:root{--b:#543925;--b2:#73523a;--b3:#987455;--paper:#fffdf9;--ink:#28231e;--muted:#786e64;--line:#e8ded3;--soft:#f3ece3;--green:#2c7354;--gb:#e9f5ed;--amber:#8c5a13;--ab:#fff3dc;--red:#a23c34;--rb:#fff0ed;--blue:#365e82;--bb:#edf4fa;--shadow:0 8px 26px #412b1a0b;--r:17px}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#f7f5f1;line-height:1.5}button,input,textarea,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #c29b75;outline-offset:2px}a{color:inherit;text-decoration:none}.muted{color:var(--muted)}.small{font-size:.82rem}.tiny{font-size:.73rem}.eyebrow{font-size:.7rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase;color:var(--b3)}.pill{display:inline-flex;align-items:center;gap:5px;padding:5px 9px;border-radius:99px;font-size:.72rem;font-weight:800;background:var(--soft);color:var(--b)}.pill.green{background:var(--gb);color:var(--green)}.pill.amber{background:var(--ab);color:var(--amber)}.pill.red{background:var(--rb);color:var(--red)}.btn{border:1px solid transparent;background:var(--b);color:#fff;border-radius:10px;padding:10px 14px;font-weight:750;font-size:.86rem;display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap}.btn:hover{background:#412a1b}.btn.secondary{background:#fff;color:var(--b);border-color:var(--line)}.btn.secondary:hover{background:var(--soft)}.btn.ghost{background:transparent;color:var(--b)}.btn.danger{background:#fff;color:var(--red);border-color:#efc9c4}.btn.sm{padding:7px 10px;font-size:.76rem}.btn:disabled{opacity:.45;cursor:not-allowed}.brand-mark{width:39px;height:39px;border-radius:12px;background:var(--b);color:white;display:grid;place-items:center;font-weight:900}.topbar{height:72px;background:#fffdf9f2;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:0 23px;position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;min-width:225px}.brand-text{display:flex;flex-direction:column;line-height:1.12;gap:4px}.brand-text strong{font-size:.9rem;letter-spacing:-.02em}.brand-text span{font-size:.62rem;letter-spacing:.11em;color:var(--muted);font-weight:800}.search-top{flex:1;max-width:500px;margin-left:auto;position:relative}.search-top input{width:100%;border:1px solid var(--line);background:#f9f6f1;border-radius:11px;padding:10px 12px 10px 34px}.search-top span{position:absolute;left:12px;top:8px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:8px}.preview-chip{font-size:.68rem;font-weight:850;color:#7b4e16;background:#fff2d5;border:1px solid #f0deb8;border-radius:99px;padding:7px 9px;white-space:nowrap}.mobile-menu{display:none;border:1px solid var(--line);background:white;border-radius:10px;width:38px;height:38px;color:var(--b)}.layout{display:grid;grid-template-columns:245px minmax(0,1fr);min-height:calc(100vh - 72px)}.sidebar{border-right:1px solid var(--line);background:var(--paper);padding:22px 13px;display:flex;flex-direction:column;gap:21px}.nav-label{padding:0 12px;color:#a09488;font-size:.64rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase;margin-bottom:7px}.nav-list{display:grid;gap:4px}.nav-link{display:flex;align-items:center;gap:11px;width:100%;padding:10px 12px;border-radius:10px;border:0;background:transparent;color:#65584e;text-align:left;font-size:.85rem;font-weight:650}.nav-link:hover,.admin-tab:hover{background:#f5eee6;color:var(--b)}.nav-link.active,.admin-tab.active{background:#eee2d5;color:#492f1f;font-weight:850}.nav-count{margin-left:auto;font-size:.66rem;background:#f0e6db;border-radius:7px;padding:2px 6px}.sidebar-bottom{margin-top:auto;border:1px solid var(--line);background:#faf5ee;border-radius:14px;padding:13px}.sidebar-bottom