@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#2a1530;--plum:#481c49;--deep:#1e102a;--lilac:#c8a9ff;--cream:#faf5f3;--muted:#766777;--line:#e9dfe7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:'DM Sans',sans-serif}a{color:inherit;text-decoration:none}button{font:inherit}h1,h2,h3,p{margin-top:0}h1,h2{letter-spacing:-.055em}h1,h2,.brand{font-family:'Manrope',sans-serif}h2{font-size:clamp(2.5rem,5vw,5rem);line-height:1.12;font-weight:600}h2 i,h1 i{font-family:Georgia,serif;font-weight:400;color:#b18ee7}section{scroll-margin-top:90px}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between;padding:0 max(4%,calc((100vw - 1420px)/2));position:sticky;top:0;z-index:20;background:#fcf8f8f5;backdrop-filter:blur(18px);border-bottom:1px solid #e7dce5}.brand{display:flex;align-items:center;gap:12px;font-size:1.45rem;font-weight:800;letter-spacing:-.065em}.brand em{font-style:normal;color:#a37bcf}.brand-icon{height:43px;width:43px;display:grid;place-items:center;background:var(--deep);color:#f1a3cf;border-radius:13px;font-weight:800;position:relative}.brand-icon span{font-size:.6em;color:#caaaff;margin-left:-4px}.topbar nav{display:flex;align-items:center;gap:27px}.topbar nav a{font-size:.78rem;font-weight:700;transition:color .2s}.topbar nav a:hover{color:#ad77c7}.topbar nav .nav-cta{padding:14px 19px;background:var(--plum);color:white;border-radius:5px}.menu-toggle{display:none}.hero{min-height:730px;background:var(--deep);color:white;position:relative;overflow:hidden;display:grid;grid-template-columns:1.1fr .9fr}.hero-inner{z-index:2;padding:130px 0 55px max(7%,calc((100vw - 1320px)/2));max-width:850px}.eyebrow,.kicker{font-size:.69rem;letter-spacing:.2em;font-weight:800}.eyebrow{color:#cbb0e9;display:flex;align-items:center;gap:10px}.dot{width:8px;height:8px;border-radius:50%;background:#f2a3c5;box-shadow:0 0 18px #f2a3c5}.hero h1{font-size:clamp(3.3rem,6.1vw,6.9rem);line-height:1.06;font-weight:600;margin:32px 0}.hero h1 i{color:#d9b3fa}.hero p{max-width:550px;color:#d3c2d9;font-size:1.1rem;line-height:1.85}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:36px}.btn{padding:17px 22px;display:inline-flex;align-items:center;justify-content:space-between;gap:30px;border-radius:5px;font-size:.82rem;font-weight:800}.btn-primary{background:#c5a1fa;color:#24102c}.btn-outline{border:1px solid #705674;color:#fff}.hero-notes{display:flex;gap:30px;margin-top:115px;font-size:.7rem;color:#aa93b4;letter-spacing:.06em}.hero-art{position:relative;min-height:650px;background:radial-gradient(ellipse at 48% 52%,#6d2a77 0%,#30143e 40%,transparent 68%)}.sun{position:absolute;width:min(30vw,430px);height:min(30vw,430px);border-radius:50%;top:21%;left:17%;background:linear-gradient(180deg,#f6b1cb 0%,#f082b1 35%,#d45a9c 57%,#783078 100%);box-shadow:0 0 100px #bf4f9670}.sun:after{content:'';position:absolute;inset:52% 0 0;background:repeating-linear-gradient(to bottom,transparent 0 17px,#32143d 18px 25px);border-radius:0 0 50% 50%}.orbit{position:absolute;border:1px solid #c5a0f055;border-radius:50%;transform:rotate(-28deg)}.orbit1{width:90%;height:52%;top:24%;left:-4%}.orbit2{width:60%;height:92%;top:4%;left:10%;transform:rotate(32deg)}.graph{position:absolute;right:7%;top:12%;font-family:Georgia,serif;font-size:2rem;color:#e9c8f8aa;transform:rotate(10deg)}.graph small{font-size:1rem}.art-label{position:absolute;bottom:18%;left:24%;font-size:.7rem;letter-spacing:.5em;color:#f8c0e3}.strip{display:flex;justify-content:space-around;gap:20px;flex-wrap:wrap;padding:23px 5%;background:#e9ddef;color:#5d3c69;font-size:.68rem;font-weight:800;letter-spacing:.13em}.section{padding:115px max(7%,calc((100vw - 1320px)/2))}.kicker{color:#8d5e9e}.about{background:#fbf8f6}.section-intro{margin-bottom:70px}.section-intro h2{margin-top:22px}.about-grid{display:grid;grid-template-columns:.65fr 1.35fr;gap:90px}.lead{font-size:1.45rem;line-height:1.7}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px 40px}.feature-grid article{border-top:1px solid #d5c7d3;padding-top:20px}.feature-no{font-size:.7rem;color:#a07aa7}.feature-grid h3{margin:20px 0 12px;font-size:1.05rem}.feature-grid p{font-size:.91rem;color:var(--muted);line-height:1.8}.courses{background:#f0e7ef}.section-head{display:flex;justify-content:space-between;gap:70px;align-items:end;margin-bottom:60px}.section-head h2{margin:24px 0 0}.section-head>p{max-width:370px;color:#796a7b;line-height:1.8}.course-panel{background:#fff;border:1px solid #e6dce5;border-radius:9px;overflow:hidden}.course-header,.course-row{display:grid;grid-template-columns:1fr 120px;padding:19px 35px;gap:15px}.course-header{background:#35183d;color:#ddc5e7;font-size:.7rem;letter-spacing:.15em;font-weight:800}.course-row{border-bottom:1px solid #eee7ed;align-items:center}.course-row span:last-child{text-align:center;color:#7e6088}.course-row:hover{background:#fbf7fc}.course-foot{padding:22px 35px;margin:0;color:#756678;font-size:.88rem;line-height:1.7}.course-foot a,.text-link{color:#713b83;font-weight:800;text-decoration:underline;text-underline-offset:5px}.banner{background:linear-gradient(115deg,#421c4b,#6d326c 55%,#3c1a4b);color:white;padding:80px max(7%,calc((100vw - 1320px)/2));display:flex;justify-content:space-between;align-items:center;gap:40px}.banner h2{margin:18px 0 0}.banner .kicker{color:#d4aedf}.btn-light{background:#fff;color:#3b1944;white-space:nowrap}.students{background:#fbf8f6}.students-layout{display:grid;grid-template-columns:1fr 1fr;gap:80px}.notice{background:#efe2f1;padding:45px;border-left:4px solid #7d3d83}.notice-label{font-size:.7rem;font-weight:800;letter-spacing:.15em;color:#804a85}.notice h3{font-size:1.65rem;margin:25px 0}.notice p,.students-copy p{line-height:1.85;color:#695a6d}.notice a{font-weight:800;text-decoration:underline;text-underline-offset:5px}.students-copy{padding:25px 0}.students-copy h3{font-size:1.65rem}.students-copy .text-link{display:inline-block;margin-top:20px}.faq{background:#f0e7ef}.faq-list{max-width:920px;margin:auto}.faq details{border-bottom:1px solid #d3c4d5}.faq summary{cursor:pointer;list-style:none;padding:26px 8px;display:flex;justify-content:space-between;gap:20px;font-weight:700;font-size:1.06rem}.faq summary::-webkit-details-marker{display:none}.faq summary span{font-size:1.4rem;color:#794887}.faq details[open] summary span{transform:rotate(45deg)}.faq details p{color:#6b5b70;line-height:1.8;padding:0 45px 22px 8px;max-width:760px}.contact{background:#2c1535;color:white;display:grid;grid-template-columns:1fr 1fr;gap:90px}.contact .kicker{color:#b993d2}.contact h2{margin:24px 0}.contact>div>p{color:#cbbbd1;line-height:1.8;max-width:490px}.contact-box{border:1px solid #755b7b;padding:45px;display:flex;flex-direction:column;gap:22px;justify-content:center}.contact-box>span{color:#c4a5d1;letter-spacing:.15em;font-size:.72rem}.contact-box>a{font-size:clamp(1.2rem,2vw,1.8rem);font-weight:700;overflow-wrap:anywhere}.contact-box>p{color:#bca9c2;font-size:.85rem;margin:0}footer{background:#1d1025;color:#fff;padding:65px max(7%,calc((100vw - 1320px)/2)) 25px}.footer-top{display:flex;justify-content:space-between;gap:40px;align-items:start;padding-bottom:65px}.footer-top p{color:#b9a7bf;line-height:1.7}.footer-links{display:grid;gap:12px;font-size:.85rem;color:#cdbed2}.footer-bottom{border-top:1px solid #4d3a54;padding-top:22px;display:flex;justify-content:space-between;color:#a897b1;font-size:.75rem}@media(max-width:1100px){.topbar nav{gap:13px}.topbar nav a{font-size:.67rem}.hero-inner{padding-left:7%}.hero-art{opacity:.65}.hero h1{font-size:5.3vw}}@media(max-width:800px){.topbar{height:72px;padding:0 5%}.menu-toggle{display:block;background:none;border:0;font-size:1.7rem;color:#4c2553}.topbar nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fcf8f8;box-shadow:0 18px 30px #2c153520;padding:25px 6%;flex-direction:column;align-items:stretch;gap:20px}.topbar nav.open{display:flex}.topbar nav a{font-size:.95rem}.hero{display:block;min-height:660px}.hero-inner{padding:105px 7% 65px}.hero h1{font-size:clamp(3rem,9vw,5rem)}.hero-art{position:absolute;inset:0;opacity:.23;pointer-events:none}.sun{width:400px;height:400px;top:22%;left:35%}.hero-notes{margin-top:75px}.section{padding:80px 7%}.about-grid,.students-layout,.contact{grid-template-columns:1fr;gap:35px}.section-head{display:block}.section-head>p{margin-top:25px}.banner{padding:70px 7%;flex-direction:column;align-items:start}.footer-top{flex-wrap:wrap}}@media(max-width:500px){.hero h1{font-size:3.1rem}.hero p{font-size:1rem}.hero-notes{gap:14px;flex-wrap:wrap}.feature-grid{grid-template-columns:1fr;gap:25px}.section{padding:65px 6%}h2{font-size:2.55rem}.course-header,.course-row{grid-template-columns:1fr 65px;padding:17px}.course-foot{padding:20px}.contact-box,.notice{padding:25px}.footer-top{display:grid}.footer-bottom{gap:12px;flex-wrap:wrap}}

