:root{font-family:Nunito,Trebuchet MS,Arial,sans-serif;color:#24364b;background:#f5f8fc;font-synthesis:none;text-rendering:optimizeLegibility;font-optical-sizing:auto;font-weight:500;--blue: #2563a6;--blue-dark: #174779;--blue-pale: #eaf3ff;--yellow: #f4c84a;--orange: #ed8850;--green: #3e9b73;--red: #cf5c56;--ink: #24364b;--subtle: #61758c;--muted: #61758c;--surface: #fff;--surface-solid: #fff;--border: #d9e4ef;--line: #e4ebf3;--bg: #f5f8fc;--shadow: 0 8px 24px rgba(39, 70, 105, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh}button,input,select{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid #f0b829;outline-offset:3px}a{color:inherit;text-decoration:none}.app{min-height:100vh;overflow:hidden;background:var(--bg);color:var(--ink);transition:background .2s,color .2s}.app.dark{--blue: #78b6ff;--blue-dark: #a9d0ff;--blue-pale: #24384f;--yellow: #f4c84a;--ink: #edf5ff;--subtle: #bac8d9;--muted: #bac8d9;--surface: #1e2d3e;--surface-solid: #1e2d3e;--border: #3a4d62;--line: #34475c;--bg: #142233;--shadow: 0 8px 24px rgba(0, 0, 0, .18)}.ambient{display:none}.site-header{max-width:1240px;min-height:76px;margin:auto;padding:0 30px;display:flex;align-items:center;justify-content:space-between;border-bottom:2px solid var(--line);position:relative;z-index:5}.brand{flex:0 0 auto;display:flex;gap:10px;align-items:center;text-align:left;color:var(--ink);border:0;background:none;cursor:pointer}.brand-mark{display:grid;place-items:center;width:42px;height:42px;color:#fff;border-radius:13px;background:var(--blue);box-shadow:0 4px 0 var(--blue-dark)}.brand b{display:block;color:var(--blue-dark);font-size:21px;font-weight:900;line-height:1.1}.brand small{display:block;margin-top:4px;color:var(--subtle);font-size:9px;letter-spacing:.8px;font-weight:800}.nav-links{display:flex;align-items:center;gap:7px}.nav-links button{padding:10px 13px;color:var(--subtle);background:transparent;border:0;border-radius:10px;font-size:13px;font-weight:800;cursor:pointer;transition:background .18s,color .18s}.nav-links button:hover,.nav-links .nav-active{color:var(--blue-dark);background:var(--blue-pale)}.header-actions{display:flex;align-items:center;gap:8px}.icon-button,.mobile-menu{display:grid;place-items:center;width:40px;height:40px;color:var(--blue);background:var(--surface);border:2px solid var(--border);border-radius:12px;cursor:pointer;transition:transform .18s,background .18s}.icon-button:hover,.mobile-menu:hover{transform:translateY(-2px);background:var(--blue-pale)}.user-chip{display:flex;align-items:center;gap:8px;padding:5px 10px 5px 5px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:24px;font-size:12px;font-weight:800;cursor:pointer}.avatar,.table-avatar{display:inline-grid;flex:0 0 auto;place-items:center;width:30px;height:30px;color:#fff;background:var(--orange);border-radius:50%;font-weight:900}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:9px;padding:0 20px;color:#fff;background:var(--blue);border:0;border-radius:12px;box-shadow:0 4px 0 var(--blue-dark);font-size:13px;font-weight:900;cursor:pointer;transition:transform .16s,box-shadow .16s,background .16s}.button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 0 var(--blue-dark)}.button:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 var(--blue-dark)}.button:disabled{opacity:.48;cursor:not-allowed}.button-gold{color:#45330a;background:var(--yellow);box-shadow:0 4px #d4a62c}.button-gold:hover:not(:disabled){box-shadow:0 6px #d4a62c}.button-outline{color:var(--blue-dark);background:var(--surface);border:2px solid var(--blue);box-shadow:none}.button-outline:hover:not(:disabled){background:var(--blue-pale);box-shadow:none}.header-login{min-height:38px;padding:0 16px}.mobile-menu{display:none}.page-shell{max-width:1160px;margin:auto;padding:45px 28px 76px;animation:rise .3s ease both}.home-shell{padding-top:28px}.hero{position:relative;min-height:420px;overflow:hidden;padding:58px 58px 83px;background:#e7f2ff;border:2px solid #c9def5;border-radius:25px;box-shadow:var(--shadow)}.dark .hero{background:#203b57;border-color:#3a5c7e}.hero:before{position:absolute;content:"";width:310px;height:310px;right:7%;top:45px;border-radius:50%;background:#f7d872;opacity:.32}.hero:after{position:absolute;content:"";width:78px;height:78px;right:10%;top:48px;border:4px dashed #e3ad31;border-radius:50%;opacity:.48}.hero-copy{position:relative;z-index:2;max-width:560px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.9px;line-height:1.6}.eyebrow-line{width:23px;height:3px;background:var(--orange);border-radius:4px}.hero h1,.page-intro h1{margin:13px 0 14px;color:var(--blue-dark);font-size:clamp(38px,5vw,59px);font-weight:1000;letter-spacing:-1.7px;line-height:1.04}.dark .hero h1,.dark .page-intro h1{color:var(--ink)}.hero h1 em{color:var(--orange);font-style:normal}.hero-copy>p,.page-intro p{max-width:520px;color:var(--subtle);font-size:15px;line-height:1.75}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.hero-note{display:flex;align-items:center;gap:9px;margin-top:25px;color:var(--subtle);font-size:12px;font-weight:800}.note-avatar{display:grid;place-items:center;width:28px;height:28px;color:#805d0a;background:#ffe9a3;border-radius:50%}.hero-art{position:absolute;right:2%;top:8px;bottom:61px;width:400px;display:grid;place-items:center}.art-glow{position:absolute;width:220px;height:220px;border-radius:50%;background:#ffdb70;opacity:.42}.orbit{position:absolute;border:3px solid rgba(37,99,166,.21);border-radius:50%}.orbit-one{width:285px;height:285px}.orbit-two{width:355px;height:200px;border-color:#ed88503d;transform:rotate(-26deg)}.art-compass{position:relative;display:grid;place-items:center;width:174px;height:174px;color:#fff;background:var(--blue);border:8px solid #fff;border-radius:36% 64% 48% 52%/54% 40% 60% 46%;box-shadow:0 8px 0 var(--blue-dark),0 16px 30px #21497533;transform:rotate(-7deg);animation:float 5s ease-in-out infinite}.art-compass svg{width:72px;height:72px}.art-compass:before{content:"";position:absolute;top:-19px;right:-19px;bottom:-19px;left:-19px;border:3px dashed rgba(37,99,166,.25);border-radius:50%}.art-compass:after{content:"";position:absolute;top:15px;right:15px;bottom:15px;left:15px;border:2px solid rgba(255,255,255,.3);border-radius:28% 72% 51% 49%}.art-years{position:absolute;top:12%;display:flex;align-items:center;gap:8px;color:var(--blue-dark);font-size:12px;font-weight:900}.art-years i{width:24px;height:3px;background:var(--orange);border-radius:5px}.art-caption{position:absolute;bottom:12%;right:10%;color:var(--blue-dark);font-size:12px;font-weight:1000;letter-spacing:1px}.art-side-label{position:absolute;top:50%;right:-4%;color:var(--blue);font-size:10px;font-weight:900;letter-spacing:1px;writing-mode:vertical-rl}.hero-bottom{position:absolute;right:0;bottom:0;left:0;display:flex;height:66px;align-items:center;gap:35px;padding:0 38px;background:var(--surface);border-top:2px solid rgba(37,99,166,.1)}.hero-bottom>div{display:flex;align-items:center;gap:10px}.hero-bottom strong{color:var(--blue);font-size:17px;font-weight:1000}.hero-bottom span:not(.hero-bottom-seal){color:var(--subtle);font-size:11px;font-weight:800}.hero-bottom-seal{display:grid;place-items:center;width:35px;height:35px;margin-left:auto;color:#715108;background:#ffe9a3;border-radius:50%}.section{margin-top:66px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:21px}.section-heading h2{margin:5px 0 0;color:var(--blue-dark);font-size:29px;font-weight:1000;letter-spacing:-.5px}.dark .section-heading h2{color:var(--ink)}.section-heading>p{margin:0;color:var(--subtle);font-size:13px;line-height:1.6}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.feature-card{position:relative;min-height:215px;padding:22px;overflow:hidden;text-align:left;background:var(--surface);border:2px solid var(--border);border-radius:18px;cursor:pointer;transition:transform .2s,border-color .2s,box-shadow .2s}.feature-card:hover{transform:translateY(-4px);border-color:var(--yellow);box-shadow:var(--shadow)}.feature-number{position:absolute;top:18px;right:19px;color:#b6c7d9;font-size:13px;font-weight:1000}.feature-icon{display:grid;place-items:center;width:46px;height:46px;margin-bottom:17px;color:var(--blue);background:var(--blue-pale);border-radius:14px}.feature-card:nth-child(2) .feature-icon{color:#9a6800;background:#fff2c4}.feature-card:nth-child(3) .feature-icon{color:#2b805e;background:#e1f4e9}.feature-card