/* Hyper Nexus design system 1.0 (2026-10-24) - Apple's typography-led calm, Google's Material 3 clarity.
   Opt in with <body class="ds">. Tokens first, then components. No web fonts: the system stacks give
   SF Pro + PingFang on Apple devices, Roboto + Noto Sans CJK on Android, Segoe UI + YaHei on Windows. */
.ds{
  --ds-font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Hiragino Sans GB",Roboto,"Noto Sans SC","Noto Sans CJK SC","Segoe UI","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --ds-mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --ds-bg:#FBFBFD;--ds-bg2:#F5F5F7;--ds-surface:#FFFFFF;--ds-ink:#1D1D1F;--ds-ink2:#424245;--ds-mute:#6E6E73;--ds-line:rgba(0,0,0,.08);--ds-line2:rgba(0,0,0,.14);
  --ds-brand:#5E56F2;--ds-brand2:#2F7BF6;--ds-brand3:#22B8CF;--ds-grad:linear-gradient(100deg,#7A3CF0 0%,#4E52F2 45%,#22B8CF 100%);
  --ds-link:#0066CC;--ds-ok:#1E8E3E;--ds-warn:#E37400;--ds-bad:#D93025;--ds-info:#1A73E8;
  --ds-tint:rgba(94,86,242,.08);--ds-tint2:rgba(34,184,207,.10);
  --ds-r1:12px;--ds-r2:20px;--ds-r3:28px;--ds-pill:999px;
  --ds-e1:0 1px 2px rgba(0,0,0,.04),0 2px 8px rgba(0,0,0,.04);--ds-e2:0 2px 6px rgba(0,0,0,.04),0 18px 40px rgba(16,24,40,.08);
  --ds-ease:cubic-bezier(.2,0,0,1);--ds-dur:.6s;
  --ds-max:1120px;--ds-text:760px;--ds-pad:clamp(20px,4vw,40px);--ds-sec:clamp(72px,9vw,120px);
  font-family:var(--ds-font);color:var(--ds-ink);background:var(--ds-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;
}
html[data-theme="dark"] .ds{--ds-bg:#000;--ds-bg2:#0E0E11;--ds-surface:#16161A;--ds-ink:#F5F5F7;--ds-ink2:#D2D2D7;--ds-mute:#A1A1A6;--ds-line:rgba(255,255,255,.10);--ds-line2:rgba(255,255,255,.18);--ds-link:#2997FF;--ds-tint:rgba(124,118,255,.14);--ds-tint2:rgba(34,184,207,.14);--ds-e1:none;--ds-e2:0 0 0 1px rgba(255,255,255,.08)}
@media (prefers-color-scheme:dark){html:not([data-theme="light"]) .ds{--ds-bg:#000;--ds-bg2:#0E0E11;--ds-surface:#16161A;--ds-ink:#F5F5F7;--ds-ink2:#D2D2D7;--ds-mute:#A1A1A6;--ds-line:rgba(255,255,255,.10);--ds-line2:rgba(255,255,255,.18);--ds-link:#2997FF;--ds-tint:rgba(124,118,255,.14);--ds-tint2:rgba(34,184,207,.14);--ds-e1:none;--ds-e2:0 0 0 1px rgba(255,255,255,.08)}}
.ds main{display:block}
.ds .ds-wrap{max-width:var(--ds-max);margin:0 auto;padding:0 var(--ds-pad)}
.ds .ds-sec{padding:var(--ds-sec) 0}
.ds .ds-alt{background:var(--ds-bg2)}
.ds h1,.ds h2,.ds h3,.ds h4{font-family:var(--ds-font);color:var(--ds-ink);margin:0;font-weight:600;letter-spacing:-.022em}
.ds .ds-kick{display:inline-block;font-size:14px;font-weight:600;letter-spacing:.01em;margin:0 0 12px;background:var(--ds-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.ds .ds-h1{font-size:clamp(40px,6.2vw,72px);line-height:1.05}
.ds .ds-h2{font-size:clamp(30px,4.2vw,48px);line-height:1.08}
.ds .ds-h3{font-size:clamp(21px,2.2vw,28px);line-height:1.18;letter-spacing:-.015em}
.ds .ds-lead{font-size:clamp(17px,1.6vw,21px);line-height:1.5;color:var(--ds-ink2);margin:20px 0 0;max-width:var(--ds-text)}
.ds p{font-size:17px;line-height:1.6;color:var(--ds-ink2);margin:0}
