:root{--bg:#f5f7fb;--card:#fff;--ink:#182033;--muted:#667085;--line:#e7eaf0;--accent:#5b5bd6;--accent2:#eef0ff;--ok:#17845b;--warn:#b76e00;--shadow:0 10px 30px rgba(20,28,45,.07)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif}.top{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 1120px)/2));position:sticky;top:0;z-index:20}.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:var(--ink);font-weight:800}.brand small{display:block;color:var(--muted);font-size:11px;font-weight:600}.logo{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--accent);color:#fff}.top nav{display:flex;gap:8px}.top nav a{color:var(--muted);text-decoration:none;padding:9px 12px;border-radius:10px;font-weight:650}.top nav a:hover{background:var(--accent2);color:var(--accent)}.shell{max-width:1120px;margin:0 auto;padding:28px 20px 70px}.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:800;color:var(--accent);text-transform:uppercase}.hero{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}.hero h1{font-size:34px;line-height:1.08;margin:6px 0 8px}.hero p{margin:0;color:var(--muted);max-width:700px}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow)}.span8{grid-column:span 8}.span4{grid-column:span 4}.span6{grid-column:span 6}.stat{font-size:30px;font-weight:850;margin:6px 0}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:13px;padding:12px 17px;background:var(--accent);color:#fff;text-decoration:none;font-weight:800;cursor:pointer}.btn.secondary{background:var(--accent2);color:var(--accent)}.btn.full{width:100%}.progress{height:10px;background:#eceef3;border-radius:99px;overflow:hidden}.progress>i{display:block;height:100%;background:var(--accent);border-radius:99px}.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.kpi{padding:14px;background:#fafbfe;border:1px solid var(--line);border-radius:15px}.kpi b{display:block;font-size:22px}.unit{display:flex;align-items:center;gap:13px;padding:14px 0;border-bottom:1px solid var(--line)}.unit:last-child{border-bottom:0}.pill{font-size:12px;font-weight:800;padding:5px 9px;border-radius:99px;background:var(--accent2);color:var(--accent)}.qwrap{max-width:760px;margin:0 auto}.qmeta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.question{font-size:22px;line-height:1.45;font-weight:750;margin:24px 0}.option{display:block;width:100%;text-align:left;background:#fff;border:1px solid var(--line);padding:15px 16px;border-radius:14px;margin:10px 0;font-size:16px;cursor:pointer}.option:hover{border-color:#b9b9f3;background:#fafaff}.option input{margin-right:10px}.confidence{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.confidence label{background:#fff;border:1px solid var(--line);border-radius:99px;padding:8px 11px;cursor:pointer}.notice{padding:13px 15px;border-radius:13px;background:#fff8e8;color:#7a5200;border:1px solid #f0dfb7}.result-good{color:var(--ok)}.result-warn{color:var(--warn)}.footer{text-align:center;color:var(--muted);font-size:12px;padding:24px}.topic{padding:10px 0;border-bottom:1px dashed var(--line)}.topic:last-child{border:0}@media(max-width:760px){.top{height:auto;padding:12px 16px;align-items:flex-start}.top nav{display:none}.shell{padding:20px 14px 70px}.hero{display:block}.hero h1{font-size:28px}.span8,.span4,.span6{grid-column:1/-1}.kpis{grid-template-columns:1fr 1fr}.question{font-size:19px}.card{border-radius:17px;padding:17px}}
.timerbox{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.timerbox #timer{font-size:clamp(2rem,6vw,4rem);font-weight:900;letter-spacing:.04em;min-width:260px}.planitem{margin-top:16px}.planitem h2{margin-bottom:6px}@media(max-width:640px){.timerbox #timer{min-width:100%;font-size:2.5rem}.planitem .btn{width:100%;margin-top:8px}}
.lessonlayout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}.lessonlayout main{min-width:0}.lessonlayout .card{margin-bottom:16px}.sticky{position:sticky;top:92px}.bigclock{font-size:2.35rem;font-weight:900;letter-spacing:.04em;margin:10px 0}.sticky .btn{margin-top:10px}.btn.success{background:var(--ok)}.sectiontag{font-size:11px;font-weight:900;letter-spacing:.12em;color:var(--accent);margin-bottom:10px}.lessontext{font-size:17px;line-height:1.72}.memory{padding:14px;border-radius:14px;background:#f7f7ff;border:1px solid #ddddfb;margin-top:14px}.input{width:100%;border:1px solid var(--line);border-radius:13px;padding:13px;font:inherit;background:#fff;margin:8px 0 12px}.ratingrow{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:10px 0 14px}.tutorout{white-space:pre-wrap;line-height:1.65;margin-top:14px;padding:0 2px}.tiny{font-size:11px;color:var(--muted);line-height:1.5}.focus{border-color:#d7d7fa}@media(max-width:900px){.lessonlayout{grid-template-columns:1fr}.sticky{position:static}.lessonlayout aside{order:-1}.bigclock{font-size:2rem}}