/* RioMath custom refinements */
.brand-logo{width:48px;height:48px;object-fit:cover;border-radius:50%;display:block;flex-shrink:0;box-shadow:0 0 0 1px #dba4d055}
.brand{gap:10px;white-space:nowrap}.topbar .brand-logo{width:46px;height:46px}
.specialization{padding:70px max(7%,calc((100vw - 1320px)/2));display:grid;grid-template-columns:220px 1fr;gap:45px;align-items:center;background:#f6eaf2;border-bottom:1px solid #e7d2e1}.specialization-number{font-family:Georgia,serif;font-size:clamp(5rem,10vw,9rem);line-height:1;color:#65294f;letter-spacing:-.09em}.specialization-number span{font-size:.42em;vertical-align:top}.specialization h2{font-size:clamp(2.1rem,4vw,3.7rem);margin:14px 0 20px;color:#481c49}.specialization p{max-width:740px;font-size:1.15rem;line-height:1.8;margin:0;color:#50374e}.specialization strong{color:#75234e}
.rio-footer{background:#4b1b49;color:#ead0ed;padding:70px max(7%,calc((100vw - 1320px)/2)) 35px}.rio-footer-grid{display:grid;grid-template-columns:1.05fr 1.5fr .85fr;gap:70px}.rio-footer .brand{font-size:1.75rem;color:#e6c5f2}.rio-footer .brand em{color:#e6c5f2}.rio-footer h3{font-family:Georgia,serif;font-size:1.7rem;font-weight:400;margin:6px 0 27px;color:#e6c5f2}.rio-footer-brand p{margin:25px 0 65px;font-size:.88rem;line-height:1.7;color:#c9a5ca}.rio-footer small{font-size:.75rem;color:#c9a5ca}.rio-link-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.rio-link-columns>div{display:flex;flex-direction:column;gap:12px}.rio-footer a{transition:opacity .2s}.rio-footer a:hover{opacity:.7}.rio-link-columns a,.rio-footer-contact a{font-size:.89rem;line-height:1.5}.rio-footer-contact{display:flex;flex-direction:column;align-items:flex-start;gap:14px}.rio-footer-contact h3{margin-bottom:13px}.legal-note{display:block;margin-top:28px;max-width:330px;line-height:1.6}
@media(max-width:850px){.specialization{grid-template-columns:1fr;gap:15px;padding:55px 7%}.specialization-number{font-size:6rem}.rio-footer-grid{grid-template-columns:1fr 1fr;gap:42px}.rio-footer-brand{grid-column:1/-1}.rio-footer-brand p{margin:20px 0 24px}.rio-footer{padding:55px 7% 35px}}
@media(max-width:550px){.rio-footer-grid{grid-template-columns:1fr}.rio-footer-brand{grid-column:auto}.rio-link-columns{gap:12px}.topbar .brand-logo{width:38px;height:38px}.topbar .brand{font-size:1.15rem}}

/* Multi-page layout enhancements */
.subpage-heading{padding:100px max(5vw,24px) 30px;background:#24102c;color:#fff}
.subpage-heading h1{font-family:Georgia,serif;font-size:clamp(2.8rem,6vw,5.8rem);font-weight:400;line-height:1.12;margin:20px 0}
.subpage main>.section{padding-top:85px;min-height:55vh}
.subpage main>.section .section-intro h2,.subpage main>.section .section-head h2{font-size:clamp(2rem,4vw,3.8rem)}
.topbar nav a[aria-current="page"]{text-decoration:underline;text-underline-offset:7px}
@media(max-width:700px){.subpage-heading{padding-top:70px}.subpage main>.section{padding-top:50px}}

/* RioMath content restoration & home layout refinement */
.hero{min-height:600px}.hero-inner{padding-top:94px;padding-bottom:60px}.hero-notes{margin-top:52px}.hero-art{min-height:580px}
.authentic{background:#fcf7f8}.authentic .section-intro{margin-bottom:34px}.authentic-list{padding-left:25px;max-width:1050px;margin:0 auto;display:grid;gap:19px;font-size:1.04rem;line-height:1.85;color:#4d2948}.authentic-list li{padding-left:7px}.student-original{background:linear-gradient(145deg,#fff9fa,#f6eaf2)}.student-notice{max-width:760px;margin:0 auto 70px;background:#eadcf1;border-left:3px solid #743b74;padding:30px 36px;line-height:1.85}.student-notice p{margin:0 0 15px}.student-notice .source{font-size:.82rem;color:#6b4769}.authentic-subtitle{font-family:Georgia,serif;font-size:clamp(2rem,4vw,3.4rem);letter-spacing:-.03em;margin:0 0 32px}.student-statement{max-width:1050px;margin:65px auto 0;line-height:1.9;font-size:1.02rem}.student-statement p{margin-bottom:22px}.legal-disclaimer{margin-top:38px;font-size:.84rem;color:#745f71;border-top:1px solid #e3d5df;padding-top:20px}.home-highlights{background:#fcf8f7}.home-highlights .section-intro{max-width:800px;margin-bottom:46px}.home-lead{font-size:1.15rem;line-height:1.8;color:#695a6d}.home-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.home-card-grid article{background:white;border:1px solid #e8dce5;padding:34px 29px;border-radius:7px;min-height:245px}.home-card-grid article span{font-size:.68rem;letter-spacing:.14em;font-weight:800;color:#8d5e9e}.home-card-grid h3{font-size:1.35rem;margin:28px 0 13px}.home-card-grid p{line-height:1.75;color:#776579}.home-more{display:flex;align-items:center;gap:35px;flex-wrap:wrap;margin-top:35px}.home-more .btn-primary{background:#481c49;color:white}
@media(max-width:800px){.hero{min-height:unset}.hero-inner{padding-top:80px}.hero-art{min-height:unset}.home-card-grid{grid-template-columns:1fr}.home-card-grid article{min-height:unset}.student-notice{padding:25px}.student-statement{margin-top:45px}}


