:root{--color-bg:#f6f8fb;--color-surface:#fff;--color-surface-2:#eef2f7;--color-text:#18212e;--color-text-muted:#5b6878;--color-border:#dde3eb;--color-primary:#1f4e8c;--color-primary-hover:#183f72;--color-primary-contrast:#fff;--color-primary-soft:#e8eef7;--color-accent:#8f6a1e;--color-success:#17784a;--color-success-soft:#e3f3ea;--color-warning:#9a5b00;--color-warning-soft:#fdf1dc;--color-danger:#b42318;--color-danger-soft:#fdeceb;--color-focus:#3b82f6;--band-from:#14325c;--band-to:#1c4479;--band-text:#fff;--band-text-muted:#c9d6e8;--band-line:#ffffff4d;--band-check:#7fd1a6;--font-sans:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "BIZ UDPGothic", Meiryo, system-ui, sans-serif;--font-mono:ui-monospace, "SFMono-Regular", Consolas, "BIZ UDGothic", monospace;--radius-sm:6px;--radius:8px;--radius-lg:10px;--radius-xl:12px;--shadow:0 1px 2px #1018280d;--shadow-float:0 20px 50px #05142d59;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--content-width:1120px;--gutter:16px}@media (prefers-color-scheme:dark){:root{--color-bg:#0f141b;--color-surface:#171e28;--color-surface-2:#1f2834;--color-text:#e6ebf2;--color-text-muted:#9aa7b8;--color-border:#2c3747;--color-primary:#6ea2e6;--color-primary-hover:#8db7ee;--color-primary-contrast:#0d1724;--color-primary-soft:#1c2c43;--color-accent:#e0b25a;--band-from:#0d1a2e;--band-to:#142a4a;--band-text-muted:#aebbd0;--shadow-float:0 20px 50px #00000080;--color-success:#5fcf8d;--color-success-soft:#15301f;--color-warning:#f2b552;--color-warning-soft:#33280f;--color-danger:#f08a80;--color-danger-soft:#3a1a17;--shadow:0 1px 2px 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var(--color-border);min-height:42px}}.layout{width:100%;max-width:var(--content-width);padding:var(--space-5) var(--gutter) var(--space-7);gap:var(--space-5);flex:1;grid-template-columns:minmax(0,1fr) 300px;align-items:start;margin:0 auto;display:grid}.layout--wide{grid-template-columns:minmax(0,1fr)}.content>*+*{margin-top:var(--space-5)}.sidebar{top:var(--space-4);gap:var(--space-4);display:grid;position:sticky}@media (max-width:960px){.layout{grid-template-columns:minmax(0,1fr)}.sidebar{position:static}.sidebar .ad-slot--sidebar{display:none!important}}.sidebar-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-4)}.sidebar-card h2{margin-bottom:var(--space-2);font-size:.95rem}.sidebar-links{margin:0;padding:0;list-style:none}.sidebar-links li+li{border-top:1px solid var(--color-border)}.sidebar-links a{padding:var(--space-2) 0;color:var(--color-text);font-size:.88rem;line-height:1.6;text-decoration:none;display:block}.sidebar-links a:hover{color:var(--color-primary)}.sidebar-links span{color:var(--color-accent);font-size:.75rem;font-weight:700;display:block}.site-footer{background:var(--color-surface);border-top:1px solid var(--color-border);color:var(--color-text-muted);font-size:.84rem}.site-footer__inner{max-width:var(--content-width);padding:var(--space-5) var(--gutter) var(--space-6);justify-content:space-between;gap:var(--space-2) var(--space-5);flex-wrap:wrap;margin:0 auto;display:flex}.site-footer a{color:inherit;text-decoration:none}.site-footer a:hover{color:var(--color-primary);text-decoration:underline}.footer-nav{gap:var(--space-2) var(--space-5);flex-wrap:wrap;display:flex}.footer-note{flex-basis:100%;order:3;margin:0;font-size:.78rem}.footer-copy{margin:0}.ad-slot:empty{display:none}.ad-slot--header{width:100%;max-width:var(--content-width);margin:var(--space-4) auto 0;padding:0 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h1{font-size:1.45rem}}.privacy-pill{align-items:center;gap:var(--space-2);padding:3px var(--space-3);border:1px solid var(--band-line);color:#d9e4f3;border-radius:999px;margin:0;font-size:.8rem;line-height:1.6;display:inline-flex}.privacy-pill svg{color:#f2c46d;flex:none}.page-head p{color:var(--color-text-muted);margin:0}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:var(--shadow)}@media (max-width:600px){.card{padding:var(--space-4)}}.card>h2:first-child,.section-title{margin:0 