strong{font-size:.82rem;display:block;margin:6px 0}.sidebar-bottom p{font-size:.73rem;color:var(--muted);margin:0 0 11px}.main{min-width:0;padding:26px clamp(15px,3vw,40px) 25px;max-width:1680px;width:100%;margin:auto}.page-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:17px;margin-bottom:23px}.page-heading h1{margin:5px 0 7px;font-size:clamp(1.75rem,3vw,2.4rem);letter-spacing:-.055em;line-height:1.12}.page-heading p{margin:0;color:var(--muted);max-width:780px}.heading-actions{display:flex;gap:8px;flex-wrap:wrap}.grid{display:grid;gap:15px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.three{grid-template-columns:repeat(3,minmax(0,1fr))}.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:19px;box-shadow:var(--shadow);min-width:0}.card h3{margin:0;font-size:1.02rem;letter-spacing:-.025em}.card p{color:var(--muted);font-size:.86rem}.section-title{font-size:1.12rem;letter-spacing:-.025em;margin:0}.section-subtitle{font-size:.82rem;color:var(--muted);margin:4px 0 0}.section-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px}.stat-card{display:flex;gap:13px;align-items:flex-start;padding:16px}.stat-icon{width:41px;height:41px;display:grid;place-items:center;border-radius:12px;background:var(--soft);font-size:1.15rem;flex-shrink:0}.stat-label{font-size:.75rem;color:var(--muted);font-weight:650}.stat-number{font-size:1.6rem;letter-spacing:-.05em;font-weight:900;line-height:1.15;margin-top:4px}.stat-note{font-size:.7rem;color:var(--green);margin-top:5px}.hero{position:relative;overflow:hidden;background:linear-gradient(115deg,#4c3221,#684a32 63%,#876547);border-radius:22px;color:white;padding:clamp(24px,4vw,46px);margin-bottom:21px;min-height:275px;display:flex;align-items:center}.hero:after{content:"";position:absolute;width:330px;height:330px;border-radius:50%;border:1px solid #ffffff25;right:-70px;top:-110px;box-shadow:0 0 0 32px #ffffff08,0 0 0 70px #ffffff06}.hero-inner{position:relative;z-index:1;max-width:740px}.hero .eyebrow{color:#e2c7a8}.hero h1{font-size:clamp(2rem,4.5vw,3.35rem);line-height:1.04;letter-spacing:-.065em;margin:13px 0}.hero p{font-size:1rem;color:#f0e4d9;max-width:610px;margin:0 0 23px}.hero-actions{display:flex;flex-wrap:wrap;gap:9px}.hero .btn{background:white;color:#4c3221}.hero .btn.secondary{background:#ffffff12;color:white;border-color:#ffffff57}.hero-note{margin-top:18px;font-size:.74rem;color:#dfcbb8}.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0 27px}.feature{display:flex;gap:12px;align-items:flex-start;padding:15px;border:1px solid var(--line);background:#fffdf9;border-radius:14px}.feature-icon{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--soft);font-size:1.1rem;flex-shrink:0}.feature strong{display:block;font-size:.86rem}.feature p{margin:4px 0;font-size:.77rem}.subject-card{display:flex;flex-direction:column;gap:12px;min-height:200px;transition:.16s}.subject-card:hover{transform:translateY(-2px);border-color:#cbb49e}.subject-top{display:flex;align-items:center;justify-content:space-between;gap:9px}.subject-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:var(--soft);font-size:1.3rem}.subject-card p{margin:7px 0 0;line-height:1.48}.subject-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:.73rem;color:var(--muted)}.text-link{border:0;background:none;color:var(--b);font-weight:850;padding:0}.text-link:hover{text-decoration:underline}.ad-slot{border:1px dashed #ceb99f;background:#fbf6ed;border-radius:14px;display:flex;align-items:center;gap:14px;padding:15px}.ad-thumb{width:80px;height:62px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(135deg,#ddc7ac,#f6eade);font-size:1.6rem;flex-shrink:0;overflow:hidden}.ad-thumb