:root{--bg:#f7faff;--ink:#19243a;--blue:#2265df;--border:#dae4f3;--muted:#5a6c89}*{box-sizing:border-box}html{color:var(--ink);background:var(--bg);font-family:Arial,Helvetica,sans-serif}body{margin:0}button,select,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.shell{background:radial-gradient(circle at 70% 0,#e9f2ff 0%,#f8fbff 42%,#f7faff 100%);min-height:100vh;display:flex;flex-direction:column}header{height:80px;padding:0 clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #e4ebf5}.brand{display:flex;align-items:center;gap:10px;color:#172238;text-decoration:none;font-size:1.13rem;font-weight:750;letter-spacing:-.04em}.brand-mark{display:grid;place-items:center;width:33px;height:33px;color:#2468e7;border:1px solid #c6dcff;border-radius:11px;font-size:26px;line-height:1}.head-actions{display:flex;align-items:center;gap:18px;color:#53698a}.lock{font-size:15px}.head-actions 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24px;display:flex;flex-direction:column;align-items:flex-start;gap:12px;text-align:left;color:#1b2639;background:#fff;border:1px solid #e1e9f5;border-radius:20px;transition:transform .18s,box-shadow .18s;box-shadow:0 10px 30px #3d6da009}.tool-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px #3d6da020}.tool-card strong{font-size:1.25rem;letter-spacing:-.03em}.tool-card>span:not(.circle){min-height:46px;color:#5d6e8b;line-height:1.45}.arrow{margin-left:auto;color:#2b68df;font-size:1.6rem}.circle{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;font-size:2rem;font-weight:700;line-height:1}.blue{color:#2468e7;background:#eaf2ff}.green{color:#1fa768;background:#e4f7ef}.purple{color:#854de9;background:#f1eaff}.back{display:flex;align-items:center;gap:8px;margin:5px 0 28px;color:#5b7294;background:transparent;border:0}.workspace{max-width:720px;margin:auto}.workspace>h1{margin:0 0 8px;font-size:2rem;letter-spacing:-.04em}.intro{margin:0 0 26px;color:#5a6d89;line-height:1.5}.dropzone{min-height:225px;padding:25px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#2468df;background:#ffffffd9;border:2px dashed #c9d9ef;border-radius:16px}.dropzone.drag{background:#edf5ff;border-color:#2265df}.dropzone p{margin:11px 0 4px;color:#455b7b}.dropzone small{color:#788ba4}.primary,.secondary{min-height:46px;padding:13px 19px;display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:9px;font-weight:700}.primary{color:#fff;background:#2167e3;border:1px solid #1c5dd3;box-shadow:0 5px 12px #286be229}.secondary{color:#2456a5;background:#fff;border:1px solid #cbdbf0}.dropzone .secondary{margin-top:16px}.workspace>.primary,.panel>.primary{width:100%;margin-top:17px}.full{width:100%}.divider{display:flex;align-items:center;gap:14px;margin:20px 0;color:#7b8ca5;text-align:center}.divider:before,.divider:after{content:"";height:1px;flex:1;background:#dfe8f3}.panel{padding:24px;background:#fff;border:1px solid #e1e9f5;border-radius:18px;box-shadow:0 14px 32px #426baa0b}.qr-panel{text-align:center}.qr-panel h2{margin:0 0 6px;font-size:1.4rem}.qr-panel p{margin:0 0 20px;color:#5b6e89}.qr{display:inline-grid;grid-template-columns:repeat(13,7px);grid-template-rows:repeat(13,7px);gap:1px;padding:16px;background:#fff;border:1px solid #e3eaf5;border-radius:13px}.qr i{width:7px;height:7px;background:#fff}.qr i.on{background:#172238}.qr-panel small,.hint{display:block;margin:12px 0;color:#687b98}.password-field{display:flex;flex-direction:column;gap:7px;margin-top:18px;color:#394e6e;font-size:.9rem;font-weight:700}.password-field input{width:100%;min-height:46px;padding:10px 13px;color:#18243c;background:#fff;border:1px solid #c9d9ef;border-radius:9px}.password-field small{color:#687b98;font-weight:400;line-height:1.4}.file-list{margin-top:14px;background:#fff;border:1px solid #e1e9f5;border-radius:12px;overflow:hidden}.file-row{min-height:62px;padding:13px 15px;display:flex;align-items:center;gap:13px;border-bottom:1px solid #e7edf7}.file-row:last-child{border:0}.file-info{display:flex;flex:1;min-width:0;flex-direction:column;gap:3px}.file-info strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.92rem}.file-info small{color:#687b96;font-size:.78rem}.notice{margin-top:18px;padding:12px 14px;color:#1e4c92;background:#eef5ff;border:1px solid #c8dcfa;border-radius:10px}footer{min-height:70px;padding:18px clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;gap:20px;color:#fff;background:#1c263a;font-size:.8rem}footer strong{font-size:1.05rem}footer span:nth-child(2){letter-spacing:.2em}footer span:last-child{color:#ff6392;font-size:1.4rem}@media(max-width:700px){header{height:66px}.content{padding-top:25px}.hero{grid-template-columns:1fr;min-height:0;padding:20px 4px 32px}.hero h1{font-size:2.7rem}.hero-art{display:none}.cards{grid-template-columns:1fr;gap:12px}.tool-card{display:grid;grid-template-columns:60px 1fr 24px;align-items:center;gap:5px 16px;min-height:135px;padding:18px}.tool-card .circle{grid-row:span 2}.tool-card>span:not(.circle){grid-area:2/2;min-height:0}.tool-card .arrow{grid-area:1/3/span 2}.workspace{width:100%}footer span:nth-child(2){display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}