:root {
  --navy-950: #020b1f;
  --navy-900: #06142d;
  --navy-850: #0a1a39;
  --navy-800: #102349;
  --ink: #0a1630;
  --muted: #53617a;
  --line: #dbe2ee;
  --line-dark: rgba(255,255,255,.14);
  --white: #fff;
  --surface: #f6f8fc;
  --blue: #3357ff;
  --blue-strong: #2143ee;
  --violet: #7054ff;
  --cyan: #43bff5;
  --success: #087f5b;
  --warning: #ad6500;
  --danger: #c92a2a;
  --shadow-sm: 0 5px 18px rgba(8,21,49,.08);
  --shadow-md: 0 18px 48px rgba(4,15,40,.16);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --container: 1180px;
  --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;background:var(--white);color:var(--ink);font:400 16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:var(--blue-strong);text-decoration-thickness:.08em;text-underline-offset:.18em}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.12;letter-spacing:-.025em}
h1{font-size:clamp(2.65rem,5.8vw,5.35rem)}
h2{font-size:clamp(2rem,4vw,3.65rem)}
h3{font-size:clamp(1.2rem,2vw,1.55rem)}
p{color:var(--muted)}
ul,ol{padding-left:1.25rem}
summary{cursor:pointer}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.skip-link{position:fixed;left:1rem;top:-5rem;z-index:9999;padding:.75rem 1rem;background:var(--white);color:var(--ink);border-radius:var(--radius-sm);box-shadow:var(--shadow-md)}
.skip-link:focus{top:1rem}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.narrow{width:min(calc(100% - 40px),820px);margin-inline:auto}
.section{padding:clamp(72px,9vw,128px) 0}
.section-tight{padding:64px 0}
.surface{background:var(--surface)}
.dark{background:var(--navy-950);color:var(--white)}
.dark p,.dark .muted{color:#bdc9df}
.muted{color:var(--muted)}
.eyebrow{margin-bottom:.8rem;color:var(--blue-strong);font-size:.75rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}
.lead{font-size:clamp(1.05rem,1.7vw,1.3rem);line-height:1.65}
.text-gradient{color:var(--blue)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.site-header{position:sticky;top:0;z-index:100;background:rgba(2,11,31,.94);color:var(--white);border-bottom:1px solid var(--line-dark);backdrop-filter:blur(16px)}
.header-inner{height:78px;display:flex;align-items:center;gap:2rem}
.brand{display:inline-flex;align-items:center;gap:.65rem;color:var(--white);font-size:1.45rem;font-weight:800;letter-spacing:.18em;text-decoration:none}
.brand-mark{position:relative;width:27px;height:28px;border:2px solid #7690ff;border-top-color:var(--violet);border-radius:7px 7px 11px 11px;transform:skewY(-5deg)}
.brand-mark::after{content:"";position:absolute;left:7px;top:5px;width:8px;height:11px;border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(42deg)}
.primary-nav{margin-left:auto;display:flex;align-items:center;gap:1.8rem}
.primary-nav a{color:#edf2ff;text-decoration:none;font-weight:650;font-size:.94rem}
.primary-nav a:hover{color:#9fb0ff}
.header-action{padding:.65rem 1rem;border:1px solid rgba(255,255,255,.55);border-radius:var(--radius-sm)}
.menu-toggle{display:none;margin-left:auto;border:1px solid var(--line-dark);border-radius:var(--radius-sm);background:transparent;color:#fff;padding:.65rem}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;min-height:50px;padding:.75rem 1.2rem;border:1px solid transparent;border-radius:var(--radius-sm);font-weight:800;text-decoration:none;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--blue),#526bff);color:#fff;box-shadow:0 12px 25px rgba(51,87,255,.25)}
.btn-primary:hover{background:linear-gradient(135deg,var(--blue-strong),#435cf6)}
.btn-secondary{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(2,11,31,.4)}
.btn-light{border-color:var(--line);color:var(--ink);background:#fff}
.btn-small{min-height:40px;padding:.45rem .85rem;font-size:.9rem}
.button-row{display:flex;flex-wrap:wrap;gap:1rem}

.hero{position:relative;min-height:710px;background:var(--navy-950);color:#fff;overflow:hidden}
.hero-media{position:absolute;inset:0 0 0 38%;margin:0}
.hero-media picture,.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center right}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--navy-950) 0%,rgba(2,11,31,.96) 7%,rgba(2,11,31,.44) 38%,rgba(2,11,31,0) 68%);pointer-events:none}
.hero-inner{position:relative;z-index:2;min-height:710px;display:flex;align-items:center}
.hero-copy{width:min(58%,690px);padding:76px 0 88px}
.hero h1{margin:0 0 1.4rem;font-size:clamp(3.15rem,5vw,4.85rem);max-width:760px}
.hero .lead{max-width:640px;color:#d6def0;margin-bottom:2rem}
.hero-price{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin:1.55rem 0 .4rem;font-size:1.2rem;color:#d7def0}
.hero-price strong{font-size:1.5rem;color:#fff}
.hero-note{font-size:.92rem;color:#aebbd2}