/* RioMath Future Edition — editorial sci-fi, accessible motion */
:root{--deep:#160b22;--plum:#451b4a;--lilac:#d5b6ff;--cream:#fcf8f7}
body{overflow-x:hidden}::selection{background:#e7a4d4;color:#24102c}
.topbar{background:rgba(252,248,250,.93);box-shadow:0 10px 40px rgba(43,16,49,.045)}
.topbar nav a{position:relative}.topbar nav a:not(.nav-cta):after{content:"";position:absolute;bottom:-8px;left:0;width:0;height:1px;background:#a064a2;transition:width .25s}.topbar nav a:hover:after,.topbar nav a[aria-current="page"]:after{width:100%}
.brand-logo{box-shadow:0 0 0 1px #dba4d055,0 0 22px #d870b522}.btn,.nav-cta{transition:transform .25s,box-shadow .25s,background .25s}.btn:hover,.nav-cta:hover{transform:translateY(-3px);box-shadow:0 12px 30px #38163c22}
.hero{min-height:650px;background:radial-gradient(circle at 76% 48%,#4a215b 0%,#21102e 42%,#140b20 85%)}.hero-inner{padding-top:105px}.hero-micro{font-size:.64rem;letter-spacing:.25em;color:#bca4ce;margin-bottom:23px}.hero h1{font-size:clamp(3.2rem,6vw,6.7rem)}.hero-art{background:transparent;isolation:isolate}.hero-art .sun{animation:sun-float 8s ease-in-out infinite;box-shadow:0 0 90px #e05ca052,0 0 170px #9e3e9d44}.hero-art .orbit{animation:orbit-breathe 12s ease-in-out infinite alternate}.hero-art .orbit2{animation-delay:-4s}.hero-art:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#bba0d00a 1px,transparent 1px),linear-gradient(90deg,#bba0d00a 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to left,#000,transparent)}
.hero-art .graph{font-size:1.4rem;opacity:.6}.specialization{background:linear-gradient(120deg,#f8ecf3,#f0e4f4)}.specialization-number{background:linear-gradient(135deg,#5c2456,#d378aa);background-clip:text;color:transparent}
.home-card-grid article,.journey-grid article,.payment-grid article{transition:transform .3s,border-color .3s,box-shadow .3s}.home-card-grid article:hover,.journey-grid article:hover,.payment-grid article:hover{transform:translateY(-6px);border-color:#d8a7d7;box-shadow:0 20px 55px #4c204215}
.future-journey{background:#f0e8f1}.journey-head{display:grid;grid-template-columns:1.3fr .7fr;gap:70px;align-items:end;margin-bottom:65px}.journey-head h2{margin:20px 0 0}.journey-head>p{line-height:1.9;color:#6e5d71;font-size:1.08rem}.journey-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.journey-grid article{padding:34px;background:#fcf9fc;border:1px solid #e1d3e3;border-radius:8px}.journey-index{display:block;font-family:Georgia,serif;font-size:3rem;color:#b58ac4;margin-bottom:50px}.journey-grid h3{font-size:1.25rem}.journey-grid p{color:#76667a;line-height:1.75}.future-quote{position:relative;overflow:hidden;background:#1d0e29;color:#fff;padding:120px 12%;text-align:center}.future-quote .kicker{color:#c9a1e2}.future-quote p{font-family:Georgia,serif;font-size:clamp(2rem,4.6vw,4.8rem);line-height:1.24;letter-spacing:-.04em;max-width:1040px;margin:32px auto 42px;position:relative}.future-quote a{position:relative;color:#e5c0f5;border-bottom:1px solid #a57cb6;padding-bottom:8px}.quote-orbit{position:absolute;width:900px;height:460px;border:1px solid #bd8ec82e;border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-23deg)}
.subpage-heading{position:relative;overflow:hidden;background:radial-gradient(ellipse at 85% 15%,#633168,#24102c 60%,#170b23);padding-top:110px;padding-bottom:65px}.subpage-heading:after{content:"";position:absolute;width:360px;height:360px;border:1px solid #b986c044;border-radius:50%;right:7%;top:-160px;pointer-events:none}.subpage-heading p{color:#e1cee5;max-width:700px;line-height:1.7}.subpage main>.section{min-height:0}
.rio-footer{background:#351338}.rio-footer-grid{gap:55px}.rio-footer-contact a{overflow-wrap:anywhere}
.legal-content{max-width:1120px;margin:auto;line-height:1.9}.legal-content h2{font-size:clamp(1.5rem,2.6vw,2.3rem);margin:36px 0 15px;letter-spacing:-.025em}.legal-content p{color:#65546b}.legal-content a{color:#723a80;text-decoration:underline}.payment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.payment-grid article{background:white;border:1px solid #e7d8e6;border-radius:8px;padding:26px}.payment-grid article span{font-size:.7rem;letter-spacing:.13em;color:#8b5994}
.reveal-ready{opacity:0;transform:translateY(22px);transition:opacity .75s ease,transform .75s ease}.reveal-ready.is-visible{opacity:1;transform:none}
@keyframes sun-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-17px)}}@keyframes orbit-breathe{from{opacity:.55}to{opacity:1}}
@media(max-width:850px){.journey-head{grid-template-columns:1fr;gap:10px}.journey-grid,.payment-grid{grid-template-columns:1fr}.future-quote{padding:85px 7%}.hero{min-height:unset}.hero-art .sun{animation:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important;transition:none!important}.reveal-ready{opacity:1;transform:none}}


/* RIO MATH — REFINED FUTURE EDITION */
.hero.hero-refined{display:grid!important;grid-template-columns:minmax(0,1.03fr) minmax(340px,.97fr)!important;align-items:center!important;min-height:600px!important;gap:12px!important;overflow:hidden!important;padding:46px max(5%,calc((100vw - 1450px)/2)) 54px!important;background:radial-gradient(ellipse at 72% 48%,#50235b 0%,#291235 42%,#170c22 90%)!important}
.hero-refined .hero-inner{grid-column:1!important;grid-row:1!important;max-width:700px!important;width:100%!important;padding:30px 0!important;margin:0!important;position:relative!important;z-index:3!important}
.hero-refined .hero-art{grid-column:2!important;grid-row:1!important;position:relative!important;inset:auto!important;min-height:490px!important;height:490px!important;opacity:1!important;pointer-events:none!important;overflow:visible!important}
.hero-refined .hero-art .sun{width:min(32vw,400px)!important;height:min(32vw,400px)!important;left:50%!important;top:49%!important;transform:translate(-50%,-50%)!important;animation:none!important}
.hero-refined .hero-art .orbit1{width:100%!important;height:66%!important;left:0!important;top:17%!important}
.hero-refined .hero-art .orbit2{width:75%!important;height:95%!important;left:13%!important;top:2%!important}
.hero-refined .hero-art .graph{right:3%!important;top:7%!important}
.hero-refined .hero-art .art-label{bottom:10%!important;left:50%!important;transform:translateX(-50%);white-space:nowrap!important}
.hero-refined h1{font-size:clamp(3.4rem,5.6vw,6.2rem)!important;line-height:1.09!important;letter-spacing:-.065em!important;margin:26px 0 20px!important}
.hero-refined .hero-micro{margin-bottom:14px!important}
.hero-refined p{max-width:570px!important;font-size:1.08rem!important;line-height:1.75!important}
.hero-refined .hero-actions{margin-top:26px!important}
.hero-refined .hero-notes{margin-top:32px!important;flex-wrap:wrap!important}
.future-quote{padding:95px 9%!important}
.future-quote p{max-width:980px!important;font-size:clamp(2.5rem,5.3vw,5.5rem)!important}
.why-future-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px;margin-top:46px}
.why-future-card{grid-column:span 2;position:relative;overflow:hidden;min-height:310px;border:1px solid #dcc6e4;background:linear-gradient(150deg,#fff 0%,#f8eef9 100%);padding:30px;border-radius:16px;box-shadow:0 18px 55px #3915440b;transition:transform .25s,box-shadow .25s,border-color .25s}
.why-future-card:nth-child(4),.why-future-card:nth-child(5){grid-column:span 3;min-height:270px}
.why-future-card:hover{transform:translateY(-6px);box-shadow:0 25px 65px #39154420;border-color:#b787d4}
.why-future-card:before{content:"";position:absolute;right:-35px;top:-45px;width:160px;height:160px;border:1px solid #d6b5e3;border-radius:50%;pointer-events:none}
.why-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:36px;color:#8b559c}
.why-card-number{font-size:.7rem;font-weight:800;letter-spacing:.2em}
.why-card-icon{display:grid;place-items:center;font-size:1.6rem;width:48px;height:48px;border:1px solid #d5b8e1;border-radius:13px;background:#f6e8f9;color:#793a8d}
.why-future-card h3{font-size:1.12rem;letter-spacing:.06em;margin:0 0 18px;color:#431c4e}
.why-future-card p{font-size:1rem;line-height:1.85;color:#5b455e;margin:0}
.why-intro{font-size:1.13rem;line-height:1.8;color:#75617b;max-width:720px;margin-top:20px}
.authentic .section-intro{margin-bottom:20px!important}.authentic{padding-top:70px!important}
@media(max-width:950px){.hero.hero-refined{grid-template-columns:1fr 0.9fr!important;min-height:560px!important}.hero-refined .hero-art{height:400px!important;min-height:400px!important}.hero-refined .hero-art .sun{width:min(35vw,340px)!important;height:min(35vw,340px)!important}.hero-refined h1{font-size:clamp(3rem,5.8vw,4.5rem)!important}.why-future-card{grid-column:span 3}.why-future-card:nth-child(4),.why-future-card:nth-child(5){grid-column:span 3}}
@media(max-width:700px){.hero.hero-refined{grid-template-columns:1fr!important;gap:0!important;padding:50px 6% 42px!important;min-height:unset!important}.hero-refined .hero-inner{grid-column:1!important;grid-row:1!important;padding:8px 0 0!important}.hero-refined .hero-art{grid-column:1!important;grid-row:2!important;height:310px!important;min-height:310px!important;position:relative!important;opacity:1!important}.hero-refined .hero-art .sun{width:260px!important;height:260px!important;top:50%!important}.hero-refined h1{font-size:clamp(3rem,11vw,4.5rem)!important}.hero-refined .hero-notes{margin-top:26px!important}.hero-refined .hero-art .orbit1{width:100%!important}.hero-refined .hero-art .art-label{bottom:0!important}.why-future-grid{grid-template-columns:1fr!important}.why-future-card,.why-future-card:nth-child(4),.why-future-card:nth-child(5){grid-column:1!important;min-height:unset!important;padding:26px}.why-card-top{margin-bottom:24px}}
@media(prefers-reduced-motion:reduce){.why-future-card{transition:none}.why-future-card:hover{transform:none}}

