/* Pakki Chemistry — shared styles
   Palette: institutional navy (IIT / AIIMS blue), saffron for action, green for NEET / success.
   Always light: the brand should feel like an institution, not an app. */
:root{
  color-scheme: light;
  --bg:#f2f5fb; --surface:#ffffff; --ink:#0d1b33; --muted:#46566f; --line:#d6e0ee;
  --navy:#0b3d91; --navy-2:#1453c4; --navy-deep:#061d4d;
  --saffron:#f28c18; --saffron-deep:#b85a06; --saffron-soft:#fff1e0;
  --green:#12804a; --green-bright:#13a05c; --green-soft:#e4f6ec;
  --jee:#1453c4; --jee-soft:#e6eefc;
  --neet:#0f8a5f; --neet-soft:#e2f5ed;
  --mentor:#c2620a; --mentor-soft:#fff1e0;
  --warn:#fff4d6; --warn-ink:#7a5a00;
  --radius:16px; --shadow:0 10px 30px rgba(11,61,145,.10); --shadow-lg:0 22px 50px rgba(11,61,145,.22);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:16px/1.6 "Plus Jakarta Sans",system-ui,sans-serif}
h1,h2,h3,h4{font-family:"Plus Jakarta Sans",sans-serif;line-height:1.15;letter-spacing:-.015em}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
section{padding:80px 0}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--saffron-deep)}
.placeholder{background:var(--warn);color:var(--warn-ink);font-size:11.5px;padding:2px 8px;border-radius:6px;font-weight:600;white-space:nowrap}
.sec-head{max-width:680px;margin-bottom:40px}
.sec-head h2{font-size:clamp(28px,4vw,42px);margin:10px 0 12px;font-weight:700}
.sec-head p{color:var(--muted);font-size:17px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:13px 22px;border-radius:12px;font-weight:600;text-decoration:none;border:2px solid transparent;cursor:pointer;font:600 15.5px "Plus Jakarta Sans",sans-serif;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-2px)}
.btn.cta{background:var(--saffron);color:#1a1206;box-shadow:0 8px 20px rgba(242,140,24,.35)}
.btn.cta:hover{background:#ff9a26;box-shadow:0 12px 26px rgba(242,140,24,.45)}
.btn.navy{background:var(--navy);color:#fff}
.btn.navy:hover{background:var(--navy-2)}
.btn.outline{border-color:var(--navy);color:var(--navy);background:#fff}
.btn.outline:hover{background:var(--jee-soft)}
.btn.light{border-color:rgba(255,255,255,.6);color:#fff}
.btn.light:hover{background:rgba(255,255,255,.12)}

/* ---------- announcement bar ---------- */
.announce{background:linear-gradient(90deg,#ff9f2e,var(--saffron) 50%,#e5780a);color:#1a1206;font-size:14.5px}
.announce .wrap{display:flex;align-items:center;justify-content:center;gap:10px 18px;padding-top:9px;padding-bottom:9px;flex-wrap:wrap;text-align:center}
.announce b{font-weight:800}
.announce .pill{background:#1a1206;color:#ffd39e;border-radius:999px;padding:2px 10px;font-weight:700;font-size:13px}
.announce a{font-weight:700;text-underline-offset:3px}

/* ---------- header / nav ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(11,61,145,.06)}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:42px;width:auto}
.menu{display:flex;align-items:center;gap:6px;list-style:none}
.menu > li{position:relative}
.menu > li > a{display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;text-decoration:none;font-weight:600;font-size:15px;color:var(--ink)}
.menu > li > a:hover,.menu > li:focus-within > a,.menu > li.open > a{background:var(--jee-soft);color:var(--navy)}
.menu .caret{width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.menu > li:hover .caret{transform:rotate(225deg) translateY(-2px)}
.nav-right{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:0;width:44px;height:44px;border-radius:10px;cursor:pointer}
.burger span{display:block;width:22px;height:2px;background:var(--navy);margin:5px auto;border-radius:2px}