img{width:100%;height:100%;object-fit:cover}.ad-details{min-width:0;flex:1}.ad-label{font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;font-weight:900;color:#8b6a48}.ad-slot h4{margin:4px 0;font-size:.91rem}.ad-slot p{margin:0;font-size:.77rem}.ad-actions{font-size:.73rem;font-weight:850;color:var(--b);white-space:nowrap}.library-item{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.library-item:last-child{border-bottom:0}.file-icon{width:40px;height:40px;display:grid;place-items:center;background:var(--soft);border-radius:11px;font-size:1.1rem;flex-shrink:0}.library-item h4{margin:0;font-size:.88rem}.library-item p{margin:4px 0;font-size:.77rem}.library-item .meta{font-size:.7rem;color:var(--muted)}.search-row{display:flex;gap:8px;align-items:center;margin-bottom:17px;flex-wrap:wrap}.field-search{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 12px;min-width:0;flex:1}.filter-select{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 12px}.split{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(290px,.88fr);gap:17px;align-items:start}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.field{display:flex;flex-direction:column;gap:6px;min-width:0}.field.full{grid-column:1/-1}.field label{font-weight:750;font-size:.8rem;color:#57473a}.field input,.field select,.field textarea{width:100%;border:1px solid #dcd0c3;background:#fff;border-radius:10px;padding:10px 11px;color:var(--ink);min-width:0}.field textarea{resize:vertical;min-height:103px;line-height:1.55}.field .hint{color:var(--muted);font-size:.72rem}.input-prefix{display:flex;align-items:stretch;border:1px solid #dcd0c3;border-radius:10px;overflow:hidden;background:white}.input-prefix span{padding:10px 12px;background:#f5eee6;color:var(--b);font-weight:850;border-right:1px solid #dcd0c3}.input-prefix input{border:0;border-radius:0}.checkbox-row{display:flex;gap:9px;align-items:flex-start;font-size:.79rem;color:#61564d}.checkbox-row input{margin-top:4px;accent-color:var(--b)}.form-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:15px}.notice{padding:12px 14px;border-radius:11px;background:var(--bb);color:#315b7e;font-size:.8rem;border:1px solid #d9e8f3}.notice.warn{background:var(--ab);color:#865710;border-color:#f0deb9}.notice.success{background:var(--gb);color:#286749;border-color:#cde8d5}.solver-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:17px;align-items:start}.solver-input{min-height:150px!important}.example-chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}.chip-button{border:1px solid var(--line);background:#fff;border-radius:99px;padding:7px 10px;font-size:.74rem;color:#66574b}.chip-button:hover{background:var(--soft)}.solver-result{margin-top:16px}.answer-panel{background:#f3ece3;border:1px solid #e6d4c1;border-radius:14px;padding:18px}.answer-label{font-size:.69rem;font-weight:850;text-transform:uppercase;letter-spacing:.12em;color:#8b6545}.answer-value{font-size:clamp(1.45rem,3vw,2.1rem);font-weight:900;color:#4c3221;letter-spacing:-.04em;margin:7px 0}.steps{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px;counter-reset:steps}.steps li{counter-increment:steps;display:flex;gap:10px;font-size:.85rem}.steps li:before{content:counter(steps);width:24px;height:24px;display:grid;place-items:center;border-radius:7px;background:#eee0d0;color:#68492f;flex-shrink:0;font-size:.74rem;font-weight:900}.teaching-section{margin-top:14px;padding-top:13px;border-top:1px solid #dfcbb7}.teaching-section