:root{
  --nav:#48567d;--nav-deep:#354364;--blue:#2f67e8;--gold:#ffb51b;--green:#198754;
  --paper:#f4f1e9;--sheet:#fffefb;--ink:#171b24;--muted:#667080;--line:#ddd9cf;
  --soft:#edf3ff;--serif:"Iowan Old Style","Palatino Linotype","Book Antiqua",Georgia,serif;
  --sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--nav-h:68px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{color:inherit}
body[data-theme="dark"]{--paper:#0f1420;--sheet:#161d2a;--ink:#f3f5fa;--muted:#a9b1bf;--line:#2c3648;--soft:#172640;color-scheme:dark}
.kh-skip{position:fixed;left:12px;top:-60px;z-index:3000;background:#fff;color:#111;padding:10px 14px;border-radius:8px;font-weight:800}.kh-skip:focus{top:8px}
.kh-top{position:sticky;top:0;z-index:1000;height:var(--nav-h);background:linear-gradient(90deg,var(--nav-deep),var(--nav));color:#fff;box-shadow:0 8px 28px rgba(25,35,65,.18)}
.kh-nav{width:min(1180px,calc(100% - 36px));height:100%;margin:auto;display:flex;align-items:center;gap:22px}
.kh-brand{display:flex;align-items:center;gap:10px;flex:none}.kh-brand-ic{width:31px;height:31px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(145deg,#4c83ff,#2058dd);box-shadow:inset 0 1px rgba(255,255,255,.35),0 5px 14px rgba(12,39,112,.35)}
.kh-brand strong{font-size:18px;letter-spacing:-.45px;font-weight:850}.kh-brand strong span{color:var(--gold)}.kh-brand small{margin-left:5px;color:#d8ddec;font-size:9px;font-weight:800;letter-spacing:.8px;text-transform:uppercase}
.kh-links{display:flex;align-items:center;gap:4px;margin-left:auto}.kh-links a{padding:9px 11px;border-radius:9px;color:#eef1fa;font-size:13px;font-weight:720;white-space:nowrap}.kh-links a:hover,.kh-links a[aria-current="page"]{background:rgba(255,255,255,.12);color:#fff}.kh-links .mock{margin-left:5px;background:var(--gold);color:#312200;padding-inline:15px}.kh-links .mock:hover{background:#ffc642;color:#251a00}
.kh-theme,.kh-menu{width:38px;height:38px;border:1px solid rgba(255,255,255,.22);border-radius:10px;background:rgba(255,255,255,.07);color:#fff;display:grid;place-items:center;cursor:pointer}.kh-menu{display:none;margin-left:auto;font-size:20px}
.kh-progress{position:fixed;z-index:1400;inset:0 0 auto;height:3px;pointer-events:none}.kh-progress i{display:block;width:0;height:100%;background:linear-gradient(90deg,#56a5ff,var(--gold));box-shadow:0 0 9px rgba(255,181,27,.5)}
.kh-wrap{width:min(1180px,calc(100% - 36px));margin:auto}

/* Hub home */
.hub-hero{position:relative;overflow:hidden;padding:70px 0 58px;background:radial-gradient(680px 420px at 80% 18%,rgba(47,103,232,.18),transparent 70%),linear-gradient(180deg,var(--sheet),var(--paper));border-bottom:1px solid var(--line)}
.hub-hero::after{content:"";position:absolute;right:-100px;bottom:-170px;width:470px;height:470px;border:1px solid rgba(47,103,232,.14);border-radius:50%;box-shadow:0 0 0 42px rgba(47,103,232,.035),0 0 0 90px rgba(47,103,232,.025)}
.hub-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);align-items:center;gap:66px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:10.5px;font-weight:850;letter-spacing:2.3px;text-transform:uppercase}.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(47,103,232,.1)}
.hub-hero h1{max-width:13ch;margin:15px 0 0;font:760 clamp(44px,6vw,72px)/.98 var(--serif);letter-spacing:-.055em;text-wrap:balance}.hub-hero h1 em{color:var(--blue);font-style:normal}
.hub-hero .deck{max-width:61ch;margin:20px 0 0;color:var(--muted);font:18px/1.7 var(--serif)}
.hero-stats{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}.hero-stats span{padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:color-mix(in srgb,var(--sheet) 75%,transparent);color:var(--muted);font-size:11.5px;font-weight:700}.hero-stats b{color:var(--ink);font-size:14px}
.shelf{height:355px;display:flex;align-items:flex-end;justify-content:center;gap:10px;perspective:900px}.book{position:relative;width:82px;border-radius:5px 12px 12px 5px;color:#fff;box-shadow:-8px 12px 25px rgba(30,38,58,.2),inset 5px 0 rgba(255,255,255,.12);transform-origin:bottom;display:flex;align-items:center;justify-content:center;writing-mode:vertical-rl;text-orientation:mixed;font-weight:850;letter-spacing:.8px}.book::after{content:attr(data-pages);position:absolute;bottom:14px;font-size:9px;letter-spacing:1px;color:rgba(255,255,255,.8)}.book.teach{height:325px;background:linear-gradient(135deg,#234b3d,#17362d);transform:rotate(-2deg)}.book.ssc{height:286px;background:linear-gradient(135deg,#334c85,#20325d);transform:rotate(1.5deg)}.book.upsc{height:245px;background:linear-gradient(135deg,#7b2940,#541b2c);transform:rotate(-1deg)}
