/* =========================================================
   WEBCAMPING — NEURO UI. Тёмная футуристичная тема.
   ========================================================= */
:root{
  /* Палитра */
  --bg:#060814;
  --bg-2:#0a0f22;
  --glass:rgba(255,255,255,.04);
  --glass-2:rgba(255,255,255,.06);
  --stroke:rgba(255,255,255,.09);
  --stroke-2:rgba(255,255,255,.14);
  --txt:#e8ecf8;
  --muted:#8a93b2;
  --faint:#5b6484;

  --violet:#8b5cf6;
  --cyan:#22d3ee;
  --pink:#f472b6;
  --lime:#a3e635;
  --error:#fb7185;

  --grad:linear-gradient(135deg,#8b5cf6 0%,#22d3ee 100%);
  --grad-soft:linear-gradient(135deg,rgba(139,92,246,.22),rgba(34,211,238,.18));
  --grad-text:linear-gradient(100deg,#c4b5fd,#67e8f9,#f9a8d4);

  /* Радиусы / отступы */
  --r-sm:8px; --r-md:14px; --r-lg:20px; --r-xl:28px; --r-full:9999px;
  --s-xs:4px; --s-sm:10px; --s-md:18px; --s-lg:32px; --s-xl:64px;

  --display:"Space Grotesk","Roboto",system-ui,sans-serif;
  --sans:"Inter","Roboto",system-ui,sans-serif;

  --glow:0 0 0 1px var(--stroke),0 20px 60px rgba(0,0,0,.45);
  --glow-accent:0 10px 40px rgba(139,92,246,.35);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);color:var(--txt);line-height:1.6;
  background:var(--bg);-webkit-font-smoothing:antialiased;
  overflow-x:hidden;position:relative;
}
/* Живой aurora-фон */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(50% 45% at 15% 10%,rgba(139,92,246,.28),transparent 60%),
    radial-gradient(45% 40% at 90% 5%,rgba(34,211,238,.20),transparent 60%),
    radial-gradient(60% 50% at 80% 90%,rgba(244,114,182,.16),transparent 60%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.4;
  background-image:linear-gradient(var(--stroke) 1px,transparent 1px),
                   linear-gradient(90deg,var(--stroke) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0,#000,transparent 75%);
          mask-image:radial-gradient(circle at 50% 0,#000,transparent 75%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5{font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.1}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.article-wrap{max-width:820px;margin:0 auto;padding:0 24px}

/* ---------- Кнопки ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;
  font-family:var(--sans);font-weight:600;font-size:16px;border:none;
  transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow .25s,filter .25s}
.btn-primary{background:var(--grad);color:#0a0a12;border-radius:var(--r-full);
  padding:15px 30px;min-height:52px;box-shadow:var(--glow-accent);font-weight:700}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 48px rgba(34,211,238,.45);filter:brightness(1.08)}
.btn-secondary{background:var(--glass-2);color:var(--txt);border:1px solid var(--stroke-2);
  border-radius:var(--r-full);padding:15px 30px;min-height:52px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.btn-secondary:hover{transform:translateY(-3px);border-color:var(--cyan);color:#fff}

/* ---------- Навигация ---------- */
.topnav{display:flex;align-items:center;justify-content:space-between;
  padding:16px 22px;margin-top:20px;position:relative;z-index:50;
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-full);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
.brand{font-family:var(--display);font-weight:700;font-size:20px;display:flex;align-items:center;gap:10px;color:#fff}
.brand .dot{width:34px;height:34px;border-radius:11px;background:var(--grad);display:grid;place-items:center;
  overflow:hidden;font-weight:700;font-size:14px;color:#0a0a12;box-shadow:var(--glow-accent)}
.brand .dot img{width:34px;height:34px;object-fit:cover;border-radius:inherit}
.navlinks{display:flex;gap:28px;align-items:center}
.navlinks a{font-size:15px;font-weight:500;color:var(--muted);transition:color .18s;position:relative}
.navlinks a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--grad);transition:width .25s;border-radius:2px}
.navlinks a:hover,.navlinks a.active{color:#fff}
.navlinks a:hover::after,.navlinks a.active::after{width:100%}
.burger{display:none;font-size:24px;background:none;border:none;color:#fff;cursor:pointer;padding:4px 8px}

