:root{--bg:#eef1f5;--surface:#fcfcfd;--surface-2:#e9edf3;--fg:#14171c;--muted:#495260;--em:#16326b;--marker:#cfe3f8;--header-bg:#16326b;--border:#d9dfe8;--accent:#2f7de0;--accent-hover:#245fae;--accent-soft:#e8f1fc;--accent-fg:#fff;--a:#128048;--b:#cf3a30;--warn:#8a4b09;--accent2:#f2802a;--accent2-soft:#fdeee2;--danger-soft:#fdf0ef;--radius:12px;--shadow:0 1px 2px #1018280a, 0 6px 20px #1018280f;color-scheme:light}*,:before,:after{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--fg);margin:0;font:16px/1.8 Segoe UI,Meiryo,Hiragino Sans,Yu Gothic UI,system-ui,-apple-system,sans-serif}a{color:var(--accent)}img,video,iframe{max-width:100%}.container{width:min(1040px,100% - 32px);margin-inline:auto}.site-header{background:var(--header-bg)}.site-header .container{flex-wrap:wrap;align-items:center;gap:4px 16px;min-height:56px;display:flex}.logo{color:#fff;font-size:1.1rem;font-weight:800;text-decoration:none}.site-nav{flex-wrap:wrap;gap:4px 18px;margin-left:auto;font-size:.92rem;display:flex}.site-nav a{color:#cdd4de;text-decoration:none}.site-nav a:hover,.site-nav a[aria-current=page]{color:#fff;text-decoration:underline}main{padding-block:24px 48px}.site-footer{border-top:1px solid var(--border);background:var(--surface);color:var(--muted);padding-block:24px;font-size:.88rem}.site-footer nav{flex-wrap:wrap;gap:4px 18px;display:flex}.site-footer a{color:var(--muted)}h1{align-items:center;gap:13px;margin:0 0 12px;font-size:clamp(1.5rem,1.2rem + 1.4vw,2.05rem);font-weight:800;line-height:1.45;display:flex}h1:before{content:"";background:var(--accent2);border-radius:2px;flex:none;width:17px;height:17px;transform:rotate(18deg)}h2{margin:46px 0 14px;font-size:1.3rem;font-weight:700;line-height:1.6}main>h2,main>.prose>h2{align-items:center;gap:11px;display:flex}main>h2:before,main>.prose>h2:before{content:"";background:var(--em);border-radius:2px;flex:none;width:13px;height:13px;transform:rotate(-16deg)}h3{margin:24px 0 8px;font-size:1.05rem;font-weight:700}.lead{color:var(--muted);margin:0 0 20px}.muted{color:var(--muted);font-size:.9rem}strong{color:var(--em)}.em{color:var(--em);font-weight:700}.notice{background:var(--surface-2);color:#2b3440;border-radius:10px;padding:10px 12px;font-size:.92rem}.notice.error{background:var(--danger-soft);color:var(--b)}.notice.warn{color:var(--warn)}.prose{max-width:780px}.steps{padding-left:1.4em}.steps li{margin:6px 0}.faq details{border-bottom:1px solid var(--border);padding:10px 0}.faq summary{cursor:pointer;font-weight:600}.faq details p{color:var(--muted);margin:8px 0 0}kbd{border:1px solid var(--border);background:var(--surface-2);border-bottom-width:2px;border-radius:4px;padding:1px 5px;font:.8rem ui-monospace,SFMono-Regular,Consolas,monospace}.list-plain{margin:0;padding:0;list-style:none}.sr-only{white-space:nowrap;clip-path:inset(50%);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.btn{font:inherit;border:1px solid var(--border);background:var(--surface-2);color:var(--fg);cursor:pointer;white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:8px 14px;font-size:.92rem;line-height:1.2;text-decoration:none;display:inline-flex}.btn:hover{filter:brightness(.96)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-fg);font-weight:700}.btn-primary:hover{background:var(--accent-hover);filter:none}.btn-sm{padding:5px 9px;font-size:.84rem}input[type=text],input[type=url],select{min-width:0;font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--fg);border-radius:8px;padding:7px 10px;font-size:.95rem}.input-row{flex-wrap:wrap;gap:8px;display:flex}.input-row input{flex:1;min-width:12em}.list-bar{margin-bottom:8px}.list-bar select{flex:1;min-width:10em}.btn-fine{opacity:.85;padding:5px 7px;font-size:.78rem}.badge{border:1px solid var(--border);background:var(--surface-2);color:var(--muted);vertical-align:middle;border-radius:999px;margin-left:6px;padding:1px 8px;font-size:.72rem;font-weight:600;display:inline-block}.tool-grid{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;display:grid}.tool-card{color:inherit;text-decoration:none;display:block}a.tool-card:hover{border-color:var(--accent)}.tool-card h3{margin:0 0 4px}.tool-card p{color:var(--muted);margin:0;font-size:.9rem}.tool-card.is-soon{opacity:.6}.ad-slot{margin-block:32px}.ad-label{color:var(--muted);margin:0 0 4px;font-size:.75rem}.ad-placeholder{border:2px dashed var(--border);border-radius:var(--radius);min-height:100px;color:var(--muted);place-items:center;font-size:.85rem;display:grid}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);text-align:center;cursor:pointer;place-items:center;gap:10px;padding:44px 20px;display:grid}.drop-zone:hover,.drop-zone.is-over{border-color:var(--accent);background:var(--accent-soft)}.drop-zone strong{font-size:1.05rem}.info{grid-template-columns:auto 1fr;gap:6px 18px;margin:0 0 16px;display:grid}.info dt{color:var(--muted);font-size:.9rem}.info dd{margin:0;font-weight:600}.actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;display:flex}audio{width:100%;margin-top:8px}.progress{background:var(--surface-2);border-radius:999px;height:8px;margin-top:12px;overflow:hidden}.progress