h3{margin:0 0 7px;color:var(--ink);font-size:20px;font-weight:1000}.feature-card p{margin:0;color:var(--subtle);font-size:13px;line-height:1.6}.feature-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--blue);font-size:12px;font-weight:900}.quote-banner{position:relative;margin-top:62px;padding:38px 32px;overflow:hidden;text-align:center;background:#fff4cc;border:2px solid #f2df9e;border-radius:20px}.dark .quote-banner{background:#463c25;border-color:#71603b}.quote-mark{color:#d29d21;font-size:50px;font-weight:1000;line-height:.8}.quote-banner blockquote{margin:8px 0 13px;color:var(--ink);font-size:22px;font-weight:900;line-height:1.4}.quote-attribution{color:#9a720e;font-size:11px;font-weight:1000;letter-spacing:1px}.quote-watermark{position:absolute;right:30px;bottom:22px;width:56px;height:56px;color:#d29d21;opacity:.2}.topics-section{margin-top:60px}.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);background:none;border:0;font-size:13px;font-weight:900;cursor:pointer}.topic-row{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.topic-item{display:flex;align-items:center;gap:11px;min-width:0;padding:14px;text-align:left;background:var(--surface);border:2px solid var(--border);border-radius:14px;cursor:pointer;transition:border .18s,transform .18s}.topic-item:hover{transform:translateY(-2px);border-color:var(--yellow)}.topic-date{flex:0 0 auto;color:var(--blue);font-size:11px;font-weight:1000}.topic-item b{flex:1;font-size:12px;font-weight:900}.topic-arrow{color:var(--orange)}.site-footer{display:flex;max-width:1160px;align-items:center;justify-content:space-between;gap:14px;margin:auto;padding:23px 28px 27px;color:var(--subtle);border-top:2px solid var(--line);font-size:11px;font-weight:700}.site-footer div{display:flex;gap:20px}.site-footer a:hover{color:var(--blue)}.api-notice{max-width:1100px;margin:12px auto 0;padding:11px 15px;color:#9d332d;background:#ffebe8;border:2px solid #f3b4ad;border-radius:11px;font-size:13px;font-weight:800}.provision-shell{padding-top:0}.provision-card{display:grid;grid-template-columns:minmax(200px,1fr) minmax(260px,1.6fr);align-items:center;gap:18px 30px;padding:24px}.provision-card h2{margin:7px 0}.provision-card form{display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:12px}.provision-card label{display:grid;gap:7px;font-size:12px;font-weight:800}.provision-card input{width:100%;min-width:0;padding:11px 12px;color:var(--ink);background:var(--surface);border:1px solid var(--border);border-radius:10px}.provision-card .success-note,.provision-card .error-note{grid-column:1 / -1;margin:0}.page-intro{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:30px}.page-intro h1{margin:8px 0 10px;font-size:clamp(34px,4vw,47px)}.page-intro p{margin:0;font-size:14px}.intro-stamp{display:flex;flex:0 0 112px;width:112px;min-height:100px;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:10px;color:#795c12;background:#fff2bf;border:2px solid #efd983;border-radius:18px;font-size:11px;font-weight:1000;text-align:center}.intro-stamp svg{color:#d39616}.search-field{display:flex;align-items:center;gap:10px;margin-bottom:22px;padding:0 14px;color:var(--subtle);background:var(--surface);border:2px solid var(--border);border-radius:13px}.search-field:focus-within{border-color:var(--blue)}.search-field input{width:100%;min-width:0;height:48px;color:var(--ink);background:transparent;border:0;outline:0;font-size:13px}.search-field>span{flex:0 0 auto;color:var(--subtle);font-size:10px}.assessment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.assessment-card,.glass-card{background:var(--surface);border:2px solid var(--border);box-shadow:var(--shadow)}.assessment-card{position:relative;min-width:0;min-height:263px;padding:19px 19px 59px;border-radius:17px;transition:transform .18s,border-color .18s}.assessment-card:hover{transform:translateY(-3px);border-color:#f1ce62}.card-topline{display:flex;align-items:center;justify-content:space-between}.pill{display:inline-flex;width:fit-content;align-items:center;padding:5px 