/* PatentPaper — prebuilt design system (compiled artifact of src/input.css).
   Ship-ready so the site renders with zero build. Run `npm run build` to regenerate. */
:root{--gold:#C9A227;--gold-soft:#E0C158;--gold-deep:#A8861B;--purple:#6B46C1;--purple-soft:#8B6BE0;--purple-deep:#4C2F8F;--ink-900:#0E0820;--ink-800:#120A24;--ink-700:#160E2B;--ink-600:#1E1340;--ink-500:#241650;--gray-100:#E7E4F1;--gray-200:#C7C3D6;--gray-300:#8E89A6;--gray-400:#6B6780;--gray-500:#4A4560;--gray-600:#2E2940;--line:rgba(255,255,255,.10);--txt:#C7C3D6;--txt-dim:#8E89A6;--maxw:1180px;--maxw-read:740px;--toc-w:300px;--lh:1.75;--space-1:8px;--space-2:16px;--space-3:24px;--space-4:32px;--r:12px;--r-lg:18px;--shadow-card:0 8px 32px -12px rgba(0,0,0,.35)}
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:Inter,"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--ink-900);color:var(--txt);line-height:var(--lh);antialiased;overflow-x:hidden;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
[dir=rtl]{text-align:right}
h1,h2,h3,h4{font-family:Sora,Inter,system-ui,sans-serif;color:#fff;line-height:1.12;font-weight:700;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:rgba(201,162,39,.3);color:#fff}
/* ===== Background aura ===== */
body::before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(900px 600px at 12% -8%,rgba(107,70,193,.45),transparent 60%),radial-gradient(800px 600px at 100% 0%,rgba(201,162,39,.16),transparent 55%),radial-gradient(900px 700px at 50% 120%,rgba(76,47,143,.4),transparent 60%),var(--ink-900)}
body::after{content:"";position:fixed;inset:0;z-index:-1;opacity:.4;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");pointer-events:none}
/* ===== Layout ===== */
.container-x{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(201,162,39,.32);background:rgba(201,162,39,.10);color:var(--gold-soft);padding:6px 16px;border-radius:999px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.16em}
.lead{font-size:18px;color:var(--txt);max-width:680px}
.grad-text{background:linear-gradient(100deg,var(--gold-soft),var(--gold) 40%,var(--purple-soft));-webkit-background-clip:text;background-clip:text;color:transparent}
.gold{color:var(--gold-soft)}
.muted{color:var(--txt-dim)}
h2.h{font-size:clamp(28px,4vw,44px)}
.sec-head{max-width:720px;margin-bottom:48px}
.center.sec-head{margin-left:auto;margin-right:auto}
/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:13px 26px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.2s ease;white-space:nowrap}
.btn-gold{background:linear-gradient(180deg,var(--gold-soft),var(--gold));color:#1a1208;box-shadow:0 12px 34px -12px rgba(201,162,39,.6)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 44px -12px rgba(201,162,39,.7)}
.btn-ghost{border-color:rgba(255,255,255,.16);color:#fff;background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3)}
.btn-purple{background:linear-gradient(180deg,var(--purple-soft),var(--purple));color:#fff}
.btn-purple:hover{transform:translateY(-2px);box-shadow:0 16px 40px -14px rgba(139,107,224,.7)}
.btn-sm{padding:9px 16px;font-size:13px}
/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(14,8,32,.72);border-bottom:1px solid var(--line);overflow:visible}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;min-width:0;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-family:Sora,sans-serif;font-weight:700;color:#fff;font-size:18px;flex-shrink:0;min-width:0}
.brand-name{white-space:nowrap}
.logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--gold),var(--purple));display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;box-shadow:0 6px 18px -6px rgba(201,162,39,.6)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:18px}
.nav-links a{font-size:14px;color:var(--txt);font-weight:500;transition:.15s}
.nav-links a:hover{color:#fff}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0;flex-wrap:nowrap}
