:root{
    --ink:#0f172a; --ink2:#334155; --paper:#f8fafc; --card:#ffffff;
    --saffron:#4f46e5; --saffron-d:#4338ca; --line:#e2e8f0; --muted:#64748b;
    --green:#1f9d61; --red:#d64545; --purple:#7c3aed; --gray:#c9ccd6;
    --radius:16px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:"Plus Jakarta Sans",system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
  h1,h2,h3{font-family:"Plus Jakarta Sans",system-ui,sans-serif;letter-spacing:-.01em;line-height:1.15}
  a{color:inherit}
  button{font-family:inherit;cursor:pointer}
  .wrap{max-width:1120px;margin:0 auto;padding:0 20px}

  /* header */
  header.top{position:sticky;top:0;z-index:20;background:rgba(251,248,242,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:66px}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none}
  .logo{width:40px;height:40px;border-radius:11px;background:var(--ink);display:grid;place-items:center;color:var(--saffron);font-family:"Plus Jakarta Sans",sans-serif;font-weight:800;font-size:22px}
  .brand b{font-family:"Plus Jakarta Sans",sans-serif;font-size:20px}
  .brand small{display:block;font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-top:-2px}
  .links{display:flex;gap:26px;align-items:center}
  .links a{text-decoration:none;font-weight:600;font-size:15px;color:var(--ink2)}
  .links a:hover{color:var(--saffron-d)}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 22px;font-weight:700;font-size:15px;text-decoration:none;transition:transform .12s, background .2s}
  .btn:active{transform:scale(.97)}
  .btn-primary{background:var(--saffron);color:#fff}
  .btn-primary:hover{background:var(--saffron-d)}
  .btn-dark{background:var(--ink);color:#fff}
  .btn-ghost{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}
  .btn-sm{padding:8px 16px;font-size:14px}
  @media (max-width:760px){.links a:not(.btn){display:none}}

  /* hero */
  .hero{padding:72px 0 64px;position:relative;overflow:hidden}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
  .eyebrow{display:inline-block;background:#eef2ff;color:#4338ca;font-weight:700;font-size:13px;padding:6px 12px;border-radius:999px;letter-spacing:.03em}
  .hero h1{font-size:clamp(38px,6vw,64px);margin:18px 0 18px;font-weight:800}
  .hero h1 em{font-style:normal;color:var(--saffron-d)}
  .hero p.lead{font-size:18px;color:var(--muted);max-width:540px}
  .hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
  .hero-card{background:var(--ink);color:#fff;border-radius:24px;padding:28px;box-shadow:0 30px 60px -30px rgba(20,33,61,.55);transform:rotate(1.5deg)}
  .hero-card .q{font-size:13px;color:#aeb8d4;font-weight:600;letter-spacing:.05em;text-transform:uppercase}
  .hero-card h3{font-size:20px;margin:10px 0 18px;font-family:"Plus Jakarta Sans",system-ui,sans-serif;font-weight:600;line-height:1.4}
  .mini-opt{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:11px 14px;margin-bottom:9px;font-size:15px;display:flex;gap:10px}
  .mini-opt.ok{background:rgba(31,157,97,.25);border-color:#3cc184}
  .mini-opt span{opacity:.6;font-weight:700}
  .hero-card .foot{display:flex;justify-content:space-between;margin-top:16px;font-size:13px;color:#aeb8d4}
  @media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-card{transform:none}}

  /* sections */
  section{padding:64px 0}
  .sec-head{max-width:640px;margin-bottom:34px}
  .sec-head h2{font-size:clamp(30px,4vw,42px);margin-bottom:10px}
  .sec-head p{color:var(--muted);font-size:17px}
  .grid{display:grid;gap:18px}
  .g3{grid-template-columns:repeat(3,1fr)}
  .g4{grid-template-columns:repeat(4,1fr)}
  @media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.g3,.g4{grid-template-columns:1fr}}
  .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
  .course h3{font-size:22px;margin-bottom:6px}
  .course .tag{font-size:12px;font-weight:700;color:var(--saffron-d);text-transform:uppercase;letter-spacing:.06em}
  .course ul{list-style:none;margin-top:12px}
  .course li{padding:6px 0;border-top:1px dashed var(--line);font-size:15px;color:var(--ink2)}
  .feature .ic{width:44px;height:44px;border-radius:12px;background:#eef2ff;display:grid;place-items:center;font-size:22px;margin-bottom:14px}
  .feature h3{font-family:"Plus Jakarta Sans",system-ui,sans-serif;font-size:17px;font-weight:700;margin-bottom:6px}
  .feature p{color:var(--muted);font-size:15px}
  .band{background:var(--ink);color:#fff}
  .band .sec-head p{color:#b8c2dc}
  .band .card{background:var(--ink2);border-color:#3730a3;color:#fff}
  .band .feature p{color:#b8c2dc}
  .band .feature .ic{background:rgba(240,138,36,.18)}

