:root{--navy:#071b55;--blue:#1d5fd1;--blue2:#2b73e8;--gold:#f0bb35;--purple:#6d42cc;--ink:#172554;--muted:#667085;--line:#dbe5f1;--bg:#f3f7fd;--ok:#18794e;--danger:#b42318;--warn:#9a6700;--shadow:0 16px 40px rgba(17,40,86,.10)}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:linear-gradient(180deg,#f4f8ff,#fff 50%,#f4f7fc);min-height:100vh}a{color:inherit}button,input,select,textarea{font:inherit}.portal-body{padding-bottom:36px}.top-shell{position:sticky;top:0;z-index:50;height:78px;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:24px;padding:10px clamp(16px,3vw,40px);box-shadow:0 5px 20px rgba(7,27,85,.05)}.brand-lockup{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:190px}.brand-lockup img{width:50px;height:50px;border-radius:14px;object-fit:cover}.brand-lockup span{display:grid;line-height:1.05}.brand-lockup strong{font-size:15px;letter-spacing:1.4px;color:var(--navy)}.brand-lockup small{font-size:10px;color:#b17a00;font-weight:800;letter-spacing:1.5px;margin-top:5px}.desktop-nav{display:flex;gap:3px;align-items:center;flex:1;justify-content:center}.desktop-nav a{padding:10px 12px;border-radius:10px;text-decoration:none;color:#46546d;font-weight:750;font-size:13px}.desktop-nav a:hover,.desktop-nav a.active{background:#eef4ff;color:var(--blue)}.student-chip{display:flex;align-items:center;gap:9px}.student-avatar{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--navy),var(--blue2));display:grid;place-items:center;color:white;font-weight:900}.student-chip>span:nth-child(2){display:grid;max-width:150px}.student-chip strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.student-chip small{font-size:10px;color:var(--muted);margin-top:2px}.student-chip>a{font-size:11px;font-weight:800;color:var(--blue);text-decoration:none}.page{width:min(1220px,calc(100% - 28px));margin:28px auto}.hero-card{position:relative;overflow:hidden;border-radius:28px;padding:clamp(24px,4vw,42px);background:radial-gradient(circle at 92% 10%,rgba(255,255,255,.18),transparent 23%),linear-gradient(125deg,#071b55 0%,#1a5dcc 54%,#7245c8 100%);color:white;box-shadow:0 24px 60px rgba(31,76,161,.23)}.hero-card:after{content:"";position:absolute;right:-80px;bottom:-110px;width:300px;height:300px;border-radius:50%;border:50px solid rgba(255,255,255,.08)}.hero-card h1{margin:7px 0 9px;font-size:clamp(28px,5vw,44px);letter-spacing:-1.2px}.hero-card p{max-width:740px;color:#e8efff;line-height:1.65;margin:0}.eyebrow{font-size:11px;font-weight:900;letter-spacing:2px;color:#2e5da8;text-transform:uppercase}.eyebrow.light{color:#dbe8ff}.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.hero-meta span{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);font-size:12px;font-weight:750}.grid{display:grid;gap:18px}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin:22px 0}.stat-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 10px 26px rgba(35,63,108,.06)}.stat-card:nth-child(2){background:linear-gradient(145deg,#fff,#effaf5)}.stat-card:nth-child(3){background:linear-gradient(145deg,#fff,#f5f1ff)}.stat-card:nth-child(4){background:linear-gradient(145deg,#fff,#fff8e8)}.stat-card small{display:block;color:var(--muted);font-weight:700}.stat-card strong{display:block;font-size:29px;margin-top:8px;color:var(--navy)}.section{background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(18px,3vw,28px);box-shadow:var(--shadow);margin:20px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:18px}.section-head h2{margin:4px 0 0;font-size:clamp(22px,3vw,28px)}.section-head p{margin:0;color:var(--muted);font-size:13px}.section-head a{font-size:12px;font-weight:850;color:var(--blue);text-decoration:none}.quick-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.quick-card{display:flex;flex-direction:column;gap:10px;min-height:140px;padding:18px;border-radius:20px;text-decoration:none;border:1px solid #ccdcf2;background:linear-gradient(145deg,#fff,#f1f7ff);transition:.2s}.quick-card:nth-child(2){background:linear-gradient(145deg,#fff,#f6f1ff);border-color:#ded2f6}.quick-card:nth-child(3){background:linear-gradient(145deg,#fff,#fff8e9);border-color:#eedaa2}.quick-card:nth-child(4){background:linear-gradient(145deg,#fff,#edf9f4);border-color:#cbeadb}.quick-card:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(29,95,209,.11)}.quick-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--purple));color:white;font-size:22px}.quick-card strong{font-size:16px}.quick-card small{color:var(--muted);line-height:1.4}.