9px;color:var(--blue);background:var(--blue-pale);border-radius:20px;font-size:10px;font-weight:1000}.pill-purple{color:#835d12;background:#fff0bb}.card-index{color:var(--orange)}.assessment-card h3{margin:15px 0 6px;color:var(--ink);font-size:17px;font-weight:1000;line-height:1.3}.card-unit{margin:0 0 9px;color:var(--blue);font-size:12px;font-weight:900;line-height:1.5}.muted{color:var(--subtle)}.card-description{margin:0;font-size:12px;line-height:1.55}.assessment-meta{display:flex;flex-wrap:wrap;gap:13px;margin-top:13px;color:var(--subtle);font-size:11px;font-weight:800}.assessment-meta span{display:inline-flex;align-items:center;gap:5px}.assessment-meta svg{color:var(--orange)}.card-action{position:absolute;right:15px;bottom:11px;left:15px;display:flex;height:38px;align-items:center;justify-content:space-between;padding:0 5px;color:var(--blue);background:none;border:0;border-top:1px solid var(--line);font-size:12px;font-weight:1000;cursor:pointer}.card-action:disabled{color:var(--subtle);cursor:not-allowed}.textbook-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:19px;align-items:start}.textbook-nav{position:sticky;top:18px;display:flex;flex-direction:column;gap:14px;padding:20px;border-radius:16px}.textbook-nav a{display:flex;gap:9px;align-items:baseline;color:var(--subtle);font-size:12px;font-weight:800;line-height:1.5}.textbook-nav a:hover{color:var(--blue)}.textbook-nav a span{color:var(--orange);font-size:13px;font-weight:1000}.chapters{display:flex;flex-direction:column;gap:14px}.chapter-card{padding:24px;border-radius:17px;scroll-margin-top:20px}.chapter-head{display:flex;align-items:center;justify-content:space-between}.chapter-number{color:var(--blue);font-size:10px;font-weight:1000;letter-spacing:.8px}.chapter-deco{color:var(--orange)}.chapter-card h2{margin:12px 0 8px;font-size:23px;font-weight:1000}.chapter-summary{max-width:780px;color:var(--subtle);font-size:13px;line-height:1.7}.chapter-columns{display:grid;grid-template-columns:.9fr 1.1fr;gap:25px;margin:20px 0 15px;padding-top:17px;border-top:2px solid var(--line)}.chapter-columns h4{margin:0 0 12px;color:var(--blue-dark);font-size:13px;font-weight:1000}.bullet-row{display:flex;align-items:baseline;gap:9px;color:var(--subtle);font-size:12px;line-height:1.7}.bullet-row .gold-dot{flex:0 0 auto;width:7px;height:7px;background:var(--orange);border-radius:50%}.glossary-entry,.people-list{margin:0 0 7px;color:var(--subtle);font-size:12px;line-height:1.7}.people-list b{color:var(--blue)}.source-note{display:flex;align-items:center;gap:6px;color:var(--blue);font-size:11px;font-weight:900}.sources-panel{margin-top:18px;padding:22px;border-radius:16px}.sources-panel h3{margin:0;font-size:19px;font-weight:1000}.sources-panel>p{max-width:850px;font-size:12px;line-height:1.7}.source-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 20px}.source-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;color:var(--subtle);border-bottom:1px solid var(--line);font-size:12px}.source-links a:hover{color:var(--blue)}.quiz-shell{max-width:850px}.back-link{display:flex;align-items:center;gap:8px;padding:0;color:var(--blue);background:none;border:0;font-size:13px;font-weight:900;cursor:pointer}.quiz-progress-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:33px 0 16px}.quiz-progress-head h1{margin:6px 0 0;font-size:clamp(23px,3vw,32px);font-weight:1000}.question-count{flex:0 0 auto;color:var(--blue);font-size:20px;font-weight:1000}.question-count i{color:var(--subtle);font-size:14px;font-style:normal}.quiz-progress,.mini-progress{width:100%;height:9px;overflow:hidden;background:var(--line);border-radius:10px}.quiz-progress>span,.mini-progress>span{display:block;height:100%;background:var(--yellow);border-radius:inherit;transition:width .3s ease}.question-card{margin-top:16px;padding:29px;border-radius:18px}.question-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.question-points{color:var(--subtle);font-size:12px;font-weight:800}.question-card h2{margin:19px 0 