:root{color-scheme:light;--brand: #0f2035;--brand-mid: #1a3a5c;--accent: #f59e0b;--accent-soft: #fef3c7;--accent-dark: #92400e;--ink: #0f172a;--muted: #64748b;--line: #e2e8f0;--panel: #f1f5f9;--paper: #ffffff;--good: #059669;--good-soft: #dcfce7;--warn: #d97706;--warn-soft: #fef3c7;--bad: #dc2626;--bad-soft: #fee2e2;--max: 1140px;--r: 8px;--r-sm: 5px;--shadow-sm: 0 1px 3px rgba(0,0,0,.07), 0 2px 6px rgba(0,0,0,.04);--shadow: 0 4px 16px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.06);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-size:17px;line-height:1.7}img,svg{display:block}h1,h2,h3,h4{line-height:1.2}a{color:#1d6fa5;text-decoration-thickness:1px;text-underline-offset:.2em}a:hover{color:var(--accent-dark)}.container,.header-inner,.footer-inner{width:min(var(--max),calc(100% - 40px));margin:0 auto}.site-header{background:var(--brand);position:sticky;top:0;z-index:30;box-shadow:0 2px 0 var(--accent),0 4px 12px #00000040}.header-inner{min-height:68px;display:flex;align-items:center;gap:24px;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex-shrink:0}.brand-icon{width:38px;height:38px;flex-shrink:0}.brand-wordmark{display:flex;flex-direction:column;line-height:1.15}.brand-wordmark .wm-main{font-size:1.05rem;font-weight:800;color:#fff;letter-spacing:-.01em}.brand-wordmark .wm-sub{font-size:.63rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}.nav{display:flex;gap:2px;flex-wrap:wrap;justify-content:flex-end;font-size:.875rem}.nav a{color:#94a3b8;text-decoration:none;padding:5px 9px;border-radius:var(--r-sm);font-weight:500;transition:color .12s,background .12s}.nav a:hover{color:#fff;background:#f59e0b33}.hero{background:var(--brand);color:#fff;padding:56px 0 50px;border-bottom:3px solid var(--accent)}.hero h1{margin:0 0 16px;line-height:1.07;font-size:clamp(2rem,5vw,3.8rem);letter-spacing:-.025em;color:#fff}.hero p:not(.kicker){max-width:680px;margin:0;color:#94a3b8;font-size:1.1rem;line-height:1.65}main{padding:40px 0 80px}h1{font-size:clamp(1.9rem,4vw,3rem);margin:0 0 18px;color:var(--brand);letter-spacing:-.02em}h2{font-size:1.5rem;margin:34px 0 14px;color:var(--brand)}h3{font-size:1.15rem;margin:22px 0 10px;color:var(--brand)}.page-title{font-size:clamp(2rem,5vw,3.4rem);letter-spacing:-.025em;line-height:1.07;margin:0 0 22px;color:var(--brand)}.kicker{display:inline-block;background:var(--accent-soft);border:1px solid #fde68a;color:var(--accent-dark);font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:999px;margin-bottom:10px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.card{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:var(--paper);box-shadow:var(--shadow-sm);transition:box-shadow .15s,transform .15s}.card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.card h2,.card h3{margin:0 0 8px;font-size:1.05rem;line-height:1.3;color:var(--brand);border:none;padding:0}.card p{color:var(--muted);margin:0;font-size:.93rem}.card .meta{margin-top:10px}a.card{display:block;color:var(--brand);text-decoration:none;font-weight:600;font-size:.95rem;padding:14px 18px}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:44px;align-items:start}.article-content{max-width:780px}.article-content h1{font-size:clamp(2rem,5vw,3.1rem);line-height:1.08;letter-spacing:-.025em;color:var(--brand);margin:10px 0 18px}.article-content h2{font-size:1.4rem;margin-top:42px;margin-bottom:14px;color:var(--brand);padding-bottom:8px;border-bottom:2px solid var(--line)}.lead{font-size:1.08rem;color:#1e293b;line-height:1.75}.note{border-left:4px solid var(--accent);background:#fffbeb;padding:16px 18px;border-radius:0 var(--r) var(--r) 0;margin:22px 0}.note h2{margin:0 0 10px;font-size:1.1rem;border:none;padding:0}.disclaimer{border-left:4px solid var(--warn);background:#fffbeb;padding:16px 18px;border-radius:0 var(--r) var(--r) 0;margin:22px 0;font-size:.95rem;color:#78350f}.source-review-notice{border-left:4px solid