/* Editorial refinements: unnumbered home feature cards and process steps */
.home-card-grid article > span:first-child {letter-spacing:.12em;}
.journey-grid article {padding-top:clamp(28px,3vw,42px);}
.journey-grid article h3 {margin-top:0;}

/* FUTURISTIC FOOTER — shared across every page */
.rio-footer-future{position:relative;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 8% 4%,rgba(206,111,224,.19),transparent 40%),radial-gradient(ellipse at 95% 95%,rgba(237,99,165,.15),transparent 45%),#220d2b!important;color:#f4e8f6!important;border-top:1px solid rgba(236,174,251,.3);padding-top:88px!important;padding-bottom:32px!important}
.rio-footer-future::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.23;background-image:linear-gradient(rgba(234,184,247,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(234,184,247,.1) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to bottom,black,transparent 92%);pointer-events:none}
.rio-footer-future::after{content:"";position:absolute;top:-140px;right:-100px;width:360px;height:360px;border:1px solid rgba(235,154,247,.2);border-radius:50%;box-shadow:0 0 0 60px rgba(225,143,255,.025),0 0 0 125px rgba(225,143,255,.02);pointer-events:none}
.rio-footer-future .rio-footer-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1.6fr) minmax(0,.88fr);gap:clamp(26px,5vw,85px)!important;align-items:start}
.rio-footer-future .footer-brand-kicker{display:block;color:#d9a0e9;font-size:10px;font-weight:800;letter-spacing:.22em;margin-bottom:23px}
.rio-footer-future .rio-footer-brand .brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.04em;font-size:clamp(24px,2.4vw,34px);text-decoration:none}
.rio-footer-future .rio-footer-brand .brand-logo{width:57px;height:57px;object-fit:contain;filter:drop-shadow(0 0 13px rgba(249,126,213,.35))}
.rio-footer-future .rio-footer-brand p{color:#d9c2dc;line-height:1.8;max-width:280px;margin:22px 0 50px}
.rio-footer-future .rio-footer-brand small{font-size:12px;color:#b99dc0}
.rio-footer-future h3{font-family:inherit;font-size:clamp(17px,1.65vw,22px);font-weight:750;color:#f4d4fa;letter-spacing:-.02em;margin:5px 0 28px;padding-bottom:16px;border-bottom:1px solid rgba(241,191,247,.2)}
.rio-footer-future .rio-link-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px!important}
.rio-footer-future .rio-link-columns>div{display:flex;flex-direction:column;gap:0}
.rio-footer-future .rio-link-columns a{display:block;position:relative;padding:9px 0 9px 16px!important;color:#e6d3e9!important;font-size:14px;line-height:1.5;text-decoration:none;transition:color .2s,transform .2s}
.rio-footer-future .rio-link-columns a::before{content:"↗";position:absolute;left:0;top:9px;color:#e99be9;font-size:12px;opacity:.65}
.rio-footer-future .rio-link-columns a:hover{color:#fff!important;transform:translateX(4px)}
.rio-footer-future .footer-contact-intro{color:#d8bfdc;line-height:1.75;font-size:13px;margin:-5px 0 22px}
.rio-footer-future .rio-footer-contact a{display:block;width:fit-content;max-width:100%;overflow-wrap:anywhere;color:#f4d5f5!important;text-decoration:none;padding:12px 0;border-bottom:1px solid rgba(238,179,243,.18);transition:color .2s}
.rio-footer-future .rio-footer-contact a:hover{color:white!important}
@media(max-width:950px){.rio-footer-future .rio-footer-grid{grid-template-columns:1fr 1.3fr!important;gap:42px!important}.rio-footer-future .rio-footer-contact{grid-column:1/-1}.rio-footer-future .rio-footer-brand p{margin-bottom:26px}}
@media(max-width:620px){.rio-footer-future{padding:60px 7% 28px!important}.rio-footer-future .rio-footer-grid{grid-template-columns:1fr!important;gap:34px!important}.rio-footer-future .rio-footer-contact{grid-column:auto}.rio-footer-future .rio-link-columns{gap:16px!important}.rio-footer-future .rio-link-columns a{font-size:13px}.rio-footer-future h3{margin-bottom:16px}}
@media(prefers-reduced-motion:reduce){.rio-footer-future .rio-link-columns a{transition:none}}

/* RIOMATH: EDUCATIONAL MATERIAL GALLERY */
.material-showcase{background:linear-gradient(150deg,#fdf8fc 0%,#f6edf8 100%);padding:92px max(5%,24px);color:#351739}.material-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin:0 auto 36px;max-width:1250px}.material-heading h2{font-size:clamp(2.2rem,4vw,4rem);line-height:1.1;margin:16px 0}.material-heading h2 i{color:#a257b2}.material-heading p{max-width:630px;line-height:1.8;color:#735a78}.material-heading-decoration{font-size:clamp(2rem,5vw,5rem);color:#d4b5dc;font-weight:700;white-space:nowrap}.material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;max-width:1250px;margin:auto}.material-card{background:#fff;border:1px solid #ead9ee;border-radius:20px;overflow:hidden;box-shadow:0 14px 40px #5020580b;transition:transform .25s ease,box-shadow .25s ease}.material-card:hover{transform:translateY(-5px);box-shadow:0 20px 48px #5020581d}.material-open{display:block;width:100%;padding:0;text-align:left;border:0;background:transparent;cursor:zoom-in;color:inherit;font:inherit}.material-preview{display:block;height:260px;overflow:hidden;background:#f6dce7}.material-preview img{width:100%;height:100%;object-fit:cover;object-position:top;display:block;transition:transform .35s ease}.material-card:hover img{transform:scale(1.045)}.material-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px}.material-card-bottom strong{display:block;font-size:1.08rem;color:#351739;margin-bottom:6px}.material-card-bottom small{display:block;font-size:.88rem;line-height:1.5;color:#7a6480}.material-zoom{border:1px solid #e7caef;background:#f9eefb;border-radius:12px;width:40px;height:40px;display:grid;place-items:center;flex:none;color:#a14eaf;font-size:1.25rem}.material-footnote{max-width:1250px;margin:24px auto 0;font-size:.86rem;color:#806c85}.material-dialog{border:1px solid #e9d6ee;border-radius:20px;padding:0;width:min(96vw,1000px);max-width:1000px;max-height:94vh;box-shadow:0 30px 100px #1b0a24a8;background:#fff;color:#351739}.material-dialog::backdrop{background:#16081dd9;backdrop-filter:blur(6px)}.material-dialog-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 22px;border-bottom:1px solid #eee1f0}.material-close{background:#f4e5f6;border:0;border-radius:10px;padding:10px 15px;cursor:pointer;color:#4c2152;font-size:1.1rem}.material-dialog-image{overflow:auto;max-height:calc(94vh - 70px);text-align:center}.material-dialog-image img{display:block;max-width:100%;height:auto;margin:auto}@media(max-width:900px){.material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.material-preview{height:230px}}@media(max-width:620px){.material-showcase{padding:62px 20px}.material-heading-decoration{display:none}.material-grid{grid-template-columns:1fr;gap:16px}.material-preview{height:230px}.material-card-bottom{padding:18px}.material-dialog{width:98vw;max-height:92vh}.material-dialog-image{max-height:calc(92vh - 70px)}}@media(prefers-reduced-motion:reduce){.material-card,.material-preview img{transition:none}}

