.legacy .section{padding:clamp(4rem,8vw,7rem) 0;position:relative}.legacy .section-tight{padding:clamp(3rem,6vw,4.5rem) 0}.legacy .bg-sunken,.legacy .section-wash{background:var(--bg-alt)}.legacy .container{width:100%;max-width:calc(var(--max) + var(--gut) * 2);margin:0 auto;padding:0 var(--gut)}.legacy .container-wide{max-width:calc(1440px + var(--gut) * 2)}.legacy .container-narrow{max-width:calc(780px + var(--gut) * 2)}.legacy .breadcrumb{position:absolute;top:calc(var(--nav-h) + 1.4rem);left:0;right:0;z-index:2;font-family:var(--mono);font-size:0.72rem;letter-spacing:0.06em;text-transform:uppercase;color:#9aa1b5}.legacy .breadcrumb .container{display:flex;flex-wrap:wrap;gap:0.3rem 0.5rem}.legacy .breadcrumb a{color:#c3c8d8}.legacy .breadcrumb a:hover{color:#fff}:lang(zh) .legacy .breadcrumb{font-family:var(--sans);font-size:0.82rem;letter-spacing:0.02em}.legacy .page-hero,.legacy .app-hero{--bg:#05060a;--bg-alt:#0a0c13;--card:rgba(255,255,255,.035);--card-2:rgba(255,255,255,.06);--ink:#f1f3fa;--ink-2:#aab0c3;--ink-3:#858ca1;--line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.18);--accent:#8fabff;--accent-soft:rgba(143,171,255,.14);--btn-bg:#f1f3fa;--btn-ink:#05060a;--btn-hover:#fff;--grad-text:var(--grad);--logo:brightness(0) invert(1);position:relative;overflow:hidden;isolation:isolate;background:var(--bg);color:var(--ink);color-scheme:dark;padding:calc(var(--nav-h) + clamp(4.4rem,8vw,6.8rem)) 0 clamp(3.4rem,7vw,5.5rem)}.legacy .page-hero::before,.legacy .app-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(55% 70% at 85% 0%,rgba(79,124,255,.22),transparent 70%),radial-gradient(40% 60% at 100% 60%,rgba(139,92,255,.14),transparent 70%)}.legacy .hero-bg{display:none}.legacy .display{font-size:clamp(2.5rem,1.3rem + 4vw,4.9rem);line-height:1.0;letter-spacing:-0.045em;max-width:17ch}:lang(zh) .legacy .display{letter-spacing:-0.01em;line-height:1.16;max-width:14em}.legacy .grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}.legacy .page-hero .lead,.legacy .app-sub{margin-top:1.3rem}.legacy .lead{font-size:clamp(1.1rem,1rem + 0.42vw,1.3rem);line-height:1.55;color:var(--ink-2);max-width:60ch}.legacy .body-lg{font-size:clamp(1.1rem,1rem + 0.3vw,1.24rem);line-height:1.65;color:var(--ink-2)}.legacy .cta-row{display:flex;flex-wrap:wrap;gap:0.7rem;margin-top:2rem}.legacy .center{text-align:center}.legacy .center .cta-row,.legacy .cta-row-attached{justify-content:center}.legacy .mt-2{margin-top:1.4rem}.legacy .mt-3{margin-top:2.4rem}.legacy .h-xl{font-size:clamp(2.05rem,1.2rem + 2.9vw,3.6rem);line-height:1.04;letter-spacing:-0.04em}.legacy .h-lg{font-size:clamp(1.8rem,1.1rem + 2vw,2.8rem);line-height:1.06;letter-spacing:-0.035em}.legacy .h-md{font-size:clamp(1.2rem,1.05rem + 0.5vw,1.45rem);line-height:1.25;letter-spacing:-0.02em}.legacy .section-head{max-width:50rem;margin-bottom:clamp(2.2rem,4.5vw,3.6rem)}.legacy .section-head .lead{margin-top:1rem}.legacy .eyebrow-plain{display:block;font-family:var(--mono);font-size:0.7rem;letter-spacing:0.07em;text-transform:uppercase;color:var(--accent);margin-bottom:0.2rem}:lang(zh) .legacy .eyebrow-plain{font-family:var(--sans);font-size:0.8rem;letter-spacing:0.02em}.legacy .tile-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(0.8rem,1.4vw,1.1rem)}.legacy .tile-grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.legacy .tile-grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media (max-width:1000px){.legacy .tile-grid,.legacy .tile-grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:640px){.legacy .tile-grid,.legacy .tile-grid.cols-2,.legacy .tile-grid.cols-4{grid-template-columns:1fr}}.legacy .tile{position:relative;display:flex;flex-direction:column;gap:0.6rem;padding:clamp(1.4rem,2.2vw,1.9rem);border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);transition:border-color 