/* V5 mobile-first coach layer */
.bottomnav{display:none}.coachbrief{background:linear-gradient(135deg,#f1f1ff,#fff);border:1px solid #dcdcfb}.coachbrief h2{margin:7px 0 8px}.coachbrief p{line-height:1.62}.coachgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.coachmetric{background:#fafbff;border:1px solid var(--line);border-radius:15px;padding:13px}.coachmetric b{font-size:22px;display:block}.mixedhi{font-family:Inter,"Noto Sans Devanagari","Nirmala UI","Mangal","Segoe UI",sans-serif}.mobiletimer{display:none}.decision{padding:12px 0;border-bottom:1px solid var(--line)}.decision:last-child{border:0}.statusdot{width:9px;height:9px;border-radius:50%;background:var(--ok);display:inline-block;margin-right:6px}
@media(max-width:760px){body{padding-bottom:72px}.top{height:58px;padding:8px 14px;align-items:center}.logo{width:34px;height:34px}.brand small{font-size:9px}.shell{padding:14px 12px 26px}.bottomnav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);bottom:0;left:0;right:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:7px max(5px,env(safe-area-inset-right)) calc(7px + env(safe-area-inset-bottom)) max(5px,env(safe-area-inset-left));box-shadow:0 -8px 30px rgba(20,28,45,.08)}.bottomnav a{text-align:center;text-decoration:none;color:var(--muted);font-size:11px;padding:7px 2px;border-radius:10px}.bottomnav a:active{background:var(--accent2);color:var(--accent)}.footer{display:none}.hero h1{font-size:26px}.hero p{font-size:14px}.card{padding:16px;border-radius:16px}.lessontext{font-size:16px;line-height:1.72}.coachgrid{grid-template-columns:1fr 1fr}.coachmetric b{font-size:19px}.lessonlayout aside{order:0}.lessonlayout aside .sticky{display:none}.mobiletimer{display:flex;position:sticky;top:58px;z-index:45;margin:-14px -12px 12px;padding:9px 12px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);align-items:center;gap:8px}.mobiletimer .mtclock{font-weight:900;font-variant-numeric:tabular-nums;margin-right:auto}.mobiletimer button{border:0;border-radius:10px;padding:8px 11px;font-weight:800}.mobiletimer .mtp{background:var(--accent2);color:var(--accent)}.mobiletimer .mtf{background:var(--accent);color:#fff}.qmeta{gap:8px;flex-wrap:wrap}.sectiontag{font-size:10px}.ratingrow{gap:8px}.btn{min-height:44px}}
.optionbtn{width:100%;display:block;text-align:left;border:1px solid #e5e7ef;background:#fff;border-radius:16px;padding:16px;margin:10px 0;font:inherit;color:inherit}.optionbtn b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:10px;background:#f0efff;margin-right:10px}.optionbtn.correct{border-color:#19a36b;background:#effbf6}.optionbtn.wrong{border-color:#d64b5d;background:#fff2f4}.optionbtn:disabled{opacity:1}.confidence{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:18px 0}.answerbox{padding:16px;border-radius:16px;margin:16px 0}.answerbox.good{background:#effbf6}.answerbox.bad{background:#fff2f4}.coachwhy{border-left:4px solid #5b5bd6;padding-left:14px}
@media(max-width:720px){.optionbtn{font-size:16px;padding:15px 13px}.confidence{display:grid;grid-template-columns:1fr 1fr}.confidence b{grid-column:1/-1}.answerbox{font-size:15px}}
/* V6.1 ordered practice + PYQ provenance */
.qtop{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.qtimer{font-weight:900;font-size:1.45rem;font-variant-numeric:tabular-nums;background:#f5f5ff;border:1px solid #dedffc;border-radius:13px;padding:8px 12px;min-width:78px;text-align:center}.qnav{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;margin-top:20px;align-items:center}.qnav .btn:last-child{justify-self:stretch}.btn.disabled{pointer-events:none;opacity:.35}.bookmark{border:1px solid var(--line);background:#fff;border-radius:13px;padding:12px 14px;font-weight:800;color:var(--muted);cursor:pointer}.bookmark.on{background:#fff8e8;color:#8a5b00;border-color:#ead394}.provenance{display:flex;flex-wrap:wrap;gap:7px 12px;align-items:center;background:#f8f9fc;border:1px solid var(--line);border-radius:14px;padding:11px 13px;margin:14px 0}.provenance b{width:100%}.provenance span,.provenance small{font-size:12px;color:var(--muted)}.verify{font-weight:900!important;padding:4px 7px;border-radius:99px;background:#f1f2f5}.verify.fully_verified{background:#eaf9f2;color:#137a52!important}.verify.answer_verified{background:#fff7e8;color:#8a5b00!important}.verify.dropped{background:#fff0f2;color:#a43143!important}
@media(max-width:720px){.qtop{position:sticky;top:58px;z-index:30;background:rgba(255,255,255,.97);margin:-16px -16px 12px;padding:12px 16px 9px;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.qtop .qmeta{font-size:11px}.qtimer{font-size:1.2rem;padding:7px 9px}.question{margin-top:18px}.qnav{grid-template-columns:1fr 1fr}.bookmark{grid-column:1/-1;grid-row:1}.qnav .btn{width:100%;padding:11px 8px}.provenance{font-size:12px}}