/* =========================================================
   SkillDana — design system
   Layout idea: calm white pages, one navy band per page, orange only for actions.
   Type: Anek Bangla (display) · Hind Siliguri (body) · Manrope (latin UI/numbers)
   ========================================================= */
:root{
  --navy:#0E2A5C; --navy-2:#0A1F45; --navy-3:#163A7A; --blue:#2457D6; --sky:#EEF3FC;
  --orange:#F26A1B; --orange-2:#DD5A0E; --orange-soft:#FFF2EA; --orange-line:#FBD3BC;
  --ink:#16213A; --muted:#5A6478; --faint:#8A93A6; --line:#E3E7EE; --soft:#F7F8FA; --bg:#FFFFFF;
  --green:#15803D; --green-soft:#E9F7EF; --red:#C2410C; --wa:#1FAF54;
  --radius:14px; --radius-lg:18px;
  --shadow:0 1px 2px rgba(14,42,92,.05),0 4px 14px rgba(14,42,92,.05);
  --shadow-lg:0 2px 6px rgba(14,42,92,.06),0 18px 40px rgba(14,42,92,.10);
  --f-display:'Anek Bangla','Hind Siliguri',system-ui,sans-serif;
  --f-body:'Hind Siliguri','Manrope',system-ui,sans-serif;
  --f-en:'Manrope','Hind Siliguri',system-ui,sans-serif;
  --font:var(--f-body); --font-en:var(--f-en);
  --wrap:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--f-body);color:var(--ink);background:var(--bg);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--navy)}
h1,h2,h3,h4{font-family:var(--f-display);color:var(--navy);line-height:1.22;margin:0 0 .45em;font-weight:600;letter-spacing:-.005em;text-wrap:balance}
p{margin:0 0 1em}
.en{font-family:var(--f-en)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.ic{width:20px;height:20px;flex:none;display:inline-block;vertical-align:middle}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:6px}
::selection{background:var(--orange-soft)}

/* progress */
.sd-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--orange);z-index:100}

/* offer bar */
.topbar{background:var(--navy-2);color:#DCE4F5;font-size:14.5px}
.topbar .wrap{display:flex;gap:6px 14px;align-items:center;justify-content:center;flex-wrap:wrap;padding-block:8px;text-align:center}
.topbar code{background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.35);color:#fff;padding:0 8px;border-radius:6px;font-family:var(--f-en);font-weight:700;letter-spacing:.06em}
.topbar a{color:#FFB98F;font-weight:600}
.topbar a:hover{color:#fff}

/* header */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid transparent;transition:border-color .2s}
.header.scrolled{border-color:var(--line)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px}
.brand img{height:44px;width:auto}
.brand .txt{font-family:var(--f-en);font-weight:800;font-size:21px;color:var(--navy)}
.nav{display:flex;align-items:center;gap:2px}
.nav a{color:var(--ink);font-weight:500;font-size:16px;padding:8px 14px;border-radius:8px}
.nav a:hover{color:var(--navy);background:var(--soft)}
.nav a.active{color:var(--orange-2)}
.nav .nav-login{display:inline-flex;align-items:center;gap:6px}
.nav .btn{margin-left:10px}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;color:var(--navy);cursor:pointer;place-items:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;cursor:pointer;font-family:var(--f-body);font-weight:600;font-size:16.5px;line-height:1.2;padding:13px 22px;border-radius:10px;transition:background .15s,border-color .15s,color .15s,transform .15s;text-align:center;white-space:nowrap}
.btn .ic{width:18px;height:18px}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-2);color:#fff}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff}.btn-navy:hover{background:var(--navy-3);color:#fff}
.btn-wa{background:var(--wa);color:#fff}.btn-wa:hover{background:#178f44;color:#fff}
.btn-sm{padding:9px 15px;font-size:15px;border-radius:8px}
.btn-block{width:100%}
.btn .arrow{transition:transform .15s}.btn:hover .arrow{transform:translateX(3px)}
.btn:active{transform:translateY(1px)}

/* labels */
.kicker{display:inline-flex;align-items:center;gap:10px;color:var(--orange-2);font-weight:600;font-size:15px;margin-bottom:10px}
.kicker:before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--soft);border:1px solid var(--line);color:var(--ink);font-weight:500;font-size:14.5px;padding:5px 12px;border-radius:999px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:#16A34A;box-shadow:0 0 0 3px rgba(22,163,74,.15)}