  /* tests */
  .tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
  .tab{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:9px 18px;font-weight:700;font-size:14px;color:var(--ink2)}
  .tab.on{background:var(--ink);border-color:var(--ink);color:#fff}
  .test-card{display:flex;flex-direction:column;gap:10px;transition:box-shadow .2s, transform .2s}
  .test-card:hover{box-shadow:0 18px 40px -24px rgba(20,33,61,.4);transform:translateY(-2px)}
  .test-card .top{display:flex;justify-content:space-between;align-items:center}
  .pill{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:#f1f5f9;color:var(--ink2)}
  .pill.ent{background:#eef2ff;color:#4338ca}
  .test-card h3{font-size:21px}
  .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);font-weight:600}
  .best{font-size:13px;color:var(--green);font-weight:700;min-height:18px}
  .test-card .btn{margin-top:auto;align-self:flex-start}

  /* contact */
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
  @media (max-width:800px){.contact-grid{grid-template-columns:1fr}}
  label{display:block;font-weight:600;font-size:14px;margin:12px 0 6px}
  input,select,textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;font-size:15px;background:#fff;color:var(--ink)}
  input:focus,select:focus,textarea:focus{outline:none;border-color:var(--saffron)}
  .info-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
  .info-row .ic{font-size:22px}
  .info-row b{display:block}
  .info-row span{color:var(--muted);font-size:15px}
  footer{padding:30px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px;text-align:center}

  /* modal */
  .overlay{position:fixed;inset:0;background:rgba(20,33,61,.55);display:none;align-items:center;justify-content:center;z-index:50;padding:18px}
  .overlay.show{display:flex}
  .modal{background:#fff;border-radius:22px;max-width:480px;width:100%;padding:28px;max-height:92vh;overflow:auto}
  .modal h3{font-size:26px;margin-bottom:6px}
  .modal .sub{color:var(--muted);font-size:15px}
  .rules{background:var(--paper);border-radius:14px;padding:14px 16px;margin:16px 0;font-size:14px}
  .rules li{margin-left:18px;padding:3px 0}
  .modal .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}
  .err{color:var(--red);font-size:13px;margin-top:6px;min-height:16px}

  /* exam */
  #exam,#result{display:none;min-height:100vh}
  body.in-exam #site, body.in-result #site{display:none}
  body.in-exam #exam{display:block}
  body.in-result #result{display:block}
  .exam-bar{position:sticky;top:0;z-index:10;background:var(--ink);color:#fff}
  .exam-bar .wrap{display:flex;align-items:center;justify-content:space-between;height:62px;gap:12px}
  .exam-bar .t{font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .exam-bar .t small{display:block;color:#aeb8d4;font-weight:500;font-size:12px}
  .timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:18px;background:rgba(255,255,255,.1);padding:7px 14px;border-radius:10px;white-space:nowrap}
  .timer.low{background:var(--red)}
  .exam-body{display:grid;grid-template-columns:1fr 300px;gap:22px;padding:24px 20px 120px;max-width:1120px;margin:0 auto}
  @media (max-width:880px){.exam-body{grid-template-columns:1fr}}
  .qhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:10px;flex-wrap:wrap}
  .qhead .n{font-weight:800;font-size:15px;color:var(--saffron-d)}
  .qtext{font-size:19px;font-weight:600;margin-bottom:20px;line-height:1.5}
  .opt{display:flex;gap:14px;align-items:flex-start;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px;font-size:16px;color:var(--ink);transition:border-color .15s, background .15s}
  .opt:hover{border-color:#b9c0d4}
  .opt .k{flex:0 0 30px;height:30px;border-radius:50%;border:1.5px solid var(--gray);display:grid;place-items:center;font-weight:700;font-size:14px;color:var(--muted)}
  .opt.sel{border-color:var(--ink);background:#f1f5f9}
  .opt.sel .k{background:var(--ink);border-color:var(--ink);color:#fff}
  .exam-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
  .palette h4{font-size:15px;margin-bottom:12px}
  .pal{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
  .pal button{aspect-ratio:1;border-radius:10px;border:1.5px solid var(--line);background:#fff;font-weight:700;font-size:14px;color:var(--ink2)}
  .pal button.v{background:#fdecec;border-color:#f3b4b4;color:var(--red)}
  .pal button.a{background:var(--green);border-color:var(--green);color:#fff}
  .pal button.r{background:var(--purple);border-color:var(--purple);color:#fff}
  .pal button.ra{background:var(--purple);border-color:var(--green);box-shadow:inset 0 0 0 3px var(--green);color:#fff}
  .pal button.cur{outline:3px solid var(--saffron);outline-offset:1px}
  .legend{display:grid;grid-template-columns:1fr 1fr;gap:6px;font-size:12px;color:var(--muted);margin-top:14px}
  .legend i{display:inline-block;width:12px;height:12px;border-radius:4px;margin-right:6px;vertical-align:-1px}
  .counts{font-size:13px;color:var(--muted);margin-top:12px}

