.sh-home{--sh-bg:#faf8f5;--sh-panel:#fffdfb;--sh-ink:#30272d;--sh-muted:#786b74;--sh-line:#e9e0e5;--sh-accent:#9d4969;--sh-soft:#f5e7ec;--sh-surface:#f1ece9;background:var(--sh-bg);color:var(--sh-ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;min-height:100vh;font-size:15px;line-height:1.6;overflow-wrap:anywhere}.dark .sh-home{--sh-bg:#141217;--sh-panel:#1b171e;--sh-ink:#f2eaf0;--sh-muted:#b4a5b0;--sh-line:#362b35;--sh-accent:#e7adc1;--sh-soft:#36212d;--sh-surface:#211b23}.sh-home *{box-sizing:border-box}.sh-home a{color:inherit;text-decoration:none}.sh-home button{font:inherit}.sh-home a:focus-visible,.sh-home button:focus-visible,.sh-home summary:focus-visible{outline:3px solid var(--sh-accent);outline-offset:4px}.sh-skip{position:fixed;top:-100px;left:16px;z-index:100;padding:10px 16px;background:var(--sh-panel);border:1px solid var(--sh-accent)}.sh-skip:focus{top:12px}.sh-header{position:sticky;top:0;z-index:50;background:var(--sh-bg);border-bottom:1px solid var(--sh-line)}.sh-header-inner{min-height:74px;max-width:1440px;margin:auto;padding:0 42px;display:flex;align-items:center;gap:28px}.sh-brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;font-size:17px;font-weight:650;letter-spacing:-.4px}.sh-brand img{object-fit:contain;border-radius:9px}.sh-desktop-nav{display:flex;flex:1;align-items:center;justify-content:center;gap:23px;min-width:0;flex-wrap:wrap;padding:10px 0}.sh-desktop-nav a{font-size:13px;color:var(--sh-muted);transition:color .15s;white-space:nowrap}.sh-desktop-nav a:hover{color:var(--sh-accent)}.sh-header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.sh-theme{background:none;border:1px solid var(--sh-line);border-radius:50%;height:34px;width:34px;cursor:pointer;color:var(--sh-ink);font-size:21px;display:grid;place-items:center}.sh-button{display:inline-flex;align-items:center;justify-content:center;gap:24px;background:var(--sh-ink);border:1px solid var(--sh-ink);color:var(--sh-bg)!important;border-radius:7px;min-height:48px;padding:11px 23px;font-size:14px;font-weight:600;transition:transform .15s,opacity .15s}.sh-button:hover{transform:translateY(-2px);opacity:.9}.sh-button-small{min-height:36px;padding:6px 16px;gap:14px;font-size:12px}.sh-button-quiet{background:transparent;color:var(--sh-ink)!important;border-color:var(--sh-line)}.sh-mobile-menu{display:none}.sh-hero{max-width:1320px;margin:auto;min-height:650px;padding:100px 52px 95px;display:grid;grid-template-columns:1.08fr 1fr;gap:90px;align-items:center}.sh-eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:var(--sh-accent);margin:0 0 22px;text-transform:uppercase}.sh-hero-copy>.sh-eyebrow{display:flex;align-items:center;gap:11px}.sh-dot{height:6px;width:6px;background:var(--sh-accent);border-radius:50%;display:inline-block}.sh-hero h1{font-size:clamp(38px,4.7vw,68px);line-height:1.2;letter-spacing:-2.2px;font-weight:600;margin:0 0 29px}.sh-hero h1 span{display:block;color:var(--sh-accent)}.sh-hero-intro{font-size:19px;line-height:1.65;margin:0 0 14px;max-width:510px;white-space:pre-wrap}.sh-hero-description{font-size:14px;color:var(--sh-muted);max-width:440px;line-height:1.9;margin:0}.sh-hero-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:31px}.sh-capabilities{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.sh-chip{font-size:11px;color:var(--sh-muted);display:inline-flex;align-items:center;gap:7px}.sh-chip:before{content:'✓';font-size:10px;color:var(--sh-accent)}.sh-route-card{border:1px solid var(--sh-line);border-radius:15px;background:var(--sh-panel);box-shadow:0 18px 65px #3b153008;overflow:hidden;transform:rotate(1deg)}.sh-card-top{display:flex;justify-content:space-between;align-items:center;padding:19px 