/* ---------- HERO ---------- */
.hero{position:relative;padding-bottom:var(--s-xl);overflow:hidden}
.hero-grid{position:relative;z-index:5;display:grid;grid-template-columns:1.1fr .9fr;
  gap:var(--s-xl);align-items:center;padding-top:70px;padding-bottom:30px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-size:13px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;color:var(--cyan);
  background:var(--glass-2);border:1px solid var(--stroke);padding:8px 16px;border-radius:var(--r-full);margin-bottom:22px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime)}
.hero h1{font-size:clamp(34px,5vw,58px);margin-bottom:20px}
.hero h1 em{font-style:normal;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:18px;color:var(--muted);max-width:540px;margin-bottom:var(--s-lg)}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero-stats{display:flex;gap:36px;margin-top:44px;flex-wrap:wrap}
.hero-stats .st strong{font-family:var(--display);font-size:30px;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:block}
.hero-stats .st span{font-size:13px;color:var(--faint)}

.hero-portrait{position:relative;justify-self:center}
.hero-portrait .frame{width:340px;height:420px;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--stroke-2);background:var(--grad-soft);box-shadow:var(--glow);position:relative}
.hero-portrait .frame::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(6,8,20,.75),transparent 55%)}
.hero-portrait .frame img.ph{width:100%;height:100%;object-fit:cover}
.hero-portrait .badge-author{position:absolute;left:-24px;bottom:26px;z-index:2;
  background:var(--glass-2);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid var(--stroke-2);border-radius:var(--r-md);padding:14px 20px;box-shadow:var(--glow)}
.badge-author strong{font-family:var(--display);display:block;font-size:16px;color:#fff}
.badge-author span{font-size:12px;color:var(--cyan)}
.hero-portrait .orb{position:absolute;border-radius:50%;filter:blur(2px);opacity:.9}
.hero-portrait .orb.a{width:60px;height:60px;right:-18px;top:40px;background:radial-gradient(circle,#22d3ee,transparent 70%)}
.hero-portrait .orb.b{width:90px;height:90px;left:-30px;top:-20px;background:radial-gradient(circle,#8b5cf6,transparent 70%)}

/* Удаляем старую волну — на тёмной теме она не нужна */
.curve{display:none}

/* ---------- Основной контент ---------- */
.content{position:relative;z-index:2;padding-top:var(--s-lg)}
section.chips-sec{padding:var(--s-lg) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:var(--s-lg);flex-wrap:wrap}
.sec-head h2{font-size:30px}
.sec-head p{color:var(--muted);font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-family:var(--sans);font-size:14px;font-weight:500;color:var(--muted);
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-full);
  padding:9px 20px;cursor:pointer;transition:all .18s;-webkit-tap-highlight-color:transparent}
.chip:hover{border-color:var(--stroke-2);color:#fff;transform:translateY(-2px)}
.chip.active{background:var(--grad);color:#0a0a12;border-color:transparent;font-weight:700;box-shadow:var(--glow-accent)}

.main-grid{display:grid;grid-template-columns:1fr 340px;gap:var(--s-xl);padding:var(--s-lg) 0 var(--s-xl);align-items:start}

/* ---------- Карточки статей ---------- */
#articles-list{display:grid;gap:var(--s-lg)}
.card{position:relative;background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-lg);
  overflow:hidden;display:grid;grid-template-columns:300px 1fr;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:transform .25s,border-color .25s,box-shadow .25s}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .25s;pointer-events:none}
.card:hover{transform:translateY(-4px);box-shadow:var(--glow)}
.card:hover::before{opacity:1}
.card .thumb{display:block;line-height:0;background:var(--bg-2);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.06)}
.card .body{padding:26px 28px;display:flex;flex-direction:column}
.card .meta{display:flex;gap:12px;font-size:12px;margin-bottom:12px}
.card .meta .cat{color:var(--cyan);font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);padding:4px 12px;border-radius:var(--r-full)}
.card h3{font-size:22px;margin-bottom:10px;color:#fff}
.card h3 a{transition:color .2s}
.card h3 a:hover{color:var(--cyan)}
.card p{font-size:15px;color:var(--muted);margin-bottom:18px}
.card .readmore{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:14px;color:#fff;padding:11px 22px;border-radius:var(--r-full);
  background:var(--glass-2);border:1px solid var(--stroke-2);transition:all .2s}
.card .readmore::after{content:"→";transition:transform .2s}
.card .readmore:hover{background:var(--grad);color:#0a0a12;border-color:transparent}
.card .readmore:hover::after{transform:translateX(4px)}
.empty-msg{color:var(--muted);padding:40px 0;text-align:center;font-size:16px}

