.institutional-nav{position:relative;z-index:80}.institutional-nav summary{cursor:pointer;font-size:inherit;list-style:none;color:#fff}.institutional-nav summary:after{content:'⌄';margin-left:6px}.institutional-nav>div{position:absolute;right:0;top:26px;min-width:220px;background:#fff;border:1px solid #e5e9f4;border-radius:14px;padding:8px;box-shadow:0 16px 48px #07133429;display:grid;gap:0}.institutional-nav>div>a{color:#17264c!important;margin:0!important;padding:11px 14px;border-radius:8px;font-size:.78rem}.institutional-nav>div>a:hover{background:#f0f4ff}.utility-bar .container>div{align-items:center}
.hero-slide .hero-layout{max-width:1200px;min-height:450px}.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:30px 0 48px}.service-card{position:relative;overflow:hidden;border:1px solid #dce4f0;border-radius:20px;padding:30px;background:linear-gradient(150deg,#fff,#f2f6ff);box-shadow:0 12px 38px #14295706;transition:transform .25s}.service-card:nth-child(2){background:linear-gradient(150deg,#fff,#fff5eb)}.service-card:nth-child(3){background:linear-gradient(150deg,#fff,#edf9f6)}.service-card:hover{transform:translateY(-4px)}.service-symbol{display:grid;place-items:center;border:1px solid #d9e3f4;border-radius:14px;width:48px;height:48px;font-size:1.8rem;color:#193464;margin-bottom:30px}.service-number{position:absolute;right:25px;top:30px;font-size:.68rem;color:#8b97b0;letter-spacing:.15em}.service-card h2{font-size:1.2rem;line-height:1.4}.service-card p{font-size:.86rem;line-height:1.9;color:#64718a}.service-card>a{display:inline-block;margin-top:16px;font-size:.8rem;font-weight:700}.service-audience{border:1px solid #e0e6f2;border-radius:22px;padding:32px;display:grid;grid-template-columns:1.5fr 1fr;gap:32px;background:#fff;margin:30px 0 54px}.service-audience h2,.service-ods h2{font-size:1.65rem;line-height:1.3}.service-audience p,.service-ods>p{color:#65728a;font-size:.9rem;line-height:1.85}.service-pills{display:flex;align-content:center;align-items:center;flex-wrap:wrap;gap:10px}.service-pills span{background:#f4f6fc;border:1px solid #e1e6f2;padding:9px 14px;border-radius:30px;font-size:.78rem}.ods-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:25px 0 50px}.ods-grid article{padding:22px;border-top:2px solid #eb650a;background:#fff;border-radius:12px}.ods-grid strong{font-size:2rem;color:#173560}.ods-grid h3{font-size:.9rem}.ods-grid p{font-size:.8rem;line-height:1.75;color:#69748b}.integration-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:24px}.integration-grid h2{font-size:1.1rem}.integration-grid p,.integration-payment p,.integration-steps{font-size:.83rem;line-height:1.85;color:#65718a}.integration-steps li{margin-bottom:14px}.integration-payment{margin-top:24px}.file-pending{padding:18px 20px;margin:22px 0;border:1px solid #dce5f3;border-radius:12px;background:#f4f7fd;font-size:.88rem;line-height:1.8}.contribution-progress{font-size:.85rem;color:#687795;margin:20px 0}.advertising-slot{margin:48px 0;padding:30px;border:1px solid #e0e5ed;border-radius:14px;text-align:center;min-height:130px}.advertising-slot small{font-size:.6rem;letter-spacing:.14em;color:#8b95a7}.advertising-slot p{font-size:.8rem;color:#6a768b}.advertising-slot button{font-size:.75rem}
