@import "https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,700&family=Source+Sans+3:wght@400;500;600;700&display=swap";:root{--bg:#f7fcfd;--panel:#fff;--text:#163a42;--muted:#6b8d94;--accent:#1a8aab;--accent-2:#3ec5e8;--border:#d3eaef;--rule:#c5e0e6;--shadow:0 36px 80px #1a8aab1f;--font-display:"Fraunces", "Songti SC", "SimSun", serif;--font-body:"Source Sans 3", "PingFang SC", "Microsoft YaHei", sans-serif;--max:1240px;--pad:clamp(24px, 5vw, 72px)}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;color:var(--text);font-family:var(--font-body);background:radial-gradient(80% 40% at 50% -8%,#3ec5e81a,#0000 55%),#fff;margin:0}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.site{min-height:100vh}.site-welcome{isolation:isolate;background:radial-gradient(90% 70% at 50% 48%,#eef9fc 0%,#f8fdfe 55%,#fff 78%);flex-direction:column;justify-content:center;align-items:center;min-height:100dvh;padding:88px 0 72px;display:flex;position:relative;overflow:hidden}.site-welcome-mesh{z-index:0;pointer-events:none;background:radial-gradient(55% 50% at 50% 42%,#3ec5e824,#0000 72%),radial-gradient(40% 36% at 78% 70%,#1a8aab14,#0000 70%);animation:22s ease-in-out infinite mesh-drift;position:absolute;inset:-20%}.site-welcome-rings{z-index:0;aspect-ratio:1;pointer-events:none;width:min(142%,78vmin);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.site-welcome-rings i{border:1px solid #3ec5e852;border-radius:50%;animation:7s ease-out infinite ring-expand;position:absolute;inset:0}.site-welcome-rings i:nth-child(2){animation-delay:2.3s}.site-welcome-rings i:nth-child(3){animation-delay:4.6s}.site-welcome-bar{z-index:2;padding:28px var(--pad);align-items:center;gap:22px;animation:1s .2s both welcome-rise;display:flex;position:absolute;top:0;right:0}.site-welcome-download{color:var(--muted);font-size:.95rem}.site-welcome-download:hover{color:var(--text)}.site-welcome-inner{z-index:1;text-align:center;width:min(92vw,1400px);padding:0 24px;position:relative}.site-welcome-stage{display:inline-block;position:relative}.site-welcome-halo{z-index:0;aspect-ratio:1;border:1px solid #1a8aab73;border-radius:50%;width:min(142%,78vmin);animation:1.4s .2s both halo-in;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.site-welcome-brand{z-index:1;font-family:var(--font-display);letter-spacing:-.06em;margin:0;font-size:clamp(3.2rem,11.5vw,12rem);font-weight:700;line-height:.92;position:relative}.site-welcome-brand span{color:#163a42;animation:1.15s cubic-bezier(.16,1,.3,1) both letter-in;display:inline-block}.site-welcome-brand span.is-accent{color:#3ec5e8}.site-welcome-line{color:#6b8d94;letter-spacing:.28em;text-indent:.28em;margin:20px 0 0;font-size:clamp(.86rem,1.2vw,1rem);font-weight:500;animation:1.2s 1.05s both welcome-rise}.site-welcome-scroll-wrap{z-index:1;position:absolute;bottom:36px;left:50%;transform:translate(-50%)}.site-welcome-scroll{color:#1a8aab;animation:1s 1.8s both welcome-rise,1.35s ease-in-out 2.6s infinite scroll-nudge;display:flex}.site-welcome-scroll svg{width:28px;height:34px}.site-welcome-chevron.is-top{animation:1.35s ease-in-out 2.6s infinite chevron-flash}.site-welcome-chevron.is-bottom{animation:1.35s ease-in-out 2.82s infinite chevron-flash}@keyframes welcome-rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes letter-in{0%{opacity:0;transform:translateY(12%)}to{opacity:1;transform:none}}@keyframes ring-expand{0%{opacity:.28;transform:scale(1)}to{opacity:0;transform:scale(1.85)}}@keyframes halo-in{0%{opacity:0;transform:translate(-50%,-50%)scale(.92)}to{opacity:1;transform:translate(-50%,-50%)scale(1)}}@keyframes mesh-drift{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@keyframes scroll-nudge{0%,to{transform:translateY(0)}50%{transform:translateY(10px)}}@keyframes chevron-flash{0%,to{opacity:.18}35%{opacity:1}}@media (prefers-reduced-motion:reduce){.site-welcome-brand span,.site-welcome-line,.site-welcome-bar,.site-welcome-scroll,.site-welcome-chevron,.site-welcome-rings i,.site-welcome-halo,.site-welcome-mesh{animation:none}}.site-nav{z-index:20;padding:16px