/* RioMath / Degree tracker and floating contact */
.degree-section{background:linear-gradient(135deg,#fbf5fc 0%,#f4e9f7 100%);padding:clamp(64px,7vw,112px) max(24px,calc((100vw - 1180px)/2));color:#32163b}
.degree-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:32px}
.degree-heading h2{font-size:clamp(2rem,4vw,3.6rem);line-height:1.12;margin:14px 0 20px}
.degree-heading h2 i{color:#a667b5}
.degree-heading p{max-width:650px;line-height:1.8;color:#68536e}
.degree-heading-icon{font-size:5rem;color:#caa4d7}
.degree-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,5vw,65px);padding:clamp(24px,4vw,48px);border:1px solid #e4cbe9;border-radius:24px;background:rgba(255,255,255,.85);box-shadow:0 20px 70px rgba(72,22,83,.08)}
.degree-fields{display:flex;flex-direction:column;gap:12px;justify-content:center}
.degree-fields label{font-size:.92rem;font-weight:700;color:#4b2656;margin-top:8px}
.degree-fields input[type=number]{width:100%;padding:14px 18px;border:1px solid #dfc6e6;border-radius:12px;background:#fff;color:#32163b;font:inherit;font-size:1.2rem}
.degree-fields input[type=number]:focus-visible,.degree-fields input[type=range]:focus-visible,.rio-contact-toggle:focus-visible,.rio-contact-options a:focus-visible{outline:3px solid #bc78d1;outline-offset:3px}
.degree-fields input[type=range]{width:100%;accent-color:#a75cc1;margin:12px 0;cursor:pointer}
.degree-hint,.degree-privacy{font-size:.82rem;line-height:1.65;color:#7d6982}
.degree-privacy{margin:16px 0 0}
.degree-results{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:16px;border-radius:18px;background:linear-gradient(160deg,#f6eafa,#fff);padding:28px}
.degree-ring{--degree-pct:0%;width:190px;height:190px;border-radius:50%;background:conic-gradient(#a45bc0 var(--degree-pct),#ead8ef var(--degree-pct));display:grid;place-items:center}
.degree-ring-inner{width:157px;height:157px;border-radius:50%;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.degree-ring-inner strong{font-size:3rem;line-height:1;color:#572b65}
.degree-ring-inner span{font-size:.7rem;letter-spacing:.2em;margin-top:12px;color:#a065af}
.degree-results p{margin:0;color:#674c70}.degree-results p strong{font-size:2rem;color:#4b2259}
.degree-motivation{font-weight:600;color:#844a97;font-size:.95rem}
.rio-contact-widget{position:fixed;right:clamp(14px,3vw,32px);bottom:clamp(14px,3vw,30px);z-index:9998;display:flex;align-items:flex-end;flex-direction:column;gap:12px;font-family:inherit}
.rio-contact-toggle{display:flex;align-items:center;gap:10px;background:linear-gradient(125deg,#552260,#9e4bb6);color:#fff;border:1px solid #d4a3e4;border-radius:999px;padding:11px 20px 11px 12px;box-shadow:0 10px 35px rgba(57,19,73,.3);cursor:pointer;font:inherit;font-weight:700;transition:transform .2s,box-shadow .2s}
.rio-contact-toggle:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(57,19,73,.38)}
.rio-contact-bubble{display:grid;place-items:center;background:#ffffff2c;border-radius:50%;width:32px;height:32px;font-size:1.15rem}
.rio-contact-options{width:min(300px,calc(100vw - 28px));padding:18px;background:#2a1234;border:1px solid #9255a7;border-radius:18px;box-shadow:0 20px 45px #19091d55;color:#fff}
.rio-contact-options[hidden]{display:none!important}
.rio-contact-caption{display:block;font-size:.8rem;color:#e6c5f0;margin-bottom:12px}
.rio-contact-options a{display:flex;gap:12px;align-items:center;color:#fff!important;text-decoration:none!important;padding:12px 10px;border-radius:10px;transition:background .2s}
.rio-contact-options a:hover{background:#ffffff1c}
@media(max-width:700px){.degree-heading-icon{display:none}.degree-panel{grid-template-columns:1fr}.degree-results{padding:25px 12px}.degree-ring{width:165px;height:165px}.degree-ring-inner{width:136px;height:136px}.degree-ring-inner strong{font-size:2.4rem}.rio-contact-toggle{padding:9px 14px 9px 9px;font-size:.88rem}.rio-contact-bubble{width:29px;height:29px}}
@media(prefers-reduced-motion:reduce){.rio-contact-toggle{transition:none}}

/* Official degree and library pages */
.rio-subhero{padding:110px max(6vw,24px) 75px;background:linear-gradient(130deg,#24102c,#4d215e);color:#fff}.rio-subhero h1{font-size:clamp(2.5rem,5vw,5rem);line-height:1.08;max-width:900px}.rio-subhero h1 i{color:#f2a5d6}.rio-subhero p{max-width:680px;color:#e4d1e9;line-height:1.8}.rio-new-hub{background:#f9f2fa}.rio-hub-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:34px}.rio-hub-grid>a{display:block;border:1px solid #e8cde9;border-radius:22px;padding:34px;background:#fff;color:#32173c;text-decoration:none;transition:transform .2s,box-shadow .2s}.rio-hub-grid>a:hover{transform:translateY(-5px);box-shadow:0 18px 50px #6a367522}.rio-hub-grid p{line-height:1.75}.hub-symbol{font-size:2.8rem;color:#ae6bc3}.rio-hub-grid b{color:#9549ac}.official-tracker{background:#fcf8fd}.rule-head{max-width:820px;margin-bottom:32px}.rule-head>span{color:#9b56af;letter-spacing:.13em;font-size:.8rem;font-weight:700}.rule-head h2{font-size:clamp(2rem,4vw,3.7rem)}.rule-head p{line-height:1.8}.official-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.official-form,.official-results,.rules-grid article{background:white;border:1px solid #ead5ee;border-radius:24px;padding:32px;box-shadow:0 12px 45px #3913400a}.official-form label{display:block;font-size:.9rem;font-weight:650;margin:18px 0 8px}.official-form input:not([type=checkbox]),.official-form select{width:100%;padding:13px 15px;border:1px solid #d7badc;border-radius:12px;font:inherit;background:#fff;color:#32173c}.official-form .check-line{display:flex;align-items:center;gap:10px}.official-results{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;text-align:center}.official-ring{--p:0%;width:220px;height:220px;border-radius:50%;background:conic-gradient(#b45bc9 var(--p),#eadcec 0);display:flex;flex-direction:column;justify-content:center;align-items:center;position:relative;isolation:isolate}.official-ring:before{content:'';position:absolute;inset:14px;background:#fff;border-radius:50%;z-index:-1}.official-ring span{font-size:3.2rem;font-weight:800;color:#4d215e}.official-ring small{color:#87658e}.metric-pair{display:flex;justify-content:space-around;width:100%;gap:12px}.metric-pair div{display:flex;flex-direction:column;gap:7px}.metric-pair strong{font-size:1.6rem;color:#4d215e}.official-progress{height:9px;background:#eee0f0;border-radius:99px;overflow:hidden;width:100%}.official-progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,#8d44ae,#e58ac4);transition:width .2s}.hint,.source-note{font-size:.84rem;color:#77617d;line-height:1.7}.rules-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px}.rules-grid article p{line-height:1.8}.source-note{margin-top:24px}.rio-extra-links{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px}.rio-extra-links a{color:#e8b9ef;text-decoration:none}.rio-extra-links a:hover{text-decoration:underline}.material-showcase{padding-top:65px;padding-bottom:80px}@media(max-width:750px){.rio-hub-grid,.official-grid,.rules-grid{grid-template-columns:1fr}.rio-subhero{padding:90px 22px 55px}.official-form,.official-results,.rules-grid article{padding:22px}.official-ring{width:190px;height:190px}}

