/* Indigo and teal: shared colour tokens for the refreshed study hub. */
:root{--navy:#252051;--ink:#262641;--muted:#5d6278;--blue:#5541b8;--line:#e0e2ee;--soft:#f5f6fa;--white:#fff;--lime:#a2f3e6;--teal:#087a75;--teal-soft:#e5f5f1;--indigo-soft:#efecfb;--shadow:0 14px 38px #31246b0a}
body{background:#fbfcff;color:var(--ink)}
:focus-visible{outline:3px solid #7963d8;outline-offset:4px}
a,button,input,select,summary{-webkit-tap-highlight-color:#b2e6e455}
.announcement{background:#211c45;color:#dedff3}.announcement-inner{min-height:34px}.announcement a{color:#eff2ff}
.site-header{background:#fffffff5;border-color:#e5e4ef}.brand b{color:#282254}.brand em{color:#087a75}.brand small{color:#666b80}.site-nav a{color:#555a70}.site-nav a:hover,.site-nav a.current{color:#5541b8}.site-nav .header-cta{background:#5541b8;border-radius:12px;color:white;box-shadow:0 5px 14px #5541b816}.site-nav .header-cta:hover{background:#433295!important}.menu-button{border-color:#dedfea}.menu-button span{background:#352c62}
.hero{background:linear-gradient(115deg,#292057 0%,#353078 58%,#145d69 100%);color:#fff}.hero-grid-texture{background:radial-gradient(ellipse at 90% 12%,#60cfc61f,transparent 60%)}.hero-layout{grid-template-columns:1.1fr .9fr;gap:70px;padding-block:54px 72px}.hero h1{font-size:clamp(46px,4.5vw,66px);line-height:1.08;letter-spacing:-.045em;max-width:690px;margin:22px 0}.hero h1 span{color:#a2f3e6}.hero-eyebrow{color:#dbdaf4}.hero-lead{color:#e0e2f2;font-size:17px;max-width:580px}.hero-meta{color:#d4d6ee}.hero-meta svg{color:#a2f3e6}.hero .button-hot,.join-section .button-hot{background:#a2f3e6;color:#16373f;box-shadow:0 8px 24px #0f3a4430}.hero .button-hot:hover,.join-section .button-hot:hover{background:#bafaf0}.hero .button-outline,.join-section .button-outline{color:#fff;border-color:#c4c1e280;background:#ffffff08}.hero .button-outline:hover,.join-section .button-outline:hover{background:#ffffff14}.button{border-radius:12px}.button-navy{background:#5541b8;color:white}.button-navy:hover{background:#433295}.button-light{background:#f0edfa;border-color:#ddd6f1;color:#433b73}
.focus-desk{background:#fff;border-color:#fff;box-shadow:0 24px 65px #19113029;transform:none;border-radius:22px;padding:27px}.desk-heading{border-color:#e5e2f1}.desk-heading .eyebrow{color:#675993}.desk-year{background:#eeeaf9;color:#4d3e8a}.focus-desk h2{color:#292342;font-size:26px;letter-spacing:-.75px}.timer-modes{background:#f2effa}.timer-modes button{color:#666075}.timer-modes button[aria-pressed="true"]{color:#513ead;background:white;box-shadow:0 2px 8px #40317e10}.timer-display{color:#352c68;font-size:clamp(60px,5.5vw,76px);letter-spacing:-.045em;margin-block:14px}.timer-actions .button{background:#5541b8;box-shadow:0 7px 15px #5541b81c}.timer-actions .button:hover{background:#433295}.timer-reset,#timer-status{color:#64647a}.focus-desk .desk-footer{border-color:#e8e5f2}.desk-footer span{color:#706789}#resume-study{color:#08746f}#focus-timer{scroll-margin-top:106px}
.quick-cards{border-color:#e2e2ef;box-shadow:0 16px 35px #35306109;border-radius:16px}.quick-card{border-color:#e2e2ef}.quick-icon{color:#5c4e9c;background:#f0edf9}.quick-card b{color:#34324a}.quick-card:hover b{color:#087a75}.quick-arrow{color:#087a75}
.section{padding-block:76px}.section h2{color:#292641}.section h2 span{color:#5541b8}.eyebrow{color:#685795}.section-header p{color:#60647b}.link-button{color:#5541b8;background:#fff;border-color:#d9d0ee;border-radius:10px}.link-button:hover{background:#f4f0fc}
.learning-overview{background:linear-gradient(110deg,#fff 52%,#f3fbf9);border-color:#dfe7e9;box-shadow:0 9px 30px #0b5a4e04}.learning-stat strong{color:#087a75}.overview-stat strong{color:#443475}.overview-stat{border-color:#e2e5ee}#storage-note{color:#677084}.learning-stat .eyebrow{color:#507976}progress,progress::-webkit-progress-bar{background:#e7efef}progress::-webkit-progress-value{background:#0a8880}progress::-moz-progress-bar{background:#0a8880}