/* dropdown (hover on desktop) */
.dropdown{position:absolute;top:calc(100% + 10px);left:-20px;width:420px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:12px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s}
.dropdown::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}
.menu > li:hover .dropdown,.menu > li:focus-within .dropdown{opacity:1;visibility:visible;transform:none}
.dropdown a{display:flex;gap:14px;align-items:flex-start;padding:12px;border-radius:12px;text-decoration:none}
.dropdown a:hover{background:var(--bg)}
.dropdown .ico{flex:none;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:13px;color:#fff}
.dropdown .t{font-weight:700;font-size:15px;display:block}
.dropdown .d{font-size:13px;color:var(--muted)}
.dropdown .foot{border-top:1px solid var(--line);margin-top:6px;padding-top:6px}
.dropdown .foot a{font-weight:600;color:var(--navy);font-size:14px;padding:10px 12px}
.dropdown.narrow{width:280px}
.ico.jee{background:var(--jee)} .ico.neet{background:var(--neet)} .ico.mentor{background:var(--saffron)} .ico.notes{background:var(--navy-deep)}

@media (max-width:920px){
  .burger{display:block}
  .menu{position:fixed;inset:110px 0 0 0;background:#fff;flex-direction:column;align-items:stretch;padding:16px;gap:4px;overflow:auto;display:none}
  body.menu-open .menu{display:flex}
  .menu > li > a{font-size:17px;padding:14px}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;width:auto;box-shadow:none;border:0;padding:0 0 8px 8px}
  .menu .caret{display:none}
  .nav-right .btn{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;padding:72px 0 0;
  background:
    radial-gradient(900px 420px at 90% -10%,rgba(36,110,240,.75),transparent 60%),
    radial-gradient(700px 380px at -10% 110%,rgba(242,140,24,.28),transparent 60%),
    linear-gradient(150deg,var(--navy) 0%,var(--navy-deep) 100%)}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='64' viewBox='0 0 56 64'%3E%3Cpolygon points='28,2 54,17 54,47 28,62 2,47 2,17' fill='none' stroke='white' stroke-width='1.5'/%3E%3C/svg%3E")}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(34px,5.2vw,58px);font-weight:800;margin:16px 0 18px}
.hero h1 .hl{color:#ffb35c}
.hero .lead{font-size:18px;color:#d6e2f7;max-width:560px}
.hero .cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.badges span{font-size:13px;font-weight:600;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:6px 12px;border-radius:999px}
.hero-visual{position:relative}
.photo{aspect-ratio:4/5;border-radius:24px;background:linear-gradient(160deg,rgba(255,255,255,.14),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.22);display:grid;place-items:center;text-align:center;color:#cfdcf3;padding:24px}
.photo img{width:72px;opacity:.9;margin:0 auto 12px}

/* countdown card */
.countdown-card{position:absolute;left:-36px;bottom:28px;background:#fff;color:var(--ink);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow-lg);min-width:270px;border-top:5px solid var(--saffron)}
.countdown-card .lbl{font-size:12.5px;font-weight:700;color:var(--saffron-deep);text-transform:uppercase;letter-spacing:.08em}
.countdown-card .exam{font-weight:700;font-size:15px;margin:2px 0 10px}
.timer{display:flex;gap:8px}
.timer div{background:var(--navy);color:#fff;border-radius:10px;padding:8px 0;width:58px;text-align:center}
.timer b{display:block;font:800 22px "Plus Jakarta Sans",sans-serif;line-height:1.1}
.timer small{font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;opacity:.8}
.countdown-card .note{font-size:12.5px;color:var(--muted);margin-top:10px}
.countdown-card .note a{color:var(--navy);font-weight:700}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{max-width:420px}
  .countdown-card{left:16px;right:16px;min-width:0}
}

