:root{color-scheme:dark;--ink:#050608;--paper:#f4f1e9;--paper-2:#edf1ed;--text:#f7faf7;--muted:#aab5ad;--muted-dark:#4b5751;--line:rgba(255,255,255,0.14);--line-dark:rgba(9,18,15,0.14);--orange:#ff9a4d;--teal:#42d9c8;--green:#a6e36e;--violet:#a99cff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;color:var(--text);background:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:0}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit}
.site-header{position:sticky;top:0;z-index:30;display:grid;grid-template-columns:minmax(170px,1fr) auto minmax(210px,1fr);align-items:center;gap:18px;min-height:68px;padding:10px 30px;border-bottom:1px solid rgba(255,255,255,0.08);background:rgba(5,6,8,0.78);backdrop-filter:blur(22px)}
.brand,.header-actions,.site-header nav,.language-switch,.hero-actions,.hero-meta,.repo-links,.footer-proof,.footer-bottom{display:inline-flex;align-items:center}
.brand{gap:11px;width:fit-content;font-weight:820}
.brand img,.footer-logo img{width:34px;height:34px;border-radius:8px;flex:0 0 auto}
.site-header nav{justify-content:center;gap:3px}
.site-header nav a,.language-switch a{min-height:34px;padding:8px 12px;border-radius:8px;color:#c8d2cb;font-size:14px;font-weight:680}
.site-header nav a:hover,.site-header nav a:focus-visible,.language-switch a:hover,.language-switch a:focus-visible{background:rgba(255,255,255,0.09);color:#fff;outline:none}
.header-actions{justify-self:end;gap:10px}
.language-switch{padding:3px;border:1px solid rgba(255,255,255,0.13);border-radius:10px;background:rgba(255,255,255,0.055)}
.language-switch a{min-width:40px;text-align:center}
.language-switch .is-active{background:rgba(255,255,255,0.94);color:#080d13}
.header-cta,.primary-action,.secondary-action,.text-action{display:inline-flex;align-items:center;justify-content:center;min-height:46px;border-radius:8px;font-size:15px;font-weight:820;white-space:nowrap}
.header-cta{min-height:38px;padding:9px 14px;border:1px solid rgba(255,255,255,0.25);background:rgba(255,255,255,0.08);color:#fff}
.primary-action{padding:13px 19px;border:1px solid rgba(255,255,255,0.92);background:#f8fbff;color:#070b10;box-shadow:0 18px 54px rgba(255,255,255,0.12)}
.secondary-action{padding:13px 18px;border:1px solid rgba(255,255,255,0.19);background:rgba(255,255,255,0.065);color:#fff}
.text-action{min-height:0;color:#c0cac3}
.hero{position:relative;overflow:hidden;padding:56px 30px 42px;background:linear-gradient(112deg,rgba(255,154,77,0.16),transparent 38%),linear-gradient(248deg,rgba(66,217,200,0.13),transparent 34%),linear-gradient(180deg,#050608 0%,#090d0d 60%,#121611 100%)}
.hero-shell{width:min(1220px,100%);min-height:min(760px,calc(100svh - 170px));margin:0 auto;display:grid;grid-template-columns:minmax(0,0.88fr) minmax(430px,0.9fr);gap:54px;align-items:center}
.hero-copy,.hero-proof{min-width:0}
.hero-proof{display:grid;gap:18px}
.eyebrow,.section-label{margin:0;color:var(--green);font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:12px;font-weight:800;letter-spacing:0;text-transform:uppercase}
.hero h1{margin:18px 0 0;color:#fff;font-size:104px;line-height:0.9;letter-spacing:0}
.hero-kicker{max-width:760px;margin:24px 0 0;color:#f1f5f1;font-size:34px;font-weight:780;line-height:1.08;letter-spacing:0}
.hero-subtitle{max-width:640px;margin:18px 0 0;color:#c8d2cb;font-size:18px;line-height:1.58}
.hero-actions{flex-wrap:wrap;gap:12px 16px;margin-top:30px}
.hero-meta{flex-wrap:wrap;gap:8px 18px;margin-top:24px;color:#95a29a;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:12px;font-weight:760}
.hero-meta span{position:relative}
.hero-meta span+span::before{content:"";position:absolute;left:-10px;top:50%;width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,0.35)}