24px;border-bottom:1px solid var(--sh-line);letter-spacing:1.5px;font:10px ui-monospace,monospace;color:var(--sh-muted)}.sh-card-tag{background:var(--sh-soft);color:var(--sh-accent);padding:4px 8px;border-radius:4px;letter-spacing:0;font:10px system-ui}.sh-orbit{height:218px;display:grid;place-items:center;position:relative;overflow:hidden;background-image:radial-gradient(var(--sh-line) .8px,transparent .8px);background-size:18px 18px}.sh-orbit-ring{width:235px;height:140px;border:1px solid var(--sh-line);border-radius:50%;transform:rotate(-17deg);position:absolute}.sh-orbit-ring:after{content:'';position:absolute;inset:-27px 19px;border:1px solid var(--sh-line);border-radius:50%;transform:rotate(54deg)}.sh-orbit-core{z-index:1;display:flex;flex-direction:column;align-items:center;gap:8px;background:var(--sh-panel);padding:15px 20px;border:1px solid var(--sh-line);border-radius:17px;box-shadow:0 6px 30px #3513230a;font-size:12px;font-weight:600}.sh-orbit-core img{object-fit:contain;border-radius:13px}.sh-protocol{position:absolute;padding:5px 11px;border:1px solid var(--sh-line);border-radius:6px;background:var(--sh-panel);font:10px ui-monospace,monospace;color:var(--sh-muted);z-index:2}.sh-protocol-a{left:9%;top:42px}.sh-protocol-b{right:7%;top:89px}.sh-protocol-c{left:17%;bottom:22px}.sh-endpoint{margin:0 23px;padding:14px 0;border-top:1px solid var(--sh-line);border-bottom:1px solid var(--sh-line);display:flex;align-items:center;gap:19px}.sh-endpoint>span{font:9px ui-monospace,monospace;letter-spacing:1px;color:var(--sh-muted);white-space:nowrap}.sh-endpoint code{font:11px ui-monospace,monospace;word-break:break-all}.sh-code-lines{padding:15px 24px 8px;display:grid;gap:9px}.sh-code-lines>div{display:flex;gap:17px;font:11px ui-monospace,monospace}.sh-code-lines>div>span{color:var(--sh-muted);opacity:.6}.sh-code-lines code{color:var(--sh-accent)}.sh-card-note{font-size:10px;color:var(--sh-muted);padding:0 24px 17px;margin:9px 0 0;line-height:1.6}.sh-manifesto{display:flex;justify-content:space-evenly;gap:25px;flex-wrap:wrap;max-width:1216px;margin:0 auto;padding:23px 30px;border-top:1px solid var(--sh-line);border-bottom:1px solid var(--sh-line);font-size:12px;letter-spacing:1px;color:var(--sh-muted)}.sh-manifesto span:before{content:'✦';color:var(--sh-accent);font-size:10px;margin-right:16px}.sh-section{max-width:1216px;margin:auto;padding:85px 40px;scroll-margin-top:94px}.sh-section-head{display:flex;align-items:flex-start;gap:25px;margin-bottom:37px}.sh-index{font:11px ui-monospace,monospace;color:var(--sh-muted);padding-top:4px;border-top:1px solid var(--sh-line);min-width:32px}.sh-section-head .sh-eyebrow{margin-bottom:12px;font-size:10px}.sh-section h2{font-size:34px;letter-spacing:-.8px;line-height:1.3;font-weight:550;margin:0}.sh-section-copy{color:var(--sh-muted);font-size:13px;margin:15px 0 0;line-height:1.8}.sh-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--sh-line);border-radius:10px;overflow:hidden}.sh-feature-grid article{padding:29px;border-right:1px solid var(--sh-line);background:var(--sh-panel)}.sh-feature-grid article:last-child{border:0}.sh-feature-symbol{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;background:var(--sh-soft);color:var(--sh-accent);font-size:22px;margin-bottom:22px}.sh-feature-grid h3,.sh-steps h3{font-size:16px;font-weight:600;margin:0 0 12px}.sh-feature-grid p,.sh-steps p,.sh-model-grid p:not(.sh-eyebrow){font-size:13px;color:var(--sh-muted);line-height:1.9;margin:0}.sh-access{border-top:1px solid var(--sh-line);border-bottom:1px solid var(--sh-line)}.sh-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;list-style:none;margin:0 0 30px;padding:0}.sh-steps