/* stats strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;transform:translateY(40px)}
.stat{background:#fff;color:var(--ink);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-lg);border-bottom:4px solid var(--navy)}
.stat:nth-child(2){border-color:var(--saffron)} .stat:nth-child(3){border-color:var(--jee)} .stat:nth-child(4){border-color:var(--neet)}
.stat b{display:block;font:800 30px "Plus Jakarta Sans",sans-serif;color:var(--navy)}
.stat span{color:var(--muted);font-size:14px}
.after-hero{padding-top:120px}
@media (max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- program cards ---------- */
.programs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.pcard{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;position:relative}
.pcard:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--navy-2)}
.pcard .top{padding:22px 24px;color:#fff}
.pcard.jee .top{background:linear-gradient(135deg,var(--jee),var(--navy))}
.pcard.neet .top{background:linear-gradient(135deg,#14a874,var(--neet))}
.pcard.mentor .top{background:linear-gradient(135deg,#ff9f2e,var(--mentor))}
.pcard .tag{font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;opacity:.9}
.pcard h3{font-size:24px;margin-top:6px;font-weight:700}
.pcard .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:14px;flex:1}
.price{font:800 34px "Plus Jakarta Sans",sans-serif;color:var(--ink)}
.price s{font-size:18px;color:var(--muted);font-weight:500;margin-left:6px}
.price small{font:400 14px "Plus Jakarta Sans",sans-serif;color:var(--muted)}
.pcard ul{list-style:none;display:grid;gap:9px;font-size:15px;flex:1}
.pcard li{padding-left:28px;position:relative}
.pcard li::before{content:"✓";position:absolute;left:0;top:1px;width:19px;height:19px;border-radius:50%;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:800;display:grid;place-items:center}
.pcard .urgent{font-size:13px;font-weight:700;color:var(--saffron-deep);background:var(--saffron-soft);padding:8px 12px;border-radius:10px}
.pcard .actions{display:flex;gap:10px;flex-wrap:wrap}
.pcard .actions .btn{flex:1;justify-content:center}
.pcard.featured{border:2px solid var(--saffron);transform:translateY(-10px);box-shadow:0 22px 50px rgba(194,98,10,.22)}
.pcard.featured:hover{transform:translateY(-16px)}
.ribbon{position:absolute;top:16px;right:-36px;transform:rotate(35deg);background:#1a1206;color:#ffd39e;font-size:11.5px;font-weight:800;letter-spacing:.06em;padding:5px 42px;text-transform:uppercase}
@media (max-width:960px){.programs{grid-template-columns:1fr}.pcard.featured{transform:none}}

/* filter chips (programs & results) */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.chip{border:2px solid var(--line);background:#fff;border-radius:999px;padding:8px 18px;font:600 14.5px "Plus Jakarta Sans",sans-serif;cursor:pointer;color:var(--muted);transition:.15s}
.chip:hover{border-color:var(--navy-2);color:var(--navy)}
.chip.active{background:var(--navy);border-color:var(--navy);color:#fff}

/* notes strip */
.notes-band{margin-top:28px;background:linear-gradient(135deg,var(--navy-deep),var(--navy));color:#fff;border-radius:20px;padding:28px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.notes-band h3{font-size:22px}
.notes-band p{color:#cfdcf3;font-size:15px}

/* why */
.why{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.why-card{padding:24px;border-radius:18px;background:var(--bg);border:1px solid var(--line);transition:.2s}
.why-card:hover{background:#fff;box-shadow:var(--shadow);transform:translateY(-4px)}
.why-card .n{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font:800 17px "Plus Jakarta Sans",sans-serif;color:#fff;background:var(--navy);margin-bottom:14px}
.why-card:nth-child(2) .n{background:var(--saffron)} .why-card:nth-child(3) .n{background:var(--neet)} .why-card:nth-child(4) .n{background:var(--jee)}
.why-card h3{font-size:18px;margin-bottom:6px}
.why-card p{color:var(--muted);font-size:15px}
@media (max-width:900px){.why-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.why-grid{grid-template-columns:1fr}}