h4{margin:0 0 6px;font-size:.88rem}.teaching-section p{margin:0;color:#5f5146;font-size:.84rem}.related-lesson{border:1px solid var(--line);border-radius:10px;padding:11px;margin-top:9px;background:white}.related-lesson strong{font-size:.82rem}.related-lesson p{font-size:.76rem;margin:4px 0;color:var(--muted)}.workflow-list{display:grid;gap:12px}.workflow-item{display:flex;gap:11px}.workflow-num{width:29px;height:29px;border-radius:9px;background:var(--soft);display:grid;place-items:center;font-size:.77rem;font-weight:900;color:var(--b);flex-shrink:0}.workflow-item strong{font-size:.83rem;display:block}.workflow-item p{font-size:.76rem;margin:3px 0 0}.profile-hero{display:grid;grid-template-columns:230px minmax(0,1fr);gap:26px;align-items:center;background:linear-gradient(120deg,#f8f0e5,#fffdf9);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,38px);margin-bottom:19px}.founder-photo{aspect-ratio:4/5;border-radius:17px;background:linear-gradient(150deg,#e5d4c1,#f8f2e9);display:grid;place-items:center;overflow:hidden;border:1px solid #d9c6b3;position:relative}.founder-photo img{width:100%;height:100%;object-fit:cover}.founder-placeholder{display:flex;flex-direction:column;align-items:center;gap:9px;color:#84664a;text-align:center;padding:13px}.initials{width:80px;height:80px;display:grid;place-items:center;background:#d8c0a7;color:#4f3522;border-radius:50%;font-size:1.8rem;font-weight:900}.profile-hero h1{font-size:clamp(2rem,4vw,3rem);letter-spacing:-.055em;line-height:1.05;margin:8px 0 12px}.profile-hero p{color:#66574b}.profile-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.profile-points .card{padding:18px}.profile-points h3{margin:8px 0 6px}.profile-points p{font-size:.82rem;margin:0}.disclaimer{padding:15px 17px;background:#f6f1ea;border-left:4px solid var(--b3);border-radius:0 11px 11px 0;font-size:.83rem;color:#5f5146}.admin-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:19px;align-items:start}.admin-sidebar{background:var(--paper);border:1px solid var(--line);border-radius:15px;padding:11px;position:sticky;top:91px}.admin-caption{font-size:.64rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:#9a8b7d;padding:9px}.admin-tab{display:flex;align-items:center;gap:9px;width:100%;background:transparent;border:0;text-align:left;padding:10px;border-radius:9px;font-size:.8rem;color:#67584b;font-weight:700}.admin-content{min-width:0}.admin-banner{display:flex;align-items:flex-start;gap:12px;padding:16px 18px;background:#f1e8dd;border:1px solid #e1d0bc;border-radius:14px;margin-bottom:16px}.banner-symbol{width:39px;height:39px;display:grid;place-items:center;background:#e3d0bb;border-radius:11px;flex-shrink:0;font-size:1.1rem}.admin-banner h3{margin:0;font-size:.96rem}.admin-banner p{margin:4px 0 0;color:#75604d;font-size:.79rem}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px;background:white}table{width:100%;border-collapse:collapse;min-width:620px}th,td{text-align:left;padding:12px;border-bottom:1px solid #eee6de;font-size:.78rem;vertical-align:middle}th{background:#faf5ef;color:#7b6a5b;font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;white-space:nowrap}tr:last-child td{border-bottom:0}.person-cell{display:flex;align-items:center;gap:8px;min-width:140px}.avatar{width:33px;height:33px;display:grid;place-items:center;border-radius:10px;background:#e9d8c7;color:var(--b);font-weight:900;font-size:.7rem;flex-shrink:0}.person-cell strong{display:block;font-size:.79rem}.person-cell span{display:block;font-size:.7rem;color:var(--muted)}.actions-cell{display:flex;gap:5px;flex-wrap:wrap}.preview-frame{border:1px