.ds .ds-small{font-size:14px;line-height:1.5;color:var(--ds-mute)}
.ds .ds-center{text-align:center}.ds .ds-center .ds-lead{margin-left:auto;margin-right:auto}
.ds .ds-grad-text{background:var(--ds-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* product local nav (Apple): sticks under the site bar */
.ds .ds-local{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--ds-bg) 78%,transparent);-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--ds-line)}
.ds .ds-local .ds-wrap{display:flex;align-items:center;gap:20px;height:52px}
.ds .ds-local b{font-size:19px;font-weight:600;letter-spacing:-.01em;color:var(--ds-ink);margin-right:auto;white-space:nowrap}
.ds .ds-local nav{display:flex;gap:20px;overflow-x:auto;scrollbar-width:none}.ds .ds-local nav::-webkit-scrollbar{display:none}
.ds .ds-local nav a{font-size:13px;color:var(--ds-ink2);text-decoration:none;white-space:nowrap;padding:4px 0}
.ds .ds-local nav a:hover,.ds .ds-local nav a[aria-current="true"]{color:var(--ds-ink)}
/* buttons and links */
.ds .ds-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--ds-pill);font:600 15px/1 var(--ds-font);text-decoration:none;border:0;cursor:pointer;transition:transform .2s var(--ds-ease),background .2s,box-shadow .2s;white-space:nowrap}
.ds .ds-btn:active{transform:scale(.98)}
.ds .ds-btn-fill{background:var(--ds-ink);color:var(--ds-bg)}
.ds .ds-btn-fill:hover{background:color-mix(in srgb,var(--ds-ink) 86%,var(--ds-brand))}
.ds .ds-btn-tonal{background:var(--ds-tint);color:var(--ds-brand)}
html[data-theme="dark"] .ds .ds-btn-tonal{color:#B9B5FF}
.ds .ds-btn-sm{min-height:32px;padding:0 14px;font-size:13px}
.ds .ds-link{color:var(--ds-link);text-decoration:none;font-size:17px}.ds .ds-link:hover{text-decoration:underline}
.ds .ds-link::after{content:" ›"}
.ds .ds-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:32px}
.ds .ds-center .ds-actions{justify-content:center}
.ds :focus-visible{outline:3px solid color-mix(in srgb,var(--ds-brand) 70%,transparent);outline-offset:3px;border-radius:8px}
/* hero */
.ds .ds-hero{padding:clamp(48px,7vw,96px) 0 clamp(40px,6vw,80px);text-align:center;overflow:hidden}
.ds .ds-hero .ds-figure{margin:clamp(32px,5vw,56px) auto 0;max-width:880px}
.ds .ds-note{font-size:12px;color:var(--ds-mute);margin-top:10px}
/* chips (Material) */
.ds .ds-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.ds .ds-center .ds-chips{justify-content:center}
.ds .ds-chip{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:var(--ds-pill);border:1px solid var(--ds-line2);font-size:13px;color:var(--ds-ink2);background:var(--ds-surface)}
.ds .ds-chip i{width:8px;height:8px;border-radius:50%;background:var(--ds-ok);flex:none}
.ds .ds-chip.is-std{border-color:transparent;background:var(--ds-tint);color:var(--ds-brand);font-weight:600}
html[data-theme="dark"] .ds .ds-chip.is-std{color:#C9C6FF}
/* grids and cards */
.ds .ds-grid{display:grid;gap:20px}
