/* Expert Skills Courses — shared stylesheet */
:root{
  --charcoal:#1f2124; --charcoal-2:#2b2e33; --ink:#12141a;
  --blue:#1e6ed2; --blue-d:#12459a; --sky:#6dc7f0; --sky-l:#a8e0f8;
  --paper:#ffffff; --mist:#f4f7fb; --line:#e3e9f1;
  --text:#1b2430; --muted:#61707f;
  --radius:16px; --shadow:0 10px 34px rgba(18,24,38,.10);
  --wrap:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Poppins',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--text);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;border:0;cursor:pointer;
  font:600 15px/1 'Poppins',sans-serif;padding:14px 26px;border-radius:999px;transition:.18s}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;
  box-shadow:0 8px 22px rgba(30,110,210,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(30,110,210,.42)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-light{background:#fff;color:var(--blue-d);border:2px solid var(--line)}
.btn-light:hover{border-color:var(--blue);color:var(--blue)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%;justify-content:center}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:28px;height:78px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:17px;letter-spacing:.2px}
.brand img{height:52px;width:auto}
.brand span{line-height:1.15}
.brand small{display:block;font-weight:500;font-size:11px;letter-spacing:3px;color:var(--muted)}
.locale{display:inline-flex;align-items:center;gap:8px;margin-left:18px;padding:6px 13px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;font-weight:500;color:var(--muted);
  white-space:nowrap}
.locale img{width:22px;height:auto;border-radius:2px;box-shadow:0 0 0 1px rgba(0,0,0,.08)}
.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{font-weight:500;font-size:15px;color:var(--text);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--blue);border-color:var(--blue)}
.burger{display:none;margin-left:auto;background:none;border:0;font-size:26px;cursor:pointer;color:var(--text)}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;
  background:radial-gradient(900px 520px at 78% 12%,#22447e 0%,transparent 60%),
             radial-gradient(700px 500px at 12% 92%,#0d3a63 0%,transparent 60%),
             linear-gradient(140deg,#25282d 0%,#1a1c20 55%,#141619 100%)}
.hero:after{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.03) 0 2px,transparent 2px 140px)}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;
  gap:52px;align-items:center;padding:74px 0 84px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  letter-spacing:2.2px;text-transform:uppercase;color:var(--sky);
  border:1px solid rgba(109,199,240,.4);border-radius:999px;padding:8px 18px;margin-bottom:22px}
.hero h1{font-size:clamp(2.1rem,4.6vw,3.5rem);line-height:1.1;margin:0 0 18px;font-weight:700;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--sky),#fff);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lede{font-size:1.08rem;color:#c9d4e0;max-width:46ch;margin:0 0 26px}
.ticks{list-style:none;margin:0 0 30px;padding:0;display:grid;gap:11px}
.ticks li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:#dde5ee}
.ticks li:before{content:"";flex:0 0 20px;height:20px;margin-top:2px;border-radius:50%;
  background:var(--sky) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2312141a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{display:flex;justify-content:center}
.hero-art img{width:min(430px,100%);filter:drop-shadow(0 26px 46px rgba(0,0,0,.55))}
.stats{display:flex;gap:34px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.13);
  padding:26px 0 40px;position:relative;z-index:2}
.stat b{display:block;font-size:1.85rem;color:#fff;line-height:1.1}
.stat span{font-size:13px;color:#93a3b4;letter-spacing:.4px}

/* ---------- sections ---------- */
.sec{padding:78px 0}
.sec-mist{background:var(--mist)}
.sec-head{text-align:center;max-width:660px;margin:0 auto 44px}
.sec-head h2{font-size:clamp(1.65rem,3.2vw,2.3rem);margin:0 0 12px;font-weight:700;letter-spacing:-.4px}
.sec-head p{color:var(--muted);margin:0;font-size:1.02rem}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:2.4px;text-transform:uppercase;
  color:var(--blue);display:block;margin-bottom:10px}

/* ---------- filter tabs ---------- */
.tabs{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:38px}
.tab{background:#fff;border:1px solid var(--line);color:var(--muted);border-radius:999px;
  padding:11px 24px;font:600 14px/1 'Poppins',sans-serif;cursor:pointer;transition:.16s}
.tab:hover{border-color:var(--blue);color:var(--blue)}
.tab.on{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(30,110,210,.28)}

/* ---------- course cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#cfdcec}
.thumb{aspect-ratio:16/9;display:block;position:relative;overflow:hidden;background:var(--mist)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.card:hover .thumb img{transform:scale(1.04)}
.thumb .tag{position:absolute;left:14px;top:14px;background:rgba(0,0,0,.42);color:#fff;
  font-size:11px;font-weight:600;letter-spacing:1.3px;text-transform:uppercase;
  padding:6px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{margin:0;font-size:1.16rem;font-weight:700;line-height:1.32}
.card-body p{margin:0;color:var(--muted);font-size:14.5px;flex:1}
.meta{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);
  border-top:1px solid var(--line);padding-top:14px}
.meta i{font-style:normal;color:var(--blue);font-weight:600}
.durations{display:flex;gap:7px;flex-wrap:wrap}
.pill{font-size:12px;font-weight:600;color:var(--blue-d);background:#e8f1fd;
  border:1px solid #cfe1f8;border-radius:999px;padding:5px 12px}

