:root{
  --bg:#fff;--fg:#202020;--muted:#666;--card:#fff;--line:rgba(34,34,34,.13);--soft:#f7f7f5;
  --orange:#eb7410;--orange-deep:#df6807;--green:#55a947;--red:#e64b3c;
  --shadow:0 18px 58px rgba(52,38,20,.16);--radius:18px;--max:1320px
}
*{box-sizing:border-box}html{scroll-behavior:smooth;color-scheme:light}body{margin:0;background:var(--bg);color:var(--fg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input{font:inherit}.wrap{width:min(var(--max),calc(100% - 44px));margin:0 auto}
.site-header{height:74px;display:flex;align-items:center;position:sticky;top:0;z-index:80;background:rgba(255,255,255,.95);backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.08);box-shadow:0 2px 10px rgba(0,0,0,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:780;letter-spacing:-.03em;font-size:20px}.brand-logo{width:38px;height:38px}.brand-name>span{font-weight:650;color:#777;margin-left:2px}.retail-btn,.primary-btn,.secondary-btn,.download-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:7px;padding:10px 17px;font-weight:700;border:1px solid var(--line);transition:.18s ease;cursor:pointer}.retail-btn{background:#fff;color:#333;border-color:#d7d7d7}.retail-btn:hover{border-color:#bdbdbd;background:#fafafa}.primary-btn{background:var(--orange);border-color:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(235,116,16,.18)}.primary-btn:hover{background:var(--orange-deep);border-color:var(--orange-deep);transform:translateY(-1px)}.secondary-btn{background:#fff;color:var(--orange);border-color:var(--orange)}.secondary-btn:hover{background:#fff8f1}
.hero-product{position:relative;overflow:hidden;min-height:735px;padding:58px 0 38px;background:#fff;text-align:left}.hero-grid{position:relative;z-index:2;width:min(1480px,calc(100% - 44px));margin:0 auto;display:grid;grid-template-columns:minmax(440px,39%) minmax(0,61%);align-items:center;min-height:620px}.hero-copy{padding-left:40px;padding-right:38px;max-width:610px}.hero h1{font-size:clamp(42px,4.1vw,64px);line-height:1.12;letter-spacing:-.045em;margin:0 0 26px;color:var(--orange);font-weight:760}.hero p{font-size:17px;line-height:1.58;color:#666;margin:0 0 28px;max-width:540px}.hero-glow{position:absolute;border-radius:50%;filter:blur(72px);pointer-events:none;opacity:.42}.hero-glow-orange{width:560px;height:560px;left:-130px;top:10px;background:radial-gradient(circle,#f6c490 0,rgba(246,196,144,.18) 62%,transparent 75%)}.hero-glow-green{width:650px;height:480px;left:33%;top:-120px;background:radial-gradient(circle,#d9efd2 0,rgba(217,239,210,.16) 63%,transparent 76%)}
.hero-download{width:min(460px,100%);min-height:58px;padding:10px 20px;font-size:16px}.hero-download>span:last-child{display:flex;flex-direction:column;align-items:flex-start;line-height:1.15}.hero-download strong{font-size:16px}.hero-download small{font-size:12px;font-weight:500;opacity:.86;margin-top:4px}.download-icon{font-size:25px;line-height:1}.platform-link{display:block;width:min(460px,100%);text-align:center;margin:13px 0 14px;color:var(--orange);font-size:13px;font-weight:650}.platform-link:hover{text-decoration:underline}.hero-secondary{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:min(460px,100%)}.hero-secondary .secondary-btn{min-height:40px}.meta-row{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin:18px 0 0;color:#646464;font-size:13px}.meta-item:not(:last-child):after{content:"•";color:var(--orange);margin-left:13px}.meta-item:first-child{color:#ef493c}.desktop-note{width:min(500px,100%);margin-top:18px;padding:12px 14px;border-left:3px solid var(--orange);background:rgba(255,248,239,.82);font-size:12.5px;color:#686868;border-radius:0 7px 7px 0}.desktop-note strong{color:#444}
.hero-visual{align-self:stretch;display:flex;align-items:center;justify-content:flex-end;min-width:0;position:relative}.app-window{width:min(1040px,78vw);margin-right:-128px;border:1px solid #c8c8c8;border-radius:8px 0 0 8px;overflow:hidden;background:white;box-shadow:0 18px 46px rgba(0,0,0,.18)}.app-window img{width:100%;height:auto;display:block}