/* hero */
.hero{position:relative;padding-block:64px 72px;background:linear-gradient(180deg,#fff 0%,#fff 60%,var(--soft) 100%);overflow:hidden}
.hero .grid-bg{position:absolute;right:0;top:0;width:55%;height:100%;background-image:radial-gradient(rgba(14,42,92,.12) 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(90deg,transparent,#000 40%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(36px,5.2vw,60px);font-weight:700;margin:18px 0 12px;letter-spacing:-.015em}
.grad,.hl{color:var(--orange)}
.rotator{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;font-family:var(--f-display);font-size:clamp(21px,2.4vw,27px);font-weight:600;color:var(--ink);margin-bottom:14px}
.rotator .words{display:inline-grid;font-family:var(--f-en);font-weight:800;color:var(--navy);border-bottom:3px solid var(--orange);line-height:1.3;overflow:hidden;height:1.3em}
.rotator .words span{grid-area:1/1;white-space:nowrap;opacity:0;transform:translateY(100%);transition:opacity .4s,transform .4s}
.rotator .words span.on{opacity:1;transform:translateY(0)}
.rotator .words span.out{opacity:0;transform:translateY(-100%)}
.lead{font-size:18.5px;color:var(--muted);max-width:600px}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 22px}
.chips{display:flex;flex-wrap:wrap;gap:8px 18px}
.chips span{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;color:var(--ink)}
.chips span:before{content:"";width:16px;height:16px;border-radius:50%;background:var(--green-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315803D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/10px no-repeat}
.hero-visual{position:relative;max-width:540px;width:100%;margin-left:auto}
.hero-visual .frame{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/4.4;background:var(--sky);box-shadow:var(--shadow-lg)}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover}
.hero-visual .ring{position:absolute;right:-16px;bottom:-16px;width:62%;height:62%;border:2px solid var(--orange-line);border-radius:var(--radius-lg);z-index:-1}
.badge-float{position:absolute;z-index:2;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:10px;min-width:0}
.badge-float i{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:var(--sky);color:var(--navy);flex:none}
.badge-float i .ic{width:19px;height:19px}
.badge-float b{display:block;font-size:14.5px;color:var(--navy);line-height:1.25;font-weight:600}
.badge-float small{display:block;font-size:12.5px;color:var(--muted);line-height:1.25}
.badge-float.b1{left:-28px;top:9%}
.badge-float.b2{right:-24px;top:46%}
.badge-float.b3{left:-14px;bottom:7%}

/* sections */
.section{padding-block:92px}
.section.soft{background:var(--soft)}
.section.navy{background:var(--navy);color:#C9D4EC}
.section.navy h2,.section.navy h3{color:#fff}
.sec-head{max-width:760px;margin:0 0 44px}
.sec-head h2{font-size:clamp(28px,3.4vw,42px)}
.sec-head p{color:var(--muted);font-size:17.5px;margin:0}
.sec-head.center{text-align:center;margin-inline:auto}
.sec-head.center .kicker{justify-content:center}
.sec-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.sec-row .sec-head{margin:0}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:border-color .2s,box-shadow .2s,transform .2s}
.card:hover{border-color:#CDD5E3;box-shadow:var(--shadow-lg)}
.pad{padding:26px 24px}

/* steps */
.steps{counter-reset:s}
.step{position:relative;padding:28px 24px}
.step .num{font-family:var(--f-en);font-weight:300;font-size:44px;line-height:1;color:var(--orange);margin-bottom:18px;letter-spacing:-.02em}
.step h3{font-size:21px}
.step p{color:var(--muted);margin:0;font-size:16px}
.section.navy .step{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
.section.navy .step:hover{background:rgba(255,255,255,.07);box-shadow:none}
.section.navy .step p{color:#B9C6E2}
.section.navy .kicker{color:#FFB98F}
.section.navy .sec-head p{color:#B9C6E2}
.icon{width:46px;height:46px;border-radius:11px;display:grid;place-items:center;background:var(--sky);color:var(--navy);margin-bottom:16px}
.icon .ic{width:22px;height:22px}
.feature h3{font-size:19px}
.feature p{color:var(--muted);font-size:16px;margin:0}