.search-panel{background:#f0eef7}.search-box{border-color:#dfd9ef;background:#fff;box-shadow:none}.search-box:focus-within{outline-color:#6a55bc}.search-box svg{color:#7b7193}.filter-chip{color:#635a7a}.filter-chip.active{background:#5541b8;color:#fff}.filter-chip:not(.active):hover{background:#e4dff1}.learning-toolbar label{color:#645e79}.learning-toolbar button,.learning-toolbar select{color:#5c527a;border-color:#dfd9eb;background:white;border-radius:9px}.learning-toolbar button:hover{background:#f2eefb;border-color:#bfb1de}.learning-toolbar button[aria-pressed="true"]{background:#e4f5f1;border-color:#9ad4c9;color:#12665e}.results-line{color:#696b82}
.subject-card{border-color:#e2e2ee;box-shadow:0 3px 10px #3d2d7b04;border-radius:18px}.subject-card:before{height:4px;background:#b7a5e8}.subject-card[data-category="core"]:before{background:#83cabc}.subject-card[data-category="electronics"]:before{background:#a3baf0}.subject-card:hover{border-color:#bcaedf;box-shadow:0 12px 30px #44327c0a}.subject-card h3{color:#302a48}.subject-card>p{color:#64657a}.subject-n{color:#766a8c}.subject-symbol{background:#f0eafa;color:#6c46a0}.subject-card[data-category="core"] .subject-symbol{background:#e2f4f0;color:#087a75}.subject-card[data-category="electronics"] .subject-symbol{background:#eaf0fd;color:#4569ae}.bookmark-subject{width:44px;height:44px;border-color:#ded7ed;background:#fff;color:#796399;border-radius:11px}.bookmark-subject:hover{background:#f5effc}.bookmark-subject[aria-pressed="true"]{background:#e3f5ef;border-color:#a3d3c5;color:#137360}.subject-completion{color:#6d6680}.subject-card details{border-color:#e4dfec}.subject-card summary{color:#584387}.subject-card summary span{background:#f0eaf8;color:#65508d}.topic-check{background:#faf9fd;border-color:#e3ddef;color:#535167}.topic-check:hover{border-color:#bfb2da}.topic-check:has(input:checked){background:#e8f6f1;border-color:#96cbbb;color:#285b51}.topic-check input{accent-color:#087a75}.topic-check:focus-within{outline-color:#7660c4}.topic-help{color:#716a81}.subject-details b{color:#483c64}.subject-details p{color:#655d78}.micro-note{border-color:#9ccbc4;background:#edf7f5;color:#516c68}.micro-note a{color:#116f65}.empty-search{background:#f4f0fa}.empty-search strong{color:#483864}
.section-tinted{background:#f4f2fa;border-color:#e7e0f2}.book-table-wrap{border-color:#e3dcec}.book-table th{background:#342959;color:#fff}.book-table tr:nth-child(even){background:#f9f7fc}.book-table td{border-color:#e9e3f2;color:#605a70}.book-table td:first-child{color:#45385f}.advice-strip{background:#e6f4ef;border-color:#d1e9e0}.advice-strip p{color:#416c5c}.advice-icon{color:#26816a}
.resource-card{background:linear-gradient(110deg,#fff,#f6f4fc);border-color:#e3ddef;border-radius:17px}.resource-card h3{color:#3d3157}.resource-card p{color:#686076}.file-symbol.pdf{background:#eee8fa;border-color:#d9cdf0;color:#6a4c9a}.file-symbol.zip{background:#e4f4ee;border-color:#bfe1d5;color:#297c62}.file-category{color:#766988}.resource-footer{gap:12px;flex-wrap:wrap}.resource-footer>span{color:#6e647e}.resource-footer a{background:#5541b8;color:#fff;border-radius:10px;padding:12px 18px;white-space:nowrap}.resource-footer a:hover{background:#433295;text-decoration:none}.resource-footer a.view-pdf{background:#fff;border:1px solid #d4c8e8;color:#604984}.resource-footer a.view-pdf:hover{background:#f3edf9}.section-note-badge{background:#e8f5f0;color:#30745d}
.plan-section{background:linear-gradient(115deg,#302452,#263e5d)}.section-header-dark h2{color:#fff}.section-header-dark h2 span{color:#a2f3e6}.plan-section .eyebrow{color:#d3cbe7}.section-header-dark p{color:#d2d3e6}.week-grid article{border-color:#e4dffb29;background:#ffffff05}.week-grid span{color:#b3e6e2}.week-grid b{color:#fff}.week-grid p{color:#d0cfe0}.week-grid article:last-child{background:#a2e8dd}.week-grid article:last-child span,.week-grid article:last-child b{color:#244948}.week-grid article:last-child p{color:#345d59}.tracker{border-radius:18px}.tracker .eyebrow{color:#71548e}.tracker-copy h3{color:#3c3152}.tracker-bar{background:#e5efed}.tracker-bar span{background:#13877d}.tracker-progress b{color:#15746c}.checklist input{accent-color:#087a75}.checklist label:has(input:checked){background:#e5f4ee;border-color:#a8d3c6;color:#27654e}.checklist label{border-color:#e4dff0;color:#615672}.reset-button{color:#756387}.about-main>p{color:#655d74}.about-main strong{color:#403350}.about-main h2 span{color:#5541b8}.about-aside{background:#eeebf7;box-shadow:12px 12px 0 #eaf5f2;border-radius:20px}.guide-tag{color:#725199}.guide-quote-mark{color:#a28cc3}.about-aside blockquote{color:#49355e}.guide-line{background:#d3c2e6}.guide-monogram{background:#74539a}.guide-id b{color:#473754}.guide-id small{color:#7a6d87}