.support-widget{position:fixed;right:24px;bottom:22px;z-index:110;font-size:14px}.support-widget>summary{list-style:none;cursor:pointer;background:#111f4b;color:white;border:1px solid #304677;border-radius:28px;padding:12px 20px;box-shadow:0 8px 28px #10215435;font-weight:700;display:flex;gap:10px;align-items:center}.support-widget>summary::-webkit-details-marker{display:none}.support-widget>summary>span{color:#ff9139}.support-window{position:absolute;right:0;bottom:60px;width:352px;max-width:calc(100vw - 32px);background:#fff;border:1px solid #e1e7f1;border-radius:20px;box-shadow:0 18px 70px #0d1b4b30;overflow:hidden}.support-window header{background:linear-gradient(120deg,#10204d,#28456a);padding:18px;color:#fff;display:flex;align-items:center;gap:12px}.support-avatar{background:#ffffff12;border:1px solid #ffffff28;border-radius:12px;padding:9px 12px;color:#ff943f}.support-window header strong{font-size:13px;display:block}.support-window header small{display:block;font-size:10px;color:#c9d4eb;margin-top:5px}.support-close{background:none;border:none;color:#fff;font-size:24px;padding:0 4px;margin-left:auto;min-height:32px;cursor:pointer}.support-history{height:235px;overflow:auto;padding:18px;background:linear-gradient(#f7f9fd,#fff)}.support-message{font-size:12px;line-height:1.75;background:#edf2f9;border-radius:12px;padding:13px 14px;margin:0 0 12px;white-space:pre-wrap;overflow-wrap:anywhere;color:#30435f}.support-own{background:#142a53;color:#fff;margin-left:35px}.support-message small{font-size:9px;color:#657a96;display:block;margin-top:6px}.support-link{display:block;font-size:11px;margin-top:7px;color:#b64b0b!important}.support-topics{display:flex;gap:6px;flex-wrap:wrap;padding:0 18px 12px}.support-topics button{font-size:10px;padding:6px 9px;background:#fff;border:1px solid #dce4f1;color:#355176;border-radius:20px;min-height:30px;cursor:pointer}.support-form{padding:12px 18px;border-top:1px solid #e8edf4;margin:0!important}.support-form>label{font-size:10px;color:#6c7c93}.support-form>div{display:flex;gap:6px;margin-top:5px}.support-form input:not([type=checkbox]){font-size:12px;min-width:0;width:100%;min-height:38px;padding:9px 11px;border:1px solid #d9e2f0;border-radius:9px;background:#fff}.support-form button{width:38px;padding:8px;min-height:38px;font-size:16px;border-radius:9px;background:#13254b;color:white}.support-consent{display:flex;align-items:flex-start;gap:8px;margin-top:10px;line-height:1.6}.support-consent input{width:auto!important;min-height:0;margin-top:2px}.support-note{display:block;text-align:center;font-size:9px;padding:0 16px 13px;color:#8090a6}.support-note a{color:#475d7d}
@media(max-width:900px){.service-grid{grid-template-columns:1fr}.service-card{padding:26px}.service-card p{max-width:650px}.ods-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.service-audience{grid-template-columns:1fr}.service-audience h2{font-size:1.4rem}}
@media(max-width:560px){.support-widget{right:16px;bottom:16px}.support-window{width:330px}.support-history{height:min(230px,35vh)}.integration-grid{grid-template-columns:1fr}.service-audience{padding:24px}.ods-grid{gap:12px}.ods-grid article{padding:18px}.institutional-nav>div{right:-35px}.service-card h2{font-size:1.12rem}}
@media(prefers-reduced-motion:reduce){.service-card{transition:none}.service-card:hover{transform:none}}
.support-window{display:flex;flex-direction:column;max-height:calc(100dvh - 100px)}.support-history{min-height:60px;flex-shrink:1}.support-window header,.support-topics,.support-form,.support-note{flex-shrink:0}
.article-read{background:#f3f6fc;border:1px solid #e0e7f3;border-radius:9px;padding:10px 12px;font-size:.76rem;color:#264166;transition:background .2s}.article-read:hover{background:#e4edfa}.article-read>span{display:grid;place-items:center;width:24px;height:24px;background:#fff;border-radius:50%;border:1px solid #dce5f3}