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-card{display:flex;flex-direction:column;min-height:215px;border:1px solid #cfddf0;border-top:5px solid var(--blue);border-radius:20px;padding:19px;background:linear-gradient(150deg,#fff,#f4f8ff);box-shadow:0 10px 26px rgba(29,95,209,.07)}.lesson-card:nth-child(even){border-top-color:var(--purple);background:linear-gradient(150deg,#fff,#faf5ff)}.lesson-card.compact{min-height:185px}.lesson-card-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.pill{display:inline-flex;padding:6px 9px;border-radius:999px;background:#e9f1ff;color:#225cc2;font-size:10px;font-weight:900;letter-spacing:.6px}.muted{color:var(--muted);font-size:11px}.lesson-card h3{margin:15px 0 8px;font-size:19px;line-height:1.25}.lesson-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.55}.lesson-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px;color:var(--muted);font-size:11px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:12px;padding:12px 16px;text-decoration:none;cursor:pointer;font-weight:850;font-size:13px}.btn.primary{background:linear-gradient(135deg,var(--navy),var(--blue2));color:#fff;box-shadow:0 8px 20px rgba(29,95,209,.18)}.btn.secondary{background:#eef4ff;color:var(--blue);border:1px solid #cbdcf5}.btn.gold{background:linear-gradient(135deg,#f2c346,#e6a819);color:#3a2a00}.btn.danger{background:#fff0f0;color:var(--danger);border:1px solid #fac8c6}.btn.small{padding:9px 12px;border-radius:10px;font-size:11px}.btn.wide{width:100%;min-height:52px}.two-col{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.7fr);gap:20px}.current-lesson{border-radius:22px;padding:24px;background:linear-gradient(135deg,#edf4ff,#fff);border:1px solid #cbdcf5}.current-lesson h2{font-size:27px;margin:9px 0}.current-lesson p{color:var(--muted);line-height:1.6}.current-lesson-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}.lecture-list{display:grid;gap:11px}.lecture-item{display:grid;grid-template-columns:62px 1fr auto;gap:13px;align-items:center;padding:13px;border:1px solid var(--line);border-radius:16px;background:#fbfdff}.date-box{width:62px;height:62px;border-radius:15px;background:#eef4ff;display:grid;place-items:center;text-align:center;color:var(--blue);font-weight:900}.date-box small{display:block;font-size:9px;letter-spacing:1px}.lecture-item h4{margin:0 0 4px;font-size:14px}.lecture-item p{margin:0;color:var(--muted);font-size:11px;line-height:1.45}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-card{padding:22px;border-radius:21px;border:1px solid var(--line);background:#fff;box-shadow:0 10px 25px rgba(30,55,90,.06)}.course-card h3{margin:9px 0 8px}.course-card p{color:var(--muted);font-size:13px;line-height:1.5}.course-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}.course-meta span{background:#f2f5fa;border-radius:9px;padding:7px 9px;font-size:11px;color:#536176}.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.filter-bar input,.filter-bar select{min-height:44px;border:1px solid #ccd8e8;border-radius:12px;padding:10px 12px;background:#fff;color:var(--ink)}.filter-bar input{flex:1;min-width:220px}.empty-state{text-align:center;padding:45px 20px;border:1px dashed #cbd8ea;border-radius:20px;background:#fbfdff}.empty-icon{font-size:40px}.empty-state h2{margin:12px 0 8px}.empty-state p{max-width:550px;margin:0 auto 18px;color:var(--muted);line-height:1.6}.flash,.alert{width:min(960px,calc(100% - 28px));margin:14px auto;padding:12px 15px;border-radius:12px;font-weight:700;font-size:13px}.alert{width:auto;margin:12px 0}.success{background:#eaf8ef;color:#17683b;border:1px solid #bce3ca}.error{background:#fff0ef;color:#9e2f25;border:1px