:root{
  --bg:#ffffff;--surface:#ffffff;--soft:#f6f8fc;--soft-blue:#f1f6ff;--text:#0c1220;--muted:#667085;
  --border:#dfe6ef;--blue:#0a67f4;--blue-dark:#0758d1;--violet:#6d28d9;--green:#138a5b;--amber:#b7791f;
  --red:#c92a2a;--shadow:0 18px 48px rgba(17,42,85,.08);--radius:18px;--container:1440px;
  --sidebar:286px;--header:78px;
  --fs-base:1rem;--fs-lead:1.125rem;--fs-card:1.25rem;--fs-subsection:1.5rem;--fs-section:2rem;--fs-page:2.5rem;--fs-feature:3rem;--fs-hero:4rem;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}.container{width:min(calc(100% - 64px),var(--container));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.nav{min-height:82px;display:grid;grid-template-columns:240px 1fr 240px;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-family:Poppins,Inter,sans-serif}.brand-mark{width:44px;height:44px;border-radius:13px;background:linear-gradient(145deg,var(--blue),var(--violet));color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;box-shadow:0 10px 20px rgba(10,103,244,.2)}.brand>span:last-child{display:grid;line-height:1.05}.brand strong{font-size:20px;letter-spacing:-.02em}.brand small{font-size:16px;color:var(--muted);margin-top:4px;font-weight:500;letter-spacing:.04em}.nav-links{display:flex;justify-content:center;gap:36px;font-family:Poppins,Inter,sans-serif;font-weight:500}.nav-links a:hover{color:var(--blue)}.nav-actions{display:flex;justify-content:flex-end}.btn{min-height:48px;border:1px solid transparent;border-radius:999px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:Poppins,Inter,sans-serif;font-size:16px;font-weight:600;transition:.18s}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{background:#fff;border-color:var(--border)}.btn-secondary:hover,.btn-ghost:hover{background:var(--soft)}.btn-ghost{background:transparent;border-color:var(--border)}.btn-large{min-height:56px;padding:0 30px}.btn-google{background:#fff;border-color:var(--border);flex-direction:column;height:auto;padding:14px 20px}.btn-google span{font-family:Inter,sans-serif;color:var(--muted);font-weight:400;font-size:16px}.hero{padding:82px 0 84px}.hero-inner{text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:Poppins,Inter,sans-serif;font-size:16px;font-weight:700;letter-spacing:.08em;color:var(--blue);text-transform:uppercase}.hero h1,.install-hero h1{max-width:1150px;margin:18px auto 0;font-family:Poppins,Inter,sans-serif;font-size:64px;line-height:1.07;letter-spacing:-.045em;font-weight:700}.hero h1 span,.install-hero h1 span{color:var(--violet)}.hero p{max-width:800px;margin:24px auto 0;color:var(--muted);font-size:20px}.hero-actions{margin-top:34px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}.hero-card{max-width:1100px;margin:78px auto 0;padding:28px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}.hero-card>div{background:#fff;padding:22px;text-align:left;display:grid;gap:6px}.hero-card span{color:var(--muted);font-size:16px}.hero-card strong{font-family:Poppins,Inter,sans-serif;font-size:20px}.section{padding:92px 0}.soft-section{background:var(--soft)}.section-head{text-align:center;max-width:920px;margin:0 auto 52px}.section-head h2{font-family:Poppins,Inter,sans-serif;font-size:40px;line-height:1.17;letter-spacing:-.035em;margin:12px 0 0}.section-head p{font-size:18px;color:var(--muted);margin:16px 0 0}.cards{display:grid;gap:24px}.cards.three{grid-template-columns:repeat(3,1fr)}.card,.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 24px rgba(17,42,85,.035)}.card{padding:28px}.card-feature{background:var(--soft-blue);border-color:#9ec2ff}.card h3{font-family:Poppins,Inter,sans-serif;font-size:24px;margin:18px 0 10px;line-height:1.25}.card p{font-size:17px;color:var(--muted);margin:0}.badge,.status-pill{display:inline-flex;align-items:center;border-radius:999px;padding:7px 12px;font-size:16px;font-weight:700;background:#e9f7f1;color:var(--green)}.badge.muted{background:#f0f2f6;color:var(--muted)}.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.flow-step{background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px;display:grid;gap:8px}.flow-step b{font-family:Poppins,Inter,sans-serif;color:var(--blue);font-size:20px}.flow-step strong{font-family:Poppins,Inter,sans-serif;font-size:22px}.flow-step span{font-size:16px;color:var(--muted)}.credit-card{max-width:760px;margin:auto;border-radius:24px;background:linear-gradient(135deg,#071b3b,#151b40);color:#fff;padding:38px;display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:center;text-align:center;box-shadow:0 24px 64px rgba(7,27,59,.22)}.credit-card div:not(.credit-eq){display:grid;gap:8px}.credit-card span{font-size:17px;color:#cbd5e1}.credit-card strong{font-family:Poppins,Inter,sans-serif;font-size:40px}.credit-eq{font-size:34px;color:#8fb8ff}.install-wrap{width:min(calc(100% - 48px),1180px);margin:0 auto;padding:60px 0 90px}.install-hero{text-align:center;margin-bottom:42px}.install-hero h1{font-size:56px}.install-hero p{max-width:780px;margin:20px auto 0;color:var(--muted);font-size:18px}.install-grid{display:grid;grid-template-columns:.8fr 1.5fr;gap:24px;align-items:start}.panel{padding:28px}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}.panel-head>div{display:flex;align-items:center;gap:12px}.panel-head h2{font-family:Poppins,Inter,sans-serif;font-size:24px;margin:0}.step-chip{display:inline-grid;place-items:center;min-width:46px;height:32px;padding:0 10px;border-radius:999px;background:var(--soft-blue);color:var(--blue);font-size:16px;font-weight:700}.status-pill.good{background:#e9f7f1;color:var(--green)}.status-pill.warn{background:#fff4df;color:var(--amber)}.check-list{display:grid;gap:0}.check-row{padding:15px 0;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;gap:18px;font-size:16px}.check-row:last-child{border-bottom:0}.ok{color:var(--green)}.bad{color:var(--red)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.field{display:grid;gap:8px}.field-full{grid-column:1/-1}.field label{font-family:Poppins,Inter,sans-serif;font-size:16px;font-weight:600}.field input,.field select,.field textarea{width:100%;min-height:52px;border:1px solid