/* ---------- feature strip ---------- */
.feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px}
.feat .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,var(--blue),var(--blue-d))}
.feat .ic svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8}
.feat h3{margin:0 0 8px;font-size:1.08rem}
.feat p{margin:0;color:var(--muted);font-size:14.5px}

/* ---------- cta band ---------- */
.band{background:linear-gradient(135deg,var(--blue-d),#0b2f6b);color:#fff;border-radius:22px;
  padding:52px 44px;display:flex;gap:32px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.band h2{margin:0 0 8px;font-size:clamp(1.5rem,3vw,2.05rem)}
.band p{margin:0;color:#c5dbf5}

/* ---------- forms ---------- */
.form{display:grid;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:14px 16px;border:1px solid var(--line);
  border-radius:12px;font:400 15px/1.4 'Poppins',sans-serif;background:#fff;color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--blue);
  box-shadow:0 0 0 4px rgba(30,110,210,.12)}
.note{font-size:13px;color:var(--muted);margin:0}
.phone-row{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:10px}
.phone-row select{min-width:0}
.foot-addr{display:flex;gap:10px;align-items:flex-start}
.foot-addr .flag{width:24px;height:auto;border-radius:2px;margin-top:4px;flex:0 0 auto}
.site-foot .foot-addr strong{color:#dbe4ee}
.locked{position:relative}
.lock-note{display:flex;gap:12px;align-items:flex-start;background:#fff8e6;border:1px solid #f2dfa8;
  color:#7a5c12;padding:14px 16px;border-radius:12px;font-size:14px;margin-bottom:18px}
.lock-note svg{width:20px;height:20px;flex:0 0 auto;stroke:#a8801c;fill:none;stroke-width:1.9;margin-top:1px}
.suggest{background:linear-gradient(135deg,#e8f7f0,#d9f0e6);border:1px solid #b7e3d0;
  border-radius:var(--radius);padding:22px;margin-bottom:22px}
.suggest h3{margin:0 0 6px;font-size:1.1rem;color:#0f6b4a}
.suggest p{margin:0 0 14px;font-size:14.5px;color:#2b6b53}
.alert{padding:13px 16px;border-radius:12px;font-size:14px;display:none}
.alert.ok{background:#e7f7ee;color:#15653c;border:1px solid #b7e6cc;display:block}
.alert.err{background:#fdecec;color:#8f2020;border:1px solid #f5c6c6;display:block}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:#98a6b6;padding:60px 0 26px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:38px;margin-bottom:40px}
.site-foot h4{color:#fff;font-size:14px;letter-spacing:1.6px;text-transform:uppercase;margin:0 0 16px}
.site-foot a:hover{color:var(--sky)}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot-brand img{height:74px;margin-bottom:16px}
.foot-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px}

/* ---------- course detail ---------- */
.chero{color:#fff;padding:56px 0;background:linear-gradient(140deg,#25282d,#141619)}
.chero .crumb{font-size:13.5px;color:#8fa0b2;margin-bottom:14px}
.chero .crumb a:hover{color:var(--sky)}
.chero h1{margin:0 0 14px;font-size:clamp(1.8rem,4vw,2.7rem);letter-spacing:-.4px}
.chero p{color:#c3ceda;max-width:62ch;margin:0 0 20px}
.split{display:grid;grid-template-columns:1.7fr 1fr;gap:40px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.panel.sticky{position:sticky;top:100px}
.mods{list-style:none;margin:0;padding:0;counter-reset:m}
.mods li{counter-increment:m;display:flex;gap:15px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15px}
.mods li:last-child{border-bottom:0}
.mods li:before{content:counter(m,decimal-leading-zero);flex:0 0 auto;font-weight:700;color:var(--blue);font-size:14px}
.prose h2{font-size:1.35rem;margin:34px 0 12px}
.prose p{color:#3d4a58}
.price-tag{font-size:1.3rem;font-weight:700;margin:0 0 4px}

/* ---------- responsive ---------- */
@media(max-width:960px){
  .hero-in{grid-template-columns:1fr;padding:56px 0 62px}
  .hero-art{order:-1}
  .hero-art img{width:min(300px,72%)}
  .split{grid-template-columns:1fr}
  .panel.sticky{position:static}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .burger{display:block}
  .nav{position:absolute;left:0;right:0;top:78px;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:10px 24px 20px;border-bottom:1px solid var(--line);display:none}
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:12px;justify-content:center}
  .band{padding:38px 26px;text-align:center;justify-content:center}
  .foot-grid{grid-template-columns:1fr}
  .sec{padding:56px 0}
}