/* RioMath grade laboratory */
.grade-section{max-width:1320px;margin:0 auto;padding:78px clamp(20px,5vw,76px) 95px}.grade-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:32px}.grade-heading h2{font-size:clamp(32px,4.4vw,58px);line-height:1.1;margin:12px 0}.grade-heading h2 i{color:#a868c2}.grade-heading p{max-width:680px;line-height:1.7;color:#725c78}.grade-formula{white-space:nowrap;border:1px solid #e6d1ed;border-radius:18px;padding:18px 22px;background:#fbf4ff;color:#723f87;font-weight:700}.grade-workspace{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.8fr);gap:20px}.grade-editor,.grade-summary{border:1px solid #eadbea;border-radius:24px;padding:clamp(18px,3vw,32px);background:white;box-shadow:0 12px 35px #3211390b}.grade-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.grade-toolbar h3{margin:0;font-size:23px}.grade-actions{display:flex;gap:8px;flex-wrap:wrap}.grade-actions button{border:0;border-radius:12px;padding:11px 14px;background:#60236f;color:white;cursor:pointer;font:inherit;font-size:13px}.grade-actions .grade-muted{background:#f2e9f5;color:#582a67}.grade-hint,.grade-demo{font-size:13px;color:#806b83;line-height:1.6}.grade-table-wrap{overflow-x:auto;margin-top:16px}.grade-table{width:100%;border-collapse:separate;border-spacing:0 9px;min-width:580px}.grade-table th{font-size:11px;letter-spacing:.08em;color:#896992;text-align:left;padding:0 5px}.grade-table td{padding:2px 4px}.grade-table input,.grade-table select{width:100%;min-width:0;box-sizing:border-box;padding:11px 9px;border:1px solid #e5d6e7;border-radius:10px;background:#fdfaff;color:#33143b;font:inherit;font-size:13px}.grade-table .grade-name{min-width:145px}.grade-table .grade-score{width:85px}.grade-table .grade-ects{width:70px}.grade-table .grade-status{min-width:132px}.grade-delete{border:0;border-radius:9px;background:#fae8f0;color:#8a2e65;font-size:24px;cursor:pointer;padding:4px 12px}.grade-invalid input,.grade-invalid select{border-color:#d45870}.grade-validation{font-size:13px;color:#9d314f}.grade-summary{background:linear-gradient(150deg,#2a1037,#4d205b 70%,#6d357b);color:#fff}.grade-eyebrow{letter-spacing:.17em;font-size:11px;color:#e7b6f3}.grade-number{font-size:clamp(52px,6vw,86px);font-weight:800;line-height:1.15;margin:18px 0 0;color:#fff}.grade-caption{font-size:13px;color:#dec4e5}.grade-separator{height:1px;background:#ffffff2b;margin:24px 0}.grade-stat{display:flex;justify-content:space-between;gap:10px;padding:7px 0;font-size:14px}.grade-stat strong{font-size:19px}.grade-projected{color:#f1a9d8}.grade-note{margin-top:24px;color:#e0c8e7;font-size:12px;line-height:1.7}.grade-rules{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}.grade-rules article{background:#faf2fc;border:1px solid #e9d9ee;border-radius:18px;padding:22px}.grade-rules article span{display:block;font-size:10px;letter-spacing:.13em;color:#965eaa;margin-bottom:12px}.grade-rules article strong{color:#482353;font-size:18px}.grade-rules article p{font-size:13px;line-height:1.65;color:#78647d}.grade-source{font-size:12px;color:#816d83;line-height:1.7;margin-top:22px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:850px){.grade-workspace{grid-template-columns:1fr}.grade-heading{display:block}.grade-formula{display:inline-block;white-space:normal}.grade-rules{grid-template-columns:1fr}}@media(max-width:560px){.grade-section{padding:50px 16px}.grade-editor,.grade-summary{padding:20px}.grade-actions button{font-size:12px}}


/* RIO / LIBRARY 2.0 — responsive editorial archive */
.library-hero{position:relative;isolation:isolate;display:grid;grid-template-columns:1.08fr .92fr;min-height:475px;overflow:hidden;background:#24102e;color:#fff;padding:clamp(42px,7vw,96px) max(6%,calc((100vw - 1200px)/2));gap:35px}
.library-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 40%,#ab64b333,transparent 39%),linear-gradient(120deg,transparent 40%,#d896e00b 100%);pointer-events:none;z-index:-1}
.library-hero-copy{position:relative;z-index:2;max-width:690px}.library-eyebrow{font-size:11px;font-weight:800;letter-spacing:.18em;color:#d6a3e6}.library-spark{font-size:18px;color:#e9a4ca;margin-right:7px}.library-hero h1{font-size:clamp(47px,5.8vw,83px);line-height:1.06;letter-spacing:-.05em;margin:25px 0}.library-hero h1 i{font-weight:400;color:#efb6db}.library-hero-copy>p{font-size:clamp(15px,1.5vw,18px);line-height:1.9;color:#d7c4dd;max-width:600px}.library-hero-bottom{display:flex;align-items:center;gap:30px;flex-wrap:wrap;margin-top:35px}.library-hero-cta{background:#e9b3dc;color:#28142e!important;text-decoration:none;padding:15px 23px;border-radius:12px;font-weight:800;display:inline-flex;gap:25px;align-items:center;transition:transform .2s,background .2s}.library-hero-cta:hover{transform:translateY(-3px);background:#f7d5ef}.library-hero-count{color:#c5a8cc;font-size:13px}.library-hero-count b{color:white;font-size:21px;margin-right:7px}.library-hero-visual{position:relative;min-height:310px;display:grid;place-items:center}.library-orbit{position:absolute;border:1px solid #d9a4e45c;border-radius:50%;width:300px;height:300px}.library-orbit-a{transform:rotate(-26deg) scaleX(.65)}.library-orbit-b{transform:rotate(26deg) scaleX(.65)}.library-visual-icon{font-family:Georgia,serif;font-size:clamp(140px,17vw,240px);font-weight:400;line-height:1;color:#edb2e7;text-shadow:0 0 90px #d682e099}.library-visual-tag{position:absolute;bottom:15px;right:0;font-size:10px;letter-spacing:.2em;color:#bfa0c8}
.library-main{background:linear-gradient(165deg,#fcf9fd,#f5edf8 75%,#faf6fb);padding:clamp(45px,7vw,90px) max(5%,calc((100vw - 1220px)/2)) 90px}.library-intro{display:grid;grid-template-columns:1fr .75fr;gap:45px;align-items:end;margin-bottom:35px}.library-section-index{font-size:11px;letter-spacing:.18em;font-weight:800;color:#a46eb5}.library-intro h2{font-size:clamp(36px,4.2vw,61px);line-height:1.13;letter-spacing:-.045em;color:#2e1737;margin:15px 0 0}.library-intro h2 i{color:#9b5aa8}.library-intro>p{color:#755d7b;font-size:16px;line-height:1.8;max-width:450px}.library-filterbar{display:flex;gap:9px;flex-wrap:wrap;padding:0 0 26px;margin-bottom:24px;border-bottom:1px solid #e6d7e9}.library-filter{border:1px solid #e4d2e8;background:white;color:#674a70;border-radius:999px;padding:11px 18px;font:inherit;font-size:13px;font-weight:750;cursor:pointer;transition:all .2s}.library-filter:hover{border-color:#b37dc3}.library-filter.active{background:#301739;color:#fff;border-color:#301739}.library-filter span{opacity:.65;margin-left:6px}.library-collection{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.library-item{min-width:0;background:#fff;border:1px solid #eadbeb;border-radius:20px;overflow:hidden;box-shadow:0 14px 35px #43204a0b;transition:transform .2s,box-shadow .2s}.library-item:hover{transform:translateY(-5px);box-shadow:0 22px 45px #43204a1c}.library-item-button{display:flex;flex-direction:column;text-align:left;width:100%;height:100%;padding:0;border:0;background:none;cursor:pointer;color:inherit;font:inherit}.library-item-image{display:flex;align-items:flex-start;justify-content:center;height:250px;overflow:hidden;padding:20px 17px 0;background:#f3ebfa;width:100%}.library-item-image img{display:block;width:100%;height:100%;object-fit:contain;object-position:top center;filter:drop-shadow(0 8px 14px #2c15351a);transition:transform .3s}.library-item:hover .library-item-image img{transform:scale(1.035)}.library-item-image.sky{background:#e9e9ff}.library-item-image.gold{background:#fff7d8}.library-item-image.mint{background:#e2f9e7}.library-item-image.aqua{background:#ddfbfa}.library-item-info{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:23px 20px 25px;width:100%;flex:1}.library-item-copy{display:flex;flex-direction:column;gap:8px}.library-item-eyebrow{font-size:10px;font-weight:800;letter-spacing:.16em;color:#a37ab1}.library-item-copy strong{font-size:19px;line-height:1.25;color:#2c1533}.library-item-copy small{font-size:13px;color:#7b6580;line-height:1.5}.library-item-arrow{display:grid;place-items:center;flex-shrink:0;width:37px;height:37px;background:#f5eaf8;border:1px solid #ead8ef;border-radius:12px;color:#854b98;font-size:21px}.library-item-featured{grid-column:span 2}.library-item-featured .library-item-image{height:330px}.library-item-featured .library-item-copy strong{font-size:24px}.library-endnote{display:flex;gap:18px;align-items:center;flex-wrap:wrap;background:#301739;color:#e6d7e9;border-radius:20px;margin-top:35px;padding:25px 30px}.library-endnote>span{font-size:32px;color:#e7aedb}.library-endnote p{flex:1;min-width:240px;line-height:1.65;font-size:14px;margin:0}.library-endnote a{color:#fff!important;font-weight:800;text-decoration:underline;text-underline-offset:4px}.material-dialog{max-width:min(1050px,94vw);max-height:92vh;border:1px solid #dfcbe4;border-radius:18px;padding:0;box-shadow:0 30px 110px #1b092c88;background:#fff}.material-dialog::backdrop{background:#170a24c9;backdrop-filter:blur(5px)}.material-dialog-top{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:#2b1436;color:white;gap:20px}.material-close{cursor:pointer;border:0;border-radius:10px;background:#f1d3ed;color:#2b1436;padding:9px 13px;font-size:18px}.material-dialog-image{padding:18px;max-height:calc(92vh - 68px);overflow:auto}.material-dialog-image img{display:block;max-width:100%;height:auto;margin:auto}
@media(max-width:950px){.library-hero{grid-template-columns:1fr .6fr}.library-collection{grid-template-columns:repeat(2,minmax(0,1fr))}.library-item-featured{grid-column:span 2}.library-hero-visual{min-height:250px}.library-orbit{width:230px;height:230px}.library-visual-icon{font-size:160px}}
@media(max-width:680px){.library-hero{grid-template-columns:1fr;padding:52px 6% 42px;gap:0}.library-hero-visual{min-height:140px;margin-top:10px}.library-orbit{width:140px;height:140px}.library-visual-icon{font-size:100px}.library-visual-tag{display:none}.library-hero h1{font-size:clamp(43px,11vw,60px)}.library-main{padding:52px 5% 65px}.library-intro{grid-template-columns:1fr;gap:10px}.library-collection{grid-template-columns:1fr;gap:17px}.library-item-featured{grid-column:span 1}.library-item-image,.library-item-featured .library-item-image{height:280px}.library-filterbar{gap:7px}.library-filter{padding:10px 13px;font-size:12px}.library-endnote{padding:22px}}
@media(prefers-reduced-motion:reduce){.library-item,.library-item-image img,.library-hero-cta{transition:none}}