22px;font-size:22px;font-weight:1000;line-height:1.5}.answer-options{display:flex;flex-direction:column;gap:9px}.answer-option{display:flex;min-height:52px;align-items:center;gap:12px;padding:11px 14px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:12px;text-align:left;font-size:13px;font-weight:700;cursor:pointer;transition:border .18s,background .18s}.answer-option:hover{border-color:var(--blue)}.answer-option.selected{border-color:var(--blue);background:var(--blue-pale)}.option-indicator{display:grid;flex:0 0 21px;width:21px;height:21px;place-items:center;color:#fff;border:2px solid #b9c9da;border-radius:50%}.selected .option-indicator{background:var(--blue);border-color:var(--blue)}.answer-input-label{display:flex;flex-direction:column;gap:8px;color:var(--subtle);font-size:13px;font-weight:900}.answer-input{width:100%;height:48px;padding:0 13px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:11px;font-size:15px}.matching-options{display:grid;gap:12px}.matching-options label{display:grid;grid-template-columns:1fr minmax(190px,1.2fr);align-items:center;gap:12px;color:var(--ink);font-size:13px;font-weight:900}.matching-options select,.login-modal input,.login-modal select{min-width:0;height:45px;padding:0 11px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:10px;font-size:13px}.quiz-navigation{display:flex;justify-content:space-between;gap:12px;margin-top:28px;padding-top:19px;border-top:2px solid var(--line)}.quiz-hint{display:flex;align-items:center;justify-content:center;gap:7px;color:var(--subtle);font-size:12px;font-weight:700;text-align:center}.quiz-hint svg{flex:0 0 auto;color:var(--green)}.result-hero{max-width:740px;margin:0 auto;padding:27px 35px 35px;text-align:center;border-radius:20px}.result-hero .back-link{margin-bottom:22px}.result-seal{display:grid;width:68px;height:68px;place-items:center;margin:0 auto 17px;color:#966e10;background:#fff0bc;border:2px solid #efd983;border-radius:50%}.result-hero h1{margin:8px 0 5px;color:var(--blue-dark);font-size:34px;font-weight:1000}.result-score{color:var(--blue);font-size:49px;font-weight:1000}.result-score span{color:var(--subtle);font-size:21px}.result-grade{color:var(--subtle);font-size:13px}.result-grade b{color:var(--orange);font-size:19px}.result-grade-scale{display:flex;max-width:440px;flex-wrap:wrap;justify-content:center;gap:8px 14px;margin:20px auto 0;padding-top:15px;color:var(--subtle);border-top:2px solid var(--line);font-size:11px;font-weight:800}.explanations{max-width:920px;margin:42px auto 0}.explanation-card{display:grid;grid-template-columns:36px minmax(0,1fr) 24px;align-items:start;gap:13px;margin-bottom:10px;padding:18px;border-radius:14px}.explanation-number{color:var(--orange);font-size:14px;font-weight:1000}.explanation-card h3{margin:0 0 8px;font-size:15px;font-weight:1000;line-height:1.5}.explanation-card p{margin:4px 0;color:var(--subtle);font-size:12px;line-height:1.7}.explanation-card p b{color:var(--ink)}.explanation-mark{color:var(--green)}.answer-wrong .explanation-mark{color:var(--red)}.answer-correct{border-left:5px solid var(--green)}.answer-wrong{border-left:5px solid var(--red)}.profile-hero{display:flex;align-items:center;gap:17px;padding:23px 27px;border-radius:17px}.profile-avatar{display:grid;flex:0 0 auto;width:60px;height:60px;place-items:center;color:#fff;background:var(--orange);border-radius:18px;font-size:25px;font-weight:1000}.profile-hero h1{margin:5px 0;color:var(--blue-dark);font-size:25px;font-weight:1000}.profile-hero p{margin:0;font-size:12px}.profile-stat{display:flex;flex-direction:column;gap:4px;margin-left:auto;padding-left:22px;border-left:2px solid var(--line)}.profile-stat b{color:var(--blue);font-size:24px;font-weight:1000}.profile-stat b small{color:var(--subtle);font-size:13px}.profile-stat span{color:var(--subtle);font-size:10px;font-weight:800}.dashboard-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;margin-top:17px}.progress-card,.profile-next,.chart-card{padding:22px;border-radius:17px}.compact{margin-bottom:18px}.compact h2{font-size:21px}.gold-icon{color:#d39616}.progress-overview{display:grid;grid-template-columns:165px 