:root{color-scheme:dark;--bg:#07101c;--panel:#101e30;--panel2:#15263b;--line:#294057;--txt:#f2f7fc;--muted:#aec1d2;--accent:#74dfba;--second:#66b4ff;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 80% 0%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 38%),var(--bg);color:var(--txt);font:16px/1.65 system-ui,-apple-system,Segoe UI,Arial,sans-serif}a{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--second);outline-offset:3px}.layout{width:min(1120px,calc(100% - 40px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;background:#fff;color:#000;padding:10px;z-index:10}.topbar{border-bottom:1px solid var(--line);background:#07101ce8;position:sticky;top:0;z-index:8;backdrop-filter:blur(18px)}.nav{min-height:75px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:18px;font-weight:900;letter-spacing:.13em;text-decoration:none}.brand span{color:var(--accent)}.links{display:flex;gap:18px;flex-wrap:wrap}.links a{text-decoration:none;color:var(--muted);font-size:14px}.links a:hover,.links a[aria-current=page]{color:var(--accent)}.menu{display:none;border:1px solid var(--line);background:var(--panel);color:var(--txt);border-radius:12px;padding:8px 12px}.hero{padding:83px 0 62px;display:grid;grid-template-columns:1.45fr 1fr;gap:54px;align-items:center}.tag{display:inline-flex;border:1px solid color-mix(in srgb,var(--accent) 55%,transparent);color:var(--accent);border-radius:100px;padding:5px 14px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:800}.hero h1{font-size:clamp(36px,5vw,64px);line-height:1.12;letter-spacing:-.045em;margin:20px 0 18px;max-width:780px}.lede{font-size:18px;color:var(--muted);max-width:700px}.heroart{position:relative;min-height:290px;border:1px solid var(--line);background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 18%,#102236),#0a1324);border-radius:30px;display:grid;place-items:center;overflow:hidden}.heroart:after{content:"";position:absolute;width:240px;height:240px;border-radius:50%;border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);box-shadow:0 0 0 55px #ffffff06,0 0 0 110px #ffffff04}.blockmark{font-size:92px;line-height:1;z-index:1;transform:rotate(-10deg);filter:drop-shadow(0 15px 18px #0008)}.heroart small{position:absolute;bottom:20px;left:24px;color:var(--muted);font-weight:700;letter-spacing:.18em}.btn{border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;border-radius:12px;padding:11px 16px;font-weight:800;background:var(--panel2);color:var(--txt);cursor:pointer;font:inherit;font-weight:750}.btn.primary{border-color:var(--accent);background:var(--accent);color:#061423}.btn:hover{filter:brightness(1.12)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0 0}.section{padding:38px 0}.section h2{font-size:clamp(25px,3vw,36px);line-height:1.2;margin:0 0 16px}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:850}.muted{color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:25px;display:flex;flex-direction:column}.card h3{font-size:20px;margin:9px 0}.card p{color:var(--muted);margin:0 0 18px;flex:1}.card a{color:var(--accent);font-weight:750;text-decoration:none}.card small{color:var(--accent);letter-spacing:.1em;font-weight:800}.cta{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center;margin:32px 0 50px;padding:30px;border:1px solid var(--accent);background:linear-gradient(110deg,color-mix(in srgb,var(--accent) 15%,#111e30),#0e1d30);border-radius:var(--radius)}.cta h2{margin:4px 0 10px}.cta p{margin:0;color:var(--muted)}.copywrap{text-align:center}.ip{display:block;word-break:break-all;font-size:24px;letter-spacing:.015em;font-weight:850;padding-bottom:15px}.status{display:block;min-height:25px;color:var(--accent);font-size:13px}.article{display:grid;grid-template-columns:minmax(0,740px) 1fr;gap:42px;padding:50px 0}.article main{min-width:0}.article h1{font-size:clamp(33px,4.2vw,52px);line-height:1.16;margin:14px 0}.article h2{font-size:26px;line-height:1.25;margin:36px 0 10px}.article p{color:var(--muted)}.article