/* results */
.year-tabs{display:flex;gap:0;border-bottom:2px solid var(--line);margin-bottom:24px;overflow-x:auto}
.year-tab{background:none;border:0;padding:14px 22px;font:700 17px "Plus Jakarta Sans",sans-serif;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px;white-space:nowrap}
.year-tab:hover{color:var(--navy)}
.year-tab.active{color:var(--navy);border-bottom-color:var(--saffron)}
.summary{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:28px}
.summary div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.summary b{display:block;font:800 26px "Plus Jakarta Sans",sans-serif;color:var(--navy)}
.summary span{font-size:13.5px;color:var(--muted)}
@media (max-width:760px){.summary{grid-template-columns:1fr 1fr}}
.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:1000px){.results-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.results-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.results-grid{grid-template-columns:1fr}}
.rcard{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;text-align:center;transition:.2s}
.rcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.rcard .band{padding:6px;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#fff}
.rcard.jeeadv .band{background:var(--navy)} .rcard.jeemain .band{background:var(--jee)} .rcard.neet .band{background:var(--neet)}
.rcard .avatar{width:84px;height:84px;border-radius:50%;margin:20px auto 10px;background:var(--bg);border:3px solid var(--line);display:grid;place-items:center;font:700 26px "Plus Jakarta Sans",sans-serif;color:var(--muted)}
.rcard .rank{font:800 24px "Plus Jakarta Sans",sans-serif;color:var(--navy)}
.rcard.neet .rank{color:var(--neet)}
.rcard .name{font-weight:700;margin-top:2px}
.rcard .meta{font-size:13px;color:var(--muted);padding:0 14px}
.rcard .college{display:inline-block;margin:12px 0 18px;font-size:12.5px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--saffron-soft);color:var(--saffron-deep)}
.empty{padding:40px;text-align:center;color:var(--muted);background:#fff;border-radius:16px;border:1px dashed var(--line)}

/* lead box */
.lead-box{background:linear-gradient(135deg,var(--navy),var(--navy-deep));color:#fff;border-radius:24px;padding:44px;display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center;position:relative;overflow:hidden}
.lead-box h2{font-size:clamp(26px,3.5vw,36px)}
.lead-box p{color:#cfdcf3;margin-top:10px}
.lead-box form{display:grid;gap:10px}
.lead-box input,.lead-box select{padding:14px;border-radius:12px;border:0;font:inherit;background:#fff;color:var(--ink)}
.lead-box button{justify-content:center}
@media (max-width:760px){.lead-box{grid-template-columns:1fr;padding:28px}}

/* about */
.about{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:center}
.about .photo{background:linear-gradient(160deg,var(--jee-soft),#fff);border-color:var(--line);color:var(--muted)}
.about p{color:var(--muted);margin-top:14px}
@media (max-width:760px){.about{grid-template-columns:1fr}}

/* faq */
details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:10px;transition:.15s}
details:hover{border-color:var(--navy-2)}
details[open]{box-shadow:var(--shadow)}
summary{cursor:pointer;font-weight:700;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::after{content:"+";font-size:22px;color:var(--saffron-deep);line-height:1}
details[open] summary::after{content:"–"}
details p{color:var(--muted);margin-top:10px}

/* page header (inner pages) */
.page-head{background:linear-gradient(150deg,var(--navy),var(--navy-deep));color:#fff;padding:56px 0 64px;position:relative;overflow:hidden}
.page-head h1{font-size:clamp(30px,4.5vw,48px);font-weight:800;margin:10px 0 12px}
.page-head p{color:#cfdcf3;max-width:640px;font-size:17px}
.page-head .eyebrow{color:#ffc27a}
.crumbs{font-size:13.5px;color:#a9bde3}
.crumbs a{color:#fff;text-decoration:none}