.hub-search-zone{position:sticky;top:var(--nav-h);z-index:80;padding:14px 0;background:color-mix(in srgb,var(--paper) 91%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hub-search-zone .search-shell{position:relative;width:min(680px,calc(100% - 36px))}.hub-search{display:flex;align-items:center;gap:12px;width:100%;min-height:58px;margin:auto;padding:14px 17px;border:1px solid color-mix(in srgb,var(--line) 72%,transparent);border-radius:16px;background:var(--sheet);box-shadow:0 16px 44px rgba(31,39,60,.14)}.hub-search:focus-within{border-color:color-mix(in srgb,var(--blue) 65%,var(--line));box-shadow:0 0 0 4px rgba(47,103,232,.1),0 18px 48px rgba(31,39,60,.16)}.hub-search span{font-size:17px;filter:saturate(.75)}.hub-search input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-size:15px;font-weight:520}.hub-search input::placeholder{color:color-mix(in srgb,var(--muted) 82%,transparent)}.hub-search kbd{padding:3px 7px;border:1px solid var(--line);border-radius:6px;color:var(--muted);font-size:10px;background:var(--paper)}
.search-live{position:absolute;z-index:120;top:calc(100% + 10px);left:0;right:0;max-height:min(65vh,540px);overflow:auto;padding:8px;border:1px solid var(--line);border-radius:16px;background:color-mix(in srgb,var(--sheet) 96%,transparent);box-shadow:0 28px 75px rgba(25,33,52,.22);backdrop-filter:blur(18px)}.search-live[hidden]{display:none}.search-live-head{display:flex;align-items:center;justify-content:space-between;padding:8px 10px 10px;color:var(--muted);font-size:9px;font-weight:850;letter-spacing:1.25px;text-transform:uppercase}.search-live-head b{color:var(--blue);font-size:9px}.search-hit{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:11px;padding:11px;border-radius:11px}.search-hit:hover,.search-hit:focus{outline:0;background:var(--soft)}.search-hit-badge{min-width:48px;padding:6px 7px;border-radius:8px;background:var(--soft);color:var(--blue);font-size:8px;font-weight:850;text-align:center;letter-spacing:.65px}.search-hit b{display:block;font:710 13.5px/1.3 var(--serif)}.search-hit small{display:block;margin-top:3px;color:var(--muted);font-size:9.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-hit i{color:var(--blue);font-style:normal;font-size:17px}.search-live-more{margin:5px 7px 2px;padding:9px;border-top:1px solid var(--line);color:var(--muted);font-size:9.5px;text-align:center}.search-live-empty{display:grid;gap:4px;padding:25px;text-align:center}.search-live-empty b{font:720 15px var(--serif)}.search-live-empty span{color:var(--muted);font-size:10.5px}
.hub-main{padding:52px 0 82px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.section-head .label{color:var(--blue);font-size:10px;font-weight:850;letter-spacing:2.1px;text-transform:uppercase}.section-head h2{margin:6px 0 0;font:760 clamp(28px,4vw,40px)/1.06 var(--serif);letter-spacing:-.035em}.section-head p{max-width:52ch;margin:0;color:var(--muted);font:15px/1.65 var(--serif)}
.exam-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.exam-card{position:relative;display:flex;flex-direction:column;min-height:320px;padding:25px;border:1px solid var(--line);border-radius:18px;background:var(--sheet);box-shadow:0 18px 48px rgba(31,39,60,.06);overflow:hidden;transition:.22s}.exam-card:hover{transform:translateY(-5px);box-shadow:0 28px 60px rgba(31,39,60,.11)}.exam-card::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--exam)}.exam-card .topline{display:flex;justify-content:space-between;gap:12px;align-items:center}.exam-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:13px;background:color-mix(in srgb,var(--exam) 10%,var(--sheet));font-size:23px}.live-pill{padding:5px 9px;border-radius:999px;background:#e7f5ec;color:#0e713b;font-size:9px;font-weight:850;letter-spacing:1px;text-transform:uppercase}.exam-card h3{margin:23px 0 0;font:760 27px/1.08 var(--serif);letter-spacing:-.03em}.exam-card .count{margin-top:5px;color:var(--exam);font-size:12px;font-weight:850}.exam-card p{margin:14px 0;color:var(--muted);font:15px/1.65 var(--serif)}.subject-pills{display:flex;gap:6px;flex-wrap:wrap;margin:1px 0 21px}.subject-pills span{padding:5px 8px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:9.5px;font-weight:750}.exam-open{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:17px;border-top:1px solid var(--line);color:var(--exam);font-size:12.5px;font-weight:850}.exam-open i{font-style:normal;font-size:19px;transition:.18s}.exam-card:hover .exam-open i{transform:translateX(4px)}
.notes-section{margin-top:58px}.notes-bar{display:flex;align-items:center;gap:12px;margin-bottom:15px}.notes-bar h2{margin:0;font:760 27px/1.1 var(--serif)}.notes-bar .result-count{margin-left:auto;color:var(--muted);font-size:11.5px;font-weight:700}