aside{align-self:start;position:sticky;top:100px}.asidebox{background:var(--panel);border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.asidebox a{display:block;color:var(--muted);padding:7px 0;text-decoration:none;font-size:14px}.asidebox a:hover{color:var(--accent)}.feature{border-left:3px solid var(--accent);padding:13px 18px;background:var(--panel);border-radius:0 12px 12px 0;margin:20px 0;color:var(--txt)}.breadcrumbs{font-size:13px;color:var(--muted)}.breadcrumbs a{color:var(--accent)}.faqitem{border:1px solid var(--line);border-radius:12px;margin:12px 0;background:var(--panel)}summary{cursor:pointer;padding:15px 18px;font-weight:750}details p{padding:0 18px 18px;margin:0}.checkitem{display:flex;align-items:start;gap:10px;background:var(--panel);border:1px solid var(--line);margin:10px 0;padding:14px;border-radius:12px;cursor:pointer}.checkitem input{width:20px;height:20px;accent-color:var(--accent);margin-top:3px}.progress{height:11px;background:var(--line);border-radius:20px;overflow:hidden}.progress span{display:block;width:0;height:100%;background:var(--accent);transition:width .2s}.comparison{border-collapse:collapse;width:100%;font-size:14px}.comparison th,.comparison td{border-bottom:1px solid var(--line);text-align:left;padding:12px 9px}.comparison th{color:var(--accent)}.footer{padding:34px 0 48px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.footer a{margin-right:15px}.search{width:100%;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--txt);padding:12px 14px;font:inherit;margin:14px 0 22px}.footnav{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.notice{font-size:13px;color:var(--muted)}@media(max-width:800px){.hero,.cta,.article{grid-template-columns:1fr}.hero{padding:48px 0}.heroart{min-height:210px}.article aside{position:static}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.links{display:none;position:absolute;top:73px;left:0;right:0;background:var(--bg);padding:17px 24px;border-bottom:1px solid var(--line);flex-direction:column}.links.open{display:flex}.menu{display:block}}@media(max-width:550px){.layout{width:min(100% - 28px,1120px)}.cards{grid-template-columns:1fr}.hero h1{font-size:36px}.cta{padding:22px}.ip{font-size:22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* V2: independent visual identity */
:root{--accent:#ff6e52;--second:#f3bb6c}
body{font-family:Georgia,serif}.brand,.links,.btn,.tag,.eyebrow,.card small{font-family:system-ui,sans-serif}.hero{grid-template-columns:1.7fr .65fr}.hero h1{font-weight:650;letter-spacing:-.035em}.card{border-radius:3px}.topbar{border-bottom:3px solid var(--accent)}.heroart{border-radius:4px}.tag{border-radius:2px}

.tool-shell{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.7fr);gap:26px;margin:20px 0 42px}.tool-form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}.tool-form label{display:block;margin:12px 0;color:var(--txt);font-weight:600}.tool-form input:not([type=checkbox]):not([type=range]),.tool-form select,.tool-form textarea{display:block;margin-top:8px;width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--txt);font:inherit}.tool-form input[type=range]{display:block;width:100%;margin-top:9px;accent-color:var(--accent)}.tool-form input[type=checkbox]{accent-color:var(--accent);margin-right:8px}.tool-output{border:1px solid var(--accent);border-radius:var(--radius);padding:25px;align-self:start;background:var(--panel)}.tool-output strong{display:block;font-size:clamp(20px,3vw,32px);line-height:1.2;overflow-wrap:anywhere}.tool-output p{color:var(--muted)}.article-prose{max-width:820px}.article-prose p,.article-prose li{color:var(--muted);line-height:1.8}.article-prose li{margin:8px 0}.sectionlinks{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 35px}.sectionlinks a{border:1px solid var(--line);padding:10px 14px;border-radius:12px;text-decoration:none}.tool-form li{margin:9px 0}.tool-form li button{margin-left:10px}.heroart::before{content:"";position:absolute;inset:12%;border:1px dashed var(--accent);opacity:.45;border-radius:inherit}@media(max-width:750px){.tool-shell{grid-template-columns:1fr}}