/* program detail */
.detail-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:start}
.buy-box{position:sticky;top:96px;background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden;border:1px solid var(--line)}
.buy-box .top{padding:20px 24px;color:#fff}
.buy-box .body{padding:22px 24px;display:grid;gap:14px}
.buy-box .btn{justify-content:center}
.buy-box .small{font-size:13px;color:var(--muted);text-align:center}
.block{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;margin-bottom:22px}
.block h2{font-size:24px;margin-bottom:16px}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.feature-list div{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:12px;background:var(--bg)}
.feature-list i{font-style:normal;flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--navy);color:#fff;font-size:16px}
.feature-list b{display:block;font-size:15px}

.week{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}
.week div{border-radius:12px;padding:12px 8px;text-align:center;font-size:13px;background:var(--bg);border:1px solid var(--line)}
.week b{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.week .live{background:var(--jee-soft);border-color:#b9cdf5}
.week .test{background:var(--saffron-soft);border-color:#f7cf9f}
.week .doubt{background:var(--green-soft);border-color:#b5e3c9}
.timeline{list-style:none;border-left:3px solid var(--line);margin-left:8px}
.timeline li{position:relative;padding:0 0 18px 22px}
.timeline li::before{content:"";position:absolute;left:-9px;top:5px;width:15px;height:15px;border-radius:50%;background:#fff;border:3px solid var(--saffron)}
.timeline b{display:block}
.timeline span{color:var(--muted);font-size:14.5px}
@media (max-width:900px){.detail-grid{grid-template-columns:1fr}.buy-box{position:static}.feature-list{grid-template-columns:1fr}.week{grid-template-columns:repeat(4,1fr)}}

/* mobile sticky enroll bar */
.sticky-enroll{display:none}
@media (max-width:900px){
  .sticky-enroll{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);padding:10px 16px;align-items:center;justify-content:space-between;gap:12px;box-shadow:0 -8px 24px rgba(11,61,145,.12)}
  .sticky-enroll b{font:800 20px "Plus Jakarta Sans",sans-serif}
  .sticky-enroll small{display:block;font-size:12px;color:var(--saffron-deep);font-weight:700}
  body.has-sticky{padding-bottom:76px}
  body.has-sticky .wa-float{bottom:90px}
}

/* whatsapp float */
.wa-float{position:fixed;right:18px;bottom:18px;z-index:45;width:58px;height:58px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 10px 26px rgba(0,0,0,.25);transition:transform .15s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px;fill:#fff}

/* footer */
.site-footer{background:var(--navy-deep);color:#b9c8e6;padding:56px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer ul{list-style:none;display:grid;gap:8px;font-size:14.5px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:#fff}
.foot-brand img{height:40px;background:#fff;border-radius:10px;padding:6px 10px}
.foot-brand p{font-size:14px;margin-top:12px;max-width:300px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:13.5px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.tricolor{height:4px;background:linear-gradient(90deg,var(--saffron) 0 33.3%,#fff 33.3% 66.6%,var(--green-bright) 66.6%)}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
.feature-list span{color:var(--muted)}
.feature-list > div > span > span{display:block;font-size:13.5px}
.feature-list b{color:var(--ink)}
.price small{white-space:nowrap}
.ribbon{top:0;right:auto;left:50%;transform:translateX(-50%);border-radius:0 0 10px 10px;padding:4px 14px;z-index:1}
.pcard.featured .top{padding-top:38px}
@media (max-width:920px){
  .menu{position:absolute;inset:auto 0 auto 0;top:100%;max-height:calc(100vh - 70px);box-shadow:0 18px 30px rgba(11,61,145,.15)}
}
@media (max-width:600px){
  .announce{font-size:13.5px}
  .announce .wrap > span:nth-child(2){display:none}
}

/* ================= NOTES STORE ================= */
.btn.sm{padding:8px 14px;font-size:14px;border-radius:10px}
.notes-head.jee{background:linear-gradient(150deg,var(--jee),var(--navy-deep))}
.notes-head.neet{background:linear-gradient(150deg,#0f8a5f,#06402c)}
.notes-head .badges span{font-size:13px;font-weight:600;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:6px 12px;border-radius:999px}