.note-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.note-thumb{--thumb-accent:#2f67e8;--thumb-ink:#173569;display:grid;align-content:start;min-width:0;transition:transform .2s}.note-thumb.exam-teaching{--thumb-accent:#237257;--thumb-ink:#174c3b}.note-thumb.exam-ssc-cgl{--thumb-accent:#315cbb;--thumb-ink:#203f83}.note-thumb.exam-upsc{--thumb-accent:#9b3b54;--thumb-ink:#70243a}.thumb-paper{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:238px;padding:48px 27px 42px;border:1px solid #d9cfbb;border-radius:13px;background:linear-gradient(90deg,transparent 0 37px,rgba(202,82,82,.18) 37px 39px,transparent 39px),repeating-linear-gradient(180deg,#fffdf5 0 31px,rgba(79,122,180,.14) 31px 32px);color:var(--thumb-ink);box-shadow:0 18px 42px rgba(42,47,57,.11),inset 0 1px rgba(255,255,255,.8);overflow:hidden;isolation:isolate;transition:.2s}.thumb-paper::before{content:"";position:absolute;z-index:-1;width:92px;height:24px;top:-7px;left:50%;transform:translateX(-50%) rotate(-1.5deg);background:rgba(239,218,155,.52);box-shadow:0 1px 2px rgba(93,78,44,.12)}.thumb-label{position:absolute;top:15px;left:20px;right:20px;color:var(--thumb-accent);font-size:8.5px;font-weight:900;letter-spacing:1.15px;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thumb-paper b{display:block;max-width:100%;font:600 clamp(25px,2vw,32px)/1.07 Caveat,"Segoe Print","Bradley Hand",cursive;text-align:center;text-wrap:balance;overflow-wrap:anywhere}.thumb-open{position:absolute;left:20px;right:20px;bottom:14px;display:flex;align-items:center;justify-content:space-between;color:#786f5f;font-size:8.5px;font-weight:850;letter-spacing:.8px;text-transform:uppercase}.thumb-open i{color:var(--thumb-accent);font-style:normal;font-size:17px;line-height:1}.thumb-caption{display:block;min-height:34px;padding:8px 5px 0;color:var(--muted);font-size:9.5px;font-weight:720;line-height:1.35}.note-thumb:hover{transform:translateY(-5px)}.note-thumb:hover .thumb-paper{border-color:color-mix(in srgb,var(--thumb-accent) 48%,#d9cfbb);box-shadow:0 26px 55px rgba(42,47,57,.16),inset 0 1px rgba(255,255,255,.8)}.note-thumb:focus-visible{outline:0}.note-thumb:focus-visible .thumb-paper{outline:3px solid color-mix(in srgb,var(--thumb-accent) 35%,transparent);outline-offset:3px}.empty-results{grid-column:1/-1;padding:42px;border:1px dashed var(--line);border-radius:14px;text-align:center;color:var(--muted)}
.note-results.foldered{display:block}.folder-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-bottom:28px}.folder-index a{display:grid;gap:4px;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:var(--sheet);transition:.18s}.folder-index a:hover{border-color:color-mix(in srgb,var(--blue) 50%,var(--line));transform:translateY(-2px)}.folder-index b{font:720 13px/1.3 var(--serif)}.folder-index small{color:var(--muted);font-size:9.5px;font-weight:700}.folder-group{scroll-margin-top:calc(var(--nav-h) + 64px);padding:24px;border:1px solid var(--line);border-radius:18px;background:color-mix(in srgb,var(--sheet) 82%,var(--paper));box-shadow:0 18px 48px rgba(31,39,60,.05)}.folder-group+.folder-group{margin-top:22px}.folder-head{display:flex;align-items:center;gap:13px;margin-bottom:17px;padding-bottom:15px;border-bottom:1px solid var(--line)}.folder-number{display:grid;place-items:center;flex:0 0 42px;height:42px;border-radius:12px;background:var(--nav-deep);color:#fff;font-size:11px;font-weight:850;letter-spacing:1px}.folder-head h3{margin:0;font:760 22px/1.15 var(--serif);letter-spacing:-.02em}.folder-head p{margin:4px 0 0;color:var(--muted);font-size:10.5px}.folder-note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.folder-subgroup+.folder-subgroup{margin-top:28px;padding-top:23px;border-top:1px dashed var(--line)}.folder-subhead{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin:0 2px 13px}.folder-subhead h4{margin:0;font:730 16px/1.3 var(--serif)}.folder-subhead span{color:var(--muted);font-size:9.5px;font-weight:750;white-space:nowrap}
.coming{margin-top:52px;padding:23px 25px;border:1px dashed var(--line);border-radius:16px;background:color-mix(in srgb,var(--sheet) 65%,transparent)}.coming b{font:730 18px var(--serif)}.coming span{color:var(--muted);font-size:13px}.coming-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.coming-list i{font-style:normal;padding:7px 11px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:10.5px;font-weight:750}

/* Reader */
.reader-shell{min-height:100vh;--reader-font-scale:1}.reader-shell[data-reader-mode="dark"]{--paper:#0d1119;--sheet:#151b25;--ink:#f2f3f6;--muted:#a8b0bd;--line:#2c3440;--soft:#202c3d;--blue:#7da6ff;color-scheme:dark}.reader-shell[data-reader-mode="paper"]{--paper:#e6ddc8;--sheet:#fbf4e3;--ink:#30291f;--muted:#726858;--line:#d7c9aa;--soft:#efe3c7;--blue:#8d5d29}.reader-shell[data-reader-mode="focus"]{--paper:#f5f6f8;--sheet:#fff;--ink:#1c2027;--muted:#6e7580;--line:#e1e4e8;--soft:#f0f2f5;--blue:#375fae}