solid #d9c8b5;border-radius:14px;overflow:hidden;background:#fff}.preview-frame-header{display:flex;gap:6px;align-items:center;padding:9px 12px;background:#f4ece2;border-bottom:1px solid #e4d6c5}.preview-dot{width:8px;height:8px;border-radius:50%;background:#ccb59d}.preview-frame-title{margin-left:5px;font-size:.69rem;color:#7b6855}.preview-frame-body{padding:18px;min-height:195px}.ad-preview{background:linear-gradient(135deg,#f7eee3,#fffdf9);border:1px solid #e5d3bf;border-radius:11px;overflow:hidden}.ad-preview img{width:100%;height:125px;object-fit:cover}.ad-preview-body{padding:14px}.admin-dashboard-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.metric-box{border:1px solid var(--line);border-radius:12px;padding:14px;background:white}.metric-label{font-size:.71rem;color:var(--muted)}.metric-value{font-size:1.45rem;font-weight:900;letter-spacing:-.04em;margin-top:4px}.metric-note{font-size:.69rem;color:var(--green);margin-top:3px}.empty-state{text-align:center;padding:30px 18px;color:var(--muted)}.empty-state strong{color:var(--ink);display:block}.empty-state p{max-width:420px;margin:5px auto 12px;font-size:.82rem}.footer{border-top:1px solid var(--line);padding:20px 0 5px;margin-top:32px;display:flex;align-items:flex-start;justify-content:space-between;gap:22px;flex-wrap:wrap}.footer-brand{max-width:470px}.footer-brand strong{font-size:.86rem}.footer-brand p{font-size:.73rem;color:var(--muted);margin:6px 0}.footer-links{display:flex;gap:12px;flex-wrap:wrap;font-size:.75rem;color:#69594b}.footer-links a:hover{text-decoration:underline}.toast{position:fixed;bottom:20px;right:20px;z-index:100;background:#2e281f;color:white;padding:12px 16px;border-radius:11px;box-shadow:0 12px 35px #0002;max-width:min(420px,calc(100vw - 30px));font-size:.83rem}.modal-backdrop{position:fixed;inset:0;background:#241b14a8;z-index:90;display:flex;align-items:center;justify-content:center;padding:17px}.modal{width:min(660px,100%);max-height:90vh;overflow:auto;background:var(--paper);border-radius:18px;border:1px solid #e5d8ca;box-shadow:0 25px 90px #0003}.modal-head{padding:18px 21px;border-bottom:1px solid var(--line);display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.modal-head h2{margin:0;font-size:1.18rem;letter-spacing:-.03em}.modal-head p{margin:4px 0 0;font-size:.78rem;color:var(--muted)}.modal-body{padding:20px}.modal-close{border:1px solid var(--line);background:white;border-radius:9px;width:33px;height:33px;color:var(--b);font-size:1.1rem;flex-shrink:0}.modal-actions{display:flex;justify-content:flex-end;gap:8px;padding:0 20px 20px;flex-wrap:wrap}.legal-copy h2{font-size:1.08rem;margin:21px 0 6px}.legal-copy p,.legal-copy li{font-size:.84rem;color:#5f554b}.about-two{display:grid;grid-template-columns:1fr 1fr;gap:15px}.subtle-line{border:0;border-top:1px solid var(--line);margin:17px 0}.mini-card{border:1px solid var(--line);border-radius:12px;padding:14px;background:white}.mini-card p{font-size:.78rem;margin:5px 0;color:var(--muted)}.check-status{display:flex;align-items:center;gap:7px;color:var(--green);font-weight:750;font-size:.76rem}.status-dot{width:8px;height:8px;background:#409366;border-radius:50%}.drop-zone{border:1.5px dashed #cbb49e;background:#fbf6ef;padding:17px;border-radius:12px;text-align:center}.drop-zone strong{display:block;font-size:.84rem}.drop-zone p{font-size:.74rem;margin:5px 0 11px}.photo-thumb{width:75px;height:90px;border-radius:10px;background:#eee0d0;overflow:hidden;display:grid;place-items:center;color:#7a5a3c;font-size:1.45rem}.photo-thumb img{width:100%;height:100%;object-fit:cover}.mobile-nav{display:none}