/* course card */
.course{display:flex;flex-direction:column;overflow:hidden}
.course:hover{transform:translateY(-3px)}
.course .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--sky)}
.course .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.course:hover .thumb img{transform:scale(1.04)}
.course .thumb .cat{position:absolute;left:12px;top:12px;background:#fff;color:var(--navy);font-family:var(--f-en);font-weight:700;font-size:12px;letter-spacing:.02em;padding:4px 10px;border-radius:6px}
.course .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.badges{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:600;border-radius:6px;padding:3px 9px;font-family:var(--f-body);line-height:1.5}
.badge.free{background:var(--green-soft);color:var(--green)}
.badge.live{background:#FDECEC;color:#B42318}
.badge.live:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.soon{background:var(--sky);color:var(--navy-3)}
.badge.paid{background:var(--orange-soft);color:var(--orange-2)}
.badge.rec{background:var(--soft);color:var(--muted);border:1px solid var(--line)}
.course h3{font-size:20px;margin-bottom:6px}
.course h3 a{color:var(--navy)}
.course h3 a:hover{color:var(--blue)}
.course p{color:var(--muted);font-size:15.5px;flex:1;margin-bottom:14px}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:14px;color:var(--muted);margin-bottom:16px}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta .ic{width:16px;height:16px;color:var(--faint)}
.course .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:14px}
.price{font-family:var(--f-en);font-weight:800;color:var(--navy);font-size:20px;letter-spacing:-.01em}
.price del{color:var(--faint);font-weight:500;font-size:15px;margin-right:6px}
.price.free{color:var(--green)}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare > div{border-radius:var(--radius);padding:26px 24px;border:1px solid var(--line);background:#fff}
.compare .good{border-color:#BFE3CC;background:linear-gradient(180deg,#F6FCF8,#fff)}
.compare h3{font-size:19px;margin-bottom:16px}
.compare ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.compare li{display:flex;gap:12px;align-items:flex-start;font-size:16.5px}
.compare li i{font-style:normal;flex:none;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;margin-top:2px}
.compare li i .ic{width:13px;height:13px;stroke-width:3}
.compare .bad i{background:#FDECEC;color:#B42318}
.compare .good i{background:var(--green-soft);color:var(--green)}

/* mentor */
.mentor{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.mentor .photo{position:relative;max-width:420px;width:100%;margin:0 auto}
.mentor .photo img,.mentor .photo .ph{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--radius-lg)}
.mentor .photo .ph{display:grid;place-items:center;background:var(--navy);color:#fff;font-family:var(--f-en);font-size:110px;font-weight:800}
.mentor .photo:after{content:"";position:absolute;left:-16px;top:-16px;width:45%;height:45%;border:2px solid var(--orange-line);border-radius:var(--radius-lg);z-index:-1}
.mentor .role{color:var(--muted);font-weight:500;margin-bottom:14px;font-family:var(--f-en);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 22px}
.tags span{background:#fff;color:var(--navy);border:1px solid var(--line);border-radius:8px;padding:4px 12px;font-size:14px;font-weight:600;font-family:var(--f-en)}

/* testimonials */
.quote p{font-size:16.5px;color:var(--ink)}
.quote .who{display:flex;align-items:center;gap:12px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.quote .who img,.quote .who .av{width:44px;height:44px;border-radius:50%;object-fit:cover;background:var(--sky);display:grid;place-items:center;font-weight:700;color:var(--navy)}
.quote .who b{display:block;color:var(--navy);line-height:1.2}.quote .who small{color:var(--muted)}

/* faq */
.faq{max-width:860px;display:grid;gap:10px}
.sec-head.center + .faq{margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px}
.faq details[open]{border-color:#CDD5E3}
.faq summary{cursor:pointer;list-style:none;padding:17px 52px 17px 20px;font-weight:600;color:var(--navy);position:relative;font-size:16.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"";position:absolute;right:20px;top:50%;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary:after{transform:translateY(-30%) rotate(-135deg)}
.faq .ans{padding:0 20px 18px;color:var(--muted)}

/* cta band */
.cta{position:relative;background:var(--navy);border-radius:var(--radius-lg);padding:48px 44px;color:#C9D4EC;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;overflow:hidden}
.cta:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:20px 20px;mask-image:linear-gradient(90deg,transparent 40%,#000);pointer-events:none}
.cta h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:6px;position:relative}
.cta p{margin:0;position:relative}
.cta .btn{position:relative}

