/* ============================================================
   Crack Injection — design system
   ============================================================ */
:root{
  --ink:#0f1b2d;        /* deep slate */
  --ink-2:#33445c;
  --muted:#5d6b7e;
  --line:#e4e8ee;
  --bg:#ffffff;
  --bg-2:#f5f7fa;
  --bg-3:#eef2f7;
  --brand:#1f6feb;      /* injection blue */
  --brand-d:#1559c4;
  --accent:#f0a020;     /* epoxy amber */
  --ok:#0f9d58;
  --err:#d23f3f;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 24px 60px -12px rgba(16,24,40,.22);
  --wrap:1140px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --display:'Fraunces',Georgia,serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.65;-webkit-font-smoothing:antialiased;font-size:17px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.narrow{max-width:760px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);line-height:1.15;font-weight:600;letter-spacing:-.01em}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{font-family:var(--display);font-weight:700;font-size:1.28rem;color:var(--ink);
  display:flex;align-items:center;gap:.5rem;letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{color:var(--brand);font-size:1.1em;transform:translateY(-1px)}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{color:var(--ink-2);font-weight:500;font-size:.95rem;padding:8px 12px;border-radius:8px;transition:.15s}
.nav-links a:hover{background:var(--bg-3);color:var(--ink);text-decoration:none}
.menu-toggle{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1200px 500px at 80% -10%,rgba(31,111,235,.12),transparent),
  linear-gradient(180deg,var(--bg-2),var(--bg));border-bottom:1px solid var(--line)}
.hero-inner{display:grid;grid-template-columns:1.4fr .9fr;gap:48px;align-items:center;padding:78px 22px 64px}
.eyebrow{display:inline-block;font-weight:600;font-size:.8rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--brand-d);background:rgba(31,111,235,.1);padding:5px 12px;border-radius:30px;margin-bottom:18px}
.hero-copy h1{font-size:clamp(2.2rem,4.6vw,3.5rem);margin:.1em 0 .35em;font-weight:700}
.hero-copy p{font-size:1.16rem;color:var(--muted);max-width:34ch;margin:0 0 28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:grid;gap:16px}
.hero-stats div{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.hero-stats strong{font-family:var(--display);font-size:2.1rem;color:var(--brand);line-height:1}
.hero-stats span{color:var(--muted);font-size:.92rem;margin-top:4px}

/* ---------- buttons ---------- */
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:600;font-size:.98rem;
  padding:13px 24px;border-radius:30px;border:1px solid var(--brand);transition:.18s;cursor:pointer}
.btn:hover{background:var(--brand-d);border-color:var(--brand-d);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--bg-3);color:var(--ink)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature-grid{grid-template-columns:2fr 1fr 1fr}
.card{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s;color:inherit}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);text-decoration:none}
.card-img{aspect-ratio:16/10;background-size:cover;background-position:center;background-color:var(--bg-3)}
.card-img.plain,.card-img:empty{background:linear-gradient(135deg,#1f6feb22,#0f1b2d22)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:8px}
.card-cat{font-size:.74rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--brand)}
.card h3{font-size:1.12rem;margin:0;line-height:1.25}
.card p{margin:0;color:var(--muted);font-size:.94rem}
.card.big{grid-row:span 1}
.card.big .card-img{aspect-ratio:16/11}
.card.big h3{font-size:1.5rem}
.feature-grid .card:first-child{grid-row:span 2}

.home-feature{margin-top:-40px;position:relative;z-index:2;padding-top:0}
@media(min-width:880px){.home-feature{margin-top:46px}}

/* ---------- home category blocks ---------- */
.home-cat{margin:64px 0}
.home-cat-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:26px;gap:20px}
.home-cat-head h2{font-size:1.7rem;margin:0 0 4px}
.home-cat-head p{margin:0;color:var(--muted)}
.link-more{font-weight:600;white-space:nowrap}

/* ---------- page head ---------- */
.page-head{background:linear-gradient(180deg,var(--bg-2),var(--bg));border-bottom:1px solid var(--line);
  padding:54px 0 46px}
.page-head h1{font-size:clamp(2rem,4vw,2.8rem);margin:.1em 0}
.page-head p{color:var(--muted);font-size:1.1rem;margin:.4em 0 0;max-width:60ch}
.page-head.center{text-align:center}
.page-head.center p{margin-left:auto;margin-right:auto}
.crumb{font-size:.82rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--brand)}

