action:pan-x}
.format-comparison-table{width:100%;min-width:680px;border-collapse:separate;border-spacing:0;color:var(--text);font-size:16px;line-height:1.5}
.format-comparison-table th,.format-comparison-table td{padding:13px 16px;border-bottom:1px solid #e5e7eb;text-align:left;vertical-align:top}
.format-comparison-table thead{background:linear-gradient(90deg,#3b82f6 0%,#2563eb 48%,#1e40af 100%)}
.format-comparison-table thead th{background:transparent;border-top:1px solid #3b82f6;color:#fff;font-weight:700}
.format-comparison-table thead th:first-child{border-top-left-radius:7px}
.format-comparison-table thead th:last-child{border-top-right-radius:7px}
.format-comparison-table tbody th{width:18%;font-weight:600;white-space:nowrap}
.format-comparison-table tbody tr:nth-child(odd){background:#f3f6f9}
.format-comparison-table tbody tr>th,.format-comparison-table tbody tr>td{transition:background-color .15s ease}
.format-comparison-table tbody tr:hover>th,.format-comparison-table tbody tr:hover>td{background:#e8f3ff}
.original-preservation-note{position:relative;width:100%;min-height:60px;margin:45px 0;padding:15px 24px 15px 56px;display:block;background:linear-gradient(90deg,#f7fdf8 0%,#eefaf1 55%,#e0f5e7 100%);border:1px solid #ccebd5;border-radius:0;font-size:18px;line-height:1.45;text-align:left;color:var(--text);white-space:normal;overflow:visible}
.local-processing-note span,.original-preservation-note span{font-size:18px}
#localProcessingBody,#originalPreservationBody{overflow-wrap:anywhere;word-break:normal}
.original-preservation-note::before{content:"";position:absolute;top:0;bottom:0;left:0;width:5px;background:#16a34a}
.original-preservation-lead{color:#15803d;font-weight:700}
.noscript-notice{max-width:1150px;margin:12px auto;padding:12px 16px;border:1px solid #fed7aa;background:#fff7ed;color:#9a3412;font-size:16px;text-align:center}
body.modal-open{overflow:hidden}
.spinner{display:inline-block;width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
#convertBtn,#downloadBtn{justify-content:center}
#convertBtn{position:relative;transition:background-color .15s,border-color .15s,color .15s}
#convertBtn svg,#convertBtn .spinner{width:18px;height:18px;flex:0 0 18px}
#convertBtn:disabled{opacity:1;cursor:default;background:var(--primary);border-color:var(--primary);color:#fff}
#convertBtn:disabled,#convertBtn:disabled svg,#convertBtn:disabled svg *{opacity:1!important;filter:none!important;color:#fff!important;stroke:#fff!important;-webkit-text-fill-color:#fff}
.is-converting#convertBtn:disabled{background:#94a3b8;border-color:#94a3b8;cursor:wait}
.conversion-complete#convertBtn:disabled{background:#94a3b8;border-color:#94a3b8;color:#fff;pointer-events:none;cursor:default!important}
.download-complete#downloadBtn{background:#94a3b8;border-color:#94a3b8;color:#fff;pointer-events:none;cursor:not-allowed}
.is-converting .convert-count-badge{display:none}
.convert-count-badge{position:absolute;top:-10px;right:-10px;min-width:22px;height:22px;padding:0 5px;border:2px solid var(--card);border-radius:50%;display:grid;place-items:center;background:#2563eb;color:#fff;font-size:12px;font-weight:800;line-height:1;box-shadow:0 2px 5px rgba(37,99,235,.2);pointer-events:none}
.convert-count-badge[hidden]{display:none}
#downloadBtn{position:relative}
#downloadBtn{background:#10b981;border-color:#10b981}
#downloadBtn:hover{background:#059669;border-color:#059669}
.download-count-badge{position:absolute;top:-10px;right:-10px;min-width:22px;height:22px;padding:0 5px;border:2px solid var(--card);border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-size:12px;font-weight:800;line-height:1;box-shadow:0 2px 5px rgba(79,70,229,.2);pointer-events:none}
#downloadBtn .download-count-badge{background:#10b981;box-shadow:0 2px 5px rgba(16,185,129,.2)}
.download-count-badge[hidden]{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(100px);background:#1e293b;color:#fff;padding:12px 24px;border-radius:var(--rs);font-size:14px;opacity:0;transition:all .3s;pointer-events:none;z-index:100;box-shadow:0 4px 12px rgba(0,0,0,.15)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.error-msg{display:none;padding:12px 16px;background:#fef2f2;color:var(--danger);border-radius:var(--rs);font-size:14px;margin-bottom:16px;border:1px solid #fecaca}
.error-msg.show{display:block}
.steps-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.how-it-works-title{font-size:22px;font-weight:700;margin-bottom:20px;text-align:center}
 .what-is-section{margin:150px 0 0;padding-left:0;text-align:left}
.what-is-section h2{margin:0 0 12px;font-size:22px;font-weight:700;line-height:1.35;color:var(--text)}
.what-is-section p{margin:0;font-size:18px;line-height:1.65;color:var(--text2)}
.step-item{min-width:0;display:flex;flex-direction:column;align-items:center;text-align:center}