var(--border);border-radius:12px;background:#fff;color:var(--text);padding:12px 14px;outline:none;font-size:16px}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(10,103,244,.12)}.field small{font-size:16px;color:var(--muted)}.form-divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:16px;font-weight:700;margin-top:6px}.form-divider:before,.form-divider:after{content:"";height:1px;background:var(--border);flex:1}.install-note{background:var(--soft);border:1px solid var(--border);border-radius:14px;padding:18px}.install-note p{margin:5px 0 0;color:var(--muted);font-size:16px}.alert{border-radius:14px;padding:16px 18px;margin-bottom:20px;font-size:16px}.alert ul{margin:8px 0 0;padding-left:22px}.alert-error{background:#fff0f0;border:1px solid #ffc9c9;color:#8d1717}.alert-success{background:#ecf9f2;border:1px solid #b8e7d0;color:#0d6845}.auth-page{min-height:calc(100vh - 83px);background:var(--soft);display:grid;place-items:center;padding:48px 20px}.auth-card{width:min(100%,520px);background:#fff;border:1px solid var(--border);border-radius:22px;padding:38px;box-shadow:var(--shadow)}.auth-card h1{font-family:Poppins,Inter,sans-serif;font-size:40px;line-height:1.16;margin:12px 0 8px}.auth-card>p{color:var(--muted);font-size:17px;margin:0 0 26px}.stack-form{display:grid;gap:18px}.admin-body{background:var(--soft)}.admin-shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar) 1fr}.sidebar{position:sticky;top:0;height:100vh;background:#fff;border-right:1px solid var(--border);padding:24px 18px;overflow:auto}.brand-admin{padding:0 8px 24px;border-bottom:1px solid var(--border)}.side-nav{display:grid;gap:4px;padding-top:20px}.side-nav a,.side-group{min-height:48px;padding:12px 14px;border-radius:12px;font-size:16px}.side-nav a:hover{background:var(--soft-blue);color:var(--blue)}.side-nav a.is-disabled{color:#98a2b3;pointer-events:none;display:flex;justify-content:space-between;gap:12px}.side-nav a em{font-style:normal;font-size:16px}.side-group{font-family:Poppins,Inter,sans-serif;font-weight:700;color:var(--muted);margin-top:10px}.admin-main{min-width:0}.admin-topbar{height:var(--header);position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 30px}.admin-topbar-title{display:grid}.admin-topbar-title strong{font-family:Poppins,Inter,sans-serif;font-size:20px}.admin-topbar-title span{font-size:16px;color:var(--muted)}.admin-user{display:flex;align-items:center;gap:16px;font-size:16px}.admin-content{padding:34px 30px 72px;max-width:1540px;margin:auto}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;margin-bottom:28px}.page-head h1{font-family:Poppins,Inter,sans-serif;font-size:40px;line-height:1.2;margin:8px 0 8px;letter-spacing:-.035em}.page-head p{font-size:17px;color:var(--muted);margin:0;max-width:760px}.breadcrumb{font-size:16px;color:var(--muted)}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.metric{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;display:grid;gap:4px}.metric span,.metric small{font-size:16px;color:var(--muted)}.metric strong{font-family:Poppins,Inter,sans-serif;font-size:40px;line-height:1.1}.content-grid{display:grid;gap:22px;margin-top:22px}.content-grid.two{grid-template-columns:1fr 1fr}.clean-list{margin:0;padding-left:22px;display:grid;gap:12px}.clean-list li{font-size:16px}.health-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.health-item{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px}.health-item>div{display:grid}.health-item strong,.health-item span,.health-item b{font-size:16px}.health-item span{color:var(--muted)}.health-dot{width:13px;height:13px;border-radius:50%}.ok-bg{background:#2fb171}.warn-bg{background:#e8a23e}.top-gap{margin-top:22px}.muted-copy{color:var(--muted);font-size:16px}.academic-form{padding:22px 0;border-top:1px solid var(--border)}.academic-form:first-of-type{border-top:0}.academic-form-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}.academic-form-head h3{font-family:Poppins,Inter,sans-serif;font-size:24px;margin:0}.academic-form-head span{font-size:16px;color:var(--muted)}.chapter-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.chapter-card{background:var(--soft);border:1px solid var(--border);border-radius:13px;padding:18px;display:grid;gap:5px}.chapter-card span,.chapter-card small{font-size:16px;color:var(--muted)}.chapter-card strong{font-size:17px}.mobile-only{display:none}.icon-btn{width:46px;height:46px;border-radius:12px;border:1px solid var(--border);background:#fff;font-size:20px}
@media(max-width:1100px){.nav{grid-template-columns:220px 1fr 180px}.nav-links{gap:22px}.cards.three,.flow-grid{grid-template-columns:repeat(2,1fr)}.install-grid{grid-template-columns:1fr}.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.container{width:min(calc(100% - 30px),var(--container))}.nav{min-height:72px;grid-template-columns:1fr auto}.nav-links{display:none}.brand small{display:none}.hero{padding:58px 0 64px}.hero h1,.install-hero h1{font-size:44px;line-height:1.1}.hero p{font-size:18px}.hero-card{grid-template-columns:1fr;margin-top:48px}.section{padding:66px 0}.section-head h2{font-size:32px}.cards.three,.flow-grid,.form-grid,.health-grid,.content-grid.two,.chapter-grid{grid-template-columns:1fr}.field-full{grid-column:auto}.credit-card{grid-template-columns:1fr}.credit-eq{transform:rotate(90deg)}.admin-shell{grid-template-columns:1fr}.sidebar{position:fixed;inset:0 auto 0 0;width:min(86vw,var(--sidebar));z-index:80;transform:translateX(-105%);transition:.2s;box-shadow:var(--shadow)}.sidebar.open{transform:translateX(0)}.mobile-only{display:grid}.admin-topbar{height:auto;min-height:74px;padding:10px 16px}.admin-topbar-title span{display:none}.admin-user>span{display:none}.admin-content{padding:24px 16px 60px}.page-head{display:grid}.page-head h1{font-size:34px}.metric-grid{grid-template-columns:1fr 1fr}.install-wrap{width:min(calc(100% - 28px),1180px);padding-top:36px}.panel,.auth-card{padding:22px}} 
@media(max-width:520px){.metric-grid{grid-template-columns:1fr}.hero h1,.install-hero h1{font-size:40px}.section-head h2{font-size:30px}.page-head h1{font-size:32px}.credit-card strong{font-size:34px}}