/* inner page hero */
.page-hero{background:var(--soft);border-bottom:1px solid var(--line);padding-block:56px 48px;position:relative;overflow:hidden}
.page-hero h1{font-size:clamp(30px,4.2vw,48px)}
.crumbs{font-size:14px;color:var(--faint);margin-bottom:12px}.crumbs a{color:var(--muted)}

/* course detail */
.cd{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:44px;align-items:start}
.cd .cover{border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/9;margin:24px 0 0;background:var(--sky)}
.cd .cover img{width:100%;height:100%;object-fit:cover}
.info{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:22px}
.info div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.info b{display:flex;align-items:center;gap:7px;color:var(--faint);font-size:13px;font-weight:600}
.info b .ic{width:16px;height:16px}
.info span{color:var(--ink);font-size:15px;font-weight:500}
.enroll{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:26px}
.enroll h3{font-size:21px;margin-bottom:2px}
.enroll .price{font-size:30px;margin:4px 0 16px}
.checklist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px}
.checklist li{position:relative;padding-left:30px;font-weight:500}
.checklist li:before{content:"";position:absolute;left:0;top:5px;width:19px;height:19px;border-radius:50%;background:var(--green-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315803D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/11px no-repeat}
.modules{display:grid;gap:10px}
.modules details{background:#fff;border:1px solid var(--line);border-radius:12px}
.modules summary{cursor:pointer;list-style:none;padding:15px 18px;font-weight:600;color:var(--navy);display:flex;gap:12px;align-items:center}
.modules summary::-webkit-details-marker{display:none}
.modules summary .n{flex:none;width:28px;height:28px;border-radius:7px;display:grid;place-items:center;background:var(--sky);font-family:var(--f-en);font-size:13px;font-weight:700}
.modules ul{margin:0;padding:0 18px 14px 58px;color:var(--muted)}
.prose{color:#2A3550}.prose h2,.prose h3{margin-top:1.2em}
.block{margin-top:48px}.block > h2{font-size:26px;margin-bottom:18px}

/* forms */
.form{display:grid;gap:14px}
.field label{display:block;font-weight:600;color:var(--ink);font-size:15px;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;padding:12px 14px;border:1px solid #D3DAE5;border-radius:10px;background:#fff;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(36,87,214,.12)}
.field .err{color:#B42318;font-size:14px;margin-top:4px}
.pay{background:var(--orange-soft);border:1px solid var(--orange-line);border-radius:12px;padding:14px 16px;font-size:15px}
.pay b{color:var(--navy)}.pay .num{font-family:var(--f-en);font-weight:800;font-size:18px;color:var(--orange-2);letter-spacing:.02em}
.hp{position:absolute;left:-9999px;opacity:0}
.note{font-size:13.5px;color:var(--faint);text-align:center;margin:0}
.alert{background:#FEF3F2;border:1px solid #FECDCA;color:#B42318;border-radius:10px;padding:10px 14px;font-size:15px}

/* thank you */
.check{width:84px;height:84px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;color:#fff;background:var(--green);font-size:40px}
.steps-list{list-style:none;padding:0;margin:22px auto;max-width:560px;text-align:left;display:grid;gap:10px}
.steps-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px 14px 58px;position:relative;font-weight:500}
.steps-list li b{position:absolute;left:14px;top:12px;width:30px;height:30px;border-radius:8px;display:grid;place-items:center;color:#fff;background:var(--navy);font-family:var(--f-en);font-size:14px}

/* contact */
.contact-card .icon{margin-bottom:14px}
.contact-card h3{font-size:18px}
.contact-card a{font-weight:600;word-break:break-word}

/* footer */
.footer{background:var(--navy-2);color:#AEBBD8;padding-block:60px 24px}
.footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer h4{color:#fff;font-size:16px;margin-bottom:14px;font-family:var(--f-body)}
.footer a{color:#AEBBD8}.footer a:hover{color:#fff}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:15.5px}
.footer li{display:flex;align-items:flex-start;gap:8px}
.footer li .ic{width:17px;height:17px;margin-top:4px;color:#7F8FB3}
.footer .brand img{height:42px;filter:brightness(0) invert(1)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#8A99BC}
.social{display:flex;gap:8px;margin-top:16px}
.social a{width:38px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.14);display:grid;place-items:center;color:#DCE4F5}
.social a:hover{background:rgba(255,255,255,.08);color:#fff}
.social .ic{width:18px;height:18px}

