:root{color-scheme:light;--bg: #f5f5f7;--surface: #ffffff;--surface-soft: #f2f2f7;--text: #1d1d1f;--muted: #6e6e73;--subtle: #86868b;--line: #d8d8de;--line-strong: #b9bac3;--accent: #0071e3;--accent-dark: #005bb5;--accent-soft: #eaf3ff;--blue: #0071e3;--green: #2e9d62;--orange: #bf5b17;--indigo: #5856d6;--red: #d70015;--shadow: 0 18px 48px rgba(0, 0, 0, .08);--radius: 8px;font-family:Inter,PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;background:var(--bg);color:var(--text);letter-spacing:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100vh;display:grid;grid-template-rows:64px 1fr 46px;background:linear-gradient(180deg,#ffffffe0,#f5f5f7f2),var(--bg)}.topbar{display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(180px,1fr);align-items:center;gap:20px;padding:0 36px;border-bottom:1px solid rgba(0,0,0,.08);background:#ffffffc2;-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px)}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-size:22px;font-weight:700;width:fit-content}.brand-mark{width:32px;height:32px;display:grid;place-items:center;border-radius:8px;background:#1d1d1f;color:#fff;font-size:18px;font-weight:800;box-shadow:0 10px 24px #00000024}.nav{display:inline-flex;align-items:stretch;height:42px;gap:4px;padding:3px;border:1px solid rgba(0,0,0,.06);border-radius:999px;background:#f2f2f7db}.nav-button,.icon-button,.format-card,.primary-button,.secondary-button,.outline-button,.switch{border:0;cursor:pointer}.nav-button{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:7px;min-width:104px;padding:0 16px;border-radius:999px;background:transparent;color:#424245;font-size:14px;font-weight:650}.nav-button.is-active{background:#1d1d1f;color:#fff;box-shadow:0 6px 16px #0000001f}.nav-button.is-active:after{display:none}.topbar-actions{display:flex;justify-content:flex-end;gap:12px}.icon-button{display:inline-grid;width:42px;height:42px;place-items:center;border:1px solid transparent;border-radius:999px;background:transparent;color:#424245}.icon-button:hover,.icon-button:focus-visible{border-color:var(--line);background:#f2f2f7}.workspace{width:min(1440px,100%);margin:0 auto;padding:42px 52px 54px}.access-view{max-width:560px;margin:82px auto 0;display:grid;gap:18px;padding:40px;border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.access-view h1{margin:0;font-size:clamp(30px,3vw,44px);line-height:1.08;font-weight:780}.access-view p{margin:0;color:var(--muted);font-size:16px;line-height:1.65}.access-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:end}.access-form label{display:grid;gap:8px;color:var(--muted);font-size:14px;font-weight:650}.access-form input{width:100%;min-height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--text)}.converter-view{display:flex;flex-direction:column;gap:18px}.dropzone{min-height:282px;display:grid;place-items:center;align-content:center;gap:12px;border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);background:linear-gradient(180deg,#fff,#fbfbfdf5),var(--surface);color:var(--accent);transition:border-color .18s ease,background .18s ease,box-shadow .18s ease}.dropzone.is-active{border-color:#0071e37a;background:#f5faff;box-shadow:0 0 0 5px #0071e31f}.dropzone h1{margin:10px 0 0;color:var(--text);font-size:clamp(28px,2.8vw,42px);line-height:1.12;font-weight:760;text-align:center}.dropzone p{margin:0;color:var(--muted);font-size:16px;line-height:1.5;text-align:center}.upload-control{position:relative;display:inline-flex;align-items:center;justify-content:center;margin-top:4px;color:var(--accent);font-size:15px;font-weight:700;text-decoration:underline;text-underline-offset:4px;cursor:pointer}.upload-control input{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap}.file-strip,.empty-file-strip{min-height:78px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:0 1px #00000005}.empty-file-strip{grid-template-columns:auto 1fr;color:var(--muted);font-size:15px}.file-strip strong,.result-row strong,.batch-row strong,.history-row strong{display:block;color:var(--text);font-size:16px;line-height:1.35;font-weight:680}.file-strip span,.result-row span,.batch-row span,.history-row span{color:var(--muted);font-size:14px;line-height:1.45}.file-badge{width:42px;height:42px;display:inline-grid;place-items:center;flex:0 0 