@media(max-width:1120px){.four{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-layout{grid-template-columns:195px minmax(0,1fr)}.admin-dashboard-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.solver-layout{grid-template-columns:minmax(0,1fr) 255px}.brand{min-width:210px}.preview-chip{display:none}}
@media(max-width:820px){.topbar{height:65px;padding:0 12px;gap:10px}.mobile-menu{display:grid;place-items:center;flex-shrink:0}.brand{min-width:0;flex:1}.brand-mark{width:35px;height:35px}.brand-text strong{font-size:.8rem}.brand-text span,.search-top{display:none}.top-actions{gap:5px}.top-actions .btn{padding:8px 9px;font-size:.75rem}.layout{grid-template-columns:1fr;min-height:calc(100vh - 65px)}.sidebar{position:fixed;z-index:30;top:65px;bottom:0;left:0;width:270px;transform:translateX(-105%);transition:transform .2s;box-shadow:15px 0 30px #0000000c}.sidebar.open{transform:translateX(0)}.main{padding:20px 13px 26px}.page-heading{flex-direction:column}.heading-actions{width:100%}.three{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-strip{grid-template-columns:1fr}.profile-hero{grid-template-columns:150px 1fr;gap:17px;padding:19px}.profile-points{grid-template-columns:1fr}.admin-layout{grid-template-columns:1fr}.admin-sidebar{position:static;display:flex;gap:4px;overflow-x:auto;padding:8px}.admin-caption{display:none}.admin-tab{white-space:nowrap;width:auto;flex-shrink:0}.solver-layout,.split{grid-template-columns:1fr}.footer{margin-bottom:58px}.mobile-nav{position:fixed;display:flex;bottom:0;left:0;right:0;z-index:25;background:#fffdf9;border-top:1px solid var(--line);padding:6px 6px calc(6px + env(safe-area-inset-bottom));justify-content:space-around;gap:2px}.mobile-nav button{border:0;background:transparent;color:#76675a;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:.61rem;font-weight:750;min-width:53px;padding:4px 3px}.mobile-nav button.active{color:var(--b)}.mi{font-size:1.06rem}.about-two{grid-template-columns:1fr}}
@media(max-width:520px){.brand-text strong{max-width:145px;white-space:normal;line-height:1.04}.hero{border-radius:17px;padding:23px 18px;min-height:300px}.hero h1{font-size:2.18rem}.two,.three,.four{grid-template-columns:1fr}.card{padding:15px}.stat-card{padding:13px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.profile-hero{grid-template-columns:1fr;padding:17px}.founder-photo{max-width:220px;aspect-ratio:4/4;margin:0 auto;width:100%}.profile-hero h1{font-size:2.12rem}.admin-dashboard-grid{grid-template-columns:1fr 1fr}.ad-slot{align-items:flex-start;gap:9px}.ad-thumb{width:58px;height:55px}.ad-actions{display:none}.answer-value{font-size:1.6rem}.footer{padding-bottom:12px}.modal-body{padding:16px}.modal-head{padding:16px}.modal-actions{padding:0 16px 16px}.page-heading h1{font-size:1.82rem}}

/* Approved design refinements: retain the original cocoa, cream and paper palette. */
.mobile-menu{display:grid;place-items:center;flex-shrink:0;font-size:1.1rem;transition:background .18s,transform .18s}
.mobile-menu:hover{background:var(--soft);transform:translateY(-1px)}
.layout{display:block;min-height:calc(100vh - 72px)}
.main{width:100%;max-width:1680px;margin:0 auto;padding:26px clamp(15px,3vw,40px) 25px}
.sidebar{position:fixed;z-index:46;top:72px;bottom:0;left:0;width:min(310px,88vw);height:auto;overflow-y:auto;transform:translateX(-105%);transition:transform .24s cubic-bezier(.2,.75,.25,1);box-shadow:18px 0 44px #412b1a18;border-right:1px solid var(--line)}
.sidebar.open{transform:translateX(0)}