  /* result */
  .res-hero{background:var(--ink);color:#fff;padding:40px 0 34px}
  .res-hero h2{font-size:clamp(28px,4vw,40px)}
  .res-hero p{color:#b8c2dc}
  .score-row{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:24px}
  @media (max-width:760px){.score-row{grid-template-columns:repeat(2,1fr)}}
  .stat{background:var(--ink2);border-radius:14px;padding:16px}
  .stat b{display:block;font-size:28px;font-family:"Plus Jakarta Sans",sans-serif}
  .stat span{font-size:13px;color:#b8c2dc;font-weight:600}
  .stat.big{background:var(--saffron)}
  .stat.big span{color:#fff}
  table{width:100%;border-collapse:collapse;font-size:15px}
  th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
  th{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
  .rev{margin-bottom:14px}
  .rev .st{font-size:12px;font-weight:800;padding:4px 10px;border-radius:999px}
  .st.c{background:#e3f5ec;color:var(--green)} .st.w{background:#fdecec;color:var(--red)} .st.s{background:#f1f5f9;color:var(--muted)}
  .ropt{padding:9px 12px;border-radius:10px;margin:6px 0;font-size:15px;border:1px solid var(--line)}
  .ropt.right{background:#e3f5ec;border-color:#9fd8bb}
  .ropt.wrong{background:#fdecec;border-color:#f3b4b4}
  .exp{background:var(--paper);border-left:4px solid var(--saffron);padding:10px 14px;border-radius:8px;font-size:14px;margin-top:10px;color:var(--ink2)}
  .res-actions{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}
  sub,sup{font-size:.72em}

/* ---------- login additions ---------- */
[hidden]{display:none !important}
.setup-banner{background:#fff3cd;color:#7a5a00;padding:10px 20px;text-align:center;font-size:14px;border-bottom:1px solid #f1d98a}
.login-cta{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:22px;flex-wrap:wrap;border-left:5px solid var(--saffron)}
.user-chip{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:14px}
.user-chip .av{width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--saffron);display:grid;place-items:center;font-family:"Plus Jakarta Sans",sans-serif}
.menu{position:relative}
.menu-pop{position:absolute;right:0;top:46px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 40px -20px rgba(20,33,61,.35);min-width:210px;padding:8px;z-index:30}
.menu-pop button,.menu-pop a{display:block;width:100%;text-align:left;background:none;border:0;padding:10px 12px;border-radius:9px;font-weight:600;font-size:14px;color:var(--ink);text-decoration:none}
.menu-pop button:hover,.menu-pop a:hover{background:var(--paper)}
.menu-pop .who{padding:8px 12px 10px;border-bottom:1px solid var(--line);margin-bottom:6px;font-size:13px;color:var(--muted)}
.menu-pop .who b{display:block;color:var(--ink);font-size:15px}
.save-status{display:inline-block;font-size:13px;font-weight:700;padding:5px 12px;border-radius:999px;margin:6px 0 4px}
.save-status.ok{background:rgba(94,224,160,.18);color:#5ee0a0}
.save-status.wait{background:rgba(255,255,255,.1);color:#d7def0}
.save-status.bad{background:rgba(255,138,138,.18);color:#ff9d9d}
.save-status button{margin-left:8px;background:#fff;color:var(--ink);border:0;border-radius:999px;padding:3px 10px;font-weight:700;font-size:12px}
.linkbtn{background:none;border:0;color:var(--saffron-d);font-weight:700;font-size:14px;text-decoration:underline}
@media (max-width:760px){ .links .auth-only{display:none} #userBox{display:inline-flex} }

