:root{color:#172033;--border:#dce3ec;--muted:#637083;--surface:#fff;--primary:#2457d6;background:#f6f8fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,sans-serif;line-height:1.7}*{box-sizing:border-box}body{margin:0}a{color:#174dbf;text-underline-offset:.15em;text-decoration-thickness:.08em}a:hover{text-decoration-thickness:.14em}.container{width:min(1120px,100% - 32px);margin-inline:auto}.site-header{z-index:10;border-bottom:1px solid var(--border);backdrop-filter:blur(10px);background:#fffffff5;position:sticky;top:0}.nav-wrap{justify-content:space-between;align-items:center;gap:24px;min-height:64px;display:flex}.brand{color:#15203a;font-size:1.15rem;font-weight:800;text-decoration:none}nav{flex-wrap:wrap;gap:18px;font-size:.94rem;display:flex}nav a{color:#3a4659;text-decoration:none}.hero{background:linear-gradient(#fff 0%,#f6f8fb 100%);padding:72px 0 48px}.hero h1{letter-spacing:-.04em;max-width:850px;margin:0 0 16px;font-size:clamp(2rem,5vw,3.8rem);line-height:1.16}.hero p{max-width:760px;color:var(--muted);font-size:1.08rem}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.button{border:1px solid var(--border);color:#253047;font-weight:700;font:inherit;cursor:pointer;background:#fff;border-radius:10px;padding:11px 16px;text-decoration:none;display:inline-flex}.button.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.button:disabled{opacity:.45;cursor:not-allowed}.filter-tabs{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.filter-tab{border:1px solid var(--border);color:#344056;min-height:40px;font:inherit;cursor:pointer;background:#fff;border-radius:10px;justify-content:center;align-items:center;padding:8px 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a{color:#18233c}.product-card p{color:#566376;font-size:.94rem}.card-topline{justify-content:space-between;align-items:center;gap:8px;display:flex}.eyebrow{color:#66758b;letter-spacing:.03em;font-size:.8rem;font-weight:700}.card-deadline{border-top:1px solid #edf0f5;margin-bottom:0;padding-top:12px}.status-badge{white-space:nowrap;border-radius:999px;align-items:center;padding:3px 9px;font-size:.75rem;font-weight:800;display:inline-flex}.status-ended{color:#5d6673;background:#f1f2f4}.status-critical{color:#a51e1e;background:#ffe8e8}.status-warning{color:#895100;background:#fff0d9}.status-planning{color:#715d00;background:#fff8cf}.status-supported{color:#1d6a3e;background:#e6f6ed}.status-unknown{color:#536070;background:#eef1f5}.deadline-list{gap:10px;margin-top:20px;display:grid}.deadline-row{border:1px solid var(--border);background:#fff;border-radius:12px;grid-template-columns:minmax(150px,1.4fr) minmax(100px,.7fr) minmax(130px,.9fr) auto;align-items:center;gap:12px;padding:14px 16px;display:grid}.deadline-row .muted{color:var(--muted);font-size:.9rem}.attention-list{gap:10px;margin-top:20px;display:grid}.attention-row{border:1px solid var(--border);background:#fff;border-radius:12px;grid-template-columns:44px minmax(200px,1.5fr) minmax(100px,.65fr) minmax(120px,.8fr) auto;align-items:center;gap:12px;padding:14px 16px;display:grid}.attention-rank{color:#234fb5;background:#edf3ff;border-radius:999px;place-items:center;width:36px;height:36px;font-weight:800;display:grid}.attention-views{color:#43516a;white-space:nowrap;font-size:.9rem;font-weight:700}.page-head{padding:48px 0 24px}.page-head h1{letter-spacing:-.03em;margin:0 0 10px;font-size:clamp(2rem,4vw,3rem)}.page-head p{max-width:800px;color:var(--muted)}.search-box{width:100%;max-width:640px;font:inherit;background:#fff;border:1px solid #bcc7d6;border-radius:10px;padding:13px 15px}.table-wrap{border:1px solid 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var(--border);background:#fff;border-radius:14px;padding:18px 20px}.history-item h2{margin:6px 0;font-size:1.15rem}.history-item p{color:#4f5c70;margin:6px 0 0}.history-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:12px;font-size:.88rem;display:flex}.history-empty{margin-top:20px}.calendar-toolbar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;display:flex}.calendar-label{font-weight:700}.calendar-select{color:#172033;min-width:180px;font:inherit;background:#fff;border:1px solid #bcc7d6;border-radius:10px;padding:10px 12px}.calendar-panel{min-height:180px}.calendar-heading-row{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.calendar-heading-row h2{margin-bottom:0}.back-to-top{z-index:20;color:#1f4fc2;width:48px;height:48px;font:inherit;cursor:pointer;backdrop-filter:blur(8px);background:#fffffff5;border:1px solid #c8d2e1;border-radius:999px;font-size:1.35rem;font-weight:800;line-height:1;position:fixed;bottom:24px;right:24px;box-shadow:0 8px 24px #17203329}.back-to-top:hover{border-color:#9eacc0;transform:translateY(-1px)}.back-to-top:focus-visible{outline-offset:3px;outline:3px solid #2457d647}.back-to-top[hidden]{display:none}.site-footer{border-top:1px solid var(--border);color:#667386;background:#fff;margin-top:48px;padding:36px 0;font-size:.9rem}.footer-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.copyright{color:#4f5c70;margin-bottom:0;font-weight:600}@media (width<=860px){.grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr}.deadline-row{grid-template-columns:1fr 1fr}.attention-row{grid-template-columns:44px 1fr 1fr}.attention-row>:nth-child(2){grid-column:2/-1}.attention-views{justify-self:start}.two-col,.version-list{grid-template-columns:1fr}}@media (width<=620px){.nav-wrap{flex-direction:column;align-items:flex-start;padding:14px 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.history-select,.external-notification-form .search-box{width:100%;max-width:760px}.external-notification-message{background:#f2fbf5;border-color:#b9d7c4}.external-notification-message.external-notification-error{color:#8a2525;background:#fff5f5;border-color:#e2b8b8}.external-notification-status-row{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.external-notification-status-row p{margin:4px 0 0}@media (width<=620px){.external-notification-status-row{flex-direction:column}.external-notification-form .history-select,.external-notification-form .search-box{max-width:none}}