1fr;align-items:center;gap:18px}.donut-wrap{position:relative;width:150px;height:150px}.donut-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none}.donut-label b{font-size:27px;font-weight:1000}.donut-label span{color:var(--subtle);font-size:11px}.progress-overview h3{font-size:16px;font-weight:1000}.progress-overview p,.profile-next p{font-size:12px;line-height:1.7}.progress-overview small{display:block;margin-top:6px;color:var(--subtle);font-size:10px}.profile-next{display:flex;flex-direction:column;align-items:start}.profile-next .feature-icon{margin-bottom:11px}.profile-next h2{margin:8px 0;font-size:20px;font-weight:1000}.profile-next .button{margin-top:auto}.teacher-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.stat-card{display:grid;grid-template-columns:40px 1fr;align-items:center;gap:5px 12px;min-height:130px;padding:17px;border-radius:16px}.stat-icon{grid-row:1 / 4;display:grid;width:39px;height:39px;place-items:center;color:var(--blue);background:var(--blue-pale);border-radius:13px}.stat-card .eyebrow{font-size:9px}.stat-card>b{color:var(--blue);font-size:23px;font-weight:1000}.stat-card>small{color:var(--subtle);font-size:10px}.stat-name{overflow:hidden;font-size:15px!important;text-overflow:ellipsis;white-space:nowrap}.teacher-charts{grid-template-columns:1fr 1fr}.student-progress{margin:15px 0}.student-progress>div:first-child{display:flex;justify-content:space-between;gap:10px;margin-bottom:6px;font-size:12px}.student-progress b{font-weight:900}.student-progress span{color:var(--subtle)}.chart-content{display:flex;align-items:center;justify-content:space-around;gap:7px}.grade-legend{display:grid;gap:9px;color:var(--subtle);font-size:11px}.grade-legend span{display:flex;align-items:center;gap:7px}.grade-legend i{width:9px;height:9px;border-radius:50%}.grade-legend b{margin-left:auto;color:var(--ink)}.filters{display:flex;flex-wrap:wrap;align-items:end;gap:10px;margin:18px 0}.filters label{display:grid;flex:1 1 150px;gap:6px;color:var(--subtle);font-size:11px;font-weight:900}.filters select,.filters input{width:100%;min-width:0;height:42px;padding:0 10px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:10px;font-size:12px}.button-clear{min-height:42px;padding:0 13px;font-size:11px}.results-table-wrap{overflow-x:auto;border-radius:15px}.results-table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}.results-table th{padding:13px 14px;color:var(--blue-dark);background:var(--blue-pale);font-size:11px;font-weight:1000;white-space:nowrap}.results-table td{padding:12px 14px;border-top:1px solid var(--line)}.results-table td:first-child{white-space:nowrap}.table-avatar{width:27px;height:27px;margin-right:8px;vertical-align:middle}.score-cell{display:flex;min-width:88px;align-items:center;gap:8px}.score-cell .mini-progress{width:50px;height:7px}.grade-badge{display:inline-grid;width:28px;height:28px;place-items:center;color:#fff;background:var(--green);border-radius:9px;font-weight:1000}.grade-4{background:#4487bd}.grade-3{background:#d1941f}.grade-2{background:var(--red)}.empty-table,.empty-state{display:flex;align-items:center;gap:12px;padding:20px;color:var(--subtle);border-radius:15px;font-size:12px;line-height:1.6}.empty-state{flex-direction:column;max-width:540px;margin:auto;padding:42px 25px;text-align:center}.coverage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.coverage-card{padding:15px;border-radius:13px}.coverage-card>b{display:block;margin-bottom:9px;font-size:13px;font-weight:1000}.coverage-card>span{color:var(--subtle);font-size:11px}.coverage-card .mini-progress{margin-top:9px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:grid;place-items:center;overflow-y:auto;padding:20px;background:#1b2f447a;animation:fade .18s both}.login-modal{position:relative;width:min(100%,440px);max-height:calc(100dvh - 32px);overflow-y:auto;padding:30px;background:var(--surface-solid);border:2px solid var(--border);border-radius:20px;box-shadow:0 18px 55px #172f483b}.modal-close{position:absolute;top:14px;right:14px;display:grid;width:36px;height:36px;place-items:center;color:var(--subtle);background:var(--surface);border:2px solid