/* =================== FULL WEBSITE =================== */
#installBtn, .install-btn{display:none !important}
.can-install #installBtn, .can-install .install-btn{display:inline-flex !important}
.links a.on{color:var(--saffron-d)}
.links a{font-size:14.5px}
.nav-right{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:0;width:40px;height:40px;padding:9px;flex-direction:column;justify-content:space-between}
.burger span{display:block;height:2.5px;background:var(--ink);border-radius:2px}
.mobile-nav{border-top:1px solid var(--line);padding:8px 20px 14px;background:var(--paper)}
.mobile-nav a{display:block;padding:11px 4px;font-weight:600;text-decoration:none;border-bottom:1px dashed var(--line)}
@media (max-width:980px){ .links{display:none} .burger{display:flex} }
@media (min-width:981px){ .mobile-nav{display:none !important} }

.hero h1{font-size:clamp(36px,5.5vw,60px)}
.hero-points{list-style:none;margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:6px 18px;font-size:14.5px;color:var(--ink2);font-weight:600}
@media (max-width:560px){.hero-points{grid-template-columns:1fr}}
section.tight{padding:40px 0}
.sec-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.sec-row h2{font-size:clamp(26px,3.4vw,36px)}
.more{font-weight:700;color:var(--saffron-d);text-decoration:none}
.empty{color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:14px;padding:22px;text-align:center;grid-column:1/-1}
.muted{color:var(--muted)}
.narrow{max-width:820px}

.page-head{background:var(--ink);color:#fff;padding:52px 0 44px}
.page-head h1{font-size:clamp(32px,5vw,50px)}
.page-head p{color:#b8c2dc;margin-top:8px;font-size:17px}

.notice-list{display:grid;gap:12px}
.notice{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.notice.pinned{border-left:5px solid var(--saffron)}
.n-date{flex:0 0 58px;height:62px;border-radius:12px;background:var(--paper);display:flex;flex-direction:column;align-items:center;justify-content:center}
.n-date b{font-family:"Plus Jakarta Sans",sans-serif;font-size:24px;line-height:1}
.n-date span{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase}
.notice h3{font-family:"Plus Jakarta Sans",system-ui,sans-serif;font-size:17px;font-weight:700;margin-bottom:4px}
.notice p{color:var(--ink2);font-size:15px}

.topper-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.topper{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 14px;text-align:center}
.topper b{display:block;margin-top:10px}
.t-score{font-family:"Plus Jakarta Sans",sans-serif;font-size:24px;color:var(--saffron-d);font-weight:800}
.topper small{color:var(--muted);font-weight:600}
.ph{position:relative;background:#eef2ff;overflow:hidden;display:grid;place-items:center}
.ph span{font-family:"Plus Jakarta Sans",sans-serif;font-weight:800;font-size:34px;color:#a5b4fc}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .3s}
.ph img.loaded{opacity:1}
.ph.round{width:96px;height:96px;border-radius:50%;margin:0 auto}

.about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:26px;align-items:start}
@media (max-width:820px){.about-grid{grid-template-columns:1fr}}
.prose{font-size:17px;line-height:1.75;color:var(--ink2)}
.check-list{list-style:none}
.check-list li{padding:9px 0;border-bottom:1px dashed var(--line);font-weight:600}
.faculty{padding:0;overflow:hidden}
.faculty .ph{aspect-ratio:4/3.4}
.faculty .ph span{font-size:64px}
.f-body{padding:18px 20px 22px}
.f-body .tag{font-size:12px;font-weight:700;color:var(--saffron-d);text-transform:uppercase;letter-spacing:.06em}
.f-body h3{font-size:22px;margin:2px 0 4px}
.f-meta{color:var(--muted);font-size:14px;font-weight:600;margin-bottom:8px}
.f-body p{font-size:15px;color:var(--ink2)}