auto;border-radius:6px;color:#fff;font-size:13px;font-weight:790;letter-spacing:0}.file-badge.blue{background:var(--blue)}.file-badge.green{background:var(--green)}.file-badge.orange{background:var(--orange)}.file-badge.indigo{background:var(--indigo)}.file-badge.red{background:var(--red)}.converter-grid{display:grid;grid-template-columns:minmax(0,1fr) 370px;gap:28px}.panel{border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);background:var(--surface);box-shadow:0 1px #00000005}.format-panel,.options-panel{padding:22px 20px}.panel-header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:18px}.panel-header h2{margin:0;font-size:17px;line-height:1.35;font-weight:760}.panel-header span{color:var(--subtle);font-size:13px;font-weight:560}.legal-view{display:grid;gap:20px;max-width:980px;margin:0 auto}.legal-header{display:grid;gap:12px;padding:34px 0 12px}.legal-header span{color:var(--accent);font-size:13px;font-weight:760}.legal-header h1{margin:0;color:var(--text);font-size:clamp(34px,4vw,56px);line-height:1.05;font-weight:780}.legal-header .secondary-button{justify-self:start}.legal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.legal-panel{min-height:176px;padding:22px;border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);background:var(--surface)}.legal-panel h2{margin:0 0 10px;color:var(--text);font-size:18px;line-height:1.35}.legal-panel p{margin:0;color:var(--muted);font-size:15px;line-height:1.7}.format-options{display:grid;grid-template-columns:repeat(5,minmax(124px,1fr));gap:14px}.format-card{display:flex;min-height:76px;align-items:center;gap:12px;padding:13px 16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:#1d1d1f;font-size:15px;font-weight:650;text-align:left;transition:border-color .16s ease,background .16s ease,box-shadow .16s ease,transform .16s ease}.format-card:hover,.format-card:focus-visible{border-color:var(--line-strong);transform:translateY(-1px);box-shadow:0 8px 22px #0000000f}.format-card.is-selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px #0071e317}.options-panel{display:flex;flex-direction:column}.option-row{display:flex;min-height:54px;align-items:center;justify-content:space-between;gap:16px;color:#253041}.option-row+.option-row{border-top:1px solid #edf1f5}.option-row strong{display:block;font-size:15px;line-height:1.35;font-weight:680}.option-row small{display:block;margin-top:2px;color:var(--subtle);font-size:12px}.switch{position:relative;width:50px;height:28px;flex:0 0 auto;border-radius:999px;background:#c7d1dc;transition:background .16s ease}.switch span{position:absolute;top:4px;left:4px;width:20px;height:20px;border-radius:999px;background:#fff;box-shadow:0 2px 5px #1018282e;transition:transform .16s ease}.switch.is-on{background:var(--accent)}.switch.is-on span{transform:translate(22px)}.action-panel{display:grid;grid-template-columns:150px minmax(0,1fr) 132px;align-items:center;gap:28px;padding:26px 22px}.primary-button,.secondary-button,.outline-button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-size:15px;font-weight:720;text-decoration:none}.primary-button{background:#0071e3;color:#fff;box-shadow:0 10px 22px #0071e333}.primary-button.compact{width:fit-content;padding:0 22px}.primary-button:disabled{cursor:not-allowed;background:#b8b8bd;box-shadow:none}.secondary-button{border:1px solid #d2d2d7;background:#fff;color:#1d1d1f}.secondary-button.compact{width:fit-content;padding:0 18px}.outline-button{padding:0 18px;border:1px solid var(--accent);background:#fff;color:var(--accent-dark)}.outline-button.muted{border-color:var(--line-strong);color:#344054}.progress-block{min-width:0}.progress-meta{display:flex;align-items:center;gap:16px;margin-bottom:9px}.progress-meta strong{font-size:16px;font-weight:720}.progress-meta span{color:#344054;font-size:16px;font-weight:680}.progress-track{height:8px;overflow:hidden;border-radius:999px;background:#e5ebf0}.progress-track span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#0071e3,#5ac8fa);transition:width .18s ease}.debug-log{display:flex;flex-wrap:wrap;gap:6px 14px;min-height:20px;margin-top:8px;color:var(--subtle);font-size:12px}.result-panel{padding:20px 22px}.result-header{align-items:center}.result-header>div{display:flex;align-items:center;gap:18px}.result-status{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:14px;font-weight:650}.result-status.is-ready{color:var(--accent-dark)}.result-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;padding:15px 