.product-film{position:relative;overflow:hidden;border-radius:8px;background:#080b10;box-shadow:0 46px 140px rgba(0,0,0,0.48)}
.product-film::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;border:1px solid rgba(255,255,255,0.15);border-radius:inherit}
.hero-video{width:100%;aspect-ratio:16/10;object-fit:cover;filter:saturate(1.04) contrast(1.03)}
.handoff-overlay{position:absolute;top:16px;left:50%;z-index:2;display:inline-flex;align-items:center;gap:10px;max-width:calc(100% - 32px);padding:9px 12px;border:1px solid rgba(255,255,255,0.16);border-radius:999px;background:rgba(7,9,13,0.78);box-shadow:0 12px 42px rgba(0,0,0,0.35);transform:translateX(-50%)}
.handoff-overlay span,.handoff-overlay strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.handoff-overlay span{color:#aeb9b1;font-size:12px;font-weight:800}
.handoff-overlay strong{color:#fff;font-size:13px;font-weight:880}
.state-rail{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(255,255,255,0.12);border-bottom:1px solid rgba(255,255,255,0.08)}
.state-step{display:grid;grid-template-columns:12px minmax(0,1fr);column-gap:9px;row-gap:3px;min-width:0;min-height:78px;padding:13px 12px;border:0;border-right:1px solid rgba(255,255,255,0.09);background:rgba(255,255,255,0.035);color:#9aa6a0;text-align:left;cursor:pointer}
.state-step:last-child{border-right:0}
.state-step span{grid-row:span 2;align-self:center;width:9px;height:9px;border-radius:50%;background:#4b5563}
.state-step strong,.state-step small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.state-step strong{font-size:12px;line-height:1.15;text-transform:uppercase}
.state-step small{font-size:11px}
.state-step.is-active{color:#fff;background:rgba(255,255,255,0.075)}
.state-step.is-active span{background:var(--orange);box-shadow:0 0 0 7px rgba(255,154,77,0.14),0 0 24px rgba(255,154,77,0.86)}
.section-inner{width:min(1160px,calc(100% - 48px));margin:0 auto}
.repo-proof,.trust-section{padding:108px 0;background:var(--paper);color:#0c1110}
.repo-layout,.story-layout,.surfaces-layout,.trust-layout{display:grid;grid-template-columns:minmax(0,0.86fr) minmax(340px,0.98fr);gap:64px;align-items:start}
.section-lead h2,.story-copy h2,.trust-layout h2{margin:14px 0 0;font-size:58px;line-height:0.98;letter-spacing:0}
.section-lead p:last-child,.story-copy p,.faq-section .section-lead p:last-child{margin:22px 0 0;color:var(--muted-dark);font-size:18px;line-height:1.68}
.repo-console{min-width:0;border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark)}
.repo-console-top{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;color:#26312d;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:12px;font-weight:760}
.repo-console-top span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.repo-console-top a,.repo-links a,.footer-proof a{display:inline-flex;align-items:center;justify-content:center;min-height:34px;border-radius:8px;font-size:13px;font-weight:820}
.repo-console-top a,.repo-links a{padding:8px 11px;border:1px solid rgba(9,18,15,0.18);background:rgba(255,255,255,0.42);color:#111a16}
.repo-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(9,18,15,0.12)}
.repo-stats a{min-width:0;padding:18px 16px 20px;border-right:1px solid rgba(9,18,15,0.12)}
.repo-stats a:last-child{border-right:0}
.repo-stats span{display:block;color:#5a665f;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:11px;font-weight:780;text-transform:uppercase}
.repo-stats strong{display:block;margin-top:6px;overflow:hidden;color:#0a110e;font-size:28px;font-weight:840;line-height:1;text-overflow:ellipsis;white-space:nowrap}
.hero-command{border-top:1px solid rgba(9,18,15,0.12);background:rgba(255,255,255,0.38)}