.gallery{columns:3 260px;column-gap:14px}
.g-item{display:block;width:100%;margin:0 0 14px;border:0;padding:0;background:none;border-radius:14px;overflow:hidden;position:relative;break-inside:avoid}
.g-item img{width:100%;display:block}
.g-item span{position:absolute;left:0;right:0;bottom:0;padding:24px 12px 10px;background:linear-gradient(transparent,rgba(0,0,0,.65));color:#fff;font-size:13px;font-weight:600;text-align:left}
.lightbox{max-width:min(1000px,94vw);text-align:center;color:#fff}
.lightbox img{max-width:100%;max-height:82vh;border-radius:12px}
#lightboxWrap{background:rgba(10,14,28,.88)}

.fee-card h3{font-size:21px}
.fee-amt{font-family:"Plus Jakarta Sans",sans-serif;font-size:28px;font-weight:800;color:var(--saffron-d);margin:12px 0}
.fee-card dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:14px}
.fee-card dt{color:var(--muted);font-weight:600}
.fee-note{font-size:13px;color:var(--muted);margin-top:10px}
.enq-card{padding:32px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.two{grid-template-columns:1fr}}
.done{text-align:center;padding:20px}
.done .big{width:70px;height:70px;border-radius:50%;background:#e3f5ec;color:var(--green);font-size:36px;display:grid;place-items:center;margin:0 auto 12px}

.cta-band{background:var(--saffron);color:#fff;padding:44px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.cta-inner h2{font-size:34px}
.cta-band .btn-primary{background:var(--ink)}

.site-foot{background:var(--ink);color:#c4cce0;padding:46px 0 0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.site-foot h4{color:#fff;font-size:15px;margin-bottom:10px;font-family:"Plus Jakarta Sans"}
.site-foot p{margin-bottom:7px}
.site-foot a{color:#c4cce0;text-decoration:none}
.site-foot a:hover{color:#fff}
.site-foot .brand small{color:#8f9bb8}
.foot-tag{margin-top:14px;color:#8f9bb8}
.foot-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.site-foot .foot-btns a.btn-primary{color:#fff}
.foot-ghost{border:1px solid #44557f;color:#fff !important}
.foot-copy{border-top:1px solid #2b3b63;margin-top:34px;padding:16px 20px;font-size:13px;color:#8f9bb8;display:flex;gap:10px;align-items:center}
.foot-install{color:var(--saffron) !important;font-size:13px}
footer{text-align:left}

/* =================== DASHBOARD / PORTAL SHARED =================== */
  .t-login{min-height:100vh;display:grid;place-items:center;padding:20px}
  .t-login .card{max-width:420px;width:100%;padding:32px}
  .dash-nav{background:var(--ink);color:#fff}
  .dash-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
  .dash-nav .brand b{color:#fff}
  .dash-nav .brand small{color:#aeb8d4}
  .dtabs{display:flex;gap:6px;overflow-x:auto;padding:14px 0;border-bottom:1px solid var(--line);margin-bottom:22px}
  .dtabs .tab{white-space:nowrap}
  .kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
  @media (max-width:800px){.kpis{grid-template-columns:repeat(2,1fr)}}
  .kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
  .kpi b{display:block;font-family:"Plus Jakarta Sans",sans-serif;font-size:32px}
  .kpi span{color:var(--muted);font-size:13px;font-weight:600}
  .filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;align-items:end}
  .filters > div{min-width:150px;flex:1}
  .filters label{margin-top:0}
  .tbl-wrap{overflow-x:auto}
  tr.click{cursor:pointer}
  tr.click:hover td{background:var(--paper)}
  .status{font-size:12px;font-weight:800;padding:3px 10px;border-radius:999px}
  .status.on{background:#e3f5ec;color:var(--green)}
  .status.off{background:#fdecec;color:var(--red)}
  .rank{font-family:"Plus Jakarta Sans",sans-serif;font-weight:800;font-size:18px;width:40px}
  .medal-1{color:#c9a227}.medal-2{color:#8e9aa8}.medal-3{color:#b0703c}
  .bar{height:8px;background:#f1f5f9;border-radius:99px;overflow:hidden;min-width:80px}
  .bar i{display:block;height:100%;background:var(--saffron);border-radius:99px}
  .add-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr 1.4fr auto;gap:10px;align-items:end}
  @media (max-width:900px){.add-grid{grid-template-columns:1fr 1fr}}
  .ok-msg{color:var(--green);font-size:14px;font-weight:600;min-height:18px;margin-top:8px}
  .muted{color:var(--muted)}
  .detail-q{border-top:1px dashed var(--line);padding:10px 0;font-size:14px}
  .modal.wide{max-width:760px}
  .pane[hidden]{display:none}
  @media (max-width:800px){#ovGrid,#bGrid{grid-template-columns:1fr !important}}