.reader-shell[data-reader-mode="paper"] .kh-top{background:linear-gradient(90deg,#534536,#71604d)}
.reader-subbar{position:sticky;top:var(--nav-h);z-index:90;background:color-mix(in srgb,var(--sheet) 92%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.reader-subin{width:min(1380px,calc(100% - 34px));height:46px;margin:auto;display:flex;align-items:center;gap:10px;color:var(--muted);font-size:10.5px;font-weight:750}.reader-subin a{color:var(--blue)}.reader-subin .sep{opacity:.45}.reader-subin .status{margin-left:auto;white-space:nowrap}
.reader-grid{width:min(1540px,calc(100% - 34px));margin:28px auto 70px;display:grid;grid-template-columns:255px minmax(0,1000px) 205px;justify-content:center;align-items:start;gap:28px}
.lesson-rail,.toc-rail{position:sticky;top:calc(var(--nav-h) + 64px);max-height:calc(100vh - var(--nav-h) - 84px);overflow:auto}.lesson-rail{padding:14px;border:1px solid var(--line);border-radius:15px;background:var(--sheet);box-shadow:0 16px 45px rgba(31,39,60,.05)}.rail-label,.toc-label{display:block;margin:2px 5px 10px;color:#929aa9;font-size:9px;font-weight:850;letter-spacing:1.7px;text-transform:uppercase}.rail-exam{display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;background:var(--soft);margin-bottom:12px}.rail-exam i{font-style:normal;font-size:18px}.rail-exam b{display:block;font-size:12.5px}.rail-exam small{display:block;color:var(--muted);font-size:9.5px;margin-top:2px}.rail-subject{margin:14px 5px 7px;color:var(--muted);font:720 12px/1.35 var(--serif)}.rail-lessons{display:grid;gap:2px}.rail-lessons a{display:grid;grid-template-columns:23px 1fr;gap:7px;padding:8px;border-radius:9px;color:var(--muted);font-size:10.5px;font-weight:680;line-height:1.35}.rail-lessons a span{color:#a4abba;font-size:9px}.rail-lessons a:hover{background:var(--soft);color:var(--ink)}.rail-lessons a.on{background:var(--nav-deep);color:#fff}.rail-lessons a.on span{color:#b9c6e9}.rail-all{display:block;margin-top:12px;padding:10px;border-top:1px solid var(--line);color:var(--blue);font-size:10.5px;font-weight:800;text-align:center}
.reader-paper{position:relative;min-width:0;padding:34px 52px 42px;border:1px solid var(--line);border-radius:18px;background:var(--sheet);box-shadow:0 28px 80px rgba(31,39,60,.08);transition:border-color .18s,box-shadow .18s}.reader-bookbar{display:flex;align-items:center;justify-content:space-between;gap:18px}.reader-kicker{color:var(--blue);font-size:10px;font-weight:850;letter-spacing:2.2px;text-transform:uppercase}.reader-actions{display:flex;align-items:center;gap:8px}.appearance-button,.focus-button{display:inline-flex;align-items:center;gap:7px;min-height:37px;padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--muted);font-size:10px;font-weight:800;cursor:pointer}.appearance-button:hover,.focus-button:hover{border-color:var(--blue);color:var(--ink)}.appearance-button .aa{color:var(--ink);font:750 16px/1 var(--serif)}.appearance-button i{font-style:normal;transition:.18s}.appearance-button[aria-expanded="true"] i{transform:rotate(180deg)}.focus-button span{color:var(--blue)}.reader-aa{font:750 14px var(--serif)}
.appearance-panel{display:none;margin:17px 0 23px;padding:17px;border:1px solid var(--line);border-radius:16px;background:color-mix(in srgb,var(--paper) 68%,var(--sheet));box-shadow:0 18px 40px rgba(30,37,48,.08)}.appearance-panel.open{display:block;animation:readerPanel .18s ease-out}.appearance-title{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.appearance-title span{display:grid}.appearance-title b{font:750 14px var(--serif)}.appearance-title small{margin-top:3px;color:var(--muted);font-size:9.5px}.appearance-title button{width:28px;height:28px;border:0;border-radius:50%;background:var(--sheet);color:var(--muted);cursor:pointer;font-size:18px}.mode-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin-top:14px}.mode-choice{min-width:0;display:flex;align-items:center;gap:8px;padding:9px 8px;border:1px solid var(--line);border-radius:12px;background:var(--sheet);text-align:left;cursor:pointer}.mode-choice:hover{border-color:color-mix(in srgb,var(--blue) 55%,var(--line))}.mode-choice.on{border-color:var(--blue);box-shadow:0 0 0 2px color-mix(in srgb,var(--blue) 13%,transparent)}.mode-choice span{min-width:0;display:grid}.mode-choice b{font-size:10.5px}.mode-choice small{margin-top:2px;color:var(--muted);font-size:7.8px;line-height:1.2}.mode-swatch{position:relative;flex:0 0 auto;width:25px;height:25px;border:1px solid rgba(0,0,0,.16);border-radius:50%;box-shadow:inset 0 1px rgba(255,255,255,.45)}.mode-swatch.light{background:#fff}.mode-swatch.dark{background:#151b25}.mode-swatch.paper{background:#f2e6c8}.mode-swatch.focus{background:linear-gradient(90deg,#e9ecf1 