var(--border);border-radius:10px;cursor:pointer}.modal-emblem{display:grid;width:52px;height:52px;place-items:center;margin-bottom:15px;color:#fff;background:var(--blue);border-radius:15px}.login-modal h2{margin:8px 0;color:var(--blue-dark);font-size:26px;font-weight:1000}.login-modal>.muted{margin-bottom:20px;font-size:13px;line-height:1.5}.login-modal form{display:flex;flex-direction:column;gap:13px}.login-modal label{display:flex;flex-direction:column;gap:7px;color:var(--subtle);font-size:12px;font-weight:900}.button-wide{width:100%;margin-top:4px}.security-note{display:flex;align-items:center;justify-content:center;gap:6px;margin:16px 0 0;color:var(--subtle);font-size:10px}.security-note svg{color:var(--green)}.error-note{padding:10px;color:#a53832;background:#ffebe8;border-radius:9px;font-size:12px;line-height:1.5}.role-options{display:grid;gap:10px;margin-top:20px}.role-option{display:grid;grid-template-columns:42px minmax(0,1fr) 18px;grid-template-rows:auto auto;align-items:center;gap:3px 12px;padding:13px;color:var(--ink);background:var(--surface);border:2px solid var(--border);border-radius:13px;text-align:left;cursor:pointer;transition:border-color .18s,background .18s}.role-option:hover{background:var(--blue-pale);border-color:var(--blue)}.role-option>span{grid-row:1 / 3;display:grid;width:40px;height:40px;place-items:center;color:var(--blue);background:var(--blue-pale);border-radius:12px}.role-option>b{align-self:end;font-size:13px;font-weight:1000}.role-option>small{align-self:start;color:var(--subtle);font-size:11px}.role-option>svg{grid-column:3;grid-row:1 / 3;color:var(--orange)}.modal-back-link{display:flex;align-items:center;justify-content:center;gap:6px;margin:13px auto 0;padding:6px;color:var(--blue);background:none;border:0;font-size:12px;font-weight:900;cursor:pointer}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fade{0%{opacity:0}to{opacity:1}}@keyframes float{0%,to{transform:rotate(-7deg) translateY(0)}50%{transform:rotate(-4deg) translateY(-7px)}}@media(max-width:960px){.site-header{padding:0 20px}.nav-links{gap:1px}.nav-links button{padding:9px;font-size:12px}.hero{padding-left:40px}.hero-art{right:-64px;opacity:.65}.hero-copy{max-width:520px}.assessment-grid,.coverage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:680px){.provision-card,.provision-card form{grid-template-columns:1fr}.site-header{min-height:66px;padding:0 12px}.brand{gap:7px}.brand-mark{width:36px;height:36px;border-radius:11px}.brand b{font-size:18px}.brand small{font-size:7px;letter-spacing:.35px}.mobile-menu{display:grid;order:3;width:36px;height:36px}.header-actions{order:2;gap:5px;margin:0 7px 0 auto}.icon-button{width:35px;height:35px}.user-chip{padding:2px;border:0;background:transparent}.user-chip span:last-child{display:none}.avatar{width:28px;height:28px}.logout-button{display:grid;width:34px;height:34px}.header-login{min-height:35px;padding:0 11px;font-size:11px}.nav-links{position:absolute;top:calc(100% + 5px);right:10px;left:10px;display:none;flex-direction:column;align-items:stretch;gap:3px;margin:0;padding:10px;background:var(--surface-solid);border:2px solid var(--border);border-radius:15px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links button{padding:12px;text-align:left;font-size:14px}.page-shell{padding:29px 15px 52px}.api-notice{margin:9px 12px 0;font-size:11px}.home-shell{padding-top:15px}.hero{min-height:0;padding:34px 21px 80px;border-radius:20px}.hero h1{max-width:450px;font-size:clamp(37px,10vw,47px)}.hero-copy>p{max-width:420px;font-size:14px}.hero-art{display:none}.art-compass{width:116px;height:116px;border-width:6px;border-radius:32%}.art-compass svg{width:52px;height:52px}.orbit-one{width:185px;height:185px}.orbit-two{width:215px;height:130px}.art-years{top:0;font-size:10px}.art-caption{right:4px;bottom:0;font-size:10px}.art-side-label{display:none}.hero-bottom{height:60px;gap:13px;padding:0 14px}.hero-bottom>div{gap:6px}.hero-bottom strong{font-size:13px}.hero-bottom span:not(.hero-bottom-seal){font-size:8px}.hero-bottom-seal{display:none}.section{margin-top:45px}.section-heading{align-items:start;gap:8px}.section-heading