/* ---------- article ---------- */
.article-hero{padding:96px 0 40px;background-size:cover;background-position:center;color:#fff}
.article-hero.plain{background:linear-gradient(135deg,var(--ink),#21364f)}
.article-hero .crumb{color:#bcd4ff}
.article-hero h1{color:#fff;font-size:clamp(2rem,4.4vw,3rem);margin:.25em 0;max-width:18ch}
.article-hero .lede{color:rgba(255,255,255,.9);font-size:1.16rem;max-width:60ch;margin:0}
.article-body{display:grid;grid-template-columns:1fr 320px;gap:54px;padding-top:48px;padding-bottom:24px}
.prose{font-size:1.08rem;color:var(--ink-2);max-width:72ch}
.prose p{margin:0 0 1.25em}
.prose h2{font-size:1.6rem;margin:1.8em 0 .5em;color:var(--ink)}
.prose h3{font-size:1.28rem;margin:1.6em 0 .4em;color:var(--ink)}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.3em}
.prose li{margin:.4em 0}
.prose a{color:var(--brand);font-weight:500;text-decoration:underline;text-decoration-color:rgba(31,111,235,.35);text-underline-offset:2px}
.prose blockquote{margin:1.4em 0;padding:.6em 1.2em;border-left:4px solid var(--brand);
  background:var(--bg-2);border-radius:0 8px 8px 0;color:var(--ink-2);font-style:italic}
.article-cta{margin:2.5em 0 1em;padding:30px 32px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);text-align:center}
.article-cta h3{margin:0 0 .3em;font-size:1.3rem}
.article-cta p{margin:0 0 1.1em;color:var(--muted)}
.article-aside{position:relative}
.aside-card{position:sticky;top:90px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.aside-card h4{margin:0 0 .3em;font-size:1.15rem}
.aside-card p{margin:0 0 1em;color:var(--muted);font-size:.95rem}
.related{padding:40px 22px 70px;border-top:1px solid var(--line);margin-top:30px}
.related h2{font-size:1.5rem;margin:0 0 24px}

/* ---------- forms ---------- */
.news-form{display:flex;gap:8px;flex-wrap:wrap}
.news-form input[type=email]{flex:1;min-width:0;padding:11px 14px;border:1px solid var(--line);
  border-radius:30px;font:inherit;font-size:.95rem;background:var(--bg)}
.news-form button{padding:11px 20px;border-radius:30px;border:0;background:var(--brand);color:#fff;
  font-weight:600;cursor:pointer;font-size:.95rem}
.news-form button:hover{background:var(--brand-d)}
.contact-grid{display:grid;grid-template-columns:1.3fr .8fr;gap:46px;padding:48px 0 70px;align-items:start}
.contact-form{display:flex;flex-direction:column;gap:16px}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.92rem;color:var(--ink-2)}
.contact-form input,.contact-form textarea{padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font:inherit;font-size:1rem;background:var(--bg)}
.contact-form input:focus,.contact-form textarea:focus,.news-form input:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.contact-form button{align-self:flex-start;background:var(--brand);color:#fff;border:0;padding:13px 30px;
  border-radius:30px;font-weight:600;font-size:1rem;cursor:pointer}
.contact-form button:hover{background:var(--brand-d)}
.contact-side h3{font-size:1.1rem;margin:0 0 .2em}
.contact-side p{margin:0 0 1.4em;color:var(--muted)}
.form-msg{margin:.4em 0 0;font-size:.92rem;font-weight:500;min-height:1.2em;width:100%}
.form-msg.ok{color:var(--ok)}
.form-msg.err{color:var(--err)}

/* ---------- cta band ---------- */
.cta-band{margin:70px 0 0;background:linear-gradient(135deg,var(--ink),#22384f);color:#fff;padding:64px 0}
.cta-band h2{color:#fff;font-size:1.9rem;margin:0 0 .2em}
.cta-band p{color:rgba(255,255,255,.78);margin:0 0 24px}
.cta-band .news-form{max-width:480px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#aeb9c7;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding:60px 22px 36px}
.footer-grid h4{color:#fff;font-size:1rem;margin:0 0 .9em}
.footer-grid a{display:block;color:#aeb9c7;padding:4px 0;font-size:.94rem}
.footer-grid a:hover{color:#fff}
.footer-brand .brand{color:#fff;margin-bottom:.6em}
.footer-brand p{font-size:.92rem;line-height:1.6;max-width:34ch}
.footer-news .news-form input{background:#1b2b3e;border-color:#2c3e54;color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  padding:22px;border-top:1px solid #233447;font-size:.88rem}
.footer-bottom a{color:#aeb9c7}

/* ---------- responsive ---------- */
@media(max-width:880px){
  .menu-toggle{display:flex}
  .nav-links{position:fixed;inset:66px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg);border-bottom:1px solid var(--line);padding:10px 16px 18px;
    transform:translateY(-120%);transition:.25s;box-shadow:var(--shadow-lg)}
  body.nav-open .nav-links{transform:translateY(0)}
  .nav-links a{padding:13px 8px;border-bottom:1px solid var(--line)}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:50px 22px 44px}
  .hero-stats{grid-template-columns:repeat(3,1fr)}
  .hero-stats strong{font-size:1.5rem}
  .card-grid,.feature-grid{grid-template-columns:1fr 1fr}
  .feature-grid .card:first-child{grid-row:auto}
  .article-body{grid-template-columns:1fr;gap:30px}
  .article-aside{display:none}
  .contact-grid{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:560px){
  body{font-size:16px}
  .card-grid,.feature-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .home-cat-head{flex-direction:column;align-items:flex-start;gap:6px}
}