li>span{font:11px ui-monospace,monospace;color:var(--sh-accent);display:block;margin-bottom:22px}.sh-model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.sh-model-grid article{background:var(--sh-surface);border:1px solid var(--sh-line);border-radius:10px;padding:30px}.sh-model-grid h3{font-size:24px;font-weight:550;letter-spacing:-.5px;margin:0 0 15px}.sh-text-link{display:inline-block;margin-top:27px;font-size:13px;color:var(--sh-accent)!important;border-bottom:1px solid var(--sh-accent);padding-bottom:4px}.sh-text-link:after{content:' ↗';margin-left:9px}.sh-final-cta{text-align:center;max-width:1216px;margin:auto;border-top:1px solid var(--sh-line);padding:64px 24px 80px}.sh-final-cta h2{font-size:35px;font-weight:500;letter-spacing:-1px;line-height:1.4;margin:0 0 25px}.sh-final-cta .sh-eyebrow{font-size:9px;letter-spacing:2.5px}.sh-footer{display:flex;align-items:center;justify-content:space-between;gap:25px;flex-wrap:wrap;border-top:1px solid var(--sh-line);max-width:1320px;margin:auto;padding:30px 52px}.sh-footer>div{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.sh-footer p,.sh-footer nav a{font-size:11px;color:var(--sh-muted)}.sh-footer nav{display:flex;gap:20px;flex-wrap:wrap}.sh-home ::selection{background:var(--sh-accent);color:var(--sh-bg)}@media(min-width:1500px){.sh-hero{min-height:710px}}@media(max-width:1050px){.sh-header-inner{padding:0 24px;gap:17px}.sh-desktop-nav{gap:15px}.sh-hero{gap:40px;padding:70px 35px}.sh-hero h1{font-size:48px}.sh-route-card{transform:none}.sh-section{padding:65px 32px}.sh-feature-grid article{padding:23px}.sh-header-actions{gap:6px}}@media(max-width:800px){.sh-desktop-nav{display:none}.sh-header-inner{min-height:68px;flex-wrap:wrap;padding:14px 20px;gap:10px}.sh-header-actions{margin-left:auto}.sh-mobile-menu{display:block;width:100%;border-top:1px solid var(--sh-line);padding-top:9px}.sh-mobile-menu>summary{font-size:12px;color:var(--sh-muted);cursor:pointer;list-style:none}.sh-mobile-menu>summary:after{content:'＋';float:right;color:var(--sh-accent)}.sh-mobile-menu[open]>summary:after{content:'−'}.sh-mobile-menu nav{display:flex;gap:11px 24px;flex-wrap:wrap;padding:15px 0 4px;font-size:13px}.sh-hero{grid-template-columns:1fr;gap:37px;padding:50px 28px 40px;min-height:0}.sh-hero h1{font-size:51px}.sh-hero-intro{font-size:18px}.sh-hero-description{max-width:560px}.sh-route-card{max-width:550px;width:100%;margin:auto}.sh-orbit{height:185px}.sh-manifesto{gap:12px;padding:20px 23px;justify-content:flex-start;font-size:11px}.sh-section{padding:52px 27px}.sh-section h2{font-size:29px}.sh-section-head{gap:15px}.sh-feature-grid{grid-template-columns:1fr}.sh-feature-grid article{border-right:0;border-bottom:1px solid var(--sh-line);padding:24px}.sh-feature-symbol{margin-bottom:12px}.sh-steps{gap:23px}.sh-steps p{font-size:12px}.sh-model-grid article{padding:23px}.sh-model-grid h3{font-size:21px}.sh-footer{padding:25px 27px}.sh-footer>div{gap:10px 22px}.sh-final-cta{padding:48px 25px}.sh-final-cta h2{font-size:30px}}@media(max-width:480px){.sh-brand{font-size:14px;gap:8px}.sh-brand img{width:29px;height:29px}.sh-header-inner{padding:12px 15px}.sh-header-actions{gap:5px}.sh-header-actions .sh-button-small{padding:6px 11px;gap:8px}.sh-theme{height:30px;width:30px;font-size:19px}.sh-hero{padding:42px 21px 35px}.sh-hero h1{font-size:clamp(34px,10.4vw,47px);letter-spacing:-1.4px;margin-bottom:23px}.sh-hero-intro{font-size:16px}.sh-hero-description{font-size:12px;line-height:1.9}.sh-hero-buttons{gap:9px;margin-top:24px}.sh-button{font-size:12px;gap:16px;padding:10px 15px;min-height:44px}.sh-button-small{min-height:33px}.sh-capabilities{gap:7px 