.ds .ds-g2{grid-template-columns:repeat(2,minmax(0,1fr))}.ds .ds-g3{grid-template-columns:repeat(3,minmax(0,1fr))}.ds .ds-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.ds .ds-g3,.ds .ds-g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.ds .ds-g2,.ds .ds-g3,.ds .ds-g4{grid-template-columns:1fr}}
.ds .ds-card{background:var(--ds-surface);border-radius:var(--ds-r3);padding:32px;box-shadow:var(--ds-e1);border:1px solid var(--ds-line)}
.ds .ds-card h3{font-size:21px;line-height:1.25;letter-spacing:-.012em;margin:16px 0 8px}
.ds .ds-card p{font-size:15px;line-height:1.6}
.ds .ds-ico{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--ds-tint);color:var(--ds-brand)}
html[data-theme="dark"] .ds .ds-ico{color:#C9C6FF}
.ds .ds-ico svg{width:24px;height:24px}
.ds .ds-head{margin-bottom:clamp(36px,5vw,56px)}
/* stats */
.ds .ds-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ds-line);border-bottom:1px solid var(--ds-line)}
.ds .ds-stat{padding:32px 20px;text-align:center}
.ds .ds-stat+.ds-stat{border-left:1px solid var(--ds-line)}
.ds .ds-stat b{display:block;font-size:clamp(32px,4vw,48px);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.ds .ds-stat span{display:block;margin-top:8px;font-size:14px;line-height:1.45;color:var(--ds-mute)}
@media (max-width:820px){.ds .ds-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.ds .ds-stat:nth-child(3){border-left:0}.ds .ds-stat:nth-child(n+3){border-top:1px solid var(--ds-line)}}
/* feature rows */
.ds .ds-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:center;padding:clamp(28px,4vw,48px) 0}
.ds .ds-feature+.ds-feature{border-top:1px solid var(--ds-line)}
.ds .ds-feature.flip .ds-ftext{order:2}
@media (max-width:860px){.ds .ds-feature{grid-template-columns:1fr}.ds .ds-feature.flip .ds-ftext{order:0}}
.ds .ds-ftext h3{font-size:clamp(24px,2.6vw,32px);line-height:1.15;margin-bottom:14px}
.ds .ds-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:22px}
.ds .ds-metric{border-radius:var(--ds-r1);background:var(--ds-bg2);padding:14px 16px}
.ds .ds-alt .ds-metric{background:var(--ds-surface)}
.ds .ds-metric b{display:block;font-size:20px;font-weight:600;letter-spacing:-.01em;color:var(--ds-ink)}
.ds .ds-metric span{font-size:12.5px;color:var(--ds-mute);line-height:1.4;display:block;margin-top:4px}
.ds .ds-metric-tag{font-size:11.5px;font-weight:600;color:var(--ds-brand);margin-top:16px;letter-spacing:.02em}
html[data-theme="dark"] .ds .ds-metric-tag{color:#B9B5FF}
.ds .ds-art{border-radius:var(--ds-r3);background:var(--ds-surface);border:1px solid var(--ds-line);box-shadow:var(--ds-e1);overflow:hidden;aspect-ratio:4/3;display:grid;place-items:center}
.ds .ds-alt .ds-art{background:var(--ds-surface)}
.ds .ds-art svg{width:100%;height:100%}
/* flow */
.ds .ds-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;counter-reset:ds}
@media (max-width:900px){.ds .ds-flow{grid-template-columns:1fr}}
.ds .ds-step{position:relative;background:var(--ds-surface);border:1px solid var(--ds-line);border-radius:var(--ds-r2);padding:22px 20px;box-shadow:var(--ds-e1)}