.nav-right .btn-sm{white-space:nowrap;flex-shrink:0;line-height:1.2}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:22px;cursor:pointer;flex-shrink:0}
/* lang switcher — vertical slug list (en / cn / tw …) */
.lang{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--txt);padding:8px 12px;border-radius:999px;font-size:13px;cursor:pointer;text-transform:lowercase}
.lang-btn:hover{color:#fff;border-color:rgba(255,255,255,.25)}
#langLabel{font-family:Sora,Inter,sans-serif;font-weight:700;letter-spacing:.04em}
.lang-menu{position:fixed;top:var(--lang-top,calc(100% + 8px));right:var(--lang-right,12px);left:auto;background:#160e2b;border:1px solid var(--line);border-radius:14px;padding:10px;min-width:210px;max-width:min(92vw,280px);max-height:min(70vh,420px);overflow-y:auto;box-shadow:0 30px 60px -20px rgba(0,0,0,.6);display:none;flex-direction:column;z-index:9999;-webkit-overflow-scrolling:touch}
.lang-menu.open{display:flex}
.lang-menu-title{margin:0 0 8px;padding:0 10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--txt-dim)}
.lang-menu-list{display:flex;flex-direction:column;flex-wrap:nowrap;gap:2px;width:100%}
.lang-option{display:flex;flex-direction:row;align-items:center;gap:12px;width:100%;background:none;border:0;color:var(--txt);padding:10px 12px;border-radius:10px;font-size:14px;cursor:pointer;text-align:left;text-decoration:none;transition:background .15s;box-sizing:border-box}
.lang-option:hover,.lang-option.is-active,.lang-option[aria-current=true]{background:rgba(139,107,224,.2);color:#fff}
.lang-slug{font-family:Sora,ui-monospace,monospace;font-weight:700;font-size:14px;text-transform:lowercase;color:var(--gold-soft);min-width:2.2em;flex:none}
.lang-name{font-size:13px;color:var(--txt-dim);flex:1}
.lang-option.is-active .lang-name,.lang-option[aria-current=true] .lang-name{color:#fff}
/* ===== Hero ===== */
.hero{position:relative;padding:120px 0 90px}
.hero h1{font-size:clamp(38px,6vw,68px);max-width:14ch}
.hero .lead{font-size:clamp(17px,2vw,21px);margin-top:22px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero-trust{margin-top:40px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:var(--txt-dim);font-size:13px}
.avatars{display:flex}
.avatars span{width:30px;height:30px;border-radius:50%;border:2px solid var(--ink-900);margin-left:-8px;background:linear-gradient(135deg,var(--purple-soft),var(--gold))}
.stars{color:var(--gold-soft);letter-spacing:2px}
/* ===== Stats band ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.stat .n{font-family:Sora,sans-serif;font-size:clamp(28px,4vw,40px);font-weight:700;color:#fff}
.stat .n span{color:var(--gold-soft)}
.stat .l{color:var(--txt-dim);font-size:13px;margin-top:4px}
/* ===== Logo strip ===== */
.logo-strip{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap;opacity:.7}
.logo-strip span{font-family:Sora,sans-serif;font-weight:600;color:var(--txt-dim);font-size:16px;letter-spacing:.04em}
/* ===== Grids & cards ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{position:relative;border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border-radius:var(--r);padding:28px;transition:.25s ease}
.card:hover{transform:translateY(-4px);border-color:rgba(201,162,39,.4);box-shadow:0 24px 60px -24px rgba(107,70,193,.55)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{font-size:15px;color:var(--txt)}
.card-icon{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,rgba(201,162,39,.22),rgba(107,70,193,.28));border:1px solid var(--line);margin-bottom:18px}
.card .link{display:inline-flex;gap:6px;margin-top:16px;color:var(--gold-soft);font-weight:600;font-size:14px}
.card .link:hover{gap:10px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{font-size:12px;color:var(--txt-dim);border:1px solid var(--line);border-radius:999px;padding:4px 11px}
/* ===== Feature row ===== */