/* ---------- Пагинация ---------- */
.pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:var(--s-lg)}
.page-btn{min-width:46px;height:46px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--stroke);background:var(--glass);color:var(--txt);border-radius:var(--r-md);
  font-family:var(--sans);font-weight:600;font-size:15px;cursor:pointer;transition:all .18s}
.page-btn:hover:not(:disabled):not(.active){border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.page-btn.active{background:var(--grad);color:#0a0a12;border-color:transparent;box-shadow:var(--glow-accent)}
.page-btn:disabled{opacity:.35;cursor:not-allowed}
.page-dots{min-width:20px;display:inline-flex;align-items:center;justify-content:center;color:var(--faint)}

/* ---------- Сайдбар / боксы ---------- */
aside{align-self:start;position:sticky;top:20px;display:grid;gap:var(--s-lg)}
aside .box{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-lg);padding:26px 24px;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
aside h4{font-size:18px;margin-bottom:18px;color:#fff}
.poplist{list-style:none}
.poplist li{padding:14px 0;border-bottom:1px solid var(--stroke);counter-increment:pop}
.poplist li:last-child{border-bottom:none}
.poplist li::before{content:counter(pop);font-family:var(--display);font-size:13px;font-weight:700;
  color:var(--cyan);margin-right:10px}
.poplist{counter-reset:pop}
.poplist a{font-size:15px;color:var(--txt);transition:color .2s}
.poplist a:hover{color:var(--cyan)}

/* ---------- Страница статьи ---------- */
.site-head{position:relative;z-index:10}
.article-grid{display:grid;grid-template-columns:1fr 340px;gap:var(--s-xl);padding:var(--s-lg) 0 var(--s-xl);align-items:start}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-bottom:var(--s-md);font-weight:600;font-size:14px;
  color:var(--txt);background:var(--glass-2);border:1px solid var(--stroke-2);padding:10px 20px;border-radius:var(--r-full);transition:all .2s}
.back-link .arrow{transition:transform .2s}
.back-link:hover{background:var(--grad);color:#0a0a12;border-color:transparent}
.back-link:hover .arrow{transform:translateX(-4px)}
.art-cat{display:inline-block;color:var(--cyan);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.art-title{font-size:clamp(28px,4vw,42px);margin-bottom:16px;color:#fff}
.art-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin-bottom:var(--s-lg)}
.art-cover{width:100%;border-radius:var(--r-lg);overflow:hidden;margin-bottom:var(--s-lg);
  border:1px solid var(--stroke);background:var(--grad-soft);min-height:240px}
.art-cover img{width:100%;max-height:460px;object-fit:cover}
.art-body{font-size:17px;line-height:1.85;color:#cfd6ec}
.art-body h2{font-size:26px;margin:var(--s-lg) 0 12px;color:#fff}
.art-body h3{font-size:21px;margin:var(--s-md) 0 10px;color:#fff}
.art-body p{margin-bottom:18px}
.art-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.art-body ul,.art-body ol{margin:0 0 18px 22px}
.art-body li{margin-bottom:8px}
.art-body blockquote{border-left:3px solid var(--violet);background:var(--glass);padding:16px 20px;margin:20px 0;
  font-style:italic;border-radius:0 var(--r-md) var(--r-md) 0;color:#fff}
.art-body img{border-radius:var(--r-lg);margin:20px 0;border:1px solid var(--stroke)}
.not-found{text-align:center;padding:100px 0}
.not-found h1{font-size:32px;margin-bottom:14px;color:#fff}
.not-found p{color:var(--muted)}

/* ---------- Внутренние страницы: шапки ---------- */
.topbar,.top,.site-head{position:relative;z-index:10}
.page-head{padding:60px 0 40px;text-align:center}
.page-head h1{font-size:clamp(30px,4vw,46px);color:#fff;margin-bottom:12px}
.page-head h1{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-head p{color:var(--muted);font-size:18px;max-width:640px;margin:0 auto}
.page-body{padding:var(--s-lg) 0 var(--s-xl)}
.page-body h2{font-size:24px;margin:36px 0 14px;color:#fff}
.page-body p{font-size:16px;color:var(--muted);margin-bottom:14px;line-height:1.8}
.page-body ul{margin:0 0 16px 22px}
.page-body li{margin-bottom:8px;color:var(--muted);line-height:1.8}
.page-body a{color:var(--cyan)}

/* ---------- Об авторе ---------- */
.author-grid{display:grid;grid-template-columns:300px 1fr;gap:var(--s-xl);align-items:start;
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-xl);padding:var(--s-lg)}
.author-photo{width:100%;aspect-ratio:1;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--stroke-2);background:var(--grad-soft)}
.author-photo img{width:100%;height:100%;object-fit:cover}
.author-text h2{font-size:28px;margin-bottom:16px;color:#fff}
.author-text p{font-size:16px;color:var(--muted);margin-bottom:16px;line-height:1.8}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:40px 0}
.fact{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-lg);padding:26px;text-align:center}
.fact strong{display:block;font-family:var(--display);font-size:34px;
  background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.fact span{font-size:13px;color:var(--muted)}