0 27%,#fff 27% 73%,#e9ecf1 73%)}.mode-choice.on .mode-swatch::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:10px;font-style:normal;text-shadow:0 1px 3px #000}.mode-choice[data-reader-mode="light"].on .mode-swatch::after,.mode-choice[data-reader-mode="paper"].on .mode-swatch::after{color:#24302a;text-shadow:none}.type-controls{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}.type-controls>span{display:flex;align-items:center;gap:7px}.type-controls b{font-size:10px}.type-controls small{color:var(--blue);font-size:9px;font-weight:800}.type-controls div{display:flex;padding:3px;border:1px solid var(--line);border-radius:10px;background:var(--sheet)}.type-controls button{min-width:42px;height:29px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:10px;font-weight:800;cursor:pointer}.type-controls button:hover{background:var(--soft);color:var(--ink)}.reader-paper h1{max-width:19ch;margin:13px 0 0;font:770 clamp(35px,4.5vw,52px)/1.02 var(--serif);letter-spacing:-.048em;text-wrap:balance}.reader-deck{max-width:65ch;margin:13px 0 0;color:var(--muted);font:16.5px/1.65 var(--serif)}.reader-meta{display:flex;align-items:center;gap:8px 15px;flex-wrap:wrap;margin:19px 0 0;padding:12px 0;border-block:1px solid var(--line);color:var(--muted);font-size:10.5px;font-weight:750}.reader-meta span+span::before{content:"";display:inline-block;width:3px;height:3px;margin-right:12px;border-radius:50%;background:#a2a9b7;vertical-align:middle}
.mobile-reader-nav{display:none}.note-frame{display:block;width:100%;min-height:420px;margin-top:28px;border:0;background:transparent}.reader-loading{padding:50px 0;text-align:center;color:var(--muted);font:15px var(--serif)}.reader-error{padding:36px;border:1px solid #e7b8b8;border-radius:13px;background:#fff1f1;color:#7f2525;text-align:center}
.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px;padding-top:22px;border-top:1px solid var(--line)}.lesson-nav a{min-height:78px;padding:13px 15px;border:1px solid var(--line);border-radius:11px;background:var(--paper)}.lesson-nav a.next{text-align:right;background:var(--nav-deep);border-color:var(--nav-deep);color:#fff}.lesson-nav small{display:block;margin-bottom:5px;color:#9199a7;font-size:8.5px;font-weight:850;letter-spacing:1.2px;text-transform:uppercase}.lesson-nav .next small{color:#bec9e5}.lesson-nav b{display:block;font:720 13.5px/1.3 var(--serif)}.lesson-nav a.off{visibility:hidden}
.toc-rail{padding:7px 0 12px 15px;border-left:1px solid var(--line)}.toc-links{display:grid}.toc-links a{padding:7px 9px;border-left:2px solid transparent;color:var(--muted);font-size:11px;font-weight:680;line-height:1.35}.toc-links a:hover{color:var(--ink)}.toc-links a.on{border-left-color:var(--blue);color:var(--blue);background:linear-gradient(90deg,rgba(47,103,232,.08),transparent)}.toc-read{margin:17px 9px 0;color:var(--muted);font-size:9.5px;font-weight:700}.toc-read b{color:var(--blue)}
.reader-foot{padding:26px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;text-align:center;background:var(--sheet)}
.focus-exit{display:none;position:fixed;z-index:1600;top:18px;right:20px;align-items:center;gap:8px;padding:10px 14px;border:1px solid #dfe3e9;border-radius:999px;background:rgba(255,255,255,.92);color:#303845;box-shadow:0 12px 34px rgba(25,35,55,.14);backdrop-filter:blur(12px);font-size:11px;font-weight:800;cursor:pointer}.focus-exit span{color:var(--blue)}
.reader-shell[data-reader-mode="focus"] .kh-top,.reader-shell[data-reader-mode="focus"] .reader-subbar,.reader-shell[data-reader-mode="focus"] .lesson-rail,.reader-shell[data-reader-mode="focus"] .toc-rail,.reader-shell[data-reader-mode="focus"] .reader-foot{display:none!important}.reader-shell[data-reader-mode="focus"] .reader-grid{grid-template-columns:minmax(0,1000px);width:min(1040px,calc(100% - 30px));margin-top:0}.reader-shell[data-reader-mode="focus"] .reader-paper{min-height:100vh;padding-top:72px;border:0;border-radius:0;box-shadow:none}.reader-shell[data-reader-mode="focus"] .reader-actions,.reader-shell[data-reader-mode="focus"] .appearance-panel,.reader-shell[data-reader-mode="focus"] .mobile-reader-nav{display:none!important}.reader-shell[data-reader-mode="focus"] .reader-bookbar{justify-content:flex-start}.reader-shell[data-reader-mode="focus"] .focus-exit{display:flex}.reader-shell[data-reader-mode="focus"] .reader-paper h1{max-width:16ch}.reader-shell[data-reader-mode="focus"] .kh-progress{top:0}
@keyframes readerPanel{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}