.feature-strip{border-bottom:1px solid var(--line);background:#fff}
.feature-strip-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:0;padding:42px 0}
.feature-item{display:grid;grid-template-columns:54px 1fr;gap:1rem;padding:0 2rem;border-right:1px solid var(--line)}
.feature-item:first-child{padding-left:0}.feature-item:last-child{border:0;padding-right:0}
.icon-disc{width:54px;height:54px;display:grid;place-items:center;border-radius:50%;background:var(--navy-900);color:#6f82ff}
.icon-disc svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.feature-item h3{margin:.1rem 0 .3rem;font-size:1.08rem}.feature-item p{margin:0;font-size:.94rem}

.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(3rem,7vw,7rem);align-items:center}
.section-heading{max-width:760px;margin-bottom:3rem}
.section-heading.center{text-align:center;margin-inline:auto}
.domain-list{display:grid;gap:.8rem}
.domain-row{display:grid;grid-template-columns:50px minmax(180px,1fr) minmax(140px,1.4fr) 75px;align-items:center;gap:1rem;padding:1rem;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff}
.domain-number{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;background:#eef1ff;color:var(--blue);font-weight:850}
.domain-title{font-weight:780}
.meter{height:7px;border-radius:999px;background:#e8ecf3;overflow:hidden}
.meter span{display:block;height:100%;width:var(--progress,0);border-radius:inherit;background:linear-gradient(90deg,var(--blue),var(--violet))}
.domain-weight{text-align:right;font-weight:800}
.rounding-note{margin-top:1rem;font-size:.88rem}

.lab-copy-list{display:grid;gap:1.4rem;margin:2rem 0}
.lab-copy-item{display:grid;grid-template-columns:44px 1fr;gap:1rem}
.lab-copy-item strong{display:block;margin-bottom:.2rem}.lab-copy-item p{margin:0;font-size:.95rem}
.mini-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:10px;background:#eef1ff;color:var(--blue)}
.lab-preview{overflow:hidden;border:1px solid #17305f;border-radius:var(--radius);background:var(--navy-900);color:#fff;box-shadow:var(--shadow-md)}
.lab-topbar{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.15rem;border-bottom:1px solid var(--line-dark);font-size:.86rem}
.lab-body{display:grid;grid-template-columns:180px 1fr;min-height:350px}
.lab-context{padding:1.15rem;border-right:1px solid var(--line-dark)}
.lab-context p{font-size:.82rem;color:#afbdd5}
.fake-log{padding:1.15rem}
.log-row{display:grid;grid-template-columns:90px 90px 1fr;gap:.75rem;padding:.55rem .2rem;border-bottom:1px solid rgba(255,255,255,.08);font:500 .75rem/1.3 ui-monospace,SFMono-Regular,Menlo,monospace;color:#c8d6ef}
.log-dot{display:inline-block;width:7px;height:7px;margin-right:.45rem;border-radius:50%;background:#ef4444}.log-dot.ok{background:#22c55e}
.lab-question{padding:1rem 1.15rem;background:rgba(112,84,255,.09);border-top:1px solid var(--line-dark)}
.choice-row{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:.75rem}
.choice{padding:.45rem .7rem;border:1px solid rgba(255,255,255,.2);border-radius:7px;color:#dbe4f6;font-size:.78rem}.choice.selected{border-color:#7054ff;background:rgba(112,84,255,.18)}

.adaptive-band{position:relative;overflow:hidden;background:linear-gradient(105deg,var(--navy-950),#071d43);color:#fff}
.adaptive-band::after{content:"";position:absolute;width:380px;height:380px;right:-120px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(112,84,255,.2),transparent 70%)}
.adaptive-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:5rem;align-items:center}
.check-list{list-style:none;padding:0;margin:1.5rem 0 0}.check-list li{position:relative;padding-left:1.8rem;margin:.7rem 0;color:var(--muted)}.check-list li::before{content:"✓";position:absolute;left:0;color:#536dff;font-weight:900}.adaptive-band .check-list li{color:#d7e0f0}.adaptive-band .check-list li::before{color:#8094ff}
.disclaimer-panel{padding:2rem;border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);background:rgba(255,255,255,.03)}
.disclaimer-panel p:last-child{margin-bottom:0}

.includes-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.include-item{padding:2rem;background:#fff}.include-item h3{margin-bottom:.5rem}.include-item p{margin:0}
.study-plan{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:3rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.week{padding:1.5rem;border-right:1px solid var(--line)}.week:last-child{border:0}.week strong{display:block;color:var(--blue);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}.week span{display:block;margin-top:.4rem;font-weight:750}

