:root{--color-bg: #ffffff;--color-bg-soft: #f7f7f8;--color-text: #1c1c1e;--color-text-soft: #55555a;--color-border: #e3e3e6;--color-accent: #2563eb;--color-accent-soft: #eef2ff;--color-error: #d92d20;--radius: 10px;--max-width: 1100px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--color-accent)}img{max-width:100%}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--color-border);background:var(--color-bg);position:sticky;top:0;z-index:10}.site-header__inner{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;max-width:var(--max-width);margin:0 auto;gap:16px;flex-wrap:wrap}.brand{display:flex;flex-direction:column;gap:2px}.brand__name{font-weight:700;font-size:1.15rem;color:var(--color-text);text-decoration:none}.brand__tagline{font-size:.85rem;color:var(--color-text-soft)}.site-nav{display:flex;gap:8px;flex-wrap:wrap}.button{display:inline-block;padding:10px 18px;border-radius:var(--radius);text-decoration:none;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer}.button--primary{background:var(--color-accent);color:#fff}.button--primary:hover{background:#1d4ed8}.button--ghost{background:transparent;color:var(--color-accent);border-color:var(--color-border)}.button--ghost:hover{background:var(--color-accent-soft)}.hero{padding:56px 0 32px}.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:0 0 12px}.hero p{color:var(--color-text-soft);font-size:1.05rem;max-width:640px}.hero__actions{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap}section{padding:32px 0}section h2{font-size:1.5rem;margin-bottom:8px}.section-lead{color:var(--color-text-soft);margin-bottom:24px;max-width:640px}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.card{background:var(--color-bg-soft);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px}.card h3{margin:0 0 8px;font-size:1.05rem}.card p{margin:0;color:var(--color-text-soft);font-size:.95rem}.viewer-embed{border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;background:var(--color-bg-soft)}.viewer-embed iframe{width:100%;height:480px;border:0;display:block}.contact-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.site-footer{border-top:1px solid var(--color-border);padding:24px 0 40px;color:var(--color-text-soft);font-size:.85rem}.viewer-page{display:flex;flex-direction:column;min-height:100vh}.viewer-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 20px;border-bottom:1px solid var(--color-border);background:var(--color-bg)}.viewer-toolbar__group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.viewer-toolbar label{font-size:.85rem;color:var(--color-text-soft);font-weight:600}.viewer-toolbar select,.viewer-toolbar input[type=file]{font:inherit;padding:8px 10px;border-radius:8px;border:1px solid var(--color-border);background:#fff;max-width:100%}.viewer-toolbar .back-link{font-size:.9rem;font-weight:600;text-decoration:none;color:var(--color-text-soft)}.viewer-toolbar .back-link:hover{color:var(--color-accent)}#status{font-size:.85rem;color:var(--color-text-soft);margin-left:auto}.status--error{color:var(--color-error)}#canvas-wrap{flex:1 1 auto;position:relative;min-height:320px}#canvas-wrap canvas{display:block;width:100%;height:100%}.viewer-hint{padding:10px 20px;font-size:.8rem;color:var(--color-text-soft);border-top:1px solid var(--color-border);background:var(--color-bg-soft)}@media (max-width: 640px){.site-header__inner{flex-direction:column;align-items:flex-start}#status{margin-left:0;width:100%}.viewer-embed iframe{height:320px}}