.trusted-strip{background:#fff;padding:28px 0 21px;border-top:1px solid rgba(0,0,0,.06)}.trust-wrap{width:min(1380px,calc(100% - 44px));margin:0 auto;text-align:center}.trusted-title{font-size:12px;text-transform:uppercase;letter-spacing:.14em;font-weight:800;color:#8b8b8b;margin-bottom:16px}.trusted-logos{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));align-items:center;gap:12px}.trusted-logo{height:58px;display:flex;align-items:center;justify-content:center;padding:6px 9px;opacity:.68;filter:grayscale(1)}.trusted-logo img{width:100%;height:48px;object-fit:contain}.trusted-logo:hover{opacity:.95;filter:grayscale(0)}.trusted-disclaimer{font-size:10.5px;color:#aaa;margin-top:10px}
.section-nav-wrap{position:sticky;top:74px;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(16px);border-top:1px solid rgba(0,0,0,.05);border-bottom:1px solid rgba(0,0,0,.09)}.section-nav{display:flex;justify-content:center;gap:12px;overflow:auto;padding:15px 0;scrollbar-width:none}.section-nav::-webkit-scrollbar{display:none}.section-nav a{white-space:nowrap;padding:4px 8px;border-radius:7px;color:#646464;font-size:14px;font-weight:700}.section-nav a:hover{color:var(--orange);background:#fff7ef}
.section{padding:92px 0}.section.alt{background:var(--soft)}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:800;color:var(--orange);margin-bottom:13px}.section h2,.page h1{font-size:clamp(34px,5vw,56px);line-height:1.06;letter-spacing:-.045em;margin:0 0 18px}.section-lead{max-width:760px;color:var(--muted);font-size:18px;margin:0 0 36px}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}.media-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px;box-shadow:var(--shadow);overflow:hidden}.media-card img{width:100%;border-radius:11px}.stack{display:grid;gap:15px}.benefit{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.benefit h3,.feature h3,.download-card h2,.resource-card h3{margin:0 0 7px;font-size:18px;letter-spacing:-.018em}.benefit p,.feature p,.resource-card p,.download-card p{margin:0;color:var(--muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.feature{padding:22px;border:1px solid var(--line);border-radius:15px;background:var(--card);min-height:156px}.feature .icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;margin-bottom:18px;background:color-mix(in srgb,var(--orange) 14%,transparent);font-size:17px}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.tab{border:1px solid var(--line);background:var(--card);color:var(--fg);padding:9px 13px;border-radius:10px;cursor:pointer;font-weight:650}.tab.active{background:var(--fg);color:var(--bg);border-color:var(--fg)}.showcase{display:grid;grid-template-columns:.75fr 1.25fr;gap:30px;align-items:center}.showcase-copy h3{font-size:28px;margin:0 0 10px;letter-spacing:-.03em}.showcase-copy p{color:var(--muted);font-size:17px}.showcase-img{border:1px solid var(--line);border-radius:17px;background:var(--card);padding:10px;box-shadow:var(--shadow)}.showcase-img img{border-radius:11px;width:100%}.more-pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.pill{border:1px solid var(--line);border-radius:999px;padding:7px 11px;font-size:13px;color:var(--muted);background:var(--card)}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.pillar{border:1px solid var(--line);border-radius:16px;background:var(--card);padding:25px}.pillar h3{margin:0 0 9px;font-size:22px}.pillar ul{padding-left:18px;color:var(--muted);margin:14px 0 0}.logo-cloud{display:flex;gap:9px;flex-wrap:wrap;margin-top:22px}.logo-chip{padding:9px 12px;border-radius:9px;border:1px solid var(--line);background:var(--card);font-weight:650;font-size:14px}
.faq{display:grid;gap:10px}.faq details{border:1px solid var(--line);border-radius:13px;background:var(--card);padding:0 18px}.faq summary{cursor:pointer;font-weight:700;padding:18px 4px;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";float:right;color:var(--muted);font-size:22px;line-height:1}.faq details[open] summary:after{content:"−"}.faq details p{color:var(--muted);margin:0 4px 20px}
.final-cta{padding:88px 0;text-align:center}.cta-box{padding:54px 28px;border-radius:24px;background:linear-gradient(135deg,color-mix(in srgb,var(--orange) 13%,var(--card)),color-mix(in srgb,var(--green) 10%,var(--card)));border:1px solid var(--line)}.cta-box h2{font-size:clamp(32px,5vw,52px);letter-spacing:-.045em;line-height:1.05;margin:0 auto 14px}.cta-box p{color:var(--muted);font-size:18px;max-width:680px;margin:0 auto 24px}