/* v0.2.x — Identity, Student Shell, RBAC & Settings */
.nav-actions{gap:10px;align-items:center}.public-menu-btn{display:none}.public-mobile-nav{display:none;border-top:1px solid var(--border);background:#fff}.public-mobile-nav.open{display:block}.public-mobile-nav .container{padding:12px 0 18px;display:grid;gap:4px}.public-mobile-nav a{padding:12px 4px;font-size:16px;font-family:Poppins,Inter,sans-serif;font-weight:600}.site-footer{border-top:1px solid var(--border);padding:44px 0;background:#fff}.footer-grid-simple{display:flex;justify-content:space-between;gap:40px;align-items:flex-start}.footer-grid-simple strong{font-family:Poppins,Inter,sans-serif;font-size:22px}.footer-grid-simple p{max-width:620px;color:var(--muted);font-size:16px;margin:10px 0 0}.footer-links{display:flex;gap:24px;flex-wrap:wrap}.footer-links a{font-size:16px;color:var(--muted)}.footer-links a:hover{color:var(--blue)}
.auth-card-wide{width:min(100%,600px)}.btn-google-live{min-height:56px;display:flex;flex-direction:row;background:#fff;color:var(--text);border-color:var(--border);width:100%}.btn-google-live:hover{background:var(--soft)}.google-mark,.mail-mark,.provider-icon{width:36px;height:36px;border-radius:50%;display:inline-grid;place-items:center;border:1px solid var(--border);background:#fff;font-family:Poppins,Inter,sans-serif;font-size:18px;font-weight:700}.auth-switch{margin:24px 0 0!important;text-align:center;font-size:16px!important}.auth-switch a,.check-control a,.text-link{color:var(--blue);font-weight:600}.check-control{display:flex;align-items:flex-start;gap:12px;font-size:16px;line-height:1.5}.check-control input{width:20px;height:20px;margin:3px 0 0;flex:0 0 auto}.check-control>span{min-width:0}.check-control small{display:block;color:var(--muted);font-size:16px;font-weight:400;margin-top:3px}.field-label{font-family:Poppins,Inter,sans-serif;font-size:16px;font-weight:600}.soft-rule{border:0;border-top:1px solid var(--border);margin:28px 0}.form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.side-nav a.active{background:var(--soft-blue);color:var(--blue);font-weight:700}.toolbar-form{display:flex;align-items:end;gap:12px;margin-bottom:22px;flex-wrap:wrap}.search-field{min-width:min(100%,420px);flex:1}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:14px}.data-table{width:100%;border-collapse:collapse;background:#fff;min-width:820px}.data-table th,.data-table td{text-align:left;padding:16px 18px;border-bottom:1px solid var(--border);font-size:16px;vertical-align:middle}.data-table th{font-family:Poppins,Inter,sans-serif;font-weight:600;background:var(--soft)}.data-table tbody tr:last-child td{border-bottom:0}.data-table td:first-child{display:grid;gap:3px}.data-table td:first-child span{color:var(--muted)}.empty-state{padding:22px;display:grid;gap:4px;color:var(--muted)}.empty-state strong{color:var(--text);font-family:Poppins,Inter,sans-serif}.profile-card{padding:28px}.profile-card h2,.settings-card h2,.rbac-card h2{font-family:Poppins,Inter,sans-serif;font-size:24px;margin:0 0 20px}.detail-list{margin:0 0 24px;display:grid}.detail-list>div{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:13px 0;border-bottom:1px solid var(--border)}.detail-list dt{color:var(--muted);font-size:16px}.detail-list dd{margin:0;font-size:16px;font-weight:600}.wallet-summary{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px}.wallet-summary>div{background:var(--soft);border:1px solid var(--border);border-radius:14px;padding:18px;display:grid;gap:4px}.wallet-summary span{font-size:16px;color:var(--muted)}.wallet-summary strong{font-family:Poppins,Inter,sans-serif;font-size:28px}.provider-row{min-height:70px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;font-size:16px}.provider-row:last-child{border-bottom:0}.provider-row>div{display:flex;align-items:center;gap:12px}.provider-row>div>span:last-child{display:grid;gap:2px}.provider-row small{font-size:16px;color:var(--muted)}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.rbac-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.rbac-card{padding:26px}.permission-list{display:grid;gap:8px;margin-bottom:20px}.permission-row{padding:12px;border:1px solid var(--border);border-radius:12px;background:var(--soft)}.settings-stack{display:grid;gap:22px}.settings-card{padding:28px}.integration-note{background:var(--soft-blue);border:1px solid #b8d2ff;border-radius:14px;padding:18px;margin-bottom:22px;display:grid;gap:8px}.integration-note strong,.integration-note span{font-size:16px}.integration-note code{font-size:16px;word-break:break-all;background:#fff;border:1px solid var(--border);padding:10px 12px;border-radius:10px}.toggle-control{display:flex!important;align-items:center;gap:12px!important}.toggle-control input{width:22px!important;height:22px;min-height:0!important}.toggle-control span{font-size:16px;font-family:Poppins,Inter,sans-serif;font-weight:600}
.student-body{background:var(--soft)}.student-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.student-sidebar{position:sticky;top:0;height:100vh;background:#fff;border-right:1px solid var(--border);padding:24px 18px;overflow:auto}.student-main{min-width:0}.student-topbar{height:76px;position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px}.student-brand-mobile{font-family:Poppins,Inter,sans-serif;font-size:20px;font-weight:700}.student-user{display:flex;align-items:center;gap:14px;font-size:16px}.avatar{width:44px;height:44px;border-radius:50%;background:var(--soft-blue);border:1px solid #bfd5ff;color:var(--blue);display:grid;place-items:center;font-family:Poppins,Inter,sans-serif;font-weight:700}.student-content{max-width:1460px;margin:auto;padding:34px 30px 90px}.student-page{min-width:0}.student-welcome{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:28px}.student-welcome h1{font-family:Poppins,Inter,sans-serif;font-size:40px;line-height:1.2;letter-spacing:-.035em;margin:8px 0}.student-welcome p{font-size:18px;color:var(--muted);margin:0}.student-metrics{margin-bottom:22px}.dashboard-panel{padding:28px}.dashboard-panel>.panel-head{margin-bottom:16px}.module-launch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.mini-module{background:var(--soft);border:1px