/* RioMath final refinements */
.library-hero{grid-template-columns:1fr!important;min-height:0!important;padding-top:clamp(42px,6vw,76px)!important;padding-bottom:clamp(44px,6vw,72px)!important}
.library-hero-copy{max-width:960px!important}
.library-hero h1{font-size:clamp(2.4rem,5.2vw,5.4rem)!important;line-height:1.12!important;letter-spacing:-.035em!important}
.library-intro h2{font-size:clamp(2rem,4vw,3.7rem)!important;line-height:1.16!important}
.rio-footer-future .rio-link-columns{grid-template-columns:repeat(2,minmax(0,1fr))!important}
.library-item-copy small:empty{display:none!important}
@media(max-width:620px){.library-hero h1{font-size:clamp(2.25rem,9vw,3.5rem)!important}.rio-footer-future .rio-link-columns{column-gap:10px!important}}

/* OCT 30 PREMIUM BRAND REFRESH */
.specialization{display:flex!important;align-items:center!important;gap:1.5rem!important;padding-top:3.4rem!important;padding-bottom:3.4rem!important}
.specialization>div:last-child{max-width:850px;margin:auto}
.specialization h2{font-size:clamp(2rem,4vw,3.3rem)!important;line-height:1.12!important;letter-spacing:-.035em!important}
.strip{display:flex!important;flex-wrap:wrap!important;justify-content:space-evenly!important;gap:1rem 1.5rem!important}
.strip span{white-space:normal!important;text-align:center!important}
.hero-art .graph{display:none!important}
.brand .rio-emblem{position:relative;display:inline-block;vertical-align:middle;width:45px;height:45px;min-width:45px;border-radius:50%;overflow:hidden;background:radial-gradient(circle at 50% 38%,#4a2054 0%,#25102d 75%);box-shadow:0 0 0 1px #e7a6df70,0 0 18px #e66fba33;isolation:isolate}
.rio-emblem-sun{position:absolute;left:10%;top:11%;width:80%;height:80%;border-radius:50%;background:linear-gradient(180deg,#ffb7d5 0%,#f47fba 45%,#ba3e91 100%);-webkit-mask-image:repeating-linear-gradient(to bottom,#000 0 59%,transparent 59% 63%,#000 63% 71%,transparent 71% 75%,#000 75% 81%,transparent 81% 85%,#000 85% 89%,transparent 89% 93%,#000 93% 100%);mask-image:repeating-linear-gradient(to bottom,#000 0 59%,transparent 59% 63%,#000 63% 71%,transparent 71% 75%,#000 75% 81%,transparent 81% 85%,#000 85% 89%,transparent 89% 93%,#000 93% 100%)}
.rio-emblem-orbit{position:absolute;inset:3px -8px;border:1px solid #e4a1d6aa;border-radius:50%;transform:rotate(-35deg);pointer-events:none}
footer .brand .rio-emblem{width:52px;height:52px;min-width:52px}
@media(max-width:680px){.specialization{padding:2.2rem 1.25rem!important}.brand .rio-emblem{width:38px;height:38px;min-width:38px}.strip{gap:.9rem!important}.strip span{font-size:.72rem!important}}


/* RioMath | Elegant Motion & Specialization, 30 Oct 2026 */
.specialization.specialization-premium{display:grid!important;grid-template-columns:minmax(0,1.3fr) minmax(260px,.7fr)!important;gap:clamp(18px,4vw,62px)!important;align-items:center!important;padding:clamp(48px,6vw,82px) max(5%,calc((100vw - 1260px)/2))!important;background:linear-gradient(115deg,#f9edf5,#f1e4f4 80%)!important;overflow:hidden}
.specialization-premium .specialization-copy{max-width:800px!important;margin:0!important;min-width:0}
.specialization-premium .specialization-titleline{display:flex;align-items:center;gap:clamp(18px,3vw,36px);margin:14px 0 18px;flex-wrap:wrap}
.specialization-premium .specialization-percent{display:inline-flex;align-items:flex-start;white-space:nowrap;font-family:Georgia,'Times New Roman',serif;font-weight:400;font-size:clamp(88px,10.5vw,156px);letter-spacing:-.085em;line-height:.88;background:linear-gradient(125deg,#713064 10%,#bd6a9e 85%);background-clip:text;-webkit-background-clip:text;color:transparent;padding-right:.08em}
.specialization-premium .specialization-percent sup{font-family:'DM Sans',sans-serif;font-weight:700;letter-spacing:-.05em;font-size:.32em;line-height:1;margin:.08em 0 0 .08em}
.specialization-premium h2{font-size:clamp(32px,3.9vw,56px)!important;line-height:1.05!important;margin:0!important;letter-spacing:-.05em!important;white-space:normal}
.specialization-premium .specialization-copy>p{max-width:720px;font-size:clamp(15px,1.35vw,18px);line-height:1.8;margin:0;color:#684968}
.specialization-math-art{width:100%;max-width:440px;justify-self:end;border:1px solid #d8b7d8aa;border-radius:24px;background:radial-gradient(circle at 58% 50%,#fff8ff,#f5e6f5 65%,#f0dced);box-shadow:0 20px 55px #5e235817;overflow:hidden;transform:rotate(-1deg)}
.specialization-math-art svg{display:block;width:100%;height:auto}
/* Delicate sunrise warmth on both brand emblems, without changing the identity. */
.brand .rio-emblem-sun{background:linear-gradient(180deg,#ffd1c3 0%,#ffb38e 22%,#f69ca9 44%,#e777ab 62%,#a94791 100%)!important}
.brand .rio-emblem{box-shadow:0 0 0 1px #e7a6df70,0 0 16px #f4a08535!important}
/* Subtle floating/pointer-responsive motion; CSS variables are updated by the enhancement script. */
.hero-refined .hero-art{--rio-drift-x:0px;--rio-drift-y:0px;transform:translate3d(var(--rio-drift-x),var(--rio-drift-y),0)!important;transition:transform .45s ease-out;will-change:transform}
.hero-refined .hero-art .orbit{animation:rio-orbit-soft 10s ease-in-out infinite alternate!important}
.hero-refined .hero-art .orbit2{animation-delay:-4s!important}
@keyframes rio-orbit-soft{from{opacity:.38;filter:brightness(.95)}to{opacity:.72;filter:brightness(1.12)}}
@media(max-width:850px){.specialization.specialization-premium{grid-template-columns:1fr!important}.specialization-math-art{justify-self:start;max-width:360px}.specialization-premium .specialization-percent{font-size:clamp(88px,16vw,125px)}}
@media(max-width:600px){.specialization.specialization-premium{padding:45px 6%!important;gap:26px!important}.specialization-premium .specialization-titleline{gap:12px}.specialization-premium .specialization-percent{font-size:clamp(82px,21vw,112px)}.specialization-premium h2{font-size:clamp(30px,7vw,44px)!important}.specialization-math-art{max-width:100%}}
@media(prefers-reduced-motion:reduce){.hero-refined .hero-art{transform:none!important;transition:none!important;will-change:auto}.hero-refined .hero-art .orbit{animation:none!important}}