.login-card{max-width:420px;width:100%;padding:32px}
.hello{padding:22px 0 0}
.hello h2{font-size:clamp(24px,3.4vw,32px)}
.hello p{color:var(--muted)}
.dark-chip{background:rgba(255,255,255,.1);color:#fff}
.dark-chip .av{background:var(--saffron);color:#fff}
.portal .menu-pop{top:48px}
.stat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px}
@media (max-width:640px){.stat-cards{grid-template-columns:1fr 1fr}}
.hw{display:block}
.hw .hw-top{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:6px}
.hw .due{font-size:12px;font-weight:800;padding:3px 10px;border-radius:99px;background:#f1f5f9;color:var(--ink2)}
.hw .due.today{background:#eef2ff;color:#4338ca}
.hw .due.late{background:#fdecec;color:var(--red)}
.note-group{margin-bottom:22px}
.note-group h3{font-size:20px;margin-bottom:10px}
.note-row{display:flex;justify-content:space-between;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:8px;flex-wrap:wrap}
.note-row b{display:block}
.note-row small{color:var(--muted)}
.note-row .btns{display:flex;gap:8px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal .dh{font-size:11px;font-weight:800;color:var(--muted);text-align:center;text-transform:uppercase}
.cal .d{aspect-ratio:1;border-radius:10px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.cal .d small{font-size:10px;font-weight:800}
.cal .d.P{background:#e3f5ec;border-color:#9fd8bb;color:var(--green)}
.cal .d.A{background:#fdecec;border-color:#f3b4b4;color:var(--red)}
.cal .d.L{background:#fff6e0;border-color:#f0d58a;color:#9a6b00}
.cal .d.blank{background:none;border:0}
.cal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.cal-head h3{font-size:22px}
.fee-big{font-family:"Plus Jakarta Sans",sans-serif;font-size:30px;font-weight:800}
.progress{height:12px;background:#f1f5f9;border-radius:99px;overflow:hidden;margin:10px 0}
.progress i{display:block;height:100%;background:var(--green)}

.branches{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.branch{padding:0;overflow:hidden;display:flex;flex-direction:column}
.branch .map{width:100%;height:230px;border:0;display:block;background:#eef2ff}
.map-ph{display:grid !important;place-items:center;font-size:44px}
.b-body{padding:18px 20px 22px}
.b-body h3{font-size:21px;margin-bottom:4px}
.b-body p{margin-bottom:4px}
.b-body .btn{margin-top:10px}

.two3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:700px){.two3{grid-template-columns:1fr}.two3>[style*="span"]{grid-column:auto !important}}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px}
.badge{background:var(--red);color:#fff;border-radius:99px;font-size:11px;padding:1px 7px;margin-left:4px}
.add-grid{grid-template-columns:2fr 1fr 1.3fr 1.3fr 1.3fr auto}
@media (max-width:1000px){.add-grid{grid-template-columns:1fr 1fr}}
.att-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line);gap:10px}
.att-row b{font-size:15px}
.seg{display:inline-flex;border:1.5px solid var(--line);border-radius:999px;overflow:hidden}
.seg button{border:0;background:#fff;padding:7px 14px;font-weight:700;font-size:13px;color:var(--muted)}
.seg button.P.on{background:var(--green);color:#fff}
.seg button.A.on{background:var(--red);color:#fff}
.seg button.L.on{background:#e0a800;color:#fff}
.row-actions{display:flex;gap:10px;flex-wrap:wrap}
.item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;display:flex;gap:14px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
.item h4{font-size:16px;margin-bottom:2px}
.item p{font-size:14px;color:var(--ink2)}
.ed-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.ed-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.ed-card .ph{aspect-ratio:4/3}
.ed-card .b{padding:12px 14px}
.prev-q{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:6px 0;font-size:14px}
.prev-q .ok{color:var(--green);font-weight:700}
.enq.new{border-left:5px solid var(--saffron)}