.ds .ds-step::before{counter-increment:ds;content:counter(ds);display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--ds-grad);color:#fff;font-size:13px;font-weight:700;margin-bottom:12px}
.ds .ds-step b{display:block;font-size:16px;color:var(--ds-ink);margin-bottom:6px}
.ds .ds-step span{font-size:13.5px;line-height:1.55;color:var(--ds-mute);display:block}
.ds .ds-step.is-alert{border-color:color-mix(in srgb,var(--ds-bad) 40%,transparent)}
/* spec tables */
.ds .ds-specs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.ds .ds-specs{grid-template-columns:1fr}}
.ds .ds-spec{background:var(--ds-surface);border:1px solid var(--ds-line);border-radius:var(--ds-r3);padding:28px 28px 12px}
.ds .ds-spec h3{font-size:17px;margin-bottom:10px}
.ds .ds-spec dl{margin:0}
.ds .ds-spec div{display:grid;grid-template-columns:42% 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--ds-line)}
.ds .ds-spec dt{font-size:13.5px;color:var(--ds-mute)}
.ds .ds-spec dd{margin:0;font-size:14.5px;color:var(--ds-ink);font-variant-numeric:tabular-nums}
/* FAQ */
.ds .ds-faq{max-width:var(--ds-text);margin:0 auto}
.ds .ds-faq details{border-bottom:1px solid var(--ds-line)}
.ds .ds-faq summary{list-style:none;cursor:pointer;padding:22px 36px 22px 0;font-size:17px;font-weight:600;color:var(--ds-ink);position:relative}
.ds .ds-faq summary::-webkit-details-marker{display:none}
.ds .ds-faq summary::after{content:"";position:absolute;right:6px;top:50%;width:10px;height:10px;border-right:2px solid var(--ds-mute);border-bottom:2px solid var(--ds-mute);transform:translateY(-70%) rotate(45deg);transition:transform .25s var(--ds-ease)}
.ds .ds-faq details[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.ds .ds-faq details p{padding:0 0 22px;font-size:15.5px}
/* call to action band */
.ds .ds-cta{border-radius:var(--ds-r3);padding:clamp(40px,6vw,72px) var(--ds-pad);text-align:center;background:radial-gradient(120% 140% at 0% 0%,rgba(122,60,240,.14),transparent 55%),radial-gradient(120% 140% at 100% 100%,rgba(34,184,207,.16),transparent 55%),var(--ds-surface);border:1px solid var(--ds-line)}
.ds .ds-sources{font-size:12.5px;line-height:1.7;color:var(--ds-mute);margin-top:28px}
.ds .ds-sources a{color:inherit}
/* scroll reveal (respects reduced motion) */
/* visible by default; hn-ds.js hides only what lies below the fold, then lets it rise in (works without inline code) */
.ds [data-ds-in].ds-pre{opacity:0;transform:translateY(24px);transition:opacity var(--ds-dur) var(--ds-ease),transform var(--ds-dur) var(--ds-ease)}
.ds [data-ds-in].ds-pre.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.ds [data-ds-in].ds-pre{opacity:1;transform:none;transition:none}.ds .ds-anim{animation:none!important}}
/* device art motion */
@keyframes ds-wave{0%{transform:scale(.6);opacity:.55}100%{transform:scale(1.9);opacity:0}}
.ds .ds-wave{transform-origin:center;transform-box:fill-box;animation:ds-wave 3.2s var(--ds-ease) infinite}
.ds .ds-wave.d2{animation-delay:1.06s}.ds .ds-wave.d3{animation-delay:2.12s}
@keyframes ds-pulse{0%,100%{opacity:.35}50%{opacity:1}}