.site-foot{padding:38px 0 25px;background:#151d2d;color:#b3bdcd}.site-foot .inner{width:min(1180px,calc(100% - 36px));margin:auto}.site-foot strong{font:760 22px var(--serif);color:#fff}.site-foot strong span{color:var(--gold)}.site-foot p{max-width:54ch;margin:8px 0 0;font-size:12px;line-height:1.6}.foot-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:18px;font-size:11.5px;font-weight:700}.foot-links a:hover{color:#fff}.copyright{margin-top:22px;padding-top:15px;border-top:1px solid #2c374b;font-size:10.5px;color:#8792a5}

@media(max-width:1220px){.reader-grid{grid-template-columns:245px minmax(0,820px)}.toc-rail{display:none}.reader-paper{padding-inline:48px}}
@media(max-width:960px){.hub-hero-grid{grid-template-columns:1fr}.shelf{display:none}.exam-grid{grid-template-columns:1fr 1fr}.reader-grid{grid-template-columns:minmax(0,820px);width:min(850px,calc(100% - 24px));margin-top:16px}.lesson-rail{display:none}.mobile-reader-nav{position:sticky;top:calc(var(--nav-h) + 46px);z-index:70;display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:18px -10px 24px;padding:9px 10px;border-block:1px solid var(--line);background:color-mix(in srgb,var(--sheet) 94%,transparent);backdrop-filter:blur(12px)}.mobile-reader-nav select{min-width:0;width:100%;padding:9px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink);font-size:10.5px;font-weight:700}}
@media(max-width:760px){:root{--nav-h:64px}.kh-nav{width:calc(100% - 24px);gap:9px}.kh-brand small{display:none}.kh-brand strong{font-size:16px}.kh-menu{display:grid}.kh-links{position:absolute;display:none;top:calc(100% + 8px);left:12px;right:12px;padding:8px;border-radius:14px;background:var(--nav-deep);box-shadow:0 18px 45px rgba(18,27,52,.3)}.kh-top.open .kh-links{display:grid;grid-template-columns:1fr 1fr}.kh-links a{padding:12px}.kh-links .mock{margin:0;text-align:center}.hub-hero{padding:48px 0 42px}.hub-hero h1{font-size:clamp(39px,13vw,56px)}.hub-hero .deck{font-size:16.5px}.section-head{display:block}.section-head p{margin-top:10px}.exam-grid{grid-template-columns:1fr}.exam-card{min-height:285px}.note-results{grid-template-columns:1fr}.reader-paper{padding:25px 22px 35px}.reader-bookbar{align-items:flex-start}.reader-actions{gap:5px}.appearance-button,.focus-button{min-height:34px;padding:6px 9px}.appearance-button>span:not(.aa){display:none}.appearance-panel{margin:13px -7px 21px;padding:14px 11px}.mode-grid{grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible;padding:2px 1px 7px}.mode-choice{min-height:49px}.type-controls{position:sticky;left:0}.reader-paper h1{max-width:none;font-size:clamp(33px,10.5vw,45px)}.reader-deck{font-size:15.5px}.reader-meta span+span::before{display:none}.lesson-nav{grid-template-columns:1fr}.lesson-nav a.next{text-align:left}.reader-subin{width:calc(100% - 24px)}.reader-shell[data-reader-mode="focus"] .reader-paper{padding:66px 23px 38px}.focus-exit{top:12px;right:12px}}
@media(max-width:430px){.kh-top.open .kh-links{grid-template-columns:1fr}.kh-wrap{width:calc(100% - 28px)}.hub-search-zone .kh-wrap{width:calc(100% - 20px)}.hub-hero h1{letter-spacing:-.045em}.reader-grid{width:100%;margin-top:0}.reader-paper{border-inline:0;border-radius:0;box-shadow:none}.reader-subin .status{display:none}.mobile-reader-nav{margin-inline:-7px}.note-row{grid-template-columns:auto minmax(0,1fr)}.note-row .arrow{display:none}}
@media(max-width:960px){.folder-index,.folder-note-grid,.note-results{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.folder-index,.folder-note-grid,.note-results{grid-template-columns:1fr}.folder-group{padding:17px 14px;border-radius:15px}.folder-head{align-items:flex-start}.folder-head h3{font-size:19px}.folder-subhead{align-items:flex-start}.folder-subhead span{padding-top:3px}.thumb-paper{min-height:220px}.thumb-paper b{font-size:30px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* Let the original PHP note use nearly the full phone width. */
@media(max-width:430px){
  .note-frame{width:calc(100% + 36px);max-width:none;margin-left:-18px}
}

/* 2026-08-26 target redesign */
:root{--paper:#f7f4ed;--sheet:#fffefa;--ink:#111620;--muted:#667186;--line:#e1ddd4;--soft:#edf3ff;--blue:#2f67df;--nav:#17233a;--nav-deep:#0b1527;--serif:Fraunces,"Iowan Old Style",Georgia,serif}
body{background:linear-gradient(180deg,#f8f9fc 0,#f7f4ed 34%,#f7f4ed 100%)}
body[data-theme="dark"]{--paper:#101722;--sheet:#17202c;--ink:#f4f6fa;--muted:#aeb7c6;--line:#303a48;--soft:#1b2b43;background:#101722}
.hub-hero{padding:56px 0 0;border-bottom:0;background:radial-gradient(600px 430px at 79% 24%,rgba(61,117,231,.17),transparent 70%),radial-gradient(520px 300px at 15% 100%,rgba(255,255,255,.96),transparent 72%),linear-gradient(145deg,#f8faff 0%,#eef4ff 53%,#fffdf7 100%)}
body[data-theme="dark"] .hub-hero{background:radial-gradient(620px 430px at 79% 24%,rgba(70,127,240,.2),transparent 70%),linear-gradient(145deg,#131d2d,#121923 60%,#171b22)}