span{background:var(--accent);width:0;height:100%;transition:width .2s;display:block}.points{gap:8px;margin:0 0 16px;padding:0;list-style:none;display:grid}.points li{padding-left:26px;position:relative}.points li:before{content:"✓";color:var(--a);font-weight:700;position:absolute;left:2px}.logo{align-items:baseline;gap:7px;display:inline-flex}.logo-mark{align-self:center;width:24px;height:24px;margin-right:2px}.logo-brand{font-weight:800}.logo-sep{color:#8a93a0;font-weight:400}.logo-tool{color:#cdd4de;font-size:.95rem;font-weight:500}.tools-menu{position:relative}.tools-menu summary{cursor:pointer;color:#cdd4de;list-style:none}.tools-menu summary::-webkit-details-marker{display:none}.tools-menu summary:after{content:" ▾"}.tools-menu summary:hover,.tools-menu[open] summary{color:#fff}.tools-panel{z-index:20;background:var(--surface);border:1px solid var(--border);width:max-content;max-width:min(94vw,46em);max-height:72vh;box-shadow:var(--shadow);text-align:left;border-radius:10px;grid-template-columns:repeat(auto-fit,minmax(9em,1fr));gap:4px 18px;margin:6px 0 0;padding:12px 14px;display:grid;position:absolute;right:0;overflow-y:auto}.tools-panel h2{letter-spacing:.08em;color:var(--muted);border-bottom:1px solid var(--border);margin:6px 0 4px;padding-bottom:4px;font-size:.74rem;font-weight:600}.tools-panel ul{margin:0;padding:0;list-style:none}.tools-panel li a{color:var(--fg);border-radius:7px;padding:7px 10px;font-size:.92rem;text-decoration:none;display:block}.tools-panel li a:hover{background:var(--accent-soft);color:var(--em)}@media (width<=600px){.tools-panel{width:auto;max-width:none;max-height:calc(100dvh - 76px);position:fixed;top:60px;left:8px;right:8px}}@media (width<=560px){.logo-tool,.logo-sep{display:none}}.out-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:8px;display:grid}.out-grid label{color:var(--muted);gap:4px;font-size:.85rem;display:grid}.out-grid select{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--fg);border-radius:8px;padding:7px 10px}.wave-wrap{border:1px solid var(--border);background:var(--surface-2);touch-action:none;border-radius:8px;margin-top:14px;position:relative;overflow:hidden}.wave-wrap canvas{width:100%;height:120px;display:block}.wave-mask{background:color-mix(in srgb, var(--surface) 72%, transparent);pointer-events:none;position:absolute;top:0;bottom:0}.wave-handle{cursor:ew-resize;background:0 0;border:0;width:13px;margin-left:-6px;padding:0;position:absolute;top:0;bottom:0}.wave-handle:before{content:"";background:var(--a);width:3px;position:absolute;top:0;bottom:0;left:5px}.wave-handle.is-end:before{background:var(--b)}.wave-handle:focus-visible:before{outline:2px solid var(--accent);outline-offset:2px}.wave-head{background:var(--fg);pointer-events:none;width:2px;position:absolute;top:0;bottom:0}.trim-fields{flex-wrap:wrap;align-items:end;gap:12px 18px;margin-top:14px;display:flex}.trim-fields label{color:var(--muted);gap:4px;font-size:.85rem;display:grid}.trim-fields input[type=text]{width:8em;font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--fg);font-variant-numeric:tabular-nums;border-radius:8px;padding:6px 8px}.tools-panel li .is-current{color:var(--muted);background:var(--surface-2);cursor:default;border-radius:7px;padding:7px 10px;font-size:.92rem;display:block}.tools-panel li .is-current:after{content:" ●";color:var(--accent);vertical-align:middle;font-size:.7em}.join-list{counter-reset:join;margin:12px 0 0;padding:0;list-style:none}.join-list li{border:1px solid var(--border);background:var(--surface);border-radius:8px;align-items:center;gap:10px;padding:8px 10px;display:flex}.join-list li+li{margin-top:6px}.join-list li:before{counter-increment:join;content:counter(join);background:var(--surface-2);width:1.8em;height:1.8em;color:var(--muted);font-variant-numeric:tabular-nums;border-radius:50%;flex:none;place-items:center;font-size:.8rem;display:grid}.join-name{text-overflow:ellipsis;white-space:nowrap;flex:auto;min-width:0;overflow:hidden}.join-meta{flex:none;font-size:.82rem}.join-buttons{flex:none;gap:4px;display:flex}.join-buttons .btn{min-width:2.2em;padding:4px 9px}.check{align-items:center;gap:8px;margin-top:12px;font-size:.92rem;display:flex}@media (width<=560px){.join-list li{flex-wrap:wrap}.join-name{flex-basis:100%;order:1}.join-list li:before{order:0}.join-meta{order:2;margin-left:auto}.join-buttons{order:3}}.related{border-top:1px solid var(--border);margin-top:40px;padding-top:22px}.related h2{margin:0 0 12px;font-size:1rem}.related ul{grid-template-columns:repeat(auto-fit,minmax(15em,1fr));gap:10px;margin:0;padding:0;list-style:none;display:grid}.related li a{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);height:100%;color:var(--fg);flex-direction:column;gap:3px;padding:12px 14px;text-decoration:none;display:flex}.related li a:hover{border-color:var(--accent)}.related li strong{color:var(--em);font-size:.98rem}.related li span{color:var(--muted);font-size:.86rem;line-height:1.6}.notice:empty,.muted:empty{display:none}