.pricing-grid{display:grid;grid-template-columns:1fr minmax(360px,.72fr);gap:5rem;align-items:center}
.price-facts{display:grid;gap:1.2rem;margin:2rem 0}.price-fact{display:grid;grid-template-columns:42px 1fr;gap:1rem}.price-fact p{margin:0;font-size:.94rem}
.pricing-panel{padding:2.2rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.price{font-size:3.4rem;font-weight:850;line-height:1;color:var(--ink);letter-spacing:-.04em}
.pricing-panel hr{border:0;border-top:1px solid var(--line);margin:1.5rem 0}
.pricing-panel .btn{width:100%;margin-top:1rem}
.secure-note{text-align:center;margin:.8rem 0 0;font-size:.82rem}

.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line);padding:0}
.faq-list summary{display:flex;justify-content:space-between;gap:2rem;padding:1.25rem 0;font-weight:780;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:"+";color:var(--blue);font-size:1.3rem}.faq-list details[open] summary::after{content:"−"}
.faq-list details p{max-width:850px;padding:0 0 1.25rem;margin:0}

.site-footer{background:var(--navy-950);color:#fff;padding:58px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr repeat(3,.8fr);gap:3rem}
.footer-grid h3{font-size:.9rem;letter-spacing:.02em}.footer-grid ul{list-style:none;padding:0;margin:0}.footer-grid li{margin:.45rem 0}.footer-grid a{color:#c9d4e8;text-decoration:none;font-size:.9rem}.footer-grid p{color:#aebbd2;font-size:.9rem}.footer-link-button{padding:0;border:0;background:transparent;color:#c9d4e8;font-size:.9rem;text-align:left}.footer-link-button:hover{text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:2rem;margin-top:3rem;padding-top:1.2rem;border-top:1px solid var(--line-dark);color:#91a2bf;font-size:.78rem}

/* Public content and SEO pages */
.page-hero{padding:92px 0 76px;background:linear-gradient(115deg,var(--navy-950),#0a214e);color:#fff}
.page-hero h1{max-width:900px;margin-bottom:1.4rem;font-size:clamp(2.7rem,5vw,4.7rem)}
.page-hero p{max-width:780px;color:#ced8e9;font-size:1.15rem}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:2rem;font-size:.85rem;color:#aebbd2}.breadcrumbs a{color:#dce5f5}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:5rem;align-items:start}
.article-body{font-size:1.05rem}.article-body h2{margin-top:3.2rem;font-size:2.15rem}.article-body h3{margin-top:2rem}.article-body p,.article-body li{color:#384760}.article-body table{width:100%;border-collapse:collapse;margin:2rem 0;font-size:.95rem}.article-body th,.article-body td{padding:.9rem;text-align:left;border-bottom:1px solid var(--line)}.article-body th{background:var(--surface)}
.toc{position:sticky;top:104px;padding:1.2rem;border-left:3px solid var(--blue);background:var(--surface)}.toc strong{display:block;margin-bottom:.75rem}.toc a{display:block;padding:.3rem 0;color:var(--muted);font-size:.9rem;text-decoration:none}.toc a:hover{color:var(--blue)}
.notice{padding:1.25rem 1.4rem;border-left:4px solid var(--blue);background:#f0f3ff;border-radius:0 var(--radius-sm) var(--radius-sm) 0}.notice p:last-child{margin-bottom:0}
.cta-band{padding:2rem;border-radius:var(--radius);background:var(--navy-900);color:#fff}.cta-band p{color:#c8d4e8}.review-date{font-size:.82rem;color:var(--muted)}

/* Forms and messages */
.form-shell{width:min(calc(100% - 40px),560px);margin:64px auto;padding:2rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:1rem;margin-top:2rem}.contact-grid .portal-panel label{display:grid;gap:.35rem;margin:.8rem 0;font-weight:700}.contact-grid input,.contact-grid select,.contact-grid textarea{width:100%;padding:.65rem;border:1px solid #b8c4d6;border-radius:7px}
.field{margin-bottom:1.2rem}.field label{display:block;margin-bottom:.4rem;font-weight:720}.field input,.field select,.field textarea{width:100%;min-height:48px;padding:.7rem .8rem;border:1px solid #b9c4d7;border-radius:var(--radius-sm);background:#fff;color:var(--ink)}.field textarea{min-height:130px;resize:vertical}.field-hint{margin:.35rem 0 0;font-size:.8rem}.checkbox{display:flex;gap:.7rem;align-items:flex-start}.checkbox input{margin-top:.3rem}
.alert{padding:1rem 1.2rem;margin-bottom:1.2rem;border-radius:var(--radius-sm);border:1px solid}.alert-error{color:#7a1b1b;background:#fff0f0;border-color:#f3b8b8}.alert-success{color:#075c43;background:#eafbf5;border-color:#9de2cd}.alert-info{color:#153e75;background:#eef5ff;border-color:#b9d5ff}
.cookie-banner{position:fixed;z-index:500;left:20px;right:20px;bottom:20px;display:flex;align-items:center;justify-content:space-between;gap:2rem;max-width:1080px;margin:auto;padding:1.15rem 1.3rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-md)}.cookie-banner[hidden]{display:none}.cookie-banner strong{display:block;margin-bottom:.2rem}.cookie-banner p{max-width:720px;margin:0;font-size:.86rem}.cookie-banner .button-row{flex-wrap:nowrap}
.cookie-banner details{margin-top:.55rem}.cookie-banner summary{color:var(--blue-strong);font-size:.85rem;font-weight:750}.cookie-banner details label{display:inline-flex;gap:.35rem;align-items:center;margin:.55rem .7rem .3rem 0;font-size:.8rem}.cookie-banner details .btn{margin-top:.4rem}

