/* Studik blog — shared styles (theme-aware, no build step) */
:root{--ground:#FBF8F2;--surface:#fff;--surface-2:#F6F1E7;--ink:#17203A;--muted:#5B6178;--hair:#E8E1D2;
  --blue:#1C3D95;--blue-ink:#152C6B;--blue-tint:#EDF1FB;--blue-soft:#DCE4F7;--gold:#F5B21D;--gold-deep:#966000;--green:#1F9D63;--green-tint:#E6F5EC;--red:#c2410c;
  --shadow:0 1px 2px rgba(21,44,107,.06),0 12px 30px -12px rgba(21,44,107,.16);--r:16px;
  --sans:"Segoe UI",system-ui,-apple-system,Arial,sans-serif}
@media(prefers-color-scheme:dark){:root{--ground:#0D1528;--surface:#15203D;--surface-2:#111A33;--ink:#ECE8DE;--muted:#9AA3BE;--hair:#26314F;
  --blue:#7091EC;--blue-ink:#AFC1F4;--blue-tint:#172344;--blue-soft:#1E2C50;--gold:#F5B21D;--gold-deep:#F5B21D;--green:#37B87C;--green-tint:#12281F;--red:#fb7a4b;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 30px -12px rgba(0,0,0,.5)}}
:root[data-theme="light"]{--ground:#FBF8F2;--surface:#fff;--surface-2:#F6F1E7;--ink:#17203A;--muted:#5B6178;--hair:#E8E1D2;--blue:#1C3D95;--blue-ink:#152C6B;--blue-tint:#EDF1FB;--blue-soft:#DCE4F7;--gold-deep:#966000;--green:#1F9D63;--green-tint:#E6F5EC;--red:#c2410c;--shadow:0 1px 2px rgba(21,44,107,.06),0 12px 30px -12px rgba(21,44,107,.16)}
:root[data-theme="dark"]{--ground:#0D1528;--surface:#15203D;--surface-2:#111A33;--ink:#ECE8DE;--muted:#9AA3BE;--hair:#26314F;--blue:#7091EC;--blue-ink:#AFC1F4;--blue-tint:#172344;--blue-soft:#1E2C50;--gold-deep:#F5B21D;--green:#37B87C;--green-tint:#12281F;--red:#fb7a4b;--shadow:0 1px 2px rgba(0,0,0,.4),0 12px 30px -12px rgba(0,0,0,.5)}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
/* clip, а не hidden: обрізає без створення скрол-контейнера, тож sticky-хедер
   і sticky-панель фільтрів (.uni-filters) працюють коректно на мобільних */
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.wrap.wide{max-width:1080px}

/* header */
header{border-bottom:1px solid var(--hair);position:sticky;top:0;background:color-mix(in srgb,var(--ground) 90%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:20}
.nav{display:flex;align-items:center;gap:16px;height:62px;max-width:1080px;margin:0 auto;padding:0 20px}
.brand{display:inline-flex;align-items:center;font-weight:800;color:var(--blue-ink);text-decoration:none;font-size:1.2rem;letter-spacing:-.02em}
.brand img{height:28px;width:auto;display:block;margin-right:8px}
.brand span{color:var(--gold-deep)}
/* повне головне меню на кожній сторінці — той самий механізм, що на головній:
   горизонтальний список на широких екранах, drawer/гамбургер на вузьких
   (а не overflow-скрол — той ламався: flex-елемент без min-width:0 не стискався
   і вилазив за межі хедера замість скролу). */
.nav-links{display:flex;flex-wrap:nowrap;align-items:center;gap:16px;margin-left:auto;font-size:.92rem;font-weight:600}
.nav-links a{color:var(--muted);text-decoration:none;white-space:nowrap}
.nav-links a:hover{color:var(--blue)}
.theme-btn{-webkit-appearance:none;appearance:none;margin:0;padding:0;background:none;border:1px solid var(--hair);border-radius:10px;width:38px;height:38px;align-items:center;justify-content:center;color:var(--ink);cursor:pointer;line-height:0;display:inline-flex}
.theme-btn .sun{display:none}.theme-btn .moon{display:block}
@media(prefers-color-scheme:dark){.theme-btn .sun{display:block}.theme-btn .moon{display:none}}
:root[data-theme="dark"] .theme-btn .sun{display:block}:root[data-theme="dark"] .theme-btn .moon{display:none}
:root[data-theme="light"] .theme-btn .sun{display:none}:root[data-theme="light"] .theme-btn .moon{display:block}

