.sgn{--sgn-ink:#0a0a0a;--sgn-paper:#ffffff;--sgn-mut:#6b6b6b;--sgn-line:#e8e8e8;--sgn-accent:#047857}.sgn.sgn-dark{--sgn-ink:#f5f5f5;--sgn-paper:#0a0a0a;--sgn-mut:#9a9a9a;--sgn-line:#232323;--sgn-accent:#34d399}.sgn{background:var(--sgn-paper);color:var(--sgn-ink);min-height:100vh}.sgn-wrap{max-width:1080px;margin:0 auto;padding:0 24px}.sgn-hero{padding:170px 0 72px;position:relative;overflow:hidden;background:#0a0a0f;min-height:100vh;display:flex;align-items:center}.sgn-hero-bg{position:absolute;inset:0;pointer-events:none}.sgn:not(.sgn-dark) header[class*=bg-transparent],.sgn:not(.sgn-dark) header[class*=bg-transparent] .nav-link{color:#f5f5f5}.sgn:not(.sgn-dark) header[class*=bg-transparent] img{filter:invert(1)}.sgn:not(.sgn-dark) header[class*=bg-transparent] .dark-mode-toggle,.sgn:not(.sgn-dark) header[class*=bg-transparent] .lang-toggle{border-color:rgba(255,255,255,.3)!important}.sgn-hero-fg{position:relative;z-index:1;width:100%;display:flex;align-items:center;justify-content:space-between;gap:48px}.sgn-hero-copy{max-width:640px}.sgn-hero-demo{flex-shrink:0;padding-right:24px}@media (max-width:1023px){.sgn-hero-demo{display:none}}.sgn-hero .sgn-eyebrow{color:#ff4e20}.sgn-hero .sgn-h1{color:#f5f5f5;text-shadow:0 2px 24px rgba(10,10,15,.7)}.sgn-hero .sgn-lead{color:#c9c9d4;text-shadow:0 1px 12px rgba(10,10,15,.8)}.sgn-hero .sgn-pill{background:#f5f5f5;color:#0a0a0f}.sgn-hero .sgn-pill.ghost{background:rgba(10,10,15,.55);color:#f5f5f5;border-color:#3a3a46;backdrop-filter:blur(2px)}.sgn-h1 .split-parent{line-height:1.02;vertical-align:bottom}.sgn-chips{display:flex;gap:10px;flex-wrap:wrap;margin:-12px 0 30px}.sgn-chip{border:1px solid var(--sgn-line);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--sgn-mut);background:color-mix(in srgb,var(--sgn-paper) 82%,transparent);backdrop-filter:blur(2px)}.sgn-hero .sgn-chip{border-color:#3a3a46;color:#c9c9d4;background:rgba(10,10,15,.55)}.sgn-eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--sgn-mut);margin-bottom:18px}.sgn-h1{font-size:clamp(40px,7vw,76px);line-height:1.02;font-weight:800;letter-spacing:-.02em;margin:0 0 22px}.sgn-h1 .thin{font-weight:300}.sgn-lead{font-size:19px;line-height:1.55;color:var(--sgn-mut);max-width:640px;margin:0 0 32px}.sgn-pill{display:inline-flex;align-items:center;gap:8px;background:var(--sgn-ink);color:var(--sgn-paper);border-radius:999px;padding:14px 26px;font-weight:600;font-size:15px;text-decoration:none;transition:transform .15s ease}.sgn-pill:hover{transform:translateY(-1px)}.sgn-pill.ghost{background:transparent;color:var(--sgn-ink);border:1.5px solid var(--sgn-line);margin-left:12px}.sgn-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:40px 0 8px}@media (max-width:800px){.sgn-steps{grid-template-columns:1fr}}.sgn-step{border:1px solid var(--sgn-line);border-radius:16px;padding:26px 22px}.sgn-step .n{font-size:13px;font-weight:700;color:var(--sgn-accent);letter-spacing:.14em}.sgn-step h3{font-size:20px;font-weight:700;margin:10px 0 8px}.sgn-step p{font-size:14.5px;line-height:1.6;color:var(--sgn-mut);margin:0}.sgn-band{border-top:1px solid var(--sgn-line);border-bottom:1px solid var(--sgn-line);padding:44px 0;margin:48px 0}.sgn-band h2{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.01em;margin:0 0 24px}.sgn-feats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 32px}@media (max-width:800px){.sgn-feats{grid-template-columns:1fr}}.sgn-feat{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.55}.sgn-feat .tick{flex-shrink:0;margin-top:2px}.sgn-feat .tick-path{stroke:var(--sgn-accent)}.sgn-feat b{display:block}.sgn-feat span{color:var(--sgn-mut);font-size:14px}.sgn-eyebrow{font-family:ui-monospace,SFMono-Regular,monospace}.sgn-eyebrow:before{content:"[ ";opacity:.5}.sgn-eyebrow:after{content:" ]";opacity:.5}.sgn-marquee{border-bottom:1px solid var(--sgn-line);padding:14px 0;font-family:ui-monospace,SFMono-Regular,monospace;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--sgn-mut);background:var(--sgn-paper)}.sgn-try{padding:8px 0 40px}.sgn-try-sub{color:var(--sgn-mut);font-size:15px;max-width:560px;margin:0 0 22px;line-height:1.6}.ts-card{border:1px solid var(--sgn-line);border-radius:16px;background:var(--sgn-paper);box-shadow:0 18px 44px rgba(0,0,0,.08);max-width:640px}.sgn-dark .ts-card{background:#ffffff}.ts-area{position:relative;height:210px}.ts-canvas{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair;touch-action:none;border-radius:16px 16px 0 0}.ts-hint{left:0;right:0;top:44%;text-align:center;color:#b3b3b3;font-size:14px}.ts-hint,.ts-line{position:absolute;pointer-events:none}.ts-line{left:32px;right:32px;bottom:44px;border-bottom:1.5px dashed #c9c9c9}.ts-stamp{position:absolute;right:28px;top:26px;border:2.5px solid #047857;color:#047857;border-radius:8px;padding:6px 14px;font-weight:800;font-size:14px;pointer-events:none;background:rgba(255,255,255,.85)}.ts-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;border-top:1px solid #ececec}.ts-signed{font-size:13px;color:#047857;font-weight:600;min-height:1em;opacity:0;transition:opacity .3s}.ts-signed.on{opacity:1}.ts-clear{border:1px solid #d9d9d9;background:transparent;color:#6b6b6b;border-radius:999px;padding:6px 16px;font-size:13px;cursor:pointer}.ts-clear:hover{border-color:#0a0a0a;color:#0a0a0a}.sgn-final{text-align:center;padding:24px 0 96px}.sgn-final h2{font-size:clamp(28px,5vw,48px);font-weight:800;margin:0 0 24px}.sgn-fine{font-size:12.5px;color:var(--sgn-mut);margin-top:18px}