/* Student portal */
.app-body{background:#f4f7fb;min-height:100vh}
.app-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr;grid-template-rows:68px 1fr}
.app-topbar{grid-column:1/-1;display:flex;align-items:center;padding:0 1.4rem;background:var(--navy-950);color:#fff;border-bottom:1px solid var(--line-dark)}
.app-topbar .brand{font-size:1.15rem}.app-course-name{margin-left:1.2rem;padding-left:1.2rem;border-left:1px solid var(--line-dark);font-weight:650}.app-user{margin-left:auto;display:flex;align-items:center;gap:1rem}.app-user a{color:#fff;text-decoration:none}
.app-sidebar{grid-row:2;background:linear-gradient(180deg,var(--navy-950),#08204a);color:#fff;padding:1rem .75rem 1.4rem;overflow-y:auto}
.app-nav{display:grid;gap:.18rem}.app-nav a{display:flex;align-items:center;gap:.75rem;min-height:44px;padding:.65rem .8rem;border-radius:8px;color:#e2e9f6;text-decoration:none;font-size:.92rem;font-weight:620}.app-nav a:hover,.app-nav a.active{background:linear-gradient(135deg,var(--blue),#4e66f8);color:#fff}.app-nav svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8}.device-link{display:block;margin-top:1.5rem;padding:1rem;border:1px solid var(--line-dark);border-radius:var(--radius-sm);color:#fff;text-decoration:none;font-size:.82rem}
.sidebar-logout{margin-top:1rem}.sidebar-logout button{width:100%;padding:.7rem;border:1px solid var(--line-dark);border-radius:7px;background:transparent;color:#dbe5f5;text-align:left}.sidebar-logout button:hover{background:rgba(255,255,255,.08)}
.app-main{grid-column:2;grid-row:2;padding:2rem;overflow-x:hidden}.app-container{max-width:1240px;margin:0 auto}.app-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;margin-bottom:1.5rem}.app-heading h1{margin:0;font-size:2.25rem}.app-heading p{margin:.3rem 0 0}
.continue-panel{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;padding:1.6rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 2px 8px rgba(11,28,61,.04)}.continue-panel h2{font-size:1.65rem}.continue-meta{font-size:.9rem;color:var(--muted)}.continue-goals{padding-left:2rem;border-left:1px solid var(--line)}.continue-goals ul{list-style:none;padding:0}.continue-goals li{position:relative;padding-left:1.7rem;margin:.75rem 0;color:#42516b}.continue-goals li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
.progress-panel{margin-top:1rem;padding:1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.week-track{display:flex;align-items:center;gap:0;margin:1rem 0 1.4rem}.week-step{position:relative;flex:1;text-align:center;font-size:.7rem;color:var(--muted)}.week-step::before{content:"";display:block;width:28px;height:28px;margin:0 auto .35rem;border:1px solid #bdc7d7;border-radius:50%;background:#fff}.week-step::after{content:"";position:absolute;z-index:-1;top:14px;left:-50%;width:100%;height:2px;background:#dce2ec}.week-step:first-child::after{display:none}.week-step.done::before,.week-step.current::before{background:var(--blue);border-color:var(--blue)}.week-step.done::after,.week-step.current::after{background:var(--blue)}
.portal-domains{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}.portal-domain{display:grid;grid-template-columns:minmax(240px,1fr) minmax(180px,1.25fr) 58px;gap:1rem;align-items:center;padding:.8rem 1rem;border-bottom:1px solid var(--line)}.portal-domain:last-child{border:0}.portal-domain strong{font-size:.88rem}