/* RioMath — requested refinements, Oct 30 */
.rio-subhero-deep{background:radial-gradient(circle at 78% 8%,rgba(157,86,165,.3),transparent 48%),linear-gradient(125deg,#230e2c 0%,#37173e 70%,#24102d 100%)!important;min-height:340px;position:relative;overflow:hidden;}
.rio-subhero-deep::after{content:"";position:absolute;width:440px;height:440px;right:3%;top:-230px;border:1px solid rgba(225,172,233,.16);border-radius:50%;pointer-events:none;}
.rio-subhero-deep h1,.rio-subhero-deep p{position:relative;z-index:1;}
.rio-contact-toggle{min-width:0;}
.rio-contact-toggle span:last-child{white-space:nowrap;}
@media(max-width:650px){.rio-subhero-deep{min-height:0;padding-top:85px;padding-bottom:58px;}.rio-subhero-deep::after{width:240px;height:240px;top:-130px;right:-100px;}}

/* PDF typologia integrated into their existing subject cards */
.library-attached-pdf{display:block;margin:10px 12px 14px;padding:12px 14px;border:1px solid rgba(190,130,235,.32);border-radius:10px;color:inherit;text-decoration:none;font-weight:600;font-size:.9rem;transition:background .2s,border-color .2s}
.library-attached-pdf:hover,.library-attached-pdf:focus-visible{background:rgba(190,130,235,.12);border-color:rgba(190,130,235,.7)}

/* Library course folders: keep existing cards, group their materials in a dialog */
.library-folder-dialog{width:min(580px,94vw);max-height:90vh;border:1px solid #dfcbe4;border-radius:18px;padding:0;background:#fff;box-shadow:0 30px 110px #1b092c88}
.library-folder-dialog::backdrop{background:#170a24c9;backdrop-filter:blur(5px)}
.library-folder-body{padding:24px}.library-folder-body>p{margin:0 0 18px;color:#765f7c}
.library-folder-contents{display:grid;gap:12px}
.library-folder-file{display:flex;align-items:center;gap:16px;text-align:left;width:100%;padding:18px;border:1px solid #e8d9ec;border-radius:14px;background:#fbf7fd;color:#301739;text-decoration:none;font:inherit;cursor:pointer;transition:background .2s,border-color .2s}
.library-folder-file:hover,.library-folder-file:focus-visible{background:#f3e8f8;border-color:#b887c8}
.library-folder-file-icon{display:grid;place-items:center;flex-shrink:0;width:54px;height:54px;border-radius:12px;background:#e9d6ef;color:#653478;font-size:16px;font-weight:800}
.library-folder-file>span:nth-child(2){flex:1;min-width:0}.library-folder-file strong,.library-folder-file small{display:block}.library-folder-file strong{font-size:15px;line-height:1.4}.library-folder-file small{margin-top:5px;font-size:12px;color:#806b85}


/* Library update: independent Exercises/Topics and Formula Sheets collections. */
.library-type-switch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:0 0 42px}
.library-type-tab{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:12px;min-height:165px;padding:25px 28px;text-align:left;border:1px solid #e1cce7;border-radius:19px;background:#fff;color:#2e1737;box-shadow:0 12px 32px #43204a0a;cursor:pointer;transition:background .2s,border-color .2s,transform .2s,box-shadow .2s}
.library-type-tab:hover{transform:translateY(-3px);border-color:#ad75bc;box-shadow:0 18px 36px #43204a15}
.library-type-tab:focus-visible,.library-filter:focus-visible,.library-item-button:focus-visible{outline:3px solid #b85bbd;outline-offset:3px}
.library-type-tab.active{background:linear-gradient(125deg,#301739,#54275b);border-color:#54275b;color:#fff;box-shadow:0 16px 38px #43204a25}
.library-type-index{font-size:10px;font-weight:800;letter-spacing:.16em;color:#9565a4}
.library-type-tab.active .library-type-index{color:#dcb5e6}
.library-type-tab>strong{font-family:'Manrope',sans-serif;font-size:clamp(20px,2.4vw,28px);letter-spacing:-.035em;line-height:1.2}
.library-type-meta{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:#79647d}
.library-type-tab.active .library-type-meta{color:#e7d0ed}
.library-type-meta span{font-size:22px}
.library-panel[hidden]{display:none!important}
.library-panel-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin:0 0 24px}
.library-panel-heading h3{font-family:'Manrope',sans-serif;font-size:clamp(25px,3vw,37px);letter-spacing:-.04em;line-height:1.2;margin:12px 0 0}
.library-panel-heading h3 i{font-family:Georgia,serif;font-weight:400;color:#9b5aa8}
.library-panel-heading p{max-width:355px;color:#755d7b;font-size:14px;line-height:1.75;margin:0}
.library-typology-collection{grid-template-columns:repeat(2,minmax(0,1fr))}
.library-pdf-cover{align-items:center;justify-content:center;padding:23px;background-image:radial-gradient(circle at 75% 30%,#ffffffab,transparent 48%)}
.library-pdf-paper{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;gap:14px;width:min(235px,86%);min-height:205px;padding:22px 21px;background:linear-gradient(155deg,#fff,#fbf7ff);border:1px solid #e6dbea;border-radius:7px;box-shadow:12px 14px 25px #35183d26;transform:rotate(-3deg);transition:transform .25s}
.library-item:hover .library-pdf-paper{transform:rotate(-1deg) translateY(-4px)}
.library-pdf-mark{font-family:Georgia,serif;font-size:clamp(35px,4vw,52px);line-height:1;color:#a05ca9;letter-spacing:-.06em}
.library-pdf-paper-title{font-family:'Manrope',sans-serif;font-size:17px;font-weight:800;line-height:1.3;letter-spacing:-.025em;color:#31183c}
.library-pdf-paper-caption{font-size:9px;font-weight:800;letter-spacing:.16em;color:#a075ae;border-top:1px solid #eadfea;padding-top:9px;width:100%}
.library-item-featured .library-pdf-paper{min-height:270px;width:min(270px,86%);padding:30px}
.library-item-featured .library-pdf-paper-title{font-size:23px}
.library-item-button[href]{text-decoration:none}
@media(max-width:800px){.library-panel-heading{flex-direction:column;align-items:start;gap:10px}.library-panel-heading p{max-width:650px}}
@media(max-width:680px){.library-type-switch{grid-template-columns:1fr;gap:12px;margin-bottom:30px}.library-type-tab{min-height:135px;padding:20px 22px;gap:9px}.library-typology-collection{grid-template-columns:1fr}.library-item-featured .library-pdf-paper{min-height:210px}}
@media(prefers-reduced-motion:reduce){.library-type-tab,.library-pdf-paper{transition:none}}

/* Algebra 1: one image preview, not a multi-page PDF. */
.library-item-algebra .library-item-image{padding:0;background:#e9f7e9}
.library-item-algebra .library-item-image img{width:100%;height:100%;object-fit:cover;object-position:top center;filter:none}