var(--bad);background:var(--bad-soft);padding:14px 16px;border-radius:0 var(--r) var(--r) 0;margin:18px 0;font-size:.95rem}.source-box{border:1px solid var(--line);border-left:4px solid var(--muted);background:var(--panel);padding:16px 18px;border-radius:0 var(--r) var(--r) 0;margin:22px 0}.source-box ul{margin:8px 0 0;padding-left:0;list-style:none}.source-box li{margin:8px 0;font-size:.93rem}.meta{color:var(--muted);font-size:.88rem;line-height:1.5}.sidebar{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:var(--panel);position:sticky;top:90px;box-shadow:var(--shadow-sm)}.sidebar h2{font-size:.73rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:14px 0 8px;padding-bottom:6px;border-bottom:1px solid var(--line);border-left:none;background:none}.sidebar h2:first-child{margin-top:0}.sidebar ul,.clean-list{list-style:none;padding:0;margin:0}.sidebar li,.clean-list li{margin:7px 0;font-size:.91rem}.checklist{border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 18px 38px;background:var(--paper);box-shadow:var(--shadow-sm);margin:18px 0}.checklist li{margin:8px 0;line-height:1.55}.checklist li::marker{color:var(--accent);font-size:1.1em}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--paper);box-shadow:var(--shadow-sm);margin:18px 0}table{width:100%;min-width:520px;border-collapse:collapse;font-size:.93rem}th{background:var(--brand);color:#fff;font-size:.77rem;text-transform:uppercase;letter-spacing:.06em;font-weight:700}th,td{padding:11px 16px;border-bottom:1px 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8px;border-radius:999px;font-size:.7rem;font-weight:700;letter-spacing:.04em;margin-right:5px;background:var(--brand);color:#fff;vertical-align:middle}details{border:1px solid var(--line);border-radius:var(--r);margin:10px 0;background:var(--paper);overflow:hidden}summary{cursor:pointer;padding:14px 18px;font-weight:600;font-size:.98rem;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;user-select:none;color:var(--brand);transition:background .1s}summary:hover{background:var(--panel)}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:1.4rem;font-weight:300;color:var(--muted);flex-shrink:0;line-height:1}details[open]>summary:after{content:"−"}details[open]>summary{border-bottom:1px solid var(--line)}details>p{margin:0;padding:14px 18px;color:#1e293b;line-height:1.7;font-size:.97rem}.wear-diagram{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;max-width:420px;margin:18px 0}.wear-diagram span{height:48px;border-radius:var(--r-sm);border:1px solid #cbd5e1;background:repeating-linear-gradient(90deg,#dde5ea 0 10px,#c8d5da 10px 20px)}.site-footer{background:var(--brand);border-top:3px solid var(--accent);color:#64748b;padding:44px 0 36px;font-size:.9rem}.site-footer strong{color:#f1f5f9;font-size:1rem}.site-footer p{margin:10px 0 0;line-height:1.65;max-width:660px}.footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px}.footer-links a{color:#64748b;text-decoration:none;transition:color .12s}.footer-links a:hover{color:var(--accent)}.article-figure{margin:2rem 0 2.5rem;text-align:center}.article-figure img{max-width:100%;height:auto;border-radius:var(--r);box-shadow:var(--shadow-sm);display:block;margin:0 auto}.hero-figure{margin:2rem 0 0;text-align:center}.hero-figure img{max-width:100%;height:auto;border-radius:var(--r);display:block;margin:0 auto;opacity:.93}@media (max-width: 860px){.header-inner{flex-direction:column;align-items:flex-start;padding:14px 0;gap:10px;min-height:unset}.nav{justify-content:flex-start}.article-shell{grid-template-columns:1fr}.sidebar{position:static}main{padding-top:24px}.tool-form{grid-template-columns:1fr}button,.button{width:100%}}@media print{.site-header,.site-footer,.breadcrumbs,.sidebar,.button,button{display:none}body{background:#fff;color:#000;font-size:12pt}.container,.article-content{width:100%;max-width:none}.checklist,.tool-form,.result{border:1px solid #999}}