.hero-command>div{display:flex;align-items:center;gap:10px;min-height:42px;padding:0 15px;color:#5a665f;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:12px;font-weight:760}
.hero-command button{margin-left:auto;min-height:28px;padding:0 10px;border:1px solid rgba(9,18,15,0.18);border-radius:7px;background:#101612;color:#fff;font-size:12px;font-weight:760;cursor:pointer}
.hero-command pre{margin:0;padding:0 15px 17px;overflow-x:auto;color:#0d1511;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.65}
.hero-command code{white-space:pre-wrap;overflow-wrap:anywhere}
.repo-links{flex-wrap:wrap;gap:10px;padding:18px 0 0;border-top:1px solid rgba(9,18,15,0.12)}
.scroll-story{min-height:1060px;padding:118px 0;background:#0b0f0d}
.story-copy,.story-stage{position:sticky;top:112px}
.story-copy p{color:#b7c1ba}
.stage-panel{min-height:370px;padding:34px 0;border-top:1px solid rgba(255,255,255,0.13);border-bottom:1px solid rgba(255,255,255,0.1)}
.stage-index{color:var(--teal);font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:13px;font-weight:820}
.stage-panel h3{margin:104px 0 14px;font-size:48px;line-height:1}
.stage-panel p{max-width:580px;margin:0;color:#c0cac3;font-size:18px;line-height:1.65}
.stage-progress{height:5px;margin-top:18px;overflow:hidden;border-radius:999px;background:rgba(255,255,255,0.1)}
.stage-progress span{display:block;width:25%;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--orange),var(--teal),var(--violet));transition:width 260ms ease}
.surfaces-section,.faq-section{padding:102px 0;background:var(--paper-2);color:#0c1110}
.surface-stack{display:grid;gap:26px}
.surface-stack figure{margin:0;border-top:1px solid rgba(9,18,15,0.14)}
.surface-stack img{width:100%;aspect-ratio:1640/452;object-fit:cover;margin-top:18px;border-radius:8px;box-shadow:0 18px 55px rgba(10,16,24,0.08)}
.surface-stack figcaption{max-width:620px;padding:13px 0 0;color:#44504a;font-weight:720;line-height:1.5}
.boundary-list{display:grid;gap:0;margin:0;padding:0;border-top:1px solid rgba(9,18,15,0.13);list-style:none}
.boundary-list li{display:grid;grid-template-columns:minmax(130px,0.42fr) minmax(0,1fr);gap:20px;padding:19px 0;border-bottom:1px solid rgba(9,18,15,0.12);color:#26312d;line-height:1.55}
.boundary-list strong{color:#0a110e}
.boundary-list span{color:#4b5751}
.section-lead.wide{display:grid;grid-template-columns:minmax(0,0.92fr) minmax(320px,0.72fr);gap:44px;align-items:end}
.section-lead.wide .section-label{grid-column:1/-1}
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:52px;margin-top:42px;border-top:1px solid var(--line-dark)}
.faq-list article{min-width:0;padding:24px 0;border-bottom:1px solid rgba(9,18,15,0.12)}
.faq-list h3{margin:0;color:#0b1118;font-size:20px;line-height:1.25}
.faq-list p{margin:11px 0 0;color:#4b5751;font-size:15px;font-weight:620;line-height:1.62}
.site-footer{padding:56px 30px 34px;border-top:1px solid rgba(255,255,255,0.1);color:var(--muted);background:linear-gradient(112deg,rgba(255,154,77,0.08),transparent 34%),#050608}
.footer-shell{width:min(1160px,100%);margin:0 auto;display:grid;grid-template-columns:minmax(260px,0.82fr) minmax(0,1.18fr);gap:62px}
.footer-logo{display:inline-flex;align-items:center;gap:11px;width:fit-content;color:#fff;font-size:17px;font-weight:850}
.footer-brand p{max-width:420px;margin:22px 0 0;color:#b4beb7;font-size:16px;line-height:1.65}
.footer-proof{flex-wrap:wrap;gap:10px;margin-top:24px}
.footer-proof a{padding:8px 11px;border:1px solid rgba(255,255,255,0.16);background:rgba(255,255,255,0.055);color:#eef4ef}
.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;min-width:0}
.footer-links section{display:grid;align-content:start;gap:10px;min-width:0}
.footer-links h3{margin:0 0 6px;color:#fff;font-size:13px;font-weight:860;line-height:1.2}