solid var(--border);border-radius:14px;padding:18px;display:grid;gap:4px}.mini-module strong{font-family:Poppins,Inter,sans-serif;font-size:18px}.mini-module span,.mini-module b{font-size:16px}.mini-module span{color:var(--muted)}.mini-module b{color:var(--blue)}.info-strip{margin-top:22px;background:var(--soft-blue);border:1px solid #b8d2ff;border-radius:14px;padding:18px;display:grid;gap:4px}.info-strip strong{font-family:Poppins,Inter,sans-serif;font-size:24px}.info-strip span{font-size:16px;color:var(--muted)}.student-bottom-nav{display:none}.compact-head{margin-top:14px}.compact-head h1{max-width:850px}.onboarding-page{max-width:980px;margin:auto}.onboarding-card{padding:30px}.subject-choice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.subject-choice{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--border);border-radius:14px;padding:16px;background:#fff}.subject-choice input{width:20px;height:20px;margin:3px 0 0}.subject-choice>span{display:grid;gap:2px}.subject-choice strong{font-family:Poppins,Inter,sans-serif;font-size:17px}.subject-choice small{font-size:16px;color:var(--muted)}
.legal-page{padding:64px 0 92px;background:var(--soft)}.narrow-container{max-width:980px}.legal-head{margin:24px 0 34px}.legal-head h1{font-family:Poppins,Inter,sans-serif;font-size:48px;line-height:1.15;letter-spacing:-.04em;margin:12px 0}.legal-head p{font-size:18px;color:var(--muted);max-width:800px}.legal-stack{display:grid;gap:18px}.legal-section{padding:28px}.legal-section h2{font-family:Poppins,Inter,sans-serif;font-size:24px;margin:0 0 10px}.legal-section p{font-size:17px;color:var(--muted);margin:0}
@media(max-width:1100px){.rbac-grid{grid-template-columns:1fr}.student-shell{grid-template-columns:230px 1fr}.module-launch-grid{grid-template-columns:1fr}.footer-grid-simple{display:grid}}
@media(max-width:820px){.nav{grid-template-columns:1fr auto}.nav-links,.nav-login{display:none}.public-menu-btn{display:grid}.public-mobile-nav.open{display:block}.student-shell{grid-template-columns:1fr}.student-sidebar{position:fixed;inset:0 auto 0 0;width:min(86vw,280px);z-index:80;transform:translateX(-105%);transition:.2s;box-shadow:var(--shadow)}.student-sidebar.open{transform:translateX(0)}.student-content{padding:24px 16px 110px}.student-topbar{padding:10px 16px}.student-user>span{display:none}.student-welcome{display:grid}.student-welcome h1{font-size:34px}.student-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--border);padding:7px 8px max(7px,env(safe-area-inset-bottom));box-shadow:0 -10px 30px rgba(17,42,85,.06)}.student-bottom-nav a{min-height:56px;display:grid;place-items:center;align-content:center;gap:2px;font-size:16px;color:var(--muted);border-radius:10px}.student-bottom-nav a span{font-size:18px;line-height:1}.student-bottom-nav a.active{background:var(--soft-blue);color:var(--blue);font-weight:700}.student-bottom-nav a.disabled{opacity:.55;pointer-events:none}.subject-choice-grid,.check-grid,.wallet-summary{grid-template-columns:1fr}.detail-list>div{grid-template-columns:1fr;gap:4px}.toolbar-form{align-items:stretch}.toolbar-form .btn{width:100%}.legal-head h1{font-size:40px}.footer-grid-simple{gap:26px}.footer-links{display:grid;gap:10px}}

/* v0.3 Publisher / Media / Resource Foundation */
.page-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}.compact-panel{padding:20px}.no-pad{padding:0}.table-flush{border:0;border-radius:var(--radius)}.row-actions{display:flex!important;gap:8px;justify-content:flex-end;white-space:nowrap}.top-gap-sm{margin-top:16px}.top-gap{margin-top:24px}.muted-copy{color:var(--muted);font-size:16px}.form-section-title{font:600 24px/1.35 Poppins,Inter,sans-serif;margin:0 0 18px}.stacked-actions{display:grid}.stacked-actions .btn{width:100%}
.publisher-intake-grid{grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr)}.premium-steps{margin:0;padding-left:26px;display:grid;gap:16px}.premium-steps li{font-size:16px;color:var(--muted);padding-left:6px}.paste-panel{max-width:1120px}.paste-panel textarea{min-height:390px;resize:vertical}.publisher-editor-form{min-width:0}.publisher-editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:24px;align-items:start}.publisher-main-column,.publisher-side-column{display:grid;gap:22px;min-width:0}.publisher-side-column{position:sticky;top:calc(var(--header) + 18px)}.editor-card,.editor-side-card{padding:24px}.title-input{font:600 24px/1.35 Poppins,Inter,sans-serif!important;min-height:62px!important}.editor-toolbar{display:flex;gap:7px;flex-wrap:wrap;padding:10px;border:1px solid var(--border);border-bottom:0;border-radius:14px 14px 0 0;background:var(--soft)}.editor-toolbar button{min-height:42px;min-width:44px;border:1px solid var(--border);border-radius:9px;background:#fff;padding:8px 11px;font-size:16px}.editor-toolbar button:hover{border-color:#a9c7ff;background:var(--soft-blue);color:var(--blue)}.rich-editor{min-height:580px;border:1px solid var(--border);border-radius:0 0 14px 14px;padding:28px;background:#fff;outline:none;font-size:17px;line-height:1.72}.rich-editor:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(10,103,244,.1)}.rich-editor h2{font:700 32px/1.25 Poppins,Inter,sans-serif;margin:34px 0 14px}.rich-editor h3{font:600 24px/1.35 Poppins,Inter,sans-serif;margin:28px 0 12px}.rich-editor p{margin:0 0 18px}.rich-editor blockquote{border-left:4px solid var(--blue);margin:24px 0;padding:12px 20px;background:var(--soft-blue);border-radius:0 12px 12px 0}.rich-editor table{width:100%;border-collapse:collapse;margin:24px 0}.rich-editor th,.rich-editor td{border:1px solid var(--border);padding:12px}.editor-foot{display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:16px;margin-top:10px}.source-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;border-bottom:1px solid var(--border)}.source-row:last-child{border-bottom:0}.source-row>div{display:grid;gap:3px;min-width:0}.source-row span{color:var(--muted);font-size:16px}.revision-list{display:grid}.revision-list>div{display:flex;justify-content:space-between;gap:15px;padding:11px 0;border-bottom:1px solid var(--border)}.revision-list>div:last-child{border-bottom:0}.revision-list span{color:var(--muted);font-size:16px}.danger-card{border-color:#f2c5c5;background:#fffafa}.social-preview{margin-top:18px;border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}.social-preview-img{aspect-ratio:1200/630;background:linear-gradient(135deg,#071b3b,#243264);display:grid;place-items:center;color:#dbeafe;font:700 20px Poppins,Inter,sans-serif;background-size:cover;background-position:center}.social-preview>div:last-child{padding:15px}.social-preview strong{font:600 18px/1.35 Poppins,Inter,sans-serif;display:block}.social-preview p{font-size:16px;color:var(--muted);margin:6px 0}.social-preview span{font-size:16px;color:var(--muted)}
