.shennong-landing{--lime-50:#f7fee7;--lime-100:#ecfccb;--lime-200:#d9f99d;--lime-300:#bef264;--lime-400:#a3e635;--lime-500:#84cc16;--lime-600:#65a30d;--lime-700:#4d7c0f;--lime-800:#3f6212;--gold:#d9c200;--ink:#14170d;--ink-2:#3b4030;--muted:#71776a;--line:#e8e9e1;--bg:#fbfbf6;--card:#fff;--dark:#15200c;--dark-2:#1d2c11;--shadow-sm:0 1px 2px #14170d0a, 0 8px 24px #14170d0a;--shadow-md:0 4px 14px #14170d0f, 0 20px 48px #14170d14;--r-lg:24px;--r-md:16px;--r-sm:12px;--maxw:1120px;--disp:"Sora","Noto Sans SC",system-ui,sans-serif;--cjk:"Noto Sans SC","Sora",system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,monospace;font-family:var(--cjk);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;min-height:100dvh;caret-color:var(--lime-700);line-height:1.6;overflow-x:clip}.shennong-landing *{box-sizing:border-box;margin:0;padding:0}.shennong-landing a{color:inherit;text-decoration:none}.shennong-landing ::selection{background:var(--lime-300);color:var(--ink)}.shennong-landing a:focus-visible,.shennong-landing button:focus-visible{outline:2px solid var(--lime-600);outline-offset:3px}.shennong-landing .btn:focus-visible{outline-offset:4px}.shennong-landing footer a:focus-visible{outline-color:var(--lime-400)}@media (prefers-reduced-motion:no-preference){.shennong-landing{scroll-behavior:smooth}}.shennong-landing .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}.shennong-landing .eyebrow{font-family:var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--lime-700);font-size:12.5px;font-weight:500}.shennong-landing .chip{flex:none;place-items:center;display:inline-grid}.shennong-landing .chip img{object-fit:contain;width:100%;height:100%;display:block}.shennong-landing .announce{background:var(--ink);color:#dfe7d3;font-size:13.5px}.shennong-landing .announce-inner{text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;min-height:40px;padding:8px 0;display:flex}.shennong-landing .announce-dot{background:var(--lime-400);border-radius:50%;flex:none;width:7px;height:7px}.shennong-landing .announce a{color:var(--lime-300);border-bottom:1px solid #0000;margin-left:4px;font-weight:600;transition:border-color .15s,color .15s}.shennong-landing .announce a:hover{color:#fff;border-bottom-color:#fff6}.shennong-landing header.nav{z-index:50;-webkit-backdrop-filter:blur(16px);background:#fbfbf6c7;border-bottom:1px solid #0000;transition:background .3s,box-shadow .3s,border-color .3s;position:sticky;top:0}.shennong-landing header.nav.scrolled{border-bottom-color:var(--line);background:#fbfbf6f0;box-shadow:0 4px 24px #14170d0d}.shennong-landing .navrow{align-items:center;gap:40px;height:74px;display:flex}.shennong-landing .brand{font-family:var(--disp);letter-spacing:-.01em;align-items:center;gap:11px;font-size:21px;font-weight:800;display:flex}.shennong-landing .brand .chip{width:34px;height:34px}.shennong-landing .brand .api{color:var(--lime-600)}.shennong-landing nav.links{gap:30px;margin-left:8px;display:flex}.shennong-landing nav.links a{color:var(--ink-2);font-size:15px;font-weight:500;transition:color .15s}.shennong-landing nav.links a:hover{color:var(--ink)}.shennong-landing .nav-right{align-items:center;gap:16px;margin-left:auto;display:flex}.shennong-landing .nav-user{border:1px solid var(--line);box-sizing:border-box;background:#fff;border-radius:999px;align-items:center;gap:10px;max-width:220px;padding:5px 12px 5px 5px;transition:border-color .15s,box-shadow .15s;display:flex;overflow:hidden}.shennong-landing .nav-user:hover{border-color:var(--lime-300);box-shadow:var(--shadow-sm)}.shennong-landing .nav-user .uavatar{background:var(--lime-500);width:32px;height:32px;color:var(--ink);font-family:var(--disp);border-radius:50%;flex:none;place-items:center;font-size:14px;font-weight:800;display:grid}.shennong-landing .nav-user .umeta{flex-direction:column;min-width:0;line-height:1.25;display:flex}.shennong-landing .nav-user .uname{color:var(--ink);white-space:nowrap;text-overflow:ellipsis;font-size:13.5px;font-weight:700;overflow:hidden}.shennong-landing .nav-user .usub{color:var(--sn-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11.5px;overflow:hidden}.shennong-landing .nav-bal{font-family:var(--mono);color:var(--lime-700);background:var(--lime-50);border:1px solid var(--lime-200);border-radius:999px;padding:6px 11px;font-size:12.5px;font-weight:600;transition:background .15s}.shennong-landing .nav-bal:hover{background:var(--lime-100)}.shennong-landing .btn{font-family:var(--cjk);cursor:pointer;white-space:nowrap;border:1.5px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;font-weight:600;transition:transform .15s,background .2s,color .2s,border-color .2s,box-shadow .2s;display:inline-flex}.shennong-landing .btn:active{transform:translateY(1px)}.shennong-landing .btn-sm{padding:9px 18px;font-size:14.5px}.shennong-landing .btn-md{padding:13px 28px;font-size:15.5px}.shennong-landing .btn-lime{background:var(--lime-500);color:var(--ink)}.shennong-landing .btn-lime:hover{background:var(--lime-400)}.shennong-landing .btn-ink{background:var(--ink);color:#fff}.shennong-landing .btn-ink:hover{background:#252b18}.shennong-landing .btn-ghost{color:var(--ink);border-color:var(--line);background:0 0}.shennong-landing .btn-ghost:hover{border-color:var(--ink);background:#fff}.shennong-landing .hero{text-align:center;padding:72px 0 56px;position:relative;overflow:hidden}.shennong-landing .hero-glow{z-index:0;pointer-events:none;position:absolute;inset:0;overflow:hidden;-webkit-mask-image:radial-gradient(72% 68% at 50% 48%,#0000 52%,#000 92%);mask-image:radial-gradient(72% 68% at 50% 48%,#0000 52%,#000 92%)}.shennong-landing .hero-glow:before{content:"";filter:blur(36px);transform-origin:50%;will-change:transform;background:conic-gradient(#a3e63500,#a3e63557,#d9c20047,#a3e63500,#d9c20042,#a3e63552,#d9c20000,#a3e63500);position:absolute;inset:-40%}@media (prefers-reduced-motion:no-preference){.shennong-landing .hero-glow:before{animation:18s linear infinite sn-edge-flow}@keyframes sn-edge-flow{to{transform:rotate(360deg)}}}@media (prefers-reduced-motion:reduce){.shennong-landing .hero-glow{background:radial-gradient(55% 48% at 50% 0,#a3e63529,#0000 70%),radial-gradient(36% 40% at 88% 18%,#d9c20014,#0000 72%);-webkit-mask-image:none;mask-image:none}.shennong-landing .hero-glow:before{display:none}}.shennong-landing .hero-inner{z-index:1;width:100%;max-width:820px;margin:0 auto;position:relative}.shennong-landing .platform{color:var(--ink-2);letter-spacing:.02em;font-size:15px;font-weight:500}.shennong-landing .hero-mark{width:88px;height:88px;margin:22px auto 0}.shennong-landing .hero-mark img{object-fit:contain;width:100%;height:100%;display:block}.shennong-landing h1.head{font-family:var(--cjk);letter-spacing:-.02em;color:var(--ink);text-wrap:balance;margin:18px 0 0;font-size:clamp(32px,5vw,52px);font-weight:800;line-height:1.2}.shennong-landing .sub{max-width:36em;color:var(--ink-2);text-wrap:balance;margin:18px auto 0;font-size:clamp(16px,1.7vw,18px);font-weight:400;line-height:1.55}.shennong-landing .cta{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:32px;display:flex}.shennong-landing .trust{color:var(--muted);margin-top:22px;font-size:14px}.shennong-landing section.block{padding:88px 0}.shennong-landing .sec-head{text-align:center;max-width:680px;margin:0 auto}.shennong-landing .sec-head h2{font-family:var(--cjk);letter-spacing:-.02em;font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.15}.shennong-landing .sec-head .lead{color:var(--ink-2);text-wrap:pretty;margin-top:14px;font-size:17px}.shennong-landing .tool-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:44px;display:grid}.shennong-landing .tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);text-align:left;padding:22px 20px;transition:border-color .2s,box-shadow .2s,transform .2s}.shennong-landing .tool-card:hover{border-color:var(--lime-300);box-shadow:var(--shadow-sm);transform:translateY(-2px)}.shennong-landing .tool-card h3{font-family:var(--disp);letter-spacing:-.01em;margin-bottom:8px;font-size:17px;font-weight:700}.shennong-landing .tool-card p{color:var(--sn-muted);font-size:13.5px;line-height:1.55}.shennong-landing .sec-more{text-align:center;margin-top:28px}.shennong-landing .sec-more a{color:var(--lime-700);border-bottom:1px solid #0000;font-size:14.5px;font-weight:600;transition:color .15s,border-color .15s}.shennong-landing .sec-more a:hover{color:var(--lime-800);border-bottom-color:var(--lime-400)}.shennong-landing .start-block{padding-top:24px;padding-bottom:40px}.shennong-landing .start-grid{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:44px;display:grid}.shennong-landing .start-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);text-align:left;flex-direction:column;gap:14px;padding:28px 24px;display:flex}.shennong-landing .start-card-alt{background:linear-gradient(180deg,#fff 0%,var(--lime-50) 100%);border-color:var(--lime-200)}.shennong-landing .start-card h3{font-family:var(--disp);letter-spacing:-.01em;font-size:20px;font-weight:700}.shennong-landing .start-desc{color:var(--muted);font-size:14.5px}.shennong-landing .start-card .btn{align-self:flex-start;margin-top:4px}@media (prefers-reduced-motion:no-preference){.shennong-landing [data-fade]{animation:.7s cubic-bezier(.2,.7,.2,1) both sn-rise;animation-delay:calc(var(--d,0)*1ms)}@keyframes sn-rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}}@media print{.shennong-landing [data-fade]{animation:none}}.shennong-landing footer{background:var(--dark);color:#aeb9a0;margin-top:72px;padding:72px 0 40px}.shennong-landing .fgrid{grid-template-columns:1.6fr repeat(4,1fr);gap:36px;display:grid}.shennong-landing .fbrand .brand{color:#fff}.shennong-landing .fbrand p{color:#8b9779;max-width:280px;margin-top:16px;font-size:14px}.shennong-landing .fcol h4{color:#dfe7d3;font-size:14px;font-weight:700;font-family:var(--disp);margin-bottom:16px}.shennong-landing .fcol a{color:#9aa687;margin-bottom:11px;font-size:14px;transition:color .15s;display:block}.shennong-landing .fcol a:hover{color:var(--lime-400)}.shennong-landing .fbot{color:#7c8a64;font-size:13px;font-family:var(--mono);border-top:1px solid #ffffff14;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:54px;padding-top:26px;display:flex}@media (max-width:900px){.shennong-landing nav.links,.shennong-landing .nav-user .umeta,.shennong-landing .nav-bal{display:none}.shennong-landing .navrow{gap:12px}.shennong-landing .nav-right{flex-shrink:0;gap:10px;min-width:0}.shennong-landing .nav-user{max-width:none;box-shadow:none;background:0 0;border:none;padding:0}.shennong-landing .nav-user:hover{box-shadow:none;border-color:#0000}.shennong-landing .nav-user .uavatar{width:36px;height:36px}.shennong-landing .btn-sm{padding:8px 16px;font-size:14px}.shennong-landing .tool-grid{grid-template-columns:repeat(2,1fr)}.shennong-landing .start-grid{grid-template-columns:1fr}.shennong-landing .fgrid{grid-template-columns:1fr 1fr;gap:30px}.shennong-landing section.block{padding:64px 0}}@media (max-width:768px){.shennong-landing .wrap{padding:0 16px}.shennong-landing .navrow{gap:10px;height:64px}.shennong-landing .brand{min-width:0;font-size:18px}.shennong-landing .brand .chip{width:30px;height:30px}.shennong-landing .nav-right{gap:8px}.shennong-landing .btn-sm{padding:8px 14px;font-size:13.5px}.shennong-landing .announce{font-size:12.5px}.shennong-landing .announce-inner{text-align:left;justify-content:flex-start}.shennong-landing .hero{padding:48px 0 40px}.shennong-landing .hero-mark{width:72px;height:72px}.shennong-landing .btn-md{padding:12px 22px;font-size:15px}.shennong-landing .cta{gap:10px}.shennong-landing .tool-grid{grid-template-columns:1fr}.shennong-landing .start-card{padding:22px 18px}.shennong-landing footer{margin-top:48px;padding:56px 0 32px}}