footer{border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:13px}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.footer-links a:hover{color:var(--fg)}
.page{padding:72px 0 100px}.page-intro{max-width:760px;margin-bottom:36px}.page-intro p{color:var(--muted);font-size:18px}.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.download-card,.resource-card{border:1px solid var(--line);border-radius:16px;background:var(--card);padding:24px}.download-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.download-btn{padding:9px 12px;background:var(--soft);font-size:14px}.download-btn:hover:not(.disabled){background:var(--fg);color:var(--bg)}.download-btn.disabled{opacity:.45;cursor:not-allowed}.code{display:block;background:#0f141c;color:#e8e8e8;border-radius:11px;padding:13px 15px;overflow:auto;margin:16px 0;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.subhead{font-size:30px;margin:65px 0 20px;letter-spacing:-.03em}.resource-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.resource-meta{font-size:12px;color:var(--muted);font-weight:700;margin:0 0 8px}.resource-actions{display:flex;gap:10px;margin-top:18px}.text-link{color:var(--orange);font-weight:700}.support-list{max-width:780px}.support-list li{margin:10px 0;color:var(--muted)}.notice{border:1px solid var(--line);background:var(--soft);border-radius:13px;padding:15px 17px;color:var(--muted);font-size:14px;margin-top:22px}

@media(max-width:1180px){.hero-grid{grid-template-columns:44% 56%}.app-window{width:74vw;margin-right:-100px}.trusted-logos{grid-template-columns:repeat(5,1fr);row-gap:10px}.trusted-logo:nth-child(n+6){grid-column:auto}.section-nav{justify-content:flex-start}}
@media(max-width:900px){.hero-product{padding:42px 0 30px;min-height:auto}.hero-grid{grid-template-columns:1fr;gap:38px}.hero-copy{max-width:720px;padding:0}.hero h1{font-size:clamp(40px,8vw,58px)}.hero-visual{justify-content:center}.app-window{width:100%;margin:0;border-radius:9px}.split,.showcase{grid-template-columns:1fr}.grid-3,.download-grid{grid-template-columns:repeat(2,1fr)}.pillars{grid-template-columns:1fr}.section{padding:70px 0}.showcase-copy{order:1}.showcase-img{order:2}.trusted-logos{grid-template-columns:repeat(3,1fr)}}
@media(max-width:620px){.wrap,.trust-wrap,.hero-grid{width:min(var(--max),calc(100% - 26px))}.site-header{height:66px}.section-nav-wrap{top:66px}.brand-name>span{display:none}.retail-btn{padding:8px 11px;font-size:13px}.hero-product{padding-top:32px}.hero h1{font-size:40px}.hero p{font-size:16px}.hero-secondary{grid-template-columns:1fr}.hero-download{width:100%}.platform-link{width:100%}.meta-row{gap:8px}.meta-item:not(:last-child):after{margin-left:8px}.trusted-logos{grid-template-columns:repeat(2,1fr)}.trusted-logo{height:52px}.grid-3,.grid-2,.download-grid,.resource-grid{grid-template-columns:1fr}.section{padding:58px 0}.page{padding-top:50px}.footer-row{align-items:flex-start;flex-direction:column}}

/* v3 interaction + trust strip fixes */
.trusted-logos{grid-template-columns:repeat(10,minmax(0,1fr))}
.trusted-logo.purechain-logo img{max-width:76px;max-height:48px}
.tab{position:relative;z-index:2;touch-action:manipulation;user-select:none}
.tab:hover{border-color:#bdbdbd;background:#fafafa}
.tab.active:hover{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.mobile-download-disabled{cursor:default;opacity:.92}
@media(max-width:1180px){.trusted-logos{grid-template-columns:repeat(5,1fr)}}
@media(max-width:900px){.trusted-logos{grid-template-columns:repeat(3,1fr)}}
@media(max-width:620px){.trusted-logos{grid-template-columns:repeat(2,1fr)}}


/* v4 simplified layout */
.brand-lockup{height:38px;width:auto;display:block}.brand-logo{width:38px;height:38px}.brand-name{display:none}.tabs{display:none}.showcase{margin-top:8px}.trusted-logo.purechain-logo img{max-width:180px;max-height:38px}.download-grid{grid-template-columns:repeat(2,1fr)}@media(max-width:620px){.brand-lockup{height:34px}}