var(--pad);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--border);background:#ffffffe0;align-items:center;gap:40px;display:flex;position:sticky;top:0}.site-brand{font-family:var(--font-display);letter-spacing:-.04em;font-size:1.5rem;font-weight:700}.site-nav-links{color:var(--muted);gap:22px;font-size:.96rem;display:flex}.site-nav-links a:hover{color:var(--text)}.site-nav-actions{align-items:center;gap:16px;margin-left:auto;display:flex}.site-lang{font:inherit;cursor:pointer;color:var(--muted);background:0 0;border:0;padding:0;font-size:.95rem}.site-lang:hover{color:var(--text)}.site-nav-download{background:var(--accent);color:#fff;border-radius:8px;align-items:center;min-height:38px;padding:0 16px;font-size:.92rem;font-weight:600;display:inline-flex}.site-nav-download:hover{background:color-mix(in srgb, var(--accent-2) 30%, var(--accent))}.site-hero{max-width:calc(var(--max) + 40px);padding:clamp(56px, 9vh, 104px) var(--pad) clamp(48px, 8vh, 88px);text-align:center;margin:0 auto}.site-eyebrow{color:var(--accent-2);letter-spacing:.16em;margin:0 0 16px;font-size:.9rem;font-weight:600}.site-hero h1{font-family:var(--font-display);letter-spacing:-.04em;word-break:keep-all;margin:0 auto 20px;font-size:clamp(2.6rem,6vw,4.8rem);font-weight:700;line-height:1.1}.site-lead{max-width:34em;color:var(--muted);margin:0 auto;font-size:clamp(1.05rem,1.4vw,1.18rem);line-height:1.75}.site-cta{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:32px;display:flex}.site-btn{border-radius:8px;justify-content:center;align-items:center;min-height:48px;padding:0 22px;font-size:1rem;font-weight:600;transition:background .15s,border-color .15s;display:inline-flex}.site-btn-lg{min-height:54px;padding:0 26px}.site-btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}.site-btn-primary:hover{background:color-mix(in srgb, var(--accent-2) 28%, var(--accent))}.site-btn-ghost{border:1px solid var(--rule);color:var(--text);background:#fff}.site-btn-ghost:hover{border-color:color-mix(in srgb, var(--text) 24%, var(--rule))}.site-hero-hint{color:var(--muted);letter-spacing:.04em;margin:16px 0 0;font-size:.9rem}.site-hero-visual{border:1px solid var(--border);box-shadow:var(--shadow);background:#eef9fc;border-radius:16px;margin:48px auto 0;overflow:hidden}.site-hero-visual img{width:100%;height:auto}.site-stats{grid-template-columns:repeat(4,minmax(0,1fr));max-width:1040px;margin:48px auto 0;padding:0;list-style:none;display:grid}.site-stats li{text-align:center;padding:8px 16px}.site-stats li+li{border-left:1px solid var(--rule)}.site-stats strong{font-family:var(--font-display);letter-spacing:-.03em;font-size:1.28rem;font-weight:500;display:block}.site-stats span{color:var(--muted);margin-top:6px;font-size:.92rem;display:block}.site-features{max-width:var(--max);padding:clamp(32px, 6vh, 64px) var(--pad) 0;margin:0 auto}.site-section-head{margin-bottom:clamp(36px,5vh,56px)}.site-section-head h2,.site-showcase-copy h3,.site-download h2{font-family:var(--font-display);letter-spacing:-.03em;word-break:keep-all;margin:0;font-weight:500;line-height:1.2}.site-section-head h2{font-size:clamp(2rem,3.6vw,2.9rem)}.site-section-head-center{text-align:center}.site-kicker{color:var(--accent-2);letter-spacing:.16em;margin:0 0 10px;font-size:.8rem;font-weight:600}.site-showcase{border-top:1px solid var(--rule);grid-template-columns:minmax(0,.92fr) minmax(0,1.18fr);align-items:center;gap:clamp(28px,4vw,64px);padding:clamp(40px,7vh,80px) 0;display:grid}.site-showcase.is-flip .site-showcase-copy{order:2}.site-showcase.is-flip .site-showcase-visual{order:1}.site-showcase-copy h3{margin-bottom:28px;font-size:clamp(1.7rem,2.6vw,2.25rem)}.site-showcase-points{gap:22px;display:grid}.site-showcase-points span{color:var(--accent-2);font-family:var(--font-display);margin-bottom:6px;font-size:.92rem;display:block}.site-showcase-points h4{letter-spacing:-.02em;margin:0 0 6px;font-size:1.12rem}.site-showcase-points p{color:var(--muted);margin:0;line-height:1.65}.site-showcase-visual{min-width:0;margin:0}.site-showcase-visual img{border:1px solid var(--border);background:#eef9fc;border-radius:14px;width:100%;height:auto;box-shadow:0 20px 48px #1a8aab1a}.site-section{max-width:var(--max);padding:clamp(64px, 10vh, 112px) var(--pad) 0;margin:0 