.header-inner .brand img{width:88px;height:72px;object-fit:contain;background:white;border-radius:12px;padding:3px}.header-inner .brand>span{display:none}
.partners-section{position:relative;width:100vw;margin-left:calc(50% - 50vw);padding:38px max(22px,calc((100vw - 1120px)/2));box-sizing:border-box;background:linear-gradient(135deg,#fff,#f3f6fc)}
.book-card-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-start;padding:12px 0 16px}.book-card-actions>a{border:1px solid #e0e7f2;border-radius:8px;padding:8px 10px;min-height:34px;background:#f4f7fd;font-size:.65rem!important;transition:background .2s,transform .2s;color:#233c63!important;white-space:nowrap}.book-card-actions>a:first-child{background:#132951;color:#fff!important;border-color:#132951}.book-card-actions>a:hover{background:#e4edf9;transform:translateY(-2px)}.book-card-actions>a:first-child:hover{background:#244b77}.book-card-actions>a:focus-visible,.resource-card:focus-visible{outline:3px solid #ff9643;outline-offset:3px}
.resource-link{display:inline-flex;align-items:center;background:#eef3fa;border:1px solid #dde5f2;border-radius:7px;padding:7px 10px;font-size:.68rem;transition:background .2s}.resource-card:hover .resource-link{background:#142952;color:#fff}.text-arrow{padding:9px 13px;background:#fff;border:1px solid #dfe6f2;border-radius:9px;font-size:.76rem}
.related-books{grid-template-columns:repeat(4,minmax(0,1fr))}.contact-layout{display:grid;grid-template-columns:.85fr 1.2fr;gap:32px;margin-bottom:60px}.contact-info{border-radius:20px;padding:35px;background:radial-gradient(circle at 100% 0,#2c527c,#10234b 65%);color:#fff;align-self:start}.contact-info h2{color:#fff;font-size:1.65rem}.contact-info p{color:#cbd7e8;font-size:.88rem;line-height:1.9}.contact-info>a{display:block;margin:16px 0;color:#fff;font-size:.9rem;overflow-wrap:anywhere}.contact-icon{font-size:2rem;display:inline-flex;padding:12px 16px;border-radius:14px;border:1px solid #ffffff35;margin-bottom:24px;color:#ffac65}.contact-guidance{margin-top:35px;border-top:1px solid #ffffff28;padding-top:24px}.contact-guidance strong{font-size:.85rem}.contact-form{padding:32px}.contact-form h2{font-size:1.35rem}.contact-request{margin-bottom:20px}.contact-request .message-body{overflow-wrap:anywhere}.contact-request button{margin-top:15px;font-size:.8rem}
@media(max-width:900px){.hero-slide .hero-layout{min-height:400px}.related-books{grid-template-columns:repeat(3,minmax(0,1fr))}.contact-layout{grid-template-columns:1fr}.contact-info{padding:28px}}
@media(max-width:560px){.hero-slide .hero-layout{min-height:390px}.header-inner .brand img{width:74px;height:60px}.related-books{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-form{padding:24px}.book-card-actions>a{font-size:.63rem!important;padding:7px 8px}.partners-section{padding:30px 22px}}
@media(prefers-reduced-motion:reduce){.book-card-actions>a,.resource-link{transition:none}.book-card-actions>a:hover{transform:none}}

.study-editor{border:1px solid #dce5f0;border-radius:12px;overflow:hidden;background:#fff}.editor-toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:8px;background:#f2f6fc;border-bottom:1px solid #e2e9f3}.editor-action{font:inherit;font-size:.72rem!important;min-height:32px!important;padding:6px 10px!important;border:1px solid #d6e1ef!important;border-radius:7px!important;background:#fff!important;color:#264369!important;cursor:pointer}.editor-action:hover{background:#e6eefb!important}.study-editor textarea,.study-editor>input{border:0!important;border-radius:0!important;margin:0!important;box-shadow:none!important;min-height:85px}.editor-preview{padding:12px;border-top:1px