.media-layout{grid-template-columns:360px minmax(0,1fr);align-items:start}.media-library-panel{min-width:0}.media-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.media-card{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}.media-thumb{aspect-ratio:4/3;background:var(--soft);overflow:hidden}.media-thumb img{width:100%;height:100%;object-fit:cover;display:block}.media-meta{padding:13px;display:grid;gap:4px}.media-meta strong{font:600 16px/1.35 Poppins,Inter,sans-serif;overflow-wrap:anywhere}.media-meta span,.media-meta small{font-size:16px;color:var(--muted)}
.resource-editor{max-width:1180px}.resource-source-choice{display:grid;grid-template-columns:1fr 1fr;gap:14px}.source-option{border:1px solid var(--border);border-radius:16px;padding:18px;display:flex;gap:12px;cursor:pointer;background:#fff}.source-option:has(input:checked){border-color:#89b4ff;background:var(--soft-blue);box-shadow:0 0 0 2px rgba(10,103,244,.08)}.source-option input{width:20px;height:20px;margin:4px 0 0}.source-option span{display:grid;gap:4px}.source-option strong{font:600 18px Poppins,Inter,sans-serif}.source-option small{font-size:16px;color:var(--muted)}
.public-page-shell{padding:54px 0 92px;background:var(--soft)}.public-page-shell>.container>.breadcrumb,.article-container>.breadcrumb{margin-bottom:26px}.public-page-head{max-width:980px;margin:0 0 42px}.public-page-head h1{font:700 48px/1.12 Poppins,Inter,sans-serif;letter-spacing:-.04em;margin:12px 0}.public-page-head p{font-size:19px;color:var(--muted);max-width:820px;margin:0}.breadcrumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:var(--muted);font-size:16px}.breadcrumb a:hover{color:var(--blue)}.article-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.compact-home-grid{margin-top:0}.article-card{border:1px solid var(--border);border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 8px 24px rgba(17,42,85,.035)}.article-thumb{display:block;aspect-ratio:1200/630;background:var(--soft);overflow:hidden}.article-thumb img{width:100%;height:100%;object-fit:cover;display:block}.article-thumb-fallback{height:100%;display:grid;place-items:center;background:linear-gradient(135deg,#071b3b,#1e3a8a);color:#fff;font:700 26px Poppins,Inter,sans-serif}.article-card-body{padding:22px}.article-meta,.resource-card-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--blue);font-size:16px;font-weight:600}.article-meta span+span:before,.resource-card-meta span+span:before{content:'•';margin-right:10px;color:#98a2b3}.article-card h2,.resource-card h2{font:600 23px/1.28 Poppins,Inter,sans-serif;margin:10px 0}.article-card p,.resource-card p{font-size:16px;color:var(--muted);margin:0 0 14px}.public-empty{max-width:900px}.article-page{padding:48px 0 94px;background:var(--soft)}.article-container{max-width:1280px}.article-header{max-width:960px;margin:0 auto 32px;text-align:center}.article-kicker{font:700 16px Poppins,Inter,sans-serif;color:var(--blue);text-transform:uppercase;letter-spacing:.08em}.article-header h1{font:700 52px/1.1 Poppins,Inter,sans-serif;letter-spacing:-.045em;margin:14px 0}.article-header>p{font-size:20px;color:var(--muted);margin:0 auto;max-width:850px}.article-header-meta{margin-top:18px;display:flex;justify-content:center;gap:10px;color:var(--muted);font-size:16px}.article-hero-image{max-width:1120px;margin:34px auto;border-radius:22px;overflow:hidden;border:1px solid var(--border);background:#fff}.article-hero-image img{width:100%;display:block;aspect-ratio:1200/630;object-fit:cover}.article-content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start;max-width:1120px;margin:auto}.article-body{padding:36px;font-size:18px;line-height:1.75}.article-body h2{font:700 32px/1.25 Poppins,Inter,sans-serif;margin:36px 0 14px}.article-body h3{font:600 24px/1.35 Poppins,Inter,sans-serif;margin:30px 0 12px}.article-body p{margin:0 0 20px}.article-body ul,.article-body ol{padding-left:28px}.article-body blockquote{background:var(--soft-blue);border-left:4px solid var(--blue);padding:18px 22px;margin:26px 0;border-radius:0 14px 14px 0}.article-body table{width:100%;border-collapse:collapse;margin:24px 0}.article-body th,.article-body td{border:1px solid var(--border);padding:13px;text-align:left}.article-side{display:grid;gap:18px;position:sticky;top:100px}.share-panel,.tag-panel,.article-cta{padding:22px}.share-panel h2,.tag-panel h2,.article-cta h2{font:600 20px/1.35 Poppins,Inter,sans-serif;margin:0 0 14px}.share-actions{display:grid;gap:8px}.share-actions a,.share-actions button{min-height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;padding:10px 12px;text-align:left;font-size:16px}.share-actions a:hover,.share-actions button:hover{background:var(--soft-blue);color:var(--blue)}.tag-list{display:flex;gap:8px;flex-wrap:wrap}.tag-list span{padding:7px 10px;border-radius:999px;background:var(--soft);font-size:16px}.article-cta p{font-size:16px;color:var(--muted)}.content-lock{padding:26px;border:1px dashed #a9c7ff;border-radius:16px;background:var(--soft-blue);text-align:center}.content-lock h2{font-size:28px!important;margin:15px 0 8px!important}.content-lock p{color:var(--muted)}