13px;margin-top:22px}.sh-chip{font-size:10px}.sh-card-top{padding:15px 17px}.sh-endpoint{margin:0 17px;gap:11px}.sh-endpoint code{font-size:10px}.sh-code-lines{padding:15px 18px 7px}.sh-card-note{padding:0 18px 14px}.sh-orbit{height:185px}.sh-protocol-a{left:6%;top:30px}.sh-protocol-b{right:4%;top:77px}.sh-protocol-c{left:10%;bottom:17px}.sh-manifesto{font-size:10px;gap:10px;padding:19px 21px}.sh-manifesto span:before{margin-right:8px}.sh-section{padding:44px 21px}.sh-section h2{font-size:25px;letter-spacing:-.5px}.sh-section-head{gap:12px;margin-bottom:26px}.sh-index{min-width:25px;font-size:10px}.sh-section-copy{font-size:12px}.sh-steps{grid-template-columns:1fr;gap:23px}.sh-steps li{position:relative;padding-left:35px}.sh-steps li>span{position:absolute;left:0;top:3px}.sh-steps h3{font-size:15px;margin-bottom:6px}.sh-model-grid{grid-template-columns:1fr}.sh-model-grid article{padding:25px}.sh-final-cta h2{font-size:25px}.sh-footer{padding:25px 21px}.sh-footer nav{gap:12px 17px}.sh-header-actions>div{max-width:70px}}
/* Keep the first face at least one viewport tall; short screens can grow naturally. */
.sh-home{--sh-header-height:75px}
.sh-hero{position:relative;min-height:calc(100vh - var(--sh-header-height));grid-template-columns:minmax(0,1.08fr) minmax(0,1fr)}
.sh-hero-copy,.sh-route-card{min-width:0}
.sh-section{scroll-margin-top:calc(var(--sh-header-height) + 20px)}
.sh-scroll-cue{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:inline-flex;align-items:center;gap:10px;padding:5px 12px;color:var(--sh-muted)!important;font-size:10px;letter-spacing:1.5px;white-space:nowrap;border-radius:20px}
.sh-scroll-cue:hover{color:var(--sh-accent)!important}
.sh-scroll-mark{display:inline-block;font-size:16px;line-height:1}
@supports(min-height:100dvh){.sh-hero{min-height:calc(100dvh - var(--sh-header-height))}}
@media(max-width:800px){.sh-home{--sh-header-height:111px}.sh-hero{grid-template-columns:minmax(0,1fr);padding-bottom:82px}}
@media(max-width:480px){.sh-home{--sh-header-height:104px}.sh-hero{padding-bottom:76px}}
@media(prefers-reduced-motion:no-preference){
  .sh-hero-copy>*{animation:sh-enter .7s cubic-bezier(.22,1,.36,1) both}
  .sh-hero-copy>:nth-child(2){animation-delay:70ms}
  .sh-hero-copy>:nth-child(3){animation-delay:140ms}
  .sh-hero-copy>:nth-child(4){animation-delay:210ms}
  .sh-hero-copy>:nth-child(5){animation-delay:280ms}
  .sh-hero-copy>:nth-child(6){animation-delay:350ms}
  .sh-route-card{animation:sh-enter .9s cubic-bezier(.22,1,.36,1) 180ms both}
  .sh-scroll-cue{animation:sh-cue-enter .8s ease 650ms both}
  .sh-orbit-ring{animation:sh-orbit-turn 48s linear infinite}
  .sh-orbit-ring:before{content:'';position:absolute;top:17px;left:24px;width:5px;height:5px;border-radius:50%;background:var(--sh-accent);box-shadow:0 0 0 5px var(--sh-soft)}
  .sh-protocol{animation:sh-route-float 7s ease-in-out infinite}
  .sh-protocol-b{animation-delay:-2.3s}
  .sh-protocol-c{animation-delay:-4.6s}
  .sh-scroll-mark{animation:sh-scroll-drift 3s ease-in-out infinite}
  .sh-motion-paused .sh-orbit-ring,.sh-motion-paused .sh-protocol,.sh-motion-paused .sh-scroll-mark{animation-play-state:paused}
}
@keyframes sh-enter{from{opacity:0;translate:0 14px}to{opacity:1;translate:0 0}}
@keyframes sh-cue-enter{from{opacity:0}to{opacity:1}}
@keyframes sh-orbit-turn{from{transform:rotate(-17deg)}to{transform:rotate(343deg)}}
@keyframes sh-route-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes sh-scroll-drift{0%,65%,100%{transform:translateY(0)}35%{transform:translateY(4px)}}
@media(prefers-reduced-motion:reduce){.sh-home *,.sh-home *:before,.sh-home *:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.sh-button:hover{transform:none}}