.portal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}.portal-panel{padding:1.25rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.portal-panel h3{font-size:1rem}.portal-panel p,.portal-panel li{font-size:.85rem}.portal-list{list-style:none;padding:0}.portal-list li{padding:.65rem 0;border-bottom:1px solid var(--line)}
.collection-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.collection-card,.empty-state{padding:1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.collection-card h2,.empty-state h2{font-size:1.25rem}.collection-meta{color:var(--blue);font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.collection-footer{display:flex;justify-content:space-between;gap:1rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--line);font-size:.85rem}.plan-weeks{display:grid;gap:.8rem}.plan-week{display:grid;grid-template-columns:1fr minmax(200px,.35fr);gap:2rem;padding:1.25rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.plan-week.current{border-left:5px solid var(--blue)}.plan-week h2{font-size:1.2rem;margin:.3rem 0}.plan-week span{color:var(--blue);font-size:.78rem;font-weight:800;text-transform:uppercase}.portal-search{padding:1rem;margin-bottom:1rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.portal-search>div{display:flex;gap:.6rem}.portal-search input{flex:1;min-height:42px;padding:.6rem;border:1px solid #b7c3d5;border-radius:7px}.content-table{width:100%;border-collapse:collapse;background:#fff}.content-table th,.content-table td{padding:.85rem;border:1px solid var(--line);text-align:left;vertical-align:top}.content-table th{background:#eef2f8}.content-table small{display:block;margin-top:.4rem;color:var(--muted)}.flashcard{max-width:760px;padding:2rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}.flashcard h2{font-size:2rem}.flashcard-en{font-style:italic}.flashcard details{margin:1.5rem 0;padding:1rem;border:1px solid var(--line);border-radius:8px}.notebook-list{display:grid;gap:1rem}.notebook-entry{display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:center;padding:1.3rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.notebook-entry h2{font-size:1.1rem}.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.account-grid .portal-panel h2{font-size:1.2rem}.account-grid label,.portal-panel form label{display:grid;gap:.35rem;margin:.8rem 0;font-size:.85rem;font-weight:700}.account-grid input,.portal-panel form input,.portal-panel form select,.portal-panel form textarea{width:100%;padding:.65rem;border:1px solid #b8c4d6;border-radius:7px}.account-details div{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;border-bottom:1px solid var(--line)}.account-details dt{color:var(--muted)}.account-details dd{margin:0;text-align:right;font-weight:750}
.course-layout{display:grid;grid-template-columns:280px 1fr;gap:2rem}.module-list{position:sticky;top:88px;align-self:start;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}.module-list a{display:block;padding:.8rem 1rem;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:.88rem}.module-list a.active{border-left:4px solid var(--blue);background:#f1f4ff;font-weight:750}.lesson{padding:2rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.lesson h1{font-size:2.35rem}.lesson h2{margin-top:2.4rem;font-size:1.65rem}.lesson-nav{display:flex;justify-content:space-between;gap:1rem;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--line)}

