:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#182335;background:#f3f6f8;line-height:1.5}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(160deg,#f7fafb,#edf3f5)}
button,input{font:inherit}.hidden{display:none!important}.topbar{display:flex;justify-content:space-between;align-items:center;padding:22px clamp(18px,4vw,48px);background:#17324d;color:#fff;box-shadow:0 8px 25px #17324d2b}.topbar h1{margin:0;font-size:clamp(26px,4vw,40px)}.eyebrow{margin:0 0 2px;font-size:12px;letter-spacing:.18em;font-weight:800;color:#6a889d}.topbar .eyebrow{color:#bcd0dc}
.shell{max-width:980px;margin:0 auto;padding:24px 16px 60px}.card{background:#fff;border:1px solid #dbe4e9;border-radius:20px;padding:clamp(18px,4vw,30px);margin-bottom:20px;box-shadow:0 12px 35px #17324d0d}.login-card{max-width:540px;margin:60px auto}.card h2{margin:0;font-size:clamp(22px,3vw,30px)}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.badge{background:#eaf2f5;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800;color:#355a70}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}label,legend{font-weight:750}input[type=text],input:not([type]){width:100%;margin-top:6px;border:1px solid #b8c8d2;border-radius:11px;padding:12px;background:#fff}input:focus{outline:3px solid #9cc9df66;border-color:#4e91b4}fieldset{border:1px solid #d4e0e6;border-radius:12px;margin:18px 0;padding:14px}.choice{display:block;font-weight:600;margin:7px 0}.drop-zone{display:flex;align-items:center;gap:14px;border:2px dashed #8ba7b7;background:#f7fafb;border-radius:15px;padding:20px;cursor:pointer;transition:.18s ease}.drop-zone:hover,.drop-zone:focus-visible,.drop-zone.dragover{border-color:#176a8d;background:#edf7fa;outline:none;box-shadow:0 0 0 4px #76b5d326}.drop-icon{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;border-radius:50%;background:#e4f0f4;color:#176a8d;font-size:28px;font-weight:500}.drop-zone strong{display:block}.drop-sub,.file-summary{display:block;font-size:13px;color:#637585;margin-top:2px}.file-summary.selected{color:#176b4b;font-weight:750}.file-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.button{border:0;border-radius:10px;padding:11px 16px;font-weight:800;cursor:pointer}.button:disabled{opacity:.55;cursor:wait}.primary{background:#176a8d;color:#fff}.secondary{background:#e8f1f4;color:#17324d}.ghost{background:transparent;border:1px solid currentColor;color:inherit}.danger{background:#fff0f0;color:#a32b2b}.message{min-height:1.4em;margin:14px 0 0;white-space:pre-wrap}.message.error{color:#a32b2b}.message.success{color:#176b4b}
.progress-wrap{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;margin-top:14px}progress{width:100%;height:14px}.site-list{display:grid;gap:14px}.site-card{border:1px solid #dbe4e9;border-radius:16px;padding:14px}.site-card.deleted{background:#faf7f7;opacity:.8}.site-card-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:16px;align-items:start}.site-thumb{position:relative;display:block;width:100%;aspect-ratio:16/10;overflow:hidden;border:1px solid #cfdce3;border-radius:11px;background:linear-gradient(135deg,#edf3f6,#fff);box-shadow:0 6px 18px #17324d12}.site-thumb-frame{position:absolute;inset:0;width:400%;height:400%;border:0;transform:scale(.25);transform-origin:top left;pointer-events:none;background:#fff}.site-thumb::after{content:"開く";position:absolute;right:8px;bottom:8px;padding:4px 8px;border-radius:999px;background:#17324dcc;color:#fff;font-size:11px;font-weight:800;opacity:0;transition:.15s}.site-thumb:hover::after,.site-thumb:focus-visible::after{opacity:1}.site-thumb-placeholder{display:grid;place-items:center;width:100%;aspect-ratio:16/10;border:1px dashed #c8d2d8;border-radius:11px;color:#7c8d98;background:#f5f6f7;font-weight:750}.site-row{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.site-card h3{margin:0 0 4px}.meta{font-size:13px;color:#637585}.url{font-size:13px;word-break:break-all;color:#176a8d}.site-actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.small-button{border:0;border-radius:8px;padding:8px 10px;font-weight:750;cursor:pointer;background:#edf3f5;color:#1e4056}.small-button.danger{background:#fff0f0;color:#a32b2b}
.dialog{border:0;border-radius:18px;padding:0;box-shadow:0 22px 70px #13283b55;max-width:min(720px,94vw);width:100%}.dialog::backdrop{background:#15283b99}.dialog.wide{max-width:96vw;width:1100px;height:92vh}.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:15px 18px;border-bottom:1px solid #dbe4e9}.dialog-head h2{margin:0}.icon-button{border:0;background:transparent;font-size:28px;cursor:pointer}.dialog iframe{width:100%;height:calc(92vh - 64px);border:0}.history-item{padding:14px 18px;border-bottom:1px solid #e2e8ec}.history-item.current{background:#eef7f2}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}.site-card-grid{grid-template-columns:1fr}.site-thumb{max-width:none}.site-row{display:block}.topbar{padding:18px}.shell{padding:16px 12px 40px}.card{border-radius:15px}.button{flex:1}.site-actions .small-button{flex:1}.drop-zone{align-items:flex-start}}