solid #e0e7f2;font-size:.76rem}.editor-preview summary,.editor-import summary{cursor:pointer;color:#345376;font-weight:600}.editor-preview-content{padding:18px 0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.9;font-size:.9rem}.editor-import{border:1px solid #dde6f3;background:linear-gradient(135deg,#f2f6fc,#fff);border-radius:12px;padding:18px;margin-bottom:22px}.editor-import p{font-size:.78rem;line-height:1.8}.editor-import input,.editor-import select,.editor-import textarea{margin:10px 0!important}.editor-import>button{margin-right:8px;margin-top:8px}.editor-page-range{display:flex;gap:15px}.editor-page-range label{font-size:.7rem}.editor-page-range input{max-width:120px}.formula-dialog{width:min(620px,calc(100vw - 36px));border:1px solid #d3deed;border-radius:18px;padding:28px;box-shadow:0 22px 80px #0a1b4740}.formula-dialog::backdrop{background:#101d465a;backdrop-filter:blur(3px)}.formula-dialog h2{font-size:1.2rem}.formula-dialog p{font-size:.82rem;color:#65758f;line-height:1.8}.formula-dialog math-field{display:block;border:1px solid #d6e2f2;border-radius:12px;padding:18px;font-size:1.35rem;margin:20px 0;--caret-color:#d65c13}.article-body table{width:100%;border-collapse:collapse}.article-body td,.article-body th{border:1px solid #dfe5ed;padding:10px}.article-body h2{font-size:1.5rem;margin-top:30px}.article-body h3{font-size:1.15rem;margin-top:24px}.article-body li{line-height:1.9;margin:10px 0}.topic-references{border-left:3px solid #f07723;background:#f1f5fb;padding:22px;margin:24px 0;font-size:.84rem}.topic-references h2{font-size:1.1rem}.katex-display{overflow-x:auto;overflow-y:hidden;padding:12px 0}.question-card .katex,.result-card .katex{font-size:1.1em}

.formula-source{font-size:.75rem;color:#60758f;margin:15px 0 20px}.formula-source summary{cursor:pointer}.formula-source input{width:100%;border:1px solid #d9e3ef;border-radius:8px;padding:12px;margin-top:10px;font-family:monospace;box-sizing:border-box}

/* Logótipo transparente, contactos e redes sociais */
.header-inner .brand img{background:transparent;border-radius:0;padding:0;width:100px;height:72px}
.social-links{display:flex!important;gap:10px!important;align-items:center;flex-wrap:wrap;margin:22px 0}
.social-links a{display:grid!important;place-items:center;width:36px;height:36px;margin:0!important;border-radius:50%;border:1px solid #ffffff35;background:#ffffff0c;color:#fff!important;transition:background .2s,transform .2s}
.social-links svg{width:17px;height:17px;fill:currentColor}.social-links a:hover{background:#ff6700;transform:translateY(-2px)}
.whatsapp-float{position:fixed;right:28px;bottom:96px;z-index:69;display:flex;align-items:center;justify-content:center;width:52px;height:52px;border:1px solid #ffffff60;border-radius:50%;background:#148b53;color:#fff;box-shadow:0 5px 18px #10244725}
.whatsapp-float svg{width:27px;height:27px;fill:currentColor}.whatsapp-float>span{position:absolute;right:62px;background:#fff;color:#24583e;padding:5px 9px;border-radius:7px;font-size:.7rem;opacity:0;pointer-events:none}.whatsapp-float:hover{background:#106e42;color:white}.whatsapp-float:hover>span,.whatsapp-float:focus-visible>span{opacity:1}body:has(.support-widget[open]) .whatsapp-float{visibility:hidden}