.hub-hero::after{right:-150px;bottom:-200px;width:580px;height:580px;box-shadow:0 0 0 55px rgba(47,103,232,.025),0 0 0 120px rgba(47,103,232,.018)}
.hub-hero-grid{grid-template-columns:minmax(0,1.25fr) minmax(330px,.75fr);gap:18px;align-items:center}.hero-copy{position:relative;z-index:2;padding-bottom:8px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;min-height:42px;padding:10px 18px;border:1px solid rgba(47,103,223,.18);border-radius:999px;background:rgba(255,255,255,.38);color:var(--blue);font-size:11px;font-weight:850;letter-spacing:2.5px;text-transform:uppercase}.eyebrow span{font-size:16px;letter-spacing:0}
.hub-hero h1{max-width:12.5ch;margin:23px 0 0;font:700 clamp(48px,5.5vw,76px)/1.02 var(--serif);letter-spacing:-.052em}.hub-hero h1 em{color:var(--blue)}
.hub-hero .deck{max-width:58ch;margin:22px 0 0;color:#596579;font:17px/1.7 var(--serif)}body[data-theme="dark"] .hub-hero .deck{color:var(--muted)}
.hero-art{position:relative;z-index:1;align-self:stretch;display:flex;align-items:center;justify-content:flex-end;min-height:360px}.hero-art img{display:block;width:min(100%,540px);height:auto;filter:drop-shadow(0 18px 24px rgba(29,43,70,.1))}
.stat-band{position:relative;z-index:3;display:grid;grid-template-columns:repeat(4,1fr);margin-top:24px;transform:none;border:1px solid #e2dcd0;border-radius:17px;background:rgba(255,254,250,.94);box-shadow:0 20px 55px rgba(38,45,58,.12);backdrop-filter:blur(14px);overflow:hidden}.stat-item{position:relative;min-width:0;display:flex;align-items:center;justify-content:center;gap:13px;padding:20px 15px}.stat-item+.stat-item::before{content:"";position:absolute;left:0;top:20%;height:60%;border-left:1px solid #e3ded5}.stat-item>span:last-child{display:grid;min-width:0}.stat-item b{font-size:24px;line-height:1;font-weight:850;letter-spacing:-.6px;color:var(--ink)}.stat-item small{margin-top:6px;color:var(--muted);font-size:10.5px;font-weight:650;white-space:nowrap}.stat-icon{display:grid;place-items:center;flex:0 0 45px;width:45px;height:45px;border-radius:50%;font-size:20px}.stat-icon.exam{background:#e9f0ff;color:#245fda}.stat-icon.lessons{background:#ffeaed;color:#d13d5c}.stat-icon.folders{background:#e7f6eb;color:#21924b}.stat-icon.free{background:#fff2cf;color:#e89d00}
body[data-theme="dark"] .stat-band{border-color:var(--line);background:rgba(23,32,44,.94)}body[data-theme="dark"] .stat-item+.stat-item::before{border-color:var(--line)}
.hub-search-zone{top:var(--nav-h);padding:30px 0 20px;border:0;background:linear-gradient(180deg,color-mix(in srgb,var(--paper) 97%,transparent),color-mix(in srgb,var(--paper) 91%,transparent));backdrop-filter:blur(16px)}
.hub-search-zone .search-shell{position:relative;width:min(1180px,calc(100% - 36px));display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.hub-search{min-height:66px;padding:15px 20px;border-color:#e3ded6;border-radius:17px;box-shadow:0 15px 38px rgba(35,42,55,.09)}.hub-search>span{font:400 30px/1 var(--sans);transform:rotate(-18deg);color:#46546a}.hub-search input{font-size:15.5px}.hub-search kbd{margin-right:54px}
.exam-filter-button{position:absolute;z-index:4;top:10px;right:11px;display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--line);border-radius:50%;background:var(--sheet);color:var(--muted);cursor:pointer}.exam-filter-button:hover,.exam-filter-button:focus-visible{outline:3px solid rgba(47,103,223,.14);border-color:var(--blue);color:var(--blue)}
.exam-filter-menu{position:absolute;z-index:140;top:calc(100% + 8px);right:0;min-width:210px;padding:7px;border:1px solid var(--line);border-radius:14px;background:var(--sheet);box-shadow:0 22px 55px rgba(30,37,50,.17)}.exam-filter-menu[hidden]{display:none}.exam-filter-menu button{display:block;width:100%;padding:11px 12px;border:0;border-radius:9px;background:transparent;text-align:left;color:var(--muted);font-size:12px;font-weight:750;cursor:pointer}.exam-filter-menu button:hover,.exam-filter-menu button.on{background:var(--soft);color:var(--blue)}
.search-live{top:calc(100% + 9px);right:57px}
.hub-main{padding:24px 0 82px}.section-head{align-items:end;margin:22px 0 24px}.section-head .label{letter-spacing:3px}.section-head h2{font-size:clamp(34px,4vw,46px)}.section-head p{font-family:var(--sans);font-size:14px;line-height:1.55}
.exam-grid{gap:20px}.exam-card{min-height:350px;padding:29px;border-radius:22px;box-shadow:0 16px 42px rgba(31,39,60,.065)}.exam-card::before{width:6px}.exam-card.is-selected{border-color:color-mix(in srgb,var(--exam) 55%,var(--line));box-shadow:0 0 0 3px color-mix(in srgb,var(--exam) 12%,transparent),0 24px 56px rgba(31,39,60,.1)}.exam-icon{width:52px;height:52px;border-radius:15px}.exam-card h3{margin-top:25px;font-size:30px}.exam-card .count{font-size:13px}.exam-card p{font-family:var(--sans);font-size:14px;line-height:1.55}.subject-pills span{padding:6px 10px;color:color-mix(in srgb,var(--exam) 85%,var(--muted));font-size:10px}.exam-open{font-size:13px}