.feature-row{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.feature-row.rev .panel{order:-1}
.checklist{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.ck{display:flex;gap:12px;align-items:flex-start}
.ck .dot{flex:none;width:22px;height:22px;border-radius:50%;background:rgba(201,162,39,.16);color:var(--gold-soft);display:grid;place-items:center;font-size:12px;margin-top:2px}
.ck b{color:#fff;font-weight:600}
.panel{border:1px solid var(--line);border-radius:20px;background:linear-gradient(160deg,rgba(107,70,193,.18),rgba(255,255,255,.02));padding:30px;box-shadow:0 40px 90px -40px rgba(107,70,193,.6)}
.panel .row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.panel .row:last-child{border-bottom:0}
.panel .row b{color:#fff}
.flow{display:flex;flex-direction:column;gap:12px}
.flow-step{display:flex;gap:14px;align-items:center;padding:13px 16px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.03)}
.flow-step .i{flex:none;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--gold),var(--purple));display:grid;place-items:center;color:#fff;font-weight:700;font-size:14px}
.flow-step b{color:#fff;font-size:14px}
.flow-step p{font-size:12.5px;color:var(--txt-dim)}
/* ===== Pipeline ===== */
.pipeline{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.pipe-step{border:1px solid var(--line);border-radius:14px;padding:20px 16px;background:rgba(255,255,255,.03);position:relative}
.pipe-step .num{font-family:Sora;color:var(--gold-soft);font-size:13px;font-weight:700}
.pipe-step b{display:block;color:#fff;margin:8px 0 6px;font-size:15px}
.pipe-step p{font-size:12.5px;color:var(--txt-dim)}
/* ===== Testimonials ===== */
.quote{border:1px solid var(--line);border-radius:18px;padding:28px;background:rgba(255,255,255,.03)}
.quote p{font-size:15.5px;color:#e7e4f1;font-style:italic}
.quote .who{display:flex;align-items:center;gap:12px;margin-top:18px}
.quote .who .av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--purple-soft),var(--gold))}
.quote .who b{color:#fff;font-size:14px;display:block}
.quote .who span{color:var(--txt-dim);font-size:12.5px}
/* ===== Pricing ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.price-card{border:1px solid var(--line);border-radius:20px;padding:30px;background:rgba(255,255,255,.03);position:relative}
.price-card.feat{border-color:rgba(201,162,39,.5);background:linear-gradient(180deg,rgba(201,162,39,.10),rgba(107,70,193,.10));box-shadow:0 40px 90px -40px rgba(201,162,39,.5)}
.ribbon{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(180deg,var(--gold-soft),var(--gold));color:#1a1208;font-size:11px;font-weight:700;padding:5px 14px;border-radius:999px;text-transform:uppercase;letter-spacing:.1em}
.price-card h3{font-size:19px}
.amt{font-family:Sora;font-size:40px;color:#fff;font-weight:700;margin:14px 0 4px}
.amt small{font-size:14px;color:var(--txt-dim);font-weight:400}
.price-card ul{list-style:none;margin:20px 0;display:flex;flex-direction:column;gap:11px}
.price-card li{display:flex;gap:10px;font-size:14px;color:var(--txt)}
.price-card li::before{content:"✓";color:var(--gold-soft);font-weight:700}
/* ===== FAQ ===== */
.faq{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:600;color:#fff;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold-soft);font-size:20px}
.faq[open] summary::after{content:"−"}
.faq .body{padding:0 22px 20px;color:var(--txt);font-size:14.5px}
/* ===== CTA band ===== */
.cta-band{border-radius:26px;border:1px solid rgba(201,162,39,.3);background:linear-gradient(120deg,rgba(107,70,193,.32),rgba(201,162,39,.18));padding:60px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(28px,4vw,42px)}
/* ===== keyword cloud ===== */
.kw-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.kw-cloud span{font-size:13px;color:var(--txt-dim);border:1px solid var(--line);border-radius:999px;padding:6px 13px;transition:.2s}