/* ---------- Контакты ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-xl);align-items:start}
.contact-list{list-style:none}
.contact-list li{display:flex;gap:16px;align-items:flex-start;padding:20px;margin-bottom:14px;
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-md)}
.contact-list .ic{font-size:24px}
.contact-list strong{display:block;font-family:var(--display);font-size:16px;margin-bottom:2px;color:#fff}
.contact-list a,.contact-list span{color:var(--muted)}
.contact-list a:hover{color:var(--cyan)}
.cform{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-xl);padding:34px;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.cform h2{font-size:24px;margin-bottom:22px;color:#fff}
.cform label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.cform input,.cform textarea{width:100%;padding:13px 16px;background:var(--bg-2);border:1px solid var(--stroke-2);
  border-radius:var(--r-md);font-size:15px;color:var(--txt);margin-bottom:16px;outline:none;font-family:var(--sans);transition:border-color .2s}
.cform input:focus,.cform textarea:focus{border-color:var(--cyan)}
.cform textarea{min-height:130px;resize:vertical}
.cform input.invalid,.cform textarea.invalid{border-color:var(--error)}
.cform .field-error{display:block;margin:-10px 0 14px;color:var(--error);font-size:13px;min-height:1px}
.form-notice{display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-md);
  background:rgba(163,230,53,.1);border:1px solid rgba(163,230,53,.3);color:var(--lime);font-size:15px}
.form-notice.show{display:block}

/* ---------- Курсы ---------- */
.top-hero{position:relative;z-index:5;text-align:center;padding:70px 0 40px;max-width:760px;margin:0 auto}
.top-hero h1{font-size:clamp(32px,5vw,52px);margin-bottom:18px;
  background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.top-hero p{font-size:18px;color:var(--muted)}
.courses{padding:var(--s-lg) 0 var(--s-xl)}
.courses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s-lg)}
.course{position:relative;background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.course:hover{transform:translateY(-6px);box-shadow:var(--glow)}
.course .thumb{min-height:190px;background:var(--grad-soft);overflow:hidden}
.course .thumb img{width:100%;height:100%;min-height:190px;object-fit:cover}
.course .body{padding:26px 24px;display:flex;flex-direction:column;flex:1}
.course .tag{align-self:flex-start;font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);
  padding:5px 12px;border-radius:var(--r-full);margin-bottom:14px}
.course h3{font-size:22px;margin-bottom:10px;color:#fff}
.course p{font-size:15px;color:var(--muted);margin-bottom:18px}
.course ul{list-style:none;margin-bottom:22px}
.course ul li{font-size:14px;color:var(--txt);padding:7px 0 7px 26px;position:relative}
.course ul li::before{content:"✦";position:absolute;left:0;color:var(--violet)}
.course .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.course .price{font-family:var(--display);font-size:24px;font-weight:700;color:#fff}
.course .price small{display:block;font-family:var(--sans);font-size:12px;color:var(--faint);font-weight:400}
.course .btn-primary{padding:12px 22px;min-height:46px;font-size:15px}
.cta-band{position:relative;overflow:hidden;background:var(--grad-soft);border:1px solid var(--stroke-2);
  border-radius:var(--r-xl);text-align:center;padding:var(--s-xl) 24px;margin-top:var(--s-xl)}
.cta-band h2{font-size:32px;margin-bottom:16px;color:#fff}
.cta-band p{font-size:17px;color:var(--muted);max-width:560px;margin:0 auto var(--s-lg)}