.chk-row{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:6px}
.chk{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;margin:0}
.chk input{width:auto}
.toast{position:fixed;right:18px;bottom:18px;z-index:80;background:var(--ink);color:#fff;border-radius:14px;padding:14px 18px;box-shadow:0 18px 40px -16px rgba(0,0,0,.5);max-width:340px;font-size:14px;animation:tin .3s}
.toast b{color:var(--saffron)}
@keyframes tin{from{transform:translateY(20px);opacity:0}}
.act{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.act .dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:6px}
.act .dot.idle{background:var(--gray)}
.chap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px}
.chap-top{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center}
.chap h4{font-size:18px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.chips span{background:#f1f5f9;border-radius:99px;padding:3px 10px;font-size:12.5px;font-weight:600;color:var(--ink2)}
.warn-tag{background:#fdecec;color:var(--red);font-size:11px;font-weight:800;padding:2px 8px;border-radius:99px;white-space:nowrap}
@media (max-width:600px){.brand b{font-size:17px;white-space:nowrap}.nav-right .btn{padding:8px 12px;font-size:13px}.brand small{font-size:10px}}

.review p{font-size:15px;color:var(--ink2);margin:8px 0 10px;line-height:1.6}
.review .stars{color:#f5a623;letter-spacing:2px}
.review small{color:var(--muted)}
.foot-social{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.site-foot .foot-social a{color:var(--saffron)}