.footer-links a,.footer-bottom a,.footer-bottom span{justify-self:start;max-width:100%;color:var(--muted);font-size:14px;font-weight:680;line-height:1.38;overflow-wrap:anywhere}
.footer-bottom{grid-column:1/-1;flex-wrap:wrap;justify-content:space-between;gap:12px 18px;padding-top:30px;margin-top:10px;border-top:1px solid rgba(255,255,255,0.12)}
.footer-links a:hover,.footer-links a:focus-visible,.footer-bottom a:hover,.footer-bottom a:focus-visible{color:#fff;outline:none}
.not-found{min-height:100svh;display:grid;place-items:center;background:linear-gradient(112deg,rgba(255,154,77,0.18),transparent 36%),linear-gradient(248deg,rgba(57,217,205,0.16),transparent 38%),#050608}
.not-found-page{width:min(560px,calc(100% - 40px));display:grid;gap:18px;justify-items:start}
.not-found-page img{width:42px;height:42px;border-radius:8px}
.not-found-page h1{margin:0;font-size:72px;line-height:0.92;letter-spacing:0}
.not-found-page p:not(.eyebrow){margin:0 0 8px;color:#c8d2df;font-size:18px;line-height:1.55}
html[data-lang="zh"] body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
html[data-lang="zh"] .hero-kicker,html[data-lang="zh"] .section-lead h2,html[data-lang="zh"] .story-copy h2,html[data-lang="zh"] .trust-layout h2,html[data-lang="zh"] .stage-panel h3{word-break:keep-all;overflow-wrap:normal;line-break:strict}
html[data-lang="zh"] .hero-subtitle,html[data-lang="zh"] .section-lead p,html[data-lang="zh"] .faq-list p,html[data-lang="zh"] .boundary-list span{word-break:normal;overflow-wrap:break-word;line-break:strict}
@media (max-width:1080px){.site-header{grid-template-columns:1fr auto}.site-header nav{display:none}.hero-shell,.repo-layout,.story-layout,.surfaces-layout,.trust-layout,.section-lead.wide,.footer-shell{grid-template-columns:1fr}.hero-shell{min-height:0}.hero-proof{max-width:760px}.hero h1{font-size:86px}.hero-kicker{font-size:32px}.story-copy,.story-stage{position:relative;top:auto}.scroll-story{min-height:auto}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:720px){.site-header{min-height:62px;padding:10px 16px}.brand span{display:none}.header-actions{gap:7px}.header-cta{max-width:150px;padding:8px 10px;overflow:hidden;text-overflow:ellipsis}.language-switch a{min-width:34px;min-height:30px;padding:7px 9px;font-size:13px}.hero{padding:34px 16px 30px}.hero-shell{gap:30px}.eyebrow,.section-label{font-size:11px}.hero h1{margin-top:14px;font-size:56px}.hero-kicker{margin-top:18px;font-size:25px;line-height:1.14}.hero-subtitle{font-size:16px}.hero-actions{align-items:stretch;flex-direction:column}.primary-action,.secondary-action{width:100%}.text-action{justify-content:flex-start}.handoff-overlay{top:10px;max-width:calc(100% - 20px)}.state-rail,.repo-stats,.faq-list{grid-template-columns:1fr}.state-step,.repo-stats a{border-right:0;border-bottom:1px solid rgba(255,255,255,0.09)}.repo-stats a{border-bottom-color:rgba(9,18,15,0.12)}.state-step:last-child,.repo-stats a:last-child{border-bottom:0}.repo-console-top{align-items:flex-start;flex-direction:column;padding:14px 0}.section-inner{width:min(calc(100% - 32px),1160px)}.repo-proof,.surfaces-section,.trust-section,.faq-section,.scroll-story{padding:74px 0}.section-lead h2,.story-copy h2,.trust-layout h2{font-size:38px}.stage-panel{min-height:300px;padding:28px 0}.stage-panel h3{margin-top:74px;font-size:34px}.boundary-list li{grid-template-columns:1fr;gap:7px}.site-footer{padding:42px 16px 30px}.footer-shell{gap:34px}.footer-links{grid-template-columns:1fr 1fr;gap:24px 18px}}
@media (max-width:390px){.hero h1{font-size:50px}.hero-kicker{font-size:23px}.header-cta{max-width:128px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:1ms !important;animation-iteration-count:1 !important;transition-duration:1ms !important}}