0.3s,transform 0.6s var(--ease),box-shadow 0.5s var(--ease)}.legacy a.tile:hover{border-color:var(--line-2);transform:translate3d(0,-4px,0);box-shadow:var(--shadow-lg)}.legacy .tile h3{font-size:1.18rem;line-height:1.28}.legacy .tile p{color:var(--ink-2);font-size:0.97rem;line-height:1.58}.legacy .tile .link-chevron{margin-top:auto}.legacy .tile-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:0.4rem;background:var(--accent-soft);color:var(--accent)}.legacy .tile-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.legacy .link-chevron{display:inline-flex;align-items:center;gap:0.35em;color:var(--accent);font-weight:550}.legacy .link-chevron::after{content:"→";transition:transform 0.4s var(--ease)}.legacy a.link-chevron:hover::after,.legacy a:hover>.link-chevron::after{transform:translateX(3px)}.legacy .feat-list{display:grid;gap:0.7rem;margin-top:1.2rem}.legacy .feat-list li{position:relative;padding-left:1.6rem;color:var(--ink-2)}.legacy .feat-list li::before{content:"";position:absolute;left:0.1rem;top:0.45em;width:0.5rem;height:0.28rem;border-left:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);transform:rotate(-45deg)}.legacy .chip-row,.legacy .chip-cloud{display:flex;flex-wrap:wrap;gap:0.45rem}.legacy .chip{display:inline-flex;align-items:center;height:30px;padding:0 0.8rem;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:0.82rem;color:var(--ink-2)}.legacy .stat-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));margin-top:2.6rem;border-top:1px solid var(--line)}.legacy .stat-strip .cell{padding:1.2rem 1rem 0 0;display:flex;flex-direction:column;gap:0.4rem}.legacy .stat-strip .cell + .cell{padding-left:1rem;border-left:1px solid var(--line)}.legacy .num{font-size:clamp(1.8rem,1.2rem + 1.6vw,2.6rem);font-weight:600;letter-spacing:-0.045em;line-height:1}.legacy .label{font-size:0.84rem;color:var(--ink-3)}.legacy .stats-band{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--line)}.legacy .feature-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,5rem);align-items:center}.legacy .feature-row + .feature-row{margin-top:clamp(3.5rem,7vw,6rem)}.legacy .feature-row.reverse .feature-copy{order:2}.legacy .feature-copy p{color:var(--ink-2);margin-top:1rem}.legacy .feature-visual{border-radius:var(--r-xl);background:var(--bg-alt);border:1px solid var(--line);padding:clamp(1.4rem,3vw,2.4rem);display:grid;place-items:center;min-height:320px}.legacy .glass{background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow)}.legacy .glass-panel{padding:clamp(1.5rem,3vw,2.4rem);display:block;min-height:0;place-items:initial}.legacy .glass-panel--tight{padding:1.3rem 1.4rem}@media (max-width:900px){.legacy .feature-row{grid-template-columns:1fr}.legacy .feature-row.reverse .feature-copy{order:0}}.legacy .mockup{width:min(100%,420px);background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.3rem}.legacy .app-icon-md{width:72px;height:72px;border-radius:17px}.legacy .mockup-grid{display:grid;grid-template-columns:repeat(2,auto);gap:1rem;background:none;border:0}.legacy .app-hero{text-align:center}.legacy .app-hero .container{display:flex;flex-direction:column;align-items:center}.legacy .app-icon-lg{width:clamp(104px,11vw,128px);height:auto;aspect-ratio:1;border-radius:24%;margin-bottom:1.6rem;box-shadow:0 30px 60px -20px rgba(79,124,255,.45);animation:floaty-y 6s var(--ease-io) infinite alternate}@keyframes floaty-y{to{transform:translate3d(0,-8px,0)}}.legacy .app-hero h1{font-size:clamp(2.8rem,1.2rem + 5vw,5.8rem);line-height:0.98;letter-spacing:-0.05em}.legacy .app-sub{font-size:clamp(1.08rem,1rem + 0.4vw,1.3rem);color:var(--ink-2);max-width:44ch;line-height:1.5}.legacy .app-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:0.8rem;margin-top:1.8rem}.legacy .app-badges img{height:50px;width:auto;transition:transform 0.5s var(--ease)}.legacy .app-badges a:hover img{transform:translateY(-3px)}.legacy .app-spec{margin-top:0.9rem;font-size:0.86rem;color:var(--ink-3)}.legacy .app-spec a{color:var(--accent)}.legacy .app-soon{display:inline-flex;align-items:center;gap:0.5rem;margin-top:1.6rem;padding:0.7rem 1.3rem;border-radius:999px;border:1px solid var(--line-2);color:var(--ink-2)}.legacy .app-soon .