.resource-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.resource-card{padding:0;overflow:hidden}.resource-card-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#eef4ff,#dce9ff);display:grid;place-items:center;overflow:hidden}.resource-card-thumb img{width:100%;height:100%;object-fit:cover}.resource-card-thumb>span{font:800 34px Poppins,Inter,sans-serif;color:var(--blue)}.resource-card-body{padding:22px}.narrow-resource-container{max-width:1080px}.resource-detail{padding:34px}.resource-detail-head{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:start}.resource-detail-thumb{width:210px;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid var(--border)}.resource-detail h1{font:700 42px/1.18 Poppins,Inter,sans-serif;letter-spacing:-.035em;margin:12px 0}.resource-detail p{font-size:18px;color:var(--muted)}.resource-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.resource-facts>div{border:1px solid var(--border);background:var(--soft);border-radius:14px;padding:16px;display:grid;gap:4px}.resource-facts span{font-size:16px;color:var(--muted)}.resource-facts strong{font:600 17px Poppins,Inter,sans-serif;overflow-wrap:anywhere}.source-credit{border-top:1px solid var(--border);padding-top:22px}.source-credit p{font-size:16px}.resource-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.update-status-card{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:start}.update-status-meta{display:grid;gap:8px}.update-status-meta code{font-size:16px;background:var(--soft);padding:8px 10px;border-radius:9px;overflow-wrap:anywhere}.auto-badge{background:#e9f7f1;color:var(--green);border-radius:999px;padding:8px 12px;font-size:16px;font-weight:700}.auto-badge.problem{background:#fff0f0;color:var(--red)}
@media(max-width:1180px){.publisher-editor-layout{grid-template-columns:1fr}.publisher-side-column{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}.media-layout{grid-template-columns:1fr}.article-card-grid,.resource-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-content-layout{grid-template-columns:1fr}.article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.page-actions{width:100%;justify-content:stretch}.page-actions .btn{flex:1}.publisher-intake-grid,.publisher-side-column,.article-card-grid,.resource-card-grid,.article-side,.resource-source-choice,.resource-facts{grid-template-columns:1fr}.rich-editor{min-height:430px;padding:20px}.editor-foot{display:grid}.media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.public-page-head h1{font-size:38px}.article-header h1{font-size:40px}.article-header>p{font-size:18px}.article-body{padding:24px;font-size:17px}.article-body h2{font-size:28px}.resource-detail-head{grid-template-columns:1fr}.resource-detail-thumb{width:100%;max-width:360px}.resource-detail h1{font-size:34px}.update-status-card{grid-template-columns:1fr}}
@media(max-width:520px){.media-grid{grid-template-columns:1fr}.editor-toolbar button{flex:1}.article-header h1{font-size:36px}.public-page-head h1{font-size:34px}}
/* TREND ENGINE v0.4 */
.trend-filter{margin-bottom:22px}.trend-filter .form-grid{grid-template-columns:minmax(240px,1fr) minmax(220px,.7fr)}.trend-metrics{margin-bottom:24px}.trend-overview-card{margin-top:0}.trend-state-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.trend-state-card{border:1px solid var(--border);border-radius:16px;background:#fff;padding:22px;display:grid;gap:17px}.trend-state-card h3{font:600 24px/1.25 Poppins,Inter,sans-serif;margin:4px 0 0}.trend-state-stats{display:flex;gap:18px;flex-wrap:wrap}.trend-state-stats span{font-size:16px;color:var(--muted);display:grid;gap:2px}.trend-state-stats strong{font:700 22px Poppins,Inter,sans-serif;color:var(--text)}.panel-title-row{padding:22px 26px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:18px}.panel-title-row>div{display:flex;align-items:center;gap:12px}.panel-title-row h2{font:600 22px Poppins,Inter,sans-serif;margin:0}.trend-editor-grid{grid-template-columns:minmax(0,1.15fr) minmax(380px,.85fr);align-items:start}.code-sample{font:500 16px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace;background:#0f172a;color:#dbeafe;border-radius:12px;padding:14px 16px;overflow-wrap:anywhere;margin:12px 0 18px}.trend-year-block{margin:0 0 48px}.trend-year-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:20px}.trend-year-head h2{font:700 32px/1.2 Poppins,Inter,sans-serif;margin:7px 0 0}.public-trend-grid .trend-state-card{box-shadow:0 8px 24px rgba(17,42,85,.035)}.trend-disclaimer{margin-top:28px;border:1px solid #d7e4fb;background:#f5f8ff;border-radius:16px;padding:20px 22px}.trend-disclaimer strong{font:600 18px Poppins,Inter,sans-serif}.trend-disclaimer p{font-size:16px;color:var(--muted);margin:6px 0 0}.trend-hero{display:grid;grid-template-columns:minmax(0,1fr) 220px;align-items:center;gap:30px;padding:34px;margin-bottom:46px}.trend-hero.member{grid-template-columns:minmax(0,1fr) auto}.trend-hero h1{font:700 48px/1.12 Poppins,Inter,sans-serif;letter-spacing:-.04em;margin:12px 0}.trend-hero p{font-size:19px;color:var(--muted);max-width:880px;margin:0}.trend-hero-metric{min-height:150px;border-radius:18px;background:linear-gradient(135deg,#071b3b,#1e3a8a);color:#fff;display:grid;place-items:center;text-align:center;padding:20px}.trend-hero-metric span{font-size:16px;color:#dbeafe}.trend-hero-metric strong{display:block;font:800 52px Poppins,Inter,sans-serif}.trend-section-head{margin-bottom:30px}.trend-focus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:34px}.trend-focus-card{border:1px solid var(--border);border-radius:18px;background:#fff;padding:24px;box-shadow:0 8px 24px rgba(17,42,85,.035)}.trend-focus-card.high{border-color:#f2c879;background:#fffaf0}.trend-focus-card.medium{border-color:#acc9ff;background:#f8fbff}.trend-focus-top{display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--muted);font-size:16px}.focus-badge{display:inline-flex;align-items:center;border-radius:999px;padding:7px 11px;font-size:16px;font-weight:700}.focus-badge.high{background:#fff0d1;color:#8a5a00}.focus-badge.medium{background:#eaf2ff;color:#0758d1}.focus-badge.coverage{background:#f0f2f6;color:#667085}.trend-focus-card h3{font:600 23px/1.3 Poppins,Inter,sans-serif;margin:18px 