.ds .ds-pt{animation:ds-pulse 2.6s ease-in-out infinite}
.ds .ds-svg-ink{fill:var(--ds-ink)}.ds .ds-svg-mute{fill:var(--ds-mute)}.ds .ds-svg-line{stroke:var(--ds-line2)}
.ds .ds-svg-card{fill:var(--ds-surface)}.ds .ds-svg-bg{fill:var(--ds-bg2)}
.ds .ds-svg-text{fill:var(--ds-ink2);font-family:var(--ds-font)}
.ds .ds-crumbs{font-size:12px;color:var(--ds-mute);padding-top:18px}.ds .ds-crumbs a{color:inherit;text-decoration:none}.ds .ds-crumbs a:hover{color:var(--ds-ink)}

.ds .ds-duo{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(16px,4vw,56px);align-items:end;max-width:900px}.ds .ds-duo figure{margin:0}.ds .ds-duo img{width:100%;height:auto;display:block;filter:drop-shadow(0 30px 40px rgba(29,35,64,.14))}.ds .ds-duo figcaption{font-size:13px;color:var(--ds-mute);margin-top:14px}html[data-theme="dark"] .ds .ds-duo img{filter:drop-shadow(0 20px 40px rgba(0,0,0,.6)) brightness(.92)}@media (max-width:640px){.ds .ds-duo{grid-template-columns:1fr 1fr}}
.ds .ds-nw{white-space:nowrap;display:inline-block}
/* layout helpers that used to be inline style attributes (the site's policy may drop those) */
.ds .ds-hero .ds-lead,.ds .ds-cta .ds-lead{margin-left:auto;margin-right:auto}.ds .ds-hero .ds-actions,.ds .ds-hero .ds-chips,.ds .ds-cta .ds-actions{justify-content:center}
.ds .ds-hero .ds-kick{margin-top:28px}.ds .ds-hero.ds-hero-tight{padding-bottom:24px}.ds .ds-sec.ds-pt0{padding-top:0}.ds .ds-sec.ds-pt24{padding-top:24px}.ds .ds-mt20{margin-top:20px}
.ds .ds-art.ds-art-wide{aspect-ratio:800/380;margin-bottom:20px}.ds .ds-g-auto{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.ds .ds-card.ds-card-sm{padding:24px}.ds .ds-card.ds-card-sm h3{font-size:17px;margin-top:14px}
.ds .ds-legal-wrap{max-width:760px}.ds .ds-sec.ds-legal{padding-top:56px}.ds .ds-legal h1{font-size:clamp(32px,4.6vw,48px)}.ds .ds-legal h2{margin:40px 0 12px}.ds .ds-legal p{margin-top:14px}

.ds .ds-pcard{display:flex;flex-direction:column;padding:28px 32px 26px}.ds .ds-pimg{display:grid;place-items:center;height:240px;margin:-6px -8px 18px;border-radius:var(--ds-r2);background:var(--ds-bg2)}.ds .ds-pimg img{max-width:72%;max-height:200px;object-fit:contain;filter:drop-shadow(0 20px 30px rgba(29,35,64,.14));transition:transform .5s var(--ds-ease)}.ds .ds-pcard:hover .ds-pimg img{transform:translateY(-4px) scale(1.02)}.ds .ds-pcard .ds-kick{margin:0 0 6px}.ds .ds-pcard h3{font-size:28px;margin:0 0 8px}.ds .ds-pcard .ds-actions{margin-top:auto;padding-top:22px}.ds .ds-hala{display:flex;align-items:center;gap:20px;padding:18px 24px;text-decoration:none}.ds .ds-hala img{width:64px;height:64px;border-radius:50%;object-fit:cover;flex:none}.ds .ds-hala>span:first-of-type{flex:1;display:grid;gap:4px}.ds .ds-hala b{color:var(--ds-ink);font-size:17px}.ds .ds-find{text-decoration:none;display:flex;flex-direction:column;gap:8px}.ds .ds-find h3{margin:0}.ds .ds-find .ds-link{margin-top:auto;font-size:15px}.ds .ds-case{display:flex;flex-direction:column}.ds .ds-case h3{margin:0 0 12px}.ds .ds-case .ds-actions{margin-top:auto;padding-top:20px}