/* ---------- Модалка курсов ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(3,5,14,.7);display:none;align-items:center;justify-content:center;
  z-index:1000;padding:20px;opacity:0;transition:opacity .25s;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.modal-overlay.open{display:flex;opacity:1}
.modal{background:var(--bg-2);border:1px solid var(--stroke-2);border-radius:var(--r-lg);max-width:440px;width:100%;
  padding:36px 32px;position:relative;box-shadow:var(--glow);transform:translateY(16px);transition:transform .25s}
.modal-overlay.open .modal{transform:translateY(0)}
.modal h3{font-size:24px;margin-bottom:6px;color:#fff}
.modal .modal-sub{font-size:14px;color:var(--muted);margin-bottom:22px}
.modal .field{margin-bottom:14px}
.modal label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--muted)}
.modal input{width:100%;padding:12px 14px;font-size:15px;background:var(--bg);color:var(--txt);
  border:1px solid var(--stroke-2);border-radius:var(--r-md);outline:none;transition:border-color .18s}
.modal input:focus{border-color:var(--cyan)}
.modal .btn-primary{width:100%;margin-top:8px}
.modal-close{position:absolute;top:12px;right:14px;background:none;border:none;font-size:26px;color:var(--faint);cursor:pointer;padding:4px}
.modal-close:hover{color:#fff}
.modal-success{text-align:center;padding:20px 0}
.modal-success .ok-icon{width:66px;height:66px;border-radius:50%;background:rgba(163,230,53,.12);color:var(--lime);
  font-size:34px;display:grid;place-items:center;margin:0 auto 18px}
.modal-success h3{margin-bottom:10px}
.modal-success p{font-size:15px;color:var(--muted);margin-bottom:22px}

/* ---------- Футер ---------- */
footer{position:relative;z-index:2;margin-top:var(--s-xl);padding:var(--s-xl) 0 var(--s-lg);
  border-top:1px solid var(--stroke);background:linear-gradient(to bottom,transparent,rgba(10,15,34,.6))}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--s-lg)}
footer .brand{margin-bottom:var(--s-md)}
footer p{font-size:14px;color:var(--muted);max-width:340px;line-height:1.7}
footer h5{font-family:var(--display);font-size:16px;margin-bottom:var(--s-md);color:#fff}
footer ul{list-style:none}
footer ul li{margin-bottom:12px}
footer a{font-size:14px;color:var(--muted);transition:color .2s}
footer a:hover{color:var(--cyan)}
.copy{border-top:1px solid var(--stroke);margin-top:var(--s-lg);padding-top:var(--s-md);font-size:13px;color:var(--faint);text-align:center}

/* ---------- Адаптив ---------- */
@media(max-width:960px){
  .burger{display:block;position:relative;z-index:60}
  .navlinks{display:none}
  .navlinks.open{display:flex;flex-direction:column;position:absolute;top:74px;right:0;left:0;
    background:var(--bg-2);border:1px solid var(--stroke-2);padding:16px;border-radius:var(--r-lg);
    gap:4px;z-index:1000;box-shadow:var(--glow)}
  .navlinks.open a{display:block;width:100%;padding:12px 8px;font-size:16px;color:var(--txt);
    border-bottom:1px solid var(--stroke)}
  .navlinks.open a:last-child{border-bottom:none}
  .navlinks.open a::after{display:none}
  .hero-grid{grid-template-columns:1fr;text-align:center;gap:var(--s-lg)}
  .hero p.lead,.hero-actions,.hero-stats{margin-left:auto;margin-right:auto;justify-content:center}
  .main-grid,.article-grid{grid-template-columns:1fr}
  .courses-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  aside{position:static}
}
@media(max-width:720px){
  .card{grid-template-columns:1fr}
  .card .thumb img{max-height:220px}
  .author-grid{grid-template-columns:1fr;text-align:center}
  .author-photo{max-width:240px;margin:0 auto}
  .facts{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .btn-primary,.btn-secondary{width:100%}
  .hero-portrait .frame{width:280px;height:360px}
  .hero-stats{gap:24px}
}
/* ---------- Кнопки приглашения в карточках курса ---------- */
.course-actions{display:flex;flex-wrap:wrap;gap:10px;width:100%;margin-top:4px}
.btn-invite{flex:1 1 160px;min-height:48px;padding:12px 18px;border-radius:var(--r-full);
  font-size:14.5px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow .25s,filter .25s}
.btn-invite svg{width:18px;height:18px;flex-shrink:0}

/* Email — фирменный градиент */
.btn-email{background:var(--grad);color:#0a0a12;box-shadow:var(--glow-accent)}
.btn-email:hover{transform:translateY(-3px);box-shadow:0 16px 48px rgba(34,211,238,.45);filter:brightness(1.08)}
.btn-email:active{transform:translateY(0)}

/* Telegram — фирменный синий */
.btn-tg{background:linear-gradient(135deg,#2AABEE 0%,#229ED9 100%);color:#fff;
  box-shadow:0 10px 30px rgba(42,171,238,.4)}
.btn-tg:hover{transform:translateY(-3px);box-shadow:0 16px 44px rgba(42,171,238,.55);filter:brightness(1.08)}
.btn-tg:active{transform:translateY(0)}

@media(max-width:520px){
  .btn-invite{flex:1 1 100%}
}