.nav-backdrop{position:fixed;z-index:45;inset:72px 0 0;background:#241b1466;opacity:0;visibility:hidden;transition:opacity .22s,visibility .22s}
.nav-backdrop.open{opacity:1;visibility:visible}
body.menu-open{overflow:hidden}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;padding:0 4px}
.drawer-top strong{display:block;padding:0 12px;font-size:.9rem;color:var(--b)}
.drawer-close{width:32px;height:32px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--b);font-size:1.25rem;line-height:1}
.top-actions .install-app-btn{padding:9px 12px}
.install-label{display:inline}
.footer{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:start;gap:18px;border-top:1px solid var(--line);padding:26px 0 0;margin-top:38px}
.footer-contact-column{min-width:0}
.footer-credit-banner{grid-column:1/-1;display:flex;align-items:flex-start;gap:10px;padding:0 0 17px;border-bottom:1px solid var(--line);margin-bottom:1px;color:var(--b)}.footer-credit-star{display:inline-grid;place-items:center;flex:0 0 27px;height:27px;border-radius:8px;background:var(--soft);color:var(--b3);font-size:1rem;margin-top:1px}.footer-credit-banner p{margin:2px 0 0;font-size:.82rem;font-weight:750;line-height:1.55;overflow-wrap:anywhere}
.footer-column-heading{display:block;font-size:.82rem;color:var(--b);margin-bottom:12px}
.footer-links{display:contents}
.footer-column{display:flex;flex-direction:column;align-items:flex-start;gap:9px;font-size:.78rem;color:#69594b}
.footer-column strong{font-size:.82rem;color:var(--b);margin-bottom:3px}
.footer-column a:hover,.footer-contact a:hover{text-decoration:underline;text-decoration-color:var(--b3);text-underline-offset:3px}
.footer-contact{display:grid;gap:12px;margin-top:0}
.footer-contact a,.contact-row{display:flex;align-items:center;gap:10px;min-width:0;font-size:.8rem;overflow-wrap:anywhere}
.footer-contact a span:last-child{min-width:0;overflow-wrap:anywhere}
.contact-symbol{display:inline-grid;place-items:center;width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:var(--soft);color:var(--b);font-size:1rem}
.phone-symbol{font-size:1.1rem}
.whatsapp-icon{width:29px;height:29px;flex:0 0 29px;display:block}
.footer-bottom{grid-column:1/-1;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);padding:14px 0 4px;color:var(--muted);font-size:.72rem}.footer-bottom span{max-width:100%;overflow-wrap:anywhere}
.founder-contact-list{display:grid;gap:13px;margin-top:18px}
.contact-row{padding:12px;border:1px solid var(--line);border-radius:12px;background:#fffdf9;transition:transform .18s,border-color .18s}
.contact-row:hover{transform:translateY(-2px);border-color:#cbb49e}
.contact-row>span:nth-last-child(1){display:flex;flex-direction:column;gap:3px}
.contact-row small{font-size:.78rem;color:var(--muted)}
.qa-intro{display:grid;grid-template-columns:58px minmax(0,1fr);gap:18px;align-items:start;margin-bottom:17px}
.qa-symbol{display:grid;place-items:center;width:56px;height:56px;background:var(--soft);color:var(--b);font-size:1.9rem;font-weight:900;border-radius:16px}
.qa-intro p{margin:7px 0 13px}
.qa-list{display:grid;gap:10px}
.qa-item{border:1px solid var(--line);background:var(--paper);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:border-color .18s,transform .18s}
.qa-item[open]{border-color:#cbb49e}
.qa-item summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:35px minmax(0,1fr) 24px;gap:12px;align-items:center;padding:16px 18px;font-weight:760;font-size:.9rem}
.qa-item summary::-webkit-details-marker{display:none}
.qa-number{font-size:.68rem;color:var(--b3);letter-spacing:.08em}