h2{font-size:23px}.section-heading>p{display:none}.feature-grid{grid-template-columns:1fr;gap:10px}.feature-card{min-height:0;padding:18px}.feature-icon{width:40px;height:40px;margin-bottom:11px}.feature-card h3{font-size:18px}.feature-card p{font-size:12px}.feature-link{margin-top:12px}.quote-banner{margin-top:40px;padding:25px 15px 23px}.quote-banner blockquote{font-size:17px}.quote-watermark{right:10px;bottom:7px;width:37px}.topics-section{margin-top:42px}.topic-row{grid-template-columns:1fr;gap:8px}.topic-item{padding:12px}.topic-date{font-size:10px}.topic-item b{font-size:12px}.site-footer{flex-direction:column;align-items:start;padding:17px 15px;font-size:10px}.site-footer div{flex-wrap:wrap;gap:8px 15px}.page-intro{align-items:start;gap:12px;margin-bottom:22px}.page-intro h1{font-size:clamp(30px,8vw,38px);letter-spacing:-1px}.page-intro p{font-size:12px;line-height:1.55}.intro-stamp{flex:0 0 75px;width:75px;min-height:75px;gap:4px;padding:6px;border-radius:14px;font-size:9px}.intro-stamp svg{width:19px}.search-field{margin-bottom:15px}.search-field input{height:44px;font-size:12px}.assessment-grid{grid-template-columns:1fr;gap:11px}.assessment-card{min-height:0;padding:16px 16px 54px}.card-action{right:13px;left:13px}.textbook-layout{grid-template-columns:1fr;gap:14px}.textbook-nav{position:static;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:15px}.textbook-nav>.eyebrow{grid-column:1 / -1}.textbook-nav a{font-size:11px}.chapter-card{padding:17px}.chapter-card h2{font-size:19px}.chapter-columns{grid-template-columns:1fr;gap:10px}.source-links{grid-template-columns:1fr}.quiz-progress-head{margin:26px 0 13px}.quiz-progress-head h1{font-size:23px}.question-count{font-size:17px}.question-card{padding:18px}.question-card h2{margin:17px 0;font-size:18px;line-height:1.45}.answer-option{min-height:48px;padding:10px;font-size:12px}.matching-options label{grid-template-columns:1fr;gap:6px}.quiz-navigation{margin-top:20px;padding-top:15px}.quiz-navigation .button{min-height:43px;padding:0 12px;font-size:11px}.quiz-hint{align-items:start;font-size:10px;line-height:1.5}.result-hero{padding:20px 15px 25px}.result-hero h1{font-size:29px}.result-score{font-size:42px}.result-grade-scale{gap:7px 10px;font-size:10px}.explanations{margin-top:30px}.explanation-card{grid-template-columns:26px minmax(0,1fr) 18px;gap:8px;padding:13px}.explanation-card h3{font-size:13px}.explanation-card p{font-size:11px}.explanation-mark svg{width:18px}.profile-hero{flex-wrap:wrap;gap:10px;padding:17px}.profile-avatar{width:48px;height:48px}.profile-hero>div:nth-child(2){flex:1 1 calc(100% - 60px);min-width:0}.profile-hero h1{font-size:19px}.profile-stat{flex:1;margin:4px 0 0;padding:0;border:0}.profile-stat b{font-size:21px}.profile-stat span{font-size:9px}.dashboard-grid,.teacher-charts{grid-template-columns:1fr}.progress-card,.profile-next,.chart-card{padding:17px}.progress-overview{grid-template-columns:105px minmax(0,1fr);gap:11px}.donut-wrap{width:102px;height:102px}.donut-label b{font-size:22px}.progress-overview h3{font-size:14px}.progress-overview p{font-size:11px}.teacher-stats{grid-template-columns:1fr;gap:9px}.stat-card{min-height:96px}.coverage-grid{grid-template-columns:1fr}.filters{align-items:stretch}.filters label{flex:1 1 100%}.filters select,.filters input,.button-clear{width:100%}.results-table{min-width:620px}.login-modal{padding:25px 19px}}@media(max-width:370px){.site-header{padding:0 8px}.brand{gap:5px}.brand-mark{width:33px;height:33px}.brand b{font-size:16px}.brand small{font-size:6px}.header-actions{gap:3px;margin-right:4px}.icon-button{width:32px;height:32px}.logout-button{width:31px;height:31px}.mobile-menu{width:33px;height:33px}.header-login{min-height:33px;padding:0 8px;font-size:10px}.page-shell{padding-right:12px;padding-left:12px}.hero{padding-right:16px;padding-left:16px}.hero-bottom{gap:7px;padding:0 9px}.hero-bottom>div{gap:4px}.hero-bottom strong{font-size:11px}.hero-bottom span:not(.hero-bottom-seal){font-size:7px}.quiz-navigation .button{gap:5px;padding:0 9px;font-size:10px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}