.notes-section{margin-top:52px}.notes-section[hidden]{display:none!important}.trust-strip{display:grid;grid-template-columns:repeat(4,1fr);margin-top:38px;border:1px solid var(--line);border-radius:20px;background:var(--sheet);box-shadow:0 15px 38px rgba(35,42,55,.06);overflow:hidden}.trust-strip>div{position:relative;display:grid;place-items:center;padding:20px 12px;text-align:center}.trust-strip>div+div::before{content:"";position:absolute;left:0;top:17%;height:66%;border-left:1px solid var(--line)}.trust-strip span{color:var(--blue);font-size:27px;line-height:1}.trust-strip b{margin-top:8px;font-size:12px}.trust-strip small{margin-top:3px;color:var(--muted);font-size:9.5px}
@media(max-width:960px){.hub-hero-grid{grid-template-columns:minmax(0,1.25fr) minmax(250px,.75fr)}.hero-art{min-height:300px}.stat-item{gap:8px;padding-inline:9px}.stat-icon{width:40px;height:40px;flex-basis:40px}.exam-grid{grid-template-columns:1fr 1fr}.exam-card:last-child{grid-column:1/-1}}
@media(max-width:760px){
  .hub-hero{padding:20px 0 0}.hub-hero-grid{display:block;min-height:330px}.hero-copy{position:relative;z-index:2}.eyebrow{min-height:32px;padding:6px 12px;font-size:8.5px;letter-spacing:1.8px}.eyebrow span{font-size:13px}.hub-hero h1{position:relative;z-index:2;max-width:88%;margin-top:15px;font-size:clamp(38px,9.5vw,43px);line-height:1.03;text-wrap:wrap}.hub-hero .deck{position:relative;z-index:2;max-width:68%;margin-top:12px;font-size:14px;line-height:1.52}.hero-art{position:absolute;z-index:1;right:-38px;top:116px;width:57%;min-height:0;opacity:.97}.hero-art img{width:100%}
  .stat-band{grid-template-columns:repeat(4,1fr);margin-top:0;transform:none;border-radius:15px}.stat-item{min-height:68px;flex-direction:row;gap:6px;padding:8px 4px;text-align:left}.stat-item+.stat-item::before{top:18%;height:64%}.stat-icon{width:31px;height:31px;flex-basis:31px;font-size:13px}.stat-item b{font-size:18px}.stat-item small{margin-top:3px;font-size:7.5px;white-space:normal;line-height:1.15}
  .hub-search-zone{padding:18px 0 12px}.hub-search-zone .kh-wrap{width:calc(100% - 24px)}.hub-search{min-height:52px;padding:10px 13px}.hub-search>span{font-size:23px}.hub-search input{font-size:12.5px;padding-right:43px}.hub-search kbd{display:none}.exam-filter-button{top:4px;right:5px;width:44px;height:44px}.search-live{right:0}
  .hub-main{padding:12px 0 26px}.section-head{margin:14px 0 16px}.section-head .label{font-size:8px;letter-spacing:2.2px}.section-head h2{font-size:30px}.section-head p{margin-top:7px;font-size:12px}.exam-grid{display:flex;gap:12px;overflow-x:auto;padding:3px 1px 14px;scroll-padding-inline:1px;scroll-snap-type:x mandatory;overscroll-behavior-inline:contain;scrollbar-width:none}.exam-grid::-webkit-scrollbar{display:none}.exam-card,.exam-card:last-child{grid-column:auto;flex:0 0 100%;min-height:0;padding:18px 18px;border-radius:19px;scroll-snap-align:start}.exam-icon{width:39px;height:39px;border-radius:12px;font-size:18px}.live-pill{padding:4px 8px;font-size:8px}.exam-card h3{margin-top:15px;font-size:25px}.exam-card .count{font-size:11px}.exam-card p{margin:10px 0;font-size:12.5px;line-height:1.45}.subject-pills{margin-bottom:13px}.subject-pills span{padding:5px 8px;font-size:8.5px}.exam-open{padding-top:12px;font-size:11.5px}.notes-section{margin-top:30px}.trust-strip{grid-template-columns:repeat(4,1fr);margin-top:12px;border-radius:17px}.trust-strip>div{padding:12px 3px}.trust-strip span{font-size:21px}.trust-strip b{margin-top:6px;font-size:8.5px}.trust-strip small{font-size:7px;line-height:1.15}.site-foot{display:none}
}
@media(max-width:430px){.hub-hero-grid{min-height:320px}.hub-hero .deck{max-width:70%}.hero-art{right:-48px;top:122px;width:61%}.section-head h2{font-size:29px}.subject-pills{gap:5px}.subject-pills span{padding:5px 7px;font-size:8px}}

/* Final mobile catalogue override: stack all exams in normal page flow. */
@media(max-width:760px){
  .exam-grid{display:grid;grid-template-columns:1fr;gap:12px;overflow:visible;padding:3px 1px 4px;scroll-snap-type:none;overscroll-behavior:auto}
  .exam-card,.exam-card:last-child{width:100%;flex:none;scroll-snap-align:none}
}

/* Seven-exam catalogue: the order and naming mirror MockCampus. */
.live-pill[data-state="soon"]{background:#fff3d6;color:#8a5b00}
@media(min-width:1100px){.exam-grid{display:flex;flex-wrap:wrap;justify-content:center}.exam-card,.exam-card:last-child{flex:0 0 calc((100% - 60px)/4);width:auto;grid-column:auto}}
@media(min-width:761px) and (max-width:1099px){.exam-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.exam-card:last-child{grid-column:auto}}