/* mobile drawer menu (той самий CSS-механізм, що на index.html) */
.menu-btn{-webkit-appearance:none;appearance:none;margin:0;padding:0;display:none;background:none;border:1px solid var(--hair);border-radius:10px;width:38px;height:38px;align-items:center;justify-content:center;font-size:1.05rem;line-height:1;color:var(--ink);cursor:pointer}
.drawer-ov{position:fixed;inset:0;background:rgba(10,16,32,.5);z-index:60;opacity:0;visibility:hidden;transition:opacity .2s}
.drawer-ov.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(84vw,320px);background:var(--surface);z-index:61;transform:translateX(100%);transition:transform .25s ease;box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column;gap:6px}
.drawer.open{transform:none}
.drawer a{padding:14px 8px;text-decoration:none;color:var(--ink);font-weight:600;border-bottom:1px solid var(--hair)}
.drawer .close{align-self:flex-end;background:none;border:1px solid var(--hair);border-radius:10px;width:40px;height:40px;font-size:1.3rem;cursor:pointer;color:var(--ink)}
@media(max-width:880px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex;align-items:center}
  .theme-btn{margin-left:auto}
}

/* active-page marker + nav CTA (той самий механізм, що на index.html) */
.nav-links a.nav-page{color:var(--blue);font-weight:700;display:inline-flex;align-items:center;gap:7px}
.nav-links a.nav-page::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 auto}
.nav-links a.nav-page:hover{color:var(--blue-ink)}
.drawer a.drawer-page{color:var(--blue);font-weight:700}
.nav-cta,.drawer-cta{display:inline-flex;align-items:center;justify-content:center;font-family:inherit;font-size:.92rem;font-weight:700;padding:10px 18px;border-radius:999px;border:none;cursor:pointer;background:var(--gold);color:#221a05;white-space:nowrap;text-decoration:none;box-shadow:0 8px 22px -8px rgba(245,178,29,.7)}
.nav-cta:hover,.drawer-cta:hover{transform:translateY(-1px);text-decoration:none}
.drawer-cta{margin-top:10px;padding:14px 18px}
@media(max-width:880px){.nav-cta{display:none}}

/* breadcrumb */
.crumb{font-size:.85rem;color:var(--muted);margin:22px 0 6px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--blue)}

/* article */
article{padding-bottom:20px}
.eyebrow{display:inline-block;color:var(--gold-deep);font-weight:800;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;margin:10px 0 8px}
h1{font-size:clamp(1.7rem,5vw,2.5rem);line-height:1.15;color:var(--blue-ink);letter-spacing:-.02em;margin:.1em 0 .3em}
.meta{color:var(--muted);font-size:.9rem;margin:0 0 26px;display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center}
.meta .dot{opacity:.5}
article .lede{font-size:1.15rem;color:var(--ink);line-height:1.6;margin:0 0 28px}
article h2{font-size:clamp(1.35rem,3.5vw,1.7rem);color:var(--blue-ink);margin:1.9em 0 .5em;line-height:1.25}
article h3{font-size:1.15rem;color:var(--ink);margin:1.5em 0 .3em}
article p{margin:0 0 1.1em}
article ul,article ol{margin:0 0 1.2em;padding-left:1.3em}
article li{margin:.4em 0}
article strong{color:var(--blue-ink)}
:root[data-theme="dark"] article strong{color:var(--blue-ink)}
article a{font-weight:600;text-decoration:underline;text-decoration-color:var(--blue-soft);text-underline-offset:2px}

/* tables */
.tbl{overflow-x:auto;margin:0 0 1.4em;border:1px solid var(--hair);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:420px}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--hair);vertical-align:top}
thead th{background:var(--blue-tint);color:var(--blue-ink);font-weight:700;font-size:.85rem}
tbody tr:last-child td{border-bottom:none}
tbody tr:nth-child(even){background:var(--surface-2)}