.join-section{background:linear-gradient(110deg,#332451,#174e5c);color:white}.join-kicker{color:#d4c7e7}.join-copy h2{color:white}.join-copy h2 span{color:#a2f3e6}.join-copy p{color:#d9d4e5}.qr-card{border-radius:18px}.footer{background:#1d1833;color:#c5bdd5}.footer-brand b{color:#fff}.footer-brand em{color:#90e2d2}.footer-brand small{color:#bdb4ce}.footer-main p{color:#bfb6cd}.footer-main h3{color:#f4effc}.footer-base{color:#bdb4ce;border-color:#c6add51a}.public-visitor-counter{border-color:#544369}.visitor-counter-label{color:#e8dfef}
@media(max-width:1100px){.hero-layout{gap:32px}.hero h1{font-size:54px}.focus-desk{padding:23px}.resource-footer{gap:10px}.resource-footer a{padding:11px 15px}}
@media(min-width:851px) and (max-width:1020px){.site-nav{gap:12px}.site-nav a{font-size:13px}.site-nav .header-cta{padding:11px 14px}.brand b{font-size:20px}}
@media(max-width:850px){.hero-layout{grid-template-columns:1fr;gap:28px;padding-block:36px 55px}.hero-content{max-width:680px}.hero h1{font-size:48px;margin:17px 0}.hero h1 br{display:block}.hero-lead{font-size:16px}.hero-visual{max-width:none}.hero-actions{margin-top:20px}.focus-desk h2{font-size:25px}.section{padding-block:62px}.resource-footer{align-items:center}.site-nav a{font-size:14px}}
@media(max-width:600px){.hero-layout{padding-block:28px 48px;gap:24px}.hero h1{font-size:40px;line-height:1.09;margin:16px 0}.hero-lead{font-size:16px;line-height:1.7;margin-bottom:0}.hero-actions{gap:10px;margin-top:20px}.hero-actions .button{min-height:46px;padding:11px 15px;font-size:14px}.hero-actions .button-hot{flex-basis:100%}.hero-actions .button-outline{flex-grow:0}.focus-desk{padding:21px;border-radius:17px}.focus-desk h2{font-size:24px;margin-block:18px}.timer-display{font-size:65px;margin-block:12px}.timer-modes button{font-size:14px}.focus-desk .desk-footer{margin-top:8px}.section{padding-block:50px}.section h2{font-size:32px}.resource-footer{flex-wrap:wrap;justify-content:flex-start;gap:10px}.resource-footer>span{flex-basis:100%}.resource-footer a{padding:11px 16px}.book-table-wrap{border-radius:13px}.about-aside{box-shadow:7px 7px 0 #e8f4f0}.learning-toolbar button{border-radius:9px}.learning-toolbar #expand-subjects{margin-top:0}.subject-card.learning-card{border-radius:15px}.quick-cards{padding:17px 14px}.quick-card b{font-size:14px}.quick-card small{font-size:12px}}

/* Permanent subject-guide navigation and editorial FAQ */
.seo-subject-guides{background:#fff}
.seo-guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:28px}
.seo-guide-link{display:flex;flex-direction:column;gap:7px;padding:22px 23px;background:#fafbff;border:1px solid #dfdfec;border-radius:15px;text-decoration:none;transition:transform .16s,border-color .16s,box-shadow .16s}
.seo-guide-link:hover{border-color:#8dc9bd;box-shadow:0 9px 24px #20265711;transform:translateY(-2px)}
.seo-guide-link small{font-size:11px;letter-spacing:.12em;color:#0a7b75;font-weight:800}
.seo-guide-link strong{font-size:18px;color:#2e295a;line-height:1.35}
.seo-guide-link span{font-size:14px;color:#656a7c;line-height:1.65}
.seo-faq{background:#f5f3fa}
.seo-faq>.shell>p{color:#656a7c;margin-bottom:23px}
.seo-faq-item{border:1px solid #e0dbea;border-radius:12px;margin-bottom:11px;background:white;padding:5px 23px}
.seo-faq-item summary{font-size:17px;font-weight:700;color:#322b56;padding:17px 0;cursor:pointer}
.seo-faq-item p{margin:0 0 19px;color:#596174;line-height:1.75}
@media(max-width:750px){.seo-guide-grid{grid-template-columns:1fr}.seo-guide-link{padding:19px}.seo-faq-item{padding:3px 16px}}

.subject-guide-cta{display:inline-block;margin:12px 0 2px;color:#087a75;font-size:14px;font-weight:750;text-decoration:underline;text-underline-offset:4px}