.contact-fields{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.contact-field{min-width:0}.contact-field label{font-size:.8rem}.contact-field.field-topic,.contact-field.field-message,.contact-field.field-consent{grid-column:1/-1}.contact-field.field-consent{display:flex;align-items:flex-start;gap:12px}.field-consent label{order:2;line-height:1.7;font-weight:400}.field-consent input{flex-shrink:0;margin-top:4px}.required-star{color:#d55b3f}.contact-field textarea{min-height:135px;resize:vertical}.contact-form form>button{gap:12px;border-radius:10px;background:linear-gradient(110deg,#14365f,#294b7e);border-color:#294b7e;box-shadow:0 5px 18px #0d1b4b14}.contact-form form>p.small-text{margin-top:20px;font-size:.7rem}
.download-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}.download-choice-grid>div{border:1px solid #dfe7f2;border-radius:12px;padding:20px;background:linear-gradient(140deg,#f4f7fc,#fff)}.download-choice-grid h2{font-size:1rem}.download-choice-grid p{font-size:.8rem}.download-choice-grid .button,.download-choice-grid button{font-size:.75rem;border-radius:9px;min-height:40px}.download-choice-grid small{display:block;margin-top:9px;font-size:.72rem}.trade-contribute{font-size:.74rem;display:inline-block;margin-top:10px;color:#a74310}.welcome-note{font-size:.78rem!important;margin-top:20px!important}.reader-download{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid #dce5f0;border-radius:10px;padding:12px 18px;margin:15px 0;background:#fff}.reader-download>span{font-size:.78rem;color:#5a6d8a}.reader-download .button,.reader-download button{font-size:.76rem;min-height:38px}
@media(max-width:560px){.header-inner .brand img{width:84px;height:60px}.whatsapp-float{right:16px;bottom:84px;width:46px;height:46px}.contact-fields,.download-choice-grid{grid-template-columns:1fr}.contact-field{grid-column:1/-1}.reader-download{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){.social-links a{transition:none}.social-links a:hover{transform:none}}

.professional-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:26px 0}.professional-grid .surface{padding:30px;border-top:3px solid #e68b47;background:linear-gradient(135deg,#fff,#f7f9fd)}.professional-grid h2{font-size:1.3rem}.professional-grid p{font-size:.86rem}.course-syllabus{padding:0;list-style:none;margin:20px 0}.course-syllabus li{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid #e0e7f1;padding:14px 0;font-size:.84rem}.course-syllabus a{font-size:.8rem}.certificate-action{margin-top:30px;border-left:3px solid #ee803b}.course-review{border:1px solid #e0e7f1;padding:15px;border-radius:8px;margin:10px 0}.course-review summary{cursor:pointer;font-size:.85rem;font-weight:600}.course-review p{margin-top:15px;font-size:.82rem}.cv-preview{max-width:800px;margin:0 auto;border-top:5px solid #132a51;padding:42px}.cv-preview h2{font-size:1.8rem}.cv-preview h3{margin-top:30px;color:#142a51;letter-spacing:.06em;font-size:.9rem;text-transform:uppercase}.cv-preview p{font-size:.88rem}.cv-classic{border-color:#343b45}.cv-europass{border-left:5px solid #27659c}.certificate-verify{max-width:760px;margin:50px auto;overflow-wrap:anywhere}
@media(max-width:650px){.professional-grid{grid-template-columns:1fr}.professional-grid .surface,.cv-preview{padding:24px}.course-syllabus li{align-items:flex-start;flex-direction:column}}

.cv-header{margin-bottom:26px}.cv-classic .cv-header{text-align:center}.cv-classic h2,.cv-classic h3{color:#272b32}.cv-europass .cv-section{display:grid;grid-template-columns:140px minmax(0,1fr);gap:24px;border-top:1px solid #dce4f1;padding:18px 0}.cv-europass .cv-section h3{margin:0;letter-spacing:0;font-size:.8rem}.cv-europass .cv-section p{margin:0 0 8px}.cv-preview{overflow-wrap:anywhere}.cv-preview .cv-header .eyebrow{font-size:.8rem}
@media(max-width:650px){.cv-europass .cv-section{grid-template-columns:1fr;gap:12px}}