:root{color-scheme:light dark;--bg: #f4f6fb;--fg: #1b1f27;--card: #ffffff;--border: #e2e6ee;--border-strong: #cfd5e2;--muted: #626b7a;--accent: #3b4ee0;--accent-fg: #ffffff;--accent-weak: #eef0fe;--ok: #0f7b3f;--ok-weak: #e6f5ec;--warn: #9a5b00;--warn-weak: #fdf1dd;--err: #b3261e;--err-weak: #fbe9e8;--shadow: 0 1px 2px rgba(20, 25, 40, .06), 0 8px 24px rgba(20, 25, 40, .06);--radius: 12px}@media(prefers-color-scheme:dark){:root{--bg: #10131a;--fg: #e7eaf0;--card: #191d26;--border: #2a303c;--border-strong: #3a4150;--muted: #9aa3b2;--accent: #8b96ff;--accent-fg: #10131a;--accent-weak: #22283a;--ok: #5ed88f;--ok-weak: #17281f;--warn: #e6b866;--warn-weak: #2a2415;--err: #ff8a80;--err-weak: #2c1a1a;--shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;min-height:100vh}.appbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:20px;padding:0 20px;height:60px;background:color-mix(in srgb,var(--card) 88%,transparent);-webkit-backdrop-filter:saturate(1.2) blur(8px);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:1.05rem;letter-spacing:.02em;color:var(--fg);text-decoration:none;white-space:nowrap}.brand-sub{color:var(--accent);font-weight:600}.nav{display:flex;gap:4px;margin-left:8px;overflow-x:auto}.nav a{padding:6px 12px;border-radius:8px;color:var(--muted);text-decoration:none;font-size:.92rem;white-space:nowrap}.nav a:hover{background:var(--accent-weak);color:var(--fg)}.nav a.active{background:var(--accent-weak);color:var(--accent);font-weight:600}.appbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}.content{flex:1;width:100%;max-width:860px;margin:0 auto;padding:28px 16px 64px}.foot{padding:20px 16px;text-align:center;border-top:1px solid var(--border)}.stack>*+*{margin-top:16px}.center-narrow{max-width:480px;margin:0 auto}.center{text-align:center}.muted{color:var(--muted);font-size:.9rem}.ok{color:var(--ok)}.error{color:var(--err)}.fineprint{font-size:.82rem}.page-title{margin:0 0 4px;font-size:1.4rem}.section-title{margin:0 0 12px;font-size:1.05rem}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-size:.92rem;padding:9px 16px;border-radius:9px;border:1px solid transparent;cursor:pointer;text-decoration:none;color:var(--accent-fg);background:var(--accent);transition:filter .15s ease,background .15s ease}button:hover,.btn:hover{filter:brightness(1.05)}button:disabled,.btn:disabled{opacity:.5;cursor:not-allowed;filter:none}.primary{color:var(--accent-fg);background:var(--accent)}.ghost{color:var(--fg);background:transparent;border-color:var(--border-strong)}.ghost:hover{background:var(--accent-weak);filter:none}.small{padding:6px 12px;font-size:.85rem}.block{width:100%}.link{color:var(--accent);background:none;border:none;padding:4px 2px;font-size:.9rem;text-decoration:underline;cursor:pointer}.link:hover{filter:none;opacity:.8}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.actions.center{justify-content:center}label{display:block;margin-bottom:14px;font-size:.88rem;color:var(--muted)}input{display:block;width:100%;margin-top:6px;padding:10px 12px;font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--border-strong);border-radius:9px}input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px 16px}.auth-card{width:100%;max-width:400px}.auth-title{margin:0 0 2px;font-size:1.5rem}.auth-lead{margin:0 0 20px}.auth-links{display:flex;flex-direction:column;gap:4px;margin-top:14px;align-items:flex-start}.banner{display:flex;align-items:center;gap:16px;padding:14px 16px;border-radius:var(--radius);border:1px solid var(--border)}.banner>div:first-child{flex:1}.banner button,.banner .btn{flex-shrink:0}.banner-warn{background:var(--warn-weak);border-color:color-mix(in srgb,var(--warn) 30%,transparent)}.banner-warn strong{color:var(--warn)}.banner-info{background:var(--accent-weak);border-color:color-mix(in srgb,var(--accent) 24%,transparent)}.plan-chip{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.8rem;font-weight:600;color:var(--accent);background:var(--accent-weak);border:1px solid color-mix(in srgb,var(--accent) 26%,transparent);white-space:nowrap}.status-row{display:flex;flex-wrap:wrap;gap:12px;margin:16px 0 4px}.status-box{flex:1 1 160px;display:flex;flex-direction:column;gap:4px;padding:14px 16px;border:1px solid var(--border);border-radius:10px;background:var(--bg)}.status-label{font-size:.82rem;color:var(--muted)}.status-value{font-size:1.15rem;font-weight:700}.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.plan-card{display:flex;flex-direction:column;gap:14px;padding:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.plan-current{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),var(--shadow)}.plan-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.plan-head h2{margin:0;font-size:1.2rem}.feature-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.feature-list li{display:flex;justify-content:space-between;gap:12px;font-size:.9rem;padding-bottom:8px;border-bottom:1px dashed var(--border)}.feature-list li:last-child{border-bottom:none;padding-bottom:0}.feature-panel{margin-top:16px;padding:14px 16px;border:1px solid var(--border);border-radius:10px;background:var(--bg)}.feature-panel .feature-list{margin-top:10px}.kv-list{margin:0;display:flex;flex-direction:column;gap:10px}.kv-list>div{display:flex;gap:16px}.kv-list dt{width:34%;min-width:110px;color:var(--muted);font-size:.9rem}.kv-list dd{margin:0;flex:1;word-break:break-all}.fullpage{min-height:60vh;display:grid;place-content:center;justify-items:center;gap:14px}.spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--border-strong);border-top-color:var(--accent);animation:spin .8s linear infinite;margin:0 auto}@keyframes spin{to{transform:rotate(360deg)}}.success-mark{width:56px;height:56px;margin:0 auto 8px;display:grid;place-items:center;font-size:1.7rem;color:var(--accent-fg);background:var(--ok);border-radius:50%}@media(max-width:560px){.appbar{gap:10px;padding:0 12px}.brand{font-size:.98rem}.nav a{padding:6px 8px}}.plan-price{font-size:1.05rem}.plan-price strong{font-size:1.5rem;font-variant-numeric:tabular-nums}