/* callout / note */
.note{background:var(--blue-tint);border:1px solid var(--blue-soft);border-radius:12px;padding:16px 18px;margin:0 0 1.4em;font-size:.97rem}
.note.warn{background:var(--green-tint);border-color:transparent}
.note b{color:var(--blue-ink)}
.note p:last-child{margin-bottom:0}

blockquote{margin:0 0 1.4em;padding:12px 18px;border-left:3px solid var(--gold);background:var(--surface-2);border-radius:0 12px 12px 0;color:var(--ink);font-style:italic}
blockquote p:last-child{margin-bottom:0}

/* key facts strip */
.keyfacts{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:0 0 1.6em}
.keyfacts .kf{background:var(--surface);border:1px solid var(--hair);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow)}
.keyfacts .kf b{display:block;font-size:1.4rem;color:var(--blue-ink);line-height:1.1}
.keyfacts .kf span{font-size:.82rem;color:var(--muted)}

/* FAQ */
.faq{margin:1.2em 0 0}
.faq details{border:1px solid var(--hair);border-radius:12px;padding:0 18px;margin:0 0 10px;background:var(--surface)}
.faq summary{cursor:pointer;font-weight:700;color:var(--blue-ink);padding:15px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold-deep);font-weight:800;font-size:1.3rem}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--hair)}
.faq details > p{margin:14px 0}

/* CTA */
.cta{background:linear-gradient(140deg,#1c3d95,#2d51b8);border-radius:18px;padding:26px 24px;color:#fff;margin:2.4em 0 1em;text-align:center}
.cta h2{color:#fff;margin:0 0 8px;font-size:1.4rem}
.cta p{color:rgba(255,255,255,.9);margin:0 0 18px;font-size:1rem}
.cta .btn{display:inline-block;background:var(--gold);color:#221a05;font-weight:800;padding:13px 26px;border-radius:999px;text-decoration:none;box-shadow:0 8px 22px -8px rgba(245,178,29,.7)}
.cta .btn:hover{text-decoration:none;transform:translateY(-1px)}
.cta .done{display:none;font-weight:700}
.cta form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;max-width:440px;margin:0 auto}
.cta input[name="phone"]{flex:1 1 220px;min-width:0;padding:13px 16px;border-radius:12px;border:1.5px solid rgba(255,255,255,.3);background:rgba(255,255,255,.12);color:#fff;font-size:1rem}
.cta input[name="phone"]::placeholder{color:rgba(255,255,255,.7)}
.cta .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* related */
.related{border-top:1px solid var(--hair);margin-top:2.4em;padding-top:22px}
.related h3{margin:0 0 14px;font-size:1rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.rel-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:640px){.rel-cards{grid-template-columns:1fr}}
.rel-card{display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:14px 16px;text-decoration:none;transition:transform .15s,border-color .15s,box-shadow .15s}
.rel-card:hover{transform:translateY(-2px);border-color:var(--blue);box-shadow:0 12px 26px -18px rgba(10,16,32,.5);text-decoration:none}
.rel-tag{align-self:flex-start;font-size:.68rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue-ink);background:var(--blue-tint);padding:3px 9px;border-radius:999px}
.rel-title{font-weight:700;color:var(--ink);font-size:.95rem;line-height:1.35}
.rel-all{display:inline-block;margin-top:14px;font-weight:700}

/* author / E-E-A-T box */
.author{display:flex;gap:16px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--hair);border-radius:var(--r);padding:18px 20px;margin:2.4em 0 0}
.author-ava{flex:0 0 auto;width:60px;height:60px;border-radius:14px;border:1px solid var(--hair);background:var(--surface);object-fit:cover}
.author-body{min-width:0}
.author-name{margin:0 0 4px;font-weight:800;color:var(--blue-ink)}
.author-desc{margin:0 0 8px;color:var(--ink);font-size:.95rem;line-height:1.55}
.author-meta{margin:0;color:var(--muted);font-size:.85rem}
.author-meta a{font-weight:700}
@media(max-width:560px){.author{gap:13px;padding:16px}.author-ava{width:48px;height:48px}}

