:root{color-scheme:light;--bg:#f7f8ff;--surface:rgba(255,255,255,.78);--ink:#17203b;--muted:#76809a;--line:rgba(75,91,145,.14);--blue:#5c7cff;--blue-deep:#4564e8;--pink:#f47fbb;--success:#168862;--danger:#c43d64;--shadow:0 28px 70px rgba(56,68,126,.13)}
*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--ink);background:var(--bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}a{color:inherit;text-decoration:none}button{color:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}[hidden]{display:none!important}a:focus-visible,button:focus-visible,.dropzone:focus-within{outline:3px solid var(--blue);outline-offset:5px}
.ambient{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:-1;background:radial-gradient(ellipse at 0 0,rgba(112,140,255,.17),transparent 45%),radial-gradient(ellipse at 100% 35%,rgba(255,145,201,.14),transparent 45%)}.ambient:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(92,124,255,.11) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,#000,transparent 68%)}
.shell{width:min(1180px,calc(100% - 36px));margin:0 auto;padding:28px 0 64px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 2px 44px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:760;letter-spacing:-.02em}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--pink));box-shadow:0 10px 24px rgba(92,124,255,.25)}.brand-mark svg{width:21px}.brand small{display:block;color:var(--muted);font-size:10px;font-weight:650;letter-spacing:.18em;margin-top:1px}.back-link{color:var(--muted);font-size:13px;padding:8px 0}.back-link:hover{color:var(--blue-deep)}.hero{text-align:center;max-width:780px;margin:20px auto 42px}h1{margin:22px 0 16px;font-size:clamp(36px,6vw,68px);line-height:1.12;letter-spacing:-.055em}h1 span{color:transparent;background:linear-gradient(100deg,var(--blue-deep),#7b75ed 48%,var(--pink));background-clip:text;-webkit-background-clip:text}.hero p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}.workspace{padding:clamp(18px,3vw,30px);border:1px solid rgba(255,255,255,.8);border-radius:30px;background:var(--surface);box-shadow:var(--shadow);backdrop-filter:blur(22px)}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:20px}.tool-card{display:flex;align-items:center;gap:20px;min-height:156px;padding:28px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.76);transition:transform .2s,border-color .2s,box-shadow .2s}.tool-card:hover{transform:translateY(-3px);border-color:rgba(92,124,255,.38);box-shadow:0 12px 28px rgba(92,124,255,.09)}.tool-icon{flex:none;width:54px;height:54px;display:grid;place-items:center;border-radius:17px;background:#edf1ff;color:var(--blue)}.tool-card:nth-child(2) .tool-icon{background:#fff0f7;color:#cb69a0}.tool-icon svg{width:27px}.tool-text{flex:1;min-width:0}.tool-card h2{font-size:20px;margin:0 0 9px;letter-spacing:-.03em}.tool-card p{font-size:12px;color:var(--muted);line-height:1.7;margin:0}.tool-arrow{color:var(--muted);font-size:22px}.footnote{margin:22px 2px 0;color:var(--muted);font-size:12px;line-height:1.8}.footnote a{text-decoration:underline;text-underline-offset:3px}
.dropzone{position:relative;min-height:250px;display:grid;place-items:center;padding:36px 20px;text-align:center;border:1.5px dashed rgba(92,124,255,.33);border-radius:24px;background:linear-gradient(145deg,rgba(244,247,255,.88),rgba(255,246,251,.72));cursor:pointer;transition:border-color .2s,box-shadow .2s}.dropzone:hover,.dropzone.dragging{border-color:var(--blue);box-shadow:0 16px 40px rgba(92,124,255,.1)}.upload-icon{width:64px;height:64px;display:grid;place-items:center;margin:0 auto 18px;border-radius:20px;color:#fff;background:linear-gradient(145deg,var(--blue),#8199ff 54%,var(--pink));box-shadow:0 14px 30px rgba(92,124,255,.24)}.upload-icon svg{width:29px}.dropzone h2{margin:0 0 9px;font-size:clamp(19px,3vw,24px);letter-spacing:-.025em}.dropzone p{margin:0 0 20px;color:var(--muted);font-size:13px;line-height:1.7}.file-input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.select-btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border:0;border-radius:12px;color:#fff;background:var(--ink);font-weight:700;font-size:14px}.error{margin:16px 0 0;padding:13px 15px;border-radius:13px;color:var(--danger);background:rgba(216,78,116,.08);font-size:14px;line-height:1.6;white-space:pre-line}.queue-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:26px 0 14px}.queue-toolbar h2{font-size:17px;margin:0}.queue-toolbar p{font-size:12px;color:var(--muted);margin:6px 0 0}.secondary-btn,.download-btn{display:inline-flex;justify-content:center;align-items:center;padding:9px 13px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--muted);font-size:13px;white-space:nowrap}.secondary-btn:hover{color:var(--blue);border-color:rgba(92,124,255,.35)}.download-btn{background:var(--ink);color:#fff;border-color:transparent}.download-btn:hover{background:var(--blue-deep)}.file-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.file-row{display:flex;align-items:center;gap:16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.72);padding:18px}.file-info{flex:1;min-width:0}.file-name{font-size:14px;font-weight:700;overflow-wrap:anywhere;margin:0 0 7px}.file-detail{color:var(--muted);font-size:12px;line-height:1.6;margin:0}.file-state{margin-left:12px}.file-row[data-status=done] .file-state{color:var(--success)}.file-row[data-status=error] .file-state{color:var(--danger)}.file-actions{display:flex;gap:8px;flex-shrink:0}.file-progress{width:100%;height:4px;display:block;margin-top:10px;accent-color:var(--blue);border:0;border-radius:4px}.file-progress::-webkit-progress-bar{background:#edf1ff;border-radius:4px}.file-progress::-webkit-progress-value{background:var(--blue);border-radius:4px}
@media(max-width:700px){.shell{width:calc(100% - 22px);padding-top:18px}.topbar{padding-bottom:30px}.hero{margin-top:8px;margin-bottom:30px}.workspace{padding:13px;border-radius:24px}.tool-grid{gap:12px}.tool-card{padding:22px 18px;gap:14px;min-height:136px}.tool-card h2{font-size:18px}.tool-icon{width:46px;height:46px;border-radius:14px}.dropzone{min-height:240px}.file-row{flex-wrap:wrap;padding:15px;gap:12px}.file-info{flex-basis:100%}.file-actions{width:100%;justify-content:flex-end}.queue-toolbar{align-items:flex-start}.footnote{margin:18px 2px 0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}