0}.trend-focus-facts{display:flex;gap:22px}.trend-focus-facts span{font-size:16px;color:var(--muted);display:grid}.trend-focus-facts strong{font:700 22px Poppins,Inter,sans-serif;color:var(--text)}.trend-member-gate{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;padding:30px;background:linear-gradient(135deg,#f4f8ff,#fff)}.trend-member-gate h2,.trend-next-action h2{font:700 30px/1.25 Poppins,Inter,sans-serif;margin:8px 0}.trend-member-gate p,.trend-next-action p{font-size:17px;color:var(--muted);margin:0}.trend-analysis-summary{align-items:stretch;margin-bottom:24px}.trend-bars{display:grid;gap:10px}.trend-bar-row{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px solid var(--border);font-size:16px}.trend-bar-row:last-child{border-bottom:0}.trend-bar-row strong{font-family:Poppins,Inter,sans-serif}.trend-full-table .data-table td:first-child{min-width:330px}.trend-next-action{margin-top:24px;padding:30px}.active-module{border-color:#9ec2ff!important;background:var(--soft-blue)!important}.active-module b{color:var(--blue)!important}
@media(max-width:1180px){.trend-state-grid,.trend-focus-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.trend-editor-grid{grid-template-columns:1fr}.trend-member-gate{grid-template-columns:1fr}.trend-hero{grid-template-columns:1fr}.trend-hero-metric{min-height:120px}}
@media(max-width:820px){.trend-filter .form-grid,.trend-state-grid,.trend-focus-grid{grid-template-columns:1fr}.trend-year-head{align-items:flex-start;flex-direction:column}.trend-hero h1{font-size:38px}.trend-member-gate h2,.trend-next-action h2{font-size:27px}.trend-hero{padding:24px}.panel-title-row{align-items:flex-start;flex-direction:column}.trend-state-stats{justify-content:space-between}.trend-full-table .data-table td:first-child{min-width:280px}}

/* LEARNING + PRACTICE v0.5 */
.learning-editor-form{align-items:start}.learning-editor-form .span-2,.question-editor-form .span-2,.content-grid>.span-2{grid-column:1/-1}.lesson-section-stack{display:grid;gap:18px;margin-top:20px}.lesson-section-editor{padding:22px;border:1px solid var(--border);border-radius:16px;background:var(--soft)}.lesson-section-editor textarea{font-family:Inter,system-ui,sans-serif}.checkbox-list.compact{max-height:430px;overflow:auto;padding-right:5px}.checkbox-list.compact label,.question-pick-list label{display:flex;gap:12px;align-items:flex-start;padding:13px;border:1px solid var(--border);border-radius:12px;margin-bottom:9px;background:#fff}.checkbox-list.compact input,.question-pick-list input{margin-top:5px;width:18px;height:18px}.checkbox-list.compact span,.question-pick-list span{display:grid;gap:3px}.checkbox-list.compact small,.question-pick-list small{font-size:16px;color:var(--muted)}.question-pick-list{max-height:760px;overflow:auto;padding-right:4px}.question-pick-list em{font-style:normal;font-size:16px;color:var(--text);line-height:1.45}.objective-options{margin-top:22px;padding-top:20px;border-top:1px solid var(--border)}.objective-options h3{font:600 20px/1.3 Poppins,Inter,sans-serif;margin:0 0 14px}.option-editor{display:grid;grid-template-columns:58px 1fr;gap:10px;align-items:center;margin-bottom:10px}.option-key{display:flex;align-items:center;gap:8px;font:700 18px Poppins,Inter,sans-serif}.option-key input{width:18px;height:18px}.learning-subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.learning-subject-card{display:grid;gap:20px;color:inherit}.learning-subject-card h2{font:700 30px/1.2 Poppins,Inter,sans-serif;margin:12px 0 6px}.learning-subject-card p{font-size:17px;color:var(--muted);margin:0}.progress-track{height:10px;border-radius:999px;background:#e8edf5;overflow:hidden}.progress-track span,.progress-track b{display:block;height:100%;border-radius:inherit;background:var(--blue)}.learning-form-block{margin:44px 0}.section-inline-head h2{font:700 32px/1.2 Poppins,Inter,sans-serif;margin:7px 0 18px}.chapter-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.chapter-card{border:1px solid var(--border);border-radius:18px;background:#fff;padding:22px;display:grid;gap:13px;box-shadow:0 8px 24px rgba(17,42,85,.035)}.chapter-card>span{font-size:16px;font-weight:700;color:var(--blue)}.chapter-card h3{font:600 22px/1.35 Poppins,Inter,sans-serif;margin:0}.chapter-card small{font-size:16px;color:var(--muted)}.subtopic-learning-list{display:grid;gap:14px}.subtopic-learning-card{display:flex;align-items:center;justify-content:space-between;gap:22px}.subtopic-learning-card h2{font:600 22px/1.35 Poppins,Inter,sans-serif;margin:8px 0}.subtopic-code{font-size:16px;font-weight:800;color:var(--blue)}.subtopic-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:16px;color:var(--muted)}.lesson-reader{max-width:1060px;margin:0 auto}.lesson-reader-head{padding:26px 0 12px}.lesson-reader-head h1{font:700 44px/1.16 Poppins,Inter,sans-serif;letter-spacing:-.035em;margin:10px 0}.lesson-reader-head p{font-size:19px;color:var(--muted)}.lesson-content-stack{display:grid;gap:20px;margin:24px 0}.lesson-content-section{padding:32px}.lesson-content-section h2{font:700 28px/1.25 Poppins,Inter,sans-serif;margin:12px 0 18px}.section-type-badge,.practice-type{display:inline-flex;border-radius:999px;padding:7px 11px;background:var(--soft-blue);color:var(--blue);font-size:16px;font-weight:800}.lesson-rich-content{font-size:18px;line-height:1.75}.lesson-rich-content p{margin:0 0 18px}.lesson-rich-content ul,.lesson-rich-content ol{padding-left:28px}.lesson-resource-panel h2,.lesson-finish h2{font:700 26px/1.3 Poppins,Inter,sans-serif;margin:0 0 16px}.resource-links{display:grid;gap:10px}.resource-links a{display:flex;justify-content:space-between;gap:20px;padding:14px;border:1px solid var(--border);border-radius:12px}.resource-links span{font-size:16px;color:var(--muted)}.lesson-finish{display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;margin-top:24px}.lesson-finish p{font-size:17px;color:var(--muted);margin:6px 0 0}.practice-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.practice-card{display:grid;gap:18px}.practice-card.focus_trend{border-color:#f0c777;background:#fffaf2}.practice-card.chapter_test{border-color:#a6c5ff;background:#f8fbff}.practice-card-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.practice-card