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}.legacy .shots{display:flex;gap:clamp(0.8rem,1.6vw,1.2rem);overflow-x:auto;scrollbar-width:none;scroll-snap-type:x mandatory;padding:0.4rem var(--gut) 1rem;margin:0 calc(var(--gut) * -1);justify-content:safe center}.legacy .shots::-webkit-scrollbar{display:none}.legacy .shots img{width:clamp(200px,22vw,250px);flex:0 0 auto;border-radius:clamp(22px,2.4vw,30px);border:1px solid var(--line);scroll-snap-align:center;box-shadow:var(--shadow)}.legacy .apps-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}@media (max-width:1000px){.legacy .apps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:600px){.legacy .apps-grid{grid-template-columns:1fr}}.legacy .app-card{display:flex;gap:1rem;align-items:flex-start;padding:1.4rem;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);transition:transform 0.6s var(--ease),border-color 0.3s}.legacy .app-card:hover{transform:translate3d(0,-4px,0);border-color:var(--line-2)}.legacy .app-card>img{width:64px;height:64px;border-radius:15px;flex:0 0 auto}.legacy .app-card p{color:var(--ink-2);font-size:0.95rem;margin-top:0.3rem}.legacy .app-meta-row{display:flex;flex-wrap:wrap;gap:0.35rem;margin-top:0.7rem}.legacy .app-status{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.78rem;color:var(--ink-2);margin-right:0.3rem}.legacy .app-status .dot{width:7px;height:7px;border-radius:50%;background:#22c58b}.legacy .app-status:not(.live) .dot{background:var(--ink-3)}.legacy .app-chip{font-size:0.72rem;padding:0.15rem 0.5rem;border-radius:999px;border:1px solid var(--line);color:var(--ink-3)}.legacy .faq-list{border-top:1px solid var(--line);max-width:58rem}.legacy .faq-item{border-bottom:1px solid var(--line)}.legacy .faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1.4rem;padding:1.3rem 0;font-size:clamp(1.02rem,1rem + 0.25vw,1.16rem);font-weight:550;line-height:1.4}.legacy .faq-item summary::-webkit-details-marker{display:none}.legacy .faq-item summary::after{content:"";flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:1px solid var(--line-2);background:linear-gradient(currentColor,currentColor) center / 10px 1.5px no-repeat,linear-gradient(currentColor,currentColor) center / 1.5px 10px no-repeat;transition:transform 0.5s var(--ease)}.legacy .faq-item[open] summary::after{transform:rotate(135deg)}.legacy .faq-body{padding:0 3rem 1.4rem 0;color:var(--ink-2);line-height:1.7}.legacy .faq-group{margin:2rem 0 0.4rem;font-family:var(--mono);font-size:0.74rem;letter-spacing:0.07em;text-transform:uppercase;color:var(--accent)}.legacy .cta-band{--bg:#05060a;--card:rgba(255,255,255,.035);--card-2:rgba(255,255,255,.06);--ink:#f1f3fa;--ink-2:#aab0c3;--ink-3:#858ca1;--line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.18);--accent:#8fabff;--btn-bg:#f1f3fa;--btn-ink:#05060a;--btn-hover:#fff;position:relative;overflow:hidden;isolation:isolate;padding:clamp(3rem,7vw,5.5rem) clamp(1.5rem,5vw,4rem);border-radius:var(--r-xl);background:#05060a;color:var(--ink);text-align:center;color-scheme:dark}.legacy .cta-band::before{content:"";position:absolute;left:50%;top:100%;width:900px;height:700px;margin:-350px 0 0 -450px;z-index:-1;border-radius:50%;background:radial-gradient(closest-side,rgba(79,124,255,.45),rgba(139,92,255,.2) 45%,transparent 75%)}.legacy .cta-band h2{max-width:18ch;margin:0 auto}.legacy .cta-band p{color:var(--ink-2);max-width:48ch;margin:1rem auto 0}.legacy .cta-band .cta-row{justify-content:center}.legacy .cta-band .eyebrow{justify-content:center}.legacy .cta-band--left{text-align:left;padding:clamp(1.6rem,3vw,2.2rem);margin-top:1.4rem}.legacy .cta-band--left p{margin-left:0}.legacy .cta-note{margin-top:1.1rem;font-size:0.9rem;color:var(--ink-3)}.legacy .cta-note a{color:var(--accent)}.legacy .chapter-nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.legacy .chapter-nav .track{display:flex;gap:0.3rem;overflow-x:auto;scrollbar-width:none;padding:0.6rem 0}.legacy .chapter-nav .track::-webkit-scrollbar{display:none}.legacy .chapter-nav a{flex:0 0 auto;padding:0.4rem 0.9rem;border-radius:999px;font-size:0.86rem;color:var(--ink-2);transition:color 0.2s,background-color 0.2s}.legacy .chapter-nav a:hover{color:var(--ink);background:var(--card-2)}.legacy .chapter-nav a.active{color:var(--bg);background:var(--ink)}.legacy .btn-secondary{border-color:var(--line-2);color:var(--ink);background:transparent}.legacy .btn-secondary:hover{background:var(--card-2);border-color:var(--ink-3)}.legacy .btn-ghost.link-chevron{height:auto;padding:0;border:0}.legacy .price-card{display:flex;flex-direction:column;padding:1.5rem;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.legacy .price-card.featured{background:linear-gradient(var(--card),var(--card)) padding-box,var(--grad) border-box;border-color:transparent}.legacy .price-card .tier{font-family:var(--mono);font-size:0.72rem;letter-spacing:0.06em;text-transform:uppercase;color:var(--ink-3)}.legacy .price-card .price{margin-top:0.7rem;font-size:2rem;font-weight:600;letter-spacing:-0.045em}.legacy .price-card .price small{font-size:0.9rem;font-weight:400;color:var(--ink-3)}.legacy .price-card .spend{font-size:0.88rem;color:var(--ink-2)}.legacy .price-card ul{display:grid;gap:0.5rem;margin:1.1rem 0 1.3rem}.legacy .price-card li{position:relative;padding-left:1.4rem;font-size:0.9rem;color:var(--ink-2)}.legacy .price-card li::before{content:"";position:absolute;left:0.1rem;top:0.4em;width:0.5rem;height:0.28rem;border-left:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);transform:rotate(-45deg)}.legacy .price-card .btn{margin-top:auto}.legacy .scan-panel{text-align:left;margin-top:2.2rem;max-width:46rem;padding:clamp(1.4rem,3vw,2.1rem);border-radius:var(--r-xl);background:rgba(255,255,255,.04);border:1px solid var(--line-2)}.legacy .scan-form{display:flex;flex-wrap:wrap;gap:0.6rem;margin-top:1rem}.legacy .scan-form input{flex:1 1 15rem;min-width:0;min-height:52px;padding:0 1rem;border-radius:999px;border:1px solid var(--line-2);background:rgba(255,255,255,.06);color:var(--ink);font-size:1rem}.legacy .scan-form input:focus{outline:none;border-color:rgba(143,171,255,.7);box-shadow:0 0 0 5px rgba(79,124,255,.16)}.legacy .scan-form button{--h:52px}.legacy .scan-form button[disabled]{opacity:0.6;pointer-events:none}.legacy .scan-note{font-size:0.84rem;color:var(--ink-3);margin-top:0.8rem}.legacy .scan-out{margin-top:1.6rem}.legacy .scan-msg{display:flex;align-items:center;gap:0.6rem;color:var(--ink-2)}.legacy .scan-spinner{width:16px;height:16px;border-radius:50%;border:2px solid var(--line-2);border-top-color:var(--accent);animation:spin 0.8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.legacy .scan-head{display:flex;flex-wrap:wrap;align-items:center;gap:1.3rem}.legacy .scan-ring{position:relative;width:108px;height:108px;flex:0 0 auto}.legacy .scan-ring svg{width:108px;height:108px;transform:rotate(-90deg)}.legacy .scan-ring circle{fill:none;stroke-width:9;stroke-linecap:round}.legacy .scan-ring .track{stroke:var(--line-2)}.legacy .scan-ring .bar{stroke:var(--accent);transition:stroke-dashoffset 