solid #f3c3bf}.warning{background:#fff7dc;color:#7f5a00;border:1px solid #f0daa0}.profile-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.info-row{display:grid;grid-template-columns:160px 1fr;gap:14px;padding:12px 0;border-bottom:1px solid #edf0f4}.info-row:last-child{border-bottom:0}.info-row span{color:var(--muted);font-size:12px}.info-row strong{font-size:13px;word-break:break-word}.progress-bar{height:12px;background:#edf1f7;border-radius:999px;overflow:hidden}.progress-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--purple));border-radius:inherit}.read-history{display:grid;gap:10px}.history-row{display:flex;gap:13px;justify-content:space-between;padding:13px 0;border-bottom:1px solid #eef1f5}.history-row:last-child{border-bottom:0}.history-row h4{margin:0 0 4px;font-size:13px}.history-row small{color:var(--muted)}.test-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.test-card{border:1px solid var(--line);border-radius:20px;padding:19px;background:#fff;box-shadow:0 9px 24px rgba(25,50,90,.05)}.test-card h3{margin:11px 0 7px}.test-card p{color:var(--muted);font-size:12px;line-height:1.55}.test-meta{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0}.test-meta span{font-size:10px;padding:6px 8px;border-radius:8px;background:#f0f4fa}.test-run{width:min(900px,calc(100% - 28px));margin:28px auto}.test-head{padding:24px;border-radius:22px;background:linear-gradient(120deg,var(--navy),var(--blue));color:#fff}.test-head h1{margin:8px 0}.test-head p{margin:0;color:#dfe9ff}.test-timer{font-variant-numeric:tabular-nums;font-weight:900;font-size:21px;padding:9px 12px;border-radius:12px;background:rgba(255,255,255,.14)}.test-timer.urgent{background:#a83932}.question{margin:16px 0;padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff}.question legend{font-weight:850;padding:0 6px}.option{display:flex;align-items:flex-start;gap:9px;padding:9px 10px;border-radius:10px;margin:5px 0}.option:hover{background:#f5f8fd}.option input{margin-top:3px}.result-card{padding:27px;border-radius:22px;background:linear-gradient(145deg,#fff,#f1f7ff);border:1px solid #cbdcf5;text-align:center}.result-score{font-size:48px;font-weight:950;color:var(--blue);margin:10px 0}.reader-page{width:min(980px,calc(100% - 24px));margin:24px auto 80px}.reader-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.reader-header{padding:27px;border-radius:24px;background:linear-gradient(125deg,#071b55,#235fc8 60%,#7042c2);color:#fff}.reader-header h1{font-size:clamp(27px,5vw,40px);margin:9px 0}.reader-header p{margin:0;color:#dfe9ff}.reader-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}.reader-meta span{font-size:11px;padding:7px 9px;background:rgba(255,255,255,.13);border-radius:9px}.reader-panel{position:sticky;top:90px;z-index:30;margin:15px 0;padding:15px;border-radius:18px;background:#fff;border:1px solid #cbdcf5;box-shadow:0 14px 34px rgba(21,55,105,.13)}.reader-controls{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.reader-controls button{border:1px solid #cbd8ec;background:#f7f9fd;color:var(--navy);border-radius:10px;padding:9px 11px;font-weight:850;cursor:pointer}.reader-controls button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.reader-settings{display:flex;gap:8px;flex:1;justify-content:flex-end}.reader-settings select{max-width:220px;border:1px solid #cbd8ec;border-radius:9px;padding:8px;background:#fff}.reader-focus{margin-top:12px;padding:12px 14px;border-radius:12px;background:#eff5ff;color:#24416f;line-height:1.55}.reader-count{font-size:10px;color:var(--muted);margin-top:5px}.lesson-content{background:#fff;border:1px solid var(--line);border-radius:22px;padding:clamp(22px,4vw,40px);box-shadow:var(--shadow);font-family:Georgia,"Times New Roman",serif;font-size:18px;line-height:1.82;color:#25334e}.lesson-content h1,.lesson-content h2,.lesson-content h3,.lesson-content h4{font-family:Inter,system-ui,sans-serif;color:var(--navy);line-height:1.25;margin-top:1.5em}.lesson-content img{max-width:100%;height:auto}.lesson-content table{width:100%;border-collapse:collapse;display:block;overflow:auto}.lesson-content td,.lesson-content th{border:1px solid #dce4ef;padding:8px}.lesson-assets{display:flex;gap:9px;flex-wrap:wrap;margin:15px 0}.