h2{font:700 24px/1.3 Poppins,Inter,sans-serif;margin:0}.practice-card>p{font-size:16px;color:var(--muted);margin:0}.practice-facts{display:flex;gap:20px;flex-wrap:wrap}.practice-facts span{display:grid;font-size:16px;color:var(--muted)}.practice-facts strong{font:700 21px Poppins,Inter,sans-serif;color:var(--text)}.practice-facts.large strong{font-size:25px}.practice-intro{display:grid;grid-template-columns:1fr 280px;gap:34px;align-items:start}.practice-intro h1{font:700 42px/1.18 Poppins,Inter,sans-serif;margin:14px 0}.practice-intro>div>p{font-size:18px;color:var(--muted);line-height:1.6}.practice-intro aside{display:grid;gap:16px;justify-items:stretch}.premium-lock{border:1px solid #efcf92;background:#fff9ed;border-radius:14px;padding:18px}.premium-lock p{font-size:16px;color:var(--muted)}.question-summary-list{display:grid;gap:8px}.question-summary-list>div{display:grid;grid-template-columns:42px 120px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);font-size:16px}.question-summary-list>div>span{width:34px;height:34px;border-radius:50%;background:var(--soft-blue);display:grid;place-items:center;font-weight:700;color:var(--blue)}.question-summary-list em{font-style:normal;color:var(--muted)}.practice-topbar{display:flex;justify-content:space-between;align-items:center;gap:22px;margin-bottom:20px}.practice-topbar h1{font:700 27px/1.25 Poppins,Inter,sans-serif;margin:5px 0}.practice-timer{min-width:150px;text-align:right}.practice-timer span{font-size:16px;color:var(--muted)}.practice-timer strong{display:block;font:800 30px Poppins,Inter,sans-serif}.practice-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:20px;align-items:start}.question-nav{position:sticky;top:96px}.question-nav>div:first-child{display:grid;margin-bottom:18px}.question-nav>div:first-child strong{font:700 24px Poppins,Inter,sans-serif}.question-nav>div:first-child span{font-size:16px;color:var(--muted)}.question-nav-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.question-nav-grid a{aspect-ratio:1;border:1px solid var(--border);border-radius:9px;display:grid;place-items:center;font-size:16px;font-weight:700;background:#fff}.question-nav-grid a.answered{background:#eaf7f1;border-color:#aad9c6;color:#0d7650}.question-nav-grid a.active{outline:2px solid var(--blue);outline-offset:1px}.question-stage{padding:30px}.question-stage-head{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:16px;padding-bottom:18px;border-bottom:1px solid var(--border)}.question-text{font:500 20px/1.65 Inter,system-ui,sans-serif;margin:28px 0}.answer-options{display:grid;gap:12px}.answer-options label{cursor:pointer}.answer-options input{position:absolute;opacity:0;pointer-events:none}.answer-options span{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;border:1px solid var(--border);border-radius:14px;padding:15px 18px;font-size:17px}.answer-options b{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--soft-blue);color:var(--blue)}.answer-options input:checked+span{border-color:#7baeff;background:#f4f8ff;box-shadow:0 0 0 2px rgba(10,103,244,.08)}.subjective-answer textarea{min-height:220px}.practice-actions{display:flex;align-items:center;gap:12px;margin-top:26px}.practice-actions .grow{flex:1}.result-hero{display:grid;grid-template-columns:1fr 260px;gap:30px;align-items:center}.result-hero h1{font:700 38px/1.2 Poppins,Inter,sans-serif;margin:10px 0}.result-hero p{font-size:17px;color:var(--muted);max-width:780px}.result-score{border-radius:18px;background:linear-gradient(135deg,#071b3b,#1e3a8a);color:#fff;padding:26px;text-align:center}.result-score span,.result-score small{display:block;font-size:16px;color:#dbeafe}.result-score strong{display:block;font:800 56px Poppins,Inter,sans-serif}.result-review-list{display:grid;gap:18px;margin:24px 0}.result-question{border-left:5px solid var(--border)}.result-question.correct{border-left-color:#2f9e72}.result-question.wrong{border-left-color:#d64545}.result-question.subjective{border-left-color:#d19a2f}.result-question-head{display:flex;gap:12px;align-items:center;font-size:16px}.result-question-head b{margin-left:auto}.answer-review,.scheme-box{margin-top:18px;padding:18px;border-radius:14px;background:var(--soft)}.answer-review p{font-size:16px}.student-answer-box{white-space:pre-wrap;font-size:17px;line-height:1.6}.scheme-box h3{font:600 20px Poppins,Inter,sans-serif;margin:0 0 12px}.scheme-box p,.scheme-box li,.scheme-explanation{font-size:16px;line-height:1.6}.learning-flow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0}.learning-flow span{padding:10px 13px;border-radius:10px;background:var(--soft-blue);font-weight:700;color:var(--blue);font-size:16px}.learning-flow b{color:var(--muted)}
@media(max-width:1180px){.chapter-card-grid,.practice-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.practice-layout{grid-template-columns:190px minmax(0,1fr)}.question-nav-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:820px){.learning-subject-grid,.chapter-card-grid,.practice-card-grid{grid-template-columns:1fr}.subtopic-learning-card,.lesson-finish,.practice-topbar{align-items:flex-start;flex-direction:column}.lesson-finish{display:flex}.lesson-reader-head h1{font-size:36px}.lesson-content-section{padding:24px}.practice-intro,.practice-layout,.result-hero{grid-template-columns:1fr}.question-nav{position:static}.question-nav-grid{grid-template-columns:repeat(8,1fr)}.practice-intro h1{font-size:34px}.result-hero h1{font-size:32px}.result-score{max-width:300px}.question-summary-list>div{grid-template-columns:38px 100px 1fr}.question-summary-list b{grid-column:3}.question-stage{padding:22px}.question-text{font-size:19px}.practice-actions{flex-wrap:wrap}.practice-actions .grow{display:none}.practice-actions .btn{flex:1}.option-editor{grid-template-columns:52px 1fr}}
@media(max-width:520px){.question-nav-grid{grid-template-columns:repeat(5,1fr)}.practice-topbar h1{font-size:24px}.result-score strong{font-size:48px}}