/* ===== Video lesson player (student app + teacher preview) ===== */
.lp{position:relative;background:var(--card);border-radius:18px}
.lp:fullscreen{background:#000;display:flex;flex-direction:column;justify-content:center;padding:12px;border-radius:0}
.lp:fullscreen .lp-cps{display:none}
.lp:fullscreen .lp-bar{background:#111827;color:#e2e8f0}
.lp-stage{position:relative;aspect-ratio:16/9;background:#0f172a;border-radius:16px;overflow:hidden}
.lp:fullscreen .lp-stage{max-height:calc(100vh - 80px);margin:0 auto;width:100%}
.lp-video,.lp-video>div,.lp-video iframe,.lp-video video{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}
.lp-video video{object-fit:contain}
.lp-load{display:grid;place-items:center;color:#cbd5e1;font-weight:600;padding:24px;text-align:center}
.lp-load.err{color:#fecaca}
.lp-cover{position:absolute;inset:0;background:rgba(15,23,42,.88);display:grid;place-items:center;color:#fff;text-align:center;padding:20px;z-index:2}
.lp-done h3{font-size:22px;margin:4px 0}.lp-done p{color:#cbd5e1;margin-bottom:14px}.lp-done .big{font-size:44px}
.lp-btns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.lp-cover .btn-ghost{border-color:#fff;color:#fff}
.lp-bar{display:flex;align-items:center;gap:14px;padding:12px 4px;flex-wrap:wrap}
.lp-track{position:relative;flex:1;min-width:160px;height:8px;background:var(--line);border-radius:99px}
.lp-far{position:absolute;left:0;top:0;bottom:0;background:#c7d2fe;border-radius:99px}
.lp-track b{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:#94a3b8;border:2px solid #fff;box-shadow:0 0 0 1px #94a3b8}
.lp-track b.next{background:#f59e0b;box-shadow:0 0 0 1px #f59e0b}
.lp-track b.ok{background:var(--green);box-shadow:0 0 0 1px var(--green)}
.lp-count{font-weight:700;font-size:13px;white-space:nowrap}
.lp-cps{display:grid;gap:8px}
.lp-cp{display:flex;gap:12px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff}
.lp-cp small{display:block;color:var(--muted);font-size:12.5px}
.lp-cp .ic{width:30px;height:30px;flex:none;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;background:#f1f5f9;color:var(--muted)}
.lp-cp.ok .ic{background:#dcfce7;color:var(--green)}
.lp-cp.next{border-color:#fcd34d;background:#fffbeb}.lp-cp.next .ic{background:#f59e0b;color:#fff}
.lp-cp.lock{opacity:.7}
.lp-msg{position:absolute;left:50%;top:14px;transform:translateX(-50%);background:#0f172a;color:#fff;padding:9px 16px;border-radius:99px;font-size:13.5px;font-weight:600;z-index:3;max-width:92%;text-align:center;box-shadow:0 10px 30px -10px rgba(0,0,0,.5)}
.lp-quiz{position:fixed;inset:0;z-index:200;background:rgba(15,23,42,.6);backdrop-filter:blur(4px);display:grid;place-items:center;padding:14px}
.lp-qcard{background:#fff;color:var(--ink);width:min(720px,100%);max-height:calc(100vh - 28px);overflow:auto;border-radius:20px;box-shadow:0 30px 70px -20px rgba(0,0,0,.5)}
.lp-qhead{position:sticky;top:0;background:#fff;display:flex;justify-content:space-between;gap:12px;align-items:flex-start;padding:18px 20px 12px;border-bottom:1px solid var(--line);z-index:1}
.lp-qhead small{color:var(--muted);font-weight:600}.lp-qhead h3{margin:2px 0 0;font-size:19px}
.lp-need{background:#eef2ff;color:var(--saffron-d);font-weight:700;font-size:13px;padding:6px 12px;border-radius:99px;white-space:nowrap}
.lp-qs{padding:8px 20px}
.lp-q{padding:14px 0;border-bottom:1px dashed var(--line)}.lp-q:last-child{border-bottom:0}
.lp-q>p{font-size:16px;margin-bottom:8px}
.lp-opt{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1.5px solid var(--line);border-radius:12px;margin:6px 0;cursor:pointer;font-size:15px}
.lp-opt input{position:absolute;opacity:0;pointer-events:none}
.lp-opt .l{width:24px;height:24px;flex:none;border-radius:50%;border:1.5px solid #cbd5e1;display:grid;place-items:center;font-weight:700;font-size:12.5px}
.lp-opt:has(input:checked){border-color:var(--saffron);background:#eef2ff}
.lp-opt:has(input:checked) .l{background:var(--saffron);border-color:var(--saffron);color:#fff}
.lp-opt:has(input:focus-visible){outline:2px solid var(--saffron);outline-offset:2px}
.lp-opt.right{border-color:var(--green);background:#f0fdf4}.lp-opt.right .l{background:var(--green);border-color:var(--green);color:#fff}
.lp-opt.wrong{border-color:var(--red);background:#fef2f2}
.lp-fb{font-size:13.5px;color:var(--ink2);margin-top:4px}
.lp-q.good .lp-fb{color:var(--green)}.lp-q.bad .lp-fb{color:var(--red)}
.lp-q.bad .lp-fb b,.lp-q.good .lp-fb b{color:var(--ink)}
.lp-qfoot{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:14px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.lp-res{flex:1;min-width:220px;font-size:14px}.lp-res b{display:block;font-size:20px}
.lp-res.ok b{color:var(--green)}.lp-res.bad b{color:var(--red)}
@media (max-width:600px){.lp-qhead{flex-direction:column}.lp-qfoot .btn{width:100%}.lp-qfoot .lp-btns{width:100%}.lp-qfoot .lp-btns .btn{flex:1}}
.toast-link{display:inline-block;margin-left:6px;color:#a5f3c4;font-weight:700;text-decoration:underline}
/* detailed solutions */
.sol{margin-top:10px;font-size:calc(15px*var(--qscale,1));line-height:1.6}
.sol-steps{margin:6px 0 8px 20px;padding:0}.sol-steps li{margin:5px 0;padding-left:4px}
.sol-steps li::marker{font-weight:800;color:var(--saffron)}
.sol-text{margin:6px 0}
.sol-why{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:8px 0}
.sol-trick{background:#ecfdf5;border:1px solid #a7f3d0;border-left:4px solid #10b981;border-radius:10px;padding:8px 12px;margin:8px 0}
.sol-mistake{background:#fef2f2;border:1px solid #fecaca;border-left:4px solid #ef4444;border-radius:10px;padding:8px 12px;margin:8px 0}
.sol-why b,.sol-trick b,.sol-mistake b{display:block;margin-bottom:2px}
.exp .sol-steps{margin-top:8px}