/* Quiz, adaptive practice and labs */
.quiz-shell{max-width:900px;margin:0 auto}.quiz-top{display:flex;justify-content:space-between;gap:1rem;align-items:center;margin-bottom:1rem}.timer{font:750 1.2rem/1 ui-monospace,SFMono-Regular,Menlo,monospace}.quiz-progress{height:7px;background:#dfe5ee;border-radius:999px;margin-bottom:1.4rem;overflow:hidden}.quiz-progress span{display:block;height:100%;background:var(--blue)}.question-panel{padding:2rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.question-panel h1{font-size:1.55rem;line-height:1.4}.option-list{display:grid;gap:.75rem;margin:1.5rem 0}.option{display:flex;gap:.9rem;align-items:flex-start;padding:1rem;border:1px solid #bdc7d7;border-radius:var(--radius-sm);background:#fff;text-align:left}.option:hover,.option.selected{border-color:var(--blue);background:#f1f4ff}.option-key{width:28px;height:28px;display:grid;place-items:center;flex:0 0 28px;border:1px solid #bac5d8;border-radius:50%;font-weight:800}.question-actions{display:flex;justify-content:flex-end;gap:1rem}.explanation{margin-top:1.4rem;padding:1.2rem;border-left:4px solid var(--blue);background:#f0f4ff}.no-back-notice{font-size:.82rem;color:var(--muted)}
.answer-fieldset,.structured-response{border:0;padding:0;margin:1.5rem 0}.answer-instruction{font-weight:750;color:var(--ink)}.structured-response legend{margin-bottom:1rem;font-weight:800}.order-row,.match-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(150px,.45fr);gap:1rem;align-items:center;padding:1rem;border:1px solid var(--line);border-bottom:0;background:#fff}.order-row:first-of-type,.match-row:first-of-type{border-radius:var(--radius-sm) var(--radius-sm) 0 0}.order-row:last-of-type,.match-row:last-of-type{border-bottom:1px solid var(--line);border-radius:0 0 var(--radius-sm) var(--radius-sm)}.order-row select,.match-row select{width:100%;min-height:44px;padding:.55rem;border:1px solid #aebbd0;border-radius:7px;background:#fff;color:var(--ink)}
.lab-workspace{display:grid;grid-template-columns:260px 1fr;min-height:620px;border:1px solid #17305f;border-radius:var(--radius);overflow:hidden;background:var(--navy-900);color:#fff}.lab-sidebar{padding:1.25rem;border-right:1px solid var(--line-dark)}.lab-main{padding:1.5rem}.lab-main p,.lab-sidebar p{color:#b8c5da}.lab-toolbar{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:1rem}.lab-tool{padding:.5rem .7rem;border:1px solid var(--line-dark);border-radius:7px;background:rgba(255,255,255,.04);color:#fff}.solution{margin-top:1rem;padding:1.2rem;border:1px solid rgba(112,84,255,.45);border-radius:var(--radius-sm);background:rgba(112,84,255,.1)}
.lab-dataset{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;max-height:430px;margin:1rem 0 1.5rem;padding:.2rem;overflow:auto}.lab-data-card{padding:1rem;border:1px solid var(--line-dark);border-radius:8px;background:rgba(255,255,255,.035)}.lab-data-card dl{margin:.7rem 0 0}.lab-data-card dl div{display:grid;grid-template-columns:minmax(90px,.55fr) 1fr;gap:.5rem;padding:.35rem 0;border-top:1px solid rgba(255,255,255,.08)}.lab-data-card dt{color:#91a3c2;font-size:.75rem}.lab-data-card dd{margin:0;overflow-wrap:anywhere;color:#e2e9f6;font-size:.8rem}.lab-task{display:grid;gap:.65rem;margin:1rem 0;padding:1rem;border:1px solid var(--line-dark);border-radius:8px}.lab-task legend{max-width:100%;padding:0 .3rem;color:#fff}.lab-task label{display:grid;gap:.4rem}.lab-task span{color:#aebdd6;font-size:.82rem}.lab-task textarea,.lab-task input:not([type=checkbox]):not([type=radio]){width:100%;padding:.75rem;border:1px solid #456087;border-radius:7px;background:#051329;color:#fff;resize:vertical}.lab-choice-list{display:grid;gap:.55rem}.lab-choice-list label{grid-template-columns:auto 1fr;align-items:start;padding:.65rem;border:1px solid rgba(255,255,255,.1);border-radius:7px;background:rgba(255,255,255,.025)}.lab-choice-list input{margin-top:.2rem}.lab-response-table{display:grid;gap:.65rem}.lab-response-table label{grid-template-columns:minmax(180px,1fr) minmax(180px,.8fr);align-items:center;padding:.65rem;border-bottom:1px solid rgba(255,255,255,.1)}.lab-saved-response{margin:.4rem 0 0;padding:.75rem;overflow:auto;white-space:pre-wrap;border:1px solid rgba(255,255,255,.1);border-radius:7px;background:#051329;color:#e2e9f6;font:inherit}.solution-item{padding:.7rem 0;border-bottom:1px solid rgba(255,255,255,.12)}.solution-item:last-child{border:0}.solution-item p{white-space:pre-wrap}
.tutor-shell{display:grid;grid-template-rows:1fr auto;height:calc(100vh - 160px);min-height:520px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}.tutor-messages{padding:1.5rem;overflow-y:auto}.message{max-width:78%;margin-bottom:1rem;padding:1rem 1.15rem;border-radius:var(--radius)}.message.assistant{background:#eef2ff}.message.user{margin-left:auto;background:var(--navy-900);color:#fff}.message p:last-child{margin-bottom:0}.tutor-form{display:grid;grid-template-columns:1fr auto;gap:.7rem;padding:1rem;border-top:1px solid var(--line)}.tutor-form textarea{min-height:52px;max-height:130px;padding:.75rem;border:1px solid #b9c4d7;border-radius:var(--radius-sm);resize:vertical}