1s var(--ease)}.legacy .scan-ring[data-band="strong"] .bar{stroke:var(--ok)}.legacy .scan-ring[data-band="patchy"] .bar{stroke:var(--warn)}.legacy .scan-ring[data-band="weak"] .bar{stroke:var(--bad)}.legacy .scan-ring b{position:absolute;inset:0;display:grid;place-items:center;font-size:1.9rem;letter-spacing:-0.04em}.legacy .scan-head-copy{flex:1 1 14rem}.legacy .scan-head-copy p{color:var(--ink-2);font-size:0.93rem}.legacy .scan-checks{display:grid;margin-top:1.4rem}.legacy .scan-check{display:grid;grid-template-columns:22px 1fr auto;gap:0.5rem 0.8rem;padding:0.85rem 0;border-top:1px solid var(--line)}.legacy .scan-check .ico{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:0.72rem;font-weight:700}.legacy .scan-check[data-s="pass"] .ico{background:var(--ok-soft);color:var(--ok)}.legacy .scan-check[data-s="warn"] .ico{background:var(--warn-soft);color:var(--warn)}.legacy .scan-check[data-s="fail"] .ico{background:var(--bad-soft);color:var(--bad)}.legacy .scan-check h4{font-size:0.98rem}.legacy .scan-check p{font-size:0.88rem;color:var(--ink-2)}.legacy .scan-check .pts,.legacy .signal-list .pts{font-size:0.8rem;color:var(--ink-2);white-space:nowrap}.legacy .scan-cta{margin-top:1.5rem;padding-top:1.3rem;border-top:1px solid var(--line)}.legacy .scan-cta>p{color:var(--ink-2);font-size:0.93rem;margin:0.4rem 0 1rem}.legacy .scan-cta-row{display:flex;flex-wrap:wrap;gap:0.6rem}.legacy .scan-diy a{color:var(--ink-2)}@media (max-width:560px){.legacy .scan-check{grid-template-columns:22px 1fr}.legacy .scan-check .pts{grid-column:2}}.legacy .cmp-wrap{overflow-x:auto;margin-top:1.6rem}.legacy .cmp-table,.legacy .prose table{width:100%;border-collapse:collapse;font-size:0.94rem;min-width:32rem}.legacy .cmp-table th,.legacy .cmp-table td,.legacy .prose th,.legacy .prose td{text-align:left;padding:0.8rem 0.9rem;border-bottom:1px solid var(--line);vertical-align:top}.legacy .cmp-table thead th,.legacy .prose th{font-weight:600;font-size:0.86rem}.legacy .cmp-table tbody th{font-weight:500;color:var(--ink-2)}.legacy .signal-list{counter-reset:sig;display:grid;margin:1.2rem 0 1.6rem}.legacy .signal-list li{counter-increment:sig;padding:1.1rem 0;border-top:1px solid var(--line)}.legacy .signal-list li::before{content:counter(sig,decimal-leading-zero);margin-right:0.7rem;font-family:var(--mono);font-size:0.74rem;color:var(--accent)}.legacy .signal-list h3{display:inline;font-size:1.04rem}.legacy .signal-list p{font-size:0.93rem;color:var(--ink-2);margin-top:0.4rem}.legacy .form-grid{display:grid;gap:1rem}.legacy .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media (max-width:600px){.legacy .form-row{grid-template-columns:1fr}}.legacy .support-form{padding:clamp(1.4rem,3vw,2rem);margin-bottom:2.4rem;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line)}.prose{max-width:44rem;margin:0 auto}.prose>* + *{margin-top:1.1rem}.prose h2{margin-top:3rem;font-size:clamp(1.5rem,1.1rem + 1.2vw,2.05rem);letter-spacing:-0.03em}.prose h3{margin-top:2.2rem;font-size:1.24rem}.prose h2 + *,.prose h3 + *{margin-top:0.8rem}.prose p,.prose li{color:var(--ink-2);line-height:1.78}.prose ul:not([class]){list-style:disc;padding-left:1.3rem}.prose ol:not([class]){list-style:decimal;padding-left:1.3rem}.prose li + li{margin-top:0.45rem}.prose li::marker{color:var(--accent)}.prose a:not(.btn):not(.link-chevron){color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.prose blockquote{border-left:2px solid var(--accent);padding-left:1.3rem;color:var(--ink);font-size:1.15rem}.prose code{font-family:var(--mono);font-size:0.88em;background:var(--bg-alt);padding:0.1em 0.4em;border-radius:6px}.prose img{border-radius:var(--r)}.prose .prose-table{overflow-x:auto}.prose hr{border:0;border-top:1px solid var(--line);margin:2.4rem 0}