0 var(--space-4);padding-bottom:var(--space-3);border-bottom:1px solid var(--color-border)}.card>h2:first-child,.section-title h2{font-size:1.05rem;line-height:1.5}.section-title{justify-content:space-between;align-items:center;gap:var(--space-2) var(--space-3);flex-wrap:wrap;display:flex}.section-title h2{margin:0}.section-title 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dd{color:var(--color-danger)}.stat--ok{background:var(--color-success-soft)}.stat--ok dd{color:var(--color-success)}.meter{background:var(--color-surface-2);border-radius:999px;height:10px;overflow:hidden}.meter>div{background:var(--color-primary);border-radius:inherit;width:0;height:100%;transition:width .2s}.meter.is-over>div{background:var(--color-danger)}.progress{gap:var(--space-2);display:grid}.progress-bar{background:var(--color-surface-2);border-radius:999px;height:12px;overflow:hidden}.progress-bar>div{background:var(--color-primary);width:0;height:100%;transition:width .2s}.progress-text{color:var(--color-text-muted);font-variant-numeric:tabular-nums;justify-content:space-between;font-size:.88rem;display:flex}.alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius);background:var(--color-surface-2);font-size:.92rem}.alert--error{background:var(--color-danger-soft);color:var(--color-danger)}.alert--warning{background:var(--color-warning-soft);color:var(--color-warning)}.alert--success{background:var(--color-success-soft);color:var(--color-success)}.alert p:last-child{margin:0}.dropzone{place-items:center;gap:var(--space-1);padding:var(--space-6) var(--space-4);border-radius:var(--radius-lg);background:var(--color-primary-soft);color:var(--color-text);text-align:center;cursor:pointer;border:2px dashed #b9c6d8;transition:border-color .15s,background .15s;display:grid;position:relative}.dropzone:hover,.dropzone.is-dragover{border-color:var(--color-primary)}.dropzone.is-dragover{background:#dce6f3}.dropzone input[type=file]{opacity:0;cursor:pointer;position:absolute;inset:0}.dropzone:focus-within{outline:3px solid var(--color-focus);outline-offset:2px}.dropzone svg{color:var(--color-primary)}.dropzone 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summary{margin-bottom:var(--space-4)}.stack>*+*{margin-top:var(--space-4)}.stack>.section-title+*,.stack>h2:first-child+*{margin-top:0}.home-hero{background:linear-gradient(160deg, var(--band-from) 0%, var(--band-to) 100%);color:var(--band-text)}.home-hero__inner{max-width:var(--content-width);padding:56px var(--gutter) 64px;gap:var(--space-7);grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:center;margin:0 auto;display:grid}.home-hero h1{margin:var(--space-4) 0 var(--space-3);letter-spacing:.02em;font-size:2.25rem;line-height:1.4}.home-hero p{color:var(--band-text-muted);margin:0 0 var(--space-5)}.check-list{gap:var(--space-2);color:#e7eef8;margin:0;padding:0;font-size:.88rem;list-style:none;display:grid}.check-list li{gap:var(--space-2);display:flex}.check-list li:before{content:"✓";color:var(--band-check);font-weight:700}.drop-card{background:var(--color-surface);color:var(--color-text);border-radius:var(--radius-xl);padding:var(--space-5);box-shadow:var(--shadow-float)}.drop-card__head{justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:14px;display:flex}.drop-card__head h2{margin:0;font-size:1rem}.tag-free{background:var(--color-success-soft);color:var(--color-success);white-space:nowrap;border-radius:999px;padding:2px 10px;font-size:.75rem;font-weight:700}.drop-card__status{margin:var(--space-3) 0 0;font-size:.85rem}@media (max-width:860px){.home-hero__inner{gap:var(--space-6);padding:var(--space-6) var(--gutter) var(--space-7);grid-template-columns:minmax(0,1fr)}.home-hero h1{font-size:1.65rem}}.chips{gap:var(--space-2);margin-top:var(--space-4);flex-wrap:wrap;display:flex}.chips label{cursor:pointer;position:relative}.chips input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.chips 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