/* Admin CRM */
.admin-body{background:var(--navy-950);color:#fff;min-height:100vh}.admin-shell{min-height:100vh;display:grid;grid-template-columns:235px 1fr;grid-template-rows:56px 1fr}.admin-topbar{grid-column:1/-1;display:flex;align-items:center;padding:0 1.2rem;border-bottom:1px solid var(--line-dark);background:#020b1f}.admin-topbar .brand{font-size:1rem}.environment{margin-left:1.2rem;padding-left:1.2rem;border-left:1px solid var(--line-dark);font-size:.82rem;color:#cad5e8}.admin-account{margin-left:auto;color:#dce5f5;font-size:.86rem}.admin-sidebar{grid-row:2;padding:.8rem;background:#041128;border-right:1px solid var(--line-dark)}.admin-sidebar a{display:flex;min-height:40px;align-items:center;padding:.55rem .7rem;border-radius:6px;color:#c9d5e8;text-decoration:none;font-size:.84rem}.admin-sidebar a.active,.admin-sidebar a:hover{background:var(--blue);color:#fff}.admin-main{grid-column:2;grid-row:2;padding:1.2rem;background:radial-gradient(circle at 95% 0,rgba(51,87,255,.09),transparent 30%),var(--navy-950)}.admin-container{max-width:1380px;margin:0 auto}.admin-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.admin-heading h1{font-size:1.5rem;margin:0}.status-strip{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line-dark);border-radius:7px;margin-bottom:1rem}.status-item{padding:.8rem;text-align:center;border-right:1px solid var(--line-dark);font-size:.82rem}.status-item:last-child{border:0}.status-off{color:#ff9898}.admin-grid{display:grid;grid-template-columns:1fr 300px;gap:1rem}.admin-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin-bottom:1rem}.admin-metric{padding:1rem;border:1px solid var(--line-dark);border-radius:7px;background:#07162f}.admin-metric span{display:block;color:#afbdd2;font-size:.76rem}.admin-metric strong{font-size:1.7rem}.admin-panel{border:1px solid var(--line-dark);border-radius:7px;background:#06142c;overflow:hidden}.admin-panel-title{padding:.8rem 1rem;border-bottom:1px solid var(--line-dark);font-size:1rem;font-weight:750}.admin-panel-body{padding:1rem}.admin-filters{display:grid;grid-template-columns:1.6fr repeat(3,.8fr);gap:.6rem;margin-bottom:.7rem}.admin-filters input,.admin-filters select{width:100%;min-height:38px;padding:.45rem .55rem;border:1px solid #365071;border-radius:5px;background:#081a38;color:#fff;font-size:.78rem}.data-table-wrap{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;font-size:.75rem}.data-table th,.data-table td{padding:.65rem;border:1px solid #29415f;text-align:left}.data-table th{background:#081a38;color:#d7e1f1}.badge{display:inline-flex;padding:.18rem .45rem;border:1px solid;border-radius:4px;font-size:.7rem}.badge-review{color:#75a7ff;border-color:#346bc5;background:rgba(51,87,255,.13)}.badge-ok{color:#7ee2ae;border-color:#27825c;background:rgba(8,127,91,.13)}.badge-warn{color:#ffc46e;border-color:#a6650c;background:rgba(173,101,0,.13)}.admin-control{padding-bottom:1rem;margin-bottom:1rem;border-bottom:1px solid var(--line-dark)}.admin-control:last-child{border:0}.admin-control label{display:block;font-size:.78rem;color:#b5c2d7}.admin-control strong{display:block;font-size:1.65rem}.switch-row{display:flex;align-items:center;justify-content:space-between;margin:.8rem 0}.switch{width:48px;height:26px;border:0;border-radius:999px;background:#52627a;position:relative}.switch::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff}.switch.on{background:var(--blue)}.switch.on::after{left:25px}.audit-list{display:grid;gap:.5rem;font-size:.75rem}.audit-row{display:grid;grid-template-columns:145px 120px 1fr;gap:.7rem;padding:.5rem 0;border-bottom:1px solid var(--line-dark);color:#bfcaDB}
.admin-panel label{display:grid;gap:.35rem;margin:.7rem 0;color:#c4d0e2;font-size:.78rem}.admin-panel textarea,.admin-panel input,.admin-panel select{width:100%;padding:.55rem;border:1px solid #365071;border-radius:5px;background:#081a38;color:#fff}.admin-details div{display:flex;justify-content:space-between;gap:1rem;padding:.6rem 0;border-bottom:1px solid var(--line-dark)}.admin-details dt{color:#aebbd0}.admin-details dd{margin:0;text-align:right}.editorial-preview{margin:1rem 0;padding:1rem;border:1px solid var(--line-dark);border-radius:7px;background:#081a38}.editorial-preview>p{color:#b9c7dc}.editorial-review-section{padding:1rem 0;border-top:1px solid var(--line-dark)}.editorial-review-section h4{margin:.1rem 0 .7rem;color:#dbe6f7}.editorial-value-list{display:grid;gap:.55rem;padding-left:1.3rem}.editorial-value-list>li{padding-left:.25rem}.editorial-value-map{margin:.35rem 0}.editorial-value-map div{align-items:flex-start}.editorial-value-map dd{max-width:72%;overflow-wrap:anywhere}.editorial-source-list{display:grid;gap:.7rem;padding-left:1.2rem}.pagination{display:flex;align-items:center;justify-content:flex-end;gap:.8rem;margin-top:1rem}.pagination [aria-disabled="true"]{opacity:.5;pointer-events:none}.admin-login{margin-top:8vh;color:var(--ink)}.admin-login label{display:grid;gap:.35rem;margin:.8rem 0}.admin-login input{width:100%;padding:.65rem;border:1px solid #b8c4d6;border-radius:7px}