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.lesson-nav a{display:flex;flex-direction:column;padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff;text-decoration:none}.lesson-nav a:last-child{text-align:right}.lesson-nav small{color:var(--muted);font-size:10px}.lesson-nav strong{font-size:13px;margin-top:5px}.mobile-nav{display:none}.login-body,.setup-body{background:linear-gradient(135deg,#061a43 0%,#0b4f91 50%,#6f43c6 100%);min-height:100vh}.login-page{min-height:100vh;display:grid;grid-template-columns:minmax(340px,520px) minmax(360px,1fr);align-items:stretch}.login-card{background:#fff;padding:clamp(28px,5vw,56px);display:flex;flex-direction:column;justify-content:center}.login-brand{display:flex;align-items:center;gap:11px;margin-bottom:26px}.login-brand img{width:57px;height:57px;border-radius:16px;object-fit:cover}.login-brand span{font-weight:950;color:var(--navy);letter-spacing:1.8px;font-size:13px}.login-heading{text-align:left}.graduate{display:inline-grid;width:58px;height:58px;place-items:center;border-radius:17px;background:linear-gradient(135deg,#eaf2ff,#f8f0ff);font-size:27px}.login-heading h1{font-size:38px;margin:14px 0 8px;color:var(--navy)}.login-heading p{color:var(--muted);line-height:1.6;max-width:440px}.login-form label,.setup-form label{display:block;font-size:12px;font-weight:850;color:#253f6a;margin:16px 0}.login-form input,.setup-form input{display:block;width:100%;margin-top:7px;min-height:51px;padding:12px 14px;border:1.5px solid #ccd7e7;border-radius:12px;outline:0;color:#152742}.login-form input:focus,.setup-form input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(29,95,209,.09)}.login-form small,.setup-form small{display:block;margin-top:6px;color:var(--muted);font-weight:500;line-height:1.4}.student-found{padding:12px 14px;border-radius:12px;background:#eaf8ef;border:1px solid #bde4ca;color:#17683b}.student-found span{display:block;font-size:12px;margin-top:3px}.login-note{font-size:11px;color:var(--muted);text-align:center;line-height:1.55;margin-top:17px}.login-links{display:flex;justify-content:space-between;gap:10px;margin-top:17px;font-size:11px}.login-links a{color:var(--blue);font-weight:750;text-decoration:none}.login-side{padding:clamp(40px,7vw,90px);display:flex;flex-direction:column;justify-content:center;color:white;position:relative;overflow:hidden}.login-side:after{content:"";position:absolute;width:500px;height:500px;border:80px solid rgba(255,255,255,.06);border-radius:50%;right:-250px;bottom:-250px}.login-side h2{font-size:clamp(38px,5vw,64px);line-height:1.03;letter-spacing:-2px;max-width:760px;margin:15px 0 30px}.feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:800px;position:relative;z-index:2}.feature-list>div{display:flex;gap:13px;padding:17px;border-radius:16px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14)}.feature-list b{color:#f5cd67}.feature-list span{display:grid}.feature-list strong{font-size:13px}.feature-list small{font-size:11px;color:#d7e3fb;margin-top:4px;line-height:1.4}.setup-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.setup-card{width:min(720px,100%);background:#fff;border-radius:26px;padding:clamp(25px,5vw,45px);box-shadow:0 30px 80px rgba(0,0,0,.25)}.setup-brand{display:flex;gap:12px;align-items:center}.setup-brand img{width:64px;height:64px;border-radius:18px;object-fit:cover}.setup-brand div{display:grid}.setup-brand strong{letter-spacing:1.5px;color:var(--navy)}.setup-brand span{color:var(--muted);font-size:12px;margin-top:4px}.setup-card h1{font-size:34px;margin:18px 0 7px}.lead{color:var(--muted);line-height:1.6}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.setup-note{margin-top:18px;padding:13px;border-radius:12px;background:#fff8e8;color:#765509;font-size:12px;line-height:1.55}.simple-state{min-height:100vh;display:grid;place-items:center;padding:22px;background:linear-gradient(135deg,#061a43,#285fc4)}.state-card{width:min(520px,100%);background:#fff;border-radius:22px;padding:32px;text-align:center}.state-card