auto}.site-section-lead{text-align:left;max-width:38em;margin:16px 0 0}.site-section-render{padding-bottom:clamp(24px,4vh,40px)}.site-mosaic{grid-template-columns:1fr 1fr;gap:18px;display:grid}.site-mosaic-item{border:1px solid var(--border);background:var(--panel);border-radius:14px;flex-direction:column;min-width:0;margin:0;display:flex;overflow:hidden;box-shadow:0 20px 48px #1a8aab14}.site-mosaic-item.is-wide{grid-column:1/-1}.site-mosaic-item img{width:100%;height:auto;display:block}.site-mosaic-item figcaption{border-top:1px solid var(--border);flex-direction:column;gap:4px;padding:14px 16px 16px;display:flex}.site-mosaic-item figcaption span{color:var(--accent-2);letter-spacing:.14em;font-size:.75rem;font-weight:600}.site-mosaic-item figcaption strong{letter-spacing:-.02em;font-size:1.02rem;font-weight:600}.site-theme{padding:clamp(56px, 9vh, 96px) var(--pad);color:#e8f1f4;background:radial-gradient(70% 80% at 80% 20%,#3ec5e81f,#0000 55%),#161d22;margin-top:clamp(48px,8vh,80px)}.site-theme-inner{max-width:var(--max);grid-template-columns:minmax(0,.88fr) minmax(0,1.22fr);align-items:center;gap:clamp(28px,4vw,56px);margin:0 auto;display:grid}.site-theme .site-kicker{color:#7ad4ea}.site-theme h2{font-family:var(--font-display);letter-spacing:-.03em;word-break:keep-all;margin:0 0 16px;font-size:clamp(2rem,3.6vw,2.9rem);font-weight:500;line-height:1.2}.site-theme .site-lead{color:#9bb4bb;margin:0}.site-theme-points{gap:18px;margin:28px 0 0;padding:0;list-style:none;display:grid}.site-theme-points strong{margin-bottom:4px;font-size:1.05rem;display:block}.site-theme-points span{color:#9bb4bb;line-height:1.6}.site-theme-visual{margin:0}.site-theme-visual img{border:1px solid #ffffff14;border-radius:14px;width:100%;height:auto;box-shadow:0 28px 64px #00000059}.site-syntax-row{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start;gap:clamp(24px,4vw,48px);display:grid}.site-syntax-visual{margin:0}.site-syntax-visual img{border:1px solid var(--border);background:#eef9fc;border-radius:14px;width:100%;height:auto;box-shadow:0 20px 48px #1a8aab1a}.site-syntax-row .site-engine-list{grid-template-columns:1fr;gap:0}.site-section-engines{padding-bottom:clamp(48px,8vh,80px)}.site-engine-list{grid-template-columns:1fr 1fr;gap:0 48px;margin:0;padding:0;list-style:none;display:grid}.site-engine-list li{border-top:1px solid var(--rule);padding:28px 0}.site-engine-list strong{margin-bottom:14px;font-size:1.02rem;display:block}.site-engine-chips{flex-wrap:wrap;gap:8px;display:flex}.site-engine-chips span{color:var(--text);background:#e7f6fa;border-radius:999px;padding:6px 12px;font-size:.92rem}.site-download{text-align:center;padding:clamp(72px, 12vh, 120px) var(--pad);border-top:1px solid var(--border);background:radial-gradient(70% 80% at 50% 0,#3ec5e81a,#0000 60%),linear-gradient(#f7fcfd 0%,#eef7fa 100%)}.site-download h2{margin:0 0 14px;font-size:clamp(2.4rem,4.6vw,3.8rem);font-weight:700}.site-download .site-lead{margin-bottom:32px}.site-download-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.site-download-actions .site-btn{flex-direction:column;min-width:240px;height:auto;min-height:54px;padding:12px 26px}.site-download-size{opacity:.85;margin-top:4px;font-size:.78rem;font-weight:500;display:block}.site-download-meta,.site-download-note{max-width:36em;color:var(--muted);margin:18px auto 0;font-size:.95rem}.site-footer{padding:28px var(--pad) 40px;border-top:1px solid var(--border);color:var(--muted);background:#fff;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:.95rem;display:flex}.site-footer strong{color:var(--text);font-family:var(--font-display);margin-bottom:4px;font-size:1.2rem;display:block}.site-footer-links{align-items:center;gap:20px;display:flex}@media (width<=960px){.site-nav-links{display:none}.site-stats,.site-engine-list,.site-showcase,.site-mosaic,.site-theme-inner,.site-syntax-row{grid-template-columns:1fr}.site-mosaic-item.is-wide{grid-column:auto}.site-stats li+li{border-left:0;border-top:1px solid var(--rule);margin-top:16px;padding:20px 0 0}.site-showcase.is-flip .site-showcase-copy,.site-showcase.is-flip .site-showcase-visual{order:unset}.site-hero{padding-top:40px}}