.kw-cloud span:hover{color:var(--gold-soft);border-color:rgba(201,162,39,.4)}
/* ===== breadcrumb / prose / blog ===== */
.breadcrumb{font-size:13px;color:var(--txt-dim);margin-bottom:18px}
.breadcrumb a:hover{color:var(--gold-soft)}
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:26px;margin:38px 0 14px}
.prose h3{font-size:20px;margin:28px 0 10px}
.prose p{margin:14px 0;color:var(--txt);font-size:16px}
.prose ul,.prose ol{margin:14px 0 14px 22px;color:var(--txt)}
.prose li{margin:7px 0}
.prose blockquote{border-left:3px solid var(--gold);padding:6px 18px;margin:20px 0;color:#e7e4f1;font-style:italic;background:rgba(201,162,39,.06)}
.post-card{display:flex;flex-direction:column;height:100%}
.post-card .meta{font-size:12.5px;color:var(--txt-dim);margin-bottom:10px;display:flex;gap:10px}
.post-card h3{font-size:18px;margin-bottom:8px}
/* ===== wallet modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(8,4,20,.7);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-overlay.open{display:flex}
.modal{width:100%;max-width:440px;background:#140c28;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 50px 120px -30px rgba(0,0,0,.7)}
.modal h3{font-size:20px}
.modal .sub{color:var(--txt-dim);font-size:13.5px;margin:6px 0 20px}
.modal .close{float:right;background:none;border:0;color:var(--txt-dim);font-size:22px;cursor:pointer;line-height:1}
.wallet-list{display:grid;gap:10px}
.wallet-opt{display:flex;align-items:center;gap:14px;width:100%;border:1px solid var(--line);background:rgba(255,255,255,.03);border-radius:14px;padding:14px 16px;cursor:pointer;transition:.18s;color:#fff;font-weight:600;font-size:15px}
.wallet-opt:hover{border-color:rgba(201,162,39,.45);background:rgba(201,162,39,.08);transform:translateY(-1px)}
.wallet-opt .ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:18px;background:rgba(255,255,255,.06)}
.wallet-opt .badge{margin-left:auto;font-size:11px;color:var(--gold-soft);border:1px solid rgba(201,162,39,.3);border-radius:999px;padding:2px 9px}
.modal .legal{font-size:11.5px;color:var(--txt-dim);margin-top:18px;text-align:center}
.acct{display:inline-flex;align-items:center;gap:8px}
.acct .dotg{width:8px;height:8px;border-radius:50%;background:#3ddc84;box-shadow:0 0 8px #3ddc84}
/* ===== footer ===== */
.footer{border-top:1px solid var(--line);padding:64px 0 36px;margin-top:40px;background:rgba(10,6,24,.5)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer h5{color:#fff;font-size:14px;margin-bottom:14px;font-family:Sora}
.footer a{display:block;color:var(--txt-dim);font-size:13.5px;margin-bottom:10px;transition:.15s}
.footer a:hover{color:var(--gold-soft)}
.footer .desc{color:var(--txt-dim);font-size:13.5px;max-width:280px;margin-top:14px}
.footer-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--txt-dim);font-size:12.5px}
/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(22px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
/* ===== responsive ===== */
@media(max-width:960px){.grid-3,.grid-4,.price-grid{grid-template-columns:repeat(2,1fr)}.pipeline{grid-template-columns:repeat(3,1fr)}.feature-row{grid-template-columns:1fr;gap:30px}.feature-row.rev .panel{order:0}.footer-grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.nav-inner{gap:8px;height:60px;overflow:visible}.nav-right{gap:6px;align-items:center}.brand{font-size:15px;min-width:0}.brand-name{display:inline!important}.lang{position:static}.lang-btn{padding:7px 10px;font-size:12px;gap:4px;flex-shrink:0;height:36px}.nav-right .btn-sm{padding:7px 10px;font-size:11px;height:36px;display:inline-flex;align-items:center}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:36px;height:36px;padding:6px;flex-shrink:0}.menu-toggle span{display:block;width:20px;height:2px;background:currentColor;border-radius:1px;transition:transform .2s,opacity .2s}.menu-toggle.