/* floating */
.wa-float{position:fixed;right:max(18px,env(safe-area-inset-right,0px));bottom:max(18px,env(safe-area-inset-bottom,0px));z-index:60;width:54px;height:54px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 8px 22px rgba(31,175,84,.35)}
.wa-float svg{width:28px;height:28px;fill:#fff}
.to-top{position:fixed;right:max(23px,env(safe-area-inset-right,0px));bottom:calc(max(18px,env(safe-area-inset-bottom,0px)) + 66px);z-index:60;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--navy);box-shadow:var(--shadow);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s;display:grid;place-items:center}
.to-top.show{opacity:1;pointer-events:auto}

/* reveal (subtle) */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.06s}.js .reveal.d2{transition-delay:.12s}.js .reveal.d3{transition-delay:.18s}.js .reveal.d4{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}}

/* course page marketing */
.countbox{margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.countbox > span{font-weight:600;color:var(--navy);display:inline-flex;align-items:center;gap:6px}
.countdown.big{display:flex;gap:6px}
.countdown.big span{background:var(--navy);color:#B9C6E2;border-radius:8px;padding:5px 9px;text-align:center;font-size:11.5px;min-width:56px}
.countdown.big b{display:block;color:#fff;font-family:var(--f-en);font-size:19px;line-height:1.2}
.proof{margin-top:14px;display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:15px}
.proof .ic{color:var(--orange)}
.share{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.share a,.share button{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 11px;font:inherit;font-weight:600;color:var(--navy);cursor:pointer}
.share .ic{width:15px;height:15px}
.share a:hover,.share button:hover{border-color:var(--navy)}
.sticky-cta{display:none}

/* auth */
.auth-wrap{padding-block:56px 72px}
.auth-card{max-width:440px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:32px 28px}
.auth-card h1{font-size:27px;margin-bottom:6px}
.auth-card .alert{margin-bottom:12px}
.muted{color:var(--muted)}
.check-row{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--muted)}
.switch{text-align:center;margin:20px 0 0;color:var(--muted)}
.switch a{font-weight:600}