/* exam chooser */
.exam-pick{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.exam-card{display:block;text-decoration:none;color:#fff;border-radius:24px;padding:34px;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s;box-shadow:var(--shadow)}
.exam-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.exam-card.jee{background:linear-gradient(140deg,var(--jee),var(--navy-deep))}
.exam-card.neet{background:linear-gradient(140deg,#14a874,#06402c)}
.exam-card .tag{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.85}
.exam-card h2{font-size:32px;margin:8px 0}
.exam-card p{opacity:.85}
.exam-card .from{margin-top:18px;background:rgba(255,255,255,.12);display:inline-block;padding:8px 14px;border-radius:10px}
.exam-card .go{display:block;margin-top:22px;font-weight:700;color:#ffc27a}
@media (max-width:760px){.exam-pick{grid-template-columns:1fr}}

/* price tiers */
.tiers{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:stretch}
.tier{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 18px;display:flex;flex-direction:column;gap:8px;position:relative;overflow:hidden;transition:.2s}
.tier:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--navy-2)}
.tier .tn{font-weight:700;font-size:15px;color:var(--muted)}
.tier .tp{font:800 28px "Plus Jakarta Sans",sans-serif}
.tier .tp s{font-size:15px;color:var(--muted);font-weight:500}
.tier p{font-size:13.5px;color:var(--muted);flex:1}
.tier .btn{justify-content:center;padding:10px 12px;font-size:14px}
.tier.best{border:2px solid var(--saffron);box-shadow:0 18px 40px rgba(194,98,10,.2);padding-top:38px}
@media (max-width:1000px){.tiers{grid-template-columns:repeat(2,1fr)}.tier.best{grid-column:1/-1;order:-1}}
.credit{margin-top:18px;background:var(--green-soft);border:1px solid #b5e3c9;color:#0b5a33;border-radius:14px;padding:14px 18px;font-size:15px}

/* six-part format */
.format-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.format-grid div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.format-grid b{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--navy);color:#fff;font:800 15px "Plus Jakarta Sans",sans-serif;margin-bottom:10px}
.format-grid div:nth-child(2) b{background:var(--saffron)}
.format-grid h4{font-size:15px;margin-bottom:4px}
.format-grid p{font-size:13px;color:var(--muted)}
@media (max-width:1000px){.format-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.format-grid{grid-template-columns:1fr 1fr}}

/* chapter list */
.branch-buy{display:none;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:var(--saffron-soft);border:1px solid #f7cf9f;border-radius:14px;padding:12px 16px;margin-bottom:14px}
.chapter-list{display:grid;gap:10px}
.ch-row{display:grid;grid-template-columns:44px 1fr 170px 210px;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 18px;transition:.15s}
.ch-row:hover{border-color:var(--navy-2);box-shadow:var(--shadow)}
.ch-row.sel{border-color:var(--saffron);background:#fffaf3}
.ch-check input{width:20px;height:20px;accent-color:var(--saffron);cursor:pointer}
.free{background:var(--green);color:#fff;font-size:10.5px;font-weight:800;padding:3px 6px;border-radius:6px}
.ch-name{font-weight:700;font-size:16px}
.hot-tag{font-size:11.5px;font-weight:700;color:var(--saffron-deep);background:var(--saffron-soft);padding:2px 8px;border-radius:999px;margin-left:6px;white-space:nowrap}
.ch-meta{font-size:13.5px;color:var(--muted);margin-top:3px}
.br{font-size:11.5px;font-weight:700;padding:2px 8px;border-radius:6px;margin-right:6px}
.br.physical{background:var(--jee-soft);color:var(--jee)} .br.inorganic{background:var(--green-soft);color:var(--green)} .br.organic{background:var(--saffron-soft);color:var(--saffron-deep)}
.ch-weight small{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.bars{display:flex;align-items:flex-end;gap:5px;height:34px}
.bars span{flex:1;background:linear-gradient(var(--navy-2),var(--navy));border-radius:4px 4px 0 0;position:relative;min-height:4px}
.bars span:last-child{background:linear-gradient(#ffa940,var(--saffron))}
.bars em{display:none}
.ch-act{display:flex;gap:8px;justify-content:flex-end}
@media (max-width:860px){
  .ch-row{grid-template-columns:32px 1fr;gap:10px 12px}
  .ch-weight,.ch-act{grid-column:2}
  .ch-act{justify-content:flex-start}
  .ch-weight{max-width:200px}
}