.qa-chevron{color:var(--b3);font-size:1.1rem;transition:transform .2s}
.qa-item[open] .qa-chevron{transform:rotate(180deg)}
.qa-answer{padding:0 18px 18px 65px;color:var(--muted);font-size:.87rem;animation:qaReveal .22s ease both}
.qa-answer p{margin:0;line-height:1.75}
.install-modal-hero{display:flex;align-items:center;gap:12px;padding:12px;background:var(--soft);border:1px solid var(--line);border-radius:13px;margin-bottom:15px}
.install-modal-hero .brand-mark{flex:0 0 39px}
.install-modal-hero h3{margin:0}
.install-modal-hero p{margin:3px 0 0}
.modal-body ol{padding-left:23px;line-height:1.8}
@keyframes pageEnter{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@keyframes softRise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes heroOrbit{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes qaReveal{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.main{animation:pageEnter .32s ease both}
.hero:after{animation:heroOrbit 48s linear infinite;transform-origin:center}
.feature,.subject-card,.card{transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.subject-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px #412b1a0c}
.feature:hover{transform:translateY(-2px);border-color:#d7c4b0}
.btn,.nav-link,.admin-tab{transition:background .18s,color .18s,border-color .18s,transform .18s}
button:active{transform:translateY(1px)}
@media(max-width:760px){.footer{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.footer-contact-column{grid-column:auto}.footer-bottom{grid-column:1/-1}}
@media(max-width:820px){.topbar{height:65px;padding:0 12px;gap:8px}.mobile-menu{display:grid}.brand{min-width:0;flex:1}.brand-mark{width:35px;height:35px}.brand-text strong{font-size:.78rem}.brand-text span,.search-top{display:none}.top-actions{gap:5px}.top-actions .btn{padding:8px 9px;font-size:.72rem}.install-label{display:none}.control-top-btn{display:none}.layout{display:block;min-height:calc(100vh - 65px)}.sidebar{top:65px;width:min(300px,88vw);transform:translateX(-105%)}.sidebar.open{transform:translateX(0)}.nav-backdrop{inset:65px 0 0}.main{padding:20px 13px 26px}.footer{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding-top:22px}.footer-contact-column{grid-column:auto}.footer-column{font-size:.76rem}.footer-bottom{font-size:.68rem}.qa-intro{grid-template-columns:42px minmax(0,1fr);gap:12px;padding:15px}.qa-symbol{width:42px;height:42px;border-radius:12px;font-size:1.5rem}.qa-item summary{grid-template-columns:25px minmax(0,1fr) 18px;padding:14px 13px;gap:9px;font-size:.84rem}.qa-answer{padding:0 13px 15px 47px}.contact-row{padding:10px}.top-actions .sign-in-btn{display:none}}
@media(max-width:430px){.footer{grid-template-columns:1fr 1fr}.footer-column:nth-of-type(5){grid-column:1/-1}.footer-bottom{display:grid;grid-column:1/-1}.top-actions .install-app-btn{padding:8px 10px}.qa-intro .button-row{display:grid;grid-template-columns:1fr}.qa-intro .button-row .btn{width:100%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}

/* Targeted revision: horizontal footer columns and beginner-friendly theory explanations. */
.footer-contact-column,.footer-column{min-width:0}
.footer-contact a{line-height:1.35}
.footer-bottom{overflow-wrap:anywhere}
@media(max-width:430px){.footer{grid-template-columns:1fr 1fr;column-gap:16px;row-gap:20px}.footer-contact-column,.footer-column{min-width:0}.footer-contact a{align-items:center;gap:6px;font-size:.7rem}.contact-symbol{width:25px;height:25px;flex-basis:25px}.whatsapp-icon{width:25px;height:25px;flex-basis:25px}.footer-bottom{grid-column:1/-1}}