.step-icon{width:46px;height:46px;background:#eff6ff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:#3b82f6}
.step-icon svg{stroke-width:2.8}
.step-copy{width:100%;display:grid;justify-items:center;text-align:center}
.step-copy h3,.step-copy p{width:100%;margin-left:auto;margin-right:auto;text-align:center}
.step-title{font-size:18px;font-weight:400;margin-bottom:3px;color:var(--text2)}
.step-description{max-width:240px;font-size:18px;font-weight:400;line-height:1.6;color:var(--text2)}
@media(max-width:640px){.steps-grid{display:flex;flex-direction:column;align-items:stretch}.step-item{width:100%}.step-icon{margin-bottom:14px}.step-description{max-width:320px;font-size:16px;font-weight:500;line-height:1.55}}
.lang-btn:focus-visible,.btn:focus-visible,.footer-link:focus-visible,.file-info-remove:focus-visible,.preview-nav:focus-visible,.batch-preview-nav:focus-visible,.batch-preview-item:focus-visible,.privacy-close:focus-visible{outline:3px solid #60a5fa;outline-offset:3px}
@media(min-width:641px){.how-it-works-card{padding-left:0;padding-right:0}.step-item:first-child{justify-self:start;width:max-content}.step-item:last-child{justify-self:end;width:max-content}}
@media(max-width:640px){.container{padding:24px 16px}.card{padding:20px}.ptitle h1{font-size:24px}.options-grid{grid-template-columns:1fr}.btn-group{flex-direction:column}.btn-group .btn{width:100%;justify-content:center}.batch-preview-carousel{grid-template-columns:36px minmax(0,1fr) 36px;gap:8px}.batch-preview-item{flex-basis:calc((100% - 12px)/2)}.batch-preview-nav{width:36px;height:36px}.steps-grid{grid-template-columns:1fr;gap:28px}.application-summary{padding-top:8px;padding-bottom:0;margin-bottom:65px}.feature-summary{padding-top:0;padding-bottom:16px}.privacy-summary{padding:0 0 16px;margin:0 0 16px}.what-is-section{margin:150px 0 0;padding-left:0}.format-comparison-section{margin:40px 0 50px}.format-comparison-table{font-size:15px}.format-comparison-table th,.format-comparison-table td{padding:12px}.local-processing-note,.original-preservation-note{height:auto;min-height:60px;padding:6px 12px;white-space:normal;line-height:1.45}.privacy-modal{padding:12px}.privacy-dialog{max-height:calc(100vh - 24px);padding:24px 20px}.privacy-dialog h2{font-size:21px}}
@media(max-width:640px){.header-language{right:16px}.privacy-page-header{padding:14px 16px}.privacy-page-header-inner{gap:12px}.privacy-page-brand .logo-wordmark{font-size:26px;transform:none}.privacy-page-main{padding:36px 16px 48px}.privacy-page-card{padding:24px 20px}.privacy-page-card h1{font-size:26px}.privacy-page-intro{font-size:17px}.privacy-page-section p{font-size:16px}.privacy-language-menu summary{min-width:96px;padding-left:8px;padding-right:26px}}
@media(max-width:360px){.logo-wordmark{font-size:18px;transform:none}}
@media(max-width:640px){html:not([lang="zh"]) .application-summary-item{grid-template-columns:1fr;row-gap:2px}html:not([lang="zh"]) .application-summary-item h3{text-align:left}}
@media(max-width:640px){.how-it-works-card{padding-bottom:0;margin-bottom:0}}

@media(prefers-color-scheme:dark){
:root{color-scheme:dark;--bg:#0f172a;--card:#111827;--border:#334155;--text:#f8fafc;--text2:#cbd5e1;--primary:#818cf8;--primary-hover:#a5b4fc;--primary-light:rgba(129,140,248,.18);--success:#34d399;--danger:#f87171}
.preview-box,.batch-preview-item img,.btn:hover{background:#1e293b}
.preview-nav{background:var(--primary);box-shadow:0 4px 12px rgba(129,140,248,.28)}
.preview-nav:hover:not(:disabled){background:var(--primary-hover)}
.batch-preview-name{background:transparent;box-shadow:none}
.batch-preview-nav{border-color:#3b82f6;background:#172554;color:#93c5fd;box-shadow:0 3px 8px rgba(59,130,246,.18)}
.batch-preview-nav:hover:not(:disabled){background:#2563eb;color:#fff}
.file-info-remove:hover,.privacy-close:hover{background:#3f1d27;border-color:#7f1d1d}
.privacy-summary-item::before,.feature-summary-item::before,.application-summary-item::before{color:#f8fafc;background:#f8fafc}
.local-processing-note{background:linear-gradient(90deg,#0f2744 0%,#12345b 55%,#16406d 100%);border-color:#1d4f8d}
.local-processing-note::before{background:#60a5fa}
.local-processing-lead{color:#93c5fd}
.format-comparison-scroll{border-color:#334155;box-shadow:0 6px 16px rgba(2,6,23,.28)}
.format-comparison-table th,.format-comparison-table td{border-color:#334155}
.format-comparison-table thead th{background:#172554;border-color:#334155}
.original-preservation-note{background:linear-gradient(90deg,#102b20 0%,#153d2b 55%,#1a4c35 100%);border-color:#236341}
.original-preservation-note::before{background:#4ade80}
.original-preservation-lead{color:#86efac}
.error-msg{background:#3f1d27;border-color:#7f1d1d;color:#fca5a5}
.toast{background:#020617}
.privacy-page-card{box-shadow:0 8px 20px rgba(2,6,23,.28)}
.privacy-language-menu summary{border-color:#3b82f6}
.privacy-language-menu ul{box-shadow:0 8px 24px rgba(0,0,0,.28)}
}