/* Responsive */
@media (max-width:1000px){
  .primary-nav{gap:1rem}.primary-nav a:not(.header-action){display:none}.menu-toggle{display:inline-flex}
  .hero-media{left:28%}.hero-copy{width:67%}
  .two-col,.adaptive-grid,.pricing-grid{gap:3rem}.article-layout{grid-template-columns:1fr}.toc{position:static;order:-1}
  .feature-strip-inner{grid-template-columns:1fr}.feature-item{padding:1.2rem 0;border:0;border-bottom:1px solid var(--line)}.feature-item:last-child{border:0}
  .app-shell{grid-template-columns:76px 1fr}.app-nav a{justify-content:center}.app-nav span,.device-link,.sidebar-logout{display:none}.app-sidebar{padding-inline:.55rem}.app-main{padding:1.4rem}
  .lab-workspace{grid-template-columns:1fr}.lab-sidebar{border-right:0;border-bottom:1px solid var(--line-dark)}
  .portal-grid{grid-template-columns:1fr 1fr}.continue-panel{grid-template-columns:1fr}.continue-goals{padding:1rem 0 0;border-left:0;border-top:1px solid var(--line)}
  .admin-shell{grid-template-columns:72px 1fr}.admin-sidebar a{justify-content:center;font-size:0}.admin-sidebar a::first-letter{font-size:1rem}.admin-grid{grid-template-columns:1fr}.admin-metrics{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .container,.narrow{width:min(calc(100% - 28px),var(--container))}.section{padding:68px 0}.header-inner{height:68px}.brand{font-size:1.1rem}.primary-nav{display:none}.primary-nav.open{position:absolute;display:grid;left:0;right:0;top:68px;padding:1rem 20px 1.3rem;background:var(--navy-950);border-bottom:1px solid var(--line-dark)}.primary-nav.open a{display:block}.menu-toggle{display:inline-flex}
  .hero{min-height:auto}.hero-inner{min-height:auto;display:block}.hero-copy{width:100%;padding:38px 0 36px}.hero h1{font-size:clamp(2.4rem,11.5vw,3.3rem)}.hero-media{position:relative;inset:auto;height:300px}.hero-media::after{background:linear-gradient(180deg,var(--navy-950) 0%,rgba(2,11,31,.15) 22%,rgba(2,11,31,0) 55%)}.hero-media picture,.hero-media img{object-position:center}
  .button-row .btn{width:100%}.domain-row{grid-template-columns:42px minmax(0,1fr) auto}.domain-number{grid-column:1;grid-row:1}.domain-title{grid-column:2;grid-row:1}.domain-weight{grid-column:3;grid-row:1;white-space:nowrap}.domain-row .meter{grid-column:2/4;grid-row:2}.two-col,.adaptive-grid,.pricing-grid,.contact-grid{grid-template-columns:1fr}.lab-body{grid-template-columns:1fr}.lab-context{display:none}.pricing-grid{gap:2.5rem}.includes-grid{grid-template-columns:1fr}.study-plan{grid-template-columns:1fr 1fr}.week:nth-child(2){border-right:0}.week:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:.4rem 0}
  .page-hero{padding:68px 0 56px}.article-body table{display:block;overflow-x:auto}
  .app-shell{display:block}.app-topbar{height:58px}.app-course-name{display:none}.app-sidebar{position:fixed;z-index:50;left:0;top:58px;bottom:0;width:270px;transform:translateX(-100%);transition:transform .2s ease}.app-sidebar.open{transform:none}.app-sidebar .device-link,.app-sidebar .sidebar-logout{display:block}.app-main{padding:1rem}.app-heading{display:block}.app-heading h1{font-size:1.85rem}.portal-grid,.collection-grid,.account-grid{grid-template-columns:1fr}.portal-domain{grid-template-columns:1fr 54px}.portal-domain .meter{grid-column:1/-1}.plan-week{grid-template-columns:1fr;gap:1rem}.notebook-entry{grid-template-columns:1fr}.course-layout{grid-template-columns:1fr}.module-list{position:static}.lesson{padding:1.25rem}.lesson h1{font-size:1.9rem}.week-track{overflow-x:auto}.week-step{min-width:74px}.order-row,.match-row{grid-template-columns:1fr}.lab-workspace{grid-template-columns:1fr}.lab-sidebar{border-right:0;border-bottom:1px solid var(--line-dark)}.lab-dataset{grid-template-columns:1fr}.lab-response-table label{grid-template-columns:1fr}.tutor-form{grid-template-columns:1fr}.message{max-width:92%}
  .admin-shell{display:block}.admin-topbar{height:54px;gap:.55rem}.admin-topbar .brand{font-size:.88rem}.environment,.admin-account{display:none}.admin-sidebar{display:block;position:fixed;z-index:60;left:0;top:54px;bottom:0;width:270px;overflow-y:auto;transform:translateX(-100%);transition:transform .2s ease}.admin-sidebar.open{transform:none}.admin-sidebar a{justify-content:flex-start;font-size:.84rem}.admin-main{padding:.8rem}.admin-metrics{grid-template-columns:1fr 1fr}.status-strip{grid-template-columns:1fr}.status-item{border-right:0;border-bottom:1px solid var(--line-dark)}.status-item:last-child{border:0}.admin-filters{grid-template-columns:1fr 1fr}.audit-row{grid-template-columns:1fr}.cookie-banner{display:block;left:10px;right:10px;bottom:10px}.cookie-banner .button-row{margin-top:1rem}.cookie-banner .btn{flex:1}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.study-plan{grid-template-columns:1fr}.week{border-right:0!important;border-bottom:1px solid var(--line)!important}.week:last-child{border-bottom:0!important}.admin-metrics{grid-template-columns:1fr}.admin-filters{grid-template-columns:1fr}.hero-price{font-size:1rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}