/* selection bar */
.sel-bar{position:fixed;left:50%;bottom:18px;transform:translate(-50%,140%);z-index:44;background:var(--navy-deep);color:#fff;border-radius:16px;padding:12px 14px 12px 20px;display:flex;gap:18px;align-items:center;box-shadow:0 18px 40px rgba(6,29,77,.4);width:min(720px,calc(100% - 32px));transition:transform .25s}
.sel-bar.show{transform:translate(-50%,0)}
.sel-bar > div{flex:1}
.sel-bar b{display:block;font:700 16px "Plus Jakarta Sans",sans-serif}
.sel-bar span{font-size:13px;color:#ffc27a}
body.sel-open .wa-float{bottom:100px}

/* preview modal */
.modal{position:fixed;inset:0;z-index:100;background:rgba(6,20,50,.6);backdrop-filter:blur(3px);display:none;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto}
.modal.open{display:flex}
.modal-box{background:var(--bg);border-radius:22px;width:min(1080px,100%);position:relative;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.modal-x{position:absolute;top:12px;right:14px;width:38px;height:38px;border-radius:50%;border:0;background:rgba(255,255,255,.2);color:#fff;font-size:24px;cursor:pointer;z-index:2}
.modal-head{padding:22px 26px;color:#fff}
.modal-head.jee{background:linear-gradient(135deg,var(--jee),var(--navy))}
.modal-head.neet{background:linear-gradient(135deg,#14a874,var(--neet))}
.modal-head span{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.85}
.modal-head h3{font-size:24px;margin-top:4px}
.pages{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:22px}
@media (max-width:900px){.pages{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.pages{grid-template-columns:1fr}}
.paper{background:#fff;border-radius:6px;aspect-ratio:1/1.414;padding:18px;box-shadow:0 4px 14px rgba(0,0,0,.08);position:relative;overflow:hidden;font-size:13px;border-top:4px solid var(--navy)}
.paper .p-tag{font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--saffron-deep);margin-bottom:8px}
.paper h4{font-size:15px;margin-bottom:8px}
.paper ol{padding-left:18px;display:grid;gap:3px}
.paper .sample{color:var(--muted);font-style:italic;margin:8px 0}
.paper .formula{background:var(--jee-soft);border-left:4px solid var(--navy);padding:8px 10px;border-radius:6px;font-weight:600;margin:10px 0}
.paper .trap{background:#fdecec;border-left:4px solid #d64545;padding:8px 10px;border-radius:6px;margin-top:10px}
.paper .avg{font-size:12.5px;color:var(--muted);margin-top:6px}
.big-bars{display:flex;gap:6px;align-items:flex-end;height:110px;border-bottom:2px solid var(--line);padding-bottom:2px}
.big-bars div{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;position:relative}
.big-bars span{width:100%;background:linear-gradient(var(--navy-2),var(--navy));color:#fff;font-weight:700;font-size:12px;text-align:center;border-radius:5px 5px 0 0;padding-top:2px}
.big-bars div:last-child span{background:linear-gradient(#ffa940,var(--saffron))}
.big-bars em{position:absolute;bottom:-20px;font-size:10.5px;font-style:normal;color:var(--muted)}
.big-bars + .avg{margin-top:26px}
.paper.locked .lines{filter:blur(3px);display:grid;gap:10px;padding-top:10px}
.paper.locked .lines i{display:block;height:9px;background:#d8e0ec;border-radius:4px}
.paper.locked .lines i:nth-child(3n){width:70%} .paper.locked .lines i:nth-child(4n){width:85%;background:#ffd9ad}
.paper .lock{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;background:linear-gradient(rgba(255,255,255,.55),rgba(255,255,255,.92));padding:16px}
.paper .lock > div{font-size:34px}
.small-link{font-size:12.5px;color:var(--navy);font-weight:600}
.paper.free-full{display:flex;align-items:center;justify-content:center;text-align:center;border-top-color:var(--green)}
.paper.free-full p{color:var(--muted);margin:6px 0 12px}
.paper{aspect-ratio:auto;min-height:380px}