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle.on span:nth-child(2){opacity:0}.menu-toggle.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.nav-links{display:none}.nav-links.open{display:flex;position:absolute;top:60px;left:0;right:0;flex-direction:column;background:#140c28;padding:18px 24px;border-bottom:1px solid var(--line);gap:16px;z-index:55;box-shadow:0 18px 40px -16px rgba(0,0,0,.55)}.grid-2,.grid-3,.grid-4,.price-grid{grid-template-columns:1fr}.pipeline{grid-template-columns:1fr 1fr}.section{padding:64px 0}.cta-band{padding:36px 22px}.hero{padding:80px 0 60px}}
[dir=rtl] .nav-inner{direction:ltr}
[dir=rtl] .nav-links{margin-left:18px;margin-right:0}
[dir=rtl] .nav-right{margin-left:auto;margin-right:0}
[dir=rtl] .lang-menu,[dir=rtl] .lang-menu-list{direction:ltr;flex-direction:column}
/* ===== Article page ===== */
.article-page .article-shell{max-width:1180px}
.article-header h1{font-size:clamp(28px,4vw,40px);max-width:720px;line-height:1.2;margin:12px 0 10px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--txt-dim);margin-bottom:8px}
.article-meta .read-time::before{content:"⏱ ";opacity:.7}
.article-layout{display:grid;grid-template-columns:minmax(280px,var(--toc-w)) minmax(0,var(--maxw-read)) 1fr;gap:40px;align-items:start;margin:20px auto 0;max-width:var(--maxw)}
.article-sidebar{position:sticky;top:88px;align-self:start;max-height:calc(100vh - 120px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.22) transparent;padding-right:4px}
.article-sidebar::-webkit-scrollbar{width:4px}
.article-sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);border-radius:2px}
.article-toc{font-size:14px;color:#6B7280;border:1px solid var(--line);border-radius:14px;padding:18px 16px;background:rgba(255,255,255,.03)}
.article-toc .toc-label{font-weight:600;color:#fff;font-size:12px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.article-toc ol{list-style:none;counter-reset:toc}
.article-toc li{margin:6px 0;line-height:1.45}
.article-toc a{display:block;padding:6px 8px 6px 12px;border-left:3px solid transparent;color:#6B7280;font-weight:400;transition:all .2s;border-radius:0 8px 8px 0}
.article-toc a:hover{color:var(--purple-soft)}
.article-toc a.is-active{color:#fff;font-weight:600;border-left-color:var(--purple);background:rgba(107,70,193,.08)}
.article-toc .toc-h3 a{padding-left:28px;font-size:13px}
.toc-mobile-toggle{display:none;width:100%;margin-bottom:12px;padding:10px 14px;border:1px solid var(--line);border-radius:var(--r);background:rgba(255,255,255,.04);color:#fff;font-size:14px;font-weight:600;cursor:pointer}
.read-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;background:rgba(255,255,255,.06)}
.read-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--purple),var(--gold));transition:width .1s linear}
.back-to-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:rgba(20,12,40,.92);color:var(--gold-soft);font-size:18px;cursor:pointer;opacity:0;visibility:hidden;transition:.2s;z-index:55;box-shadow:var(--shadow-card)}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{border-color:rgba(201,162,39,.5);transform:translateY(-2px)}
.sources-list .src-favicon{border-radius:3px;flex:none}
.sources-list .src-pending,.sources-list .src-unverified{color:var(--gray-400)}
.article-prose{max-width:var(--maxw-read);line-height:var(--lh);margin:0 auto}
.article-prose h2{font-size:24px;margin:36px 0 14px;scroll-margin-top:88px}
.article-prose h3{font-size:19px;margin:24px 0 10px;scroll-margin-top:88px}
.article-prose p{margin:1.1em 0;font-size:18px}
.article-prose .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:20px 0;border-radius:var(--r);border:1px solid var(--line)}
.article-prose ol,.article-prose ul{margin:14px 0 14px 1.4em}
.article-prose li{margin:8px 0}
.article-prose li strong{color:#fff}
