:root{--p:#4f46e5;--p2:#0ea5e9;--bg:#f8fafc;--surf:#fff;--bd:#e2e8f0;--tx:#0f172a;--mut:#64748b;--ok:#059669;--err:#dc2626;--sh:0 10px 30px rgba(15,23,42,.08)}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--tx);line-height:1.65}
a{color:var(--p)}main{max-width:1120px;margin:0 auto;padding:24px 18px 48px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.site-header{background:#fff;border-bottom:1px solid var(--bd);position:sticky;top:0;z-index:50;box-shadow:0 1px 8px rgba(15,23,42,.04)}
.nav{max-width:1120px;margin:0 auto;padding:12px 18px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.logo{font-size:1.35rem;font-weight:800;color:var(--p);text-decoration:none;display:inline-flex;align-items:center;gap:8px}.logo span{color:var(--tx)}.logo-mark{width:30px;height:30px;flex:none;display:block}
.nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center}.nav-links>a{color:var(--tx);text-decoration:none;font-size:.92rem;font-weight:600}
.nav-group{position:relative}
.nav-group-btn{background:none;border:0;font:inherit;font-size:.92rem;font-weight:600;color:var(--tx);cursor:pointer;padding:4px 2px}
.nav-menu{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--bd);border-radius:12px;box-shadow:var(--sh);padding:8px;min-width:230px;z-index:60}
.nav-menu a{display:block;color:var(--tx);text-decoration:none;font-size:.9rem;font-weight:500;padding:7px 10px;border-radius:8px}
.nav-menu a:hover{background:#eef2ff;color:var(--p)}
.nav-group:hover .nav-menu,.nav-group:focus-within .nav-menu,.nav-group.open .nav-menu{display:block}
.hero{text-align:center;padding:38px 10px 10px}.hero h1{font-size:clamp(1.9rem,5vw,3rem);margin:.2em 0;line-height:1.2}.hero p{color:var(--mut);max-width:720px;margin:0 auto}
.hero .badge{display:inline-block;background:#eef2ff;color:var(--p);font-weight:700;font-size:.82rem;padding:4px 12px;border-radius:999px;margin-bottom:10px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:20px 0}
.card{background:var(--surf);border:1px solid var(--bd);border-radius:16px;padding:18px;text-decoration:none;color:var(--tx);display:block;transition:border-color .15s,box-shadow .15s,transform .15s}
.card:hover{border-color:var(--p);box-shadow:var(--sh);transform:translateY(-2px)}.card h3{margin:.35em 0;color:var(--tx)}.card p{color:var(--mut);margin:.2em 0;font-size:.94rem}
.ico{font-size:1.7rem;color:var(--p);line-height:1}.ico svg{width:30px;height:30px;display:block}
.card svg{width:34px;height:34px;flex:none}
.cat-title{margin:30px 0 4px;font-size:1.35rem}
.tool{background:var(--surf);border:1px solid var(--bd);border-radius:16px;padding:22px;margin:18px 0;box-shadow:0 2px 10px rgba(15,23,42,.03)}
.tool label{font-weight:600;display:block;margin:14px 0 4px}.tool input,.tool select,.tool button{font:inherit;padding:10px;border-radius:10px;border:1px solid var(--bd)}
.tool input[type=number],.tool input[type=text]{width:100%;max-width:340px}
.tool input[type=range]{width:100%;max-width:420px;padding:0;border:0;accent-color:var(--p)}
.tool button{background:var(--p);color:#fff;border:0;cursor:pointer;font-weight:700;padding:12px 22px;border-radius:10px}
.tool button:hover{background:#4338ca}.tool button:disabled{opacity:.5;cursor:wait}
.drop{border:2px dashed #c7d2fe;border-radius:14px;padding:30px 20px;text-align:center;color:var(--mut);background:#f5f7ff;cursor:pointer;transition:border-color .15s,background .15s}
.drop strong{color:var(--tx);font-size:1.05rem}
.drop:hover{border-color:var(--p)}
.drop.drag{border-color:var(--p);background:#eef2ff;color:var(--tx)}
.file-name{font-weight:600;margin:10px 0 0;word-break:break-all}
.result{margin-top:14px}.result button{margin:4px 6px 4px 0}
.msg{padding:10px 14px;border-radius:10px;background:#eef2ff}.err{background:#fef2f2;color:var(--err)}
.content{background:var(--surf);border:1px solid var(--bd);border-radius:16px;padding:22px;margin:18px 0}
details{border-top:1px solid var(--bd);padding:10px 0}summary{font-weight:700;cursor:pointer}
.search{width:100%;padding:13px;border-radius:12px;border:1px solid var(--bd);font:inherit;margin-top:18px}
.thumbs{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.thumb{border:2px solid var(--bd);border-radius:10px;padding:6px;text-align:center;cursor:pointer;background:#fff;font-size:.8rem;color:var(--mut)}
.thumb canvas{max-width:110px;height:auto;display:block;border-radius:6px}
.thumb.sel{border-color:var(--p);color:var(--p);font-weight:700}
.footer{background:#0f172a;color:#cbd5e1;padding:34px 18px}.footer a{color:#cbd5e1;display:block;text-decoration:none;margin:4px 0;font-size:.92rem}
.footer a:hover{color:#fff}
.footer-grid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}.copy{max-width:1120px;margin:20px auto 0;color:#94a3b8;font-size:.88rem}
img.preview{max-width:100%;height:auto;border-radius:10px;margin-top:12px}
@media(max-width:640px){.nav{padding:10px 14px;gap:8px}.logo{font-size:1.2rem}.nav-links{gap:6px 14px;flex:1 1 auto}.nav-links>a,.nav-group-btn{padding:8px 2px}.nav-menu{left:0;right:auto;min-width:210px;max-width:86vw;padding:6px}.nav-menu a{padding:10px 12px;border-bottom:1px solid var(--bd)}.nav-menu a:last-child{border-bottom:0}.tool{padding:16px}.content{padding:16px}.grid{grid-template-columns:1fr 1fr;gap:12px}.card{padding:14px}.card h3{font-size:1rem}}