/* ================= IMAGES ================= */
.hero{background:
    linear-gradient(90deg,rgba(6,29,77,.92) 0%,rgba(11,61,145,.55) 55%,rgba(6,29,77,.25) 100%),
    url("/assets/img/hero-bg.jpg") center/cover no-repeat,
    var(--navy-deep)}
.hero::after{opacity:.04}
.pcard .top{position:relative;padding-right:96px;min-height:110px}
.top-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:76px;height:auto;filter:drop-shadow(0 6px 10px rgba(0,0,0,.25));transition:transform .25s}
.pcard:hover .top-icon{transform:translateY(-50%) rotate(-6deg) scale(1.08)}
.top-icon.photo-icon{width:84px;height:64px;object-fit:cover;border-radius:10px;border:2px solid rgba(255,255,255,.6)}
.pcard.featured .top-icon{top:calc(50% + 8px)}
.lead-img{width:120px;height:120px;object-fit:cover;border-radius:14px;margin-bottom:16px;border:3px solid rgba(255,255,255,.25);box-shadow:0 10px 24px rgba(0,0,0,.3);transform:rotate(-4deg)}
.exam-card.has-img{padding-top:0!important}
.exam-img{display:block;width:calc(100% + 68px);max-width:none;margin:0 -34px 22px;height:200px;object-fit:cover}
.exam-card.has-img[style] .exam-img{width:calc(100% + 48px);margin:0 -24px 16px;height:150px}
.notes-head-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center}
.notes-cover{width:100%;border-radius:18px;box-shadow:0 24px 50px rgba(0,0,0,.35);transform:rotate(2deg);border:4px solid rgba(255,255,255,.15)}
@media (max-width:860px){.notes-head-grid{grid-template-columns:1fr}.notes-cover{max-width:380px}}

/* ================= HERO VIDEO ================= */
.hero.has-video{background:var(--navy-deep) url("/assets/video/hero-poster.jpg") center/cover no-repeat}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:0;transition:opacity .8s}
.hero-video.ready{opacity:1}
.hero-shade{position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(6,29,77,.94) 0%,rgba(6,29,77,.78) 42%,rgba(11,61,145,.35) 75%,rgba(6,29,77,.25) 100%),
             linear-gradient(0deg,rgba(6,29,77,.85) 0%,transparent 35%)}
.hero.has-video .hero-visual{display:flex;align-items:flex-end;justify-content:flex-end;min-height:420px}
.hero.has-video .countdown-card{position:static}
@media (max-width:900px){
  .hero-shade{background:linear-gradient(180deg,rgba(6,29,77,.75) 0%,rgba(6,29,77,.9) 60%,rgba(6,29,77,.95) 100%)}
  .hero.has-video .hero-visual{min-height:0;justify-content:flex-start}
}
.about-photo img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:24px;box-shadow:var(--shadow-lg);border:6px solid #fff}
.coming-soon{display:flex;align-items:center;gap:22px;flex-wrap:wrap;background:linear-gradient(135deg,var(--saffron-soft),#fff);border:2px dashed #f2b56b;border-radius:20px;padding:26px 28px}
.coming-soon .cs-icon{font-size:44px}
.coming-soon > div:nth-child(2){flex:1;min-width:240px}
.coming-soon h3{font-size:21px;margin-bottom:4px}
.coming-soon p{color:var(--muted)}