:root{--navy:#0d1b2a;--teal:#0fa38a;--teal-dark:#0c8a75;--teal-soft:#e6f6f2;--teal-line:#b8e4da;--white:#ffffff;--offwhite:#f7f9fa;--gray:#e8ecef;--gray-dark:#cfd6dc;--bg:var(--offwhite);--panel:var(--white);--text:var(--navy);--muted:#5b6875;--line:var(--gray);--accent:var(--teal);--accent-text:var(--white);--danger:#c0392b;--danger-soft:#fdecea;--ok:var(--teal);--radius:12px;--radius-sm:8px;--shadow:0 1px 2px rgba(13,27,42,0.04),0 8px 24px rgba(13,27,42,0.06);--font-sans:var(--font-inter),var(--font-jp),-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}a{color:var(--teal-dark);text-decoration:none}a:hover{text-decoration:underline}main{max-width:720px;margin:0 auto;padding:32px 20px 80px}main.wide{max-width:1040px}h1{font-size:24px;margin:0 0 6px;letter-spacing:-.01em}h1,h2{font-weight:700}h2{font-size:17px}h2,p{margin:0 0 12px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.muted{color:var(--muted);font-size:14px}.teal{color:var(--teal)}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.stack>*+*{margin-top:16px}.divider{border:0;border-top:1px solid var(--line);margin:40px 0 24px}.btn,button{font:inherit;font-weight:600;padding:10px 18px;border-radius:var(--radius-sm);border:1px solid var(--gray-dark);background:var(--panel);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.4;text-decoration:none;transition:background .12s,border-color .12s,color 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8px;line-height:1.4;font-size:16px;border-color:transparent;color:var(--muted)}button.icon:hover{color:var(--danger);border-color:var(--line);background:transparent}label{display:block;font-size:14px;color:var(--muted);margin-bottom:4px}input[type=email],input[type=text],select{font:inherit;padding:10px 12px;border:1px solid var(--gray-dark);border-radius:var(--radius-sm);background:var(--panel);color:var(--text);width:100%}.dropzone:focus-visible,a.btn:focus-visible,button:focus-visible,input:focus,select:focus{outline:2px solid var(--teal);outline-offset:2px}.form-row{display:grid;grid-template-columns:minmax(140px,1fr) minmax(0,1.4fr);align-items:center;grid-gap:12px;gap:12px}.form-row>label{margin:0;color:var(--text);font-weight:500}@media (max-width:480px){.form-row{grid-template-columns:1fr;gap:4px}}.check{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text);cursor:pointer;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm)}.check:has(input:checked){border-color:var(--teal);background:var(--teal-soft)}.check input{margin-top:5px;accent-color:var(--teal)}.check .muted{display:block}.fieldset{border:0;padding:0;margin:0}.fieldset legend{padding:0;margin-bottom:6px;font-size:14px;font-weight:500;color:var(--text)}.fieldset.stack>*+*{margin-top:8px}.dropzone{border:2px dashed var(--gray-dark);border-radius:var(--radius);background:var(--offwhite);padding:36px 24px;text-align:center;cursor:pointer;color:var(--muted);transition:border-color .12s,background .12s;display:flex;flex-direction:column;align-items:center;gap:6px}.dropzone.over,.dropzone:hover{border-color:var(--teal);background:var(--teal-soft)}.dropzone strong{display:block;font-size:15px;color:var(--text)}.dropzone .drop-icon{color:var(--teal);margin-bottom:4px}.secure-note{display:inline-flex;align-items:center;gap:6px;color:var(--teal-dark);font-size:13px;font-weight:500}.secure-note svg{color:var(--teal)}.progress{height:8px;background:var(--gray);border-radius:999px;overflow:hidden}.progress>div{height:100%;background:var(--teal);transition:width .15s}.url-row{display:flex;border:1.5px solid var(--teal);border-radius:var(--radius-sm);background:var(--panel);overflow:hidden}.url-row .url-box{flex:1 1;min-width:0;border:0;border-radius:0;background:var(--panel)}.url-row button{border:0;border-radius:0;background:var(--teal);color:var(--white);padding:0 16px;flex:none}.url-row button:hover{background:var(--teal-dark)}.url-box{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;word-break:break-all;background:var(--offwhite);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;line-height:1.5}.hint{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--muted)}.hint svg{flex:none;color:var(--teal);margin-top:2px}.error-body{font-size:17px}.notice{border-left:3px solid 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.teal{font-family:var(--font-inter),var(--font-sans);letter-spacing:.04em}.hero-lead{font-size:16px;color:var(--muted);margin:0 0 24px}.hero-actions{gap:12px;margin-bottom:28px}.hero-actions,.trust{display:flex;flex-wrap:wrap}.trust{gap:20px}.trust-item{display:flex;gap:10px;align-items:flex-start;min-width:150px}.trust-item svg{color:var(--teal);flex:none;margin-top:2px}.trust-item strong{display:block;font-size:14px}.trust-item span{font-size:12px;color:var(--muted);line-height:1.5}.preview{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.preview .dropzone{padding:28px 20px}.section{padding:24px 0}.section-title{text-align:center;font-size:22px;font-weight:700;margin:0 0 20px}.section-title .num{font-family:var(--font-inter),var(--font-sans);color:var(--teal);font-size:1.3em;padding:0 .15em}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px}@media 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var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}.recipient-brand{display:flex;justify-content:center;margin-bottom:20px}.file-card{display:flex;gap:14px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--offwhite)}.file-card .file-title{font-weight:600;word-break:break-all}.kv{display:grid;grid-template-columns:auto 1fr;grid-gap:6px 16px;gap:6px 16px;margin:0;font-size:14px}.kv dt{color:var(--muted)}.kv dd{margin:0}.history{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.history-row{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;display:grid;grid-template-columns:minmax(0,1fr) auto auto;grid-gap:12px 20px;gap:12px 20px;align-items:center}.history-row[data-status]:not([data-status=active]) .history-name{color:var(--muted)}.history-main{min-width:0}.history-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-meta{font-size:13px;text-align:right;line-height:1.5}.history-actions{min-width:84px;text-align:right}.history-actions button{padding:6px 12px;font-size:14px}@media (max-width:560px){.history-row{grid-template-columns:1fr auto}.history-meta{grid-column:1/-1;text-align:left}}.badge{display:inline-block;font-size:12px;font-weight:600;padding:2px 10px;border-radius:999px;border:1px solid var(--line);background:var(--offwhite);color:var(--muted);line-height:1.6}.badge.active{background:var(--teal-soft);border-color:var(--teal-line);color:var(--teal-dark)}.badge.revoked{background:var(--danger-soft);border-color:#f2c4bf;color:var(--danger)}.file-list{list-style:none;margin:0;padding:0;gap:8px}.file-list,.file-list li{display:flex;flex-direction:column}.file-list li{gap:4px}.file-list 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