h1{color:var(--navy)}.state-card p{color:var(--muted);line-height:1.6}.setup-actions{margin-top:18px}@media(max-width:1050px){.desktop-nav{display:none}.student-chip>span:nth-child(2){display:none}.stats-grid,.quick-grid{grid-template-columns:repeat(2,1fr)}.lesson-grid,.test-grid{grid-template-columns:repeat(2,1fr)}.login-page{grid-template-columns:minmax(320px,470px) 1fr}.feature-list{grid-template-columns:1fr}.two-col{grid-template-columns:1fr}.reader-panel{top:82px}}@media(max-width:760px){body.is-authenticated{padding-bottom:82px}.top-shell{height:68px;padding:8px 14px}.brand-lockup{min-width:0;flex:1}.brand-lockup img{width:45px;height:45px}.brand-lockup strong{font-size:13px}.brand-lockup small{font-size:8px}.student-chip>a{display:none}.student-avatar{width:38px;height:38px}.page{width:min(100% - 18px,1220px);margin:14px auto}.hero-card{border-radius:21px;padding:23px 19px}.hero-card h1{font-size:30px}.stats-grid{gap:9px;margin:13px 0}.stat-card{padding:15px;border-radius:16px}.stat-card strong{font-size:23px}.section{border-radius:20px;padding:17px;margin:13px 0}.section-head{align-items:flex-start}.quick-grid,.lesson-grid,.course-grid,.test-grid,.profile-grid{grid-template-columns:1fr}.quick-card{min-height:118px}.lecture-item{grid-template-columns:55px 1fr}.lecture-item>.pill{display:none}.date-box{width:55px;height:55px}.mobile-nav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.97);border-top:1px solid var(--line);padding:7px 6px max(7px,env(safe-area-inset-bottom));box-shadow:0 -8px 25px rgba(18,40,78,.08)}.mobile-nav a{display:grid;place-items:center;gap:2px;text-decoration:none;color:#6d7788}.mobile-nav a.active{color:var(--blue)}.mobile-nav span{font-size:20px}.mobile-nav small{font-size:9px;font-weight:800}.login-page{display:block}.login-card{min-height:100vh;padding:25px 18px}.login-side{display:none}.login-heading h1{font-size:32px}.login-links{flex-direction:column;align-items:center}.form-grid{grid-template-columns:1fr}.reader-page{width:calc(100% - 14px);margin-top:10px}.reader-top{align-items:flex-start}.reader-header{border-radius:19px;padding:20px}.reader-panel{position:relative;top:auto;border-radius:15px}.reader-controls{display:grid;grid-template-columns:repeat(3,1fr)}.reader-controls button{padding:10px 6px;font-size:11px}.reader-settings{grid-column:1/-1;justify-content:stretch}.reader-settings select{max-width:none;flex:1}.lesson-content{border-radius:18px;padding:20px 16px;font-size:17px}.lesson-nav{grid-template-columns:1fr}.lesson-nav a:last-child{text-align:left}.info-row{grid-template-columns:125px 1fr}.test-run{width:calc(100% - 16px);margin:12px auto}.test-head{padding:19px;border-radius:18px}.question{padding:15px}.section-head p{display:none}}@media(max-width:420px){.stats-grid{grid-template-columns:1fr 1fr}.stat-card small{font-size:10px}.stat-card strong{font-size:20px}.hero-meta span{font-size:10px}.reader-settings{display:grid;grid-template-columns:1fr}.info-row{grid-template-columns:1fr;gap:3px}.login-card{padding:20px 14px}.login-heading h1{font-size:29px}}

/* v2.0 AI Reading: sentence focus + source block highlighting */
.reader-ai-badge{display:inline-flex;align-items:center;gap:7px;padding:7px 10px;border-radius:999px;background:#eef4ff;color:#1d55b4;font-size:10px;font-weight:900;letter-spacing:.4px}
.reader-voice-status{margin-top:9px;font-size:11px;color:#64748b;font-weight:750}
.lesson-content .reader-active-block{background:linear-gradient(90deg,#fff2a8,#fff9d8)!important;box-shadow:0 0 0 4px #fff4b8!important;border-radius:8px!important;transition:background .18s ease,box-shadow .18s ease;scroll-margin-top:110px}
.reader-focus{border-left:5px solid #f2b544!important;background:linear-gradient(135deg,#fff9dd,#f7f3ff)!important}
@media(max-width:760px){.reader-controls>button{min-height:44px}.reader-settings{grid-template-columns:1fr!important}.reader-focus{font-size:16px!important;line-height:1.65!important}}