/* table of contents */
.toc{background:var(--surface-2);border:1px solid var(--hair);border-radius:var(--r);padding:16px 20px 16px 18px;margin:0 0 1.8em}
.toc-t{margin:0 0 9px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.toc ol{margin:0;padding-left:1.25em;display:grid;gap:7px;counter-reset:toc}
.toc li{line-height:1.4}
.toc a{font-weight:600}
.toc a:hover{text-decoration:underline}

/* blog index */
.hero-blog{padding:34px 0 8px}
.hero-blog h1{margin-bottom:.2em}
.hero-blog p{color:var(--muted);font-size:1.1rem;margin:0}
/* search + filter controls */
.blog-controls{margin:24px 0 8px;display:flex;flex-direction:column;gap:14px}
.blog-search{position:relative}
.blog-search input{width:100%;padding:13px 16px 13px 46px;border-radius:12px;border:1.5px solid var(--hair);background:var(--surface);color:var(--ink);font-size:1rem;font-family:inherit}
.blog-search input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-tint)}
.blog-search .ico{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.blog-search .clr{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--muted);cursor:pointer;font-size:1.3rem;line-height:1;padding:4px 8px;display:none}
.chips-row{display:flex;flex-wrap:wrap;gap:8px}
.fchip{background:var(--surface);border:1.5px solid var(--hair);border-radius:999px;padding:7px 15px;font-size:.9rem;font-weight:600;color:var(--muted);cursor:pointer;font-family:inherit;transition:border-color .12s,background .12s}
.fchip:hover{border-color:var(--blue-soft)}
.fchip.on{background:var(--blue);border-color:var(--blue);color:#fff}
:root[data-theme="dark"] .fchip.on{color:#0D1528}
.blog-count{color:var(--muted);font-size:.88rem;margin:2px 0 0}
.blog-empty{display:none;text-align:center;color:var(--muted);padding:38px 0;font-size:1.02rem}
.pcard[hidden]{display:none}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin:18px 0 40px}
.pcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--hair);border-radius:16px;padding:22px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);transition:transform .15s ease,box-shadow .15s ease}
.pcard:hover{transform:translateY(-3px);text-decoration:none;box-shadow:0 20px 40px -24px rgba(21,44,107,.4)}
.pcard .tag{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-deep);margin-bottom:8px}
.pcard h2{font-size:1.15rem;color:var(--blue-ink);margin:0 0 8px;line-height:1.3}
.pcard p{color:var(--muted);font-size:.94rem;margin:0;flex:1}
.pcard .more{margin-top:14px;font-weight:700;color:var(--blue);font-size:.9rem}

/* footer */
footer{border-top:1px solid var(--hair);margin-top:30px;padding:22px 0;color:var(--muted);font-size:.9rem}
footer a{color:var(--blue);font-weight:600}
footer .wrap{max-width:1080px}

/* ── mobile ── */
@media(max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .nav{gap:10px;height:56px;padding:0 16px}
  .brand{font-size:1.1rem}
  .brand img{height:24px;margin-right:6px}
  .crumb{margin:16px 0 4px}
  h1{margin:.1em 0 .35em}
  .meta{gap:5px 12px;font-size:.86rem}
  article .lede{font-size:1.06rem}
  article h2{margin:1.5em 0 .45em}
  article ul,article ol{padding-left:1.15em}
  /* callouts/quotes: a touch less side padding on small screens */
  .note{padding:14px 15px}
  blockquote{padding:10px 15px}
  /* CTA: full-width button + tighter box for thumbs */
  .cta{padding:22px 18px}
  .cta h2{font-size:1.25rem}
  .cta form{gap:8px}
  .cta .btn{width:100%}
  /* filter chips: bigger tap targets */
  .fchip{padding:9px 15px}
  /* blog index cards → single column, no clipping on narrow phones */
  .hero-blog{padding:26px 0 4px}
  .hero-blog p{font-size:1.02rem}
  .cards{grid-template-columns:1fr;gap:16px;margin:16px 0 32px}
  .pcard{padding:18px}
  .toc{padding:15px 16px}
}
@media(max-width:360px){
  h1{font-size:1.55rem}
  .brand span{font-size:1rem}
}