/* student dashboard */
.dash-body{background:var(--soft)}
.dash{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}
.dash-side{position:sticky;top:0;height:100vh;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:22px 14px}
.dash-side .brand{padding:0 8px}
.dash-side .brand img{height:40px}
.dash-nav{display:grid;gap:2px;margin-top:28px}
.dash-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;color:var(--ink);font-weight:500;font-size:16px}
.dash-nav a svg{width:19px;height:19px;flex:none;color:var(--faint)}
.dash-nav a:hover{background:var(--soft)}
.dash-nav a.active{background:var(--sky);color:var(--navy);font-weight:600}
.dash-nav a.active svg{color:var(--navy)}
.dash-side-foot{margin-top:auto;display:grid;gap:8px;font-size:15px;border-top:1px solid var(--line);padding-top:14px}
.dash-side-foot a{color:var(--navy);font-weight:600;padding:4px 12px}
.dash-side-foot button{background:none;border:1px solid var(--line);border-radius:9px;padding:9px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer;width:100%}
.dash-main{min-width:0;padding:0 clamp(16px,3vw,40px) 44px}
.dash-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 18px}
.dash-top .hi{font-size:19px;font-family:var(--f-display)}
.dash-top .hi b{color:var(--navy)}
.dash-top-r{display:flex;align-items:center;gap:10px}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:#fff;font-family:var(--f-en);font-weight:700;font-size:14px}
.dash-content{max-width:1020px}
.flash{background:var(--green-soft);border:1px solid #BFE3CC;color:#14532D;border-radius:10px;padding:10px 14px;margin-bottom:16px;max-width:1020px}
.profile-bar{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:18px;color:var(--ink)}
.profile-bar b{display:block;color:var(--navy)}.profile-bar small{color:var(--blue);font-weight:600}
.profile-bar .ring{--p:0;width:46px;height:46px;border-radius:50%;flex:none;display:grid;place-items:center;font-family:var(--f-en);font-size:12px;font-weight:700;color:var(--navy);background:radial-gradient(closest-side,#fff 78%,transparent 80% 100%),conic-gradient(var(--orange) calc(var(--p)*1%),var(--line) 0)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:28px}
.stat{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;min-height:108px;display:flex;flex-direction:column;justify-content:space-between}
.stat span{color:var(--muted);font-size:14.5px;font-weight:500}
.stat b{font-family:var(--f-en);font-size:30px;color:var(--navy);line-height:1;font-weight:700}
.stat i{position:absolute;right:14px;top:14px;color:var(--faint)}
.stat i .ic{width:19px;height:19px}
.dhead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.dhead h2{font-size:21px;margin:0}
.dhead a{font-weight:600;font-size:15px}
.dcourse{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:12px}
.dthumb{flex:none;width:196px;aspect-ratio:16/10;border-radius:10px;overflow:hidden;background:var(--sky)}
.dthumb img{width:100%;height:100%;object-fit:cover}
.dinfo{min-width:0;flex:1}
.dcat{font-size:13.5px;color:var(--faint)}
.dinfo h3{font-size:19px;margin:2px 0 8px}
.dinfo h3 a{color:var(--navy)}
.nextclass{font-size:14.5px;color:var(--ink);margin:6px 0 10px;display:flex;align-items:center;flex-wrap:wrap;gap:4px 8px}
.nextclass .ic{width:16px;height:16px;color:var(--faint)}
.nextclass .countdown{color:var(--orange-2);font-weight:600}
.dactions{display:flex;flex-wrap:wrap;gap:8px}
.resources{margin-top:14px;border-top:1px solid var(--line);padding-top:12px}
.resources ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px}
.resources li{display:flex;align-items:center;gap:10px}
.resources .n{width:24px;height:24px;border-radius:6px;background:var(--sky);display:grid;place-items:center;font-size:12px;font-family:var(--f-en);font-weight:700;color:var(--navy);flex:none}
.empty{background:#fff;border:1px dashed #CDD5E3;border-radius:var(--radius);padding:36px 20px;text-align:center}
.empty .ic{width:36px;height:36px;color:var(--faint);margin:0 auto 10px}
.classrow{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px}
.classrow .date{flex:none;width:60px;height:60px;border-radius:12px;background:var(--navy);color:#fff;display:grid;place-items:center;text-align:center;line-height:1.05}
.classrow .date b{font-family:var(--f-en);font-size:22px;display:block}
.classrow .date span{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:#B9C6E2}
.classrow h3{font-size:17px;margin:0 0 4px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.field input:disabled{background:var(--soft);color:var(--muted)}
.dash-bottom{display:none}