14px;border:1px solid #e7ecf1;border-radius:var(--radius);background:#fff}.result-actions{display:flex;gap:12px}.result-empty{padding:22px;border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted);font-size:14px;text-align:center}.result-empty.is-error{border-color:#e5484d59;background:#fff7f7;color:#b42318;font-weight:650}.support-view{display:grid;grid-template-columns:minmax(280px,.78fr) minmax(420px,1.08fr);gap:42px;align-items:start;padding:68px 0}.support-copy h1{margin:0 0 12px;font-size:clamp(32px,3vw,48px);line-height:1.08;font-weight:780}.support-copy p{max-width:520px;margin:0;color:var(--muted);font-size:16px;line-height:1.75}.support-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.support-actions input{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap}.batch-workspace{display:grid;gap:16px}.merge-panel{display:grid;gap:16px;padding:22px}.merge-panel .panel-header{margin-bottom:0}.merge-progress{padding:16px 2px 4px}.compact-format-options{grid-template-columns:repeat(2,minmax(160px,1fr))}.batch-list,.history-table{border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}.batch-row,.history-row{display:grid;align-items:center;gap:14px;min-height:64px;padding:14px 18px;border-bottom:1px solid #edf1f5}.batch-row{grid-template-columns:auto 1fr auto}.history-row{grid-template-columns:minmax(0,1fr) 86px 116px 76px 100px}.batch-row:last-child,.history-row:last-child{border-bottom:0}.queue-index{width:30px;height:30px;display:grid;place-items:center;border-radius:6px;background:var(--accent-soft);color:var(--accent-dark);font-size:13px;font-weight:760}.history-status{color:var(--accent-dark)!important;font-weight:700}.history-status.is-failed,.row-error{color:#b42318!important;font-weight:700}.row-error{display:block;margin-top:2px}.compact-link{min-height:36px;padding:0 12px;font-size:13px}.statusbar{display:flex;align-items:center;gap:18px;padding:0 32px;border-top:1px solid rgba(0,0,0,.08);background:#ffffffc2;color:var(--muted);font-size:14px}.statusbar span{display:inline-flex;align-items:center;gap:8px}.statusbar span+span:before{width:4px;height:4px;border-radius:999px;background:#b7c1cc;content:""}.statusbar-right{margin-left:auto}.statusbar-links{display:inline-flex;align-items:center;gap:12px}.statusbar-links button{border:0;padding:0;background:transparent;color:var(--muted);cursor:pointer;font:inherit}.statusbar-links button:hover,.statusbar-links button:focus-visible{color:var(--text);text-decoration:underline;text-underline-offset:4px}:focus-visible{outline:3px solid rgba(0,113,227,.24);outline-offset:3px}@media(max-width:1120px){.workspace{padding:26px 24px 36px}.converter-grid{grid-template-columns:1fr}.format-options{grid-template-columns:repeat(3,minmax(150px,1fr))}.action-panel{grid-template-columns:140px minmax(0,1fr)}.action-panel .secondary-button{grid-column:1 / -1;justify-self:end;width:160px}}@media(max-width:760px){.app-shell{grid-template-rows:auto 1fr auto}.topbar{grid-template-columns:1fr auto;gap:12px;padding:14px 16px 0}.brand{font-size:21px}.nav{grid-column:1 / -1;width:100%;height:54px;overflow-x:auto}.nav-button{min-width:100px;padding:0 14px;font-size:15px}.workspace{padding:18px 14px 28px}.access-view{margin-top:28px;padding:24px 18px}.access-form{grid-template-columns:1fr}.access-form .primary-button{width:100%}.dropzone{min-height:210px;padding:24px 18px}.dropzone h1{font-size:24px}.dropzone p{font-size:14px}.file-strip,.empty-file-strip{grid-template-columns:auto 1fr;padding:14px}.file-strip .icon-button{grid-column:1 / -1;justify-self:end}.format-options{grid-template-columns:1fr}.format-card{min-height:64px}.action-panel{grid-template-columns:1fr;gap:18px;padding:18px}.action-panel .secondary-button,.primary-button{width:100%}.result-row{grid-template-columns:auto minmax(0,1fr)}.result-actions{grid-column:1 / -1;display:grid;grid-template-columns:1fr}.support-view{grid-template-columns:1fr;padding:28px 0}.legal-grid{grid-template-columns:1fr}.legal-header{padding-top:18px}.history-row{grid-template-columns:1fr;gap:6px}.statusbar{flex-wrap:wrap;gap:8px 14px;padding:12px 16px;font-size:12px}.statusbar-right{margin-left:0}.statusbar-links{width:100%}.statusbar span+span:before{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}