.article-prose table.zebra{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-prose table.zebra th,.article-prose table.zebra td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-prose table.zebra th{background:rgba(107,70,193,.22);color:#fff}
.article-prose table.zebra tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.tldr-card{position:relative;border:1px solid rgba(201,162,39,.35);border-left:4px solid var(--purple);background:linear-gradient(135deg,rgba(201,162,39,.12),rgba(107,70,193,.08));border-radius:var(--r);padding:18px 20px 18px 44px;margin:0 0 28px;box-shadow:var(--shadow-card)}
.tldr-card .tldr-icon{position:absolute;left:16px;top:20px;color:var(--gold-soft);font-size:14px}
.tldr-card .tldr-label{font-family:Sora,sans-serif;font-weight:700;color:var(--gold-soft);font-size:13px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px}
.tldr-card p{font-size:17px;color:#e7e4f1;margin:6px 0;line-height:var(--lh)}
.callout.callout-def{border-left:3px solid var(--purple-soft);background:rgba(107,70,193,.1);border-radius:0 12px 12px 0;padding:4px 16px;margin:20px 0}
.callout.callout-def blockquote{border:none;padding:0;margin:0;font-style:normal;color:#e7e4f1}
.sources-card{margin:36px 0 24px;border:1px solid var(--line);border-radius:16px;padding:20px 22px;background:rgba(255,255,255,.03)}
.sources-card h2{font-size:20px;margin:0 0 14px}
.sources-list{list-style:none;counter-reset:src;margin:0;padding:0}
.sources-list li{margin:10px 0;font-size:14.5px;display:flex;gap:8px;align-items:baseline;border-radius:10px;padding:8px 10px;transition:background .25s}
.sources-list li:target{background:rgba(107,70,193,.18);outline:1px solid rgba(107,70,193,.35)}
.sources-list .src-num{color:var(--gold-soft);font-weight:700;flex:none}
.sources-list a{color:var(--gold-soft);text-decoration:underline;text-underline-offset:3px}
.sup.cite a{font-size:11px;color:var(--gold-soft);text-decoration:none;font-weight:600}
.faq-stack{margin-top:12px}
.faq-stack .faq-item{border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.03);margin-bottom:10px;overflow:hidden;transition:border-color .2s}
.faq-stack .faq-item[open]{border-color:rgba(107,70,193,.35)}
.faq-stack .faq-item summary{padding:16px 18px;font-weight:600;color:#fff;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-stack .faq-item summary::-webkit-details-marker{display:none}
.faq-stack .faq-item summary::after{content:"▸";color:var(--purple-soft);font-size:14px;transition:transform .2s;flex:none}
.faq-stack .faq-item[open] summary::after{transform:rotate(90deg)}
.faq-stack .faq-item .faq-a{padding:0 18px 16px;font-size:15px;color:var(--txt);line-height:1.7}
.cluster-nav{display:flex;justify-content:space-between;gap:16px;margin:36px 0 8px;padding-top:24px;border-top:1px solid var(--line);font-size:14px}
.cluster-nav a{color:var(--txt-dim);max-width:45%}
.cluster-nav a:hover{color:var(--gold-soft)}
.related-section{margin-top:40px}
.related-section h2{font-size:22px;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.related-card{display:block;border:1px solid var(--line);border-radius:14px;padding:18px;background:rgba(255,255,255,.03);transition:.2s}
.related-card:hover{border-color:rgba(201,162,39,.4);transform:translateY(-2px)}
.related-card h3{font-size:16px;margin:0 0 6px;color:#fff}
.related-card p{font-size:13px;color:var(--txt-dim);margin:0}
.article-cta{margin-top:36px}
.article-disclaimer{margin-top:20px;font-size:13px}
.breadcrumb .sep{margin:0 8px;opacity:.5}
@media(max-width:1100px){.article-layout{grid-template-columns:1fr;max-width:none}.article-sidebar{position:static;order:-1;max-height:none;overflow:visible;padding-right:0}.article-toc{display:none}.article-toc.open{display:block}.toc-mobile-toggle{display:block}.related-grid{grid-template-columns:1fr}.article-prose{padding:0 16px;max-width:none}.article-header{padding:0 16px}.breadcrumb{padding:0 16px}}