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#334155;--brand-accent-soft: color-mix(in srgb, var(--brand-accent) 22%, var(--bg-elevated));--icon-organize: #fb923c;--icon-optimize: #4ade80;--icon-convert-blue: #60a5fa;--icon-convert-amber: #facc15;--icon-edit: #c084fc;--icon-security: #f87171;--shadow-card: 0 8px 24px rgba(0, 0, 0, .28);--topbar-bg: rgba(26, 31, 38, .9);--chip-active-bg: var(--brand-accent);--chip-active-fg: #ffffff}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg-page)}.app-backdrop{position:relative;min-height:100dvh}.app-backdrop:before,.app-backdrop:after{content:"";position:fixed;width:min(58vw,520px);height:min(48vh,420px);border-radius:50%;filter:blur(72px);opacity:.34;z-index:0;pointer-events:none}.app-backdrop:before{background:#7dd3fc;top:-12%;right:-8%}.app-backdrop:after{background:#5eead4;bottom:-8%;left:-10%}[data-theme=dark] .app-backdrop:before,[data-theme=dark] .app-backdrop:after{opacity:.12}.app-backdrop .layout,.app-backdrop 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.35rem;font:inherit;font-size:.88rem;color:var(--text-muted);cursor:pointer;text-decoration:none;transition:color .2s ease,transform .2s cubic-bezier(.34,1.2,.64,1);border-radius:8px}.topbar-link:hover{color:var(--brand-accent);text-decoration:none;transform:translateY(-1px)}.btn-header-register{padding:.45rem 1.1rem;font-size:.82rem;font-weight:600;background:var(--brand-accent);color:#fff;border:none;border-radius:8px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s ease,transform .22s cubic-bezier(.34,1.2,.64,1),box-shadow .22s ease;box-shadow:0 1px 2px #0000000f}.btn-header-register:hover{background:var(--brand-accent-hover);text-decoration:none;color:#fff;transform:translateY(-1px);box-shadow:0 4px 14px 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.btn:hover:not(:disabled){background:#27272a;border-color:#3f3f46}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;border-color:transparent}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.hero{padding:2.5rem 0 1.5rem;text-align:center}.hero h1{margin:0 auto 1rem;max-width:28ch;font-size:clamp(1.75rem,3.6vw,2.4rem);font-weight:700;letter-spacing:-.03em;line-height:1.18;color:var(--text)}[data-theme=dark] .hero h1{color:var(--text)}.hero p.lead{margin:0 auto;color:var(--text-muted);font-size:1.04rem;max-width:min(52ch,92vw);line-height:1.6}[data-theme=dark] .hero p.lead{color:var(--text-muted)}.category-bar{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin:1.85rem 0 1.65rem;padding:0 .15rem}.category-chip{display:inline-flex;align-items:center;justify-content:center;min-height:2.75rem;padding:.45rem 1.15rem;border-radius:999px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);font-size:.88rem;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,color .15s,box-shadow .15s}[data-theme=dark] .category-chip:not(.is-active){color:var(--text);background:var(--bg-elevated)}.category-chip:hover:not(.is-active){border-color:color-mix(in srgb,var(--brand-accent) 28%,var(--border));box-shadow:0 1px color-mix(in srgb,var(--brand-accent) 12%,transparent)}.category-chip.is-active{background:var(--chip-active-bg);border-color:var(--chip-active-bg);color:var(--chip-active-fg)}.tools-section{margin-top:.25rem}#herramientas-pdf-heading,#tools-grid{scroll-margin-top:5.5rem}.tools-section__title{text-align:center;margin:0 0 .35rem;font-size:1.2rem;font-weight:700;color:var(--text);letter-spacing:-.02em}[data-theme=dark] .tools-section__title{color:var(--text)}.tools-section__subtitle{text-align:center;margin:0 0 1.15rem;font-size:.95rem;color:var(--text-muted)}[data-theme=dark] .tools-section__subtitle{color:var(--text-muted)}.tool-matrix{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,248px),1fr));gap:clamp(.85rem,2.5vw,1.35rem);margin-top:.35rem;scroll-margin-top:88px;align-items:stretch}@media(min-width:640px){.tool-matrix{grid-template-columns:repeat(2,1fr)}}@media(min-width:900px){.tool-matrix{grid-template-columns:repeat(3,1fr)}}@media(min-width:1120px){.tool-matrix{grid-template-columns:repeat(4,1fr)}}@media(min-width:1320px){.tool-matrix{grid-template-columns:repeat(5,1fr)}}@media(min-width:1480px){.tool-matrix{grid-template-columns:repeat(6,1fr)}}.tool-card{display:flex;flex-direction:column;align-items:flex-start;box-sizing:border-box;min-height:13.5rem;height:auto;padding:clamp(1.35rem,3vw,1.9rem) clamp(1.25rem,3vw,2rem);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);text-decoration:none;color:inherit;transition:transform .2s ease,box-shadow .2s 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