:root{ --bg:#f4f6f8; --card:#fff; --muted:#6b7280; --accent:#0b84ff; --text:#0b1220; }
:root.dark{ --bg:#071026; --card:#0b1726; --muted:#9fb4c9; --accent:#4da3ff; --text:#e6eef8; }
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,Arial}
.wrap{max-width:1100px;margin:0 auto;padding:18px}
.site-header{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#66c2ff);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800}
.top-nav{padding:8px 0;margin-top:6px}
.top-nav a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:8px;font-weight:600}
.card{background:var(--card);border-radius:12px;padding:18px;margin-top:18px;box-shadow:0 8px 24px rgba(12,20,30,0.06)}
.drop{border:2px dashed rgba(11,132,255,0.12);padding:20px;border-radius:10px;text-align:center;cursor:pointer;background:linear-gradient(180deg,#fff,#fbfdff)}
.controls-row{display:flex;gap:10px;margin-top:12px;align-items:center;flex-wrap:wrap}
.select{padding:10px;border-radius:8px;border:1px solid #e6eefb}
.btn{padding:10px 14px;border-radius:10px;border:0;background:var(--accent);color:#fff;cursor:pointer;font-weight:700}
.preview-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.result{display:flex;gap:12px;align-items:center;padding:10px;border-radius:10px;border:1px solid #eef4ff;background:linear-gradient(180deg,#fff,#fbfdff)}
.thumb{width:96px;height:96px;border-radius:8px;object-fit:cover}
.progress{height:12px;background:rgba(2,6,23,0.04);border-radius:8px;overflow:hidden;border:1px solid rgba(11,132,255,0.04)}
.progress > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#66c2ff);transition:width 240ms linear}
.hidden{display:none}
.small{font-size:13px}
.footer{margin-top:22px;text-align:center;color:var(--muted);font-size:13px;padding-bottom:40px}
.section-scroll{scroll-margin-top:80px}