/* ======== responsive ======== */
@media (max-width:1024px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer .cols{grid-template-columns:1fr 1fr}
  .cd{grid-template-columns:1fr}
  .enroll{position:static}
  .cd-hero{display:flex;flex-direction:column;align-items:stretch;gap:0}
  .cd-left{display:contents}
  .cd-left .crumbs{order:1}.cd-left .badges{order:2}.cd-left h1{order:3}.cd-left .lead{order:4}
  .cd-left .cover{order:5;margin-top:18px}
  .cd-left .info{order:6}.cd-left .countbox{order:7}.cd-left .proof{order:8}
  .cd-hero .enroll{order:9;margin-top:20px;scroll-margin-top:84px}
  .cd-left .share{order:10}
  .sticky-cta{display:flex;transform:translateY(110%);transition:transform .25s ease;position:fixed;left:0;right:0;bottom:0;z-index:70;align-items:center;justify-content:space-between;gap:12px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(14,42,92,.08);padding:10px max(16px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
  .sticky-cta div{min-width:0}
  .sticky-cta b{display:block;color:var(--navy);font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .sticky-cta span{font-family:var(--f-en);font-weight:800;color:var(--orange-2)}
  .sticky-cta.show{transform:none}
  body:has(.sticky-cta.show) .wa-float{bottom:calc(82px + env(safe-area-inset-bottom,0px))}
  body:has(.sticky-cta.show) .to-top{bottom:calc(146px + env(safe-area-inset-bottom,0px))}
  body:has(.sticky-cta) .footer{padding-bottom:96px}
}
@media (max-width:900px){
  .hero .wrap,.mentor,.about-hero{grid-template-columns:1fr}
  .hero-visual{margin:8px auto 0;max-width:460px}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .menu-btn{display:grid}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 18px;display:none;box-shadow:0 16px 24px rgba(14,42,92,.08)}
  .nav.open{display:flex}
  .nav a{padding:12px 6px;border-bottom:1px solid var(--line);border-radius:0}
  .nav .btn{margin:12px 0 0;border-radius:10px;border-bottom:0}
  .sec-row{flex-direction:column;align-items:flex-start}
  .cta{grid-template-columns:1fr;padding:36px 26px}
  .dash{grid-template-columns:1fr}
  .dash-side{display:none}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dash-main{padding-bottom:96px}
  .dash-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px))}
  .dash-bottom a{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11.5px;font-weight:600;color:var(--faint);padding:6px 2px;border-radius:8px}
  .dash-bottom a svg{width:22px;height:22px}
  .dash-bottom a.active{color:var(--navy);background:var(--sky)}
  .dash-top .btn{display:none}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
  .section{padding-block:60px}
  .hero{padding-block:36px 52px}
  .hero .grid-bg{width:100%;opacity:.6}
  .hero h1{margin-top:14px}
  .lead{font-size:17px}
  .hero .actions .btn{flex:1 1 100%}
  .hero-visual{max-width:360px}
  .hero-visual .ring{display:none}
  .badge-float{padding:8px 10px;border-radius:10px;gap:8px}
  .badge-float i{width:30px;height:30px}
  .badge-float b{font-size:13px}.badge-float small{font-size:11.5px}
  .badge-float.b1{left:-6px}.badge-float.b2{right:-6px}.badge-float.b3{left:6px}
  .g3,.g2,.g4,.compare,.checklist{grid-template-columns:1fr}
  .sec-head{margin-bottom:28px}
  .topbar{font-size:13px}
  .topbar .wrap{padding-block:6px;gap:2px 8px;line-height:1.45}
  .header .wrap{min-height:62px}
  .brand img{height:38px}
  .info{grid-template-columns:1fr 1fr;gap:8px}
  .info div{padding:10px 12px}
  .info span{font-size:14px}
  .page-hero{padding-block:34px 30px}
  .page-hero h1{font-size:30px}
  .enroll{padding:20px 18px}
  .pad,.step{padding:22px 18px}
  .course .body{padding:16px}
  .mentor .photo{max-width:300px}
  .mentor .photo:after{display:none}
  .wa-float{width:50px;height:50px}
  .faq summary{padding:15px 46px 15px 16px}
  .countdown.big span{min-width:0;flex:1;padding:5px 4px}
  .countdown.big b{font-size:17px}
  .footer{padding-block:44px 22px}
  .footer .cols{grid-template-columns:1fr}
  .dcourse{flex-direction:column}
  .dthumb{width:100%}
  .cta{padding:30px 20px}
}
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq-wrap .faq{max-width:none}
@media (max-width:900px){.faq-wrap{grid-template-columns:1fr;gap:0}}
.check .ic.big{width:40px;height:40px;stroke-width:2.6}

/* ===== course page: phone layout (Tutor-style order: title → cover → facts → enroll → content) ===== */
@media (max-width:640px){
  .cd-hero .crumbs{display:none}
  .cd-hero .badges{gap:6px}
  .cd-hero h1{font-size:27px;line-height:1.25;margin:10px 0 6px}
  .cd-hero .lead{font-size:16px;margin:0}
  .cd-left .cover{border-radius:14px;margin-top:16px}
  .cd-hero .info{margin-top:14px}
  .info b{font-size:12px}
  .info span{font-size:14px;line-height:1.4;display:block;margin-top:2px}
  .cd-hero .enroll{border-radius:16px;box-shadow:0 10px 30px -12px rgba(14,42,92,.18)}
  .enroll .price{font-size:26px;margin:2px 0 12px}
  .share{margin-top:14px;flex-wrap:nowrap;overflow-x:auto;gap:6px;font-size:13px;scrollbar-width:none}
  .share::-webkit-scrollbar{display:none}
  .share > span{display:none}
  .share a,.share button{flex:none;padding:6px 10px}
  .block h2{font-size:23px}
  .modules summary{padding:13px 14px;gap:10px;font-size:15.5px;line-height:1.35}
  .modules summary small{white-space:nowrap;flex:none}
  .topbar{font-size:12.5px}
  .sticky-cta b{font-size:14px}
}